CN114402693B

CN114402693B - Wireless communication method and terminal equipment

Info

Publication number: CN114402693B
Application number: CN201980098489.1A
Authority: CN
Inventors: 赵振山; 卢前溪; 林晖闵
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2019-10-18
Filing date: 2019-10-18
Publication date: 2023-09-26
Anticipated expiration: 2039-10-18
Also published as: CN114402693A; WO2021072762A1

Abstract

A method of wireless communication and a terminal device, the method comprising: the first terminal receives first data sent by the second terminal on a first time unit; the first terminal determines that feedback information of the first data is sent to the second terminal equipment on a second time unit, wherein the first time unit is a time unit in a first time unit set, the first time unit set comprises at least one time unit, and feedback information corresponding to data transmitted in the first time unit set is transmitted in the second time unit; and the first terminal determines a candidate resource set for transmitting second data according to the first time unit set, wherein the second data is data to be transmitted by the first terminal.

Description

Wireless communication method and terminal equipment

Technical Field

The embodiment of the application relates to the field of communication, in particular to a wireless communication method and terminal equipment.

Background

The internet of vehicles system is based on a Side Link (SL) transmission technology of long term evolution (LTE D2D) from a vehicle to a vehicle (Long Term Evaluation Device to Device), and, unlike a conventional LTE system in which communication data is received or transmitted through a base station, the internet of vehicles system adopts a terminal-to-terminal direct communication manner, so that the system has higher spectral efficiency and lower transmission delay.

The internet of vehicles technology, i.e. vehicle to any device (Vehicle to Everything, V2X) technology, was standardized in the third generation partnership project (3rd Generation Partnership Project,3GPP) Rel-14, defining two transmission modes: mode a and mode B.

Specifically, in the mode a, the transmission resources of the terminal device are allocated by the base station, and the terminal device sends data on the side link according to the resources allocated by the base station. The base station may allocate resources for single transmission to the terminal device, or may allocate resources for semi-static transmission to the terminal device. In mode B, the terminal device autonomously selects transmission resources on the side uplink resources. Specifically, the terminal equipment acquires an available transmission resource set in a resource pool in a interception mode, and randomly selects one resource from the available transmission resource set to transmit data.

In the internet of vehicles system, in order to improve transmission reliability, a sidestream feedback channel is introduced, and under the condition of sidestream feedback activation, a receiving end terminal can send hybrid automatic repeat request (Hybrid Automatic Repeat reQuest, HARQ) feedback information to a transmitting end terminal so that the transmitting end terminal can determine whether to retransmit or not according to the HARQ feedback information. In this case, how to select resources for mode B is a problem to be solved.

Disclosure of Invention

The embodiment of the application provides a wireless communication method and terminal equipment, which are beneficial to avoiding the problem of resource conflict of data transmission.

In a first aspect, a method of wireless communication is provided, comprising: the first terminal receives first data sent by the second terminal on a first time unit; the first terminal determines that feedback information of the first data is sent to the second terminal equipment on a second time unit, wherein the first time unit is a time unit in a first time unit set, the first time unit set comprises at least one time unit, and feedback information corresponding to data transmitted in the first time unit set is transmitted in the second time unit; and the first terminal determines a candidate resource set for transmitting second data according to the first time unit set, wherein the second data is data to be transmitted by the first terminal.

In a second aspect, there is provided a method of wireless communication, comprising: the first terminal determines to send second data in a third time unit, wherein the second data is to be sent by the first terminal; the first terminal receives first data sent by a second terminal on a first time unit before the third time unit; the first terminal determines that feedback information of the first data is sent to the second terminal equipment on a second time unit, wherein the first time unit is a time unit in a first time unit set, the first time unit set comprises at least one time unit, and feedback information corresponding to data transmitted in the first time unit set is transmitted in the second time unit; and the first terminal determines whether to transmit the second data on the third time unit according to whether the first time unit and the third time unit belong to the same time unit set.

In a third aspect, a terminal device is provided for performing the method of the first aspect or any possible implementation of the first aspect. In particular, the terminal device comprises means for performing the method of the first aspect or any of the possible implementations of the first aspect.

In a fourth aspect, a terminal device is provided for performing the method of the second aspect or any possible implementation of the second aspect. In particular, the terminal device comprises means for performing the method of the second aspect or any of the possible implementations of the second aspect.

In a fifth aspect, there is provided a terminal device comprising: including a processor and a memory. The memory is used for storing a computer program, and the processor is used for calling and running the computer program stored in the memory and executing the method in the first aspect or various implementation manners thereof.

In a sixth aspect, there is provided a terminal device comprising: including a processor and a memory. The memory is for storing a computer program and the processor is for calling and running the computer program stored in the memory for performing the method of the second aspect or implementations thereof described above.

A seventh aspect provides a chip for implementing the method of any one of the first to second aspects or each implementation thereof.

Specifically, the chip includes: a processor for calling and running a computer program from a memory, causing a device on which the chip is mounted to perform the method as in any one of the first to second aspects or implementations thereof described above.

In an eighth aspect, a computer-readable storage medium is provided for storing a computer program that causes a computer to perform the method of any one of the above-described first to second aspects or implementations thereof.

In a ninth aspect, there is provided a computer program product comprising computer program instructions for causing a computer to perform the method of any one of the first to second aspects or implementations thereof.

In a tenth aspect, there is provided a computer program which, when run on a computer, causes the computer to perform the method of any one of the first to second aspects or implementations thereof.

Based on the above technical scheme, when the terminal device has data to be sent, the candidate resource set of the data to be sent can be determined according to the time unit set to which the time unit of the received data which is not fed back yet belongs, which is beneficial to avoiding the resource conflict problem of the feedback information of the data to be sent and the feedback information of the received data.

Drawings

Fig. 1 is a schematic diagram of an application scenario provided in an embodiment of the present application.

Fig. 2 is a schematic diagram of a specific implementation of mode B.

Fig. 3 is a schematic diagram of several communication modes between terminal devices.

Fig. 4 is a schematic diagram showing an example of the sideways feedback.

Fig. 5 is a schematic diagram of a method of wireless communication provided by an embodiment of the present application.

Fig. 6 is a schematic diagram of another method of wireless communication provided by an embodiment of the present application.

Fig. 7 is a schematic block diagram of a terminal device according to an embodiment of the present application.

Fig. 8 is a schematic block diagram of another terminal device according to an embodiment of the present application.

Fig. 9 is a schematic block diagram of a communication device provided in another embodiment of the present application.

