阅读说明：本技术 一种数据处理方法及相关设备 (Data processing method and related equipment ) 是由 冯淑兰 于 2020-05-11 设计创作，主要内容包括：本申请实施例公开了一种数据处理方法,可以应用于无线通信系统或设备到设备D2D通信等。本申请实施例方法包括：发送端向接收端发送初始数据包；若满足第一条件,发送端向接收端重新发送初始数据包中的系统信息。通过第一条件来选择是否重新发送系统信息,避免了接收端在未正确接收系统信息的情况下,持续接收发送端发送的冗余信息带来的资源浪费。(The embodiment of the application discloses a data processing method which can be applied to a wireless communication system or device-to-device D2D communication and the like. The method in the embodiment of the application comprises the following steps: a sending end sends an initial data packet to a receiving end; and if the first condition is met, the sending end resends the system information in the initial data packet to the receiving end. Whether the system information is retransmitted or not is selected according to the first condition, so that resource waste caused by continuously receiving redundant information sent by the sending end under the condition that the receiving end does not correctly receive the system information is avoided.)

1. A data processing method is applied to an incremental redundancy technology in a hybrid automatic feedback retransmission technology, and comprises the following steps:

sending first control information to a receiving end, wherein the first control information is used for indicating the receiving end to receive an initial data packet;

sending an initial data packet to the receiving end;

and if the first condition is met, retransmitting the system information in the initial data packet to the receiving end.

2. The method of claim 1, wherein the first condition comprises that no feedback information is received from the receiving end in response to the initial data packet.

3. The method of claim 1, wherein the first condition comprises receiving a first request from the receiver, and wherein the first request is used to indicate that the system information is to be retransmitted to the receiver.

4. The method of claim 1, wherein the first condition comprises receiving negative NACK information from the receiving end in response to the initial data packet, and wherein the NACK information satisfies a predetermined condition.

5. The method of claim 4, wherein the predetermined condition comprises that the initial data packet is the initial data packet sent to the receiving end first after an activation period of discontinuous reception by the receiving end begins.

6. The method of claim 4, wherein the predetermined condition comprises scheduling the receiving end to process another data packet, which results in the receiving end being unable to process the initial data packet.

7. The method according to any one of claims 4 to 6, wherein the preset condition comprises that the receiving end is in a low power consumption mode when receiving the initial data packet.

8. A data processing method is applied to an incremental redundancy technology in a hybrid automatic feedback retransmission technology, and comprises the following steps:

receiving first control information, wherein the first control information is used for indicating a receiving end to receive an initial data packet;

determining feedback information of the initial data packet, wherein the feedback information is used for indicating a sending end to resend system information in the initial data packet if a second condition is met;

and receiving the system information.

9. The method of claim 8, further comprising:

and sending the feedback information to the sending end.

10. The method according to claim 8 or 9, wherein the second condition comprises that the sender schedules processing of another data packet resulting in failure to process the initial data packet.

11. The method according to claim 8 or 9, wherein the second condition comprises the receiving end being in a low power consumption mode when receiving the initial data packet.

12. A transmitting end, wherein the transmitting end is applied to an incremental redundancy technique in a hybrid automatic feedback retransmission technique, and the transmitting end includes:

the receiving and sending unit is used for sending first control information to a receiving end, and the first control information is used for indicating the receiving end to receive an initial data packet;

the receiving and sending unit is also used for sending an initial data packet to the receiving end;

and if the first condition is met, the transceiver unit is further configured to resend the system information in the initial data packet to the receiving end.

13. The transmitting end according to claim 12, wherein the first condition includes that no feedback information is received from the receiving end in response to the initial data packet.

14. The transmitting end of claim 12, wherein the first condition comprises receiving a first request from the receiving end, and wherein the first request is used to indicate that the system information is to be retransmitted to the receiving end.

15. The transmitting end according to claim 12, wherein the first condition includes receiving negative NACK information from the receiving end in response to the initial data packet, and the NACK information satisfies a predetermined condition.

16. The sender according to claim 15, wherein the preset condition includes that the initial data packet is an initial data packet sent to the receiver first after an activation period of discontinuous reception by the receiver begins.

17. The transmitting end of claim 15, wherein the predetermined condition includes that the receiving end is scheduled to process another data packet, which results in that the receiving end cannot process the initial data packet.

18. The transmitting end according to any one of claims 15 to 17, wherein the preset condition includes that the receiving end is in a low power consumption mode when receiving the initial data packet.

19. A receiving end, wherein the receiving end is applied to an incremental redundancy technique in a hybrid automatic feedback retransmission technique, and the receiving end comprises:

a transceiver unit, configured to receive first control information, where the first control information is used to instruct the transceiver unit to receive an initial data packet;

the processing unit is used for determining feedback information of the initial data packet, and if a second condition is met, the feedback information is used for indicating the sending end to resend the system information in the initial data packet;

the transceiver unit is further configured to receive the system information.

20. The receiving end of claim 19, wherein the transceiver unit is further configured to send the feedback information to the sending end.

21. The receiver of claim 19 or 20, wherein the second condition comprises that the sender schedules processing of another data packet to result in failure to process the initial data packet.

22. The receiving end according to claim 19 or 20, wherein the second condition comprises that the transceiving unit is in a low power consumption mode when receiving the initial data packet.

