WO2022140934A1

WO2022140934A1 - Wireless communication method and terminal device

Info

Publication number: WO2022140934A1
Application number: PCT/CN2020/140238
Authority: WO
Inventors: 丁伊; 张世昌; 赵振山; 林晖闵
Original assignee: Oppo广东移动通信有限公司
Priority date: 2020-12-28
Filing date: 2020-12-28
Publication date: 2022-07-07
Also published as: CN116438873A

Abstract

Provided are a wireless communication method and a terminal device. Conditions for triggering cooperation between terminals are provided, such that the cooperation between the terminals can be triggered at an appropriate time, and sidelink transmission performance in a scenario in which there are problems such as hidden stations and half-duplex is improved. The wireless communication method comprises: when a first condition is met, a first terminal sending first information to a second terminal, wherein the first information is used for triggering cooperation between the terminals.

Description

Method and terminal device for wireless communication

technical field

The embodiments of the present application relate to the field of communication, and more particularly, to a method and terminal device for wireless communication.

Background technique

In some sideline transmission scenarios, such as scenarios with hidden station, half-duplex and other problems, the sideline transmission performance can be improved through cooperation between terminals. However, how to trigger the inter-terminal cooperation is an urgent problem to be solved.

SUMMARY OF THE INVENTION

The embodiments of the present application provide a wireless communication method and terminal device, and provide conditions for triggering cooperation between terminals, so that the cooperation between terminals can be triggered at an appropriate time, and the side effect in scenarios with hidden station, half-duplex and other problems can be improved. line transfer performance.

In a first aspect, a method for wireless communication is provided, the method comprising:

When the first condition is satisfied, the first terminal sends first information to the second terminal, where the first information is used to trigger inter-terminal cooperation.

In a second aspect, a terminal device is provided for executing the method in the above-mentioned first aspect.

Specifically, the terminal device includes functional modules for executing the method in the first aspect.

In a third aspect, a terminal device is provided, including a processor and a memory. The memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to execute the method in the first aspect.

In a fourth aspect, an apparatus is provided for implementing the method in the above-mentioned first aspect.

Specifically, the apparatus includes: a processor for invoking and running a computer program from a memory, so that a device in which the apparatus is installed executes the method in the above-mentioned first aspect.

In a fifth aspect, a computer-readable storage medium is provided for storing a computer program, and the computer program causes a computer to execute the method in the above-mentioned first aspect.

In a sixth aspect, a computer program product is provided, comprising computer program instructions, the computer program instructions causing a computer to perform the method of the first aspect above.

In a seventh aspect, there is provided a computer program which, when run on a computer, causes the computer to perform the method of the above-mentioned first aspect.

The above technical solutions provide conditions for triggering inter-terminal collaboration, so that inter-terminal collaboration can be triggered at an appropriate time, improving sideline transmission performance in scenarios with hidden station, half-duplex and other problems.

Description of drawings

FIG. 1 is a schematic diagram of a communication system architecture provided by the present application.

FIG. 2 is a schematic diagram of another communication system architecture provided by the present application.

FIG. 3 is a schematic diagram of the physical layer structure of NR-V2X provided by the present application.

FIG. 4 is a schematic diagram of resource reservation of NR-V2X provided by the present application.

FIG. 5 is a schematic diagram of resource selection or resource reselection of NR-V2X provided by the present application.

FIG. 6 is a schematic diagram of resource re-evaluation of NR-V2X provided by the present application.

FIG. 7 is a schematic diagram of resource preemption of NR-V2X provided by the present application.

FIG. 8 is a schematic diagram of a concealed station provided by the present application.

FIG. 9 is a schematic diagram of measuring CBR/CR provided by the present application.

FIG. 10 is a schematic flowchart of a method for wireless communication according to an embodiment of the present application.

FIG. 11 is a schematic block diagram of a terminal device provided according to an embodiment of the present application.

FIG. 12 is a schematic block diagram of a communication device provided according to an embodiment of the present application.

Fig. 13 is a schematic block diagram of an apparatus provided according to an embodiment of the present application.

Fig. 14 is a schematic block diagram of a communication system provided according to an embodiment of the present application.

Detailed ways

The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. With regard to the embodiments in the present application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

The technical solutions of the embodiments of the present application can be applied to various communication systems, for example: a Global System of Mobile communication (GSM) system, a Code Division Multiple Access (CDMA) system, a wideband Code Division Multiple Access (CDMA) system (Wideband Code Division Multiple Access, WCDMA) system, General Packet Radio Service (General Packet Radio Service, GPRS), Long Term Evolution (Long Term Evolution, LTE) system, Advanced Long Term Evolution (Advanced long term evolution, LTE-A) system , New Radio (NR) system, evolution system of NR system, LTE (LTE-based access to unlicensed spectrum, LTE-U) system on unlicensed spectrum, NR (NR-based access to unlicensed spectrum) unlicensed spectrum, NR-U) system, Non-Terrestrial Networks (NTN) system, Universal Mobile Telecommunication System (UMTS), Wireless Local Area Networks (WLAN), Wireless Fidelity (Wireless Fidelity, WiFi), fifth-generation communication (5th-Generation, 5G) system or other communication systems, etc.

