Communication method and device

文档序号：1893937 发布日期：2021-11-26 浏览：18次中文

阅读说明：本技术 一种通信方法及装置 (Communication method and device ) 是由刘俊于 2020-10-22 设计创作，主要内容包括：本申请提供一种通信方法及装置。该方法可以包括：第一通信设备确定用于侧链路传输的第一候选资源和第一业务；第一通信设备从第一候选资源中确定第一资源；第一资源与第一激活期在时域上存在交集,第一激活期是根据第一业务对应的DRX激活期确定的。在本申请中,第一通信设备选择与第一业务对应的DRX激活期存在交集的资源作为预留资源,并使用该预留资源进行侧链路传输,如此能够保证第一通信设备可以在激活期内接收到来自第二通信设备(如TX UE)的传输,节约RX UE的功耗,并保证第一通信设备与第二通信设备之间的侧链路传输。(The application provides a communication method and device. The method can comprise the following steps: the first communication equipment determines a first candidate resource and a first service for sidelink transmission; the first communication device determines a first resource from the first candidate resources; the first resource and a first active period intersect in a time domain, and the first active period is determined according to a DRX active period corresponding to the first service. In the application, the first communication device selects a resource having an intersection with a DRX active period corresponding to the first service as a reserved resource, and performs sidelink transmission using the reserved resource, so that the first communication device can receive a transmission from a second communication device (such as TX UE) in the active period, power consumption of RX UE is saved, and sidelink transmission between the first communication device and the second communication device is ensured.)

1. A method of communication, comprising:

if the first discontinuous reception DRX configuration information is not matched with the first resource configuration information, the first communication equipment sends the first information to the second communication equipment and/or sends the second information to the third communication equipment;

the first DRX configuration information is used for a first sidelink corresponding to the first communication device, the first resource configuration information is used for a second sidelink corresponding to the first communication device, the first information is used for indicating the second communication device to perform DRX configuration for the first sidelink, and the second information is used for indicating the third communication device to perform resource configuration for the second sidelink.

2. The method of claim 1, wherein the first DRX configuration information does not match the first resource configuration information, comprising: and the DRX activation period indicated by the first DRX configuration information and the time domain interval indicated by the first resource configuration information conflict in at least one time period.

3. The method according to claim 1 or 2, wherein the DRX active period indicated by the first DRX configuration information and the time domain interval indicated by the first resource configuration information conflict within a time period, comprising: the number of the time slots of the n DRX activation periods overlapped with the time domain interval is smaller than a preset threshold value, and n is a positive integer.

4. The method of claim 3, wherein the number of time slots of the n DRX activation periods overlapping with the time domain interval is less than a preset threshold, and the method comprises: and the number of the overlapped time slots divided by n times of the time slots of the DRX activation period is less than the preset threshold value.

5. The method according to any of claims 1 to 4, wherein the first resource configuration information is current resource configuration information of the first communication device; the method further comprises the following steps:

The first communication device receiving the first DRX configuration information from the second communication device;

the first communications device determines that the first DRX configuration information does not match the first resource configuration information.

6. The method according to claim 5, wherein the first communication device is a sending terminal device, the second communication device is a receiving terminal device, and the third communication device is a network device to which the sending terminal device belongs.

7. The method according to claim 5, wherein the first communication device is a receiving terminal device, the second communication device is a sending terminal device, and the third communication device is a network device to which the receiving terminal device belongs.

8. The method according to claim 5, wherein the first communication device is a receiving terminal device, the third communication device is a sending terminal device, and the second communication device is a network device to which the receiving terminal device belongs; the first resource configuration information comprises resource configuration information for indicating the first communication device to perceive.

9. The method of claim 5, wherein the first communication device is an assisting user equipment, wherein the second communication device is a network device to which the assisting user equipment belongs, wherein the third communication device is an assisted user equipment, and wherein the first resource configuration comprises resource configuration information for instructing the first communication device to sense.

10. The method according to claim 5, wherein the first communication device is a receiving terminal device, the second communication device is a sending terminal device, and the third communication device is a network device to which the receiving terminal device belongs; the first resource configuration information is used for the first communication device to send side link data on a second side link with a fourth communication device.

11. The method according to claim 5, wherein the first communication device is a receiving terminal device, the second communication device is a network device to which the receiving terminal device belongs, and the third communication device is a transmitting terminal device.

12. The method of claim 5, wherein the first communication device is an assisted user equipment, wherein the second communication device is a network device to which the assisted user equipment belongs, and wherein the third communication device is an assisting user equipment.

13. The method of any of claims 5 to 12, wherein the first communication device sends the second information to the third communication device, comprising:

the first communication device sends mode switching request information to the third communication device, wherein the mode switching request information is used for requesting the third communication device to switch the resource allocation mode of the first communication device from a first mode to a second mode; or the like, or, alternatively,

The first communication device sends resource configuration request information to the third communication device; wherein the resource configuration request information includes at least one of: the request reason for indicating that the DRX configuration information is not matched with the resource configuration information, the first DRX configuration information, the identification information corresponding to the first DRX configuration information, the expected resource configuration information or the resource adjustment amount.

14. The method according to any of claims 5 to 12, wherein the first communication device sending first information to the second communication device comprises:

the first communication equipment sends DRX configuration failure information to the second communication equipment;

wherein the DRX configuration failure information comprises at least one of the following: the third information is used for indicating DRX configuration failure, the identification information corresponding to the DRX configuration information, the configuration failure type is used for indicating that the DRX configuration information is not matched with the resource configuration information, the effective duration of the DRX configuration for the first communication equipment is not allowed to the second communication equipment, the first resource configuration information, the expected DRX configuration information, the DRX adjustment amount and the corresponding identification information.

15. The method of claim 14, wherein the first communications device sending DRX configuration failure information to the second communications device comprises:

The first communication equipment receives the DRX configuration failure information sent by the third communication equipment; the first communication equipment sends the DRX configuration failure information to the second communication equipment; or the like, or, alternatively,

the first communication device starts a timer after sending the resource configuration request information to the third communication device; and when the timer is overtime and the first communication equipment does not receive the resource configuration information sent by the third communication equipment, the first communication equipment sends the DRX configuration failure information to the second communication equipment.

16. The method according to claim 14 or 15, wherein the DRX configuration failure information is further used to trigger the second communication device to send fourth information to a network device to which the second communication device belongs, and the fourth information is used to indicate that the DRX configuration corresponding to the first sidelink fails.

17. The method according to any one of claims 14 to 16, wherein the identification information comprises at least one of: target identification, source identification, side link connection identification, source and target identification pair, side link connection identification, logical channel identification, resource pool identification, side link service identification, media access control layer protocol data unit MAC PDU identification, and transport block TB identification.

18. The method of any of claims 5 to 12, wherein the first communication device sending the first information to the second communication device and sending the second information to the third communication device comprises:

and the first communication equipment sends resource configuration request information to the third communication equipment and sends DRX configuration failure information to the second communication equipment.

19. The method according to any of claims 1 to 4, wherein the first DRX configuration information is the current DRX configuration information of the first communication device; the method further comprises the following steps:

the first communication device receiving the first resource configuration information from the third communication device;

the first communications device determines that the first DRX configuration information does not match the first resource configuration information.

20. The method according to claim 19, wherein the first communication device is a sending terminal device, the second communication device is a receiving terminal device, and the third communication device is a network device to which the sending terminal device belongs.

21. The method according to claim 19, wherein the first communication device is a receiving terminal device, the second communication device is a sending terminal device, and the third communication device is a network device to which the receiving terminal belongs.

22. The method according to claim 19, wherein the first communication device is a receiving terminal device, the second communication device is the network device of the receiving terminal device, and the third communication device is a sending terminal device; the first resource configuration information comprises resource configuration information for indicating the first communication device to perceive.

23. The method of claim 19, wherein the first communication device is an assisted user equipment, wherein the second communication device is a network device to which the assisted user equipment belongs, wherein the third communication device is an assisted user equipment, and wherein the first resource configuration information comprises resource configuration information for indicating that the first communication device is aware of.

24. The method according to claim 19, wherein the first communication device is a receiving terminal device, the second communication device is a sending terminal device, and the third communication device is a network device to which the receiving terminal device belongs; the first resource configuration information is used for the first communication device to send side link data on a second side link with a fourth communication device.

25. The method according to claim 19, wherein the first communication device is a receiving terminal device, the second communication device is a network device to which the receiving terminal device belongs, and the third communication device is a transmitting terminal device.

26. The method of claim 25, wherein the first communication device is an assisted user equipment, wherein the second communication device is a network device to which the assisted user equipment belongs, and wherein the third communication device is an assisting user equipment.

27. The method of any of claims 19 to 26, wherein the first communication device sends the second information to the third communication device, comprising:

the first communication device sends resource configuration failure information to the third communication device, wherein the resource configuration failure information includes at least one of the following: and the fifth information is used for indicating the resource configuration failure, and is used for indicating the configuration failure type of the resource configuration information which is not matched with the DRX configuration information, the first DRX configuration information, the identification information corresponding to the first DRX configuration information, the expected resource configuration information or the resource adjustment amount.

28. The method of claims 19 to 26, wherein the first communication device sends first information to the second communication device, comprising:

the first communication device sends DRX configuration request information to the third communication device; wherein the DRX configuration request information includes at least one of: the request reason for indicating that the DRX configuration information does not match the resource configuration information, the first resource configuration information, the desired DRX configuration or the DRX adjustment amount.

29. The method of any of claims 19 to 26, wherein the first communication device sending first information to a second communication device and sending second information to a third communication device, comprises:

and the first communication equipment sends resource configuration failure information to the second communication equipment and sends DRX configuration request information to the third communication equipment.

30. A method of communication, comprising:

the first communication equipment determines a first candidate resource and a first service for sidelink transmission;

the first communication device determines a first resource from the first candidate resource, wherein the first resource and a first active period have intersection in a time domain, and the first active period is determined according to a Discontinuous Reception (DRX) active period corresponding to the first service.

31. The method of claim 30, wherein the first communications device determines a first resource from the first candidate resources, comprising:

the first communication device determines a resource, which is intersected with the first activation period in a time domain, in the first candidate resource as a second candidate resource;

the first communications device determines the first resource from the second candidate resources.

32. The method of claim 31, wherein the first communication device determining a resource of the first candidate resources that intersects the first activation period in a time domain as a second candidate resource comprises:

the first communication device determines, as a second candidate resource, a resource included in the first activation period in a time domain among the first candidate resources.

33. The method of any one of claims 30 to 32, further comprising:

and the first communication equipment selects a second service, and the DRX active period corresponding to the second service and the first resource have intersection on a time domain.

34. The method of any one of claims 30 to 33, further comprising:

And if the first resource does not intersect with the DRX activation period corresponding to the third service of the first communication equipment, triggering resource reselection by the first communication equipment.

35. The method of any one of claims 30 to 34, further comprising:

and the first communication equipment determines a DRX period meeting a second condition in DRX configuration corresponding to a first service as a first period, wherein the first period is a period corresponding to the first resource.

36. The method according to any of claims 30 to 35, wherein before the first communication device determines the first candidate resource for sidelink transmission, the method further comprises:

the first communication device determining the first activation period;

the first communication equipment monitors side link control information (SCI) in the first activation period, wherein the SCI is used for indicating resources used by other communication equipment for side link transmission;

the first communication device performs measurements during the first active period according to the SCI.

37. The method according to any of claims 30 to 35, wherein before the first communication device determines the first candidate resource for sidelink transmission, the method further comprises:

The first communication device determining a second resource for sidelink transmission;

the first communication device determines the first candidate resource from the second resources, and the first candidate resource meets at least one of the following conditions:

the method comprises the steps that an intersection exists between a union set of DRX activation periods corresponding to first services in a time domain, wherein the first services comprise current services and/or historical services;

and the intersection exists between the current service and the union of DRX activation periods corresponding to the non-periodic service in the historical services in the time domain.

38. A method of communication, comprising:

the first communication device determines a third resource for sidelink transmission;

and if the third resource does not have an intersection with a Discontinuous Reception (DRX) activation period corresponding to a fourth service of the first communication equipment, triggering resource reselection by the first communication equipment.

39. The method of claim 38, wherein the third resource does not intersect DRX active periods corresponding to a fourth traffic, comprising:

the third resource does not have an intersection with a union set of a plurality of DRX activation periods corresponding to the fourth service; alternatively, the first and second electrodes may be,

the third resource does not intersect with at least one DRX activation period in a plurality of DRX activation periods corresponding to the fourth service; alternatively, the first and second electrodes may be,

And the third resource does not intersect with the DRX activation periods meeting the preset number in the DRX activation periods corresponding to the fourth service.

40. The method of claim 38 or 39, wherein the DRX activation period for the fourth service comprises at least one of: a DRX active period corresponding to a communication target, a DRX active period corresponding to a side link connection, a DRX active period corresponding to a source and target pair, a DRX active period corresponding to a side link connection, a DRX active period corresponding to a logical channel, a DRX active period corresponding to a resource pool, a DRX active period corresponding to a side link service, a DRX active period corresponding to a media access control layer protocol data unit (MAC PDU), and a DRX active period corresponding to a transport block TB.

41. A method of communication, comprising:

the first communication device determines a second active period which is the union of the DRX active periods in at least one Discontinuous Reception (DRX) configuration on a time domain;

the first communication equipment monitors side link control information (SCI) in the second activation period, wherein the SCI is used for indicating resources used by other communication equipment for side link transmission;

and the first communication equipment measures in the second activation period according to the SCI.

42. The method of claim 41, wherein the at least one DRX configuration comprises a DRX configuration for a first traffic.

43. The method of claim 42, wherein the first service comprises at least one of: communication target, side link connection, source and target pair, side link connection, logic channel, resource pool, side link service, media access control layer protocol data unit MAC PDU and transmission block TB.

44. A method of communication, comprising:

the first communication device determining a fourth resource for sidelink transmissions;

the first communication device determines a third candidate resource from the fourth resources, where the third candidate resource satisfies at least one of the following conditions:

the method comprises the steps that an intersection exists between a time domain and a union set of Discontinuous Reception (DRX) active periods corresponding to first services, wherein the first services comprise current services and/or historical services;

intersection exists between the current service and the union set of DRX activation periods corresponding to the non-periodic service in the historical service in the time domain;

wherein the third candidate resource is used to determine a fifth resource for sidelink transmission.

45. The method of claim 44, wherein the DRX activation period for the first service comprises at least one of: a DRX active period corresponding to a communication target, a DRX active period corresponding to a side link connection, a DRX active period corresponding to a source and target pair, a DRX active period corresponding to a side link connection, a DRX active period corresponding to a logical channel, a DRX active period corresponding to a resource pool, a DRX active period corresponding to a side link service, a DRX active period corresponding to a media access control layer protocol data unit (MAC PDU), and a DRX active period corresponding to a transport block TB.

46. A method of communication, comprising:

the method comprises the steps that a first communication device determines that a first resource pool or resources in the first resource pool meet a third condition, wherein the first resource pool is a resource pool for the first communication device to select resources currently;

the first communication equipment carries out Discontinuous Reception (DRX) configuration, and/or instructs second communication equipment to carry out DRX configuration, and side link communication is carried out between the first communication equipment and the second communication equipment.

47. The method of claim 46, wherein the third condition comprises at least one of:

the channel congestion rate CBR of the current resource pool meets a fourth condition;

the number of times that the CRB meets the fourth condition reaches a first threshold;

the first communication device triggering a resource pool reselection;

the frequency of triggering the resource pool reselection by the first communication equipment reaches a second threshold value;

the packet loss rate of the second communication device satisfies a fifth condition or the number of times that the packet loss rate of the second communication device satisfies the fifth condition reaches a third threshold.

48. The method of claim 47, wherein the fourth condition comprises: the CBR is larger than a first preset value, or the CBR is positioned in a first preset interval; and/or the presence of a gas in the gas,

The fifth condition includes: and the packet loss rate is greater than a second preset value, or the packet loss rate is within a second preset interval.

49. The method according to any of claims 46 to 48, wherein the first communication device instructs the second communication device to perform DRX configuration, comprising:

the first communication equipment sends a first indication message to second communication equipment, wherein the first indication message is used for informing the second communication equipment that the current resource pool of the first communication equipment or resources in the current resource pool meet a third condition; alternatively, the first and second electrodes may be,

the first communication equipment sends a second indication message to the second communication equipment, wherein the second indication message is used for indicating the second communication equipment to carry out DRX configuration; and/or the presence of a gas in the gas,

the first communication equipment sends a third indication message to the second communication equipment, wherein the third indication message is used for indicating DRX configuration information.

50. The method of any one of claims 46 to 49, further comprising:

the first communication device receives a fourth indication message from the second communication device, where the fourth indication message is used to indicate a packet loss rate or the packet loss rate satisfies the fifth condition.

51. A communication apparatus, characterized in that the apparatus is configured to perform the communication method according to any one of claims 1 to 50.

52. A communications apparatus, comprising: a processor and a memory; the processor is coupled with the memory, and the processor is configured to read and execute instructions in the memory to implement the communication method according to any one of claims 1 to 50.

53. A communication system, comprising: a communications device according to claim 52.

54. A computer-readable storage medium having stored thereon a computer program or instructions, which when executed cause a computer to perform the communication method of any one of claims 1 to 50.

Technical Field

The present application relates to the field of communications, and in particular, to a communication method and apparatus.

Background

New Radio (NR) systems are currently the mainstream wireless communication technologies, which aim to support lower delay, higher reliability V2X communication for vehicle networking (V2X) traffic characteristics and new traffic transmission requirements. However, in the sidelink (sidelink), the receiving terminal device (RX UE) always listens to Sidelink Control Information (SCI) and checks whether there is information from the transmitting terminal device (TX UE).

However, in the scenario where the UE autonomously selects resources, the RX UE does not always perform effective information interaction with the TX UE. Then, when there is no data interaction between the transceiving UEs, the power consumption of the RX UE may be increased if the RX UE is still continuously listening to the SCI.

Disclosure of Invention

The application provides a communication method and device to save power consumption of RX UE.

In a first aspect, the present application provides a communication method, which may be applied to a communication system, and the communication system may be applied to a sidelink communication system, such as a car networking system. The method can comprise the following steps: the first communication equipment determines a first candidate resource and a first service for sidelink transmission; the first communication device determines a first resource from the first candidate resources; the first resource and a first active period intersect in a time domain, and the first active period is determined according to a DRX active period corresponding to the first service.

In the application, the first communication device selects a resource having an intersection with a DRX active period corresponding to the first service as a reserved resource, and performs sidelink transmission using the reserved resource, so that the first communication device can receive a transmission from a second communication device (such as TX UE) in the active period, power consumption of RX UE is saved, and sidelink transmission between the first communication device and the second communication device is ensured.

Based on the first aspect, in some possible implementations, the determining, by the first communication device, the first resource from the first candidate resources includes: the first communication device determines a resource which is intersected with the first activation period in the time domain in the first candidate resource as a second candidate resource; the first communication device determines the first resource from the second candidate resources.

Based on the first aspect, in some possible implementations, the determining, by the first communication device, a resource that intersects with the first activation period in a time domain from among the first candidate resources as the second candidate resource includes: the first communication device determines a resource included in the first activation period in the time domain among the first candidate resources as a second candidate resource.

Based on the first aspect, in some possible embodiments, in order to improve the matching degree of the reserved resource and the DRX active period of the first service, in a scenario with multiple destination IDs, before the first communication device starts side link transmission using the first resource, the second service may further be selected from the first service, and at this time, the first communication device may select, from the multiple destination IDs, a destination ID where a corresponding DRX active period and the first resource intersect in a time domain.

Based on the first aspect, in some possible embodiments, to improve the matching degree of the reserved resources and the DRX active period of the first service, the method may further include: the first communication device determining a first activation period; the first communication device listens for the SCI during a first active period; here, SCI is used to indicate the resources used by other UEs for sidelink transmission.

In this application, after determining the first activation period, the MAC layer of the first communication device indicates the first activation period to the physical layer of the first communication device, and the physical layer monitors SCIs sent by other UEs in the first activation period, and then the physical layer performs measurement in the first activation period.

Based on the first aspect, in some possible embodiments, the first communication device determines a union of the DRX active periods in the at least one DRX configuration in the time domain, i.e. the first active period, where the at least one DRX configuration may be part or all of the DRX configurations that the first communication device can determine. It is to be appreciated that the at least one DRX configuration can include a DRX configuration for the first traffic.

Further, the first communication device performs measurements during the first activation period.

In the present application, the measurement may include measuring PSCCH-RSRP or psch-RSRP; alternatively, the S-RSSI is measured. Wherein PSCCH-RSRP is obtained by measuring DMRS associated with PSCCH, and PSSCH-RSRP is obtained by measuring DMRS associated with PSSCH.

It is understood that the first communication device listens to SCIs sent by other UEs in the first active period, and then the resource indicated by the SCIs is located in the first active period, and then the first communication device performs measurement on the resource indicated by the SCIs, which may also be considered as performing measurement in the first active period.

Based on the first aspect, in some possible embodiments, in order to improve the matching degree of the reserved resources and the DRX active periods of the first service, the first communication device may further perform resource exclusion, and when performing resource exclusion within the selection window, the MAC layer of the first communication device first indicates to the physical layer a union of the DRX active periods corresponding to the first service and/or a union of the DRX active periods corresponding to the current service in the first service and the non-periodic service in the historical services, that is, the first active period, and then the physical layer excludes resources from the second resources, and determines resources intersecting with the union as the first candidate resources, where it is understood that the first candidate resources need to satisfy at least one of the following conditions: intersection exists between the time domain and the union set of the DRX activation periods corresponding to the first service; and an intersection exists between the current service in the first service and the union of the DRX activation periods corresponding to the non-periodic service in the historical service in the time domain.

In this application, the second resource may be a resource corresponding to the resource determined by the physical layer through sending in the selection window, or may be a resource corresponding to the resource after the physical layer excludes the resource from the resource determined by sending in the selection window.

In some optional embodiments, the physical layer may further exclude resources from the first candidate resources.

In a second aspect, the present application provides a communication method, which can be applied to a communication system, and the communication system can be applied to a sidelink communication system, such as a car networking system. The method can comprise the following steps: in a scenario where the first service includes multiple destination IDs, before the first communication device starts side link transmission using the first resource, the second communication device may further select a second service from the first service, and at this time, the first communication device may select, from the multiple destination IDs, a destination ID where a corresponding DRX active period and the first resource intersect in a time domain.