Fig. 10 is a schematic block diagram of a chip provided in an embodiment of the present application.

Detailed Description

The following description of the technical solutions according to the embodiments of the present application will be given with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

It should be understood that the technical solution of the embodiment of the present application may be applied to an end-to-end (D2D) communication system, for example, an internet of vehicles system for D2D communication based on long term evolution (Long Term Evolution, LTE), or an NR-V2X system. Unlike the conventional LTE system in which communication data between terminals is received or transmitted through a network device (e.g., a base station), the internet of vehicles system adopts a terminal-to-terminal direct communication manner, and thus has higher spectral efficiency and lower transmission delay.

Alternatively, the communication system based on the internet of vehicles system may be a global system for mobile communications (Global System of Mobile communication, GSM) system, a code division multiple access (Code Division Multiple Access, CDMA) system, a wideband code division multiple access (Wideband Code Division Multiple Access, WCDMA) system, a general packet Radio service (General Packet Radio Service, GPRS), an LTE system, an LTE frequency division duplex (Frequency Division Duplex, FDD) system, an LTE time division duplex (Time Division Duplex, TDD), a universal mobile telecommunications system (Universal Mobile Telecommunication System, UMTS), a worldwide interoperability for microwave access (Worldwide Interoperability for Microwave Access, wiMAX) communication system, a 5G New Radio (NR) system, or the like.

The network device in the embodiment of the present application may be a base station (Base Transceiver Station, BTS) in a GSM system or a CDMA system, a base station (NodeB, NB) in a WCDMA system, an evolved base station (Evolutional Node B, eNB or eNodeB) in an LTE system, or a radio controller in a cloud radio access network (Cloud Radio Access Network, CRAN), or the network device may be a mobile switching center, a relay station, an access point, a vehicle device, a wearable device, a hub, a switch, a bridge, a router, a network side device (gNB) in an NR network, or a network device in a public land mobile network (Public Land Mobile Network, PLMN) of future evolution, etc.

The terminal device in the embodiment of the application can be a terminal device capable of realizing D2D communication. For example, the present application may be a vehicle-mounted terminal device, a terminal device in an LTE system (LTE UE), a terminal device in an NR network (NR UE), or a terminal device in a future evolved public land mobile network (Public Land Mobile Network, PLMN), etc., and the embodiment of the present application is not limited.

The D2D communication technology may be applied to vehicle-to-vehicle (Vehicle to Vehicle, simply "V2V") communication or vehicle-to-device (Vehicle to Everything, V2X) communication. In V2X communications, X may refer broadly to any device having wireless receiving and transmitting capabilities, such as, but not limited to, a slow moving wireless device, a fast moving vehicle device, or a network control node having wireless transmitting and receiving capabilities, etc. It should be understood that the embodiment of the present application is mainly applied to the scenario of V2X communication, but may also be applied to any other D2D communication scenario, and the embodiment of the present application is not limited in any way.

Fig. 1 is a schematic diagram of an application scenario according to an embodiment of the present application. Fig. 1 exemplarily shows one network device and two terminal devices, alternatively, the wireless communication system in the embodiment of the present application may include a plurality of network devices and each network device may include other number of terminal devices within a coverage area of the network device, which is not limited by the embodiment of the present application.

Optionally, the wireless communication system may further include other network entities such as a mobility management entity (Mobile Management Entity, MME), a Serving Gateway (S-GW), a packet data network Gateway (Packet Data Network Gateway, P-GW), or may further include other network entities such as a session management function (Session Management Function, SMF), a unified data management (Unified Data Management, UDM), an authentication server function (Authentication Server Function, AUSF), which is not limited in this embodiment of the present application.

In the internet of vehicles system, the terminal equipment can adopt a mode A and a mode B for communication.

Specifically, the terminal device 121 and the terminal device 122 can communicate through the D2D communication mode, and at the time of D2D communication, the terminal device 121 and the terminal device 122 directly communicate through a D2D link, that is, a Side Link (SL). In mode a, the transmission resources of the terminal device are allocated by the base station, and the terminal device may transmit data on SL according to the resources allocated by the base station. The base station may allocate resources for single transmission to the terminal device, or may allocate resources for semi-static transmission to the terminal device. In mode B, the terminal device autonomously selects transmission resources on SL resources. Specifically, the terminal equipment acquires available transmission resources in the resource pool in a interception mode, or randomly selects one transmission resource from the resource pool. As shown in fig. 2, when data arrives at time n, resource selection is required, specifically, the terminal device may perform resource selection within a resource selection window [ n+t1, n+t2] ms according to a listening result within the past 1 second, where t1< = 4; the selection of the terminal equipment is larger than the processing time delay of the terminal equipment by 20< = T2< = 100, the selection of the terminal equipment by T2 is determined according to the time delay requirement of the service, and the terminal equipment is required to be in the time delay requirement range of the service, for example, if the time delay requirement of the service is 50ms, the terminal equipment is 20< = T2< = 50, or if the time delay requirement of the service is 100ms, the terminal equipment is 20< = T2< = 100.

The process of selecting the resources in the resource selection window by the terminal equipment is as follows:

firstly, the terminal equipment takes all available resources in a resource selection window as a set A, and performs the following elimination operation on the resources in the set A:

1. if the terminal equipment sends data in some subframes in the interception window, and the terminal does not intercept the physical sidelink control channel (Physical Sidelink Control Channel, PSCCH) in the subframes, the resources of the subframes on the corresponding subframes in the resource selection window are removed;

2. if the terminal device listens to the PSCCH in some subframes in the listening window, measuring the reference signal received power (Reference Signal Receiving Power, RSRP) of a physical side shared channel (Physical Sidelink Shared Channel, PSSCH) scheduled by the PSCCH, if the measured RSRP of the PSSCH is higher than the RSRP threshold of a preset PSSCH, and if there is a resource conflict between a reserved resource determined according to control information in the PSCCH and data to be transmitted by the terminal device, removing the reserved resource from the set a, wherein the RSRP threshold may be selected according to priority information carried in the detected PSCCH and the priority of the data to be transmitted by the terminal device.

3. If the number of the remaining resources in the set a is less than 20% of the total number of resources, the terminal device may raise the RSRP threshold by 3dB, and further repeat the foregoing steps 1 and 2 until the number of the remaining resources in the set a is greater than 20% of the total number of resources.