23. A transmitting end, comprising:

at least one processor and at least one communication interface;

the at least one communication interface is used for providing data and/or information input/output for the at least one processor;

the at least one processor is configured to process the data and/or information to cause the sender to implement the method of any of claims 1-7.

24. A receiving end, comprising:

at least one processor and at least one communication interface;

the at least one communication interface is used for providing data and/or information input/output for the at least one processor;

the at least one processor is configured to process the data and/or information to enable the receiving end to implement the method of any one of claims 8-11.

25. A computer storage medium having stored therein instructions that, when executed on a computer, cause the computer to perform the method of any one of claims 1 to 11.

26. A computer program product, characterized in that the computer program product, when executed on a computer, causes the computer to perform the method according to any of claims 1 to 11.

Technical Field

The embodiment of the application relates to the field of communication, and in particular relates to a data processing method and related equipment.

Background

In a wireless communication system, in order to improve communication reliability, a hybrid automatic repeat request (HARQ) is generally used, which combines a Forward Error Correction (FEC) with an automatic repeat request (ARQ), and a Media Access Control (MAC) layer packet of a transmitting end is called a Transport Block (TB), and a transport block of an MAC layer is encoded and modulated in a physical layer and then transmitted to an antenna port, and after reaching a receiving end, the MAC layer is demodulated and decoded by a physical layer of the receiving end, and a decoding result is fed back to the transmitting end, and if the receiving end can correctly receive the packet, the receiving end sends an Acknowledgement (ACK) signal to the transmitting end; if the receiving end can not correctly receive the data packet, the receiving end sends a Negative Acknowledgement (NACK) signal to the sending end, and after the sending end receives ACK/NACK fed back by the receiving end, if the NACK is received, the data packet is retransmitted.

One HARQ Retransmission technique is Incremental Redundancy (IR) by transmitting systematic bits and a portion of the Redundancy bits at the first transmission, and transmitting additional Redundancy bits through Retransmission (Retransmission). If the first transmission is not successfully decoded, the channel coding rate can be reduced by retransmitting more redundant bits, thereby increasing the decoding success rate. If the systematic bits of the first transmission plus the redundant bits of the retransmission still cannot be decoded normally, retransmission is performed again. With the increase of retransmission times, redundant bits are accumulated continuously, and the channel coding rate is reduced continuously, so that a better decoding effect can be obtained.

However, if the receiving end does not receive the systematic bits transmitted for the first time, the systematic bits cannot be decoded correctly no matter how many redundant bits are added.

Disclosure of Invention

The embodiment of the application provides a data processing method and related equipment. The method can be applied to a wireless communication system or device-to-device (D2D) communication and the like, and is used for avoiding invalid retransmission caused by the absence of system information.

A first aspect of an embodiment of the present application provides a data processing method, where the method includes: sending first control information to a receiving end, wherein the first control information is used for indicating the receiving end to receive an initial data packet; sending an initial data packet to a receiving end; and if the first condition is met, retransmitting the system information in the initial data packet to the receiving end.

In the embodiment of the application, a sending end sends an initial data packet to a receiving end; and if the first condition is met, the sending end resends the system information in the initial data packet to the receiving end. Whether the system information is retransmitted or not is selected according to the first condition, so that resource waste caused by continuously receiving redundant information sent by the sending end under the condition that the receiving end does not correctly receive the system information is avoided.

Optionally, in a possible implementation manner of the first aspect, the first condition in the above step includes that no feedback information in response to the initial data packet is received from the receiving end.

In this possible implementation manner, the sending end does not receive the response and the feedback information of the initial data packet, the default receiving end does not receive the initial data packet, and the receiving end does not need to send the feedback information, so that resources occupied by the feedback information are saved.

Optionally, in a possible implementation manner of the first aspect, the first condition in the foregoing step includes receiving a first request from the receiving end, where the first request is used to instruct the receiving end to resend the system information.

In this possible implementation manner, by receiving the retransmitted feedback information, the sending end makes it more clear that the receiving end does not receive the initial data packet, and avoids invalid retransmission caused by no system information all the time.

Optionally, in a possible implementation manner of the first aspect, the first condition in the above step includes receiving, from the receiving end, negative NACK information in response to the initial data packet, where the NACK information satisfies a preset condition.

In the possible implementation mode, the format of the NACK information is not changed, the sending end can identify whether the receiving end receives the initial data packet or not through preset conditions, and if the receiving end does not receive the initial data packet, the sending end retransmits redundant information in the initial data packet, so that invalid retransmission caused by the fact that system information does not exist all the time is avoided.

Optionally, in a possible implementation manner of the first aspect, the preset condition in the above step includes that the initial data packet is the first initial data packet sent to the receiving end after an activation period of discontinuous reception by the receiving end begins.

In the possible implementation mode, the preset condition is limited, and the realizability of the scheme is improved.

Optionally, in a possible implementation manner of the first aspect, the preset condition in the foregoing step includes that the receiving end is scheduled to process another data packet, so that the receiving end cannot process the initial data packet.

In the possible implementation mode, the preset condition is limited, and the realizability of the scheme is improved.

Optionally, in a possible implementation manner of the first aspect, the preset condition in the above step includes that the receiving end is in a low power consumption mode when receiving the initial data packet.

In the possible implementation mode, the preset condition is limited, and the realizability of the scheme is improved.