In a third aspect, an embodiment of the present application provides a communication method, which may be applied to a communication system, where the communication system may be applied to a sidelink communication system, such as a car networking system. The method can comprise the following steps: the first communication device determines a second activation period; the first communication device listens for the SCI in a second active period;

Here, SCI is used to indicate the resources used by other UEs for sidelink transmission.

In this application, after determining the second activation period, the MAC layer of the first communication device indicates the second activation period to the physical layer of the first communication device, and the physical layer monitors SCIs sent by other UEs in the second activation period, and then the physical layer performs measurement in the second activation period.

Based on the third aspect, in some possible embodiments, the first communication device determines a union of the DRX active periods in the at least one DRX configuration in the time domain, that is, the second active period, where the at least one DRX configuration may be part or all of the DRX configurations that the first communication device can determine. It is to be appreciated that the at least one DRX configuration can include a DRX configuration for the first traffic.

Further, the first communication device performs sending in the second active period, and demodulates SCIs of other UEs to obtain resource occupation conditions of the other UEs.

In the application, the first communication device selects a resource with an intersection (i.e., the second active period) with the DRX active period corresponding to the first service as a reserved resource, and performs sidelink transmission using the reserved resource, so that the first communication device can receive a transmission from the second communication device (e.g., TX UE) in the active period, power consumption of RX UE is saved, and sidelink transmission between the first communication device and the second communication device is guaranteed.

Based on the third aspect, in some possible embodiments, the first communication device may perform measurement according to the SCI in the second activation period, that is, perform measurement on resources indicated by the SCI.

In the present application, the above-mentioned "measurement" may include measuring PSCCH-RSRP or psch-RSRP; alternatively, the S-RSSI is measured. Wherein PSCCH-RSRP is determined for PSCCH associated DMRS measurements and PSSCH-RSRP is determined for PSSCH associated DMRS measurements.

It is to be understood that the first communication device listens to the SCI during the second active period, and then the resource indicated by the SCI is located during the second active period, and then the first communication device performs the measurement on the resource indicated by the SCI, which may also be considered as performing the measurement during the second active period.

Based on the third aspect, in some possible embodiments, to improve the matching degree of the reserved resources and the DRX active period of the first traffic, the first communication device may further determine a first candidate resource for sidelink transmission and the first traffic; the first communication device determines a first resource from the first candidate resources.

Based on the third aspect, in some possible embodiments, the determining, by the first communication device, the first resource from the first candidate resources includes: the first communication device determines a resource which is intersected with the second activation period in the time domain in the first candidate resource as a second candidate resource; the first communication device determines the first resource from the second candidate resources.

Based on the third aspect, in some possible embodiments, the determining, by the first communication device, a resource that intersects with the second activation period in a time domain in the first candidate resource as the second candidate resource includes: the first communication device determines a resource included in the second activation period in the time domain among the first candidate resources as a second candidate resource.

Based on the third aspect, in some possible embodiments, in order to improve the matching degree of the reserved resource and the DRX active period of the first service, in a scenario with multiple destination IDs, before the first communication device starts side link transmission using the first resource, the first service, that is, the destination ID may also be selected, and at this time, the first communication device may select, from the multiple destination IDs, a destination ID (for identifying the second service) whose corresponding DRX active period intersects with the first resource in the time domain, that is, an active period corresponding to the last selected destination ID intersects with the reserved resource in the time domain.

Based on the third aspect, in some possible embodiments, in order to improve the matching degree of the reserved resources and the DRX active periods of the first service, the first communication device may further perform resource exclusion, when performing resource exclusion within the selection window, the MAC layer of the first communication device first indicates to the physical layer a union of the DRX active periods corresponding to the first service and/or a union of the DRX active periods corresponding to the current service in the first service and the non-periodic service in the historical services, that is, a second active period, and then the physical layer performs resource exclusion from the second resource, and determines a resource intersecting with the union as a third candidate resource, that is, the third candidate resource needs to satisfy at least one of the following conditions: intersection exists between the time domain and the union set of the DRX activation periods corresponding to the first service; and an intersection exists between the current service in the first service and the union of the DRX activation periods corresponding to the non-periodic service in the historical service in the time domain. It may be understood that the third candidate resource may be the first candidate resource, and of course, the physical layer may further perform the method described in S803 from the third candidate resource to determine the first candidate resource, which is not specifically limited in the embodiment of the present application.

In a fourth aspect, the present application provides a communication method, which can be applied to a communication system, and the communication system can be applied to a sidelink communication system, such as a car networking system. The method can comprise the following steps: the first communication device determines a fourth resource; the first communication device determines a third candidate resource from the fourth resource; here, the third candidate resource needs to satisfy at least one of the following conditions: intersection exists between the time domain and the union set of the DRX activation periods corresponding to the first service; and an intersection exists between the time domain and the union of DRX activation periods corresponding to the current service in the first service and the non-periodic service in the historical service.

Based on the fourth aspect, in some possible embodiments, when the first communication device performs resource exclusion within the selection window, the MAC layer of the first communication device first indicates to the physical layer a union of DRX active periods corresponding to the first service and/or a union of DRX active periods corresponding to current service in the first service and non-periodic service in historical service, that is, the first active period, and then the physical layer performs resource exclusion from the fourth resource, and determines a resource intersecting with the union as a third candidate resource, that is, the third candidate resource needs to satisfy at least one of the following conditions: intersection exists between the time domain and the union set of the DRX activation periods corresponding to the first service; and an intersection exists between the current service in the first service and the union of the DRX activation periods corresponding to the non-periodic service in the historical service in the time domain.

In this application, the physical layer may also further exclude resources from the third candidate resources, and the embodiments of this application are not specifically limited.

In this application, the fourth resource may be a resource in the selection window, or may be a resource left after resource exclusion is performed on the resource in the selection window.

Based on the fourth aspect, in some possible embodiments, to improve the matching degree of the reserved resources and the DRX active period of the first service, the method further includes: the first communication device determining a first activation period; the first communication device listens for a SCI during a first active period.

Here, SCI is used to indicate the resources used by other UEs for sidelink transmission.

Based on the fourth aspect, in some possible embodiments, the first communication device determines a union of the DRX active periods in the at least one DRX configuration in the time domain, i.e. the first active period, where the at least one DRX configuration may be part or all of the DRX configurations that the first communication device is able to determine. It is to be appreciated that the at least one DRX configuration can include a DRX configuration for the first traffic.

Based on the fourth aspect, in some possible embodiments, to improve the matching degree of the reserved resources and the DRX active period of the first traffic, the first communication device may further determine a third candidate resource for sidelink transmission and the first traffic; the first communication device determines a fifth resource from the third candidate resources.

Based on the fourth aspect, in some possible embodiments, the determining, by the first communication device, the first resource from the third candidate resources includes: the first communication device determines a resource which is intersected with the first activation period in the time domain in the third candidate resource as a fourth candidate resource; the first communication device determines the first resource from the fourth candidate resources.

Based on the fourth aspect, in some possible embodiments, the determining, by the first communication device, a resource that intersects with the first activation period in a time domain in the third candidate resource as a fourth candidate resource includes: the first communication device determines a resource included in the first active period in the time domain among the third candidate resources as a fourth candidate resource.

Based on the fourth aspect, in some possible embodiments, in order to improve the matching degree of the reserved resource and the DRX active period of the first service, in a scenario with multiple destination IDs, before starting side link transmission using the fifth resource, the first communication device may further select the first service, that is, the communication destination, where the corresponding DRX active period and the fifth resource intersect in the time domain, from the multiple destination IDs, and the communication destination identified by the selected destination ID is the selected second service, that is, the DRX active period corresponding to the last selected destination ID and the reserved resource intersect in the time domain.

In a fifth aspect, the present application provides a communication method, which can be applied to a communication system, and the communication system can be applied to a sidelink communication system, such as a car networking system. The method can comprise the following steps: the first communication device determines a second active period, wherein the second active period is the union of the DRX active periods in at least one discontinuous reception DRX configuration on a time domain; the first communication equipment monitors sidelink control information SCI in a second activation period, wherein the SCI is used for indicating resources used by other communication equipment for sidelink transmission;

Further, the first communication device performs measurements during a second active period according to the SCI.

Based on the fifth aspect, in some possible embodiments, the at least one DRX configuration includes a DRX configuration of the first traffic.

In a sixth aspect, an embodiment of the present application provides a communication method, which may be applied to a communication system, where the communication system may be applied to a sidelink communication system, such as a car networking system. The method can comprise the following steps: the first communication device determining a fourth resource for sidelink transmissions; the first communication device determines a third candidate resource from the fourth resources, wherein the third candidate resource satisfies at least one of the following conditions: the method comprises the steps that an intersection exists between a time domain and a union set of discontinuous reception DRX activation periods corresponding to first services, wherein the first services comprise current services and/or historical services; intersection exists between the time domain and the union set of DRX activation periods corresponding to the current service and the non-periodic service in the historical service; wherein the third candidate resource is used to determine a fifth resource for sidelink transmission.

Based on the sixth aspect, in some possible embodiments, the DRX active period corresponding to the first traffic includes at least one of: a DRX active period corresponding to a communication target, a DRX active period corresponding to a sidelink connection, a DRX active period corresponding to a logical channel, a DRX active period corresponding to a resource pool, a DRX active period corresponding to a sidelink service, a DRX active period corresponding to a media access control layer protocol data unit (MAC PDU), and a DRX active period corresponding to a Transport Block (TB).

In a seventh aspect, an embodiment of the present application provides a communication method, which may be applied to a communication system, where the communication system may be applied to a sidelink communication system, such as a car networking system. The method can comprise the following steps: the first communication device determines a third resource for sidelink transmission; and if the third resource does not have an intersection with the discontinuous reception DRX activation period corresponding to the fourth service of the first communication equipment, triggering the resource reselection by the first communication equipment.

Based on the seventh aspect, in some possible embodiments, the absence of intersection of the third resource with the DRX active periods corresponding to the fourth traffic includes: the intersection does not exist between the third resource and the union set of the plurality of DRX activation periods corresponding to the fourth service; or the third resource does not intersect with at least one DRX activation period in the plurality of DRX activation periods corresponding to the first service; or, there is no intersection between the third resource and DRX active periods satisfying a preset number in the multiple DRX active periods corresponding to the fourth service.

Based on the seventh aspect, in some possible embodiments, the DRX active period corresponding to the first traffic includes at least one of: a DRX active period corresponding to a communication target, a DRX active period corresponding to a side link connection, a DRX active period corresponding to a source and target pair, a DRX active period corresponding to a side link connection, a DRX active period corresponding to a logical channel, a DRX active period corresponding to a resource pool, a DRX active period corresponding to a side link service, a DRX active period corresponding to a media access control layer protocol data unit (MAC PDU), and a DRX active period corresponding to a transport block TB.

Based on the seventh aspect, in some possible embodiments, the first communication device may further configure a cycle for the third resource, and then the first communication device may configure a DRX cycle (i.e., DRX cycle) that satisfies the second condition in the DRX configuration corresponding to the fourth service as a cycle corresponding to the third resource.

Here, the second condition may include: the minimum value of the DRX cycle in the DRX configuration corresponding to the fourth service, the DRX cycle in the DRX configuration corresponding to the first service being smaller than the preset threshold, the DRX cycle in the DRX configuration corresponding to the fourth service being smaller than 20%, and the like.

In the embodiment of the present application, the period of the first resource is selected as the minimum value of all DRX configured periods corresponding to the fourth service, so that the period in which the first communication device wakes up to monitor the SCI is matched with the period in which the fourth service is sent, thereby improving the probability that the sidelink resource is effectively utilized.

In this application, in the first to sixth aspects and any possible implementation manner thereof, the first communication device may perform the method of the seventh aspect and any possible implementation manner thereof when evaluating the selected third resource. The first communication device may evaluate the third resource (i.e., the reserved resource selected by the first communication device), and if the first communication device determines that the third resource does not intersect with the DRX active periods corresponding to the fourth traffic of the first communication device, the first communication device triggers resource reselection to reselect the resource that intersects with the DRX active periods of the first traffic.

In an eighth aspect, an embodiment of the present application provides a communication method, which may be applied to a communication system, where the communication system may be applied to a sidelink communication system, such as a car networking system. The method can comprise the following steps: the first communication device may configure a cycle for the resource, and then the first communication device may configure, as the cycle corresponding to the resource, a DRX cycle (i.e., DRX cycle) that satisfies the second condition in a DRX configuration corresponding to the fifth service of the first communication device.

Here, the second condition may include: the minimum value of the DRX cycle in the DRX configuration corresponding to the fifth service, the DRX cycle in the DRX configuration corresponding to the first service being smaller than the preset threshold, the DRX cycle in the DRX configuration corresponding to the first service being smaller than 20%, and the like.

In the application, the first communication device selects the period of the selected resource as the minimum value of all DRX configured periods corresponding to the fifth service, so that the period in which the first communication device wakes up to monitor the SCI is matched with the period in which the fifth service is sent, thereby improving the probability that the sidelink resource is effectively utilized.

In this application, in the first to seventh aspects and any possible implementation manner thereof, the first communication device may perform the method described in the eighth aspect and any possible implementation manner thereof when configuring the cycle for the resource.

In an eighth aspect, an embodiment of the present application provides a communication method, which may be applied to a communication system, where the communication system may be applied to a sidelink communication system, such as a car networking system. The method can comprise the following steps: the first communication device determines that the first resource pool or resources in the first resource pool meet a third condition; the first communication device performs DRX configuration and/or the first communication device instructs the second communication device to perform DRX configuration to enable the first communication device to select a resource pool that can be used for sidelink transmissions.

Here, the first resource pool is a resource pool in which the first communication device currently performs resource selection;

in some possible embodiments, based on the eighth aspect, the third condition includes: the channel congestion rate (CBR) of the current resource pool satisfies a fourth condition, for example, the fourth condition may be that the CBR is greater than a preset value (may be an empirical value) or is within a preset range, the first communication device triggers the resource pool to reselect, and/or the packet loss rate satisfies a fifth condition, for example, the fifth condition may be that the packet loss rate is greater than a preset value (may be an empirical value), or the packet loss rate is within a preset range, and the like.

In some possible embodiments, the third condition may further include one or a combination of a plurality of the following conditions: the CBR meets the condition that the fourth condition reaches a first threshold value, the frequency of triggering the resource pool reselection by the first communication equipment reaches a second threshold value, and the frequency of meeting the condition that the packet loss rate of the second communication equipment meets a fifth condition reaches a third threshold value. The first threshold, the second threshold, and the third threshold may be empirical values.

In this application, after determining that the first resource pool or resources in the first resource pool satisfy the third condition, the first communication device performs DRX configuration, so that the first communication device selects a resource pool that can be used for sidelink transmission.

It should be noted that the term "DRX configuration" herein may be understood as performing DRX configuration according to reserved resources, for example, performing DRX reconfiguration according to reserved resources, so that the reserved resources intersect with the reconfigured DRX active period in the time domain; or performing DRX initial configuration according to the reserved resources, so that the reserved resources and the configured DRX activation period have intersection in the time domain.

In this application, after the first communication device determines that the first resource pool or resources in the first resource pool satisfy the third condition, the second communication device is instructed to select a resource pool that can be used for sidelink transmission.

Based on the eighth aspect, in some possible embodiments, the first communication device sends a first indication message to the second communication device, where the first indication message is used to notify the second communication device that the current resource pool of the first communication device or resources in the current resource pool satisfy the third condition; or the first communication device sends a second indication message to the second communication device, wherein the second indication message is used for indicating the second communication device to perform DRX configuration; and/or the first communication equipment sends a third indication message to the second communication equipment, wherein the third indication message is used for indicating the DRX configuration information.

Based on the eighth aspect, in some possible embodiments, if the first communication device is a TX UE, the first communication device may further receive a fourth indication message from the second communication device (RX UE), where the fourth indication message is used to indicate that the packet loss rate or the packet loss rate satisfies a fifth condition, for example, the fifth condition may be that the packet loss rate is greater than a preset value (may be an empirical value), or the packet loss rate is within a preset range, or the like.

In a ninth aspect, the present application provides a communication method, which can be applied to a communication system, and the communication system can be applied to a sidelink communication system, such as a car networking system. The method can comprise the following steps: if the first discontinuous reception DRX configuration information is not matched with the first resource configuration information, the first communication equipment sends the first information to the second communication equipment and/or sends the second information to the third communication equipment; the first DRX configuration information is used for a first sidelink corresponding to the first communication device, the first resource configuration information is used for a second sidelink corresponding to the first communication device, the first information is used for indicating the second communication device to perform DRX configuration for the first sidelink, and the second information is used for indicating the third communication device to perform resource configuration for the second sidelink.

In some possible implementations, the first sidelink may be one or more sidelinks, and the second sidelink may also be one or more sidelinks. It should be noted that when the first side link is one side link, the second side link and the first side link may be the same side link, or the second side link and the first side link are different side links, and when the first side link is multiple side links, the second side link may be one or more of the first side links, that is, the second side link is a partial side link or a full side link of the first side link.

In some possible implementations, since the DRX configuration information and the resource configuration information are configured by different bodies, the DRX active period indicated by the first DRX configuration information and the time zone indicated by the first resource configuration information may have a conflict in one or more time periods, and at this time, it may be referred to that the first DRX configuration information does not match the first resource configuration information.

Optionally, the "one time period" may refer to a time slot corresponding to an occurred time domain interval, or may refer to a time slot corresponding to an unexecuted time domain interval.

Further, the conflict between the DRX active period indicated by the first DRX configuration information and the time domain interval indicated by the first resource configuration information in a time period includes: the number of the time slots of the n DRX activation periods overlapped with the time domain interval is smaller than a preset threshold value, and n is a positive integer. For example, the number of time slots where the n DRX active periods overlap with the time domain interval is smaller than a preset threshold includes: the number of overlapped time slots divided by n times of the time slots of the DRX active period is less than a preset threshold value.

In this application, when the first communication device determines that the SL resource does not match the SL DRX, the first communication device sends the first information to the second communication device and/or sends the second information to the third communication device, so that the SL resource configured by the second communication device and/or the third communication device matches the SL DRX.

In some possible embodiments, the first resource configuration information is current resource configuration information of the first communication device; the method further comprises the following steps: the first communication device receiving first DRX configuration information from a second communication device; the first communication device determines that the first DRX configuration information does not match the first resource configuration information.

Based on the ninth aspect, in some possible embodiments, the first communication device is a sending terminal device, the second communication device is a receiving terminal device, and the third communication device is a network device to which the sending terminal device belongs; the first resource allocation information may be used to indicate a resource allocated by the base station in mode1 for the sending terminal device, and may also be used to indicate a resource pool corresponding to the sending terminal device in mode 2.

Based on the ninth aspect, in some possible embodiments, the first communication device is a receiving terminal device, the second communication device is a sending terminal device, and the third communication device is a network device to which the receiving terminal device belongs; the first resource configuration information is used to indicate a receiving resource corresponding to the receiving terminal device in mode2, where the receiving resource is used for the first sidelink.

Based on the ninth aspect, in some possible embodiments, the first communication device is a receiving terminal device, the third communication device is a sending terminal device, and the second communication device is a network device to which the receiving terminal device belongs; the first resource configuration information comprises resource configuration information used for indicating the receiving terminal equipment to sense.

Further, the first communication device may be an auxiliary user device, the second communication device may be a network device to which the auxiliary user device belongs, and the third communication device may be an assisted user device; wherein the first resource configuration information comprises resource configuration information for indicating the first communication device to perceive.

Based on the ninth aspect, in some possible embodiments, the first communication device is a receiving terminal device, the second communication device is a sending terminal device, and the third communication device is a network device to which the receiving terminal device belongs; the first resource configuration information is used for the receiving terminal device to serve as a second sidelink between the sending terminal device and another terminal device (i.e., a fourth communication device), and the first resource configuration information is used for instructing the receiving terminal device to send sidelink data on the second sidelink.

Based on the ninth aspect, in some possible embodiments, the first communication device is a receiving terminal device, the second communication device is a network device to which the receiving terminal device belongs, and the third communication device is a sending terminal device; the first resource configuration information is used for indicating one or more resource sets corresponding to the receiving terminal device.

Further, the first communication device may be an assisted user equipment, the second communication device may be a network device to which the assisted user equipment belongs, and the third communication device may be an assisting user equipment; the first resource configuration information is used for indicating one or more resource sets corresponding to the assisted user equipment.

Based on the ninth aspect, in some possible embodiments, the first communication device sends the second information to the third communication device, including: the method comprises the steps that a first communication device sends mode switching request information to a third communication device, wherein the mode switching request information is used for requesting the third communication device to switch a resource allocation mode of the first communication device from a first mode to a second mode; or, the first communication device sends resource configuration request information to the third communication device; wherein the resource allocation request information includes at least one of: the request reason for indicating that the DRX configuration information is not matched with the resource configuration information, the first DRX configuration information, the identification information corresponding to the first DRX configuration information, the expected resource configuration information or the resource adjustment amount.

Optionally, the resource allocation pattern of the first communication device includes a mode1 and a mode 2. The first mode is mode1, then the second mode is mode 2; alternatively, the first mode is mode2 and the second resource is mode 1.

Wherein, under mode1, the base station allocates SL transmission resources to the transmitting terminal device by scheduling; under mode2, the terminal device autonomously selects transmission resources from a pre-configured or base station configured resource pool as needed without the need for scheduling by the base station.

In some possible embodiments, the sending, by the first communication device, the first information to the second communication device may include: the first communication device sends DRX configuration failure information to the second communication device.

Illustratively, the DRX configuration failure information includes at least one of: the third information is used for indicating DRX configuration failure, the identification information corresponding to the DRX configuration information, the configuration failure type is used for indicating that the DRX configuration information is not matched with the resource configuration information, the effective duration of the DRX configuration for the first communication equipment is not allowed to be configured by the second communication equipment, the first resource configuration information, the expected DRX configuration information, the DRX adjustment amount and the corresponding identification information.

Based on the ninth aspect, in some possible embodiments, the sending, by the first communication device, DRX configuration failure information to the second communication device includes: the first communication equipment receives DRX configuration failure information sent by the third communication equipment; the first communication equipment sends DRX configuration failure information to the second communication equipment; or, the first communication device starts the timer after sending the resource configuration request information to the third communication device; and when the timer is overtime and the first communication equipment does not receive the resource configuration information sent by the third communication equipment, the first communication equipment sends DRX configuration failure information to the second communication equipment.

In some possible embodiments, the DRX configuration failure information is further used to trigger the second communication device to send fourth information to a network device to which the second communication device belongs, where the fourth information is used to indicate that the DRX configuration corresponding to the first sidelink fails.

