WO2021184384A1

WO2021184384A1 - Feedback information receiving method and device

Info

Publication number: WO2021184384A1
Application number: PCT/CN2020/080513
Authority: WO
Inventors: 向铮铮; 苏宏家; 郭文婷; 卢磊
Original assignee: 华为技术有限公司
Priority date: 2020-03-20
Filing date: 2020-03-20
Publication date: 2021-09-23
Also published as: CN117354902A; CN115088308A; CN115088308B

Abstract

Disclosed in embodiments of the present application are a feedback information receiving method and device, applied to the fields of Internet of vehicles such as V2X, intelligent connected vehicles, assisted driving, intelligent driving, etc. The method comprises: a terminal device obtains resource indication information, the resource indication information being used for indicating time-frequency code information of a physical sidelink feedback channel (PSFCH) resource, wherein the PSFCH is used for feeding back a reception state of a transport block; when a time unit comprising the PSFCH resource is in a sleep period in a discontinuous reception (DRX) period of the terminal device, the terminal device receives the PSFCH on the time unit. Therefore, when the terminal device is in a DRX mode, the receiving efficiency of feedback information can be improved, and unnecessary resource overhead is reduced.

Description

Method and device for receiving feedback information

Technical field

The embodiments of the present application relate to the field of communication technologies, and in particular, to a method and device for receiving feedback information.

Background technique

At present, the 3rd generation partnership project (3GPP) proposes to use discontinuous reception (DRX) technology to reduce the power consumption of terminal devices. A DRX cycle may include one or more on duration (DRX on duration) and one or more sleep duration. The terminal device receives the signal during the on period and does not receive the signal during the sleep period.

In a wireless communication system, both parties of data receiving and sending can use hybrid automatic repeat request (HARQ) technology to improve the reliability of data transmission. For example, the first terminal device receives feedback information sent by the second terminal device on the feedback resource, and the feedback information is used to indicate whether the second terminal device successfully receives the data sent by the first terminal device. If the first terminal device does not receive the feedback information, or learns from the feedback information that the second terminal device fails to receive the data sent by the first terminal device, the first terminal device may retransmit the data to the second terminal device. Among them, the feedback resource is usually periodic, and is configured or pre-configured by the network device in the resource pool where the terminal device is located.

However, due to the separate configuration of the DRX cycle and the feedback resource cycle, it is possible that the feedback resource is located in the dormant period in the DRX cycle. At this time, the terminal device will not receive the signal, resulting in the terminal device being unable to detect the feedback information, causing unnecessary data retransmission, resulting in waste of resources and reducing the efficiency of data transmission.

Summary of the invention

The embodiments of the present application provide a method and device for receiving feedback information, which can be applied to the Internet of Vehicles, such as vehicle-to-everything (V2X) communication, and workshop communication long-term evolution-vehicle (LTE-V) ), workshop communication technology (new radio-vehicle, NR-V) based on next-generation communication, vehicle-to-vehicle (V2V) communication, etc., or can be used in fields such as intelligent driving and intelligent networked vehicles. The embodiments of the present application can realize that the terminal device is in the DRX mode, improving the efficiency of receiving feedback information, and reducing unnecessary resource overhead.

In the first aspect, an embodiment of the present application provides a method for receiving feedback information. The method includes: a terminal device obtains resource indication information, where the resource indication information is used to indicate the time-frequency code information of the PSFCH resource of the physical side feedback channel; where the PSFCH is used To feedback the receiving status of the transport block. When the time unit containing the PSFCH resource is located in the dormant period in the discontinuous reception DRX cycle of the terminal device, the terminal device receives the PSFCH on the time unit.

Among them, the PSFCH resource can be pre-configured according to a certain period or configured in the resource pool where the terminal device is located. The terminal device may receive the configuration information of the PSFCH resource sent by the network device, or obtain the configuration information of the pre-configured PSFCH resource.

The DRX cycle of the terminal device includes a wake-up period and/or a sleep period. During the wake-up period, the terminal device is in the wake-up state and monitors the side link transmission information. During the dormant period, the terminal device is in a dormant state and stops monitoring the side-link transmission information.

Since the PSFCH resource period and the DRX period are separately configured, there is a case where the time unit containing the PSFCH resource is located in the dormant period in the DRX period of the terminal device. At this time, the terminal device can actively enter the awake state and receive PSFCH.

In this way, compared to the prior art, the terminal device stops monitoring during the sleep period of the DRX cycle, which causes the missed reception of the PSFCH, which in turn leads to data retransmission. The technical solution provided by the embodiments of the present application can realize the reception of PSFCH during the sleep period of the DRX cycle of the terminal device, thereby avoiding unnecessary data retransmission, improving data transmission efficiency, and avoiding waste of resources.

In a possible implementation manner, the terminal device receiving the PSFCH on the time unit includes: the terminal device receiving the PSFCH on k1 symbols; where the PSFCH resource occupies the k1 symbols in the time unit, and k1 is a positive integer.

In this way, when a time unit is a time slot, the terminal equipment can receive PSFCH on the symbol containing the PSFCH resource, but not other side link transmission information. For example, a time slot contains 14 symbols, in 14 symbols PSFCH is received on k1 symbols. Guarantee to receive PSFCH and save power as much as possible.

In a possible implementation manner, the method further includes: the terminal device receives the physical side-line shared channel PSSCH and/or the physical side-line control channel PSCCH in a time unit.

Optionally, the time unit including PSFCH resources may also include PSSCH resources and/or PSCCH resources. The terminal device may receive both PSFCH and PSSCH and/or PSCCH on the time unit containing the PSFCH resource.

It should be noted that the terminal device can receive or send the PSFCH on the time unit containing the PSFCH resource, receive or send the PSSCH on the time unit containing the PSSCH resource, and receive or send the PSCCH on the time unit containing the PSCCH resource.

In a possible implementation manner, the time unit contains n symbols, the PSFCH resource occupies k1 symbols in the time unit, and the PSSCH resource and/or PSCCH resource occupies k2 symbols in the time unit, k1+k2<n; n , K1 and k2 are positive integers.

Optionally, when a time unit is a time slot, the resource indication information obtained by the terminal device includes a resource configuration method with a symbol granularity, and the terminal device may perform sidelink transmission with a symbol granularity.

For example, if a slot contains 14 symbols, the following configuration can be made in the 14 symbols. Symbols with symbol numbers 0-9 (1-10 symbols) are configured as symbols containing PSSCH resources, and symbols with symbol number 10 The symbol configuration is a symbol used to provide guard interval and/or automatic gain control. Symbols with symbol numbers 0-2 are configured as symbols containing PSCCH resources, and symbols with symbol numbers 11-12 are configured as symbols containing PSFCH resources. The symbol number 13 is configured as a symbol for providing guard interval and/or automatic gain control. Then n=14, k1=2, and k2=10.

In other words, the terminal device can receive or send the PSFCH on the symbol containing the PSFCH resource, receive or send the PSSCH on the symbol containing the PSSCH resource, and receive or send the PSCCH on the symbol containing the PSCCH resource.

In a possible implementation manner, the terminal device receiving the PSSCH and/or PSCCH on the time unit includes: the terminal device receiving the PSFCH on k1 symbols and receiving the PSSCH and/or PSCCH on k2 symbols.

That is, when a time unit is a time slot, the terminal device can receive PSFCH on symbols containing PSFCH resources, and can also receive PSSCH and/or PSCCH on symbols containing PSSCH and/or PSCCH resources.

In a possible implementation manner, before the terminal device obtains the resource indication information, the method further includes: the terminal device receives the DRX configuration information sent by the network device; or the terminal device obtains the pre-configured DRX configuration information; wherein, the DRX configuration information It includes the configuration information of the on period in the DRX cycle and/or the sleep period in the DRX cycle; the DRX configuration information is used to indicate the side link SL transmission.

Optionally, the terminal device may also receive DRX configuration information sent by other terminal devices.

Optionally, the pre-configured or configured DRX configuration information may be included in the resource pool pre-configuration or configuration information, then the terminal devices in the same resource pool all follow the DRX configuration. Alternatively, the DRX configuration or pre-configuration information may be individually configured or pre-configured for each terminal device, and then each terminal device in the same resource pool may have different DRX configurations. In addition, the turn-on period in the DRX cycle may be uniformly distributed or non-uniformly distributed.

In the second aspect, an embodiment of the present application provides a feedback information receiving method, which is applied to a first terminal device, and the method includes: the first terminal device obtains resource indication information, and the resource indication information is used to indicate the PSFCH resource of the physical side row feedback channel. Time-frequency code information. The first terminal device determines a target time unit for receiving the PSFCH; where the target time unit includes PSFCH resources, and the PSFCH is used to feed back the reception status of the transport block sent by the first terminal device to the second terminal device. When the target time unit is in the dormant period in the discontinuous reception DRX cycle of the first terminal device, the first terminal device receives the PSFCH sent by the second terminal on the target time unit.

It should be noted that not all time units containing PSFCH resources need to receive PSFCH. The PSFCH is used to feed back the receiving status of the transport block. If there is no information that needs to be fed back, it is not necessary to transmit the PSFCH. Then, in the dormant period in the DRX cycle of the sending terminal, the sending terminal can enter the awake state and receive the PSFCH when it needs to receive the PSFCH. When the PSFCH does not need to be received, the sleep state is maintained, which saves power as much as possible.

Optionally, after the first terminal device sends the PSSCH and/or PSCCH to the second terminal device, it determines that the target time unit that needs to receive the PSFCH sent by the second terminal device is determined, and if it is determined that the target time unit that needs to receive the PSFCH is located in the first terminal In the sleep period in the DRX cycle of the device, the first terminal device may only enter the awake state at the target time unit and receive the PSFCH. In other words, the target time unit is a subset of the time unit containing the PSFCH resource.

In a possible implementation manner, the first terminal device receiving the PSFCH on the target time unit includes: the first terminal device receives the PSFCH on k1 symbols; where the PSFCH resource occupies k1 symbols in the target time unit, and k1 Is a positive integer.

In this way, the first terminal device can enter the awake state on a part of the symbols containing the PSFCH resource in the target time unit, and receive the PSFCH, which can not only ensure the reception of the PSFCH, but also further save power.

In a possible implementation manner, the method further includes: the first terminal device receives the first physical side-line shared channel PSSCH and/or the first physical side-line control channel PSCCH in the target time unit.

Optionally, the target time unit including PSFCH resources may also include PSSCH resources and/or PSCCH resources. The terminal equipment can receive not only the PSFCH but also the PSSCH and/or PSCCH in the target time unit containing the PSFCH resource.

In a possible implementation manner, the target time unit contains n symbols, the PSFCH resource occupies k1 symbols in the target time unit, and the PSSCH resource and/or PSCCH resource occupies k2 symbols in the target time unit, k1+k2< n; n, k1 and k2 are positive integers.

That is, when a target time unit is a time slot, the resource indication information obtained by the first terminal device includes a resource configuration method with a symbol granularity, and the first terminal device can perform sidelink transmission with a symbol granularity.

In a possible implementation manner, that the first terminal device receives the first PSSCH and/or the first PSCCH on the target time unit includes: the first terminal device receives the PSFCH on k1 symbols and receives the PSFCH on k2 symbols The first PSSCH and/or the first PSCCH.

In a possible implementation manner, before the first terminal device obtains the resource indication information, the method further includes: the first terminal device sends the second PSSCH and/or the second PSCCH to the second terminal device in the first time unit, The first time unit is not later than the target time unit; wherein, the second PSSCH is used to carry the transmission block sent by the first terminal device to the second terminal device, and the second PSCCH is used to carry the transmission block sent by the first terminal device to the second terminal device. Control signaling.