A second aspect of the present embodiment provides a data processing method, where the method includes receiving first control information, where the first control information is used to instruct a receiving end to receive an initial data packet; determining feedback information of the initial data packet, wherein the feedback information is used for indicating the sending end to resend the system information in the initial data packet if a second condition is met; system information is received.

In the embodiment of the application, the receiving end determines the feedback information of the initial data packet, if the second condition is met, the feedback information is used for indicating the sending end to resend the system information in the initial data packet, and the sending end is requested to resend the system information through the second condition, so that resource waste caused by sending redundant information which does not contain the system information by the sending end is avoided.

Optionally, in a possible implementation manner of the second aspect, the step further includes: and sending the feedback information to the sending end.

In the possible implementation mode, the receiving end requests the sending end to resend the system information through the feedback information, and resource waste caused by sending redundant information which does not contain the system information by the sending end is avoided.

Optionally, in a possible implementation manner of the second aspect, the second condition in the above step includes that a channel for receiving the initial data packet is not opened in time.

In the possible implementation mode, a second condition is defined, and the realizability of the scheme is improved.

Optionally, in a possible implementation manner of the second aspect, the second condition in the above step includes that the number of channels opened for receiving the initial data packet is insufficient.

In the possible implementation mode, a second condition is defined, and the realizability of the scheme is improved.

Optionally, in a possible implementation manner of the second aspect, the second condition in the above step includes that the sending end is scheduled to process another data packet, so that the initial data packet cannot be processed.

In the possible implementation mode, a second condition is defined, and the realizability of the scheme is improved.

Optionally, in a possible implementation manner of the second aspect, the second condition in the above step includes that the receiving end is in a low power consumption mode when receiving the initial data packet.

In the possible implementation mode, a second condition is defined, and the realizability of the scheme is improved.

A third aspect of the present application provides a transmitting end, configured to execute the method in the first aspect or any possible implementation manner of the first aspect. In particular, the transmitting end comprises means or unit for performing the method of the first aspect or any possible implementation manner of the first aspect.

A fourth aspect of the present application provides a receiving end configured to perform the method in the second aspect or any possible implementation manner of the second aspect. In particular, the receiving end comprises modules or units for performing the method of the second aspect or any possible implementation manner of the second aspect.

A fifth aspect of the present application provides a transmitting end, which includes at least one processor and at least one communication interface. At least one communication interface for providing data and/or information input/output to at least one processor; the at least one processor is configured to process data and/or information to enable a transmitting end to implement the first aspect or the method in any possible implementation manner of the first aspect.

A sixth aspect of the present application provides a receiving end comprising at least one processor and at least one communication interface. At least one communication interface for providing data and/or information input/output to at least one processor; the at least one processor is configured to process the data and/or information such that the receiving end implements the second aspect or the method in any possible implementation of the second aspect.

A seventh aspect of the present application provides a computer storage medium having stored therein instructions that, when executed on a computer, cause the computer to perform the method of the foregoing first aspect or any possible implementation manner of the first aspect, the second aspect or any possible implementation manner of the second aspect.

An eighth aspect of the present application provides a computer program product which, when executed on a computer, causes the computer to perform the method of the foregoing first aspect or any possible implementation manner of the first aspect, the second aspect or any possible implementation manner of the second aspect.

For technical effects brought by any one of the third, fifth, seventh and eighth aspects or any one of the possible implementation manners, reference may be made to technical effects brought by different possible implementation manners of the first aspect or the first aspect, and details are not described here.

For technical effects brought by any one of the fourth, sixth, seventh and eighth aspects or any one of the possible implementation manners, reference may be made to the technical effects brought by the second aspect or different possible implementation manners of the second aspect, and details are not described here again.

Drawings

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

FIG. 2 is a schematic diagram of retransmission with circular buffer rate matching;

fig. 3 is a schematic diagram of a discontinuous reception cycle of a UE in the embodiment of the present application;

FIG. 4 is a schematic flow chart illustrating a data processing method according to an embodiment of the present application;

FIG. 5 is a diagram illustrating a situation in which a receiving end does not open a channel in time according to an embodiment of the present disclosure;

fig. 6 is a schematic structural diagram of a transmitting end in an embodiment of the present application;

fig. 7 is a schematic structural diagram of a receiving end in the embodiment of the present application;

fig. 8 is another schematic structural diagram of a transmitting end in the embodiment of the present application;

fig. 9 is another schematic structural diagram of a receiving end in the embodiment of the present application.

Detailed Description

The embodiment of the application provides a data processing method and related equipment. The method can be applied to a wireless communication system or device-to-device (D2D) communication and the like, and is used for avoiding invalid retransmission caused by the absence of system information.

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments.

Fig. 1 shows a schematic diagram of a communication system. The communication system may include a network device 101 and terminal devices 102 to 104 connected to the network device 101.

In the embodiment of the present application, only one network device 101 and three terminal devices 102 to 104 are taken as examples for schematic description. In practical applications, the communication system in the embodiment of the present application may have more network devices 101 and terminal devices 102, and one or more terminal devices 102 may also be used. The number of the network devices 101 and the number of the terminal devices 102 are not limited in the embodiment of the present application.

The network device 101 in the embodiment of the present application may be any device having a wireless transceiving function. Including but not limited to: a base station (e.g., a base station in a fifth generation communication system, a base station in a future communication system, etc.), a Radio Remote Unit (RRU), a wireless relay node, a wireless backhaul node, a transmission node (TRP), a wireless controller in a Cloud Radio Access Network (CRAN) scenario, and the like, which are not limited herein.