4. The terminal equipment detects signal strength indication (Sidelink Received Signal Strength Indication, S-RSSI) received laterally on the rest resources in the set A, and puts 20% (relative to the number of the resources in the set A) of the resources with the lowest energy into the set B according to the energy level sequence;

5. and the terminal equipment selects one resource from the set B with medium probability to transmit data.

In a New wireless (NR) based vehicle-to-any device (Vehicle to Everything, V2X) system (abbreviated as NR-V2X), a variety of transmission modes can be supported: in the unicast transmission mode, the receiving terminal has only one terminal, and as shown in fig. 3 (a), unicast transmission between UE1 and UE2 is shown; the multicast transmission mode, the receiving terminal is all terminals in a communication group or all terminals in a certain transmission distance, as shown in (b) of fig. 3, UE1, UE2, UE3 and UE4 form a communication group, wherein, UE1 sends data, and other terminal devices in the group are all receiving terminal devices; in the broadcast transmission method, the receiving end may be any terminal, and as shown in fig. 3 (c), UE1 is a transmitting end terminal, and other terminals around the transmitting end terminal may be receiving end terminals.

In the NR-V2X system, in order to improve transmission reliability, a side feedback channel is introduced, for example, for unicast transmission, a transmitting end terminal sends side data (including PSCCH and PSSCH) to a receiving end terminal, the receiving end terminal may send hybrid automatic repeat request (Hybrid Automatic Repeat reQuest, HARQ) feedback information to the transmitting end terminal, and the transmitting end terminal may determine whether retransmission is needed according to the feedback information of the receiving end terminal, where the HARQ feedback information may be carried in the side feedback channel, for example, a physical side feedback channel (Physical Sidelink Feedback Channel, PSFCH).

To reduce the overhead of the PSFCH, one of every N slots is defined to include PSFCH transmission resources, e.g., n=1, 2,4, where N may be preconfigured or network device configured, fig. 4 is a schematic diagram of n=4. Wherein, the PSSCH transmitted in the slots 2,3,4,5 and the corresponding feedback information thereof are transmitted in the slot 7, so that the slot {2,3,4,5} can be regarded as a slot set, and the PSSCH transmitted in the slot set and the corresponding PSFCH thereof can be transmitted in the same slot.

For unicast transmission and active side feedback, if UE1 sends PSSCH to UE2 in slot 2, UE2 needs to send side feedback to UE1 in slot 7, and similarly, if UE2 sends PSSCH to UE1 in slot 3, UE1 needs to send side feedback to UE2 in implementation 7, but because of half duplex limitation, terminal devices can only send data or receive data at the same time on the same carrier, so that transmission collision occurs between UE1 and UE2 in slot 7, in which case, how to perform resource selection for a transmitting terminal to perform data transmission is a problem to be solved.

It should be understood that the above modes a and B are merely exemplary of two transmission modes, and that other transmission modes may be defined. For example, mode 1 and mode 2 are introduced in NR-V2X, where mode 1 indicates that the side uplink transmission resources of the terminal device are allocated by the base station, and the base station may use the mode a and mode 1 to allocate the side uplink transmission resources differently, for example, one may use a dynamic scheduling manner, another may use a semi-static scheduling manner, or a semi-static plus dynamic scheduling manner, and mode 2 indicates that the side uplink transmission resources of the terminal device are selected by the terminal.

It should be understood that the terms "system" and "network" are used interchangeably herein. The term "and/or" is herein merely an association relationship describing an associated object, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

Fig. 5 is a schematic flow chart of a method 200 for wireless communication according to an embodiment of the present application. The method 200 may be performed by a terminal device in the communication system shown in fig. 1, and as shown in fig. 5, the method 200 may include at least part of the following:

S210, the first terminal receives first data sent by the second terminal on a first time unit;

s220, the first terminal determines that feedback information of the first data is sent to the second terminal equipment on a second time unit, wherein the first time unit is a time unit in a first time unit set, the first time unit set comprises at least one time unit, and feedback information corresponding to data transmitted in the first time unit set is transmitted in the second time unit;

and S230, the first terminal determines a candidate resource set for transmitting second data according to the first time unit set, wherein the second data is data to be transmitted by the first terminal.

In the embodiment of the present application, the feedback information of the data transmitted in one or more time units may be transmitted in the same time unit, and then the one or more time units may form the first time unit set, and the feedback information corresponding to the data transmitted in the time units in the first time unit set may be transmitted in the second time unit.

Specifically, the first terminal may receive, at a first time unit in the first time unit set, first data sent by a second terminal, further determine, according to a time of receiving the first data, that feedback information of the first data is transmitted at the second time unit, and if the first terminal has second data to be transmitted, in this case, the first terminal may determine, according to the first time unit set to which the first time unit belongs, a candidate resource set for transmitting the second data, further select, from the candidate resource sets, a target transmission resource, and transmit the second data.

As can be seen from the above description, feedback information corresponding to data transmitted on time units belonging to the same time unit set is transmitted on the same time unit, and due to the limitation of half duplex, that is, a terminal device can only receive data or transmit data at the same time, in order to avoid that feedback information of the first data and feedback information of the second data are transmitted on the same time unit, that is, a first terminal needs to receive feedback information of the second data on the same time unit, and transmit feedback information of the first data, the first terminal may determine, according to the first time unit set, a candidate resource set for transmitting the second data, for example, the first terminal may determine that the candidate resource set does not include transmission resources in the first time unit set, so as to avoid that the first terminal transmits data and receives data on the same time unit.

It should be understood that in the embodiment of the present application, the second data may be data sent to a third terminal, alternatively, the third terminal may be the second terminal, or may also be another terminal, which is not limited in the embodiment of the present application.

It should also be understood that the first data and the second data may be unicast data or multicast data, which is not limited by the embodiment of the present application.

It should be noted that, in the embodiment of the present application, the time unit may be one or more time slots, or may also be one or more time domain symbols, for example, the first time unit may be a first time slot, and the first time unit set may include one or more time slots, where the first time unit set may also be referred to as a first time slot set, and the time unit is taken as an example of a time slot to be described below, but the embodiment of the present application is not limited thereto.

Optionally, in some embodiments of the present application, the S230 may include:

and the first terminal determines the candidate resource set according to the first time unit set and the data priority of the first data and the second data.

When the first terminal receives the first data and has the second data to be sent, the first terminal can perform resource selection according to the data priority (data priority) of the first data and the second data, which is beneficial to ensuring timely and reliable transmission of the data with high priority.