Wherein, the first time unit is not later than the target time unit includes that the first time unit is earlier than the target time unit, and the first time unit is equal to the target time unit. There is a minimum preset time interval between the time unit for sending the PSSCH and/or PSCCH by the first terminal device to the second terminal device and the time unit for receiving the PSFCH sent by the second terminal device. Among them, the minimum preset time interval may be m time units, and m is an integer greater than or equal to 0. For example, when m=0, the first terminal device sends the PSSCH and/or PSCCH to the second terminal device on part of the symbols of a certain time unit, so that the corresponding PSSCH and/or PSCCH sent above can be received on the same time unit. PSFCH.

In a possible implementation manner, the first terminal device determining the target time unit for receiving the PSFCH includes: the first terminal device determines the candidate time unit set according to the first time unit and the minimum preset time interval; the candidate time unit set The time interval between each candidate time unit in and the first time unit is not less than the minimum preset time interval. The first terminal device determines the target time unit according to the resource indication information and the candidate time unit set; where the target time unit is the smallest time interval between each candidate time unit in the candidate time unit set and the first time unit and contains The time unit of the PSFCH resource.

For example, the first terminal device obtains the minimum preset time interval i. The first terminal device sends the second PSSCH and/or the second PSCCH to the second terminal device on the first time unit x, then the first terminal device obtains the candidate time unit as [x+i, x+i+1, x+ i+2,...], where the candidate time unit includes the (x+i)th time unit and all subsequent time units, and x and i are positive integers. Then, the target time unit is the time unit that contains the PSFCH resource in the candidate time unit and has the smallest time interval from the first time unit x.

Exemplarily, the first terminal device sends the PSSCH and/or PSCCH to the second terminal device in the 0th time unit, assuming that the minimum preset time interval between PSFCH and PSSCH and/or PSCCH is 2, then the first terminal The device can receive PSFCH in the first time unit with PSFCH feedback resource in time unit 0+2, 0+3..., but cannot receive PSFCH in

time unit

0, 0+1, even if

time unit

0, 0+ PSFCH resources exist in 1.

In a possible implementation manner, before the first terminal device obtains the resource indication information, the method further includes: the first terminal device receives the DRX configuration information sent by the network device; or, the first terminal device obtains the pre-configured DRX configuration information ; Wherein, the DRX configuration information includes configuration information of the on period and/or sleep period in the DRX cycle; the DRX configuration information is used to indicate the side link SL transmission.

In addition, the technical effect of the feedback information receiving method described in the second aspect may refer to the technical effect of the feedback information receiving method described in the first aspect, which will not be repeated here.

In a third aspect, an embodiment of the present application provides a feedback information sending method, which is applied to a second terminal device, and the method includes: the second terminal device obtains resource indication information, and the resource indication information is used to indicate the physical side feedback channel PSFCH resource Time-frequency code information. The second terminal device determines a target time unit for sending the PSFCH; where the target time unit includes PSFCH resources, and the PSFCH is used to feed back the reception status of the transport block sent by the first terminal device to the second terminal device. The second terminal device sends the PSFCH to the first terminal device in the target time unit; the target time unit is located in the dormant period in the DRX cycle of the first terminal device.

In a possible implementation manner, the second terminal device sending the PSFCH on the target time unit includes: the second terminal device sending the PSFCH on k1 symbols; where the PSFCH resource occupies k1 symbols in the target time unit, and k1 Is a positive integer.

In a possible implementation manner, the method further includes: the second terminal device sends the first physical side-line shared channel PSSCH and/or the first physical side-line control channel PSCCH on the target time unit.

In a possible implementation manner, the second terminal device sending the first PSSCH and/or the first PSCCH on the target time unit includes: the second terminal device sending the PSFCH on k1 symbols and sending it on k2 symbols The first PSSCH and/or the first PSCCH, and the target receiving end of the first PSSCH and/or the first PSCCH may be the first terminal device or other terminal devices.

In a possible implementation manner, before the second terminal device acquires the resource indication information, the method further includes: the second terminal device receives the second PSSCH and/or the second PSCCH sent by the first terminal device in the first time unit , The first time unit is not later than the target time unit; where the second PSSCH is used to carry the transmission block sent by the first terminal device to the second terminal device, and the second PSCCH is used to carry the transmission block sent by the first terminal device to the second terminal device Control signaling.

In a possible implementation manner, the second terminal device determining the target time unit for transmitting the PSFCH includes: the second terminal device determines the candidate time unit set according to the first time unit and the minimum preset time interval; the candidate time unit set The time interval between each candidate time unit in and the first time unit is not less than the minimum preset time interval. The second terminal device determines the target time unit according to the resource indication information and the candidate time unit set; where the target time unit is the smallest time interval between each candidate time unit in the candidate time unit set and the first time unit and contains The time unit of the PSFCH resource.

Optionally, the second terminal device finally determines a target time unit for sending the PSFCH, where the target time unit is a time unit that is closest to the first time unit in the set of candidate time units and contains PSFCH resources.

In addition, the technical effects of the feedback information sending method described in the third aspect may refer to the technical effects of the feedback information receiving method described in the first aspect and the second aspect, and details are not described herein again.

In a fourth aspect, an embodiment of the present application provides a communication device applied to a terminal device. The device may include: a receiving module; wherein the receiving module is used to obtain resource indication information, and the resource indication information is used to indicate a physical side line feedback channel The time-frequency code information of the PSFCH resource; among them, the PSFCH is used to feed back the reception status of the transport block. The receiving module is further configured to receive the PSFCH on the time unit when the time unit containing the PSFCH resource is located in the dormant period in the discontinuous reception DRX cycle of the terminal device.

In a possible implementation manner, the receiving module is further configured to receive PSFCH on k1 symbols; wherein, the PSFCH resource occupies k1 symbols in the time unit, and k1 is a positive integer.

In a possible implementation manner, the receiving module is further configured to receive the physical side-line shared channel PSSCH and/or the physical side-line control channel PSCCH in time units.

In a possible implementation manner, the receiving module is further configured to receive PSFCH on k1 symbols, and receive PSSCH and/or PSCCH on k2 symbols.

In a possible implementation manner, the receiving module is also used to receive DRX configuration information sent by the network device; or to obtain pre-configured DRX configuration information; wherein, the DRX configuration information includes the sleep period and/or DRX in the DRX cycle The configuration information of the open period in the cycle; the DRX configuration information is used to indicate the side link SL transmission.

Optionally, the communication device described in the fourth aspect may further include a sending module, which is used to send a signal to other devices, and the other devices may include, for example, terminal equipment or network equipment. After the communication device described in the fourth aspect sends a signal to other devices through the sending module, it can receive the PSFCH through the receiving module.

It should be noted that the sending module and the receiving module may also be integrated, such as a transceiver module, which is not specifically limited in the embodiment of the present application.

Optionally, the communication device of the fourth aspect may further include a processing module and/or a storage module, and the storage module stores programs or instructions. When the processing module executes the program or instruction, the communication device described in the fourth aspect can execute the feedback information receiving method described in the first aspect.

It should be noted that the communication device described in the fourth aspect may be a terminal device or a chip (system) or other components or components that can be installed in the terminal device, which is not limited in this application.

In addition, the technical effect of the communication device described in the fourth aspect may refer to the technical effect of the feedback information receiving method described in the first aspect, which will not be repeated here.

In a fifth aspect, an embodiment of the present application provides a communication device applied to a first terminal device. The device includes: a receiving module and a processing module; wherein the receiving module is used to obtain resource indication information, and the resource indication information is used to indicate physical The time-frequency code information of the PSFCH resource of the side-line feedback channel. The processing module is used to determine a target time unit for receiving the PSFCH; where the target time unit includes PSFCH resources, and the PSFCH is used to feed back the reception status of the transport block sent by the first terminal device to the second terminal device. The receiving module is further configured to receive the PSFCH on the target time unit when the target time unit is in the dormant period in the discontinuous reception DRX cycle of the first terminal device.

In a possible implementation manner, the receiving module is further configured to receive PSFCH on k1 symbols; wherein, the PSFCH resource occupies k1 symbols in the target time unit, and k1 is a positive integer.

In a possible implementation manner, the receiving module is further configured to receive the first physical side-line shared channel PSSCH and/or the first physical side-line control channel PSCCH in the target time unit.

In a possible implementation manner, the receiving module is further configured to receive the PSFCH on k1 symbols, and receive the first PSSCH and/or the first PSCCH on k2 symbols.

In a possible implementation manner, the device further includes: a sending module; wherein, the sending module is configured to send the second PSSCH and/or the second PSCCH to the second terminal device in the first time unit, and the first time unit Not later than the target time unit; where the second PSSCH is used to carry the transmission block sent by the first terminal device to the second terminal device, and the second PSCCH is used to carry the control signaling sent by the first terminal device to the second terminal device.

In a possible implementation manner, the processing module is further configured to determine a candidate time unit set according to the first time unit and the minimum preset time interval; each candidate time unit in the candidate time unit set is compared with the time of the first time unit The interval is not less than the minimum preset time interval. The processing module is further configured to determine the target time unit according to the resource indication information and the candidate time unit set; wherein the target time unit is the smallest time interval between each candidate time unit in the candidate time unit set and the first time unit Time unit.

In a possible implementation, the receiving module is also used to receive DRX configuration information sent by the network device; or to obtain pre-configured DRX configuration information; wherein, the DRX configuration information includes the on period and/or sleep in the DRX cycle Time period configuration information; DRX configuration information is used to indicate the side link SL transmission.

Optionally, the communication device of the fifth aspect may further include a storage module that stores programs or instructions. When the processing module executes the program or instruction, the communication device described in the fifth aspect can execute the feedback information receiving method described in the second aspect.

It should be noted that the communication device described in the fifth aspect may be the first terminal device or a chip (system) or other components or components that can be installed in the first terminal device, which is not limited in this application.

In addition, the technical effect of the communication device described in the fifth aspect may refer to the technical effect of the feedback information receiving method described in the second aspect, which will not be repeated here.

In a sixth aspect, an embodiment of the present application provides a communication device, which is applied to a second terminal device, and the device includes: a receiving module, a processing module, and a sending module. The receiving module is used to obtain resource indication information, and the resource indication information is used to indicate the time-frequency code information of the PSFCH resource of the physical side row feedback channel. The processing module is used to determine the target time unit for sending the PSFCH; where the target time unit includes the PSFCH resource, and the PSFCH is used to feed back the reception status of the transmission block sent by the first terminal device to the second terminal device. The sending module is configured to send the PSFCH to the first terminal device on the target time unit when the target time unit is in the dormant period in the discontinuous reception DRX cycle of the second terminal device. Wherein, the target time unit is located in the sleep period in the DRX cycle of the first terminal device.

In a possible implementation manner, the sending module is also used to send PSFCH on k1 symbols; wherein, the PSFCH resource occupies k1 symbols in the target time unit, and k1 is a positive integer.

In a possible implementation manner, the sending module is further configured to send the first physical side-line shared channel PSSCH and/or the first physical side-line control channel PSCCH in the target time unit.

In a possible implementation, the sending module is also used to send the PSFCH on k1 symbols, and send the first PSSCH and/or the first PSCCH on k2 symbols.