A terminal device in embodiments of the present application may refer to a device that provides voice and/or data connectivity to a user, a handheld device with wireless connection capability, or other processing device connected to a wireless modem. The terminal devices may be mobile terminals such as mobile telephones (or "cellular" telephones) and computers with mobile terminals, such as portable, pocket, hand-held, computer-included, or vehicle-mounted mobile devices, that exchange language and/or data with the network device. Such as Personal Communication Service (PCS) phones, cordless phones, Session Initiation Protocol (SIP) phones, Wireless Local Loop (WLL) stations, Personal Digital Assistants (PDAs), and the like. A Terminal Device may also be referred to as a system, a Subscriber Unit (Subscriber Unit), a Subscriber Station (Subscriber Station), a Mobile Station (Mobile), a Remote Station (Remote Station), an Access Point (Access Point), a Remote Terminal (Remote Terminal), an Access Terminal (Access Terminal), a User Terminal (User Terminal), a User Agent (User Agent), a User Device (User Device), or a User Equipment (User Equipment). In addition, the terminal device may also be a chip system for implementing the UE function. The embodiments of the present application only take the terminal device as the user equipment UE as an example for description.

The application can be applied to a wireless communication system (when the network device sends data to the terminal device, the network device is a sending end, and the terminal device is a receiving end; when the terminal device sends data to the network device, the network device is a receiving end, and the terminal device is a sending end), and also can be applied to D2D communication (that is, the sending end and the receiving end are different terminal devices), and the like, and specific details are not limited herein. In the following, only the transmitting end is taken as a base station and the receiving end is taken as a terminal for illustration.

The IR combining method in HARQ Retransmission technology is to transmit systematic bits and a part of redundant bits for the first transmission, and to transmit extra redundant bits through Retransmission (Retransmission). If the first transmission is not successfully decoded, the channel coding rate can be reduced by retransmitting more redundant bits, thereby improving the decoding success rate. If the redundant bit added with retransmission still can not be decoded normally, retransmission is carried out again. With the increase of retransmission times, redundant bits are continuously accumulated, and the channel coding rate is continuously reduced, so that better decoding efficiency can be obtained. For example, in 3GPP, a cyclic buffer rate matching method is adopted for retransmission, as shown in fig. 2. Assuming that the coded bit numbers are 0, 1, 2, and …, for example, 4 start point numbers, k0, k1, k2, and k3 are respectively set, and a code block of a certain length from the start point is called a different Redundancy Version (Redundancy Version), that is, a different Redundancy Version RV is used to define the start point of a transmission code block in the code block, and actually transmitted data is bits that can be transmitted at most from the start point corresponding to the start point number corresponding to the Redundancy Version until the transmission of this time. Typically RV-0 is used to denote initial transmission. It can be seen that the normal RV0 transmission, i.e., the first transmission, contains systematic bits and the other transmissions are redundant bits. In the incremental redundancy combining mode, the receiving end needs to have at least the systematic bits carried by the first transmission to be correctly received, and if there are no systematic bits, the receiving end cannot correctly decode no matter how many redundant bits are increased.

The third generation partnership project (3 GPP) standards organization is setting up protocol standards for fifth generation cellular mobile communication systems. Compared with a Long Term Evolution (LTE) system, the NR system supports a larger transmission bandwidth, more transmit/receive antenna arrays, a higher transmission rate, and a more flexible and less-granular scheduling mechanism, and the above characteristics of the NR system provide a wider application range, but greatly increase the power consumption burden of the UE.

In order to reduce the power consumption of the terminal device, a Discontinuous Reception (DRX) mechanism is usually activated to reduce the UE power consumption of the UE in a connected state, and the DRX cycle diagram is mainly characterized as shown in fig. 3:

the basic unit of time in the DRX state is one DRX cycle, and the duration of one DRX cycle is referred to as one DRX cycle 300. A DRX cycle may also be a DRX cycle 300, including a sleep time 301 (also called discontinuous reception OFF, DRX _ OFF) and an awake time 302(ON duration, also called discontinuous reception ON, DRX _ ON, also called active time, active time).

When the DRX cycle 300 is in the sleep time 301, the UE in the sleep mode may completely turn off communication devices (e.g., radio frequency transceiver, baseband processor, etc.) to reduce power consumption. When the DRX cycle 300 is at the wake-up time 302, the UE in the wake-up mode monitors a downlink control channel (PDCCH) and starts an inactivity timer (inactivity timer), and once Downlink Control Information (DCI) is received in the downlink control channel, the UE restarts the inactivity timer to calculate the timing. If the inactivity timer expires, the UE returns to the sleep mode again. Therefore, the receiving channel of the terminal is always opened before the terminal is in sleep in the working period of the terminal equipment, and the power consumption is high. In order to save power consumption of the terminal device, further, the terminal device is divided into PDCCH reception and PDSCH reception, and the terminal device does not open a PDSCH reception channel until it does not detect effective downlink scheduling included therein. The PDSCH reception channel is opened only after detecting that there is a valid downlink schedule for itself. This method has a drawback in that since there is a partial scene of PDSCH transmitted together with PDCCH in time or although PDSCH is transmitted after PDCCH transmission, partial PDSCH is already transmitted before PDCCH detection is completed, so that the transport block tb (transport block) carried on PDSCH indicated by this DCI cannot be received correctly. According to the normal HARQ transmission technology, the terminal does not correctly receive a PDSCH, and feeds back a not correctly received signal NACK (not acknowledgement) to the base station, and after receiving the NACK, the base station knows that the PDSCH is not correctly received, and retransmits the PDSCH. However, the terminal side does not receive the initial transmission of the TB, and the retransmitted data only has an incremental redundancy signal, so that even after multiple retransmissions, the decoding cannot be correctly performed, resulting in packet loss. Usually, the initial data packet may be retransmitted by Radio Link Control (RLC) retransmission, but RLC retransmission may cause an increase of transmission delay on one hand, and additionally, multiple invalid transmissions also reduce transmission efficiency of the system.