As an embodiment, if the data priority of the first data is higher than the data priority of the second data, the first terminal may determine that the candidate resource set does not include the transmission resource on the time unit in the first time unit set. Further, the first terminal sends feedback information of the first data to the second terminal on a second time unit corresponding to a time unit in the first time unit set, and does not receive feedback information of the second data on the second time unit.

As another embodiment, if the data priority of the first data is lower than the data priority of the second data, the first terminal may determine that the candidate resource set includes transmission resources on the at least one time unit in the first time unit set. Further, the first terminal determines a target transmission resource in the candidate resource set, so that the second data can be sent on the target transmission resource. In this case, the first terminal may receive feedback information of the second data sent by the receiving end of the second data on a second time unit corresponding to a time unit in the first time unit set, and not send feedback information of the first data on the second time unit.

As a further embodiment, if the data priority of the first data is equal to the data priority of the second data, the first terminal may determine that the candidate resource set includes the transmission resource on the at least one time unit in the first time unit set, or may determine that the candidate resource set does not include the transmission resource on the time unit in the first time unit set, and the subsequent data transmission may be referred to the description of the previous two embodiments and will not be repeated herein.

Taking the first time unit set shown in fig. 4 as an example, the first time unit set includes a time slot 2, a time slot 3, a time slot 4 and a time slot 5, where data transmitted in the time slot 2, the time slot 3, the time slot 4 and the time slot 5, for example, PSSCH, and corresponding feedback information, for example, PSFCH, is transmitted in a time slot 7.

If the first terminal receives the PSSCH (i.e., the first data) sent by the second terminal in the time slot 2, and the priority level corresponding to the PSSCH is 3, the first terminal needs to send side feedback information to the second terminal in the time slot 7. If the first terminal determines that new data (i.e., second data) arrives in the time slot 4, resource selection is required, and the determined resource selection window is time slot 5 to time slot 25.

Case 1: the first data has a higher priority than the second data.

For example, the priority level corresponding to the second data is 5, that is, the priority of the second data is lower than the priority of the first data (where the priority level corresponding to the smaller priority level value is higher), if the first terminal selects the transmission resource in the time slot 5 to send the second data in the resource selection window, in the case that the side feedback is activated, the first terminal needs to receive the side feedback information for the second data sent by the receiving terminal of the second data in the time slot 7, and on the other hand, the first terminal needs to send the side feedback information for the first data to the second terminal in the time slot 7.

In this case, since the priority of the first data is higher than the priority of the second data, and due to the limitation of half duplex, the first terminal may choose to send the side feedback information of the first data to the second terminal in the time slot 7, and discard the side feedback information of the second data received in the time slot 7, which may cause the invalid sending of the second data sent by the first terminal in the time slot 5 to cause resource waste and possibly interfere with the data transmission of other terminals, so in the embodiment of the present application, in the case that the priority of the second data to be sent is lower than the priority of the received first data, the first terminal may exclude all transmission resources on the time slot located in the same time slot set as the time slot of the first data, that is, the first terminal may exclude the transmission resources on the time slot 5.

Case 2: the first data has a lower priority than the second data.

For example, if the priority level corresponding to the second data is 2, that is, the priority of the second data is higher than the priority of the first data, the candidate resource set may include the time slot 5, that is, the first terminal may select the transmission resource in the time slot 5. If the first terminal selects the transmission resource in the time slot 5 to send the second data, the first terminal needs to receive the side feedback information of the second data sent by the receiving terminal of the second data in the time slot 7, and although the first terminal also needs to send the side feedback information of the first data to the second terminal in the time slot 7, the first terminal selects the side feedback information of the second data sent by the receiving terminal of the second data in the time slot 7 and gives up sending the side feedback information of the first data to the second terminal in the time slot 7 because the priority of the second data is higher than the priority of the first data.

In other embodiments of the present application, if the first terminal receives first data sent by the second terminal in a first time unit, and the first data indicates that transmission resources are reserved in a third time unit, where the third time unit is a time unit in a second time unit set, the second time unit set includes at least one time unit, feedback information corresponding to data transmitted in the second time unit set is transmitted in a fourth time unit, and the first terminal has second data to send, in this case, the first terminal may further determine a candidate resource set for sending the second data according to the second time unit set.

In some embodiments, the first terminal determines the candidate set of resources based on the second set of time units and the data priority of the first data and the second data.

As an embodiment, if the data priority of the first data is higher than the data priority of the second data, the first terminal may determine that the candidate resource set does not include the transmission resource on the time unit in the second time unit set.

As another embodiment, if the data priority of the first data is lower than the data priority of the second data, the first terminal may determine that the candidate resource set includes transmission resources on the at least one time unit in the second time unit set.

With continued reference to the example shown in fig. 4, the first set of time units includes time slot 2, time slot 3, time slot 4 and time slot 5, the data transmitted in time slot 2, time slot 3, time slot 4 and time slot 5, e.g. PSSCH, the corresponding feedback information, e.g. PSFCH, is transmitted in time slot 7, and the second set of time units includes time slot 6, time slot 7, time slot 8 and time slot 9, the data transmitted in time slot 6, time slot 7, time slot 8 and time slot 9, e.g. PSSCH, the corresponding feedback information, e.g. PSFCH, is transmitted in time slot 11.

If the first terminal receives the first data sent by the second terminal in the time slot 2, including the PSCCH and the PSSCH, where the priority level corresponding to the PSSCH is 3, if the PSCCH indicates that the transmission resource in the time slot 6 is reserved, that is, the second terminal may send side-line data (denoted as third data) in the time slot 6, the third data may be, for example, retransmission data of the data carried in the PSSCH, where the priority level corresponding to the retransmission data is the same as the priority level of the data that is initially transmitted. If the second terminal transmits the third data in the time slot 6, the first terminal needs to transmit side feedback information of the third data to the second terminal in the time slot 11. If the first terminal determines that new data (i.e., second data) arrives in the time slot 5, resource selection is required, and the determined resource selection window is time slot 8 to time slot 28.

Taking the third data as retransmission data of the first data (here, PSSCH in the first data) as an example, the priority of the third data is the same as the priority of the first data.

Case 1: the first data has a higher priority than the second data, i.e. the third data has a higher priority than the second data.

For example, the priority level corresponding to the second data is 5, that is, the priority level of the second data is lower than the priority level of the first data (where the priority level corresponding to the smaller priority level value is higher), if the first terminal selects the transmission resource in the time slot 8 or the time slot 9 in the resource selection window to send the second data, in the case that the side feedback is activated, the first terminal needs to receive the side feedback information for the second data sent by the receiving terminal of the second data in the time slot 11, and on the other hand, the first terminal needs to send the side feedback information for the third data to the second terminal in the time slot 11.