In a possible implementation, the receiving module is further configured to receive the second PSSCH and/or the second PSCCH sent by the first terminal device on the first time unit, where the first time unit is not later than the target time unit; where , The second PSSCH is used to carry the transmission block sent by the first terminal device to the second terminal device, and the second PSCCH is used to carry the control signaling sent by the first terminal device to the second terminal device.

Optionally, the communication device of the sixth aspect may further include a storage module, and the storage module stores a program or an instruction. When the processing module executes the program or instruction, the communication device described in the sixth aspect can execute the feedback information sending method described in the third aspect.

It should be noted that the communication device described in the sixth aspect may be a second terminal device or a chip (system) or other components or components that can be installed in the second terminal device, which is not limited in this application.

In addition, the technical effect of the communication device described in the sixth aspect may refer to the technical effect of the feedback information sending method described in the third aspect, which will not be repeated here.

In a seventh aspect, an embodiment of the present application provides a communication device, which has the function of implementing the method described in the foregoing first aspect to the third aspect and any one of the possible implementation manners. This function can be realized by hardware, or by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above-mentioned functions.

In an eighth aspect, an embodiment of the present application provides a communication device, including: a processor and a memory. The memory is used to store computer programs. The processor is configured to execute the computer program stored in the memory, so that the communication device executes the method described in the first aspect to the third aspect and any one of the possible implementation manners.

In a ninth aspect, an embodiment of the present application provides a communication device, which includes a processor and an interface circuit. The interface circuit is used to receive code instructions and transmit them to the processor. The processor is configured to run the code instructions to execute the method described in the first aspect to the third aspect and any one of the possible implementation manners.

In a tenth aspect, an embodiment of the present application provides a communication device. The device may be a chip system. The chip system may include a processor and a memory for implementing aspects such as the first to third aspects and any of them. The function of the method described in one possible implementation. The chip system can be composed of chips, and can also include chips and other discrete devices.

In an eleventh aspect, an embodiment of the present application provides a communication device. The device may be a circuit system. The circuit system includes a processing circuit. The method described in the implementation mode.

In a twelfth aspect, an embodiment of the present application provides a readable storage medium that stores instructions in the readable storage medium. When the instructions are executed, the first aspect to the third aspect, and any of them The method described in one possible implementation is implemented.

In a thirteenth aspect, the embodiments of the present application provide a computer program product containing instructions. When the computer program product runs on a computer, the computer can execute the above-mentioned first to third aspects, and any one of them. The method described in one possible implementation.

In a fourteenth aspect, an embodiment of the present application provides a chip, which includes a processor and an interface circuit. The interface circuit is used to receive code instructions and transmit them to the processor. The processor is configured to run the code instructions to execute the method described in the first aspect to the third aspect and any one of the possible implementation manners.

In a fifteenth aspect, an embodiment of the present application provides a communication system including at least two terminal devices, such as a first terminal device and a second terminal device. Wherein, any terminal device can be used to implement the above-mentioned first aspect to the third aspect, and the method described in any one of the possible implementation manners. Optionally, the communication system may also include a network device for sending resource indication information or DRX cycle configuration information to the terminal device.

Description of the drawings

FIG. 1 is a first structural diagram of a communication system provided by an embodiment of this application;

FIG. 2 is a second structural diagram of a communication system provided by an embodiment of this application;

FIG. 3 is a schematic diagram of a DRX mode provided by an embodiment of the application;

FIG. 4 is a schematic diagram 1 of time domain resources provided by an embodiment of this application;

FIG. 5 is a second schematic diagram of time domain resources provided by an embodiment of this application;

Fig. 6 is a first flowchart of a method for receiving feedback information provided by an embodiment of the application;

FIG. 7 is a schematic diagram 1 of an application scenario of the feedback information receiving method provided by an embodiment of the application;

FIG. 8 is a schematic diagram 2 of an application scenario of the feedback information receiving method provided by an embodiment of the application;

FIG. 9 is a third schematic diagram of an application scenario of the feedback information receiving method provided by an embodiment of the application;

FIG. 10 is a second flowchart of a method for receiving feedback information provided by an embodiment of this application;

11 is a schematic diagram 4 of an application scenario of the feedback information receiving method provided by an embodiment of this application;

12 is a schematic diagram 5 of application scenarios of the feedback information receiving method provided by an embodiment of this application;

FIG. 13 is a sixth schematic diagram of an application scenario of the feedback information receiving method provided by an embodiment of this application;

FIG. 14 is a flowchart of a method for sending feedback information provided by an embodiment of the application;

15 is a schematic structural diagram 1 of a communication device provided by an embodiment of this application;

FIG. 16 is a second structural diagram of a communication device provided by an embodiment of this application;

FIG. 17 is a third structural diagram of a communication device provided by an embodiment of this application;

FIG. 18 is a fourth structural diagram of a communication device provided by an embodiment of this application;

FIG. 19 is a fifth structural diagram of a communication device provided by an embodiment of this application.

Detailed ways

The method and device for receiving feedback information provided by the embodiments of the present application will be described in detail below with reference to the accompanying drawings.

The embodiments of the present application may be applicable to systems for communication between terminal devices, such as a vehicle-to-everything (V2X) communication system and a device-to-device (D2D) system. Fig. 1 is a structural diagram 1 of the communication system provided by an embodiment of the application. Referring to Fig. 1, the communication system includes at least two terminal devices, such as a first terminal device and a second terminal device. The sidelink (SL) communicates directly. Optionally, in conjunction with Fig. 1, Fig. 2 is a second structural diagram of a communication system provided by an embodiment of this application. As shown in Fig. 2, the communication system may further include a network device. The network device is used to communicate with the above-mentioned at least two terminal devices or other network devices (only two terminal devices are shown in FIG. 1 and FIG. 2).

Optionally, the terminal device involved in the embodiments of the present application may be a device or a component in a device that realizes the function of the terminal device. For example, the terminal device includes, for example, but not limited to, various handheld devices and vehicle-mounted devices with wireless communication functions. , Wearable devices, computing devices or other processing devices connected to wireless modems; can also include subscriber units, cellular phones, smart phones, wireless data cards, personal digital assistants (personal digital assistants) digital assistant, PDA) computer, tablet computer, handheld device, laptop computer, machine type communication (MTC) terminal, user equipment (UE), Mobile terminals, artificial intelligence (AI) terminals, etc. For another example, the terminal device may be a component in any of the foregoing devices (for example, the terminal device may refer to a chip system in any of the foregoing devices). The terminal equipment involved in the embodiments of the present application may also be an on-board module, on-board module, on-board component, on-board chip, or on-board unit that is built into the vehicle as one or more components or units, and the vehicle passes through the built-in on-board unit. Modules, vehicle-mounted modules, vehicle-mounted components, vehicle-mounted chips, or vehicle-mounted units may implement the method of the present application. In some embodiments of the present application, the terminal device may also be referred to as a terminal, which is described here in a unified manner, and will not be described in detail below.

Network equipment is a device deployed on a wireless access network to provide wireless communication functions. Optionally, network equipment may refer to equipment that communicates with wireless terminals through one or more cells on the air interface of the access network. The device that realizes the function of the network equipment may be a network equipment, or it may be a network equipment that supports the implementation of the network equipment. Functional devices (such as chips in network equipment). Optionally, the network device can perform attribute management on the air interface. The base station equipment can also coordinate the attribute management of the air interface. Network equipment includes various forms of macro base stations, micro base stations (also called small stations), relay equipment such as relay stations or relay equipment chips, transmission reception points (TRP), and evolved network nodes (evolved). Node B, eNB), next-generation network node (g Node B, gNB), evolved Node B (ng-evolved Node B, ng-eNB) connected to the next-generation core network, etc. Or, in a distributed base station scenario, the network equipment can be a baseband unit (BBU) and a remote radio unit (RRU), in a cloud radio access Netowrk (CRAN) scenario Below, the network device can be a baseband pool (BBU pool) and RRU.

The communication system shown in Figure 1 and Figure 2 can be applied to the current Long Term Evolution (LTE) or Advanced Long Term Evolution (LTE Advanced, LTE-A) system, and can also be applied to the 5G system currently under development Or in other communication systems in the future, of course, it can also be applied to a system of LTE and 5G hybrid networking, or in other systems, which is not specifically limited in the embodiment of the present application. Among them, in different networks, the network devices and terminal devices in the above-mentioned communication system may correspond to different names. Those skilled in the art can understand that the names do not limit the devices themselves.

The technical solutions of the embodiments of the present application can be applied to vehicle-to-everything (V2X) communication, long-term evolution-vehicle (LTE-V) technology, and next-generation communication-based vehicle-to-vehicle communication technology (new radio-vehicle, NR-V), vehicle-to-vehicle (V2V) communication, smart/intelligent car, intelligent network driving, unmanned driving, assisted driving (driver assistance, ADAS), intelligent driving, connected driving, car sharing, digital car, unmanned car/driverless car/pilotless car/automobile ), Internet of Vehicles (IoV), self-driving car (autonomous car), cooperative vehicle infrastructure (CVIS), intelligent transportation system (ITS), vehicle communication (vehicular communication) ) And other technical fields.

Hereinafter, some terms in the embodiments of the present application will be explained to facilitate the understanding of those skilled in the art.

1) Discontinuous reception (discontinuous reception, DRX)

In the embodiment of the present application, the terminal device receives the DRX configuration information sent by the network device. Or, the terminal device obtains pre-configured DRX configuration information. Or, the terminal device receives DRX configuration information sent by other terminal devices. The DRX configuration information includes the configuration information of the on period and/or the sleep period in the DRX cycle. Wherein, the pre-configured or configured DRX configuration information may be included in the resource pool pre-configuration or configuration information, then the terminal devices in the same resource pool all follow the DRX configuration. Alternatively, the DRX configuration or pre-configuration information may be individually configured or pre-configured for each terminal device, and then each terminal device in the same resource pool may have different DRX configurations. In addition, the DRX cycle may include one or more turn-on periods. Further, the multiple turn-on periods in the DRX cycle may be uniformly distributed or non-uniformly distributed.

Among them, the terminal device is in the dormant period, which can also be referred to as the terminal device being in an off-duration state. The terminal device can also be referred to as the terminal device being in an on-duration state during the turn-on period.

The DRX configuration information in some embodiments of the present application is used to indicate sidelink (SL) transmission. During the on period in the DRX cycle, the terminal device receives the SL signal. During the sleep period in the DRX cycle, the terminal device stops receiving the SL signal.

Specifically, FIG. 3 is a schematic diagram of a DRX mode provided by an embodiment of the application. As shown in FIG. 3, a terminal device may have multiple DRX cycles in the time domain, and each DRX cycle may include one or more open periods , And one or more sleep periods, and the configuration information of the DRX cycle of different terminal devices may be the same or different, and the terminal device determines the on period and/or the sleep period according to the DRX configuration information. In this way, the terminal device can sleep during the sleep period to reduce power consumption.

2) Feedback resources

The new radio vehicle to everything (NR V2X) system introduces unicast and multicast services, and supports hybrid automatic repeat request,

HARQ) technology. In NR V2X, the physical sidelink feedback channel (PSFCH) is used to carry feedback information, and the physical sidelink shared channel (PSSCH) is used to carry data (data), which is controlled by the physical sidelink The physical sidelink control channel (PSCCH) carries control information, such as sidelink control information (SCI).

The NR V2X system has the following two resource allocation modes:

Mode 1: The network equipment schedules side link resources. Specifically, the network device configures the resource pool used by the terminal device. When a terminal device needs to send data, it can request the network device for the SL resources used to send the data. The network device allocates resources for the terminal on the terminal's resource pool for side-line transmission, and the side-line transmission includes data and/or Control information.