It can be understood that the fourth information may be the above DRX configuration failure information, that is, the receiving terminal device forwards the DRX configuration failure information to the base station to which the receiving terminal device belongs, or the fourth information may further include indication information generated by the receiving terminal device based on the DRX configuration failure information, so as to indicate that the DRX configuration corresponding to the first sidelink fails.

The identification information may include at least one of: target identification, source identification, side link connection identification, source and target identification pair, side link connection identification, logical channel identification, resource pool identification, side link service identification, media access control layer protocol data unit MAC PDU identification, and transport block TB identification.

Based on the ninth aspect, in some possible embodiments, the first DRX configuration information is current DRX configuration information of the first communication device; the method further comprises the following steps: the first communication equipment receives first resource configuration information from the third communication equipment; the first communication device determines that the first DRX configuration information does not match the first resource configuration information.

Based on the ninth aspect, in some possible embodiments, the first communication device is a receiving terminal device, the second communication device is a network device to which the receiving terminal device belongs, and the third communication device is the receiving terminal device. The first resource configuration information is used to indicate a receiving resource corresponding to the terminal device in mode 2.

Based on the ninth aspect, in some possible embodiments, the first communication device is a receiving terminal device, the second communication device is a network device of the receiving terminal device, and the third communication device is a sending terminal device; the first resource configuration information comprises resource configuration information used for indicating the receiving terminal equipment to sense.

Further, the first communication device may be an assisted user equipment, the second communication device may be a network device to which the assisted user equipment belongs, and the third communication device may be an assisting user equipment; wherein the first resource configuration information comprises resource configuration information for indicating the first communication device to perceive.

Based on the ninth aspect, in some possible embodiments, the first communication device is a receiving terminal device, the second communication device is a sending terminal device, and the third communication device is a network device to which the receiving terminal device belongs; the first resource allocation information is used to receive side link data sent by the terminal device on the second side link with another terminal device (i.e., the fourth communication device), and it can also be understood that the first resource allocation information is used to receive side link data sent by the terminal device to another terminal device.

Further, the first communication device is an assisted user device, the second communication device is a network device to which the assisted user device belongs, and the third communication device is an assisting user device.

Based on the ninth aspect, in some possible embodiments, the first communication device sends the second information to the third communication device, including: the method comprises the steps that a first communication device sends mode switching request information to a third communication device, wherein the mode switching request information is used for requesting the third communication device to switch a resource allocation mode of the first communication device from a first mode to a second mode and configure resources for the first communication device according to the second mode; or, the first communication device sends resource configuration failure information to the third communication device, where the resource configuration failure information includes at least one of: and the fifth information is used for indicating the resource configuration failure and indicating the configuration failure type of the resource configuration information which is not matched with the DRX configuration information, the first DRX configuration information, the identification information corresponding to the first DRX configuration information, the expected resource configuration information or the resource adjustment amount.

Based on the ninth aspect, in some possible embodiments, the first communication device sends the first information to the second communication device, including: the first communication equipment sends DRX configuration request information to the third communication equipment; wherein the DRX configuration request information includes at least one of: for indicating a request reason why the DRX configuration information does not match the resource configuration information, the first resource configuration information, a desired DRX configuration, or a DRX adjustment amount.

Based on the ninth aspect, in some possible embodiments, the sending, by the first communication device, the first information to the second communication device, and the sending, by the first communication device, the second information to the third communication device includes: the first communication device sends resource configuration failure information to the second communication device and sends DRX configuration request information to the third communication device. In a tenth aspect, the present application provides a communication apparatus for performing the communication method as described in the first to ninth aspects and any possible implementation manner thereof.

In an eleventh aspect, the present application provides a communication apparatus comprising: a processor and a memory; a processor is coupled to the memory, the processor being configured to read and execute instructions in the memory to implement the communication method as described in the first to ninth aspects and any possible implementation thereof.

In a twelfth aspect, the present application provides a communication system, comprising: a communication device as described in the eleventh aspect and any possible implementation thereof.

In a thirteenth aspect, the present application provides a computer-readable storage medium having stored thereon a computer program or instructions which, when executed, cause a computer to perform the communication method as described in the first to ninth aspects and any possible implementation thereof.

It should be understood that the ninth to twelfth aspects of the present application are consistent with the technical solutions of the first to eighth aspects of the present application, and the beneficial effects achieved by the aspects and the corresponding possible embodiments are similar and will not be described again.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments or the background art of the present application, the drawings required to be used in the embodiments or the background art of the present application will be described below.

Fig. 1 is a schematic structural diagram of a communication system in an embodiment of the present application;

fig. 2 is a schematic diagram of another architecture of a communication system according to an embodiment of the present application;

fig. 3 is a schematic flowchart of a communication method in a scenario where a UE autonomously selects a resource in an embodiment of the present application;

fig. 4 is a first diagram illustrating resources and DRX active periods according to an embodiment of the present invention;

fig. 5 is a second diagram illustrating resources and DRX active periods in an embodiment of the present application;

fig. 6 is a third diagram illustrating resources and DRX active periods in an embodiment of the present application;

fig. 7 is a first flowchart of a first communication device side communication method in the embodiment of the present application;

fig. 8 is a second flowchart of a first communication device side communication method in the embodiment of the present application;

fig. 9 is a third flowchart of a first communication device side communication method in this embodiment of the present application;

fig. 10 is a diagram illustrating a DRX active period corresponding to resources and current traffic in an embodiment of the present application;

fig. 11 is a flowchart illustrating a communication method according to an embodiment of the present application;

fig. 12 is a schematic structural diagram of a communication device in the embodiment of the present application;

fig. 13 is another schematic structural diagram of a communication device in the embodiment of the present application;

Fig. 14 is a schematic diagram of another architecture of a communication system in an embodiment of the present application;

fig. 15 is a fourth flowchart illustrating a first communication device side communication method in the embodiment of the present application;

fig. 16 is a schematic diagram of a first scenario of resource configuration and DRX configuration in an embodiment of the present application;

fig. 17 is a schematic diagram of a second scenario of resource allocation and DRX allocation in the embodiment of the present application;

fig. 18 is a schematic diagram of a third scenario of resource configuration and DRX configuration in the embodiment of the present application;

fig. 19 is a diagram illustrating a fourth scenario of resource allocation and DRX allocation in the embodiment of the present application;

fig. 20 is a schematic diagram illustrating a fifth scenario of resource allocation and DRX allocation in the embodiment of the present application;

fig. 21 is a fifth flowchart illustrating a first communication device side communication method in the embodiment of the present application;

fig. 22 is a schematic diagram of a sixth scenario of resource allocation and DRX allocation in the embodiment of the present application;

fig. 23 is a schematic diagram of a seventh scenario of resource allocation and DRX allocation in the embodiment of the present application;

fig. 24 is an eighth scenario diagram of resource allocation and DRX allocation in the embodiment of the present application;

fig. 25 is a diagram illustrating a ninth scenario of resource allocation and DRX allocation in the embodiment of the present application;

Fig. 26 is a diagram illustrating a tenth scenario of resource allocation and DRX allocation in the embodiment of the present application;

fig. 27 is a schematic structural diagram of a communication device in the embodiment of the present application.

Detailed Description

The embodiments of the present application will be described below with reference to the drawings. In the following description, reference is made to the accompanying drawings which form a part hereof and in which is shown by way of illustration specific aspects of embodiments of the present application or in which specific aspects of embodiments of the present application may be employed. It should be understood that embodiments of the present application may be used in other ways and may include structural or logical changes not depicted in the drawings. For example, it should be understood that the disclosure in connection with the described methods may equally apply to the corresponding apparatus or system for performing the methods, and vice versa. For example, if one or more particular method steps are described, the corresponding apparatus may comprise one or more units, such as functional units, to perform the described one or more method steps (e.g., a unit performs one or more steps, or multiple units, each of which performs one or more of the multiple steps), even if such one or more units are not explicitly described or illustrated in the figures. On the other hand, for example, if a particular apparatus is described based on one or more units, such as functional units, the corresponding method may comprise one step to perform the functionality of the one or more units (e.g., one step performs the functionality of the one or more units, or multiple steps, each of which performs the functionality of one or more of the plurality of units), even if such one or more steps are not explicitly described or illustrated in the figures. Further, it is to be understood that features of the various exemplary embodiments and/or aspects described herein may be combined with each other, unless explicitly stated otherwise.

New Radio (NR) systems are currently the mainstream wireless communication technologies, which aim to support lower delay, higher reliability V2X communication for vehicle networking (V2X) traffic characteristics and new traffic transmission requirements. However, in Sidelink (SL), the receiving UE (RX UE) will always listen to the SCI to see if there is information from the sending UE (TX UE). However, in sidelink, there is not always traffic transmission between RX UE and TX UE. Then, when there is no data interaction between the transceiving UEs, the power consumption of the RX UE may be increased if the RX UE is still continuously listening to the SCI.

Then, in order to solve the problem of high power consumption caused by continuous monitoring of SCI by the UE in the sidelink, embodiments of the present application provide a communication method, where the communication method may be applied to a communication system, and the sidelink communication system may be a sidelink communication system, and the sidelink communication system may be adapted to the fields of vehicle networking (V2X), intelligent internet vehicles, auto-driving vehicles, and the like. The communication system may include at least one communication device. In a scenario, fig. 1 is a schematic structural diagram of a communication system in an embodiment of the present application, and referring to fig. 1, the communication system 10 may include: a network device 11 and a terminal device 12. In another scenario, fig. 2 is another schematic architecture diagram of the communication system in the embodiment of the present application, and referring to fig. 2, the communication system 10 may further include a plurality of terminal devices 12. Of course, in the embodiment of the present application, the type and number of the network elements included in the communication system, and the connection relationship between the network elements are not limited thereto.

In the embodiment of the application, the terminal device can communicate with other terminal devices while communicating with the network device. The network device may perform resource configuration, scheduling, coordination, and the like on a sidelink (sidelink) for communication between the terminal devices to assist the direct communication between the terminal devices. The terminal device may also perform resource configuration, scheduling, coordination, and the like for a side link of communication between other terminal devices, which is not specifically limited in the embodiment of the present application.

In some possible embodiments, the network device may be a device on an access network side for supporting a terminal to access a wireless communication system, and for example, may be a next generation base station (gNB), a Transmission Reception Point (TRP), a relay node (relay node), an Access Point (AP), a Road Side Unit (RSU), or the like in a 5G access technology communication system.

The terminal device may be a device providing voice or data connectivity to a user, and may also be referred to as a User Equipment (UE), a mobile STAtion (mobile STAtion), a subscriber unit (subscriber unit), a STAtion (STAtion), a Terminal Equipment (TE), or the like. The communication device may be a cellular phone (cellular phone), a Personal Digital Assistant (PDA), a wireless modem (modem), a handheld V2P device (hand held to personal), a laptop computer (laptop computer), a cordless phone (cordless phone), a Wireless Local Loop (WLL) station or tablet (pad), a relay node, an AP, etc. With the development of wireless communication technology, all devices that can access a wireless communication system, can communicate with a network side of the wireless communication system, or communicate with other devices through the wireless communication system may be terminal devices in the embodiments of the present application, such as a terminal in intelligent transportation, an automobile or an RSU, a home appliance in an intelligent home, a power meter reading instrument in an intelligent power grid, a voltage monitoring instrument, an environment monitoring instrument, a video monitoring instrument in an intelligent security network, a cash register, and the like. The communication device may be stationary or mobile.

Further, in the sidelink transmission scenario, the communication device (which may include a terminal device and/or a network device) may be divided into a sending end device and a receiving end device according to a data transmission direction. The sending end device may include a sending end network device, a sending end terminal device, a sending end user device, and the like; the receiving end device may include a receiving end network device, a receiving end user device, and the like.

It should be noted that the sending end device (or sending end network device, sending terminal device, sending end user device, etc.) and the receiving end device (or receiving end network device, receiving terminal device, receiving end user device, etc.) are for a sidelink connection (sidelink connection). For example, a communication device (or a network device, a terminal device, a user equipment, etc.) may be a sending end device (or a sending end network device, a sending end terminal device, a sending end user equipment, etc.) for the sidelink connection a; for the sidelink connection B, the communication device (or network device, terminal device, user device, etc.) may be a receiving end device (or receiving end network device, receiving end user device, etc.).

The following describes a communication method provided in an embodiment of the present application with reference to the above communication system.

In NR SL, a network device, such as a base station, configures resource pools for SL communication of a UE, where one resource pool is a collection of some time-frequency resources. The resource for the UE to communicate on the SL link is determined from a pre-configured or base station side configured resource pool. Specifically, there are two modes for the TX UE to acquire transmission resources from the network device for communication on the SL link, mode1 and mode2, respectively. The preconfigured resource may be obtained from a network element of a core network, or may be preset in the UE.

Under mode1, the base station allocates SL transmission resources to TX UEs by scheduling. In this mode, when the TX UE has SL pending transmission data, a Buffer Status Report (BSR) MAC CE is reported to the base station through the Uu port to inform the base station of the data amount of the current TX UE pending transmission data at the PC5 port. The base station may dynamically allocate transmission resources for the TX UE.

Under mode2, the UE autonomously selects transmission resources from a pre-configured or base station configured resource pool as needed without the need for base station scheduling. The SL resource determined by the UE is configured (e.g., configured by RRC signaling or System Information Block (SIB)) by the base station, or is pre-configured. The pre-configuration referred to herein may be obtained from a network element of the core network, or may be pre-configured in the UE.

In a UE-autonomous resource selection (i.e., mode2) scenario, a TX UE performs a resource selection for a service, such as a communication destination (indicated by a destination ID, e.g., destination L1 ID or destination L2 ID), a sidelink connection (e.g., Radio Resource Control (RRC) connection), an SL link, a source and destination pair (e.g., { source L2/L1 ID, destination L2/L1 ID }), a sidelink service, a logical channel, a resource pool, a Transport Block (TB), one or more medium access control layer packet data units (MAC PDUs), etc., to select at least one resource (which may typically include 1 to 3 resources for a retransmission opportunity and their corresponding periodic resources), which is used for new transmissions or services, the at least one resource may also be referred to as reserved resources.

Fig. 3 is a flowchart illustrating a communication method in a scenario where a UE autonomously selects a resource in an embodiment of the present application, and referring to fig. 3, the method may include:

s301: TX UE sensing (sensing);

the TX UE continuously monitors SCIs sent by other UEs and measures according to the indication of the SCIs to obtain a measurement result. Here, the TX UE demodulates the SCIs of other UEs after monitoring the SCIs of other UEs, and the demodulated SCIs can at least reflect the usage of resources on the sidelink.

In the embodiment of the present application, the "measurement" may include measurement based on a sidelink RSRP of a sidelink demodulation reference signal (DMRS), for example, measurement of Reference Signal Receiving Power (RSRP) of a PSCCH (i.e., PSCCH-RSRP) or psch-RSRP; alternatively, a sidelink received signal strength indicator (S-RSSI) or the like may also be measured. Wherein PSCCH-RSRP is determined for PSCCH associated DMRS measurements and PSSCH-RSRP is determined for PSSCH associated DMRS measurements. Of course, the UE may also measure other parameters of the resource indicated by the SCI, and this embodiment of the present application is not specifically limited.

S302: and the TX UE excludes the resources indicated by the SCI according to the obtained measurement result and determines a candidate resource set.

The TX UE excludes the resource whose measurement result satisfies a certain condition from the resources indicated by the SCI, so that a candidate resource set of the TX UE can be obtained, and then the TX UE can select a resource from the candidate resource set for transmission when transmitting traffic. For example, through S301, the TX UE measures the reference signal received power of the SCI to obtain PSCCH-RSRP or psch-RSRP, and then the TX UE may exclude resources that the PSCCH-RSRP or psch-RSRP meets a preset condition, or the TX UE may exclude resources occupied by other UEs according to an indication of the SCI, and further exclude resources that the TX UE occupies and that the RSRP is higher than a preset threshold.

In practical applications, the preset condition may be that the RSRP value is within a preset range, for example, the RSRP value is 20% before all measured RSRP values are sorted from large to small or from small to large, or the RSRP value is higher than 70% of all RSRP values, and of course, the preset condition may also be other conditions, for example, the preset condition may be set according to the transmission priority of the TX UE and the transmission priority indicated in the SCIs of other UEs, and the embodiment of the present application is not particularly limited.

In some possible embodiments, the TX UE may further demodulate the SCI through S301 to obtain a subcarrier spacing configuration of the resource, and the RX UE may further screen the resource according to the subcarrier spacing configuration of the resource, so that the selected subcarrier spacing can meet the resource required for transmission, so as to be used for subsequent sidelink transmission.

Of course, the TX UE may perform resource exclusion according to other conditions, and the application is not particularly limited.

S303: selecting resources for side link transmission from the candidate resource set by the TX UE;

wherein, the resource selected by the TX UE can be understood as a reserved resource.

After the service comes, the TX UE first checks the resource selection or the resource reselection to determine whether to trigger the resource selection or the reselection; if the resource selection or reselection is triggered, the TX UE determines a resource reservation period, the selected hybrid automatic repeat request (HARQ) retransmission times and the like; then, the TX UE selects a time-frequency resource for a transmission opportunity according to the selected number of frequency-domain resources and a Packet Delay Budget (PDB) of available side link data of a logical channel allowed on a carrier from the candidate resource set, and further, the TX UE may further use the selected time-domain resource to determine a good resource reservation period and then select a corresponding periodic resource set. If the TX UE determines that there is no retransmission, the time domain resource selected by the TX UE and the corresponding periodic resource set can be regarded as "selected SL grant"

Optionally, the TX UE determines that there is one or more retransmissions according to the HARQ retransmission times, and available resources are still available in the resources indicated by the physical layer for multiple transmission opportunities, and then selects time-frequency resources for the one or more transmission opportunities from the available resources according to the selected number of frequency-domain resources, the selected HARQ retransmission times, and the remaining PDBs of available SL data of the logical channels allowed on the carrier. Then, the corresponding periodic resource set is selected by utilizing the time-frequency resource and the resource reservation period, and the selected resource and the corresponding periodic resource set are regarded as 'selected SL grant' (resource)

In this embodiment of the application, the service in S303 may include: a combination of one or more of a communication target, a sidelink connection (such as a source and target pair, a sidelink link, and the like), a logical channel, a resource pool (resource pool), a sidelink service, a MAC PDU, a TB, and the like, which is not specifically limited in this embodiment of the present application. When the service is a MAC PDU, the number of MAC PDUs may be one or more. It should be noted that the communication destination may be identified by a destination ID (communication destination identifier), and the present application is not limited specifically.

S304: the TX UE reevaluates the reserved resources;

Before traffic transmission, the TX UE re-evaluates the reserved resources to see whether the reserved resources selected through S303 can be used for sidelink transmission, so as to ensure that the finally selected resources are available for sidelink transmission.

S305: if the evaluation result indicates that the reserved resources cannot be used for side link transmission, the TX UE triggers resource reselection and returns to S302;

s306: if the evaluation result shows that the reserved resources can be used for side link transmission, the TX UE starts side link transmission by adopting the reserved resources;

s307: in the process of using reserved resource transmission, the TX UE judges whether to trigger resource reselection;

in S305 and S307, the reserved resources may not be used for sidelink transmission for some reasons, and therefore, the TX UE needs to evaluate the first resource to determine whether to trigger resource reselection. For example, the reasons may include: configuring or reconfiguring a resource pool at an upper layer; or, no configured sidelink gram; or, there is no new transmission and no retransmission on any resource indicated by the configured sidelink grant by the MAC entity in the past one second; or, the sl-ReselectAfter is configured and the continuous unused transmission opportunity indicated by the configured scaled schedule reaches sl-ReselectAfter; or, the transmission resource indicated by the configured sidelink grant cannot meet the delay requirement of data on a certain logical channel determined according to the priority of the corresponding logical channel, and the MAC entity chooses not to transmit the corresponding single MAC PDU; or the priority of the logical channel indicated by the SCI received by the UE is higher than the priority of the logical channel of the data to be transmitted, a certain SL transmission scheduled by the SCI is expected to overlap with a certain currently reserved resource, and the SL-RSRP measurement result of the SL transmission indicated by the SCI is higher than the threshold. When the first resource satisfies any of the conditions described above, the reserved resources (if any) associated with the SL process are cleared and TX resource selection/reselection is triggered.

S308: if the resource reselection is triggered, the TX UE returns to S302;

s309: if not, the TX UE continues to use the reserved resources for side link transmission.

Through the above procedure, the TX UE autonomously selects resources for side link transmission. To save power consumption of the RX UE, the RX UE may be configured with a DRX function, one DRX cycle (DRX cycle) may be divided into an active period (on duration) and a sleep period (opportunity for DRX), and the time of "on duration" is the time when the UE monitors downlink PSCCH and/or PSCCH subframes, during which the UE is in an awake state and can receive transmissions from the TX UE; the period of "opportunity for DRX" is a DRX sleep time, i.e., the time when the UE enters a sleep state to save power, and turns off its receiver without monitoring PSCCH and/or PSCCH subframes. This may result in the RX UE entering a sleep period if it does not hear the SCI during the active period, thereby causing the RX UE to fail to receive sidelink transmissions on the resources selected by the TX UE.

In practical applications, the active period in the DRX configuration may be periodic.

Then, to solve this problem, embodiments of the present application provide a communication method, which can be applied to a first communication device, such as a TX UE, in the above communication system.

First, it should be noted that "the resource intersects with the DRX active period in the time domain" in the embodiment of the present application may be understood as follows: the resources are located in the time domain in whole or in part within the time range of the DRX active period. Conversely, "there is no intersection of the resource with the DRX active period in the time domain" can be understood as: the resource is located outside the time range of the DRX active period in the time domain, and the resource is separated from the DRX active period in the time domain. For example, fig. 4 is a first diagram of resources and a DRX active period in the embodiment of the present application, and referring to fig. 4, in a time domain, the resources are located within a time range of the DRX active period, that is, the resources are included in the DRX active period; alternatively, fig. 5 is a second diagram of resources and a DRX active period in the embodiment of the present application, and referring to fig. 5, in a time domain, a part of the resources, for example, at least one symbol, is located in the DRX active period; fig. 6 is a third schematic diagram of the resource and the DRX active period in the embodiment of the present application, and referring to fig. 6, in the time domain, none of the symbols of the resource is located in the DRX active period. In other embodiments of the present application, reference may be made to the descriptions in fig. 4 to fig. 6 for a relationship between a resource and a DRX active period in a time domain, which is not described in detail below.

