阅读说明：本技术 通信方法及装置 (Communication method and device ) 是由 乔云飞 陈莹 王晓鲁 于 2020-06-09 设计创作，主要内容包括：本申请实施例提供一种通信方法及装置,该方法包括：接收来自网络设备的第一指示信息,第一指示信息用于指示网络设备调度的HARQ进程标识的第一部分；获取HARQ进程标识的第二部分；根据HARQ进程标识的第一部分和HARQ进程标识的第二部分,确定HARQ的进程标识。与现有技术相比,本申请将HARQ进程标识拆分为第一部分和第二部分来分别进行指示,从而在不修改DCI格式的基础上扩展了HARQ进程的指示范围。(The embodiment of the application provides a communication method and a device, wherein the method comprises the following steps: receiving first indication information from the network equipment, wherein the first indication information is used for indicating a first part of a HARQ process identifier scheduled by the network equipment; acquiring a second part of the HARQ process identifier; and determining the process identifier of the HARQ according to the first part of the HARQ process identifier and the second part of the HARQ process identifier. Compared with the prior art, the method and the device have the advantages that the HARQ process identification is divided into the first part and the second part for indication respectively, so that the indication range of the HARQ process is expanded on the basis of not modifying the DCI format.)

1. A method of communication, comprising:

receiving first indication information from a network device, wherein the first indication information is used for indicating a first part of a HARQ process identifier scheduled by the network device;

acquiring a second part of the HARQ process identifier;

and determining the process identifier of the HARQ according to the first part of the HARQ process identifier and the second part of the HARQ process identifier.

2. The method of claim 1, wherein the first indication information is carried in Downlink Control Information (DCI) or in an uplink message of a bandwidth part (BWP) or in a downlink message of BWP.

3. The method of claim 1 or 2, wherein the obtaining the second part of the HARQ process identity comprises:

acquiring a demodulation reference signal DMRS of a downlink physical control channel PDCCH;

and determining a second part of the HARQ process identifier according to the initial value of the DMRS.

4. The method of claim 1 or 2, wherein the obtaining the second part of the HARQ process identity comprises:

determining a target BWP of the terminal equipment according to the mapping relation between the first part of the HARQ process identifier and the BWP;

obtaining a second part of HARQ process identification on the target BWP.

5. The method of claim 4, wherein the mapping relationship between the first part of the HARQ process identifier and BWP is configured by RRC signaling.

6. The method of claim 1 or 2, wherein the obtaining the second part of the HARQ process identity comprises:

acquiring time domain information corresponding to the first indication information;

and determining the second part of the HARQ process identifier according to the time domain information and the mapping relation between the time domain information and the second part of the HARQ process identifier.

7. The method of claim 6, wherein the time domain information is a timeslot number in a radio frame corresponding to the first indication information.

8. The method according to any of claims 1-7, wherein the HARQ process identification comprises bitmap information.

9. The method of claim 8, wherein the bitmap information is greater than four bits.

10. A method of communication, comprising:

and sending first indication information to terminal equipment, wherein the first indication information is used for indicating a first part of a HARQ process identifier scheduled by the network equipment, and the first part of the HARQ process identifier is used for being matched with a second part of the HARQ process identifier to determine the HARQ process identifier.

11. The method of claim 10, wherein the first indication information is carried in Downlink Control Information (DCI) or in an uplink message of a bandwidth part (BWP) or in a downlink message of BWP.

12. The method according to claim 10 or 11, wherein after the sending the first indication information to the terminal device, the method further comprises:

and transmitting the second part of the HARQ process identification to the terminal equipment on the target BWP.

13. The method according to any of claims 10-12, wherein the HARQ process identity comprises bitmap information.

14. The method of claim 13, wherein the bitmap information is greater than four bits.

15. A communications apparatus, comprising:

a receiving module, configured to receive first indication information from a network device, where the first indication information is used to indicate a first part of an HARQ process identifier scheduled by the network device;

a processing module, configured to obtain a second part of the HARQ process identifier; and determining the process identifier of the HARQ according to the first part of the HARQ process identifier and the second part of the HARQ process identifier.

16. The apparatus of claim 15, wherein the first indication information is carried in Downlink Control Information (DCI) or in an uplink message of a bandwidth part (BWP) or in a downlink message of BWP.

17. The apparatus according to claim 15 or 16, wherein the processing module is specifically configured to acquire a demodulation reference signal, DMRS, of a downlink physical control channel, PDCCH; and determining a second part of the HARQ process identifier according to the initial value of the DMRS.

18. The apparatus according to claim 15 or 16, wherein the processing module is specifically configured to determine a target BWP of the terminal device according to a mapping relationship between the first part of the HARQ process identifier and the BWP; obtaining a second part of HARQ process identification on the target BWP.

19. The apparatus of claim 18, wherein the mapping relationship between the first portion of the HARQ process identification and BWP is configured by radio resource control, RRC, signaling.

20. The apparatus according to claim 15 or 16, wherein the processing module is specifically configured to obtain time domain information corresponding to the first indication information; and determining the second part of the HARQ process identifier according to the time domain information and the mapping relation between the time domain information and the second part of the HARQ process identifier.

21. The apparatus of claim 20, wherein the time domain information is a timeslot number within a radio frame corresponding to the first indication information.

22. The apparatus according to any of claims 15-21, wherein the HARQ process identity comprises bitmap information.

23. The apparatus of claim 22, wherein the bitmap information is greater than four bits.

24. A communications apparatus, comprising:

a storage module for storing an executable program;

a sending module, configured to send first indication information to a terminal device, where the first indication information is used to indicate a first part of an HARQ process identifier scheduled by a network device, and the first part of the HARQ process identifier is used to cooperate with a second part of the HARQ process identifier to determine the HARQ process identifier.