Mode 2: The terminal equipment independently selects the side link resources. Specifically, the terminal device autonomously selects side-line transmission resources from a resource pool configured on the network device side or a pre-configured resource pool.

Among them, the feedback resource (also called PSFCH resource) is generally pre-configured in the terminal device according to a certain period. The terminal device may receive the PSFCH configuration information sent by the network side or receive the PSFCH configuration information sent by other terminal devices or obtain the PSFCH configuration information through pre-configuration information. After the receiving terminal device (hereinafter referred to as the receiving terminal) receives the PSSCH and/or PSCCH, it will send the PSFCH on the time unit containing the PSFCH resource to inform the sending terminal device (hereinafter referred to as the sending terminal) of the transmission block ( The receiving status of transport block (TB), such as feedback acknowledgement (ACK) or feedback negative acknowledgement (NACK).

It should be noted that the terminal device can send the PSSCH and the PSCCH in the same time unit, or can send the PSSCH and the PSCCH respectively in different time units. The embodiment of this application does not specifically limit whether the PSSCH and the PSCCH are sent in the same time unit.

Specifically, as shown in FIG. 4, a resource mapping method, the transmission resource scheduled at one time includes one or consecutive multiple sub-channels (not shown in FIG. 4) in the frequency domain, and each sub-channel is in the frequency domain. The frequency domain includes multiple continuous resource blocks (resource block, RB), such as 10 RBs, and includes one subframe or one slot in the time domain. Take the time slot as an example below.

Exemplarily, FIG. 4 is a schematic diagram 1 of a time domain resource provided by an embodiment of this application. As shown in FIG. 4, the resource pool corresponding to the terminal device includes time unit 0, time unit 1, time unit 2, and time unit 3. Time unit 4, time unit 5, time unit 6, time unit 7,... Among them, the PSFCH resource configuration period is 4, that is, N=4. In other words, there is one time unit containing PSFCH resources for every 4 time units. As shown in FIG. 4, time units such as time unit 3 and time unit 7 include PSFCH resources. During the SL transmission, the terminal device receives or sends the PSFCH in the time unit containing the PSFCH resource in the time domain.

Wherein, the resource pool may include one or more continuous sub-channels in the frequency domain, and one sub-channel may include several consecutive RBs in the frequency domain. A time unit can include one or more small time units in the time domain. The time unit can consist of a slot, a mini-slot, a subframe, and a radio frame. , Transmission time interval (TTI) and other time units composed of multiple possible time granularities. It should be understood that the embodiment of the present application does not specifically limit the bandwidth of the time unit, and the number of sub-channels included in the time unit and the size of each sub-channel can be configured or pre-configured by the network device.

Exemplarily, FIG. 5 is a second schematic diagram of time domain resources provided by an embodiment of this application. As shown in Figure 5, a time unit is a time slot in the time domain. The time slot includes 14 symbols, which are numbered from 0 to 13 from left to right. Among the 14 symbols, any symbol can be The network device is configured or pre-configured as a symbol containing PSFCH resources (also called a PSFCH symbol), for example, a symbol with a symbol number of 11 and a symbol number of 12 is configured as a PSFCH symbol. Similarly, other symbols in the 14 symbols can also be configured as symbols containing other SL transmission resources, such as symbols containing PSSCH resources, symbols containing PSCCH resources, or symbols used for guard interval and/or automatic gain control. The guard interval and/or the symbol of automatic gain control can be used for terminal equipment to perform transceiving conversion or automatic gain control.

FIG. 6 is a first schematic flowchart of a method for receiving feedback information according to an embodiment of the application. The feedback information receiving method is suitable for the communication system shown in FIG. 1 or FIG. 2 to realize the terminal equipment receiving the PSFCH. As shown in Figure 6, the method includes S101 to S102:

S101. The terminal device obtains resource indication information.

Optionally, the terminal device receives resource indication information from the network side device or receives resource indication information from other terminal devices or obtains the resource indication information through pre-configuration information. Wherein, the resource indication information is used to indicate the time-frequency code information of the PSFCH resource, including the period and intra-period offset value of the PSFCH resource in the time domain, the set of RBs occupied in the frequency domain, and the number of available sequences. Among them, the sending terminal will send the transmission block to the receiving terminal, and the receiving terminal will send PSFCH to the sending terminal according to the receiving status of the transmission block. PSFCH is used to feed back the receiving status of the transmission block. The sending end device will determine whether the transmission block needs to be retransmitted according to the PSFCH. .

In some embodiments, as shown in FIG. 4, the terminal device learns the configuration period of the time unit of the PSFCH resource used to transmit the PSFCH through the resource indication information, and according to the resource indication information, is on the time unit where the PSFCH resource is located, such as in the time unit. Unit 3 and time unit 7 send or receive PSFCH.

In still other embodiments, as shown in FIG. 5, the terminal device learns the configuration period of the time unit of the PSFCH resource used to transmit the PSFCH through the resource indication information, and the time unit of the PSFCH resource contains the symbol of the PSFCH resource, such as the

time unit Symbols

11 and 12 in 3 contain the configuration information of the symbols of PSSCH resources and/or PSCCH resources. Among them, the configuration information of the symbol resources in each time unit including the PSFCH resource may be the same or different.

For example, if a slot contains 14 symbols, there may be an SL resource configuration method. Among the 14 symbols, symbols with symbol numbers 0-9 (symbols 1-10) are configured as symbols containing PSSCH resources. Symbols with symbol number 10 are configured as symbols used to provide guard interval and/or automatic gain control, symbols with symbol numbers 0-2 are configured as symbols containing PSCCH resources, and symbols with symbol numbers 11-12 are configured as symbols containing PSFCH The symbol of the resource, the symbol with symbol number 13 is configured as a symbol for providing guard interval and/or automatic gain control.

That is, a time unit contains n symbols, the PSFCH resource occupies k1 symbols in the time unit, and the PSSCH resource and/or PSCCH resource occupies k2 symbols in the time unit, k1+k2<n. n, k1 and k2 are positive integers. In addition, the remaining n-k1-k2 symbols in the time unit are symbols for guard interval and/or automatic gain control.

In view of this, in the time domain, SL transmission between terminal devices can be transmitted at the granularity of time units, or can be transmitted at the granularity of symbols. For example, a terminal device sends or receives PSFCH on a time unit or symbol containing PSFCH resources, sends or receives PSSCH on a time unit or symbol containing PSSCH resources, and sends or receives PSCCH on a time unit or symbol containing PSCCH resources.

It should be noted that, in the embodiment of the present application, among the two terminal devices that send and receive feedback information, the first terminal device sends the PSSCH and/or PSCCH to the second terminal device in a certain time unit, and the second terminal device also PSSCH and/or PSCCH will be received on this time unit. In addition, the first terminal device and the second terminal device have the same PSFCH resource configuration information. In this way, after transmitting the PSSCH and/or PSCCH, the first terminal device as the transmitting end can directly learn when the PSFCH needs to be received according to the resource configuration information.

S102: When the time unit containing the PSFCH resource is located in the dormant period in the DRX cycle of the terminal device, the terminal device receives the PSFCH on the time unit.

Optionally, the terminal device may receive DRX configuration information sent by a network device; or, the terminal device may obtain pre-configured DRX configuration information; or, the terminal device may receive DRX configuration information sent by other terminal devices. Wherein, the DRX configuration information includes the configuration information of the sleep period in the DRX cycle and/or the on period in the DRX cycle. DRX configuration information is used to indicate SL transmission.

Exemplarily, as shown in FIG. 7, the terminal device learns that the PSFCH resource configuration period is 4 time units according to the resource indication information, that is, N=4, and PSFCH is configured on time unit 1, time unit 5, and time unit 9. resource. After the terminal device in the DRX mode learns the DRX configuration information, it can learn the configuration information of the sleep period in the DRX cycle. Among them, the opening period in the DRX cycle is non-uniformly distributed. Further, since the PSFCH resource is configured periodically, the time unit containing the PFSCH resource may be in the dormant period of the DRX cycle. As shown in FIG. 7, the time unit 5 containing the PSFCH resource is located in the dormant period of the DRX cycle of the terminal device. In time unit 5, the terminal device is in a dormant state and stops monitoring SL transmission, which may cause the terminal device to fail to receive the PSFCH and cause unnecessary data retransmission.

In some embodiments, after the terminal device learns the resource indication information, it can learn the time-frequency code information for configuring the PSFCH resource according to the resource indication information. When the time unit containing the PSFCH resource is in the dormant period of the DRX cycle of the terminal device, the terminal device Receiving the PSFCH is achieved by turning on the receiving circuit on the corresponding time unit, etc., which improves the receiving efficiency of the PSFCH and reduces unnecessary resource overhead.

Further, the time unit containing the PSFCH resource may also contain PSSCH resource and/or PSCCH resource, then the terminal device may also realize the reception of PSSCH and/or PSCCH in the time unit.

Exemplarily, in conjunction with FIG. 4, as shown in FIG. 8, when a time unit is a time slot in the time domain, the terminal device receives PSFCH and PSSCH and/or PSCCH on the time unit according to the resource indication information. Further, the time unit includes n symbols, the PSFCH resource occupies k1 symbols in the time unit, and the PSSCH resource and/or PSCCH resource occupies k2 symbols in the time unit. Then, after the terminal device turns on the receiving circuit on the time unit to actively receive the SL transmission information, it receives the PSFCH on k1 symbols, and receives the PSSCH and/or PSCCH on k2 symbols.

In other embodiments, when a time unit is a time slot in the time domain, the terminal device learns that the PSFCH resource occupies k1 symbols in the time unit according to the resource indication, and the terminal device receives the PSFCH on the k1 symbols, and No need to receive other SL information to reduce power consumption.

Exemplarily, in conjunction with FIG. 5, as shown in FIG. 9, the terminal device learns that the time unit 5 is located in the sleep period of the DRX cycle according to the resource indication information, and learns that the time unit 5 contains the symbol position information of the PSFCH resource, then the terminal device PSFCH is received on k1 symbols of the PSFCH resource.

It can be seen that the feedback information receiving method provided by the embodiments of this application can realize that the terminal device in the DRX mode, according to the PSFCH resource configuration information, actively enters the wake-up state during part of the sleep period in the DRX cycle, such as the above k1 Symbol to receive PSFCH. Compared with the prior art, the terminal device maintains the dormant state during the dormant period in the DRX cycle, and cannot receive the data retransmission caused by the PSFCH. The feedback information receiving method provided in the embodiments of the present application can effectively improve the reception efficiency of PSFCH, avoid unnecessary data retransmission, reduce resource overhead, and thereby improve data transmission efficiency.

It is understandable that not all time units containing PSFCH resources need to receive the PSFCH. The PSFCH is used to feed back the reception status of the transport block. If there is no information that needs to be fed back, the PSFCH does not need to be transmitted. Then, during the sleep period in the DRX cycle of the transmitting terminal, the transmitting terminal can enter the awake state and receive the PSFCH when it needs to receive the PSFCH. When the PSFCH does not need to be received, the sleep state is maintained to reduce power consumption.

FIG. 10 is a second schematic flowchart of a method for receiving feedback information provided by an embodiment of this application. The feedback information receiving method is suitable for the communication system shown in FIG. 1 or FIG. 2 to realize the communication between the first terminal device and the second terminal device. The following takes the first terminal device as the transmitting terminal of the transmission block and the second terminal device as the receiving terminal of the transmission block as an example to describe in detail the feedback information receiving method provided in the embodiment of the present application.