In the embodiment of the present application, "when …" is used merely to indicate the execution condition of the step, and the execution timing of the step is not limited, and may be also understood as "if" or "if".

In some possible embodiments, the DRX configuration may be configured per (per) traffic, and the DRX active period may be included in the DRX configuration information. Here, the "service" may include, as described above: the present invention provides a method for controlling a sidelink link, a source and a target, a sidelink link, a logical channel, a resource pool, a sidelink service, a MAC PDU, a TB, and the like, which is not limited in this embodiment.

It is assumed that, taking a communication destination identified by the first service as a destination ID as an example, DRX configuration information may be configured for each destination ID. It can be understood that the DRX configuration may be configured by the base station for the UE, may be determined by the TX UE or the RX UE, may be configured by negotiation between the transmitting and receiving UEs, or may be preset in the UE, which is not specifically limited in the embodiment of the present application.

Fig. 7 is a first flowchart of a first communication device side communication method in the embodiment of the present application, and refer to fig. 7. The method comprises the following steps:

S701: sensing (sensing) by the first communication device;

the first communication equipment continuously monitors SCIs sent by other UEs and carries out measurement according to the indication of the SCIs, and a measurement result is obtained. Here, the first communication device demodulates the SCIs of the other UEs after monitoring the SCIs of the other UEs, and the demodulated SCIs at least reflect the usage of the resources on the sidelink.

In the embodiment of the present application, the above-mentioned "measurement" may include measurement of L1 sidelink RSRP based on sidelink DMRS, for example, measurement of RSRP of PSCCH (i.e., PSCCH-RSRP) or psch-RSRP; alternatively, the S-RSSI or the like may also be measured. Wherein PSCCH-RSRP is obtained by measuring DMRS associated with PSCCH, and PSSCH-RSRP is obtained by measuring DMRS associated with PSSCH. Of course, the first communication device may also measure other parameters of the SCI, and this embodiment of the present application is not particularly limited.

S702: the first communication device performs resource exclusion on the resource indicated by the SCI according to the obtained measurement result.

The first communication device excludes the resource whose measurement result satisfies a certain condition from the resources indicated by the SCI, so as to obtain a candidate resource set of the first communication device. For example, through S701, the first communication device measures reference signal received power of an SCI to obtain PSCCH-RSRP or psch-RSRP, and then the first communication device may exclude resources where the PSCCH-RSRP or psch-RSRP meets a preset condition, or the first communication device may exclude resources occupied by other UEs according to an indication of the SCI, and further exclude resources occupied by other UEs and corresponding RSRP higher than a preset threshold.

In practical applications, the preset condition may be that the RSRP value is within a preset range, for example, the RSRP value is 20% before all measured RSRP values are sorted from large to small or from small to large, or the RSRP value is higher than 70% of all RSRP values, and of course, the preset condition may also be other conditions, for example, the preset condition may be set according to the transmission priority of the first communication device and the transmission priority indicated in SCIs of other UEs, and the embodiment of the present application is not particularly limited.

In some possible embodiments, the first communication device may further demodulate the SCI through S701 to obtain a subcarrier spacing configuration of the resource, and the first communication device may further screen the resource according to the subcarrier spacing configuration of the resource, so that the selected subcarrier spacing satisfies the resource required for transmission, so as to be used for subsequent sidelink transmission.

Of course, the first communication device may perform resource exclusion according to other conditions, and the application is not particularly limited.

S703: the first communication equipment determines a first candidate resource and a first service for sidelink transmission;

the first communication device determines a first candidate resource through S702, and obtains a first service currently determinable by itself, where the first service may include a current service and/or a historical service. Here, the "first service" may be as described above, and assuming that, taking the first service as a communication destination identified by a destination ID as an example, the first communication device may determine at least one destination ID as a candidate destination ID set, and the candidate destination ID set may include a destination ID currently selectable by the first communication device and/or a destination ID historically selectable by the first communication device.

S704: the first communication device determines a first resource from the first candidate resources;

since the DRX configuration is configured for the first service, the first communication device may select, from the first candidate resources, a resource intersecting the first active period as a second candidate resource, and determine the first resource from the second selected resource. At this time, the first resource may be understood as a reserved resource.

In this embodiment, the first communication device may determine the first resource from the second candidate resources by the method as described in S303.

In this embodiment of the application, in order to implement that the resource matches the DRX active period of the first service, the first active period may include at least one DRX active period corresponding to the first service, for example, the first active period may be a DRX active period corresponding to one destination ID or DRX active periods corresponding to multiple destination IDs.

It can be understood that, if there are multiple destination IDs, the first active period may be a union of multiple DRX active periods in the DRX configuration corresponding to the multiple destination IDs; then, the first communication device may select a resource that intersects with the union set from the first candidate resources as a second candidate resource, and then the first communication device may further select the first resource from the second candidate resource, for example, the first communication device selects a resource that is partially or completely located in the union set formed by the multiple DRX active periods from the first candidate resource as the second candidate resource, and then selects a time-frequency resource for one transmission opportunity from the second candidate resource according to the number of the selected frequency-domain resources and the remaining PDBs of the available side link data of the logical channel allowed on the carrier, and further may further select a corresponding periodic resource by using the selected time-domain resource to determine a good resource reservation period.

Or, if there is one destination ID, and the first active period may be a plurality of DRX active periods in the DRX configuration corresponding to the destination ID, the first communication device may select, as the second candidate resource, a resource whose intersection with the DRX active period corresponding to the first service in the time domain satisfies the first condition.

In practical applications, the first condition may include: the intersection of the DRX active periods corresponding to the first service in the time domain is the largest, the intersection of the DRX active periods corresponding to the first service in the time domain is within a preset range (may be an empirical value), the intersection of the DRX active periods corresponding to the first service in the time domain is greater than a preset threshold, and the like. For example, if the DRX active period corresponding to one destination ID is subframe 0, the first communication device determines, as the second candidate resource, a resource whose number of symbols at the intersection with subframe 0 is the largest among the first candidate resources, or determines, as the second candidate resource, a resource whose number of symbols at the intersection with subframe 0 is greater than 80% (i.e., 11 symbols) among the first candidate resources, or determines, as the second candidate resource, a resource within symbol 1 to symbol 12 of subframe 0 among the first candidate resources. Similarly, the DRX activation periods corresponding to one destination ID are subframe 0, subframe 3, and subframe 6, and then the first communication device determines, as the second candidate resource, a plurality of resources that have the largest intersection with subframe 0, subframe 3, and subframe 6, respectively, in the first candidate resource, that is, selects resource a that has the largest intersection with subframe 0, resource b that has the largest intersection with subframe 3, and resource c that has the largest intersection with subframe 6, and determines resources a, b, and c as the second candidate resource; or, the first communication device determines, as the second candidate resource, a plurality of resources of the first candidate resource whose symbol number of the intersection with the subframe 0, the subframe 3, and the subframe 6 is greater than 80%, respectively, or determines, as the second candidate resource, a plurality of resources of the first candidate resource located in the symbols 1 to 12 of the subframe 0, the subframe 3, and the subframe 6, respectively. Of course, the first condition may also be other conditions, and the embodiment of the present application is not particularly limited.

At this point, the first communication device completes the resource selection.

S705: the first communication device re-evaluating the first resource;

before performing the traffic transmission, the first communication device may further re-evaluate the first resource to see whether the first resource selected through S703 can be used for the sidelink transmission. For example, since there may be a case where new traffic arrives, the first resource is occupied by other UEs, and the like, the previously selected first resource may not be used for sidelink transmission, and therefore, the first communication device needs to re-evaluate the selected first resource.

S706: if the evaluation result indicates that the first resource cannot be used for sidelink transmission, the first communication device triggers resource reselection, and returns to S702;

s707: if the evaluation result indicates that the first resource can be used for sidelink transmission, the first communication device starts sidelink transmission by using the first resource;

s708: in the process of using the first resource transmission, the first communication equipment judges whether to trigger resource reselection;

in the sidelink transmission process, for some reasons, the first communication device may cause that the first resource cannot be used for sidelink transmission, and therefore, the first communication device needs to evaluate the first resource and determine whether to trigger resource reselection. For example, the reasons may include: configuring or reconfiguring a resource pool at an upper layer; or, no configured sidelink gram; or, there is no new transmission and no retransmission on any resource indicated by the configured sidelink grant by the MAC entity in the past one second; or, the sl-ReselectAfter is configured and the continuous unused transmission opportunity indicated by the configured scaled schedule reaches sl-ReselectAfter; or, the transmission resource indicated by the configured sidelink grant cannot meet the delay requirement of data on a certain logical channel determined according to the priority of the corresponding logical channel, and the MAC entity chooses not to transmit the corresponding single MAC PDU; or the priority of the logical channel indicated by the SCI received by the UE is higher than the priority of the logical channel of the data to be transmitted, a certain SL transmission scheduled by the SCI is expected to overlap with a certain currently reserved resource, and the SL-RSRP measurement result of the SL transmission indicated by the SCI is higher than the threshold. When the first resource satisfies any of the conditions described above, the reserved resources (if any) associated with the SL process are cleared and TX resource selection/reselection is triggered.

S709: if the resource reselection is triggered, the first communication device returns to S702;

s710: and if the resource reselection is not triggered, the first communication equipment continues to use the first resource for side link transmission.

In some possible embodiments, the first resource selected by the first communication device in S703 to S704 may also be used as a candidate resource for the first communication device to select a reserved resource from the candidate resource, and then S705 to S710 are performed.

In this embodiment of the present application, through the methods in S701 to S710 described above, the first communication device selects a resource that intersects with a DRX active period corresponding to the first service as a reserved resource, and performs sidelink transmission using the reserved resource, so that it can be ensured that the first communication device can receive a transmission from a second communication device (e.g., a TX UE) in the active period, power consumption of the RX UE is saved, and sidelink transmission between the first communication device and the second communication device is ensured.

In some possible embodiments, in order to improve the matching degree of the reserved resource and the DRX active period of the first service, if in a scenario where there are multiple destination IDs, the first communication device may further select the first service, that is, the destination ID, before performing S707 to start side link transmission using the first resource, at this time, the first communication device may select, from the multiple destination IDs, a destination ID (for identifying the second service) whose corresponding DRX active period is temporally intersected with the first resource, that is, a DRX active period corresponding to the last selected destination ID is temporally intersected with the reserved resource.

In some possible embodiments, before executing S706, the first communication device may further perform selection of the destination ID by using the above method, so that the selected destination ID may intersect with the reserved resource in the time domain.

In some possible embodiments, in order to improve the matching degree of the reserved resources and the DRX active period of the first service, when the first communication device performs S701, first, the MAC layer of the first communication device may determine a union of the at least one DRX configuration in the time domain, that is, the first active period, and indicate to the physical layer, where the at least one DRX configuration may be part or all of the DRX configurations that the first communication device can determine, for example, the at least one DRX configuration may include the DRX configuration of the first service. Then, the physical layer performs sending, demodulates SCIs of other UEs, and performs measurement during the first active period. For example, measuring PSCCH-RSRP or PSSCH-RSRP; alternatively, the S-RSSI is measured. Wherein PSCCH-RSRP is determined for PSCCH associated DMRS measurements and PSSCH-RSRP is determined for PSSCH associated DMRS measurements. Of course, the first communication device may also measure other parameters of the resource indicated by the SCI, and this embodiment of the present application is not particularly limited.

It is to be understood that the first communication device listens for the SCI during the first active period, and then the SCI is located during the first active period, and then the first communication device measures the SCI, which may also be considered as measuring during the first active period.

In some possible embodiments, in order to improve the matching degree of the reserved resource and the DRX active period of the first service, when the first communication device performs S702 to perform resource exclusion on the candidate resource, the MAC layer of the first communication device first indicates to the physical layer a union of DRX active periods corresponding to the first service and/or a union of DRX active periods corresponding to a current service in the first service and a non-periodic service in historical services, and then the physical layer excludes the resource from the second resource, and determines a resource intersecting with the union as the first candidate resource, it may be understood that the first candidate resource needs to satisfy at least one of the following conditions: intersection exists between the time domain and the union set of the DRX activation periods corresponding to the first service; and an intersection exists between the current service in the first service and the union of the DRX activation periods corresponding to the non-periodic service in the historical service in the time domain.

In some possible embodiments, the physical layer may further perform the method described in S702 above from the first candidate resource to further exclude the resource, so as to determine the candidate resource and further determine the first resource, which is not specifically limited in the embodiments of the present application.

It should be noted that the second resource may be a resource corresponding to the resource determined by the physical layer through sending in the selection window, or may be a resource left after the physical layer performs S702 to perform resource exclusion from the resource selection determined by sending.

In other embodiments of the present application, fig. 8 is a second flowchart of a first communication device side communication method in the embodiments of the present application, and refer to fig. 8. The method comprises the following steps:

s801: the first communication device determines a second activation period;

s802: the first communication equipment monitors SCIs sent by other UEs in a second activation period;

here, SCI is used to indicate the resources used by other UEs for sidelink transmission.

In some possible embodiments, first, the first communication device determines a union of the DRX active periods in the time domain in the at least one DRX configuration, that is, the second active period, where the at least one DRX configuration may be a part or all of the DRX configurations that the first communication device can determine, for example, the at least one DRX configuration may include a DRX configuration of the first traffic.

Further, after S802, the first communication device may perform measurements during a second active period according to the SCI, i.e., measurements on the SCI. For example, measuring PSCCH-RSRP or PSSCH-RSRP; alternatively, the S-RSSI is measured. Wherein PSCCH-RSRP is determined for PSCCH associated DMRS measurements and PSSCH-RSRP is determined for PSSCH associated DMRS measurements. Of course, the first communication device may also measure other parameters of the SCI, and this embodiment of the present application is not particularly limited.

It is to be understood that the first communication device listens for the SCI during the second active period, and then the SCI is located during the second active period, and then the first communication device measures the SCI, which may also be considered as measuring during the second active period.

To this end, the first communication device completes sending during the second activation period.

S803: and the first communication equipment excludes the resources indicated by the SCI according to the obtained measurement result, and determines a first candidate resource.

The first communication device excludes the resource whose measurement result satisfies a certain condition from the resources indicated by the SCI, so as to obtain a candidate resource set of the first communication device. For example, through S801, the first communication device measures reference signal received power of an SCI, determines PSCCH-RSRP or PSCCH-RSRP, and then the first communication device may exclude resources where the PSCCH-RSRP or PSCCH-RSRP meets a preset condition, or the first communication device may exclude resources occupied by other UEs according to an indication of the SCI, and further, may exclude resources occupied by other UEs and resources where the RSRP is higher than a preset threshold.

In practical application, the preset condition may be that the RSRP value is within a preset range, for example, the RSRP value is 20% before all measured RSRP values are sorted from large to small or from small to large, or the RSRP value is higher than 70% of all RSRP values, of course, the preset condition may also be other conditions, and may be set according to the transmission priority of the first communication device and the transmission priority indicated in the SCIs of other UEs, which is not specifically limited in the embodiment of the present application.

In some possible embodiments, the first communication device may further demodulate the SCI through S801 to determine the subcarrier spacing configuration of the resource, and the first communication device may further screen the resource according to the subcarrier spacing configuration of the resource, so that the selected subcarrier spacing satisfies the resource required for transmission, so as to be used for subsequent sidelink transmission.

Of course, the first communication device may perform resource exclusion according to other conditions, and the application is not particularly limited.

S804: the first communication device selects a first resource for sidelink transmission from the first candidate resources;

after the first service arrives, the first communication device may select reserved resources for the first service from the first candidate resources, that is, the first resources.

In this embodiment, the first service may include: the present invention provides a method for controlling a sidelink link, a source and a target, a sidelink link, a logical channel, a resource pool, a sidelink service, a MAC PDU, a TB, and the like, which is not limited in this embodiment.

S805: the first communication device re-evaluating the first resource;

before performing the traffic transmission, the first communication device may further re-evaluate the first resource to see whether the first resource selected through S803 can be used for the sidelink transmission. For example, since there may be a case where new traffic arrives, the first resource is occupied by other UEs, and the like, the previously selected first resource may not be used for sidelink transmission, and therefore, the first communication device needs to re-evaluate the selected first resource.

S806: if the evaluation result indicates that the first resource cannot be used for sidelink transmission, the first communication device triggers resource reselection, and returns to S802;

s807: if the evaluation result indicates that the first resource can be used for sidelink transmission, the first communication device starts sidelink transmission by using the first resource;

s808: in the process of using the first resource transmission, the first communication equipment judges whether to trigger resource reselection;

In the sidelink transmission process, for some reasons, the first communication device may cause that the first resource cannot be used for sidelink transmission, and therefore, the first communication device needs to evaluate the first resource and determine whether to trigger resource reselection. For example, the reasons may include: configuring or reconfiguring a resource pool at an upper layer; or, no configured sidelink gram; or, there is no new transmission and no retransmission on any resource indicated by the configured sidelink grant by the MAC entity in the past one second; or, the sl-ReselectAfter is configured and the continuous unused transmission opportunity indicated by the configured scaled schedule reaches sl-ReselectAfter; or, the transmission resource indicated by the configured sidelink grant cannot meet the delay requirement of data on a certain logical channel determined according to the priority of the corresponding logical channel, and the MAC entity chooses not to transmit the corresponding single MAC PDU; or the priority of the logical channel indicated by the SCI received by the UE is higher than the priority of the logical channel of the data to be transmitted, a certain SL transmission scheduled by the SCI is expected to overlap with a certain currently reserved resource, and the SL-RSRP measurement result of the SL transmission indicated by the SCI is higher than the threshold. When the first resource satisfies any of the conditions described above, the reserved resource (if any) associated with the SL process is cleared and first communication device resource selection/reselection is triggered.

S809: if the resource reselection is triggered, the first communication device returns to S802;

s810: and if the resource reselection is not triggered, the first communication equipment continues to use the first resource for side link transmission.

In this embodiment of the present application, by the methods shown in the foregoing S801 to S810, the first communication device selects a resource where the DRX active periods corresponding to the first traffic intersect (i.e., the second active period) as a reserved resource, and performs sidelink transmission using the reserved resource, so that it can be ensured that the first communication device can receive a transmission from a second communication device (e.g., a TX UE) in the active period, power consumption of the RX UE is saved, and sidelink transmission between the first communication device and the second communication device is ensured.

In some possible embodiments, in order to improve the matching degree of the reserved resources and the DRX active period of the first service, after S803, the first communication device may further determine a first candidate resource for sidelink transmission and the first service; the first communication device determines a first resource from the first candidate resources.

After the first communication device determines the first candidate resource through S803, the first communication device may further obtain a first service that is currently determinable by itself. Since the DRX configuration is configured for the first service, the first communication device may select, from the first candidate resources, a resource intersecting the second active period as a second candidate resource, and determine the first resource from the second selected resource. At this time, the first resource may be understood as a reserved resource. Here, the first service may include a current service and/or a historical service, and the "first service" is as described above, and it is assumed that, taking the first service as a communication destination identified by a destination ID as an example, the first communication device may determine at least one destination ID as a candidate destination ID set, where the candidate destination ID set may include a currently selectable destination ID and/or a historically selectable destination ID of the first communication device.

In this embodiment of the application, in order to implement that the resource matches the DRX active period of the first service, the second active period may be an active period corresponding to one destination ID or an active period corresponding to multiple destination IDs.

Then, if there are multiple destination IDs, the second active period may be a union of multiple DRX active periods in the DRX configuration corresponding to the multiple destination IDs; then, the first communication device may select a resource that intersects with the union set from the first candidate resources as a second candidate resource, and then the first communication device may further select the first resource from the second candidate resource, for example, the first communication device selects a resource that is partially or completely located in the union set formed by the multiple DRX active periods from the first candidate resource as the second candidate resource, and then selects a time-frequency resource for one transmission opportunity from the second candidate resource according to the number of the selected frequency-domain resources and the remaining PDBs of the available side link data of the logical channel allowed on the carrier, and further may further select a corresponding periodic resource by using the selected time-domain resource to determine a good resource reservation period.

Or, if there is one destination ID and the second active period may be multiple DRX active periods in the DRX configuration corresponding to the destination ID, the first communication device may select, as the second candidate resource, a resource whose intersection with the DRX active period corresponding to the first service in the time domain satisfies the first condition.

In practical applications, the first condition may include: one or more of the maximum intersection of the DRX active periods corresponding to the first service in the time domain, the preset range of the intersection of the DRX active periods corresponding to the first service in the time domain, the preset threshold of the intersection of the DRX active periods corresponding to the first service in the time domain, and the like. For example, if the DRX active period corresponding to one destination ID is subframe 0, the first communication device determines, as the second candidate resource, a resource whose number of symbols at the intersection with subframe 0 is the largest among the first candidate resources, or determines, as the second candidate resource, a resource whose number of symbols at the intersection with subframe 0 is greater than 80% (i.e., 11 symbols) among the first candidate resources, and further determines, as the second candidate resource, a resource within symbol 1 to symbol 12 of subframe 0 among the first candidate resources. Similarly, if the DRX active period for one destination ID pair is subframe 0, subframe 3, and subframe 6, the first communication device determines, as the second candidate resource, a plurality of resources of the first candidate resource whose intersections with the subframe 0, subframe 3, and subframe 6, respectively, are the largest, or determines, as the second candidate resource, a plurality of resources of the first candidate resource whose number of symbols at the intersections with the subframe 0, subframe 3, and subframe 6, respectively, is greater than 80% (i.e., 11 symbols), and further determines, as the second candidate resource, a plurality of resources of the first candidate resource located within symbol 1 to symbol 12 of the subframe 0, subframe 3, and subframe 6, respectively. Of course, the first condition may also be other conditions, and the embodiment of the present application is not particularly limited.

In some possible embodiments, the first resource selected by the first communication device in S804 may also be used as a candidate resource for the first communication device to select a reserved resource from the candidate resource, and then S805 to S810 are performed.

In some possible embodiments, in order to improve the matching degree of the reserved resource and the DRX active period of the first service, in a scenario where a plurality of destination IDs exist, before performing S807 to start side link transmission using the first resource, the first communication device may further select the first service, that is, the destination ID, and at this time, the first communication device may select, from the plurality of destination IDs, a destination ID (for identifying the second service) whose corresponding DRX active period is temporally intersected with the first resource, that is, a DRX active period corresponding to the last selected destination ID is temporally intersected with the reserved resource.