25. The apparatus of claim 24, wherein the first indication information is carried in Downlink Control Information (DCI) or in an uplink message of a bandwidth part (BWP) or in a downlink message of BWP.

26. The apparatus of claim 24 or 25, wherein the transmitting module is further configured to transmit the second part of the HARQ process identification to a terminal device on a target BWP.

27. The apparatus according to any of claims 24-26, wherein the HARQ process identity comprises bitmap information.

28. The apparatus of claim 27, wherein the bitmap information is greater than four bits.

Technical Field

The embodiment of the application relates to the technical field of information, in particular to a communication method and device.

Background

In the field of communication systems, in order to ensure the reliability of data transmission, hybrid automatic repeat request (HARQ) technology is generally used in cellular networks. The HARQ technology is a technology combining Forward Error Correction (FEC) and automatic repeat-request (ARQ). FEC enables the terminal device to correct a part of errors by adding redundant information, thereby reducing the number of retransmissions. For errors that cannot be corrected by FEC, the terminal device requests the network device to retransmit the data according to the ARQ mechanism. In the HARQ technology, in order to improve throughput, a network device may initiate multiple HARQ processes in parallel to a terminal device.

In the existing communication network, the HARQ process is usually indicated by a field HARQ process number in Downlink Control Information (DCI). The field HARQ process number can only contain 4 bits of information at most to indicate four-bit process identities in HARQ, respectively, which results in a maximum number of HARQ processes that can be supported in the existing standard of 16.

However, in the satellite communication network, the number of HARQ processes that the network device needs to initiate to the terminal device in parallel is often greater than 16, and the indication range of the HARQ processes is too small.

Disclosure of Invention

The embodiment of the application provides a communication method and device, which are used for solving the technical problem that the indication range of an HARQ process is too small in the prior art.

In a first aspect, embodiments of the present application provide a communication method, which may be applied to a communication apparatus, and may also be applied to a chip in the communication apparatus, where the communication apparatus may be, for example, a terminal device. The method is described below by taking the application to a terminal device as an example. In the method, a terminal device receives first indication information from a network device, wherein the first indication information is used for indicating a first part of a HARQ process identifier scheduled by the network device. And then, the terminal equipment acquires the second part of the HARQ process identifier and determines the HARQ process identifier according to the first part of the HARQ process identifier and the second part of the HARQ process identifier.

According to the communication method provided by the first aspect, the HARQ process identifier is split into the first part and the second part to be respectively indicated, so that the indication range of the HARQ process is expanded on the basis of not modifying the DCI format.

In an implementation manner, the first indication information is carried in downlink control information DCI or in an uplink message of BWP or in a downlink message of BWP.

In an implementable manner, the acquiring, by the terminal device, the second part of the HARQ process identifier may include: the terminal equipment firstly acquires a demodulation reference signal DMRS of a downlink physical control channel PDCCH, and then determines a second part of the HARQ process identifier according to an initial value of the DMRS.

By the communication method provided by the implementation manner, the indication range of the HARQ process identifier can be expanded by implicitly carrying part of bits of the HARQ process identifier in the demodulation reference signal of the PDCCH.

In an implementable manner, the acquiring, by the terminal device, the second part of the HARQ process identifier may include: the terminal device determines a target BWP of the terminal device according to a mapping relation between a first part of the HARQ process identifier and the BWP. Subsequently, the terminal device obtains a second part of the HARQ process identification on the target BWP.

By the communication method provided by the implementation mode, the indication range of the HARQ process identification is expanded by establishing the mapping relation between the BWP and the HARQ process.

In one implementable approach, the mapping of BWP to the second part of HARQ process identification is configured by radio resource control, RRC, signaling.

In an implementable manner, the acquiring, by the terminal device, the second part of the HARQ process identifier may include: the terminal equipment firstly acquires time domain information corresponding to the first indication information. And then, the terminal equipment determines the second part of the HARQ process identifier according to the time domain information and the mapping relation between the time domain information and the second part of the HARQ process identifier.

Through the communication method provided by the implementation mode, the time domain information can implicitly carry the relevant bits of the HARQ process identifier, so that the indication range of the HARQ process identifier is expanded.

In an implementation manner, the time domain information is a timeslot number in a radio frame corresponding to the first indication information.

In one implementation, the first indication information is carried in DCI.

In one implementation, the HARQ process id includes bitmap information.

In one implementable approach, the bitmap information is greater than four bits.

In a second aspect, embodiments of the present application provide a communication method, which may be applied to a communication apparatus, and may also be applied to a chip in the communication apparatus, where the communication apparatus may be, for example, a network device. The method is described below by taking the application to a network device as an example. In the method, a network device sends first indication information to a terminal device, wherein the first indication information is used for indicating a first part of a HARQ process identifier scheduled by the network device, and the first part of the HARQ process identifier is used for being matched with a second part of the HARQ process identifier to determine the HARQ process identifier.

In an implementation manner, the first indication information is carried in downlink control information DCI or in an uplink message of a bandwidth part BWP or in a downlink message of the BWP.

In an implementable manner, after sending the first indication information to the terminal device, the method further includes:

the second part of the HARQ process identification is sent to the terminal device on the target BWP.

In an implementation manner, the second indication information is carried in downlink control information DCI or in an uplink message of BWP or in a downlink message of BWP.

In one implementation, the HARQ process id includes bitmap information.