In this case, since the priority of the first data is higher than the priority of the second data, and due to the limitation of half duplex, the first terminal may choose to send the side feedback information of the third data to the second terminal in the time slot 11, and discard the side feedback information of the second data received in the time slot 11, which may cause the invalid sending of the second data sent by the first terminal in the time slot 8 or the time slot 9 to cause resource waste and possibly interfere with the data transmission of other terminals, in this embodiment of the present application, in the case that the priority of the second data to be sent is lower than the priority of the third data received, the first terminal may exclude all the transmission resources on the time slots belonging to the same time slot set as the time slot of the third data, that is, the first terminal may exclude the transmission resources on the time slot 8 and/or the time slot 9, that is, does not use the time slot 8 and/or the time slot 9 to transmit the first data.

Case 2: the priority of the first data is lower than the priority of the second data, i.e. the priority of the third data is lower than the priority of the second data.

For example, the priority level corresponding to the second data is 2, that is, the priority of the second data is higher than the priority of the third data, and the candidate resource set may include all transmission resources on timeslots located in the same timeslot set as the timeslot of the third data, for example, including the timeslot 8 and/or the timeslot 9, that is, the first terminal may select a transmission resource in the timeslot 8 or the timeslot 9. If the first terminal selects the transmission resource in the time slot 8 to transmit the second data, the first terminal needs to receive the side feedback information of the second data sent by the receiving terminal of the second data in the time slot 11, and although the first terminal also needs to transmit the side feedback information of the third data to the second terminal in the time slot 11, the first terminal selects the side feedback information of the second data sent by the receiving terminal of the second data to be received in the time slot 11 and discards the side feedback information of the third data to be transmitted to the second terminal in the time slot 11 because the priority of the second data is higher than the priority of the third data.

In the embodiment of the present application, side feedback may be activated or deactivated, specifically, side feedback may be activated or deactivated according to pre-configuration information or network configuration information, for example, if side feedback is activated, after receiving side data sent by a sending end terminal, a receiving end terminal may feedback HARQ Acknowledgement (ACK) or negative Acknowledgement (Negative Acknowledgement, NACK) to the sending end terminal according to a detection result, and the sending end terminal may determine whether to retransmit data or transmit new data according to feedback information of the receiving end. If the sidestream feedback is deactivated, the receiving end terminal does not need to send feedback information, in this case, the transmitting end terminal may send data by adopting a blind retransmission manner, for example, the transmitting end terminal may repeatedly transmit K times for each sidestream data, where K is greater than or equal to 1.

That is, in the case that the sidestream feedback is activated, the receiving end terminal needs to send sidestream feedback information to the transmitting end terminal, so in the embodiment of the present application, the first terminal may determine the candidate resource set according to the manner described in the foregoing embodiment when the sidestream feedback is activated.

Alternatively, in the embodiment of the present application, the candidate resource set may be obtained by performing resource selection in a first resource set, where the first resource set may be a resource set B obtained based on the excluding operation in the embodiment shown in fig. 2, or a resource set a, that is, a determination manner of the candidate resource set according to the embodiment of the present application may be used as one step in the excluding operation in the embodiment shown in fig. 2.

Therefore, in the embodiment of the present application, when there is data to be sent, the first terminal may determine, according to a set of time units to which a time unit of the received data that has not yet been fed back belongs, a candidate resource set of the data to be sent, so as to be beneficial to avoiding a resource conflict problem between feedback information of the data to be sent and feedback information of the received data. Fig. 6 is a schematic flow chart of a method 300 of wireless communication according to another embodiment of the application, the method 300 being executable by a terminal device in the communication system shown in fig. 1, the method 300 comprising, as shown in fig. 6:

s310, the first terminal determines to send second data in a third time unit, wherein the second data is data to be sent by the first terminal;

S320, the first terminal receives first data sent by the second terminal on a first time unit before the third time unit;

s330, the first terminal determines that feedback information of the first data is sent to the second terminal equipment on a second time unit, wherein the first time unit is a time unit in a first time unit set, the first time unit set comprises at least one time unit, and feedback information corresponding to data transmitted in the first time unit set is transmitted in the second time unit;

s340, the first terminal determines whether to transmit the second data on the third time unit according to whether the first time unit and the third time unit belong to the same time unit set.

It should be noted that, in the embodiment of the present application, the time unit may be one or more time slots, or may also be one or more time domain symbols, for example, the first time unit may be a first time slot, and the first time unit set may include one or more time slots, and in the following, the time unit is taken as an example of a time slot, which is not limited to this embodiment of the present application.

Specifically, if new data arrives at the fourth time unit, the first terminal may perform resource selection, determine whether to transmit second data at the third time unit, further, before the third time unit, the first terminal may continue listening, if the first terminal receives, at the first time unit before the third time unit, first data transmitted by the second terminal, the first terminal may determine, according to the time of receiving the first data, that feedback information of the first data is transmitted at the second time unit, in this case, the first terminal may determine, according to a first time unit set to which the first time unit belongs, whether to transmit the second data at the third time unit, and in the case that it is determined that the second data is not transmitted at the third time unit, the first terminal may further perform resource reselection, determine, in the process of resource reselection, a candidate resource set for transmitting the second data, and further may select a target transmission resource in the candidate resource set, where the second data is transmitted.

As an embodiment, if the third time unit does not belong to the first time unit set, the first terminal determines to transmit the second data, and further transmits the second data on the third time unit.

As another embodiment, if the first time unit and the third time unit both belong to the first time unit set, the first terminal determines whether to transmit the second data on the third time unit according to the data priorities of the first data and the second data.

For example, if the data priority of the second data is higher than the data priority of the first data, determining to transmit the second data over the third time unit; or alternatively

And if the data priority of the second data is lower than that of the first data, determining that the second data is not transmitted on the third time unit.

As a further embodiment, if the first data indicates that transmission resources on a third time unit are reserved, i.e. the second terminal may transmit sideline data on the third time unit, which sideline data may be retransmission data of the first data, in which case the first terminal may determine that the second data is not transmitted on the third time unit, or may also determine whether to transmit the second data on the third time unit in combination with the data priorities of the first data and the second data. For example, if the data priority of the second data is higher than the data priority of the first data, determining to transmit the second data in the third time unit, otherwise, not transmitting the second data in the third time unit.