In some possible embodiments, in order to improve the matching degree of the reserved resource and the DRX active period of the first service, when the first communication device performs S803 to perform resource exclusion on the candidate resource, the MAC layer of the first communication device first indicates to the physical layer a union of the DRX active periods corresponding to the first service and/or a union of the DRX active periods corresponding to the current service in the first service and the non-periodic service in the historical service, and then the physical layer performs resource exclusion from the second resource, and determines a resource intersecting with the union as a third candidate resource, that is, the third candidate resource needs to satisfy at least one of the following conditions: intersection exists between the time domain and the union set of the DRX activation periods corresponding to the first service; and an intersection exists between the current service in the first service and the union of the DRX activation periods corresponding to the non-periodic service in the historical service in the time domain. The third candidate resource may be used as the first candidate resource, and of course, the physical layer may further perform the method described in S803 from the third candidate resource to determine the first candidate resource, which is not specifically limited in the embodiment of the present application.

In this application, the second resource may be a resource corresponding to the resource determined by the physical layer through sending in the selection window, or may be a resource left after the physical layer performs S702 to perform resource exclusion from the resource selection determined by sending.

In other embodiments of the present application, fig. 9 is a third flowchart of a first communication device side communication method in an embodiment of the present application, and refer to fig. 9. The method comprises the following steps:

s901: sensing (sensing) by the first communication device;

the first communication equipment continuously monitors SCIs sent by other UEs, measures resources indicated by the SCIs according to the indications of the SCIs, and determines measurement results. Here, the first communication device demodulates the SCIs of the other UEs after monitoring the SCIs of the other UEs, and the demodulated SCIs at least reflect the usage of the resources on the sidelink.

In the embodiment of the present application, the above-mentioned "measurement" may include measurement of sidelink RSRP based on sidelink DMRS, for example, measurement of RSRP of PSCCH (i.e., PSCCH-RSRP) or psch-RSRP; alternatively, the S-RSSI or the like may also be measured. Wherein PSCCH-RSRP is determined for PSCCH associated DMRS measurements and PSSCH-RSRP is determined for PSSCH associated DMRS measurements. Of course, the first communication device may also measure other parameters of the resource indicated by the SCI, and this embodiment of the present application is not particularly limited.

S902: the first communication device determines a fourth resource;

in this embodiment, the fourth resource may be a resource in the selection window, or may be a resource left after resource exclusion is performed on the resource in the selection window.

S903: the first communication device determines a third candidate resource from the fourth resource;

here, the third candidate resource needs to satisfy at least one of the following conditions: intersection exists between the time domain and the union set of the DRX activation periods corresponding to the first service; intersection exists between the time domain and the union set of DRX activation periods corresponding to the current service in the first service and the non-periodic service in the historical service;

after S901 is performed by the first communication device, the MAC layer of the first communication device first indicates to the physical layer a union of DRX active periods corresponding to the first service and/or a union of DRX active periods corresponding to a current service in the first service and a non-periodic service in historical services, that is, the first active period, and then the physical layer performs resource exclusion from a fourth resource, and determines a resource intersecting the union as a third candidate resource, that is, the third candidate resource needs to satisfy at least one of the following conditions: intersection exists between the time domain and the union set of the DRX activation periods corresponding to the first service; and an intersection exists between the current service in the first service and the union of the DRX activation periods corresponding to the non-periodic service in the historical service in the time domain. Then the third candidate resource may be used to determine a fifth resource.

Of course, the physical layer may further exclude resources from the third candidate resources, for example, the first communication device excludes resources whose measurement result satisfies a certain condition from the third candidate resources, determines the remaining resources as candidate resources of the first communication device, and further the first communication device may determine a fifth resource from the candidate resources for transmission when transmitting the first service. For example, through S902, the first communication device measures reference signal received power of an SCI, determines PSCCH-RSRP or PSCCH-RSRP, and then may exclude resources that the PSCCH-RSRP or PSCCH-RSRP satisfies a preset condition, or may exclude resources occupied by other UEs according to an indication of the SCI, and further exclude resources that the other UEs occupy and corresponding RSRP is higher than a preset threshold.

In some possible embodiments, the first communication device may further demodulate the SCI through S901 to determine the subcarrier spacing configuration of the resource, and the first communication device may further screen the resource according to the subcarrier spacing configuration of the resource, so that the selected subcarrier spacing satisfies the resource required for transmission, so as to be used for subsequent sidelink transmission.

Of course, the first communication device may perform resource exclusion according to other conditions, and the application is not particularly limited.

S904: the first communication device selects a fifth resource for sidelink transmission from the third candidate resources;

after the arrival of the first service, the first communication device may select a reserved resource for the first service, i.e. a fifth resource, from the third set of candidate resources.

In this embodiment, the first service may include: the present invention is not limited in this embodiment to any specific combination of one or more of a communication target, a sidelink link, a source and target pair, a sidelink link, an LCH, a resource pool, a sidelink service, a MAC PDU, and a TB.

S905: the first communication device reevaluates the fifth resource;

before performing the traffic transmission, the first communications device re-evaluates the fifth resource to see whether the fifth resource selected in S903 can be used for the sidelink transmission, so as to ensure that the finally selected resource is available for the sidelink transmission.

S906: if the evaluation result indicates that the fifth resource cannot be used for sidelink transmission, the first communication device triggers resource reselection, and returns to S902;

s907: if the evaluation result indicates that the fifth resource can be used for sidelink transmission, the first communication device starts sidelink transmission by using the fifth resource;

s908: in the process of using the fifth resource transmission, the first communication device continuously judges whether to trigger resource reselection;

in S905 and S908, during the sidelink transmission process, the first communication device may cause that the first resource cannot be used for sidelink transmission for some reasons, and therefore, the first communication device further needs to evaluate the first resource to determine whether to trigger resource reselection. For example, the reasons may include: configuring or reconfiguring a resource pool at an upper layer; or, no configured sidelink gram; or, there is no new transmission and no retransmission on any resource indicated by the configured sidelink grant by the MAC entity in the past one second; or, the sl-ReselectAfter is configured and the continuous unused transmission opportunity indicated by the configured scaled schedule reaches sl-ReselectAfter; or, the transmission resource indicated by the configured sidelink grant cannot meet the delay requirement of data on a certain logical channel determined according to the priority of the corresponding logical channel, and the MAC entity chooses not to transmit the corresponding single MAC PDU; or the priority of the logical channel indicated by the SCI received by the UE is higher than the priority of the logical channel of the data to be transmitted, a certain SL transmission scheduled by the SCI is expected to overlap with a certain currently reserved resource, and the SL-RSRP measurement result of the SL transmission indicated by the SCI is higher than the threshold. When the first resource satisfies any of the conditions described above, the reserved resource (if any) associated with the SL process is cleared and first communication device resource selection/reselection is triggered.

S909: if the resource reselection is triggered, the first communication device returns to S902;

s910: and if the resource reselection is not triggered, the first communication equipment continues to use the fifth resource for side link transmission.

In this embodiment of the present application, by the method shown in the foregoing S901 to S910, the first communication device selects a resource that intersects with a DRX active period corresponding to the first service as a reserved resource, and performs sidelink transmission using the reserved resource, so that it can be ensured that the first communication device can receive a transmission from a second communication device (e.g., a TX UE) in the active period, power consumption of the RX UE is saved, and sidelink transmission between the first communication device and the second communication device is ensured.

In some possible embodiments, in order to improve the matching degree of the reserved resources and the DRX active period of the first service, when performing S901, the first communication device first determines the union of the DRX active periods in the at least one DRX configuration in the time domain, that is, the first active period, where the at least one DRX configuration may be some or all DRX configurations that the first communication device can determine, for example, the at least one DRX configuration may include the DRX configuration of the first service. The first communication device then transmits, demodulates and measures the SCIs of the other UEs during the first active period. For example, measuring PSCCH-RSRP or PSSCH-RSRP; alternatively, the S-RSSI is measured. Wherein PSCCH-RSRP is determined for PSCCH associated DMRS measurements and PSSCH-RSRP is determined for PSSCH associated DMRS measurements. Of course, the first communication device may also measure other parameters of the resource indicated by the SCI, and this embodiment of the present application is not particularly limited.

In this embodiment of the present application, after determining the first activation period, the MAC layer of the first communication device indicates the first activation period to the physical layer of the first communication device, and the physical layer monitors SCIs sent by other UEs in the first activation period, and then the physical layer performs measurement in the first activation period.

In some possible embodiments, to improve the matching degree of the reserved resource and the DRX active period of the first service, after S903, the first communication device may further determine a third candidate resource for sidelink transmission and the first service; the first communication device determines a fifth resource from the third candidate resources.

After the first communication device determines the third candidate resource through S903, the first communication device may further obtain a currently determinable first service. Since the DRX configuration is configured for the first traffic, the first communication device may select a resource that intersects with the first active period as a fifth resource from the third candidate resources. At this time, the fifth resource may be a reserved resource. Here, the first service may include a current service and/or a historical service, and the "first service" is as described above, and it is assumed that, taking the first service as a communication destination identified by a destination ID as an example, the first communication device may determine at least one destination ID as a candidate destination ID set, where the candidate destination ID set may include a currently selectable destination ID and/or a historically selectable destination ID of the first communication device.

In this embodiment of the present application, in order to implement that a resource matches a DRX active period of a first service, the first active period may be an active period corresponding to one destination ID or a union of active periods corresponding to multiple destination IDs.

Then, if there are multiple destination IDs, the first active period may be a union of multiple DRX active periods in the DRX configuration corresponding to the multiple destination IDs; then, the first communication device may select a resource that intersects with the union set from the third candidate resources as a fourth candidate resource, and then the first communication device may further select a fifth resource from the fourth candidate resources, for example, the first communication device selects a resource that is partially or completely located in the union set formed by the multiple DRX active periods from the third candidate resources as the fourth candidate resource, and then selects a time-frequency resource for one transmission opportunity from the fourth candidate resource according to the number of the selected frequency-domain resources and the remaining PDBs of the available side link data of the logical channel allowed on the carrier, and further may further select a corresponding periodic resource by using the selected time-domain resource to determine a good resource reservation period.

Alternatively, if there is one destination ID and the first active period may be a plurality of DRX active periods in the DRX configuration corresponding to the destination ID, the first communication device may select, as the fourth candidate resource, a resource whose intersection with the DRX active period corresponding to the first service in the time domain satisfies the first condition.

In practical applications, the first condition may include one or more of the following: the intersection of the DRX active periods corresponding to the first service in the time domain is the largest, the intersection of the DRX active periods corresponding to the first service in the time domain is within a preset range, the intersection of the DRX active periods corresponding to the first service in the time domain is greater than a preset threshold, and the like.

In some possible embodiments, the fifth resource selected by the first communication device in S904 may also be used as a candidate resource for the first communication device to select a reserved resource from the candidate resources, and then S905 to S910 are performed.

In some possible embodiments, in order to improve the matching degree of the reserved resource and the DRX active period of the first service, in a scenario of multiple destination IDs, the first communication device may further select a destination ID before performing S907 to start side link transmission using the fifth resource, and at this time, the first communication device may select, from the multiple destination IDs, a destination ID (for identifying the second service) whose corresponding DRX active period and the fifth resource intersect with each other in the time domain, that is, a DRX active period corresponding to the last selected destination ID and the reserved resource intersect with each other in the time domain.

In this embodiment, in one or more of the above embodiments, the first communication device may continuously evaluate the third resource (i.e., the reserved resource selected by the first communication device), and if the first communication device determines that the third resource does not intersect with the DRX active period corresponding to the current traffic (third traffic or fourth traffic) of the first communication device, that is, the third resource is located outside the DRX active period corresponding to the current traffic in the time domain, the first communication device triggers resource reselection to reselect the resource that intersects with the DRX active period of the second current traffic.

It should be noted that the current service is a service when the first communication device evaluates the third resource, and may be the same as the first service or different from the first service. For example, the third service may include: the present invention provides a method for controlling a sidelink link, a source and a target, a sidelink link, a logical channel, a resource pool, a sidelink service, a MAC PDU, a TB, and the like, which is not limited in this embodiment. The fourth service may include: the method can comprise the following steps: the present invention provides a method for controlling a sidelink link, a source and a target, a sidelink link, a logical channel, a resource pool, a sidelink service, a MAC PDU, a TB, and the like, which is not limited in this embodiment.

In the process of performing sidelink transmission, due to a change in a service, for example, a new service arrives, a current resource pool changes, a current resource is reconfigured, and the like, the third resource cannot be used for sidelink transmission, for example, the third resource does not meet a delay requirement of the first service, and at this time, the first communication device may trigger resource reselection. Further, the first communication device may also consider the relation between the third resource and the DRX active period of the current service to decide whether to trigger the resource reselection.

For example, fig. 10 is a schematic diagram of a DRX active period corresponding to a resource and a current service in the embodiment of the present application, referring to fig. 10, where the current service arrives at time t1, and a time difference between start times t2 and t1 of a third resource meets a delay requirement of the current service, but since the third resource is located outside the DRX active period corresponding to the current service, that is, there is no intersection between the third resource and the DRX active period corresponding to the current service, at this time, the first communications device triggers resource reselection.

In some possible embodiments, the absence of intersection between the third resource and the DRX active period corresponding to the current traffic of the first communication device may include: the third resource does not have an intersection with the union set of the plurality of DRX activation periods corresponding to the current service; or the third resource does not intersect with at least one DRX activation period in the plurality of DRX activation periods corresponding to the current service; or, the third resource does not intersect with DRX active periods satisfying the preset number among the DRX active periods corresponding to the current service. It may be understood that DRX active periods, which do not intersect with the third resource, in the multiple DRX active periods corresponding to the current service reach a preset number (which may be an empirical value), or within a preset number range (which may be an empirical value), the first communication device determines that there is no intersection between the third resource and DRX active periods, which meet the preset number, in the multiple DRX active periods corresponding to the current service.

In some possible embodiments, the first communication device may further configure a cycle for the first resource, and then the first communication device may configure a DRX cycle (i.e., DRX cycle) satisfying the second condition in the DRX configuration corresponding to the first service as the cycle corresponding to the first resource.

Here, the second condition may include: the minimum value of the DRX cycle in the DRX configuration corresponding to the first service, the DRX cycle in the DRX configuration corresponding to the first service being smaller than the preset threshold, the DRX cycle in the DRX configuration corresponding to the first service being smaller than 20%, and the like.

It should be noted that the first communication device selects the first resource for the first resource configuration period and the first communication device without an execution sequence, and the first resource configuration period and the first resource selection may be executed sequentially or simultaneously. When the two are executed successively, the first communication device may first select the first resource for the first resource configuration period and then select the first resource, or may first select the first resource and then select the first resource for the first resource configuration period. The embodiment of the present application is not particularly limited to the execution timing when the first communication device selects the first resource for the first resource configuration period and the first communication device.

In the embodiment of the present application, the period of the first resource is selected as the minimum value of the periods of all DRX configurations corresponding to the first service, so that the period in which the first communication device wakes up to monitor the SCI is matched with the period in which the first service is sent, thereby improving the probability that the sidelink resource is effectively utilized.

The embodiment of the present application further provides a communication method, which may be applied to the communication system, where the first communication device may be TX UE or RX UE, and correspondingly, the second communication device may be RX UE or TX UE.

Fig. 11 is a flowchart illustrating a communication method in an embodiment of the present application, and referring to fig. 11, the method may include:

s1101: the first communication device determines that the first resource pool or resources in the first resource pool meet a third condition;

here, the first resource pool is a resource pool in which the first communication device currently performs resource selection;

in some possible embodiments, the third condition comprises: the channel congestion rate (CBR) of the current resource pool satisfies a fourth condition, for example, the fourth condition may be that the CBR is greater than a preset value (may be an empirical value) or is within a preset range, the first communication device triggers the resource pool to reselect, and/or the packet loss rate satisfies a fifth condition, for example, the fifth condition may be that the packet loss rate is greater than a preset value (may be an empirical value), or the packet loss rate is within a preset range, and the like.

In the embodiment of the present application, the third condition is not limited to the above cases, and is not particularly limited thereto.

S1102: the first communication equipment carries out DRX configuration;

the first communication device performs S1102, after performing S1101, to enable the first communication device to select a resource pool that can be used for side link transmission.

S1103: the first communication device instructs the second communication device to perform DRX configuration.

In some possible embodiments, the above-mentioned "DRX configuration" may also be understood as enabling (enabled) or disabling (disabled) DRX functionality, i.e. the first communication device may instruct the second communication device to configure DRX functionality or to cancel DRX functionality. Further, if the first communication device indicates the second communication device to configure the DRX function, the first communication device may send DRX configuration information to the second communication device at the same time, or the second communication device configures the DRX configuration information by itself, and of course, the second communication device may also determine the DRX configuration information in other manners, which is not limited in this embodiment of the application.

In other embodiments of the present application, after performing S1101, the first communication device may further perform S1103 to instruct the second communication device to select a resource pool that can be used for sidelink transmission.

In some possible embodiments, S1103 may include: the first indication message is used for informing the second communication device that the current resource pool of the first communication device or the resources in the current resource pool meet a third condition; or the first communication device sends a second indication message to the second communication device, wherein the second indication message is used for indicating the second communication device to perform DRX configuration; and/or the first communication equipment sends a third indication message to the second communication equipment, wherein the third indication message is used for indicating the DRX configuration information.

In practical applications, the DRX configuration information may include part or all of the sidelink DRX parameters. Optionally, the DRX parameters may include one or more of the following parameters: an SL DRX duration timer (DRX-onDurationTimerSL), an SL DRX slot compensation (DRX-SlotOffsetSL), an SL DRX inactivity timer (DRX-InactivityTimerSL), an SL DRX retransmission timer (DRX-retransfistimerssl), an SL DRX long cycle start compensation (DRX-longcyclestartoffssl), an SL DRX long cycle (DRX-LongCycleSL), an SL DRX short cycle (DRX-ShortCycleSL), an SL DRX short cycle timer (DRX-shortcyclersl), or an SL DRX HARQ round trip delay (round trip time, RTT) timer (DRX-HARQ-RTT-rsl). Here, it is understood that the "timer" mentioned in the above parameters actually means the length of the timer.

In other embodiments of the present application, if the first communication device is a TX UE, before S1101, the first communication device may further receive a fourth indication message from the second communication device (RX UE), where the fourth indication message is used to indicate that the packet loss rate of the second communication device or the packet loss rate satisfies a fifth condition, for example, the fifth condition may be that the packet loss rate is greater than a preset value (may be an empirical value), or the packet loss rate is within a preset range. Of course, the fifth condition may also be other conditions, and the embodiment of the present application is not particularly limited.

In some possible embodiments, the second communication device may further send, to the first communication device, fourth indication information when the packet loss rate satisfies a fifth condition and reaches a fourth threshold, where, for example, the packet loss rate satisfies the fifth condition for 3 times, 5 times, or 10 times, and at this time, the fourth indication information may be used to indicate the latest packet loss rate or the latest packet loss rate satisfies the fifth condition. In practical application, the triggering condition for the second communication device to send the fourth indication information may also be other conditions, and the embodiment of the present application is not specifically limited.

In some possible embodiments, the determining module 1201 is configured to determine a first candidate resource and a first service for sidelink transmission; and determining a first resource from the first candidate resource, wherein the first resource and a first active period have intersection in a time domain, and the first active period is determined according to a DRX active period corresponding to the first service.

In some possible embodiments, the determining module 1201 is configured to determine, as the second candidate resource, a resource that intersects with the first activation period in a time domain in the first candidate resource; a first resource is determined from the second candidate resources.

In some possible embodiments, the determining module 1201 is further configured to determine, as the second candidate resource, a resource included in the first active period in the time domain from among the first candidate resources.

In some possible embodiments, the apparatus may further include: and the selection module is used for selecting a second service, and the DRX activation period corresponding to the second service and the first resource have intersection on a time domain.

In some possible embodiments, the triggering module 1202 is configured to trigger the resource reselection if there is no intersection between the first resource and a DRX activation period corresponding to a third service of the first communication device.

In some possible embodiments, the determining module 1201 is further configured to determine, as the first cycle, a DRX cycle in the DRX configuration corresponding to the first service, where the DRX cycle satisfies the second condition, where the first cycle is a cycle corresponding to the first resource.

In some possible embodiments, the determining module 1201 is further configured to determine a first activation period before determining the first candidate resource for sidelink transmission; a monitoring module 1203 is configured to monitor SCI in the first active period, where the SCI is used to indicate resources used by other communication devices for sidelink transmission.

Optionally, the apparatus may further include: and the measurement module is used for measuring in the first activation period according to the SCI.

In some possible embodiments, the determining module 1202 is specifically configured to determine a second resource for sidelink transmission; determining a first candidate resource from the second resources, wherein the first candidate resource meets at least one of the following conditions: intersection exists between the time domain and the union set of DRX activation periods corresponding to first services, wherein the first services comprise current services and/or historical services; and an intersection exists between the current service and the union set of the DRX activation periods corresponding to the non-periodic service in the historical service in the time domain.

In some possible embodiments, the absence of intersection of the third resource with the DRX active periods corresponding to the first traffic includes: the intersection does not exist between the third resource and the multiple union sets of the DRX activation periods corresponding to the fourth service; or the third resource does not intersect with at least one DRX active period in a plurality of DRX active periods corresponding to the fourth service; or, there is no intersection between the third resource and the DRX active periods satisfying the preset number in the multiple DRX active periods corresponding to the fourth service.

In some possible embodiments, the DRX active period corresponding to the first traffic includes at least one of: a DRX active period corresponding to a communication target, a DRX active period corresponding to a side link connection, a DRX active period corresponding to a source and target pair, a DRX active period corresponding to a side link connection, a DRX active period corresponding to a logical channel, a DRX active period corresponding to a resource pool, a DRX active period corresponding to a side link service, a DRX active period corresponding to a media access control layer protocol data unit (MAC PDU), and a DRX active period corresponding to a transport block TB.

Based on the same inventive concept, the present application provides a communication apparatus, which may be a chip or a system on a chip in a first communication device, and may also be a functional module in the first communication device for implementing the method according to any of the foregoing embodiments. The chip or system on chip includes a memory having stored therein instructions that, when called by the system on chip or chip, perform the above-described method. Still referring to fig. 12, the determining module 1201 is further configured to determine a second active period, where the second active period is a union of DRX active periods in at least one DRX configuration in a time domain; a monitoring module 1203, further configured to monitor sidelink control information SCI in a second active period, where the SCI is used to indicate a resource used by other communication devices for sidelink transmission;

Further, the above apparatus may further include: and the measurement module is used for measuring in the second activation period according to the SCI.

In some possible embodiments, the at least one DRX configuration includes a DRX configuration of the first traffic.