In one implementable approach, the bitmap information is greater than four bits.

In a third aspect, an embodiment of the present application provides a communication apparatus, including:

a receiving module, configured to receive first indication information from a network device, where the first indication information is used to indicate a first part of an HARQ process identifier scheduled by the network device;

a processing module, configured to obtain a second part of the HARQ process identifier; and determining the process identifier of the HARQ according to the first part of the HARQ process identifier and the second part of the HARQ process identifier.

In an implementation manner, the first indication information is carried in downlink control information DCI or in an uplink message of a bandwidth part BWP or in a downlink message of the BWP.

In an implementable manner, the processing module is specifically configured to acquire a demodulation reference signal DMRS of a downlink physical control channel PDCCH; and determining a second part of the HARQ process identifier according to the initial value of the DMRS.

In an implementable manner, the processing module is specifically configured to determine a target BWP of the terminal device according to a mapping relationship between the first portion identified by the HARQ process and the BWP; a second part of the HARQ process identification is obtained on the target BWP.

In one implementable manner, the mapping relationship of the first part of the HARQ process identification to BWP is configured by radio resource control RRC signaling.

In an implementable manner, the processing module is specifically configured to obtain time domain information corresponding to the first indication information; and determining the second part of the HARQ process identifier according to the time domain information and the mapping relation between the time domain information and the second part of the HARQ process identifier.

In an implementation manner, the time domain information is a timeslot number in a radio frame corresponding to the first indication information.

In one implementation, the HARQ process identification includes bitmap information.

In one implementable approach, the bitmap information is greater than four bits.

In a fourth aspect, an embodiment of the present application provides a communication apparatus, including:

a storage module for storing an executable program;

and the sending module is used for sending first indication information to the terminal equipment, wherein the first indication information is used for indicating a first part of a HARQ process identifier scheduled by the network equipment, and the first part of the HARQ process identifier is used for being matched with a second part of the HARQ process identifier to determine the HARQ process identifier.

In an implementation manner, the first indication information is carried in downlink control information DCI or in an uplink message of a bandwidth part BWP or in a downlink message of the BWP.

In an implementable manner, the sending module is further configured to send the second part of the HARQ process identification to the terminal device on the target BWP.

In one implementation, the HARQ process identification includes bitmap information.

In one implementable approach, the bitmap information is greater than four bits.

In a fifth aspect, an embodiment of the present application provides a terminal device, where the terminal device includes: a processor, a memory, a transmitter, and a receiver; the transmitter and the receiver are coupled to the processor, the processor controlling the transmitting action of the transmitter, the processor controlling the receiving action of the receiver;

wherein the memory is configured to store computer executable program code, the program code comprising information; the information, when executed by the processor, causes the terminal device to perform the communication method as provided by the first aspect.

In a sixth aspect, an embodiment of the present application provides a network device, where the network device includes: a processor, a memory, a transmitter, and a receiver; the transmitter and the receiver are coupled to the processor, the processor controlling the transmitting action of the transmitter, the processor controlling the receiving action of the receiver;

wherein the memory is configured to store computer executable program code, the program code comprising information; the information, when executed by the processor, causes the network device to perform the communication method as provided by the second side.

In a seventh aspect, an embodiment of the present application provides a chip, including: a processor for calling and running the computer program from the memory so that the device on which the chip is installed performs the communication method as provided by the first aspect.

In an eighth aspect, an embodiment of the present application provides a chip, including: a processor for calling and running the computer program from the memory so that the device in which the chip is installed performs the communication method as provided by the second aspect.

In a ninth aspect, embodiments of the present application provide a computer-readable storage medium for storing a computer program, the computer program enabling a computer to execute the communication method as in the first aspect and the provided communication method.

In a tenth aspect, embodiments of the present application provide a computer-readable storage medium for storing a computer program, where the computer program causes a computer to execute the communication method provided in the second aspect.

In an eleventh aspect, embodiments of the present application provide a computer program product, which includes computer program information, and the computer program information enables a computer to execute the communication method as provided in the first aspect.

In a twelfth aspect, embodiments of the present application provide a computer program product, which includes computer program information, and the computer program information enables a computer to execute the communication method provided in the second aspect.

In a thirteenth aspect, an embodiment of the present application provides a computer program, where the computer program causes a computer to execute the communication method provided in the first aspect.

In a fourteenth aspect, the present application provides a computer program, which enables a computer to execute the communication method provided in the second aspect.

According to the communication method and device provided by the application, the terminal device receives first indication information from the network device, and the first indication information is used for indicating a first part of an HARQ process identifier scheduled by the network device. Subsequently, the terminal device obtains a second part of the HARQ process identity. And finally, the terminal equipment determines the process identifier of the HARQ according to the first part of the HARQ process identifier and the second part of the HARQ process identifier. Compared with the prior art, the HARQ process identification is divided into the first part and the second part for indication respectively, so that the indication range of the HARQ process is expanded on the basis of not modifying the DCI format.

Drawings

Fig. 1 is a schematic view of an application scenario of a communication method according to an embodiment of the present application;

fig. 2 is a signaling interaction diagram of a communication method according to an embodiment of the present application;

fig. 3 is a signaling interaction diagram of another communication method according to an embodiment of the present application;

fig. 4 is a signaling interaction diagram of another communication method according to an embodiment of the present application;

fig. 5 is a signaling interaction diagram of another communication method according to an embodiment of the present application;

fig. 6 is a schematic structural diagram of a communication device according to an embodiment of the present application;

fig. 7 is a schematic structural diagram of another communication device according to an embodiment of the present application;

fig. 8 is a schematic structural diagram of a terminal device according to an embodiment of the present application;

fig. 9 is a schematic structural diagram of a network device according to an embodiment of the present application.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The HARQ technique will be explained first.