Further, if the first terminal determines that the second data is not transmitted in the third time unit, the first terminal may discard the second data, that is, not transmit the second data in any time unit, or the first terminal may perform resource reselection to redetermine a candidate resource set for transmitting the second data.

As an embodiment, the first terminal may determine the candidate resource set according to the first time unit set, and the priority of the first data and the priority of the second data.

For example, if the data priority of the first data is higher than the data priority of the second data, determining that the candidate set of resources does not include transmission resources on time units in the first set of time units;

for another example, if the data priority of the first data is lower than the data priority of the second data, it is determined that the candidate set of resources includes transmission resources on the at least one time unit in the first set of time units.

In some embodiments, the first terminal may determine whether to perform resource reselection according to whether the third time unit and the first time unit belong to the same time unit set, for example, if the third time unit and the first time unit both belong to the first time unit set, it is determined that resource reselection is required, that is, the candidate resource set for transmitting the second data is redetermined, and the specific determination manner may refer to the related description of the foregoing embodiment, or if the third time unit and the first time unit do not belong to the same time unit set, it is determined that resource reselection is not required, that is, the first terminal may transmit the second data on the third time unit.

In other embodiments of the present application, if the first terminal receives, on a first time unit, first data sent by the second terminal, and the first data indicates that transmission resources on a fifth time unit are reserved, where the fifth time unit is a time unit in a second time unit set, the second time unit set includes at least one time unit, feedback information corresponding to data transmitted in the second time unit set is transmitted in a sixth time unit, in which case, the first terminal may further determine, according to the second time unit set, a candidate resource set for sending the second data.

Optionally, in some embodiments, the first data may include a PSCCH and a PSSCH, where the PSCCH may be used to indicate a transmission resource in a fifth time unit, where the fifth time unit may be used for the second terminal to transmit third data, where the third data may be, for example, retransmission data that sends data carried in the PSSCH, where a priority corresponding to the retransmission data is the same as a priority of the data that is initially transmitted. In some embodiments, the first terminal determines the candidate set of resources based on the second set of time units and the data priority of the first data and the second data.

In the embodiment of the present application, side feedback may be activated or deactivated, specifically, side feedback may be activated or deactivated according to pre-configuration information or network configuration information, for example, if side feedback is activated, after receiving side data sent by a sending end terminal, a receiving end terminal may feedback HARQ Acknowledgement (ACK) or negative Acknowledgement (Negative Acknowledgement, NACK) to the sending end terminal according to a detection result, and the sending end terminal may determine whether to retransmit data or transmit new data according to feedback information of the receiving end. If the sidestream feedback is deactivated, the receiving end terminal does not need to send feedback information, and the transmitting end terminal sends data by adopting a blind retransmission mode, for example, the transmitting end terminal can repeatedly transmit K times for each sidestream data.

That is, in the case that the sidestream feedback is activated, the receiving end terminal needs to send sidestream feedback information to the transmitting end terminal, so in the embodiment of the present application, the first terminal may determine whether to transmit the second data and determine the candidate resource set according to the manner described in the foregoing embodiment in the case that the sidestream feedback is activated.

Therefore, in the embodiment of the present application, when the terminal device has data to be sent, the candidate resource set of the data to be sent may be determined according to the time unit set to which the time unit of the received data that has not yet been fed back belongs, which is beneficial to avoiding the resource conflict problem of the feedback information of the data to be sent and the feedback information of the received data.

The method embodiments of the present application are described in detail above with reference to fig. 2 to 6, and the apparatus embodiments of the present application are described in detail below with reference to fig. 7 to 10, it being understood that the apparatus embodiments and the method embodiments correspond to each other, and similar descriptions may refer to the method embodiments.

Fig. 7 shows a schematic block diagram of a terminal device 400 according to an embodiment of the application. As shown in fig. 7, the terminal apparatus 400 includes:

a communication module 410, configured to receive, at a first time unit, first data sent by a second terminal;

a determining module 420, configured to determine that feedback information of the first data is sent to the second terminal device on a second time unit, where the first time unit is a time unit in a first time unit set, the first time unit set includes at least one time unit, and feedback information corresponding to data transmitted in the first time unit set is transmitted in the second time unit; and

and determining a candidate resource set for transmitting second data according to the first time unit set, wherein the second data is data to be transmitted by the first terminal.

Optionally, in some embodiments, the determining module 420 is specifically configured to:

Determining that the candidate set of resources does not include transmission resources on time units in the first set of time units.

Optionally, in some embodiments, the determining module 420 is further configured to:

and determining the candidate resource set according to the first time unit set and the data priority of the first data and the second data.

if the data priority of the first data is higher than the data priority of the second data, determining that the candidate resource set does not include transmission resources on time units in the first time unit set; or alternatively

And if the data priority of the first data is lower than the data priority of the second data, determining that the candidate resource set comprises transmission resources on the at least one time unit in the first time unit set.

and determining the candidate resource set according to the first time unit set under the condition that the sidestream feedback is activated.

Optionally, in some embodiments, the time unit is a slot or a time domain symbol.

Alternatively, in some embodiments, the communication module may be a communication interface or transceiver, or an input/output interface of a communication chip or a system on a chip. The determination module may be one or more processors.

It should be understood that the terminal device 400 according to the embodiment of the present application may correspond to the terminal device in the embodiment of the method of the present application, and the foregoing and other operations and/or functions of each unit in the terminal device 400 are respectively for implementing the corresponding flow of the first terminal in the foregoing embodiment, which is not described herein for brevity.

Fig. 8 shows a schematic block diagram of a terminal device 500 according to another embodiment of the application. As shown in fig. 8, the terminal device 500 includes:

a determining module 510, configured to determine to send second data in a third time unit, where the second data is data to be sent by the first terminal;

a communication module 520, configured to receive, at a first time unit before the third time unit, first data sent by the second terminal;

the determining module 510 is further configured to determine that feedback information of the first data is sent to the second terminal device on a second time unit, where the first time unit is a time unit in a first time unit set, the first time unit set includes at least one time unit, and feedback information corresponding to data transmitted in the first time unit set is transmitted in the second time unit; and

And determining whether to transmit the second data on the third time unit according to whether the first time unit and the third time unit belong to the same time unit set.

Optionally, in some embodiments, the determining module 510 is specifically configured to:

if the first time unit and the third time unit belong to the first time unit set, determining whether to transmit the second data on the third time unit according to the data priority of the first data and the second data; or alternatively

And if the third time unit does not belong to the first time unit set, determining to transmit the second data on the third time unit.