The data processing method provided in the embodiment of the present application is used to solve the above-mentioned defects, and the following describes the data processing method in the embodiment of the present application with reference to the network framework of fig. 1:

referring to fig. 4, an embodiment of a data processing method in the embodiment of the present application includes:

in the following, only the transmitting end is taken as a base station, and the receiving end is taken as a UE for example to schematically illustrate.

401. The sending end sends first control information to the receiving end.

The base station sends first control information to the UE, wherein the first control information is used for indicating the UE to receive the initial data packet.

Optionally, the first control information is DCI, and the DCI is used to indicate scheduling information of the PDSCH, time-frequency resources mapped by the PDSCH, and a modulation and coding scheme adopted by an initial data packet (i.e., a transport block TB) carried by the PDSCH.

402. The sending end sends an initial data packet to the receiving end.

The base station transmits an initial data packet to the UE, which includes system information (which may also be referred to as systematic bits).

Optionally, the initial data packet further includes partial redundancy information (which may also be referred to as partial redundancy bits).

Optionally, the initial data packet is a transport block TB, and the TB includes first redundancy version information (i.e., RV0), and the first redundancy version information includes systematic bits.

403. The receiving end determines the feedback information of the initial data packet.

And the UE determines the initial data packet needing to be received according to the first control information.

Optionally, the UE determines a transport block TB required to be received according to the DCI, and attempts to receive the TB on the corresponding PDSCH according to the indication of the DCI.

After determining that the initial data packet needs to be received, the UE may further determine feedback information of the initial data packet.

That is, the UE determines whether the second condition is satisfied, and if the second condition is satisfied, the UE determines that the feedback information is used to instruct the base station to retransmit the system information in the initial data packet (for example, the feedback information may be N bits of information, where N represents a request to retransmit the system information, and N is an integer greater than 0). If the second condition is not satisfied, the UE determines that the feedback information is Acknowledgement (ACK) information or Negative Acknowledgement (NACK) information.

There are two cases according to whether the second condition (e.g., whether the UE can process the PDSCH) is satisfied, which are described below:

the first, satisfying the second condition (i.e., the UE cannot process PDSCH).

The second condition in the embodiment of the present application includes the following cases, which are described separately below.

The first and second conditions include: the receiving end does not open the channel for receiving the initial data packet in time.

There are various situations in which the receiving end does not open the channel for receiving the initial data packet in time, which are illustrated below by way of example:

1. the receiving end does not open the channel in time.

Illustratively, as shown in fig. 5, the receiving end does not open a channel for receiving the initial data packet in time.

For power saving, the UE turns off the channel at the receiving end during the sleep time (i.e. 301 shown in fig. 3) of connected discontinuous reception (C-DRX). The UE opens a channel to receive the PDCCH and then closes the channel by carrying symbols of the PDCCH at the wake-up time of C-DRX (i.e., 302 shown in FIG. 3). And the UE opens the channel only when detecting effective authorization after blind detection and PDCCH analysis. If the demodulation reference signal (DMRS) of the PDSCH is already transmitted (as shown in fig. 5), the UE cannot receive the PDSCH.

2. The receiving end does not open all channels in time.

Illustratively, the UE does not turn on all received channels in time for power saving. Assume that the UE supports a maximum of 4 channels 4 Rx. However, for power saving, the UE uses fewer channels, for example, two channels, i.e., 2Rx reception, during PDCCH detection. And only after the PDSCH scheduled by the sending end is detected through PDCCH analysis, opening all 4 channels. In this case, if the PDSCH is 4-stream data, the UE cannot acquire all 4-stream data, and cannot correctly receive the PDSCH.

In the embodiment of the present application, there are various situations where the receiving end does not open the channel for receiving the initial data packet in time, the two situations are only examples, and the specific situation is not limited here.

The second and third conditions include: the processing resource conflict results in the inability of the receiving end to process the initial data packet.

There are various situations where the receiving end cannot process the initial data packet due to the processing resource conflict, which are described as follows:

1. the receiving end processes the PDSCH of higher priority.

For example, the initial data packet is carried on the first PDSCH, and the UE receives a second PDSCH that is more urgent than the first PDSCH (i.e., the second PDSCH has higher priority than the first PDSCH) while processing the first PDSCH, and then the UE processes the second PDSCH without processing the first PDSCH.