Based on the same inventive concept, the present application provides a communication apparatus, which may be a chip or a system on a chip in a first communication device, and may also be a functional module in the first communication device for implementing the method according to any of the foregoing embodiments. The chip or system on chip includes a memory having stored therein instructions that, when called by the system on chip or chip, perform the above-described method. Still referring to fig. 12, a determining module 1201 is configured to determine a fourth resource for sidelink transmission; determining a third candidate resource from the fourth resources, wherein the third candidate resource meets at least one of the following conditions: intersection exists between the time domain and the union set of DRX activation periods corresponding to first services, wherein the first services comprise current services and/or historical services; intersection exists between the time domain and the union set of DRX activation periods corresponding to the current service and the non-periodic service in the historical service; wherein the third candidate resource is used to determine a fifth resource for sidelink transmission.

Based on the same inventive concept, the present application provides a communication apparatus, which may be a chip or a system on a chip in a first communication device, and may also be a functional module in the first communication device for implementing the method according to any of the foregoing embodiments. The chip or system on chip includes a memory having stored therein instructions that, when called by the system on chip or chip, perform the above-described method. Still referring to fig. 12, a determining module 1201, configured to determine that the first resource pool or resources in the first resource pool meet a third condition, where the first resource pool is a resource pool for the first communication device to currently perform resource selection; a configuration module 1204, configured to perform DRX discontinuous reception configuration, and/or an indication module 1205, configured to indicate the second communication device to perform DRX configuration, and perform sidelink communication between the first communication device and the second communication device.

In some possible embodiments, the third condition includes at least one of: the channel congestion rate CBR of the current resource pool meets a fourth condition; the number of times that the CRB meets the fourth condition reaches a first threshold; triggering the resource pool reselection by the first communication equipment; the frequency of triggering the resource pool reselection by the first communication equipment reaches a second threshold value; the number of times that the packet loss rate of the second communication device satisfies the fifth condition or the packet loss rate of the second communication device satisfies the fifth condition reaches a third threshold.

In some possible embodiments, the fourth condition comprises: the CBR is larger than a first preset value, or the CBR is positioned in a first preset interval; and/or, the fifth condition comprises: the packet loss rate is greater than a second preset value, or the packet loss rate is within a second preset interval.

In some possible embodiments, the indicating module 1205 is configured to send a first indication message to the second communication device, where the first indication message is used to notify the second communication device that the current resource pool of the first communication device or resources in the current resource pool meet the third condition; or sending a second indication message to the second communication device, wherein the second indication message is used for indicating the second communication device to perform DRX configuration; and/or sending a third indication message to the second communication equipment, wherein the third indication message is used for indicating the DRX configuration information.

In some possible embodiments, the apparatus may further include: and the receiving module is configured to receive a fourth indication message from the second communication device, where the fourth indication message is used to indicate that the packet loss rate or the packet loss rate satisfies a fifth condition.

Based on the same inventive concept, the embodiment of the present application provides a communication apparatus, which can be applied to the communication system. The communication means may correspond to the first communication device described in one or more of the embodiments above. Fig. 13 is another schematic structural diagram of a communication device in an embodiment of the present application, and referring to fig. 13, the communication device 1300 may include: including a processor 1301, memory 1302, bus 1303, input device 1304, output device 1305.

In particular, memory 1302 may include computer storage media in the form of volatile and/or nonvolatile memory such as read only memory and/or random access memory. The memory 1302 may store an operating system, application programs, other program modules, executable code, program data, user account data, user subscription data, and the like.

An input device 1304 may be used to enter commands and information to the first communication device, the input device 1304 such as a keyboard or a pointing device such as a mouse, trackball, touch pad, microphone, joystick, game pad, satellite dish, scanner, or the like. These input devices may be connected to the processor 1301 through the bus 1303.

Output device 1305 may be used to output information to the first communication device, and in addition to a monitor, output device 1305 may also be provided with other peripheral outputs, such as a speaker and/or a printing device, which may also be connected to processor 1301 via bus 1303.

The first communication device may connect into a network, such as a Local Area Network (LAN), through network interface 1306. In a networked environment, computer-executable instructions stored in the first communications device may be stored in a remote memory storage device and are not limited to local storage.

When the processor 1301 in the first communication device executes the executable code or the application program stored in the memory 1302, the method steps on the first communication device side in the above embodiments may be executed, and specific execution processes refer to the above embodiments, and are not described herein again.

In addition, the memory 1302 stores computer-executable instructions for implementing the functions of the determining module, the triggering module, the monitoring module, the configuring module, the indicating module and the measuring module. The functions/implementation processes of the determining module, the triggering module, the monitoring module, the configuring module, the indicating module, and the measuring module can be implemented by the processor 1301 in fig. 13 calling a computer execution instruction stored in the memory 1302, and the specific implementation processes and functions refer to the related embodiments.

Based on the same inventive concept, a communication method is further provided in the embodiments of the present application, where the method may be applied to a communication system, fig. 14 is a schematic structural diagram of the communication system in the embodiments of the present application, and referring to fig. 14, the communication system 10 may include: the first communication device 141, the second communication device 142, and the third communication device 143, where for different application scenarios, the first communication device may be a transmitting terminal device (denoted as TX UE) or a receiving terminal device (denoted as RX UE), the second communication device may be the TX UE, the RX UE, a network device (e.g., a base station) to which the TX UE belongs or a network device (e.g., a base station) to which the RX UE belongs, and the third communication device may also be the TX UE, the RX UE, a network device (e.g., a base station) to which the TX UE belongs or a network device (e.g., a base station) to which the RX UE belongs.

In the sidelink transmission process, the first communication device may receive first DRX configuration information configured by the second communication device for a first sidelink corresponding to the first communication device, and may also receive first resource configuration information configured by the third communication device for a second sidelink corresponding to the first communication device. Wherein the first DRX configuration information may include part or all of the sidelink DRX parameters. Further, the first DRX configuration information is used to indicate a DRX active period of the first sidelink, for example, the DRX active period may include: DRX active period (duration) or active time (active time). Here, the active duration may include a duration of an activation timer (duration timer), a duration of a retransmission timer (retransmission timer), a duration of an inactivity timer (inactivity timer), and the like, and of course, the active time includes other time periods, which is not specifically limited in the embodiment of the present application.

In some possible embodiments, the first sidelink may be a sidelink between the first communication device and the second communication device, or a sidelink between the first communication device and another terminal device (which may be denoted as another UE). Then, the first DRX configuration information may be used for a first sidelink between the first communication device and the second communication device, and may also be used for a first sidelink between the first communication device and other UEs.

In some possible embodiments, the first sidelink may be one or more sidelinks, and the second sidelink may also be one or more sidelinks. It should be noted that, when the first sidelink is a sidelink, the second sidelink and the first sidelink may be the same sidelink, or the second sidelink and the first sidelink may be different sidelinks, for example, the first sidelink is a sidelink between the TX UE and the RX UE, and the second sidelink may be a sidelink between the RX UE and the TX UE, or may be a sidelink between the RX UE and another RX UE. The first sidelink may also be a sidelink between the TX UE or the RX UE and other UEs, and the second sidelink may be a sidelink between the RX UE and the TX UE, or between the TX UE or the RX UE and other UEs. Further, when the first side link is a plurality of side links, the second side link may be one or more of the first side links, that is, the second side link is a partial side link or a full side link of the first side link.

In this embodiment, the first communication device may configure the first DRX configuration information for itself, and the third communication device configures the first resource configuration information for the first communication device; or, the second communication device may configure the first DRX configuration information for the first communication device, and the first communication device configures the first resource configuration information for itself; alternatively, the second communication device may configure the first DRX configuration information for the first communication device, and the third communication device configures the first resource configuration information for the first communication device. It can be seen that, since the DRX configuration information and the resource configuration information are configured by different entities, a DRX active period indicated by the DRX configuration information and a time region indicated by the resource configuration information may conflict within one or more time periods, for example, as shown in fig. 6, the DRX active period does not intersect with the time domain interval, or as shown in fig. 5, the intersection of the DRX active period and the time domain interval is less than a certain threshold, and at this time, it may be referred to that the DRX configuration information does not match with the resource configuration information. In the embodiment of the present application, the "one time period" may refer to a time slot corresponding to an occurred time domain interval, or may refer to a time slot corresponding to an unexecuted time domain interval.

Further, for mode1, the time domain interval may be a time domain interval corresponding to a resource configured by the base station for the UE; for mode2, the time domain interval may be a time domain interval in a resource pool configured by the base station for the UE, a resource pool configured by the peer UE for the UE, or a resource pool selected by the UE itself. In practical applications, the time domain interval may be represented by a symbol (symbol), a slot (slot), a subframe, a system frame, a superframe, and the like.

Specifically, if the number of time slots where n DRX active periods (indicated by the DRX configuration information) overlap with the time domain interval (indicated by the resource configuration information) is less than a preset threshold (e.g., the total number of overlapping time slots of n durations and the time domain interval is less than b), it may be considered that there is a collision between the DRX active periods and the time domain interval within a time period; or, the number of the time slots where the n DRX active periods overlap the time domain interval divided by the number of the time slots of the n DRX active periods is less than a preset threshold (e.g., the total number of overlapping time slots of the n durations and the time domain interval/(n × the number of the on duration time slots) < a), it can be considered that the DRX active periods and the time domain interval have a conflict within a time period. Wherein, the parameters n, a and b can be determined by the network according to the CBR, service characteristics and other factors of the resource pool, and are configured or preconfigured through system information, RRC message or MAC CE/SCI; alternatively, the value of n may be defined as (the least common multiple of the number of slots of the on duration and the length of the bitmap (bitmap)) the number of slots of the on duration. Of course, other values of the parameters n, a, and b may also exist, and the embodiment of the present application is not particularly limited.

In combination with the above communication system, the present application provides a communication method. In the communication method, if the first DRX configuration information does not match the first resource configuration information, the first communication device sends the first information to the second communication device, and/or sends the second information to the third communication device. That is to say, if there is a conflict between the active period indicated by the first DRX configuration information and the time domain interval indicated by the first resource configuration information in at least one time period, the first communication device sends the first information to the second communication device (which configures a main body of the DRX configuration information for the first communication device) to request the second communication device to configure (may be configured for the first time or reconfigured for the first side link of the first communication device) the DRX configuration information (at this time, the first resource configuration information may be configured for the first communication device itself or configured for the first communication device by the third communication device); or, if there is a conflict between the active period indicated by the first DRX configuration information and the time domain interval indicated by the first resource configuration information in at least one time period, the first communication device sends the second information to the third communication device (which configures a main body of the resource configuration information for the first communication device) to request the third communication device to configure (may be configured for the first time or reconfigured) the resource configuration information for the second sidelink of the first communication device (at this time, the first DRX configuration information may be configured for the first communication device by the second communication device or may be configured by the first communication device itself). In some possible embodiments, the first resource configuration information may be current resource configuration information, and the first DRX configuration information may be DRX configuration information received by the first communication device. Then, fig. 15 is a fourth flowchart illustrating a first communication device side communication method in the embodiment of the present application, and referring to solid lines in fig. 15, the method includes:

S1501: the first communication device receiving first DRX configuration information from a second communication device;

here, the first communication device receives first DRX configuration information configured for the first sidelink by the second communication device.

S1502: the first communication equipment judges whether the first DRX configuration information is matched with the first resource configuration information; if yes, the process is ended, otherwise, S1504 is executed;

the first resource configuration information may be current resource configuration information of the first communication device.

Here, the first communication device determines whether the first DRX configuration information matches current resource configuration information of the first communication device (i.e., first resource configuration information) after receiving the first DRX configuration information through S1501.

Illustratively, referring to a dotted line in fig. 15, before S1501, the method may further include: s1503: the first communication device receives first resource configuration information from a third communication device.

Here, the first communication device receives first resource configuration information configured for the second sidelink by the third communication device, and then the first communication device may determine the time domain interval corresponding to the second sidelink according to the first resource configuration information. Next, the first communication device may perform a second sidelink transmission over the time domain interval. At this time, the first resource configuration information may be understood as current resource configuration information of the first communication device.

S1504: the first communication device sends the first information to the second communication device and/or the first communication device sends the second information to the third communication device.

In this embodiment, when determining that the DRX configuration information does not match the current resource configuration information, the first communication device may request the second communication device to perform DRX configuration, and/or request the third communication device to perform resource configuration, so that the DRX configuration information matches the resource configuration information.

The following describes the above communication method by taking a specific scenario as an example.

In the first case, the first communication device is a TX UE, the second communication device is an RX UE, and the third communication device is a network device (e.g., a base station) to which the TX UE belongs. Fig. 16 is a schematic diagram of a first scenario of resource configuration and DRX configuration in this embodiment, referring to fig. 16, an RX UE or a base station to which the RX UE belongs configures first DRX configuration information for a TX UE, and the TX UE or the base station to which the TX UE belongs configures first resource configuration information for the TX UE. The first DRX configuration information may be used for a first sidelink between the RX UE and the TX UE, and may also be used for a first sidelink between the RX UE and another UE, and the first resource configuration information may be used to indicate a resource configured for the TX UE by the base station in mode1, and may also be used to indicate a resource pool corresponding to the TX UE in mode 2.

It is to be understood that, in the first case, the TX UE may determine the first resource configuration information by itself, and then the TX UE performs S1502 after receiving the first DRX configuration information from the RX UE through S1501, and further performs S1504 when the first DRX configuration information does not match the first resource configuration information, in this case, the TX UE may exemplarily send the first information to the RX UE or re-determine the resource configuration information by itself. Alternatively, the base station to which the TX UE belongs may configure the first resource configuration information for the TX UE, and then the TX UE performs S1502 after receiving the first DRX configuration information from the RX UE through S1501, and further performs S1504 when the first DRX configuration information does not match the first resource configuration information, at this time, for example, the TX UE may send the first information to the RX UE and/or send the second information to the base station to which the TX UE itself belongs.

In some possible embodiments, the above S1504 may, but is not limited to, include the following specific embodiments:

the first method comprises the following steps: the TX UE transmits first information to the RX UE.

The first embodiment is as follows: in case that the RX UE configures the first DRX configuration information for the TX UE, the TX UE transmits DRX configuration failure information (e.g., first information) to the RX UE to request to configure or reconfigure the DRX configuration information for the TX UE.

The second embodiment is as follows: when a base station to which the RX UE belongs configures first DRX configuration information for the TX UE, the TX UE sends DRX configuration failure information (such as the first information) to the RX UE, and then the RX UE sends fourth information to the base station to which the RX UE belongs, so as to indicate that DRX configuration corresponding to a first sidelink fails to the base station to which the RX UE belongs, so that the base station can configure or reconfigure the DRX configuration information for the first sidelink according to identification information corresponding to the first DRX configuration information carried in the fourth information after receiving the DRX configuration failure information.

Here, the fourth information may be the above DRX configuration failure information, that is, the RX UE forwards the DRX configuration failure information to the base station to which the RX UE belongs, or the fourth information may further include indication information generated by the RX UE based on the DRX configuration failure information to indicate that the DRX configuration corresponding to the first sidelink fails.

The DRX configuration failure information or the fourth information may include at least one of: the DRX configuration information may include third information indicating that DRX configuration fails (e.g., information indicating that a failure reason is a SL DRX configuration conflict), identification information corresponding to the first DRX configuration information, a configuration failure type indicating that the DRX configuration information does not match resource configuration information, an effective duration for which the RX UE is not allowed to configure DRX for the TX UE, the first resource configuration information (which may be understood as resource configuration information where a conflict occurs), desired DRX configuration information (which may be understood as suggested DRX configuration information, and the desired DRX configuration information may include partial DRX parameters such as a DRX activation period or may include all DRX parameters), a DRX adjustment amount, and corresponding identification information. Of course, the DRX configuration failure information may also include other information, and this embodiment of the present application is not particularly limited.

In this embodiment of the present application, the DRX configuration failure information may be a PC5 RRC reconfiguration failure message, where the DRX configuration failure information may be carried in a PC5 RRC message, a PC5 MAC CE, an SCI bearer, and the like; the fourth information may be a sidelink UE information message, a SL failure information message, or a SL DRX configuration failure indication message; wherein, the fourth information may be carried in RRC message, MAC CE, PUCCH bearer, etc.

Secondly, the TX UE sends second information to a base station to which the TX UE belongs;

the third concrete implementation mode: the TX UE sends a mode switching request message (i.e., a second message) to a base station to which the TX UE belongs, so as to request the base station to switch a resource allocation mode of the TX UE from a first mode to a second mode, and configure or reconfigure resources for the first communication device according to the second mode. Here, the first mode may be mode1 or mode 2. Accordingly, when the first mode is mode1, the second mode is mode 2; alternatively, when the first mode is mode2, the second mode is mode 1.

For example, if the TX UE is currently in mode1, the TX UE sends a mode switch request message to the base station to which the TX UE belongs, the base station switches the resource allocation mode of the TX UE from mode1 to mode2 in response to the mode switch request message, and then reallocates resources for the TX UE according to mode2, so that the TX UE can receive new resource configuration information sent by the base station. Or, the TX UE is currently in mode2, then the TX UE sends a mode switch request message to the base station to which the TX UE belongs, the base station responds to the mode switch request message to switch the resource allocation mode of the TX UE from mode2 to mode1, and then reallocates resources for the TX UE according to mode1, so that the TX UE can receive new resource configuration information sent by the base station.

The fourth concrete implementation mode: the TX UE sends resource configuration request information to a base station to which the TX UE belongs so as to request the base station to configure or reconfigure resources for the TX UE;

wherein the resource allocation request information includes at least one of the following: for indicating a request reason why the DRX configuration information does not match the resource configuration information, the first DRX configuration information, identification information corresponding to the first DRX configuration information, desired resource configuration information (which may be understood as suggested resource configuration information), or a resource adjustment amount.

Thirdly, the TX UE sends first information to the RX UE and also sends second information to a base station to which the TX UE belongs;

the fifth concrete implementation mode: the base station tries to reconfigure the matched resources for the TX UE according to the first DRX configuration information carried in the resource configuration request information after receiving the resource configuration request information, and then if the base station can provide the matched resources, the base station can send new resource configuration information to the TX UE so as to indicate the reconfigured resources; otherwise, the base station sends DRX configuration failure information to the TX UE, and the TX UE sends the DRX configuration failure information to the RX UE;

the sixth specific implementation mode: the TX UE may first send resource configuration request information to a base station to which the TX UE belongs, and start a timer when sending the resource configuration request information to the base station, and if the timer expires, the TX UE does not receive resource configuration information reconfigured for the second sidelink by the base station, the TX UE sends DRX configuration failure information to the RX UE.

Further, under the condition that the base station to which the RX UE belongs configures the first DRX configuration information for the TX UE, the RX UE may further send fourth information to the base station to which the RX UE belongs, so as to indicate that the DRX configuration corresponding to the first sidelink fails to the base station to which the RX UE belongs, so that the base station may configure or reconfigure the DRX configuration information for the first sidelink according to the identification information corresponding to the first DRX configuration information carried in the fourth information after receiving the DRX configuration failure information.

The seventh embodiment: the TX UE sends resource configuration request information to a base station to which the TX UE belongs, and sends DRX configuration failure information to the RX UE. And (4) optional. Carrying expected resource configuration information and/or resource adjustment quantity in the resource configuration request information; and the DRX configuration failure information carries expected DRX configuration information and/or DRX adjustment quantity.

Illustratively, the source identifier may be a source layer 1 identifier (source L1 ID) or a source layer 2 identifier (source L2ID), and the target identifier may be a target layer 1 identifier (source L1 ID) or a target layer 2 identifier (source L2 ID).

In some possible embodiments, embodiments three to six are preferred if the energy saving requirements of the TX UE are large.

In the second case, the first communication device is an RX UE, the second communication device is a TX UE, and the third communication device is a network device (e.g., a base station) to which the RX UE belongs. Fig. 17 is a schematic diagram of a second scenario of resource configuration and DRX configuration in this embodiment, referring to fig. 17, where TX UE or a base station to which the TX UE belongs configures first DRX configuration information for RX UE, and RX UE or a base station to which the RX UE belongs configures the first resource configuration information for the RX UE. The first DRX configuration information is used for a first sidelink between the RX UE and the TX UE, and the first resource configuration information is used for indicating a reception resource corresponding to the RX UE in mode2, where the reception resource is used for the first sidelink.

It is to be understood that, in the second case, the RX UE may determine the first resource configuration information by itself, and then the RX UE performs S1502 after receiving the first DRX configuration information from the TX UE through S1501, and further performs S1504 when the first DRX configuration information does not match the first resource configuration information, in which case, for example, the RX UE may transmit the first information to the TX UE or re-determine the resource configuration information by itself. Alternatively, the base station to which the RX UE belongs may configure the first resource configuration information for the RX UE, and then the RX UE performs S1502 after receiving the first DRX configuration information from the TX UE through S1501, and further performs S1504 when the first DRX configuration information does not match the first resource configuration information, in this case, for example, the RX UE may send the first information to the TX UE and/or send the second information to the base station to which the RX UE itself belongs.

In some possible embodiments, the above S1504 may, but is not limited to, include the following specific embodiments:

the first method comprises the following steps: the RX UE transmits first information to the TX UE.

The first embodiment is as follows: in case that the TX UE configures the first DRX configuration information for the RX UE, the RX UE transmits DRX configuration failure information (e.g., first information) to the TX UE to request the TX UE to configure or reconfigure the DRX configuration information.

The second embodiment is as follows: when the base station to which the TX UE belongs configures the first DRX configuration information for the RX UE, the RX UE sends DRX configuration failure information (such as the first information) to the TX UE, and then the TX UE sends fourth information to the base station to which the TX UE belongs, so as to indicate that the DRX configuration corresponding to the first sidelink fails to the base station to which the TX UE belongs, so that the base station can configure or reconfigure the DRX configuration information for the first sidelink according to the identification information corresponding to the first DRX configuration information carried in the fourth information after receiving the DRX configuration failure information.

The DRX configuration failure information or the fourth information may include at least one of: the DRX configuration information may include third information indicating that the DRX configuration fails (e.g., information indicating that the failure reason is a SL DRX configuration conflict), identification information corresponding to the first DRX configuration information, a configuration failure type indicating that the DRX configuration information does not match the resource configuration information, an effective duration for which the TX UE is not allowed to configure DRX for the RX UE, the first resource configuration information (which may be understood as resource configuration information where a conflict occurs), desired DRX configuration information (which may be understood as suggested DRX configuration information, and the desired DRX configuration information may include partial DRX parameters such as a DRX activation period or may include all DRX parameters), a DRX adjustment amount, and corresponding identification information. Of course, the DRX configuration failure information may also include other information, and this embodiment of the present application is not particularly limited.