Optionally, in some embodiments, the determining module is specifically configured to:

if the data priority of the second data is lower than the data priority of the first data, determining that the second data is not transmitted on the third time unit; or alternatively

And if the data priority of the second data is higher than that of the first data, determining to transmit the second data on the third time unit.

Optionally, in some embodiments, the determining module 510 is further configured to:

And if the second data is not transmitted in the third time unit, determining a candidate resource set for transmitting the second data.

and determining a candidate resource set according to the first time unit set, the priority of the first data and the priority of the second data.

and if the data priority of the second data is lower than the data priority of the first data, determining that the candidate resource set does not comprise transmission resources on time units in the first time unit set.

and under the condition that the sidestream feedback is activated, determining whether to transmit the second data on the third time unit according to whether the first time unit and the third time unit belong to the same time unit set.

It should be understood that the terminal device 500 according to the embodiment of the present application may correspond to the terminal device in the embodiment of the method of the present application, and the foregoing and other operations and/or functions of each unit in the terminal device 500 are respectively for implementing the corresponding flow of the first terminal in the foregoing embodiment, which is not described herein for brevity.

Fig. 9 is a schematic block diagram of a communication device 600 according to an embodiment of the present application. The communication device 600 shown in fig. 9 comprises a processor 610, from which the processor 610 may call and run a computer program to implement the method in an embodiment of the application.

Optionally, as shown in fig. 9, the communication device 600 may further comprise a memory 620. Wherein the processor 610 may call and run a computer program from the memory 620 to implement the method in an embodiment of the application.

The memory 620 may be a separate device from the processor 610 or may be integrated into the processor 610.

Optionally, as shown in fig. 9, the communication device 600 may further include a transceiver 630, and the processor 610 may control the transceiver 630 to communicate with other devices, and in particular, may send information or data to other devices, or receive information or data sent by other devices.

The transceiver 630 may include a transmitter and a receiver, among others. Transceiver 630 may further include antennas, the number of which may be one or more.

Optionally, the communication device 600 may be specifically a network device according to the embodiment of the present application, and the communication device 600 may implement a corresponding flow implemented by the network device in each method according to the embodiment of the present application, which is not described herein for brevity.

Optionally, the communication device 600 may be specifically a mobile terminal/terminal device according to an embodiment of the present application, and the communication device 600 may implement corresponding processes implemented by the mobile terminal/terminal device in each method according to the embodiment of the present application, which are not described herein for brevity.

Fig. 10 is a schematic structural view of a chip of an embodiment of the present application. The chip 700 shown in fig. 10 includes a processor 710, and the processor 710 may call and run a computer program from a memory to implement the method in the embodiment of the present application.

Optionally, as shown in fig. 10, chip 700 may also include memory 720. Wherein the processor 710 may call and run a computer program from the memory 720 to implement the method in an embodiment of the application.

Wherein the memory 720 may be a separate device from the processor 710 or may be integrated into the processor 710.

Optionally, the chip 700 may also include an input interface 730. The processor 710 may control the input interface 730 to communicate with other devices or chips, and in particular, may obtain information or data sent by other devices or chips.

Optionally, the chip 700 may further include an output interface 740. The processor 710 may control the output interface 740 to communicate with other devices or chips, and in particular, may output information or data to other devices or chips.

Optionally, the chip may be applied to the network device in the embodiment of the present application, and the chip may implement a corresponding flow implemented by the network device in each method in the embodiment of the present application, which is not described herein for brevity.

Optionally, the chip may be applied to a mobile terminal/terminal device in the embodiment of the present application, and the chip may implement a corresponding flow implemented by the mobile terminal/terminal device in each method in the embodiment of the present application, which is not described herein for brevity.

It should be understood that the chips referred to in the embodiments of the present application may also be referred to as system-on-chip chips, or the like.

It should be appreciated that the processor of an embodiment of the present application may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method embodiments may be implemented by integrated logic circuits of hardware in a processor or instructions in software form. The processor may be a general purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), an off-the-shelf programmable gate array (Field Programmable Gate Array, FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware components. The disclosed methods, steps, and logic blocks in the embodiments of the present application may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present application may be embodied directly in the execution of a hardware decoding processor, or in the execution of a combination of hardware and software modules in a decoding processor. The software modules may be located in a random access memory, flash memory, read only memory, programmable read only memory, or electrically erasable programmable memory, registers, etc. as well known in the art. The storage medium is located in a memory, and the processor reads the information in the memory and, in combination with its hardware, performs the steps of the above method.

It will be appreciated that the memory in embodiments of the application may be volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The nonvolatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable EPROM (EEPROM), or a flash Memory. The volatile memory may be random access memory (Random Access Memory, RAM) which acts as an external cache. By way of example, and not limitation, many forms of RAM are available, such as Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double Data Rate SDRAM (Double Data Rate SDRAM), enhanced SDRAM (ESDRAM), synchronous DRAM (SLDRAM), and Direct RAM (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

It should be understood that the above memory is illustrative but not restrictive, and for example, the memory in the embodiments of the present application may be Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous Link DRAM (SLDRAM), direct RAM (DR RAM), and the like. That is, the memory in embodiments of the present application is intended to comprise, without being limited to, these and any other suitable types of memory.

The embodiment of the application also provides a computer readable storage medium for storing a computer program.

Optionally, the computer readable storage medium may be applied to a network device in the embodiment of the present application, and the computer program causes a computer to execute a corresponding flow implemented by the network device in each method in the embodiment of the present application, which is not described herein for brevity.

Optionally, the computer readable storage medium may be applied to a mobile terminal/terminal device in the embodiment of the present application, and the computer program causes a computer to execute a corresponding procedure implemented by the mobile terminal/terminal device in each method of the embodiment of the present application, which is not described herein for brevity.

The embodiment of the application also provides a computer program product comprising computer program instructions.

Optionally, the computer program product may be applied to a network device in the embodiment of the present application, and the computer program instructions cause a computer to execute corresponding processes implemented by the network device in each method in the embodiment of the present application, which are not described herein for brevity.

Optionally, the computer program product may be applied to a mobile terminal/terminal device in the embodiment of the present application, and the computer program instructions cause a computer to execute corresponding processes implemented by the mobile terminal/terminal device in each method of the embodiment of the present application, which are not described herein for brevity.

The embodiment of the application also provides a computer program.