The HARQ technology is a technology combining Forward Error Correction (FEC) and automatic repeat-request (ARQ). FEC enables the terminal device to correct a part of errors by adding redundant information, thereby reducing the number of retransmissions. For errors that cannot be corrected by FEC, the terminal device requests the network device to retransmit the data according to the ARQ mechanism.

After receiving the HARQ indication information, the terminal device may detect whether the received data is erroneous by using an error detection code. If no error occurs, the terminal device sends an Acknowledgement Character (ACK) to the network device, and then the network device sends new data; if there is an error, the terminal device sends a Negative Acknowledgement (NACK) to the network device, and then the network device sends the same data.

In order to improve the throughput, the network equipment can initiate a plurality of HARQ processes in parallel, wherein the number of the HARQ processes is N_HARQSpecifically, as shown in formula (1):

wherein RTT is data round trip time T_sfIs the subframe length, T_ueFor the processing time of the terminal device, T_ackFor ACK/NACK transmission time, T_nbProcessing time for the network device.

In different deployment scenarios, the requirements for the number of HARQ processes are usually different, and table 1 is a table of correspondence between deployment positions during satellite communication and the number of HARQ processes.

TABLE 1

In the existing communication network, the HARQ process is usually indicated by a field HARQ process number in Downlink Control Information (DCI). The field HARQ process number can only contain 4 bits of information at most to indicate four-bit process identities in HARQ, respectively, which results in a maximum number of HARQ processes that can be supported in the existing standard of 16.

However, as can be seen from table 1, in the satellite communication network, the number of HARQ processes that the network device needs to initiate to the terminal device in parallel is often greater than 16, and the indication range of the existing HARQ processes is too small. If the bits for indicating the number of HARQ processes in the DCI are simply increased, the DCI format is modified, which may cause a chain change in the control channel design or increase the valuable physical layer overhead

In order to solve the above problem, the present application provides a communication method and apparatus to improve the indication range of the HARQ process. The technical idea of the application is as follows: the HARQ process identification is divided into a first part and a second part for indication respectively, so that the indication range of the HARQ process is expanded on the basis of not modifying the DCI format.

The following explains an application scenario of the present application.

Fig. 1 is a schematic view of an application scenario of a communication method according to an embodiment of the present application. As shown in fig. 1, a terminal device 101 accesses a network through a 5G new air interface, and a base station 102 is deployed on a satellite and connected to a core network device 103 on the ground through a wireless link. Meanwhile, a wireless link exists between the satellites, and signaling interaction and user data transmission between the base station 102 and the base station 102 are completed. When terminal apparatus 101 and base station 102 are communicating, base station 102 may transmit indication information to terminal apparatus 101 to indicate HARQ process identity. Wherein, the 5G new air interface is a wireless link between the terminal device 101 and the base station 102.

The number of the terminal devices 101 and the base stations 102 included in the communication system is not limited in the embodiment of the present application.

The Terminal 101 may also be referred to as a Terminal, a User Equipment (UE), a Mobile Station (MS), a Mobile Terminal (MT), or the like. The terminal device 101 may be a mobile phone (mobile phone), a tablet (pad), a computer with a wireless transceiving function, a Virtual Reality (VR) terminal device, an Augmented Reality (AR) terminal device, a wireless terminal in industrial control (industrial control), a wireless terminal in self driving (self driving), a wireless terminal in remote surgery (remote medical supply), a wireless terminal in smart grid (smart grid), a wireless terminal in smart home (smart home), and the like. The terminal device 101 provided in the embodiment of the present application may support a mobile device with a 5G new air interface, such as a mobile phone, a pad, and other mobile devices. The satellite network can be accessed through an air interface and services such as calling, surfing the internet and the like can be initiated.

The base station 102 is an access network device in a network device and may be configured to interconvert received air frames and IP packets as a router between the wireless terminal and the rest of the access network, which may include an Internet Protocol (IP) network. The base station may also coordinate management of attributes for the air interface. For example, the base station may be a Base Transceiver Station (BTS) in global system for mobile communications (GSM) or Code Division Multiple Access (CDMA), a base station (NodeB, NB) in Wideband Code Division Multiple Access (WCDMA), an evolved node b (eNB or eNodeB) in Long Term Evolution (LTE), a relay station or Access point, or a 5G base station, and the like, but is not limited thereto. The base station 102 provided in the embodiment of the present application may specifically be a 5G base station, and mainly provides a wireless access service, schedules a wireless resource for an access terminal, and provides a reliable wireless transmission protocol and a data encryption protocol. And the 5G base station realize signaling interaction through an Xn interface. Signaling such as NAS of the core network and service data of the user are interacted between the 5G base station and the core network device 103 through an NG interface.

The core network device 103 is a network device, and is used for services such as user access control, mobility management, session management, user security authentication, charging, and the like. The core network device 103 is composed of a plurality of functional units, and may be divided into a control plane unit and a data plane functional entity. The system specifically includes an access and mobility management unit (AMF), a user plane processing Unit (UPF), and a session management unit (SMF), where the AMF is responsible for user access management, security authentication, and mobility management.

In addition, optionally, the communication system according to the embodiment of the present application may further include a ground station 104, configured to forward signaling and service data between the base station 102 and the core network device 103.

It should be noted that the communication method in the embodiment of the present application may be applied to various communication systems, and the implementation of the present application is not limited to a communication system that can be used, and may be a satellite communication system as shown in fig. 1, or other communication systems.