Secondly, the RX UE sends second information to the base station to which the RX UE belongs;

the third concrete implementation mode: the RX UE sends mode switching request information (i.e., second information) to a base station to which the RX UE belongs, so as to request the base station to switch the resource allocation mode of the RX UE from the first mode to the second mode, and configures or reconfigures resources for the first communication device according to the second mode. For example, the RX UE is currently in mode2, then the RX UE sends a mode switch request message to the base station to which the RX UE belongs, the base station responds to the mode switch request message to switch the resource allocation mode of the RX UE from mode2 to mode1, and then reallocates resources for the RX UE according to mode1, so that the RX UE can receive the new resource configuration information sent by the base station.

The fourth concrete implementation mode: the method comprises the steps that the RX UE sends resource configuration request information to a base station to which the RX UE belongs so as to request the base station to configure or reconfigure resources for the RX UE;

Thirdly, the RX UE sends first information to the TX UE and also sends second information to the base station to which the RX UE belongs;

the fifth concrete implementation mode: the method comprises the steps that the RX UE can firstly send resource configuration request information to a base station to which the RX UE belongs, after the base station receives the resource configuration request information, the base station tries to reconfigure matched resources for the RX UE according to first DRX configuration information carried in the resource configuration request information, and then if the base station can provide the matched resources, the base station can send new resource configuration information to the RX UE so as to indicate the reconfigured resources; otherwise, the base station sends DRX configuration failure information to the RX UE, and the RX UE sends the DRX configuration failure information to the TX UE;

the sixth specific implementation mode: the RX UE may first send the resource configuration request information to the base station to which the RX UE belongs, and start a timer when sending the resource configuration request information to the base station, and if the timer expires, the RX UE does not receive the resource configuration information reconfigured for the second sidelink by the base station, the RX UE sends DRX configuration failure information to the TX UE.

Further, under the condition that the base station to which the TX UE belongs configures the first DRX configuration information for the RX UE, the TX UE may further send fourth information to the base station to which the TX UE belongs, so as to indicate that the DRX configuration corresponding to the first sidelink fails to the base station to which the TX UE belongs, so that the base station may configure or reconfigure the DRX configuration information for the first sidelink according to the identification information corresponding to the first DRX configuration information carried in the fourth information after receiving the DRX configuration failure information.

The seventh embodiment: and the RX UE sends resource configuration request information to a base station to which the RX UE belongs and sends DRX configuration failure information to the TX UE. And (4) optional. Carrying expected resource configuration information and/or resource adjustment quantity in the resource configuration request information; and the DRX configuration failure information carries expected DRX configuration information and/or DRX adjustment quantity.

It should be noted that, the identification information corresponding to the DRX configuration information in the foregoing specific embodiment may include at least one of the following: target identification, source identification, side link connection identification, source and target identification pair, side link connection identification, logical channel identification, resource pool identification, side link service identification, MAC PDU identification, TB identification. Illustratively, the source identifier may be a source layer 1 identifier (source L1 ID) or a source layer 2 identifier (source L2 ID), and the target identifier may be a target layer 1 identifier (source L1 ID) or a target layer 2 identifier (source L2 ID).

In the third case, the first communication device is an RX UE, the second communication device is the RX UE or a network device (e.g., a base station) to which the RX UE belongs, and the third communication device is a TX UE. Fig. 18 is a schematic diagram of a third scenario of resource configuration and DRX configuration in this embodiment, referring to fig. 18, where RX UE or a base station to which the RX UE belongs configures first DRX configuration information for the RX UE, and TX UE or a base station to which the TX UE belongs configures first resource configuration information for the RX UE. Wherein the first resource configuration information may comprise resource configuration information for instructing the first communication device to perceive.

In some possible embodiments, the RX UE may be replaced with an "auxiliary UE" and the TX UE may be replaced with an "assisted UE". Then, the first resource configuration information may be auxiliary configuration information (e.g., including resource configuration information for instructing the RX UE to perform sending). The assisted UE transmits assistance configuration information to the assisting UE, and the assisting UE may transmit assistance information (e.g., one or more resource sets) to the assisted UE according to the assistance configuration information.

It can be understood that the assisting UE may be configured to assist the assisted UE to determine the resource configuration information, and the resource configuration information determined by the assisted UE may be used for a side link corresponding to the assisted UE.

Further, the resource allocation pattern of the RX UE may be to autonomously select resources for the UE, such as mode2 or enhanced mode2 in the previous embodiments. Illustratively, enhanced mode2 may include UE (inter) assistance based mode2, UE (inter) cooperation based mode2, mode2b, etc.

It should be noted that the sensing (sending) described in the embodiment of the present application may include sending when UE autonomous resource allocation (e.g., mode2, mode4, and related enhancement methods) is adopted, or may refer to only a partial behavior in sending (e.g., listening to SCI).

In some possible embodiments, the above S1504 may, but is not limited to, include the following specific embodiments:

the first method comprises the following steps: the RX UE sends first information to a base station to which the RX UE belongs.

The first embodiment is as follows: under the condition that the base station to which the RX UE belongs configures the first DRX configuration information for the RX UE, the RX UE sends DRX configuration failure information (such as the first information) to the base station to which the RX UE belongs so as to request the base station to configure or reconfigure the DRX configuration information for the first sidelink after receiving the DRX configuration failure information.

The DRX configuration failure information may be a sidelink UE information message, a SL failure information message, or a SL DRX configuration failure indication information; the DRX configuration failure information may be carried in an RRC message, a MAC CE, a PUCCH bearer, and the like.

The DRX configuration failure information may include at least one of: the DRX configuration information may include third information indicating that the DRX configuration fails (e.g., information indicating that the failure reason is a SL DRX configuration conflict), identification information corresponding to the first DRX configuration information, a configuration failure type indicating that the DRX configuration information does not match the resource configuration information, an effective duration for which the TX UE is not allowed to configure DRX for the RX UE, the first resource configuration information (which may be understood as resource configuration information where a conflict occurs), desired DRX configuration information (which may be understood as suggested DRX configuration information, and the desired DRX configuration information may include partial DRX parameters such as a DRX activation period or may include all DRX parameters), a DRX adjustment amount, and corresponding identification information. Of course, the DRX configuration failure information may also include other information, and this embodiment of the present application is not particularly limited.

Second, the RX UE transmits second information to the TX UE;

the second embodiment is as follows: the RX UE transmits mode switching request information (i.e., second information) to the TX UE to request the TX UE to switch the resource allocation mode of the RX UE from the first mode to the second mode, and configures or reconfigures resources for the first communication device according to the second mode. For example, the RX UE is currently in mode2, then the RX UE sends a mode switch request message to the TX UE, and the TX UE responds to the mode switch request message to switch the resource allocation mode of the RX UE from mode2 to mode1, and then reallocates resources for the RX UE according to mode1, so that the RX UE can receive the new resource configuration information sent by the TX UE.

The third concrete implementation mode: the method comprises the steps that the RX UE sends resource configuration request information to the TX UE so as to request the TX UE to configure or reconfigure resources for the RX UE;

Thirdly, the RX UE sends first information to the base station to which the RX UE belongs and also sends second information to the TX UE;

The fourth concrete implementation mode: the RX UE may send resource configuration request information to the TX UE, and after receiving the resource configuration request information, the TX UE attempts to reconfigure a matched resource for the RX UE according to first DRX configuration information carried in the resource configuration request information, and then, if the TX UE can provide the matched resource, the TX UE may send new resource configuration information to the RX UE to indicate the reconfigured resource; otherwise, the TX UE sends DRX configuration failure information to the RX UE, and the RX UE sends the DRX configuration failure information to the base station to which the RX UE belongs;

the fifth concrete implementation mode: the RX UE may send the resource configuration request message to the TX UE, and start a timer when sending the resource configuration request message to the TX UE, and if the timer expires, the RX UE does not receive the resource configuration message reconfigured for the second sidelink by the TX UE, the RX UE sends DRX configuration failure message to the base station to which the RX UE belongs.

Further, when the base station to which the TX UE belongs configures the first resource configuration information for the RX UE, the TX UE may further send a resource configuration request message (for example, a fourth message) to the base station to which the TX UE belongs, so as to instruct the base station to which the TX UE belongs to perform resource reconfiguration for the first sidelink, so that the base station configures or reconfigures the resource configuration information for the first sidelink after receiving the resource configuration request message.

The sixth specific implementation mode: and the RX UE sends resource configuration request information to the TX UE and sends DRX configuration failure information to the base station to which the RX UE belongs. And (4) optional. Carrying expected DRX configuration information and/or DRX adjustment quantity in the resource configuration request information; the DRX configuration failure information carries the expected resource configuration information and/or resource adjustment amount.

In a fourth case, the first communication device is an RX UE, the second communication device is a TX UE, and the third communication device is a network device (e.g., a base station) to which the RX UE belongs. Fig. 19 is a schematic diagram of a fourth scenario of resource configuration and DRX configuration in this embodiment, referring to fig. 19, where TX UE or a base station to which the TX UE belongs configures first DRX configuration information for RX UE, and RX UE or a base station to which the RX UE belongs configures the first resource configuration information for the RX UE. The first DRX configuration resource is used for a first sidelink between the RX UE and the TX UE, the first resource configuration information is used for the RX UE to serve as a second sidelink between the TX UE and another UE (i.e., a fourth communication device), and the first resource configuration information is used for instructing the RX UE to transmit sidelink data on the second sidelink, and may also be understood as the first resource configuration information is used for the RX UE (serving as the TX UE) to transmit sidelink data to another UE (i.e., the fourth communication device).

It is to be understood that, in the fourth case, the RX UE may determine the first resource configuration information by itself, and then the RX UE performs S1502 after receiving the first DRX configuration information from the TX UE through S1501, and further performs S1504 when the first DRX configuration information does not match the first resource configuration information, in which case, for example, the RX UE may transmit the first information to the TX UE or re-determine the resource configuration information by itself. Alternatively, the base station to which the RX UE belongs may configure the first resource configuration information for the RX UE, and then the RX UE performs S1502 after receiving the first DRX configuration information from the TX UE through S1501, and further performs S1504 when the first DRX configuration information does not match the first resource configuration information, in this case, for example, the RX UE may send the first information to the TX UE and/or send the second information to the base station to which the RX UE itself belongs.

In some possible embodiments, the above S1504 may, but is not limited to, include the following specific embodiments:

the first method comprises the following steps: the RX UE transmits first information to the TX UE.

The first embodiment is as follows: in case that the TX UE configures the first DRX configuration information for the RX UE, the RX UE transmits DRX configuration failure information (e.g., first information) to the TX UE to request to configure or reconfigure the DRX configuration information for the TX UE.

Secondly, the RX UE sends second information to the base station to which the RX UE belongs;

Thirdly, the RX UE sends first information to the TX UE and also sends second information to the base station to which the RX UE belongs;

In a fifth case, the first communication device is an RX UE, the second communication device is the RX UE or a network device (e.g., a base station) to which the RX UE belongs, and the third communication device is a TX UE. Fig. 20 is a schematic diagram of a fifth scenario of resource allocation and DRX configuration in the embodiment of the present application, and referring to fig. 20, an RX UE or a base station to which the RX UE belongs configures first DRX configuration information for the RX UE, and a TX UE or a base station to which the TX UE belongs configures first resource configuration information for the RX UE; the first resource configuration information is used for indicating one or more resource sets corresponding to the RX UE.

In some possible embodiments, the RX UE may be replaced with an "assisted UE", a "scheduled UE", or a "member UE"; TX UEs may be replaced with "auxiliary UEs", "scheduling UEs", or "head UEs". Then, the first resource configuration information may be auxiliary information for indicating one or more resource sets. The assisted UE transmits assistance configuration information to the assisting UE, and the assisting UE may transmit the assistance information to the assisted UE according to the assistance configuration information.

Further, the resource allocation pattern of the RX UE may be autonomous selection of resources for the UE, such as mode2) or enhanced mode2 as described in previous embodiments. Illustratively, enhanced mode2 may include UE (inter) assistance based mode2, UE (inter) cooperation based mode2, mode2d, and so on.

In some possible embodiments, in a relay scenario, the assisting UE may be understood as a relay (delay) UE, and the assisted UE may be understood as a remote (remote) UE. The relay UE may assist the remote UE in determining the resource configuration information, e.g., the relay UE sends the first resource configuration information configured by the base station to the remote UE.

In some possible embodiments, the above S1504 may, but is not limited to, include the following specific embodiments:

the first method comprises the following steps: the RX UE sends first information to a base station to which the RX UE belongs.

The first embodiment is as follows: under the condition that the base station to which the RX UE belongs configures the first DRX configuration information for the RX UE, the RX UE sends DRX configuration failure information (such as the first information) to the base station to which the RX UE belongs, so as to request the base station to configure or reconfigure the DRX configuration information for the first sidelink after receiving the DRX configuration failure information.

In practical applications, the DRX configuration failure information may be a sidelink UE information message, a SL failure information message, or a SL DRX configuration failure indication information, where the SL DRX configuration failure indication information may be carried in an RRC message, a MAC CE, a SCI, and the like.

Second, the RX UE transmits second information to the TX UE;

Thirdly, the RX UE sends first information to the base station to which the RX UE belongs and also sends second information to the TX UE;

Further, when the base station to which the TX UE belongs configures the first resource configuration information for the RX UE, the TX UE may further send a resource configuration request message to the base station to which the TX UE belongs, so as to instruct the base station to which the TX UE belongs to perform resource reconfiguration for the first sidelink, so that the base station configures or reconfigures the resource configuration information for the first sidelink after receiving the resource configuration request message.

The sixth specific implementation mode: and the RX UE sends resource configuration request information to the TX UE and sends DRX configuration failure information to the base station to which the RX UE belongs. And (4) optional. Carrying expected resource configuration information and/or resource adjustment quantity in the resource configuration request information; and the DRX configuration failure information carries expected DRX configuration information and/or DRX adjustment quantity.

In some possible embodiments, the first resource configuration information may be resource configuration information received by the first communication device, and the first DRX configuration information may be current DRX configuration information of the first communication device. Then, fig. 21 is a fifth flowchart illustrating a first communication device side communication method in the embodiment of the present application, and referring to solid lines in fig. 21, the method includes:

S2101: the first communication equipment receives first resource configuration information from the third communication equipment;

here, the first communication device receives first resource configuration information configured for the second sidelink by the third communication device.

S2102: the first communication equipment judges whether the first resource configuration information is matched with the first DRX configuration information; if yes, the process is ended, otherwise, S2104 is executed;

wherein, the first DRX configuration information may be current DRX configuration information of the first communication device.

Here, the first communication device determines whether the first resource configuration information matches the first communication device' S current DRX configuration information (i.e., first DRX configuration information) after receiving the first resource configuration information through S2101.

Exemplarily, referring to a dotted line in fig. 21, before S2101, the method may further include: s2103: the first communication device receives first DRX configuration information from the second communication device.

Here, the first communication device receives first DRX configuration information configured for the first sidelink by the second communication device, and then the first communication device may perform discontinuous reception according to the first DRX configuration information. At this time, the first DRX configuration information may be understood as current DRX configuration information of the first communication device.

S2104: the first communication device sends the first information to the second communication device and/or the first communication device sends the second information to the third communication device.

In this embodiment, when determining that the resource configuration information does not match the current DRX configuration information, the first communication device may request the second communication device to perform DRX configuration, and/or request the third communication device to perform resource configuration, so that the DRX configuration information matches the resource configuration information.

The following describes the above communication method by taking a specific scenario as an example.

In the sixth case, the first communication device is a TX UE, the second communication device is an RX UE, and the third communication device is a network device (e.g., a base station) to which the TX UE belongs. Fig. 22 is a schematic diagram of a sixth scenario of resource configuration and DRX configuration in this embodiment, referring to fig. 22, where a TX UE, an RX UE, or a base station to which the RX UE belongs configures first DRX configuration information for the TX UE, and the base station to which the TX UE belongs configures the first resource configuration information for the TX UE. The first resource configuration information may be used to indicate a resource configured for the TX UE by the base station in mode1, or may be used to indicate a resource pool corresponding to the TX UE in mode 2.

It is to be understood that in the sixth scenario, the TX UE may determine the first DRX configuration information by itself, and then the TX UE performs S2102 after receiving the first resource configuration information from the base station to which the TX UE belongs through S2101, and then performs S2104 when the first DRX configuration information does not match the first resource configuration information, in this case, for example, the TX UE may send the second information to the base station to which the TX UE belongs or re-determine the DRX configuration information by itself. Alternatively, the RX UE or the base station to which the RX UE belongs may configure the first DRX configuration information for the TX UE, and then the TX UE performs S2102 after receiving the first resource configuration information from the base station to which the TX UE belongs through S2101, and further performs S2104 when the first DRX configuration information does not match the first resource configuration information, in this case, for example, the TX UE may send the first information to the RX UE and/or send the second information to the base station to which the TX UE itself belongs.

In some possible embodiments, the above S2104 may be, but is not limited to, include the following specific embodiments:

the first method comprises the following steps: the TX UE transmits first information to the RX UE.

The first embodiment is as follows: in the case that the RX UE or the base station to which the RX UE belongs configures the first DRX configuration information for the TX UE, the TX UE sends DRX configuration request information (e.g., the first information) to the RX UE to request to configure or reconfigure the DRX configuration information for the TX UE.

Wherein the DRX configuration request information includes at least one of: the resource allocation information sending unit is used for sending the request reason that the DRX configuration information is not matched with the resource allocation information, the first resource allocation information, the identification information corresponding to the first resource allocation information, the first DRX configuration information and the identification information corresponding to the first DRX configuration information.

In practical applications, the DRX configuration request information may be a PC5 RRC reconfiguration failure message, where the DRX configuration request information may be carried in a PC5 RRC message, a PC5 MAC CE, an SCI bearer, and the like.

Secondly, the TX UE sends second information to a base station to which the TX UE belongs;

the second embodiment is as follows: the TX UE sends a mode switching request message (i.e., a second message) to a base station to which the TX UE belongs, so as to request the base station to switch a resource allocation mode of the TX UE from a first mode to a second mode, and configure or reconfigure resources for the first communication device according to the second mode. For example, if the TX UE is currently in mode2, the TX UE sends a mode switch request message to the base station to which the TX UE belongs, the base station switches the resource allocation mode of the TX UE from mode2 to mode1 in response to the mode switch request message, and then reallocates resources for the TX UE according to mode1, so that the TX UE can receive new resource configuration information sent by the base station. Or, the TX UE is currently in mode1, then the TX UE sends a mode switch request message to the base station to which the TX UE belongs, the base station responds to the mode switch request message to switch the resource allocation mode of the TX UE from mode1 to mode2, and then reallocates resources for the TX UE according to mode2, so that the TX UE can receive new resource configuration information sent by the base station.

The third concrete implementation mode: the TX UE sends resource configuration failure information to a base station to which the TX UE belongs so as to request the base station to configure or reconfigure resources for the TX UE;

the resource configuration failure information may include at least one of the following: and fourth information for indicating a resource configuration failure, a configuration failure type indicating that the resource configuration information does not match with the DRX configuration information, first DRX configuration information (the first DRX configuration information may include partial DRX parameters such as a DRX activation period or include all DRX parameters), identification information corresponding to the first DRX configuration information, desired resource configuration information (which may be understood as suggested resource configuration information), or a resource adjustment amount.

Thirdly, the TX UE sends first information to the RX UE and also sends second information to a base station to which the TX UE belongs;

the fourth concrete implementation mode: the TX UE can send resource configuration failure information to a base station to which the TX UE belongs, after the base station receives the resource configuration failure information, the base station tries to reconfigure matched resources for the TX UE according to first DRX configuration information carried in the resource configuration failure information, and if the base station can provide the matched resources, the base station can send new resource configuration information to the TX UE to indicate the reconfigured resources; otherwise, the base station sends resource configuration failure information to the TX UE, and the TX UE sends DRX configuration request information to the RX UE;

The fifth concrete implementation mode: the TX UE sends resource configuration failure information to a base station to which the TX UE belongs, and sends DRX configuration request information to the RX UE. Optionally, the resource configuration failure information carries expected resource configuration information and/or resource adjustment amount; the DRX configuration request information carries the expected DRX configuration information and/or DRX adjustment amount.

In a seventh case, the first communication device is an RX UE, the second communication device is a network device to which the RX UE belongs (for example, a base station, the third communication device is a TX UE. fig. 23 is a seventh scenario diagram of resource configuration and DRX configuration in this embodiment, see fig. 23, the RX UE, the TX UE, or the base station to which the TX UE belongs configures first DRX configuration information for the RX UE, and the base station to which the RX UE belongs configures first resource configuration information for the RX UE.

It is understood that in the seventh case, the RX UE may determine the first DRX configuration information by itself, and then the RX UE performs S2102 after receiving the first resource configuration information from the base station to which the RX UE belongs through S2101, and then performs S2104 when the first DRX configuration information does not match the first resource configuration information, in this case, for example, the RX UE may send the second information to the base station to which the RX UE belongs or re-determine the DRX configuration information by itself. Alternatively, the TX UE or the base station to which the TX UE belongs may configure the first DRX configuration information for the RX UE, then the RX UE performs S2102 after receiving the first resource configuration information from the base station to which the RX UE belongs through S2101, and further performs S2104 when the first DRX configuration information does not match the first resource configuration information, at this time, for example, the RX UE may send the first information to the TX UE and/or send the second information to the base station to which the RX UE itself belongs.

In some possible embodiments, the above S2104 may be, but is not limited to, include the following specific embodiments:

the first method comprises the following steps: the RX UE transmits first information to the TX UE.

The first embodiment is as follows: in the case that the TX UE or a base station to which the TX UE belongs configures first DRX configuration information for the RX UE, the RX UE transmits DRX configuration request information (e.g., the first information) to the TX UE to request to configure or reconfigure the DRX configuration information for the TX UE.

Wherein the DRX configuration request information includes at least one of: the request reason for indicating that the DRX configuration information is not matched with the resource configuration information, the first resource configuration information, the identification information corresponding to the first resource configuration information, the expected DRX configuration information and the DRX adjustment amount.