2. The receiving end processes the PDSCH of higher priority.

Illustratively, the base station schedules other UEs to preempt the transmission resources of the first PDSCH. The UE may obtain the indication information that the resource is preempted through a Preemption Indication (PI) issued by the base station. Of course this case the UE may also be unaware. And under the condition that the UE can obtain the indication information that the resource is preempted through PI indication, the UE determines that the second condition is met. And when the UE cannot sense that the resources are preempted, the UE processes the first PDSCH according to the condition that the UE can process the first PDSCH.

In the embodiment of the present application, there are various situations where the receiving end cannot process the initial data packet due to the processing resource conflict, the above two situations are merely examples, and the specific examples are not limited herein.

In the embodiment of the present application, the second condition has a plurality of cases, the two cases are only examples, and are not limited herein.

Second, the second condition is not satisfied (i.e., the UE is able to process the PDSCH).

The UE can handle PDSCH divided into two cases, UE correctly receiving PDSCH and UE incorrectly receiving PDSCH.

If the UE can process the PDSCH, the UE demodulates and decodes the PDSCH according to the normal PDSCH receiving process, and determines the feedback information of the initial data packet according to the decoding result. If the decoding is correct, the UE determines that the feedback information of the initial data packet is ACK information; and if the decoding cannot be correctly carried out, the UE determines the feedback information of the initial data packet as NACK information.

After the UE detects the valid grant, before the last symbol of the PDSCH corresponding to the initial data packet ends, there are at least 1 symbol of the DMRS of the PDSCH.

After the UE detects the effective authorization, before the end of the last symbol of the PDSCH corresponding to the initial data packet, the UE has at least 1 column of DMRS of the PDSCH, and after the effective authorization is detected, before the end of the last symbol of the PDSCH corresponding to the initial data packet, the UE has at least L symbols of the PDSCH, wherein L is more than or equal to 1. Due to the presence of DMRS, and the missing data may be considered to be sufficiently small, the UE is considered to be able to handle PDSCH.

Of course, when the UE cannot process the PDSCH, the UE may not transmit the feedback information to the base station.

404. And if the first condition is met, the sending end sends the system information in the initial data packet to the receiving end.

If the UE does not send the feedback information to the base station, the base station may determine whether to send the system information in the initial data packet to the UE again according to the first condition.

The first condition in the embodiment of the present application includes the following cases, which are described separately below.

The first condition comprises the following steps: the feedback information is NACK information and meets the preset condition.

The base station may recognize whether the feedback information is NACK information or ACK information according to a predefined rule or an identification in the feedback information.

The preset conditions in the embodiments of the present application include the following various cases.

1. The feedback information is corresponding to the initial data packet. Specifically, the base station may identify whether the feedback information is the feedback information corresponding to the initial data packet pair according to a predefined rule or an identifier in the feedback information.

2. The initial data packet is the first initial data packet sent to the UE by the base station after the activation period of discontinuous reception of the UE begins.

3. The scheduling of the base station exceeds the processing capability of the UE, for example: out-of-order scheduling or resource preemption (as indicated by the second point in step 403, which is not described herein).

4. The base station determines that the UE is in a low power consumption operating mode.

The second condition comprises the following steps: the base station receives feedback information sent by the UE, where the feedback information is used to instruct the base station to retransmit the system information in the initial data packet (for example, the feedback information may be N bits of information, where N represents a request for retransmission of the system information, and N is an integer greater than 0).

The third condition comprises: the base station does not receive the feedback information for the initial data packet sent by the UE.

After the base station sends the initial data packet to the UE, the information sent by the UE is not received, or the UE does not receive the information for feeding back the initial data packet. The base station retransmits the system information in the initial data packet to the UE.

Optionally, the HARQ feedback information of the initial data packet scheduled by the base station is a separate codebook and is not multiplexed with other HARQ feedback information and uplink feedback information. The method and the device avoid the situation that the whole codebook or the whole uplink information is lost because the UE does not send the feedback information if the codebook of the HARQ comprises the feedback information of a plurality of PDSCHs or the HARQ feedback and other uplink information are fed back together.

And if the first condition is met, the base station retransmits the system information in the initial data packet to the UE. Of course, the base station may also retransmit the system information in the initial data packet and the redundancy information to the UE, where the redundancy information may be the same as or different from the redundancy information in the initial data packet, and is not limited herein.

Optionally, after the base station retransmits the system information in the initial data packet to the UE, the retransmission counter of the HARQ may be cleared.

Alternatively, after the base station retransmits the system information in the initial data packet to the UE, the redundancy version RV indication may be set to 0, and the transmission is recorded on the retransmission counter of HARQ.

If the first condition is not met, the base station receives NACK information (NACK information not meeting the preset condition) or ACK information sent by the UE. And if the NACK information does not meet the preset condition, the base station sends redundant bits to the UE, and if the ACK information is the NACK information, the base station does not send the redundant bits and the system bits to the UE.

In the embodiment of the application, a sending end sends an initial data packet to a receiving end; and if the first condition is met, the sending end resends the system information in the initial data packet to the receiving end. Whether the system information is retransmitted or not is selected according to the first condition, so that resource waste caused by continuously receiving redundant information sent by the sending end under the condition that the receiving end does not correctly receive the system information is avoided.

That is, the sending end can identify whether the receiving end receives the initial data packet or not through the first condition, and send the system information in the initial data packet to the receiving end when identifying that the terminal does not receive the initial data packet, thereby avoiding invalid retransmission without system bits caused by the fact that the sending end cannot judge that the receiving end does not receive the initial data packet.