The following describes the technical solutions of the embodiments of the present application in detail with specific embodiments, taking a terminal device and a network device as examples. The following several specific embodiments may be combined with each other, and details of the same or similar concepts or processes may not be repeated in some embodiments.

Fig. 2 is a signaling interaction diagram of a communication method according to an embodiment of the present application. The embodiment relates to a specific process of indicating the HARQ process identification. As shown in fig. 2, the method includes:

s201, the network device sends first indication information to the terminal device, wherein the first indication information is used for indicating a first part of the HARQ process identifier scheduled by the network device.

In this step, after the network device determines the HARQ process to be scheduled, the first indication information may be sent to the terminal device.

The HARQ process identifier includes bitmap information, and compared with the prior art in which the bitmap information of the HARQ process identifier is fixed to four bits, the bitmap information of the HARQ process identifier in the present application is greater than four bits. For example, the bitmap information of the process identifier of HARQ in the present application may be six bits, and accordingly, the maximum process of HARQ is 64. For example, the bitmap information of the process identifier of HARQ in the present application may be eight bits, and accordingly, the maximum process of HARQ is 256.

In some embodiments, the first indication information for indicating the first part of the HARQ process identifier is carried in DCI, for example, the first indication information may be carried in the HARQ process number of DCI. Since the HARQ process number of the DCI can indicate four bits of information at most, correspondingly, the first part of the HARQ process identifier includes bitmap information with four bits at most.

For example, the first indication information may be carried in a Bandwidth part indicator field of the DCI, and since the Bandwidth part indicator field has bitmap information with two bits, correspondingly, the first part of the HARQ process identifier includes bitmap information with at most two bits.

In other embodiments, the first indication information for indicating the first part of the HARQ process identifier is carried in an uplink message of a bandwidth part (BWP) or a downlink message of the BWP. Illustratively, a field HARQ-GROUP-Index may be newly added in the uplink message of BWP or the downlink message of BWP, for indicating the first part of the HARQ process identifier.

It should be noted that bits that may be included in the first part of the HARQ process identifier in the embodiment of the present application are not limited, and may be specifically set according to an actual situation.

In addition, the position of the first part of the HARQ process identifier in the bitmap information is not limited in the embodiment of the present application. For example, if the bitmap information of the HARQ process identifier is six bits, and the first part of the HARQ process identifier includes four bits, the first part of the HARQ process identifier may be the first four bits of the bitmap information of the HARQ process identifier, and may also be the last four bits of the bitmap information of the HARQ process identifier.

S202, the terminal equipment acquires a second part of the HARQ process identifier.

In this step, after the terminal device receives the first indication information sent by the network device to determine the first part of the HARQ process identifier scheduled by the network device, the terminal device may obtain the second part of the HARQ process identifier.

The second part of the HARQ process identifier comprises bitmap information of bits of the HARQ process identifier except the first part of the HARQ process identifier. For example, taking the bitmap information of the HARQ process identifier as six bits as an example, if the first part of the HARQ process identifier may be the first four bits of the bitmap information of the HARQ process identifier, the second part of the HARQ process identifier may be the last two bits of the bitmap information of the HARQ process identifier.

In the embodiment of the present application, how to obtain the second part of the HARQ process identifier is not limited, and three optional ways are provided below to obtain the second part of the HARQ process identifier.

In the first mode, the terminal device may obtain a demodulation reference signal DMRS of a downlink physical control channel PDCCH, and determine the second part of the HARQ process identifier according to an initial value of the DMRS. In the second way, the terminal device may determine the target BWP of the terminal device according to the mapping relationship between the first part identified by the HARQ process and the BWP. Subsequently, the terminal device may acquire the second part of the HARQ process identification on the target BWP. In the third manner, the terminal device may obtain time domain information corresponding to the first indication information, and determine the second part of the HARQ process identifier according to the time domain information and the mapping relationship between the time domain information and the second part of the HARQ process identifier.

It should be noted that, in the embodiment of the present application, the second part of the HARQ process identifier may be determined by using the above optional manner, or may also be determined by using a combination of the first manner and the third manner, which is not limited in the present application.

For example, if the second part of the HARQ process identifier includes two bits of bitmap information, the second part of the HARQ process identifier may be determined through the DMRS of the PDCCH only in the first manner. If the second part of the HARQ process identifier includes four-bit bitmap information, the first mode may be used to determine the bitmap information of the first two bits in the second part of the HARQ process identifier through the DMRS of the PDCCH, and the third mode may be used to determine the bitmap information of the second two bits in the second part of the HARQ process identifier through time domain information, and the bitmap information and the time domain information are combined to form the second part of the HARQ process identifier.

S203, the terminal equipment determines the process identifier of the HARQ according to the first part of the HARQ process identifier and the second part of the HARQ process identifier.

In this step, after acquiring the first part of the HARQ process identifier and the second part of the HARQ process identifier, the terminal device may combine the first part of the HARQ process identifier and the second part of the HARQ process identifier into the process identifier of the completed HARQ.

For example, if the bitmap information of the HARQ process identifier is six bits, the first part of the HARQ process identifier may be the first four bits, specifically 1001, in the bitmap information of the HARQ process identifier. The second part of the HARQ process identifier may be the last two bits, specifically 10, in the bitmap information of the HARQ process identifier. Accordingly, the first part of the HARQ process identity and the second part of the HARQ process identity may be combined into a complete HARQ process identity 100110. The HARQ process identification may then be converted to a decimal number, which determines the 38 th HARQ process scheduled by the network device.