Secondly, the RX UE sends second information to the base station to which the RX UE belongs;

the second embodiment is as follows: the RX UE sends resource configuration failure information to a base station to which the RX UE belongs so as to request the base station to configure or reconfigure resources for the TX UE;

the resource configuration failure information may include at least one of the following: the fifth information is used for indicating resource configuration failure, and is used for indicating a configuration failure type that the resource configuration information does not match with the DRX configuration information, the first DRX configuration information (the first DRX configuration information may include partial DRX parameters such as a DRX activation period or include all DRX parameters), identification information corresponding to the first DRX configuration information, expected resource configuration information (which may be understood as suggested resource configuration information), or a resource adjustment amount.

Thirdly, the RX UE sends first information to the TX UE and also sends second information to the base station to which the RX UE belongs;

the third concrete implementation mode: and the RX UE sends resource configuration failure information to the base station to which the RX UE belongs and sends DRX configuration request information to the TX UE. Optionally, the resource configuration failure information carries expected resource configuration information and/or resource adjustment amount; the DRX configuration request information carries the expected DRX configuration information and/or DRX adjustment amount.

In an eighth case, similar to the scenario of the third case, the first communication device is an RX UE, the second communication device is a network device (e.g., a base station) to which the RX UE belongs, and the third communication device is a TX UE. Fig. 24 is an eighth scenario diagram of resource configuration and DRX configuration in this embodiment, referring to fig. 24, where RX UE or a base station to which the RX UE belongs configures first DRX configuration information for the RX UE, and TX UE or a base station to which the TX UE belongs configures first resource configuration information for the RX UE. Wherein the first resource configuration information may include resource configuration information for instructing the RX UE to perceive.

It is to be understood that, in the eighth scenario, the RX UE may determine the first DRX configuration information by itself, and then the RX UE performs S2102 after receiving the first resource configuration information (including the resource configuration information for instructing the RX UE to sense) from the TX UE through S2101, and further performs S2104 when the first DRX configuration information does not match the first resource configuration information, in this case, the RX UE may exemplarily send the second information to the TX UE or re-determine the DRX configuration information by itself. Alternatively, the base station to which the RX UE belongs may configure the first DRX configuration information for the RX UE, and then the RX UE performs S2102 after receiving the first resource configuration information from the TX UE through S2101, and further performs S2104 when the first DRX configuration information does not match the first resource configuration information, in this case, for example, the RX UE may transmit the first information to the base station to which the RX UE belongs and/or transmit the second information to the TX UE.

In some possible embodiments, the above S2104 may be, but is not limited to, include the following specific embodiments:

the first method comprises the following steps: the TX UE transmits first information to the RX UE.

The first embodiment is as follows: in the case that the base station to which the RX UE belongs configures the first DRX configuration information for the RX UE, the RX UE sends DRX configuration request information (such as the first information) to the base station to which the RX UE belongs to request to configure or reconfigure the DRX configuration information for the base station.

Second, the RX UE transmits second information to the TX UE;

the second embodiment is as follows: the RX UE transmits mode switching request information (i.e., second information) to the TX UE to request the TX UE to switch the resource allocation mode of the RX UE from the first mode to the second mode, and configures or reconfigures resources for the first communication device according to the second mode. For example, the RX UE is currently in mode2, then the RX UE sends a mode switch request message to the TX UE, the TX UE responds to the mode switch request message to switch the resource allocation mode of the RX UE from mode2 to mode1, and then reallocates resources for the RX UE according to mode1, and the RX UE can receive the new resource configuration information sent by the base station.

The third concrete implementation mode: the RX UE sends resource configuration failure information to the TX UE to request the TX UE to configure or reconfigure resources for the RX UE;

Thirdly, the RX UE sends first information to the base station to which the RX UE belongs and also sends second information to the TX UE;

the fourth concrete implementation mode: and the RX UE sends resource configuration failure information to the TX UE and sends DRX configuration request information to a base station to which the RX UE belongs. Optionally, the resource configuration failure information carries expected resource configuration information and/or resource adjustment amount; the DRX configuration request information carries the expected DRX configuration information and/or DRX adjustment amount.

It should be noted that, the identification information corresponding to the DRX configuration information in the foregoing specific embodiment may include at least one of the following: target identification, source identification, side link connection identification, source and target pair identification, side link connection identification, logical channel identification, resource pool identification, side link service identification, MAC PDU identification, TB identification. Illustratively, the source identifier may be a source layer 1 identifier (source L1 ID) or a source layer 2 identifier (source L2 ID), and the target identifier may be a target layer 1 identifier (source L1 ID) or a target layer 2 identifier (source L2 ID).

In the ninth case, the first communication device is an RX UE, the second communication device is a TX UE, and the third communication device is a network device (e.g., a base station) to which the RX UE belongs. Fig. 25 is a schematic diagram of a first scenario of resource configuration and DRX configuration in this embodiment, referring to fig. 25, where an RX UE, a TX UE, or a base station to which the TX UE belongs configures first DRX configuration information for the RX UE, and the base station to which the RX UE belongs configures the first resource configuration information for the RX UE. The first DRX configuration resource is used for a first sidelink between the RX UE and the TX UE, the first resource configuration information is used for the RX UE to serve as a second sidelink between the TX UE and another UE (i.e., a fourth communication device), and the first resource configuration information is used for instructing the RX UE to transmit sidelink data on the second sidelink, and it can also be understood that the first resource configuration information is used for the RX UE (serving as the TX UE) to transmit sidelink data to another UE (i.e., the fourth communication device).

It is to be understood that in the ninth case, the RX UE may determine the first DRX configuration information by itself, and then the RX UE performs S2102 after receiving the first resource configuration information from the base station to which the RX UE belongs through S2101, and then performs S2104 when the first DRX configuration information does not match the first resource configuration information, in this case, for example, the RX UE may send the second information to the base station to which the RX UE belongs or re-determine the DRX configuration information by itself. Alternatively, the TX UE or the base station to which the TX UE belongs may configure the first DRX configuration information for the RX UE, then the RX UE performs S2102 after receiving the first resource configuration information from the base station to which the RX UE belongs through S2101, and further performs S2104 when the first DRX configuration information does not match the first resource configuration information, in this case, for example, the RX UE may send the first information to the TX UE and/or send the second information to the base station to which the RX UE belongs.

In some possible embodiments, the above S2104 may be, but is not limited to, include the following specific embodiments:

the first method comprises the following steps: the RX UE transmits first information to the TX UE.

The first embodiment is as follows: in the case that the TX UE or the base station to which the TX UE belongs configures the first DRX configuration information for the RX UE, the RX UE transmits DRX configuration request information (e.g., the first information) to the TX UE to request to configure or reconfigure the DRX configuration information for the TX UE or the base station to which the TX UE belongs.

Secondly, the RX UE sends second information to the base station to which the RX UE belongs;

the second embodiment is as follows: the RX UE sends resource configuration failure information (such as second information) to the base station to which the RX UE belongs, so as to request the base station to configure or reconfigure resources for the RX UE;

Thirdly, the RX UE sends first information to the TX UE and also sends second information to the base station to which the RX UE belongs;

The third concrete implementation mode: and the RX UE sends resource configuration failure information to the base station to which the RX UE belongs and sends DRX configuration request information to the TX UE. Optionally, the resource configuration failure information carries expected resource configuration information and/or resource adjustment amount; the DRX configuration request information carries the expected DRX configuration information and/or DRX adjustment amount.

In a tenth case, similar to the fifth case, the first communication device is a TX UE, the second communication device is a network device (e.g., a base station) to which the TX UE belongs, and the third communication device is the TX UE or the RX UE. Fig. 26 is a schematic diagram of a tenth scenario of resource configuration and DRX configuration in this embodiment, referring to fig. 26, where RX UE or a base station to which the RX UE belongs configures first DRX configuration information for the RX UE, and TX UE or a base station to which the TX UE belongs configures first resource configuration information for the RX UE. The first resource configuration information is used for indicating one or more resource sets corresponding to the RX UE.

It is to be understood that in the tenth case, the RX UE may determine the first DRX configuration information by itself, and then the RX UE performs S2102 after receiving the first resource configuration information from the TX UE through S2101, and further performs S2104 when the first DRX configuration information does not match the first resource configuration information, in this case, the RX UE may exemplarily send the second information to the TX UE or re-determine the DRX configuration information by itself. Alternatively, the base station to which the RX UE belongs may configure the first DRX configuration information for the RX UE, and then the RX UE performs S2102 after receiving the first resource configuration information from the TX UE through S2101, and further performs S2104 when the first DRX configuration information does not match the first resource configuration information, in this case, for example, the RX UE may transmit the first information to the base station to which the RX UE belongs and/or transmit the second information to the TX UE.

In some possible embodiments, the above S2104 may be, but is not limited to, include the following specific embodiments:

the first method comprises the following steps: the RX UE sends first information to a base station to which the RX UE belongs.

The first embodiment is as follows: in the case that the base station to which the RX UE itself belongs configures the first DRX configuration information for the RX UE, the RX UE sends DRX configuration request information (such as the first information) to the base station to request to configure or reconfigure the DRX configuration information for the RX UE.

Wherein the DRX configuration request information includes at least one of: the request reason for indicating that the DRX configuration information does not match with the resource configuration information, the first resource configuration information, the identification information corresponding to the first resource configuration information, the first DRX configuration information (the first DRX configuration information may include partial DRX parameters such as a DRX activation period or include all DRX parameters), and the identification information corresponding to the first DRX configuration information.

Second, the RX UE transmits second information to the TX UE;

the second embodiment is as follows: the RX UE sends a mode switch request message (e.g., a second message) to the TX UE to request the TX UE to switch the resource allocation mode of the RX UE from the first mode to the second mode, and configures or reconfigures resources for the first communication device according to the second mode. For example, the RX UE is currently in mode2, then the RX UE sends a mode switch request message to the TX UE, the TX UE responds to the mode switch request message to switch the resource allocation mode of the RX UE from mode2 to mode1, and then reallocates resources for the RX UE according to mode1, and the RX UE can receive the new resource configuration information sent by the base station.

The third concrete implementation mode: the RX UE sends resource configuration failure information to the TX UE to request the TX UE to configure or reconfigure resources for the RX UE;

The resource configuration failure information may include at least one of the following: and fourth information for indicating a resource configuration failure, a configuration failure type indicating that the resource configuration information does not match with the DRX configuration information, first DRX configuration information (the first DRX configuration information may include partial DRX parameters such as a DRX activation period or include all DRX parameters), identification information corresponding to the first DRX configuration information, desired resource configuration information (which may be understood as suggested resource configuration information), or a resource adjustment amount.

Thirdly, the RX UE sends first information to the base station to which the RX UE belongs and also sends second information to the TX UE;

As can be seen from the above, when the first communication device determines that the first resource configuration information does not match the first DRX configuration information (i.e., the SL resource does not match the SL DRX), the first information is sent to the second communication device and/or the second information is sent to the third communication device, so that the SL resource configured by the second communication device and/or the third communication device matches the SL DRX.

Further, when the first communication device determines that the SL resource is not matched with the SL DRX, the first communication device needs to send the SL DRX configuration to a SL resource configuration subject (base station or UE), which can save the signaling overhead of the first communication device sending its related SL DRX to the SL resource configuration subject; when the first communication device determines that the SL resource is not matched with the SL DRX, the first communication device needs to send the SL resource configuration to the SL DRX configuration main body (base station or UE), which can save the signaling overhead of the first communication device sending its related SL resource configuration to the SL DRX configuration main body.

Further, when the UE determines that the SL resource does not match the SL DRX, the SL DRX configuration body is indicated with a non-matching SL resource configuration/proposed SL DRX configuration, or the SL DRX configuration body is indicated with a non-matching SL DRX configuration/proposed SL resource configuration, or the SL DRX configuration body is indicated with a proposed SL DRX configuration while the proposed SL DRX configuration is indicated with the SL DRX configuration body, so that the subsequently reconfigured SL resource matches the SL DRX.

In some possible embodiments, the sending module 2701 is configured to send the first information to the second communication device and/or send the second information to the third communication device if the first DRX configuration information does not match the first resource configuration information.

The first DRX configuration information is used for a first sidelink corresponding to the first communication device, the first resource configuration information is used for a second sidelink corresponding to the first communication device, the first information is used for indicating the second communication device to perform DRX configuration for the first sidelink, and the second information is used for indicating the third communication device to perform resource configuration for the second sidelink.

Optionally, the "one time period" may refer to a time slot corresponding to an occurred time domain interval, or may refer to a time slot corresponding to an unexecuted time domain interval.

In some possible embodiments, the first resource configuration information is current resource configuration information of the first communication device; a receiving module 2702, configured to receive the first DRX configuration information from the second communication device; a matching module 2703, configured to determine that the first DRX configuration information does not match the first resource configuration information.

In some possible embodiments, the first communication device is a TX UE, the second communication device is an RX UE, and the third communication device is a network device to which the TX UE belongs; the first resource configuration information may be used to indicate a resource configured for the TX UE by the base station in mode1, or may be used to indicate a resource pool corresponding to the TX UE in mode 2.

In some possible embodiments, the first communication device is an RX UE, the third communication device is a TX UE, and the second communication device is a network device to which the RX UE belongs; wherein the first resource configuration information comprises resource configuration information for indicating the RX UE to perceive.

In some possible embodiments, the first communication device is an RX UE, the second communication device is a TX UE, and the third communication device is a network device to which the RX UE belongs; the first DRX configuration resource is used for a first sidelink between the RX UE and the TX UE, the first resource configuration information is used for the RX UE to serve as a second sidelink between the TX UE and other RX UEs, and the first resource configuration information is used for instructing the RX UE to transmit sidelink data on the second sidelink, and may also be understood as the first resource configuration information is used for the RX UE (serving as the TX UE) to transmit sidelink data to other UEs.

In some possible embodiments, the first communication device is an RX UE, the second communication device is a network device to which the RX UE belongs, and the third communication device is a TX UE; the first DRX configuration resource is used for a first side link between the RX UE and the TX UE, and the first resource configuration information is used for indicating one or more resource sets corresponding to the RX UE.

Further, the first communication device may be an assisted user equipment, the second communication device may be a network device to which the assisted user equipment belongs, and the third communication device may be an assisting user equipment; the first DRX configuration resource is used for a first side link between the RX UE and the TX UE, and the first resource configuration information is used for indicating one or more resource sets corresponding to the RX UE.

In some possible embodiments, the sending module 2701 is specifically configured to send mode switching request information to the third communication device, where the mode switching request information is used to request the third communication device to switch the resource allocation mode of the first communication device from the first mode to the second mode; or, sending the resource configuration request information to the third communication device.

Wherein the resource allocation request information includes at least one of: the request reason for indicating that the DRX configuration information is not matched with the resource configuration information, the first DRX configuration information, the identification information corresponding to the first DRX configuration information, the expected resource configuration information or the resource adjustment amount.

In some possible embodiments, the sending module 2701 is specifically configured to send DRX configuration failure information to the second communication device.

Wherein the DRX configuration failure information comprises at least one of the following information: the third information is used for indicating DRX configuration failure, the identification information corresponding to the DRX configuration information, the configuration failure type is used for indicating that the DRX configuration information is not matched with the resource configuration information, the effective duration of the DRX configuration for the first communication equipment is not allowed to be configured by the second communication equipment, the first resource configuration information, the expected DRX configuration information, the DRX adjustment amount and the corresponding identification information.

In some possible embodiments, the receiving module 2702 is further configured to receive DRX configuration failure information sent by the third communications apparatus; the sending module 2701 is further configured to send DRX configuration failure information to the second communication device.

In some possible embodiments, the apparatus 2700 further includes a timer, configured to be started after the sending module 2701 sends the resource configuration request information to the third communication device; the sending module 2701 is further configured to send DRX configuration failure information to the second communication device when the timer expires and the receiving module 2702 does not receive the resource configuration information sent by the third communication device.

It is to be understood that the fourth information may be the above DRX configuration failure information, that is, the RX UE forwards the DRX configuration failure information to the base station to which the RX UE belongs, or the fourth information may further include indication information generated by the RX UE based on the DRX configuration failure information to indicate that the DRX configuration corresponding to the first sidelink fails.

Wherein, the identification information may include at least one of: target identification, source identification, side link connection identification, source and target identification pair, side link connection identification, logical channel identification, resource pool identification, side link service identification, media access control layer protocol data unit MAC PDU identification, and transport block TB identification.

In some possible embodiments, the sending module 2701 is further configured to send resource configuration request information to the third communication device, and send DRX configuration failure information to the second communication device.

In some possible embodiments, the first DRX configuration information is current DRX configuration information of the first communication device; a receiving module 2702, further configured to receive first resource configuration information from a third communication device; a matching module 2703, configured to determine that the first DRX configuration information does not match the first resource configuration information.

In some possible embodiments, the first communication device is an RX UE, the second communication device is a network device to which the RX UE belongs, and the third communication device is an RX UE. The first resource configuration information is used to indicate the receiving resources corresponding to the TX UE in mode 2.

In some possible embodiments, the first communication device is an RX UE, the second communication device is a network device of the RX UE, and the third communication device is a TX UE; wherein the first resource configuration information comprises resource configuration information for indicating the RX UE to perceive.

Further, the first communication device may be an assisted user equipment, the second communication device may be a network device to which the assisted user equipment belongs, and the third communication device may be an assisting user equipment; wherein the first resource configuration information comprises resource configuration information for indicating the first communication device to perceive.

In some possible embodiments, the first communication device is an RX UE, the second communication device is a TX UE, and the third communication device is a network device to which the RX UE belongs; the first resource configuration information is used for the RX UE to transmit sidelink data on a second sidelink with other UEs, and may also be understood as that the first resource configuration information is used for the RX UE (as a TX UE) to transmit sidelink data to other UEs.

In some possible embodiments, the first communication device is an RX UE, the second communication device is a network device to which the RX UE belongs, and the third communication device is a TX UE; the first resource configuration information is used for indicating one or more resource sets corresponding to the RX UE.

In some possible embodiments, the sending module 2701 is further configured to send mode switching request information to the third communication device, where the mode switching request information is used to request the third communication device to switch the resource allocation mode of the first communication device from the first mode to the second mode and configure resources for the first communication device according to the second mode; or sending resource configuration failure information to the third communication device, wherein the resource configuration failure information includes at least one of the following: and the fifth information is used for indicating the resource configuration failure and indicating the configuration failure type of the resource configuration information which is not matched with the DRX configuration information, the first DRX configuration information, the identification information corresponding to the first DRX configuration information, the expected resource configuration information or the resource adjustment amount.

In some possible embodiments, the sending module 2701 is further configured to send DRX configuration request information to a third communication device. Wherein the DRX configuration request information includes at least one of: for indicating a request reason why the DRX configuration information does not match the resource configuration information, the first resource configuration information, a desired DRX configuration, or a DRX adjustment amount.

In some possible embodiments, the sending module 2701 is further configured to send, by the first communication device, resource configuration failure information to the second communication device, and send DRX configuration request information to the third communication device.

Based on the same inventive concept, referring to fig. 13, when the processor 1301 in the first communication device executes the executable code or the application program stored in the memory 1302, the method steps on the first communication device side in the above embodiments may be executed, and the specific execution process refers to the above embodiments, which is not described herein again.

Further, the memory 1302 stores computer-executable instructions for implementing the functions of the transmitting module, the receiving module, and the matching module. The functions/implementation processes of the sending module, the receiving module, and the matching module may all be implemented by the processor 1301 in fig. 13 calling a computer execution instruction stored in the memory 1302, and the specific implementation processes and functions refer to the above related embodiments.

Based on the same inventive concept, the present application provides a computer-readable storage medium storing instructions for performing a communication method according to one or more embodiments when the instructions are executed on a computer.

Based on the same inventive concept, the embodiments of the present application provide a computer program or a computer program product, which, when executed on a computer, causes the computer to implement the communication method according to one or more embodiments.

Those of skill in the art will appreciate that the functions described in connection with the various illustrative logical blocks, modules, and algorithm steps described in the disclosure herein may be implemented as hardware, software, firmware, or any combination thereof. If implemented in software, the functions described in the various illustrative logical blocks, modules, and steps may be stored on or transmitted over as one or more instructions or code on a computer-readable medium and executed by a hardware-based processing unit. The computer-readable medium may include a computer-readable storage medium, which corresponds to a tangible medium, such as a data storage medium, or any communication medium including a medium that facilitates transfer of a computer program from one place to another (e.g., according to a communication protocol). In this manner, a computer-readable medium may generally correspond to (1) a non-transitory tangible computer-readable storage medium, or (2) a communication medium, such as a signal or carrier wave. A data storage medium may be any available medium that can be accessed by one or more computers or one or more processors to retrieve instructions, code and/or data structures for implementing the techniques described herein. The computer program product may include a computer-readable medium.

By way of example, and not limitation, such computer-readable storage media can comprise RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, flash memory, or any other medium that can be used to store desired program code in the form of instructions or data structures and that can be accessed by a computer. Also, any connection is properly termed a computer-readable medium. For example, if the instructions are transmitted from a website, server, or other remote source using a coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL), or wireless technologies such as infrared, radio, and microwave, then the coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are included in the definition of medium. It should be understood, however, that the computer-readable storage media and data storage media do not include connections, carrier waves, signals, or other transitory media, but are instead directed to non-transitory tangible storage media. Disk and disc, as used herein, includes Compact Disc (CD), laser disc, optical disc, Digital Versatile Disc (DVD), and blu-ray disc where disks usually reproduce data magnetically, while discs reproduce data optically with lasers. Combinations of the above should also be included within the scope of computer-readable media.

The instructions may be executed by one or more processors, such as one or more Digital Signal Processors (DSPs), general purpose microprocessors, Application Specific Integrated Circuits (ASICs), field programmable logic arrays (FPGAs), or other equivalent integrated or discrete logic circuitry. Thus, the term "processor," as used herein may refer to any of the foregoing structure or any other structure suitable for implementation of the techniques described herein. Additionally, in some aspects, the functions described by the various illustrative logical blocks, modules, and steps described herein may be provided within dedicated hardware and/or software modules configured for encoding and decoding, or incorporated in a combined codec. Also, the techniques may be fully implemented in one or more circuits or logic elements.

The techniques of this application may be implemented in a wide variety of devices or apparatuses, including a wireless handset, an Integrated Circuit (IC), or a set of ICs (e.g., a chipset). Various components, modules, or units are described in this application to emphasize functional aspects of means for performing the disclosed techniques, but do not necessarily require realization by different hardware units. Indeed, as described above, the various units may be combined in a codec hardware unit, in conjunction with suitable software and/or firmware, or provided by an interoperating hardware unit (including one or more processors as described above).

In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.

The above description is only an exemplary embodiment of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application are intended to be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

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