As shown in Fig. 10, the method is applied to the first terminal device and includes S201 to S203:

S201. The first terminal device obtains resource indication information, where the resource indication information is used to indicate time-frequency code information of the PSFCH resource.

Please refer to the schematic diagrams of time domain resources shown in Figures 4 and 5. The resource configuration information of the first terminal device and the second terminal device are the same. For the content of the resource indication information obtained by the first terminal device, please refer to the relevant description of step S101, here No longer.

S202. The first terminal device determines a target time unit for receiving the PSFCH.

The target time unit includes PSFCH resources, and the PSFCH is used to feed back the reception status of the transport block sent by the first terminal device to the second terminal device. After the first terminal device sends the PSSCH and/or PSCCH to the second terminal device in certain time units, it will receive the PSFCH sent by the second terminal device in the corresponding time unit containing the PSFCH resource, and this time unit is the target time unit. That is, the target time unit is a subset of the time unit containing the PSFCH resource. In this way, the terminal device may not need to receive PSFCH on all time units that include PSFCH resources in the DRX cycle sleep period, but instead determine the target time unit that needs to receive PSFCH according to the time unit for transmitting PSSCH and/or PSCCH, only at the target time. PSFCH is received on the unit to further save power. It is understandable that the first terminal device will receive the PSFCH only after sending the PSSCH and/or PSCCH, and the first time unit for sending the PSSCH and/or PSCCH should be no later than the target time unit for receiving the PSFCH.

It can be understood that the first time unit is not later than the target time unit includes that the first time unit is earlier than the target time unit, and the first time unit is equal to the target time unit. There is a minimum preset time interval between the time unit for sending the PSSCH and/or PSCCH by the first terminal device to the second terminal device and the time unit for receiving the PSFCH sent by the second terminal device. Among them, the minimum preset time interval may be m time units, and m is an integer greater than or equal to 0. For example, when m=0, the first terminal device sends the PSSCH and/or PSCCH to the second terminal device on part of the symbols of a certain time unit, so that the corresponding PSSCH and/or PSCCH sent above can be received on the same time unit. PSFCH.

Optionally, there is an implicit association between the time unit where the PSFCH is located and the time unit where the PSSCH/PSCCH is located. For example, a fixed minimum preset time interval is used between the time unit where the PSFCH is located and the time unit where the PSSCH and/or PSCCH is located. For example, if the first terminal device sends the PSSCH and/or PSCCH to the second terminal device on the first time unit, the first terminal device may select a candidate time unit whose time interval from the first time unit is greater than or equal to the minimum preset time interval Determine the target time unit in the collection. That is, the time interval between each candidate time unit in the candidate time unit and the first time unit is not less than the minimum preset time interval. Wherein, the minimum preset time interval is a pre-configured time interval, and the method for obtaining the minimum preset time interval can be referred to the prior art, which will not be repeated in this embodiment of the present application.

After that, the first terminal device may determine the target time unit in the candidate time unit set according to the resource indication information. Wherein, the target time unit is a time unit that has the smallest time interval between each candidate time unit and the first time unit in the candidate time unit set and contains PSFCH resources.

Further, the target time unit is in the time domain, the time interval between the candidate time unit set and the first time unit is the smallest and contains the PSFCH resource. Wherein, the time unit containing the PSFCH resource is a time unit configured by the network device or configured by other terminals or pre-configured to contain the PSFCH resource, that is, the target time unit is a subset of the time unit containing the PSFCH resource.

For example, the first terminal device obtains the minimum preset time interval i. The first terminal device sends the second PSSCH and/or the second PSCCH to the second terminal device on the first time unit x. The second PSSCH is used to carry the transmission block sent by the first terminal device to the second terminal device, and the second PSCCH is used to carry the control signaling sent by the first terminal device to the second terminal device. After that, the first terminal device determines that the set of candidate time units for receiving the PSSCH corresponding to the second PSSCH and/or the second PSCCH sent by the second terminal device is [x+i, x+i+1, x+i+ 2,...], where the candidate time unit includes the (x+i)th time unit and all subsequent time units, and x and i are positive integers. Then, the target time unit is the time unit that contains the PSFCH resource in the candidate time unit and has the smallest time interval from the first time unit x.

Exemplarily, referring to FIG. 11, the first terminal device sends the PSSCH and/or PSCCH to the second terminal device on time unit 0, assuming that the minimum preset time interval between PSFCH and PSSCH and/or PSCCH is 2. Then the first terminal device can receive the PSFCH in the first time unit where the PSFCH feedback resource exists in the time unit 0+2, 0+3..., but cannot receive the PSFCH in the

time unit

0, 0+1, even as shown in the figure As shown in 11, there are PSFCH resources in time unit 1.

S203: When the target time unit is located in the dormant period in the DRX cycle of the first terminal device, the first terminal device receives the PSFCH on the target time unit.

Optionally, after the first terminal device determines the target time unit, it may determine whether the target time unit is in the dormant period of the DRX cycle of the first terminal device according to the DRX configuration information. If the target time unit is in the sleep period, the first terminal device actively enters the awake state and receives the PSFCH on the target time unit.

Exemplarily, referring to FIG. 11, assuming that the minimum preset time interval is 2, the first terminal device sends the second PSSCH and/or the second PSCCH to the second terminal device on the first time unit 0, and the PSFCH is received on time unit 2 and after. The second PSSCH is used to carry the transmission block sent by the first terminal device to the second terminal device, and the second PSCCH is used to carry the control signaling sent by the first terminal device to the second terminal device. As shown in FIG. 11, the open periods in the DRX cycle are evenly distributed, where the time unit 5 and the time unit 9 include PSFCH resources, but the time unit 5 and the time unit 9 are located in the sleep period in the DRX cycle of the first terminal device. Based on the feedback information receiving method provided in the above steps S101 to S102, at this time, the first terminal device will enter the awake state on both the time unit 5 and the time unit 9 and receive the PSFCH. In the embodiment of the present application, the first terminal device will only enter the awake state on the target time unit of the time unit 5 and the time unit 9 and receive the PSFCH.

In some embodiments, as shown in FIG. 12, based on FIG. 11, the first terminal device determines that the time unit closest to the first time unit 0 in the time domain and containing the PSFCH resource is time unit 5, then the first terminal device is in Time unit 5 actively enters the wake-up state and receives PSFCH. Further, even if the time unit 9 contains PSFCH resources, but the terminal device determines that the time unit 9 is a non-target time unit, it will continue to maintain the dormant state on the time unit 9 that does not need to receive the PSFCH. Further, the first terminal device may also receive the first PSSCH and/or the first PSCCH in the target time unit (for example, time unit 5). Wherein, the first PSSCH and/or the first PSCCH may be sent by the second terminal or other terminals.

It should be understood that if a time unit is a time slot in the time domain, the target time unit contains n symbols, the PSFCH resource occupies k1 symbols in the target time unit, and the PSSCH resource and/or PSCCH resource occupies the target time unit. k2 symbols. k1+k2<n; n, k1 and k2 are positive integers. Then, if the first terminal device receives the first PSSCH and/or the first PSCCH on the target time unit, it can be understood that the first terminal device receives the PSFCH on k1 symbols, and receives the first PSSCH and/or on k2 symbols. Or the first PSCCH.

In still other embodiments, as shown in FIG. 13, based on FIG. 11, the first terminal device determines that the time unit closest to the first time unit 0 in the time domain and containing the PSFCH resource is time unit 5, and one time unit It is a time slot in the time domain, and the PSFCH resource occupies k1 symbols in the target time unit. Then, the terminal device receives the PSFCH on k1 symbols without having to receive other SL transmission information.

For the rest of the content, reference may be made to the related description of step S102, which will not be repeated here.

It can be seen that the feedback information receiving method provided by the embodiments of the present application can realize that the terminal device in the DRX mode can determine the target time unit that needs to receive the PSFCH according to the PSFCH resource configuration information and the time unit for sending the PSSCH and/or PSCCH. The time unit is located in the dormant period of the DRX cycle, and the PSFCH is actively received on the target time unit. Compared with the prior art, the terminal device cannot receive the data retransmission caused by the PSFCH during the sleep period in the DRX cycle. The feedback information receiving method provided in the embodiments of the present application can effectively improve the reception efficiency of PSFCH, avoid unnecessary data retransmission, reduce resource overhead, and thereby improve data transmission efficiency.

FIG. 14 is a third flowchart of a method for sending feedback information provided by an embodiment of the application. The feedback information sending method is suitable for the communication system shown in FIG. 1 or FIG. 2 to realize the communication between the first terminal device and the second terminal device. The following uses the first terminal device as the sending terminal and the second terminal device as the receiving terminal as an example to describe in detail the feedback information sending method provided in the embodiment of the present application.

As shown in Figure 14, the method is applied to the second terminal device and includes S301 to S303:

S301. The second terminal device obtains resource indication information, where the resource indication information is used to indicate the time-frequency code information of the PSFCH resource.

Please refer to the schematic diagrams of time domain resources shown in Figures 4 and 5. The resource configuration information of the first terminal device and the second terminal device are the same. For the content of the resource indication information obtained by the second terminal device, please refer to the relevant description of step S101, here No longer.

S302. The second terminal device determines a target time unit for sending the PSFCH.

The target time unit includes PSFCH resources, and the PSFCH is used to feed back the reception status of the transport block sent by the first terminal device to the second terminal device.

It should be understood that the time unit when the second terminal device receives the PSSCH and/or PSCCH is the same as the time unit when the first terminal device sends the PSSCH and/or PSCCH to the second terminal device. Then, the second terminal device determines the target time unit for sending the PSFCH according to the time unit of the received PSSCH and/or PSCCH, which should be the same time unit as the target time unit determined by the first terminal device in step S202.

Based on this, the second terminal device can determine the content of the target time unit with reference to the related description of step S202, which will not be repeated here.

S303. The second terminal device sends the PSFCH to the first terminal device in the target time unit.

Wherein, the target time unit is located in the dormant period in the DRX cycle of the first terminal device.

For the rest of the content, reference may be made to the related description of step S203, which will not be repeated here.

It can be seen that the feedback information sending method provided by the embodiments of the present application can realize that the terminal device in the DRX mode can determine the target time unit that needs to receive the PSFCH according to the PSFCH resource configuration information and the time unit for sending the PSSCH and/or PSCCH. The time unit is located in the dormant period of the DRX cycle, and the PSFCH is actively received on the target time unit. Compared with the prior art, the terminal device cannot receive the data retransmission caused by the PSFCH during the sleep period in the DRX cycle. The feedback information receiving method provided in the embodiments of the present application can effectively improve the reception efficiency of PSFCH, avoid unnecessary data retransmission, reduce resource overhead, and thereby improve data transmission efficiency.

It should be noted that both the above-mentioned first terminal device and the above-mentioned second terminal device may include a transceiving function, that is to say, both the first terminal device and the second terminal device may serve as a sending terminal and a receiving terminal. Both the first terminal device and the second terminal device can be used to perform step S101 and step S102 in FIG. 6. For example, the second terminal device may send the PSSCH and/or PSCCH to the first terminal device, and the first terminal device may send the PSFCH to the second terminal device after receiving the PSSCH and/or PSCCH. The second terminal device receives the PSFCH on the time unit containing the PSFCH resource, or receives the PSFCH on the target time unit where it is determined that the PSFCH needs to be received.