According to the communication method provided by the application, the terminal device receives first indication information from the network device, and the first indication information is used for indicating a first part of a HARQ process identifier scheduled by the network device. Subsequently, the terminal device obtains a second part of the HARQ process identity. And finally, the terminal equipment determines the process identifier of the HARQ according to the first part of the HARQ process identifier and the second part of the HARQ process identifier. Compared with the prior art, the HARQ process identification is divided into the first part and the second part for indication respectively, so that the indication range of the HARQ process is expanded on the basis of not modifying the DCI format.

On the basis of the foregoing embodiment, the following describes the first way of acquiring the second part of the HARQ process identifier. Fig. 3 is a signaling interaction diagram of another communication method according to an embodiment of the present application. As shown in fig. 3, the method includes:

s301, the network device sends first indication information to the terminal device, wherein the first indication information is used for indicating a first part of the HARQ process identifier scheduled by the network device.

In this embodiment, the specific implementation process and implementation principle of step S301 are similar to those of step S201 in fig. 2, and are not described here again.

S302, the terminal device obtains a demodulation reference signal (DMRS) of a Physical Downlink Control Channel (PDCCH).

In this step, after the terminal device receives the first indication information sent by the network device to determine the first part of the HARQ process identifier, the terminal device may obtain the DMRS of the PDCCH to determine the second part of the HARQ process identifier.

The embodiment of the application does not limit how to acquire the DMRS of the PDCCH, and the DMRS can be acquired by using an existing method.

S303, the terminal equipment determines the second part of the HARQ process identifier according to the initial value of the DMRS.

In this step, when the terminal device acquires the DMRS of the PDCCH, the second part of the HARQ process identifier may be determined according to an initial value of the DMRS.

In some embodiments, the second part of the HARQ process identity may be used as an initial parameter to generate a DMRS for the PDCCH, and accordingly, the initial value of the DMRS is associated with the second part of the HARQ process identity.

For example, the sequence r (m) of the DMRS of the PDCCH may be as shown in equation (2):

wherein, c (n) is a pseudo random sequence, and the specific definition can be shown in formulas (3) to (5):

c(n)＝(x₁(n+N_C)+x₂(n+N_C))mod2 (3)

x₁(n+31)＝(x₁(n+3)+x₁(n))mod2 (4)

x₂(n+31)＝(x₂(n+3)+x₂(n+2)+x₂(n+1)+x₂(n))mod2 (5)

where Nc is 1600, x₁(n) is a sequence of m, initialized to x₁(0)＝1,x₁(n)＝0,n＝1,2,...,30，x₂(n) is an m-sequence, initialized to

Wherein the cinit value is related to the second part of the HARQ process identifier, and may be as shown in formula (6):

cinit＝function(HARQ_IDMSB_2_BITS，parameter1，parameter2…) (6)

wherein HARQ _ IDMSB _2_ BITS is the second part of the HARQ process id, and parameter1, parameter2, etc. are parameters independent of the second part of the HARQ process id.

S304, the terminal equipment determines the process identifier of the HARQ according to the first part of the process identifier of the HARQ and the second part of the process identifier of the HARQ.

In this embodiment, the specific implementation process and implementation principle of step S304 are similar to those of step S203 in fig. 2, and are not described here again.

In the communication method provided by the embodiment of the present application, a network device first sends first indication information to a terminal device, where the first indication information is used to indicate a first part of an HARQ process identifier scheduled by the network device. And secondly, the terminal equipment acquires a demodulation reference signal DMRS of a downlink physical control channel PDCCH. And thirdly, the terminal equipment determines the second part of the HARQ process identifier according to the initial value of the DMRS. And finally, the terminal equipment determines the process identifier of the HARQ according to the first part of the HARQ process identifier and the second part of the HARQ process identifier. By the method, the indication range of the HARQ process identifier can be expanded by implicitly carrying part of bits of the HARQ process identifier in the demodulation reference signal of the PDCCH.

On the basis of the foregoing embodiment, the following describes the second way of acquiring the second part of the HARQ process identifier. Fig. 4 is a signaling interaction diagram of another communication method according to an embodiment of the present application. As shown in fig. 4, the method includes:

s401, the network device sends first indication information to the terminal device, wherein the first indication information is used for indicating a first part of a HARQ process identifier scheduled by the network device.

In this embodiment, the specific implementation process and implementation principle of step S401 are similar to those of step S201 in fig. 2, and are not described here again.

S402, the terminal device determines the target BWP of the terminal device according to the mapping relation between the first part of the HARQ process identifier and the BWP.

In this step, after the terminal device receives the first indication information, if the first indication information is carried in a Bandwidth part indicator field of DCI, or carried in an uplink message of the BWP or a downlink message DE field HARQ-GROUP-Index of the BWP, the terminal device may determine the target BWP of the terminal device according to a mapping relationship between the first part of the HARQ process identifier and the BWP.

Wherein, the mapping relationship between the first part of the HARQ process identifier and the BWP is configured by Radio Resource Control (RRC) signaling.

Illustratively, four BWPs are allocated to the terminal device uplink/downlink, and accordingly, the mapping relationship between the first part of the HARQ process identifier and the BWPs is shown in table 2.

TABLE 2

S403, the network device sends the second part of the HARQ process identifier to the terminal device on the target BWP.

In this step, after determining the target BWP, the terminal device may switch the terminal device to the target BWP and receive the second part of the HARQ process id sent by the network device on the target BWP to determine to fetch the HARQ process id.