Optionally, the computer program may be applied to a network device in the embodiment of the present application, and when the computer program runs on a computer, the computer is caused to execute a corresponding flow implemented by the network device in each method in the embodiment of the present application, which is not described herein for brevity.

Optionally, the computer program may be applied to a mobile terminal/terminal device in the embodiment of the present application, and when the computer program runs on a computer, the computer is caused to execute corresponding processes implemented by the mobile terminal/terminal device in each method in the embodiment of the present application, which is not described herein for brevity.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

It will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, and are not repeated herein.

In the several embodiments provided by the present application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.

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

In addition, each functional unit in the embodiments of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit.

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server, a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a usb disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.

The foregoing is merely illustrative of the present application, and the present application is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A method of wireless communication, comprising:

the first terminal receives first data sent by the second terminal on a first time unit;

the first terminal determines that feedback information of the first data is sent to a second terminal on a second time unit, wherein the first time unit is a time unit in a first time unit set, the first time unit set comprises at least one time unit, and feedback information corresponding to data transmitted in the first time unit set is transmitted in the second time unit;

the first terminal determines a candidate resource set for transmitting second data according to the first time unit set, wherein the second data is data to be transmitted by the first terminal;

The first terminal determines a candidate resource set for sending second data according to the first time unit set, and the method comprises the following steps:

2. The method of claim 1, wherein the first terminal determining a candidate set of resources for transmitting second data from the first set of time units comprises:

the first terminal determines that the candidate set of resources does not include transmission resources on time units in the first set of time units.

3. The method of claim 1, wherein the first terminal determining the candidate set of resources based on the first set of time units and the data priority of the first data and the second data comprises:

4. A method according to any of claims 1 to 3, wherein the first terminal determining a set of candidate resources for transmitting second data from the first set of time units comprises:

and the first terminal determines the candidate resource set according to the first time unit set under the condition that the sidestream feedback is activated.

5. A method according to any of claims 1 to 3, characterized in that the time unit is a time slot or a time domain symbol.

6. A method of wireless communication, comprising:

the first terminal determines to send second data in a third time unit, wherein the second data is to be sent by the first terminal;

the first terminal receives first data sent by a second terminal on a first time unit before the third time unit;

The first terminal determines whether to transmit the second data on the third time unit according to whether the first time unit and the third time unit belong to the same time unit set;

the first terminal determines whether to transmit the second data on the third time unit according to whether the first time unit and the third time unit belong to the same time unit set, including:

if the first time unit and the third time unit belong to the first time unit set, the first terminal determines whether to transmit the second data on the third time unit according to the data priority of the first data and the second data; or alternatively

And if the third time unit does not belong to the first time unit set, the first terminal determines to transmit the second data on the third time unit.

7. The method of claim 6, wherein the first terminal determining whether to transmit the second data on the third time unit based on the data priority of the first data and the second data comprises:

8. The method of claim 6, wherein the method further comprises:

and if the first terminal determines not to transmit the second data in the third time unit, the first terminal determines a candidate resource set for transmitting the second data.

9. The method of claim 8, wherein the first terminal determining a candidate set of resources for transmitting the second data comprises:

and the first terminal determines a candidate resource set according to the first time unit set, the priority of the first data and the priority of the second data.

10. The method of claim 9, wherein the first terminal determining a candidate set of resources based on the first set of time units and the priority of the first data and the priority of the second data, comprises:

11. The method according to any of claims 6 to 10, wherein the first terminal determining whether to transmit the second data on the third time unit based on whether the first time unit and the third time unit belong to the same set of time units, comprises:

and under the condition that the sidestream feedback is activated, the first terminal determines whether to transmit the second data on the third time unit according to whether the first time unit and the third time unit belong to the same time unit set.

12. The method according to any of claims 6 to 10, wherein the time units are time slots or time domain symbols.

13. A terminal device, comprising:

the communication module is used for receiving first data sent by the second terminal on the first time unit;

a determining module, configured to determine feedback information of the first data sent to the second terminal on a second time unit, where the first time unit is a time unit in a first time unit set, the first time unit set includes at least one time unit, and feedback information corresponding to data transmitted in the first time unit set is transmitted in the second time unit; and

According to the first time unit set, determining a candidate resource set for transmitting second data, wherein the second data is data to be transmitted by the terminal equipment;

the determining module is further configured to:

14. The terminal device according to claim 13, wherein the determining module is specifically configured to:

15. The terminal device according to claim 13, wherein the determining module is specifically configured to:

16. The terminal device according to any of the claims 13 to 15, wherein the determining module is further configured to:

17. The terminal device according to any of the claims 13 to 15, characterized in that the time unit is a time slot or a time domain symbol.

18. A terminal device, comprising:

the determining module is used for determining to send second data in a third time unit, wherein the second data is data to be sent by the terminal equipment;

the communication module is used for receiving first data sent by the second terminal at a first time unit before the third time unit;

the determining module is further configured to determine that feedback information of the first data is sent to the second terminal on a second time unit, where the first time unit is a time unit in a first time unit set, the first time unit set includes at least one time unit, and feedback information corresponding to data transmitted in the first time unit set is transmitted in the second time unit; and

Determining whether to transmit the second data on the third time unit according to whether the first time unit and the third time unit belong to the same time unit set;

the determining module is specifically configured to:

19. The terminal device according to claim 18, wherein the determining module is specifically configured to:

20. The terminal device of claim 18, wherein the determining module is further configured to: and if the second data is not transmitted in the third time unit, determining a candidate resource set for transmitting the second data.

21. The terminal device of claim 20, wherein the determining module is further configured to:

22. The terminal device according to claim 21, wherein the determining module is specifically configured to:

23. The terminal device according to any of the claims 18 to 22, wherein the determining module is further configured to: and under the condition that the sidestream feedback is activated, determining whether to transmit the second data on the third time unit according to whether the first time unit and the third time unit belong to the same time unit set.

24. The terminal device according to any of the claims 18 to 22, characterized in that the time unit is a time slot or a time domain symbol.

25. A terminal device, comprising: a processor and a memory for storing a computer program, the processor being adapted to invoke and run the computer program stored in the memory, to perform the method according to any of claims 1 to 5 or the method according to any of claims 6 to 12.

26. A chip, comprising: a processor for calling and running a computer program from a memory, causing a device on which the chip is mounted to perform the method of any one of claims 1 to 5 or the method of any one of claims 6 to 12.

27. A computer readable storage medium storing a computer program for causing a computer to perform the method of any one of claims 1 to 5 or the method of any one of claims 6 to 12.