The method for receiving feedback information and the method for sending feedback information provided by the embodiments of the present application are described in detail above with reference to FIGS. 3 to 14. The communication device provided by the embodiment of the present application will be described in detail below with reference to FIG. 15, FIG. 16, FIG. 17, FIG. 18, and FIG. 19.

Exemplarily, FIG. 15 is a first structural diagram of a communication device provided by an embodiment of this application. As shown in FIG. 15, the communication device 1500 includes: a receiving module 1501. The communication device 1500 may be used to implement the functions of the terminal equipment involved in the foregoing method embodiments. Wherein, the communication device 1500 may be an independent terminal device, such as a handheld terminal device, a vehicle-mounted terminal device, a vehicle user equipment, etc., or a chip or a chip system included in the terminal device, or the communication device 1500 may be a vehicle-mounted device, such as a built-in device. The on-board module or on-board unit in the car.

In a possible design, when the communication device 1500 shown in FIG. 15 executes the feedback information receiving method embodiment shown in FIG. 6, the receiving module 1501 is used to obtain resource indication information, and the resource indication information is used to indicate the physical side Line feedback channel PSFCH resource time-frequency code information. Among them, PSFCH is used to feed back the receiving status of the transport block.

Optionally, the receiving module 1501 is further configured to receive the PSFCH on the time unit when the time unit containing the PSFCH resource is located in the dormant period in the discontinuous reception DRX cycle of the terminal device.

In a possible implementation manner, the receiving module 1501 is further configured to receive PSFCH on k1 symbols; where the PSFCH resource occupies k1 symbols in the time unit, and k1 is a positive integer.

In a possible implementation manner, the receiving module 1501 is further configured to receive the physical side-line shared channel PSSCH and/or the physical side-line control channel PSCCH in time units.

Exemplarily, the time unit contains n symbols, the PSFCH resource occupies k1 symbols in the time unit, and the PSSCH resource and/or PSCCH resource occupies k2 symbols in the time unit, k1+k2<n; n, k1 and k2 are Positive integer.

In a possible implementation manner, the receiving module 1501 is further configured to receive PSFCH on k1 symbols, and receive PSSCH and/or PSCCH on k2 symbols.

In a possible implementation manner, the receiving module 1501 is also used to receive DRX configuration information sent by a network device; or, to obtain pre-configured DRX configuration information.

Exemplarily, the DRX configuration information includes configuration information of a sleep period in a DRX cycle and/or an on period in a DRX cycle; the DRX configuration information is used to indicate side link SL transmission.

Optionally, the communication device 1500 shown in FIG. 15 may further include a sending module (not shown in FIG. 15), and the sending module is used to send a signal to another communication device, such as another terminal device or a network device. After the communication device 1500 sends a signal to other devices through the sending module, it can receive the PSFCH through the receiving module 1501 described above.

Optionally, the communication device 1500 shown in FIG. 15 may further include a processing module (not shown in FIG. 15) and a storage module (not shown in FIG. 15), and the storage module stores programs or instructions. When the processing module executes the program or instruction, the communication device 1500 shown in FIG. 15 can execute the feedback information receiving method shown in FIG. 6.

For the technical effect of the communication device 1500 shown in FIG. 15, reference may be made to the technical effect of the feedback information receiving method shown in FIG. 6, which will not be repeated here.

The processing modules involved in the communication device 1500 shown in FIG. 15 may be implemented by a processor or processor-related circuit components, and may be a processor or a processing unit. The receiving module 1501 and the sending module may be collectively referred to as a transceiver module, which may be implemented by a transceiver or transceiver-related circuit components, and may be a transceiver or a transceiver unit. The operation and/or function of each module in the communication device 1500 is to implement the corresponding process of the feedback information receiving method shown in FIG. 6, and is not repeated here for brevity.

Exemplarily, FIG. 16 is a second structural diagram of a communication device provided by an embodiment of this application. As shown in FIG. 16, the communication device 1600 includes a receiving module 1601. The communication device 1600 may be used to implement the functions of the terminal equipment involved in the foregoing method embodiments. Wherein, the communication device 1600 may be an independent terminal device, such as a handheld terminal device, a vehicle-mounted terminal device, a vehicle user equipment, etc., or a chip or a chip system included in the terminal device, or the communication device 1600 may be a vehicle-mounted device, such as a built-in device. The on-board module or on-board unit in the car.

In a possible design, when the communication device 1600 shown in FIG. 16 is used as the first terminal device to execute the feedback information receiving method embodiment shown in FIG. 10, the receiving module 1601 is configured to obtain resource indication information. The information is used to indicate the time-frequency code information of the PSFCH resource of the physical side line feedback channel.

The processing module 1602 is used to determine the target time unit for receiving the PSFCH.

Optionally, the target time unit includes PSFCH resources, and the PSFCH is used to feed back the reception status of the transport block sent by the first terminal device to the second terminal device.

The receiving module 1601 is further configured to receive the PSFCH on the target time unit when the target time unit is located in the dormant period in the DRX cycle of the first terminal device.

In a possible implementation manner, the receiving module 1601 is further configured to receive PSFCH on k1 symbols; wherein, the PSFCH resource occupies k1 symbols in the target time unit, and k1 is a positive integer.

In a possible implementation manner, the receiving module 1601 is further configured to receive the first physical side-line shared channel PSSCH and/or the first physical side-line control channel PSCCH in the target time unit.

In a possible implementation manner, the receiving module 1601 is further configured to receive the PSFCH on k1 symbols, and receive the first PSSCH and/or the first PSCCH on k2 symbols.

In a possible implementation manner, the communication device 1600 may further include a sending module 1603.

Optionally, the sending module 1603 is configured to send the second PSSCH and/or the second PSCCH to the second terminal device in the first time unit, and the first time unit is no later than the target time unit.

Exemplarily, the second PSSCH is used to carry the transmission block sent by the first terminal device to the second terminal device, and the second PSCCH is used to carry the control signaling sent by the first terminal device to the second terminal device.

In a possible implementation manner, the processing module 1602 is further configured to determine a set of candidate time units according to the first time unit and the minimum preset time interval.

That is, the time interval between each candidate time unit in the candidate time unit set and the first time unit is not less than the minimum preset time interval.

The processing module 1602 is further configured to determine the target time unit according to the resource indication information and the candidate time unit set.

Optionally, the target time unit is the time unit with the smallest time interval between each candidate time unit in the candidate time unit set and the first time unit.

In a possible implementation manner, the receiving module 1601 is also used to receive DRX configuration information sent by a network device; or, to obtain pre-configured DRX configuration information.

Exemplarily, the DRX configuration information includes the configuration information of the on period and/or the sleep period in the DRX cycle; the DRX configuration information is used to indicate the side link SL transmission.

Optionally, the communication device 1600 shown in FIG. 16 may further include a storage module (not shown in FIG. 16), and the storage module stores programs or instructions. When the processing module 1602 executes the program or instruction, the communication device 1600 shown in FIG. 16 can execute the feedback information receiving method shown in FIG. 10.

For the technical effect of the communication device 1600 shown in FIG. 16, reference may be made to the technical effect of the feedback information receiving method shown in FIG. 6, which will not be repeated here.

The processing module 1602 involved in the communication device 1600 shown in FIG. 16 may be implemented by a processor or processor-related circuit components, and may be a processor or a processing unit. The receiving module 1601 and the sending module 1603 may be collectively referred to as a transceiver module, which may be implemented by a transceiver or transceiver-related circuit components, and may be a transceiver or a transceiver unit. The operation and/or function of each module in the communication device 1600 is to implement the corresponding process of the feedback information receiving method shown in FIG. 10, and is not repeated here for brevity.

Exemplarily, FIG. 17 is the third structural schematic diagram of a communication device provided by an embodiment of this application. As shown in FIG. 17, the communication device 1700 includes: a receiving module 1701. The communication device 1700 may be used to implement the functions of the terminal equipment involved in the foregoing method embodiments. Wherein, the communication device 1700 may be an independent terminal device, such as a handheld terminal device, a vehicle-mounted terminal device, a vehicle user equipment, etc., or a chip or a chip system included in the terminal device, or the communication device 1700 may be a vehicle-mounted device, such as a built-in device. The on-board module or on-board unit in the car.

In a possible design, when the communication apparatus 1700 shown in FIG. 17 is used as the second terminal device to execute the method embodiment shown in FIG. 14, the receiving module 1701 is configured to obtain resource indication information, and the resource indication information is used for Indicates the time-frequency code information of the PSFCH resource of the physical side line feedback channel.

The processing module 1702 is used to determine the target time unit for sending the PSFCH.

The sending module 1703 is configured to send the PSFCH to the first terminal device on the target time unit when the target time unit is in the dormant period in the discontinuous reception DRX cycle of the second terminal device.

Optionally, the target time unit is located in the dormant period in the discontinuous reception DRX cycle of the first terminal device.

In a possible implementation manner, the sending module 1703 is also used to send the PSFCH on k1 symbols; where the PSFCH resource occupies k1 symbols in the target time unit, and k1 is a positive integer.

In a possible implementation manner, the sending module 1703 is further configured to send the first physical side-line shared channel PSSCH and/or the first physical side-line control channel PSCCH in the target time unit.

In a possible implementation manner, the sending module 1703 is further configured to send the PSFCH on k1 symbols, and send the first PSSCH and/or the first PSCCH on k2 symbols.

In a possible implementation manner, the receiving module 1701 is further configured to receive the second PSSCH and/or the second PSCCH sent by the first terminal device on the first time unit, and the first time unit is not later than the target time unit.

In a possible implementation manner, the processing module 1702 is further configured to determine a set of candidate time units according to the first time unit and the minimum preset time interval.

Further, the time interval between each candidate time unit in the candidate time unit set and the first time unit is not less than the minimum preset time interval.

The processing module 1702 is further configured to determine the target time unit according to the resource indication information and the candidate time unit set.

In a possible implementation manner, the receiving module 1701 is further configured to receive DRX configuration information sent by a network device; or, to obtain pre-configured DRX configuration information.

Exemplarily, the DRX configuration information includes the configuration information of the on period and/or the sleep period in the DRX cycle. The DRX configuration information is used to indicate the side link SL transmission.

Optionally, the communication device 1700 shown in FIG. 17 may further include a storage module (not shown in FIG. 17), and the storage module stores programs or instructions. When the processing module 1702 executes the program or instruction, the communication device 1700 shown in FIG. 17 can execute the feedback information sending method shown in FIG. 14.

For the technical effect of the communication device 1700 shown in FIG. 17, reference may be made to the technical effect of the method for sending feedback information shown in FIG. 14, which will not be repeated here.

The processing module 1702 involved in the communication device 1700 shown in FIG. 17 may be implemented by a processor or processor-related circuit components, and may be a processor or a processing unit. The receiving module 1701 and the sending module 1703 may be collectively referred to as a transceiver module, which may be implemented by a transceiver or transceiver-related circuit components, and may be a transceiver or a transceiver unit. The operation and/or function of each module in the communication device 1700 is to implement the corresponding process of the feedback information sending method shown in FIG. 17, and is not repeated here for brevity.

FIG. 18 shows the fourth structural diagram of a communication device provided by an embodiment of this application. The communication device may be the communication device 1500 in FIG. 15, or may be the communication device 1600 in FIG. 16, or may be the communication device 1700 in FIG. 17. As shown in FIG. 18, the communication device includes at least one processor 1801, a communication line 1802, a memory 1803, and at least one communication interface 1804. The memory 1803 may also be included in the processor 1801.