Accordingly, the range of HARQ process identifications that can be determined on different BWPs is different. Taking the example that the first part of the HARQ process id contains two bits of bitmap information and the second part of the HARQ process id contains four bits of bitmap information, the indicated ranges of BWP and HARQ process id are shown in table 3.

TABLE 3

BWP ID	HARQ ID
		1	0-15
2	16-31
		3	32-47
4	48-63

In some embodiments, the second part of the HARQ process identity may be sent to the terminal device via DCI, similar to the prior art. In this embodiment, the second part of the HARQ process identifier may include at most four bits of bitmap information, so that the second part of the HARQ process identifier may be combined with the first part of the HARQ process identifier to expand the indication range of the HARQ process identifier.

S404, the terminal equipment determines the process identifier of the HARQ according to the first part of the HARQ process identifier and the second part of the HARQ process identifier.

In this embodiment, the specific implementation process and implementation principle of step S404 are similar to those of step S203 in fig. 2, and are not described here again.

In the communication method provided by the embodiment of the present application, a network device first sends first indication information to a terminal device, where the first indication information is used to indicate a first part of an HARQ process identifier scheduled by the network device. Secondly, the terminal device determines the target BWP of the terminal device according to the mapping relation between the first part of the HARQ process identification and the BWP. The network device again sends the second part of the HARQ process identification to the terminal device on the target BWP. And finally, the terminal equipment determines the process identifier of the HARQ according to the first part of the HARQ process identifier and the second part of the HARQ process identifier. By the method, the mapping relation between the BWP and the HARQ process can be established, so that the indication range of the HARQ process identification is expanded.

On the basis of the foregoing embodiment, the following describes the third way to obtain the second part of the HARQ process identifier. Fig. 5 is a signaling interaction diagram of another communication method according to an embodiment of the present application. As shown in fig. 5, the method includes:

s501, the network device sends first indication information to the terminal device, wherein the first indication information is used for indicating a first part of a HARQ process identifier scheduled by the network device.

In this embodiment, the specific implementation process and implementation principle of step S401 are similar to those of step S201 in fig. 2, and are not described here again.

S502, the terminal equipment acquires time domain information corresponding to the first indication information.

In this step, after receiving the first indication information to determine the first part of the HARQ process identifier, the terminal device may obtain time domain information corresponding to the first indication information.

In some embodiments, the time domain information is a time slot number in a radio frame corresponding to the first indication information.

S503, the terminal equipment determines the second part of the HARQ process identifier according to the time domain information and the mapping relation between the time domain information and the second part of the HARQ process identifier.

In this step, after acquiring the time domain information corresponding to the first indication information, the terminal device may determine the second part of the HARQ process identifier according to the time domain information and the mapping relationship between the time domain information and the second part of the HARQ process identifier.

For example, the terminal device may establish a mapping relationship between the time domain information and the second part of the HARQ process identifier according to a pre-indication of the network device. In the subsequent communication process, if the terminal device receives the first indication information, the terminal device tries to acquire a slot number (slot _ index) in the radio frame, and determines the second part of the HARQ process identifier corresponding to the slot number through the mapping relationship between the time domain information and the second part of the HARQ process identifier.

S504, the terminal equipment determines the HARQ process identifier according to the first part of the HARQ process identifier and the second part of the HARQ process identifier.

In this embodiment, the specific implementation process and implementation principle of step S504 are similar to those of step S203 in fig. 2, and are not described here again.

In the communication method provided by the embodiment of the present application, a network device first sends first indication information to a terminal device, where the first indication information is used to indicate a first part of an HARQ process identifier scheduled by the network device. And secondly, the terminal equipment acquires time domain information corresponding to the first indication information. And thirdly, the terminal equipment determines the second part of the HARQ process identifier according to the time domain information and the mapping relation between the time domain information and the second part of the HARQ process identifier. And finally, the terminal equipment determines the process identifier of the HARQ according to the first part of the HARQ process identifier and the second part of the HARQ process identifier. By the method, the relevant bits of the HARQ process identifier can be implicitly carried by the time domain information, so that the indication range of the HARQ process identifier is expanded.

Those of ordinary skill in the art will understand that: all or part of the steps for implementing the method embodiments may be implemented by hardware related to program information, the program may be stored in a computer readable storage medium, and the program executes the steps including the method embodiments when executed; and the aforementioned storage medium includes: various media that can store program codes, such as ROM, RAM, magnetic or optical disks.

Fig. 6 is a schematic structural diagram of a communication device according to an embodiment of the present application. The communication device may be implemented by software, hardware, or a combination of the two, and may be the terminal device or a chip of the terminal device, so as to execute the communication method on the terminal device side. As shown in fig. 6, the communication apparatus 600 includes: a receiving module 601 and a processing module 602.

A receiving module 601, configured to receive first indication information from a network device, where the first indication information is used to indicate a first part of an HARQ process identifier scheduled by the network device;

a processing module 602, configured to obtain a second part of the HARQ process identifier; and determining the process identifier of the HARQ according to the first part of the HARQ process identifier and the second part of the HARQ process identifier.

In an optional implementation manner, the first indication information is carried in downlink control information DCI or in an uplink message of a bandwidth part BWP or in a downlink message of the BWP.

In an optional embodiment, the processing module 602 is specifically configured to obtain a demodulation reference signal DMRS of a downlink physical control channel PDCCH; and determining a second part of the HARQ process identifier according to the initial value of the DMRS.

In an optional implementation manner, the processing module 602 is specifically configured to determine a target BWP of the terminal device according to a mapping relationship between the first part of the HARQ process identifier and the BWP; a second part of the HARQ process identification is obtained on the target BWP.