The above describes the data processing method in the embodiment of the present application, and the following describes a transmitting end in the embodiment of the present application, with reference to fig. 6, an embodiment of the transmitting end in the embodiment of the present application includes:

a transceiving unit 601, configured to send first control information to a receiving end, where the first control information is used to instruct the receiving end to receive an initial data packet;

the transceiving unit 601 is further configured to send an initial data packet to the receiving end;

if the first condition is satisfied, the transceiver 601 is further configured to retransmit the system information in the initial data packet to the receiver.

Optionally, the first condition comprises that no feedback information is received from the receiving end in response to the initial data packet.

Optionally, the first condition includes receiving a first request from the receiving end, the first request indicating that the system information is retransmitted to the receiving end.

Optionally, the first condition includes that negative NACK information in response to the initial data packet is received from the receiving end, and the NACK information satisfies a preset condition.

Optionally, the preset condition includes that the initial data packet is the initial data packet sent to the receiving end first after the activation period of discontinuous reception by the receiving end begins.

Optionally, the predetermined condition includes scheduling the receiving end to process another data packet, so that the receiving end cannot process the initial data packet.

Optionally, the preset condition includes that the receiving end is in a low power consumption mode when receiving the initial data packet.

In this embodiment, operations performed by each unit in the transmitting end are similar to those described in the embodiment shown in fig. 4, and are not described again here.

In this embodiment, the transceiver 601 sends an initial data packet to the receiver; if the first condition is satisfied, the transceiver 601 retransmits the system information in the initial data packet to the receiver. Whether to resend the system information is selected according to the first condition, so that resource waste caused by continuously receiving redundant information sent by the transceiver unit 601 under the condition that the receiving end does not correctly receive the system information is avoided.

Referring to fig. 7, an embodiment of a receiving end in the embodiment of the present application includes:

a transceiver 701, configured to receive first control information, where the first control information is used to instruct the transceiver 701 to receive an initial data packet;

a processing unit 702, configured to determine feedback information of the initial data packet, where the feedback information is used to instruct the sending end to resend the system information in the initial data packet if a second condition is met;

the transceiver 701 is further configured to receive system information.

Optionally, the receiving end further includes:

a transceiver 701, configured to send feedback information to a sending end.

Optionally, the second condition includes that the sender schedules processing of another data packet, resulting in failure to process the initial data packet.

Optionally, the second condition includes the transceiving unit 701 being in a low power mode when receiving the initial data packet.

In this embodiment, the operations performed by the units in the receiving end are similar to those described in the embodiment shown in fig. 4, and are not described again here.

In this embodiment of the application, the processing unit 702 determines the feedback information of the initial data packet, and if the second condition is satisfied, the feedback information is used to instruct the sending end to resend the system information in the initial data packet, and the sending end is requested to resend the system information by using the second condition, thereby avoiding resource waste caused by sending redundant information that does not include the system information by the sending end.

Referring to fig. 8, a transmitting end in this embodiment of the present application is described below, where another embodiment of the transmitting end in this embodiment of the present application includes:

the transmitting end 800 includes at least one processor 801 and at least one communication interface 802. The communication interface 802 is used to provide input/output of data and/or information to the processor 801, which the processor 801 is used to process.

Optionally, the transmitting end 800 further comprises a memory 803, and the processor 801 is coupled to the memory 803 and the communication interface 802. The memory 803 may be volatile storage or persistent storage. The program stored in the memory 803 may include one or more modules, each of which may include a sequence of instructions for the server to operate on. Still further, the processor 801 may be configured to communicate with the memory 803 to execute a series of instruction operations in the memory 803 on the initiator 800.

The initiator 800 may also include at least one power source 804, and/or at least one operating system, such as Windows Server, Mac OS XTM, UnixTM, LinuxTM, FreeBSDTM, etc.

The processor 801 may perform the operations performed by the transmitting end in the embodiment shown in fig. 4, which are not described herein again.

As shown in fig. 9, for convenience of description, only the parts related to the embodiments of the present application are shown, and details of the specific technology are not disclosed, please refer to the method part of the embodiments of the present application. The receiving end may be any terminal device including a mobile phone, a tablet computer, a Personal Digital Assistant (PDA), a point of sale (POS), a vehicle-mounted computer, etc., taking the receiving end as the mobile phone as an example:

fig. 9 is a block diagram illustrating a partial structure of a mobile phone related to a receiving end provided in an embodiment of the present application. Referring to fig. 9, the handset includes: radio Frequency (RF) circuit 910, memory 920, input unit 930, display unit 940, sensor 950, audio circuit 960, wireless fidelity (WiFi) module 970, processor 990, and power supply 990. Those skilled in the art will appreciate that the handset configuration shown in fig. 9 is not intended to be limiting and may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components.

The following describes each component of the mobile phone in detail with reference to fig. 9:

the RF circuit 910 may be used for receiving and transmitting signals during information transmission and reception or during a call, and particularly, for processing downlink information of a base station after receiving the downlink information to the processor 990; in addition, the data for designing uplink is transmitted to the base station. In general, RF circuit 910 includes, but is not limited to, an antenna, at least one Amplifier, a transceiver, a coupler, a Low Noise Amplifier (LNA), a duplexer, and the like. In addition, the RF circuit 910 may also communicate with networks and other devices via wireless communication. The wireless communication may use any communication standard or protocol, including but not limited to Global System for Mobile communication (GSM), General Packet Radio Service (GPRS), Code Division Multiple Access (CDMA), Wideband Code Division Multiple Access (WCDMA), Long Term Evolution (LTE), email, Short Messaging Service (SMS), and the like.