The processor 1801 can be a central processing unit (CPU), other general-purpose processors, digital signal processors (digital signal processors, DSP), application specific integrated circuits (ASICs), ready-made Field programmable gate array (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like.

The communication line 1802 may include a path to transmit information between the aforementioned components.

The communication interface 1804 is used to communicate with other devices. In the embodiments of the present application, the communication interface may be a module, a circuit, a bus, an interface, a transceiver, or other device that can realize a communication function, and is used to communicate with other devices. Optionally, when the communication interface is a transceiver, the transceiver can be an independently set transmitter, which can be used to send information to other devices, and the transceiver can also be an independently set receiver for sending information from other devices. The device receives information. The transceiver may also be a component that integrates the functions of sending and receiving information, and the embodiment of the present application does not limit the specific implementation of the transceiver.

The memory 1803 may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory. Among them, the non-volatile memory can be read-only memory (ROM), programmable read-only memory (programmable ROM, PROM), erasable programmable read-only memory (erasable PROM, EPROM), and electrically available Erase programmable read-only memory (electrically EPROM, EEPROM) or flash memory. The volatile memory may be random access memory (RAM), which is used as an external cache. By way of exemplary but not restrictive description, many forms of RAM are available, such as static random access memory (static RAM, SRAM), dynamic random access memory (dynamic RAM, DRAM), and synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous connection dynamic random access memory (synchlink DRAM, SLDRAM) ) And direct memory bus random access memory (direct rambus RAM, DR RAM) or other magnetic storage devices, or any other that can be used to carry or store desired program codes in the form of instructions or data structures and that can be accessed by a computer Medium, but not limited to this. The memory may exist independently, and is connected to the processor 1801 through a communication line 1802. The memory 1803 may also be integrated with the processor 1801.

Among them, the memory 1803 is used to store computer-executable instructions used to implement the solution of the present application, and the processor 1801 controls the execution. The processor 1801 is configured to execute computer-executable instructions stored in the memory 1803, so as to implement the feedback information receiving method provided in the following embodiments of the present application.

Optionally, the computer execution instructions in the embodiments of the present application may also be referred to as application program codes, instructions, computer programs, or other names, which are not specifically limited in the embodiments of the present application.

In a specific implementation, as an embodiment, the processor 1801 may include one or more CPUs, such as CPU0 and CPU1 in FIG. 18.

In a specific implementation, as an embodiment, the communication device may include multiple processors, such as the processor 1801 and the processor 1805 in FIG. 18. Each of these processors can be a single-core processor or a multi-core processor. The processor here may refer to one or more devices, circuits, and/or processing cores for processing data (for example, computer program instructions).

It should be noted that when the processor is a general-purpose processor, DSP, ASIC, FPGA or other programmable logic device, discrete gate or transistor logic device, or discrete hardware component, the memory (storage module) is integrated in the processor.

It should be noted that the memories described herein are intended to include, but are not limited to, these and any other suitable types of memories.

It should be noted that the aforementioned communication device may be a general-purpose device or a special-purpose device, and the embodiment of the present application does not limit the type of the communication device. The structure illustrated in the embodiment of the present application does not constitute a specific limitation on the communication device. In other embodiments of the present application, the communication device may include more or fewer components than those shown in the figure, or combine certain components, or split certain components, or arrange different components. The illustrated components can be implemented in hardware, software, or a combination of software and hardware.

FIG. 19 shows the fifth structural diagram of a communication device provided by an embodiment of this application. As shown in FIG. 19, the communication device includes at least one processor 1901 and at least one interface circuit 1902. The processor 1901 and the interface circuit 1902 may be interconnected by wires. For example, the interface circuit 1902 can be used to receive signals from other devices. For another example, the interface circuit 1902 may be used to send signals to other devices (such as the processor 1901). Exemplarily, the interface circuit 1902 can read an instruction stored in the memory, and send the instruction to the processor 1901. When the instructions are executed by the processor 1901, the communication device can be made to execute each step in the feedback information receiving method in the foregoing embodiment. Of course, the communication device may also include other discrete devices, which are not specifically limited in the embodiment of the present application.

An embodiment of the present application provides a feedback information receiving system, which includes at least two terminal devices, such as a first terminal device and a second terminal device. Wherein, the first terminal device is a sending terminal, and the second terminal device is a receiving terminal.

Wherein, the first terminal device is used to perform steps S201, S202, and S203 in FIG. 10, and/or other processes used in the technology described herein.

The second terminal device is used to perform steps S301, S302, and S303 in FIG. 14, and/or other processes used in the technology described herein.

Optionally, both the first terminal device and the second terminal device can be used as the sending terminal and the receiving terminal, that is, the first terminal device or the second terminal device can also be used to perform step S101 and step S102 in FIG. 6, And/or other processes used in the techniques described herein.

Optionally, the communication system may also include network equipment, such as a base station, a roadside unit (RSU), etc., for sending resource indication information or DRX cycle configuration information to the terminal equipment.

Among them, all relevant content of the steps involved in the foregoing method embodiments can be cited in the functional description of the corresponding terminal device, which will not be repeated here.

An embodiment of the present application also provides a chip system, including: a processor, the processor is coupled with a memory, the memory is used to store a program or instruction, when the program or instruction is executed by the processor, the The chip system implements the method in any of the foregoing method embodiments.

Optionally, there may be one or more processors in the chip system. The processor can be implemented by hardware or software. When implemented by hardware, the processor may be a logic circuit, an integrated circuit, or the like. When implemented by software, the processor may be a general-purpose processor, which is implemented by reading software codes stored in the memory.

Optionally, there may be one or more memories in the chip system. The memory may be integrated with the processor, or may be provided separately from the processor, which is not limited in this application. Exemplarily, the memory may be a non-transitory processor, such as a read-only memory ROM, which may be integrated with the processor on the same chip, or may be set on different chips. The setting method of the processor is not specifically limited.

Exemplarily, the chip system may be a field programmable gate array (FPGA), an application specific integrated circuit (ASIC), or a system on chip (SoC). It can also be a central processor unit (CPU), a network processor (NP), a digital signal processing circuit (digital signal processor, DSP), or a microcontroller (microcontroller). The controller unit, MCU), may also be a programmable controller (programmable logic device, PLD) or other integrated chips.

It should be understood that each step in the foregoing method embodiments may be completed by an integrated logic circuit of hardware in a processor or instructions in the form of software. The steps of the method disclosed in the embodiments of the present application can be directly embodied as being executed and completed by a hardware processor, or executed and completed by a combination of hardware and software modules in the processor.

The embodiment of the present application also provides a storage medium for storing instructions used by the above-mentioned communication device.

The embodiments of the present application also provide a computer-readable storage medium, the computer-readable storage medium stores computer-readable instructions, and when the computer reads and executes the computer-readable instructions, the computer is caused to execute any of the above-mentioned methods The method in the embodiment.

The embodiments of the present application also provide a computer program product, for example, a computer-readable storage medium, including a program designed to execute the steps executed by the communication device in the foregoing embodiment.

The steps of the method or algorithm described in combination with the disclosure of the present application may be implemented in a hardware manner, or may be implemented in a manner in which a processor executes software instructions. Software instructions can be composed of corresponding software modules, which can be stored in random access memory (RAM), flash memory, read only memory (ROM), erasable programmable read-only memory ( erasable programmable ROM (EPROM), electrically erasable programmable read-only memory (electrically EPROM, EEPROM), register, hard disk, mobile hard disk, CD-ROM, or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor, so that the processor can read information from the storage medium and write information to the storage medium. Of course, the storage medium may also be an integral part of the processor. The processor and the storage medium may be located in an application specific integrated circuit (ASIC).

In the several embodiments provided in this application, it should be understood that the disclosed system, device, and method can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the modules or units is only a logical function division. In actual implementation, there may be other division methods, for example, multiple units or components may be divided. It can be combined or integrated into another system, or some features can be ignored or not implemented. In addition, the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.

In addition, the functional units in the various embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit. The above-mentioned integrated unit can be implemented in the form of hardware or software functional unit.

If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium. Based on this understanding, the technical solution of the present application essentially or the part that contributes to the existing technology or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium , Including several instructions to enable a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor to perform all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage media include: U disk, mobile hard disk, read-only memory (read-only memory, ROM), random access memory (random access memory, RAM), magnetic disks or optical disks and other media that can store program codes. .

The above are only specific implementations of this application, but the protection scope of this application is not limited to this. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed in this application. Should be covered within the scope of protection of this application. Therefore, the protection scope of this application should be subject to the protection scope of the claims.

Claims

A method for receiving feedback information, characterized in that the method includes:

The terminal device obtains resource indication information, where the resource indication information is used to indicate the time-frequency code information of the PSFCH resource of the physical side feedback channel; where the PSFCH is used to feed back the reception status of the transport block;

When the time unit containing the PSFCH resource is located in the dormant period in the discontinuous reception DRX cycle of the terminal device, the terminal device receives the PSFCH on the time unit.
The method according to claim 1, wherein the terminal device receiving the PSFCH on the time unit comprises:

The terminal device receives the PSFCH on k1 symbols; wherein the PSFCH resource occupies k1 symbols in the time unit, and k1 is a positive integer.
The method according to claim 1, wherein the method further comprises:

The terminal device receives the physical side-line shared channel PSSCH and/or the physical side-line control channel PSCCH on the time unit.
The method according to claim 3, wherein the time unit contains n symbols, the PSFCH resource occupies k1 symbols in the time unit, and the PSSCH resource and/or PSCCH resource occupies the time unit The k2 symbols of, k1+k2<n; the n, the k1 and the k2 are positive integers.
The method according to claim 4, wherein the terminal device receiving PSSCH and/or PSCCH on the time unit comprises:

The terminal device receives the PSFCH on the k1 symbols, and receives the PSSCH and/or PSCCH on the k2 symbols.
The method according to any one of claims 1-5, wherein before the terminal device obtains resource indication information, the method further comprises:

The terminal device receives DRX configuration information sent by a network device; or, the terminal device obtains pre-configured DRX configuration information; wherein, the DRX configuration information includes the sleep period in the DRX cycle and/or the DRX cycle The configuration information of the on period in the DRX configuration information; the DRX configuration information is used to indicate the side link SL transmission.
A method for receiving feedback information, characterized in that the method includes:

The first terminal device acquires resource indication information, where the resource indication information is used to indicate the time-frequency code information of the PSFCH resource of the physical side feedback channel;

The first terminal device determines a target time unit for receiving the PSFCH; wherein the target time unit includes the PSFCH resource, and the PSFCH is used to feed back the reception of the transmission block sent by the first terminal device to the second terminal device state;

When the target time unit is in a dormant period in the discontinuous reception DRX cycle of the first terminal device, the first terminal device receives the PSFCH on the target time unit.
The method according to claim 7, wherein the first terminal device receiving the PSFCH on the target time unit comprises:

The first terminal device receives the PSFCH on k1 symbols; wherein the PSFCH resource occupies k1 symbols in the target time unit, and k1 is a positive integer.
The method according to claim 7, wherein the method further comprises:

The first terminal device receives the first physical side-line shared channel PSSCH and/or the first physical side-line control channel PSCCH in the target time unit.
The method according to claim 9, wherein the target time unit includes n symbols, the PSFCH resource occupies k1 symbols in the target time unit, and the PSSCH resource and/or PSCCH resource occupies the target The k2 symbols in the time unit, k1+k2<n; the n, the k1 and the k2 are positive integers.
The method according to claim 10, wherein the first terminal device receiving the first PSSCH and/or the first PSCCH in the target time unit comprises:

The first terminal device receives the PSFCH on the k1 symbols, and receives the first PSSCH and/or the first PSCCH on the k2 symbols.
The method according to any one of claims 7-11, wherein before the first terminal device obtains resource indication information, the method further comprises:

The first terminal device sends a second PSSCH and/or a second PSCCH to the second terminal device in a first time unit, and the first time unit is no later than the target time unit; wherein, the first time unit is not later than the target time unit; The second PSSCH is used to carry the transmission block sent by the first terminal device to the second terminal device, and the second PSCCH is used to carry the control signaling sent by the first terminal device to the second terminal device.
The method according to claim 12, wherein the first terminal device determining the target time unit for receiving the PSFCH comprises:

The first terminal device determines a candidate time unit set according to the first time unit and the minimum preset time interval; the time interval between each candidate time unit in the candidate time unit set and the first time unit is not less than The minimum preset time interval;

The first terminal device determines the target time unit according to the resource indication information and the candidate time unit set; wherein, the target time unit is each candidate time unit in the candidate time unit set and The time unit with the smallest time interval between the first time units.
The method according to any one of claims 7-13, wherein before the first terminal device obtains resource indication information, the method further comprises:

The first terminal device receives DRX configuration information sent by a network device; or, the first terminal device obtains pre-configured DRX configuration information; wherein, the DRX configuration information includes the on period and/or in the DRX cycle Configuration information of the sleep period; the DRX configuration information is used to indicate side link SL transmission.
A method for sending feedback information, characterized in that the method includes:

The second terminal device acquires resource indication information, where the resource indication information is used to indicate the time-frequency code information of the PSFCH resource of the physical side feedback channel;

The second terminal device determines a target time unit for sending the PSFCH; wherein the target time unit includes the PSFCH resource, and the PSFCH is used to feed back the reception of the transmission block sent by the first terminal device to the second terminal device state;

The second terminal device sends the PSFCH to the first terminal device on the target time unit; wherein the target time unit is located in a sleep period in the DRX cycle of the first terminal device.
The method according to claim 15, wherein the second terminal device sending the PSFCH on the target time unit comprises:

The second terminal device sends the PSFCH on k1 symbols; wherein the PSFCH resource occupies k1 symbols in the target time unit, and k1 is a positive integer.
The method according to claim 15, wherein the method further comprises:

The second terminal device transmits the first physical side-line shared channel PSSCH and/or the first physical side-line control channel PSCCH on the target time unit.
The method according to claim 17, wherein the target time unit contains n symbols, the PSFCH resource occupies k1 symbols in the target time unit, and the PSSCH resource and/or PSCCH resource occupies the target The k2 symbols in the time unit, k1+k2<n; the n, the k1 and the k2 are positive integers.
The method according to claim 18, wherein the second terminal device sending the first PSSCH and/or the first PSCCH on the target time unit comprises:

The second terminal device sends the PSFCH on the k1 symbols, and sends the first PSSCH and/or the first PSCCH on the k2 symbols.
The method according to any one of claims 15-19, wherein before the second terminal device obtains resource indication information, the method further comprises:

The second terminal device receives the second PSSCH and/or the second PSCCH sent by the first terminal device on a first time unit, and the first time unit is no later than the target time unit; wherein, the The second PSSCH is used to carry the transmission block sent by the first terminal device to the second terminal device, and the second PSCCH is used to carry the control signaling sent by the first terminal device to the second terminal device .
The method according to claim 20, wherein the second terminal device determining the target time unit for transmitting the PSFCH comprises:

The second terminal device determines a candidate time unit set according to the first time unit and the minimum preset time interval; the time interval between each candidate time unit in the candidate time unit set and the first time unit is not less than The minimum preset time interval;

The second terminal device determines the target time unit according to the resource indication information and the candidate time unit set; wherein, the target time unit is each candidate time unit in the candidate time unit set and The time unit with the smallest time interval between the first time units.
A communication device, characterized in that it is applied to a terminal device, the device includes: a receiving module; wherein,

The receiving module is configured to obtain resource indication information, where the resource indication information is used to indicate the time-frequency code information of the PSFCH resource of the physical side row feedback channel; wherein the PSFCH is used to feed back the receiving state of the transport block;

The receiving module is further configured to receive the PSFCH on the time unit when the time unit containing the PSFCH resource is located in the dormant period in the discontinuous reception DRX cycle of the terminal device.
The device of claim 22, wherein:

The receiving module is further configured to receive the PSFCH on k1 symbols; wherein the PSFCH resource occupies k1 symbols in the time unit, and k1 is a positive integer.
The device of claim 22, wherein:

The receiving module is further configured to receive the physical side-line shared channel PSSCH and/or the physical side-line control channel PSCCH in the time unit.
The apparatus according to claim 24, wherein the time unit comprises n symbols, the PSFCH resource occupies k1 symbols in the time unit, and the PSSCH resource and/or PSCCH resource occupies the time unit The k2 symbols of, k1+k2<n; the n, the k1 and the k2 are positive integers.
The device of claim 25, wherein:

The receiving module is further configured to receive the PSFCH on the k1 symbols, and receive the PSSCH and/or the PSCCH on the k2 symbols.
The device according to any one of claims 22-26, wherein:

The receiving module is further configured to receive DRX configuration information sent by a network device; or obtain pre-configured DRX configuration information; wherein, the DRX configuration information includes the sleep period in the DRX cycle and/or the DRX cycle The configuration information of the on period in the DRX configuration information; the DRX configuration information is used to indicate the side link SL transmission.
A communication device, characterized in that it is applied to a first terminal device, the device includes: a receiving module and a processing module; wherein,

The receiving module is configured to obtain resource indication information, where the resource indication information is used to indicate the time-frequency code information of the PSFCH resource of the physical side row feedback channel;

The processing module is configured to determine a target time unit for receiving the PSFCH; wherein the target time unit includes the PSFCH resource, and the PSFCH is used to feed back the transmission block data sent by the first terminal device to the second terminal device Receiving status

The receiving module is further configured to receive the PSFCH on the target time unit when the target time unit is in a dormant period in the discontinuous reception DRX cycle of the first terminal device.
The device of claim 28, wherein:

The receiving module is further configured to receive the PSFCH on k1 symbols; wherein the PSFCH resource occupies k1 symbols in the target time unit, and k1 is a positive integer.
The device of claim 28, wherein:

The receiving module is further configured to receive the first physical side line shared channel PSSCH and/or the first physical side line control channel PSCCH on the target time unit.
The apparatus according to claim 30, wherein the target time unit comprises n symbols, the PSFCH resource occupies k1 symbols in the target time unit, and PSSCH resources and/or PSCCH resources occupy the target The k2 symbols in the time unit, k1+k2<n; the n, the k1 and the k2 are positive integers.
The device of claim 31, wherein:

The receiving module is further configured to receive the PSFCH on the k1 symbols, and receive the first PSSCH and/or the first PSCCH on the k2 symbols.
The device according to any one of claims 28-32, wherein the device further comprises: a sending module; wherein,

The sending module is configured to send a second PSSCH and/or a second PSCCH to the second terminal device on a first time unit, where the first time unit is no later than the target time unit; wherein, the The second PSSCH is used to carry the transmission block sent by the first terminal device to the second terminal device, and the second PSCCH is used to carry the control signaling sent by the first terminal device to the second terminal device .
The device of claim 33, wherein:

The processing module is further configured to determine a candidate time unit set according to the first time unit and a minimum preset time interval; the time interval between each candidate time unit in the candidate time unit set and the first time unit Not less than the minimum preset time interval;

The processing module is further configured to determine the target time unit according to the resource indication information and the set of candidate time units; wherein, the target time unit is each candidate time unit in the set of candidate time units The time unit with the smallest time interval between the middle and the first time unit.
The device according to any one of claims 28-34, wherein:

The receiving module is further configured to receive DRX configuration information sent by a network device; or obtain pre-configured DRX configuration information; wherein, the DRX configuration information includes the configuration of the on period and/or the sleep period in the DRX cycle Information; the DRX configuration information is used to indicate the side link SL transmission.
A communication device, characterized in that it is applied to a second terminal device, the device includes: a receiving module, a processing module, and a sending module; wherein,

The receiving module is configured to obtain resource indication information, where the resource indication information is used to indicate the time-frequency code information of the PSFCH resource of the physical side row feedback channel;

The processing module is configured to determine a target time unit for sending the PSFCH; wherein the target time unit includes the PSFCH resource, and the PSFCH is used to feed back the transmission block data sent by the first terminal device to the second terminal device Receiving status

The sending module is configured to send the PSFCH to the first terminal device on the target time unit when the target time unit is in the dormant period in the discontinuous reception DRX cycle of the second terminal device ; Wherein, the target time unit is located in the dormant period in the DRX cycle of the first terminal device.
The device of claim 36, wherein:

The sending module is further configured to send the PSFCH on k1 symbols; wherein the PSFCH resource occupies k1 symbols in the target time unit, and k1 is a positive integer.
The device of claim 36, wherein:

The sending module is further configured to send the first physical side-line shared channel PSSCH and/or the first physical side-line control channel PSCCH on the target time unit.
The apparatus according to claim 38, wherein the target time unit comprises n symbols, the PSFCH resource occupies k1 symbols in the target time unit, and PSSCH resources and/or PSCCH resources occupy the target The k2 symbols in the time unit, k1+k2<n; the n, the k1 and the k2 are positive integers.
The device of claim 39, wherein:

The sending module is further configured to send the PSFCH on the k1 symbols, and send the first PSSCH and/or the first PSCCH on the k2 symbols.
The device according to any one of claims 36-40, wherein:

The receiving module is further configured to receive the second PSSCH and/or the second PSCCH sent by the first terminal device on a first time unit, where the first time unit is no later than the target time unit; wherein, The second PSSCH is used to carry the transmission block sent by the first terminal device to the second terminal device, and the second PSCCH is used to carry the control sent by the first terminal device to the second terminal device. Signaling.
The device of claim 41, wherein:

The processing module is further configured to determine a candidate time unit set according to the first time unit and a minimum preset time interval; the time interval between each candidate time unit in the candidate time unit set and the first time unit Not less than the minimum preset time interval;

The processing module is further configured to determine the target time unit according to the resource indication information and the set of candidate time units; wherein, the target time unit is each candidate time unit in the set of candidate time units The time unit with the smallest time interval between the middle and the first time unit.
A communication device, characterized by comprising: a processor and a memory;

The memory is used to store a computer program;

The processor is configured to execute a computer program stored in the memory, so that the communication device executes the method according to any one of claims 1 to 6; or, causes the communication device to execute the method according to claim 1 The method according to any one of claims 7 to 14; or, causing the communication device to execute the method according to any one of claims 15 to 21.
A communication device, characterized by comprising: a processor and an interface circuit;

The interface circuit is used to receive code instructions and transmit them to the processor;

The processor is configured to run the code instructions to execute the method according to any one of claims 1 to 6, or execute the method according to any one of claims 7 to 14, or execute the method as claimed in claim 15. The method described in any one of to 21.
A readable storage medium, characterized in that the readable storage medium stores instructions, and when the instructions are executed, the method according to any one of claims 1 to 6 is realized, or The method according to any one of claims 7 to 14 is implemented, or the method according to any one of claims 15 to 21 is implemented.