In an alternative embodiment, the mapping relationship between the first part of the HARQ process identifier and the BWP is configured by radio resource control RRC signaling.

In an optional implementation manner, the processing module 602 is specifically configured to obtain time domain information corresponding to the first indication information; and determining the second part of the HARQ process identifier according to the time domain information and the mapping relation between the time domain information and the second part of the HARQ process identifier.

In an optional implementation manner, the time domain information is a timeslot number in a radio frame corresponding to the first indication information.

In an optional embodiment, the HARQ process identifier includes bitmap information.

In an alternative embodiment, the bitmap information is greater than four bits.

The communication apparatus provided in the embodiment of the present application may perform the actions of the communication method on the terminal device side in the foregoing method embodiments, and the implementation principle and the technical effect are similar, which are not described herein again.

Fig. 7 is a schematic structural diagram of another communication device according to an embodiment of the present application. The communication apparatus may be implemented by software, hardware, or a combination of the two, and may be the network device or a chip of the network device, so as to execute the communication method on the network device side. As shown in fig. 7, the communication apparatus 700 includes: a storage module 701 and a sending module 702.

A storage module 701 for storing an executable program;

a sending module 702, configured to send first indication information to a terminal device, where the first indication information is used to indicate a first part of an HARQ process identifier scheduled by a network device, and the first part of the HARQ process identifier is used to cooperate with a second part of the HARQ process identifier to determine the HARQ process identifier.

In an optional implementation manner, the first indication information is carried in downlink control information DCI or in an uplink message of a bandwidth part BWP or in a downlink message of the BWP.

In an optional embodiment, the sending module 702 is further configured to send the second part of the HARQ process identification to the terminal device on the target BWP.

In an optional embodiment, the HARQ process identifier includes bitmap information.

In an alternative embodiment, the bitmap information is greater than four bits.

The communication apparatus provided in the embodiment of the present application may perform the actions of the communication method on the network device side in the foregoing method embodiments, and the implementation principle and the technical effect are similar, which are not described herein again.

Fig. 8 is a schematic structural diagram of a terminal device according to an embodiment of the present application. As shown in fig. 8, the terminal device may include: a processor 81 (e.g., CPU), a memory 82, a receiver 83, and a transmitter 84; the receiver 83 and the transmitter 84 are coupled to the processor 81, the processor 81 controlling the receiving action of the receiver 83 and the processor 81 controlling the transmitting action of the transmitter 84. The memory 82 may comprise a high-speed RAM memory, and may also include a non-volatile memory NVM, such as at least one disk memory, in which various information may be stored for performing various processing functions and implementing the method steps of the embodiments of the present application. Optionally, the terminal device related to the embodiment of the present application may further include: a power supply 85, a communication bus 86, and a communication port 87. The receiver 83 and the transmitter 84 may be integrated in the transceiver of the terminal device or may be separate transceiving antennas on the terminal device. The communication bus 86 is used to enable communication connections between the elements. The communication port 87 is used for realizing connection communication between the terminal device and other peripherals.

In the embodiment of the present application, the memory 82 is used for storing computer executable program codes, and the program codes include information; when the processor 81 executes the information, the information causes the processor 81 to execute the processing action of the terminal device in the above method embodiment, causes the transmitter 84 to execute the transmitting action of the terminal device in the above method embodiment, and causes the receiver 83 to execute the receiving action of the terminal device in the above method embodiment, which has similar implementation principle and technical effect, and is not described herein again.

Fig. 9 is a schematic structural diagram of a network device according to an embodiment of the present application. As shown in fig. 9, the network device may include: a processor 91 (e.g., CPU) and memory 92; the memory 92 may comprise a high-speed RAM memory, and may also include a non-volatile memory NVM, such as at least one disk memory, in which various information may be stored for performing various processing functions and implementing the method steps of the embodiments of the present application. Optionally, the network device according to the embodiment of the present application may further include: a power supply 95, a communication bus 96, and a communication port 97. A communication bus 96 is used to enable communication connections between the elements. The communication port 97 is used for realizing connection and communication between the network device and other peripherals.

In the embodiment of the present application, the memory 92 is used for storing computer executable program codes, and the program codes include information; when the processor 91 executes the information, the information enables the processor 91 to execute the processing actions of the network device in the above method embodiments, which implement similar principles and technical effects, and are not described herein again.

The embodiment of the present application further provides a communication system, which includes a terminal device and a network device, where the terminal device executes the communication method on the terminal device side, and the network device executes the communication method on the network device side.

The embodiment of the application also provides a chip which comprises a processor and an interface. Wherein the interface is used for inputting and outputting data or instructions processed by the processor. The processor is configured to perform the methods provided in the above method embodiments. The chip can be applied to terminal equipment and network equipment.

The present invention also provides a computer-readable storage medium, which may include: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, are specifically, the computer-readable storage medium stores program information, and the program information is used for the communication method of the terminal device side or the communication method of the network device side.

The embodiment of the present application also provides a program, which is used to execute the communication method on the terminal device side or the communication method on the network device side provided in the above method embodiments when executed by a processor.

The present application further provides a program product, such as a computer-readable storage medium, where instructions are stored, and when the program product runs on a computer, the program product causes the computer to execute the communication method on the terminal device side or the communication method on the network device side provided in the foregoing method embodiments.

In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. The procedures or functions according to the embodiments of the invention are brought about in whole or in part when the computer program instructions are loaded and executed on a computer. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by wire (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wirelessly (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that incorporates one or more of the available media. The usable medium may be a magnetic medium (e.g., floppy Disk, hard Disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., Solid State Disk (SSD)), among others.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.