The memory 920 may be used to store software programs and modules, and the processor 990 may execute various functional applications and data processing of the mobile phone by operating the software programs and modules stored in the memory 920. The memory 920 may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application program required by at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the cellular phone, and the like. Further, the memory 920 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.

The input unit 930 may be used to receive input numeric or character information and generate key signal inputs related to user settings and function control of the cellular phone. Specifically, the input unit 930 may include a touch panel 931 and other input devices 932. The touch panel 931, also referred to as a touch screen, may collect a touch operation performed by a user on or near the touch panel 931 (e.g., a user's operation on or near the touch panel 931 using a finger, a stylus, or any other suitable object or accessory), and drive a corresponding connection device according to a preset program. Alternatively, the touch panel 931 may include two parts, a touch detection device and a touch controller. The touch detection device detects the touch direction of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch sensing device, converts the touch information into touch point coordinates, and sends the touch point coordinates to the processor 990, and can receive and execute commands sent by the processor 990. In addition, the touch panel 931 may be implemented by various types, such as a resistive type, a capacitive type, an infrared ray, and a surface acoustic wave. The input unit 930 may include other input devices 932 in addition to the touch panel 931. In particular, other input devices 932 may include, but are not limited to, one or more of a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, a joystick, and the like.

The display unit 940 may be used to display information input by the user or information provided to the user and various menus of the mobile phone. The Display unit 940 may include a Display panel 941, and optionally, the Display panel 941 may be configured in the form of a Liquid Crystal Display (LCD), an Organic Light-Emitting Diode (OLED), or the like. Further, the touch panel 931 can cover the display panel 941, and when the touch panel 931 detects a touch operation on or near the touch panel 931, the touch panel transmits the touch operation to the processor 990 to determine the type of the touch event, and then the processor 990 provides a corresponding visual output on the display panel 941 according to the type of the touch event. Although in fig. 9, the touch panel 931 and the display panel 941 are two independent components to implement the input and output functions of the mobile phone, in some embodiments, the touch panel 931 and the display panel 941 may be integrated to implement the input and output functions of the mobile phone.

The handset may also include at least one sensor 950, such as a light sensor, motion sensor, and other sensors. Specifically, the light sensor may include an ambient light sensor that adjusts the brightness of the display panel 941 according to the brightness of ambient light, and a proximity sensor that turns off the display panel 941 and/or backlight when the mobile phone is moved to the ear. As one of the motion sensors, the accelerometer sensor can detect the magnitude of acceleration in each direction (generally, three axes), can detect the magnitude and direction of gravity when stationary, and can be used for applications of recognizing the posture of a mobile phone (such as horizontal and vertical screen switching, related games, magnetometer posture calibration), vibration recognition related functions (such as pedometer and tapping), and the like; as for other sensors such as a gyroscope, a barometer, a hygrometer, a thermometer, and an infrared sensor, which can be configured on the mobile phone, further description is omitted here.

Audio circuitry 960, speaker 961, microphone 962 may provide an audio interface between a user and a cell phone. The audio circuit 960 may transmit the electrical signal converted from the received audio data to the speaker 961, and convert the electrical signal into a sound signal for output by the speaker 961; on the other hand, the microphone 962 converts the collected sound signal into an electrical signal, converts the electrical signal into audio data after being received by the audio circuit 960, and then processes the audio data output processor 990 to be transmitted to, for example, another cellular phone via the RF circuit 910, or outputs the audio data to the memory 920 for further processing.

WiFi belongs to short-distance wireless transmission technology, and the mobile phone can help a user to receive and send e-mails, browse webpages, access streaming media and the like through the WiFi module 970, and provides wireless broadband Internet access for the user. Although fig. 9 shows a WiFi module 970, it is understood that it does not belong to the essential components of the handset.

The processor 990 is a control center of the mobile phone, connects various parts of the entire mobile phone by using various interfaces and lines, and performs various functions of the mobile phone and processes data by operating or executing software programs and/or modules stored in the memory 920 and calling data stored in the memory 920, thereby integrally monitoring the mobile phone. Optionally, processor 990 may include one or more processing units; preferably, the processor 990 may integrate an application processor, which mainly handles operating systems, user interfaces, application programs, and the like, and a modem processor, which mainly handles wireless communication. It is to be appreciated that the modem processor described above may not be integrated into processor 990.

The handset also includes a power supply 990 (e.g., a battery) for supplying power to the various components, and preferably, the power supply may be logically connected to the processor 990 via a power management system, so that the power management system may manage charging, discharging, and power consumption.

Although not shown, the mobile phone may further include a camera, a bluetooth module, etc., which are not described herein.

In this embodiment, the processor 990 included in the receiving end may perform the functions in the foregoing embodiment shown in fig. 4, which is not described herein again.

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, the above-described division of units is only one type of division of logical functions, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

The integrated unit may be stored in a computer-readable storage medium if it is implemented in the form of a software functional unit and sold or used as a separate product. Based on such understanding, the technical solution of the present application may be substantially implemented or contributed to by the prior art, or all or part of the technical solution may be embodied in a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: 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.