Generally speaking, traditional communication systems support a limited number of connections and are easy to implement. However, with the development of communication technology, mobile communication systems will not only support traditional communication, but also support, for example, Device to Device (Device to Device, D2D) communication, Machine to Machine (M2M) communication, Machine Type Communication (MTC), Vehicle to Vehicle (V2V) communication, or Vehicle to everything (V2X) communication, etc. , the embodiments of the present application can also be applied to these communication systems.

Optionally, the communication system in this embodiment of the present application may be applied to a carrier aggregation (Carrier Aggregation, CA) scenario, a dual connectivity (Dual Connectivity, DC) scenario, or a standalone (Standalone, SA) distribution. web scene.

Optionally, the communication system in the embodiment of the present application may be applied to an unlicensed spectrum, where the unlicensed spectrum may also be considered as a shared spectrum; or, the communication system in the embodiment of the present application may also be applied to a licensed spectrum, where, Licensed spectrum can also be considered unshared spectrum.

The embodiments of the present application describe various embodiments in conjunction with network equipment and terminal equipment, where the terminal equipment may also be referred to as user equipment (User Equipment, UE), access terminal, subscriber unit, subscriber station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device, etc.

The terminal device may be a station (STATION, ST) in the WLAN, and may be a cellular phone, a cordless phone, a Session Initiation Protocol (Session Initiation Protocol, SIP) phone, a Wireless Local Loop (WLL) station, a personal digital assistant (Personal Digital Assistant, PDA) devices, handheld devices with wireless communication capabilities, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, next-generation communication systems such as end devices in NR networks, or future Terminal equipment in the evolved public land mobile network (Public Land Mobile Network, PLMN) network, etc.

In this embodiment of the present application, the terminal device can be deployed on land, including indoor or outdoor, handheld, wearable, or vehicle-mounted; it can also be deployed on water (such as ships, etc.); it can also be deployed in the air (such as airplanes, balloons, and satellites) superior).

In this embodiment of the present application, the terminal device may be a mobile phone (Mobile Phone), a tablet computer (Pad), a computer with a wireless transceiver function, a virtual reality (Virtual Reality, VR) terminal device, and an augmented reality (Augmented Reality, AR) terminal Equipment, wireless terminal equipment in industrial control, wireless terminal equipment in self driving, wireless terminal equipment in remote medical, wireless terminal equipment in smart grid , wireless terminal equipment in transportation safety, wireless terminal equipment in smart city or wireless terminal equipment in smart home, etc.

As an example and not a limitation, in this embodiment of the present application, the terminal device may also be a wearable device. Wearable devices can also be called wearable smart devices, which are the general term for the intelligent design of daily wear and the development of wearable devices using wearable technology, such as glasses, gloves, watches, clothing and shoes. A wearable device is a portable device that is worn directly on the body or integrated into the user's clothing or accessories. Wearable device is not only a hardware device, but also realizes powerful functions through software support, data interaction, and cloud interaction. In a broad sense, wearable smart devices include full-featured, large-scale, complete or partial functions without relying on smart phones, such as smart watches or smart glasses, and only focus on a certain type of application function, which needs to cooperate with other devices such as smart phones. Use, such as all kinds of smart bracelets, smart jewelry, etc. for physical sign monitoring.

In this embodiment of the present application, the network device may be a device for communicating with a mobile device, and the network device may be an access point (Access Point, AP) in WLAN, or a base station (Base Transceiver Station, BTS) in GSM or CDMA , it can also be a base station (NodeB, NB) in WCDMA, it can also be an evolved base station (Evolutional Node B, eNB or eNodeB) in LTE, or a relay station or access point, or in-vehicle equipment, wearable devices and NR networks The network equipment or base station (gNB) in the PLMN network or the network equipment in the future evolved PLMN network or the network equipment in the NTN network, etc.

As an example and not a limitation, in this embodiment of the present application, the network device may have a mobile feature, for example, the network device may be a mobile device. Optionally, the network device may be a satellite or a balloon station. For example, the satellite may be a low earth orbit (LEO) satellite, a medium earth orbit (MEO) satellite, a geostationary earth orbit (GEO) satellite, a High Elliptical Orbit (HEO) ) satellite etc. Optionally, the network device may also be a base station set in a location such as land or water.

In this embodiment of the present application, a network device may provide services for a cell, and a terminal device communicates with the network device through transmission resources (for example, frequency domain resources, or spectrum resources) used by the cell, and the cell may be a network device ( For example, the cell corresponding to the base station), the cell can belong to the macro base station, or it can belong to the base station corresponding to the small cell (Small cell). Pico cell), Femto cell (Femto cell), etc. These small cells have the characteristics of small coverage and low transmission power, and are suitable for providing high-speed data transmission services.

It should be understood that the terms "system" and "network" are often used interchangeably herein. The term "and/or" in this article is only an association relationship to describe the associated objects, indicating that there can be three kinds of relationships, for example, A and/or B, it can mean that A exists alone, A and B exist at the same time, and A and B exist independently B these three cases. In addition, the character "/" in this document generally indicates that the related objects are an "or" relationship.

The terms used in the embodiments of the present application are only used to explain specific embodiments of the present application, and are not intended to limit the present application. The terms "first", "second", "third" and "fourth" in the description and claims of the present application and the drawings are used to distinguish different objects, rather than to describe a specific order . Furthermore, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion.

It should be understood that the "instruction" mentioned in the embodiments of the present application may be a direct instruction, an indirect instruction, or an associated relationship. For example, if A indicates B, it can indicate that A directly indicates B, for example, B can be obtained through A; it can also indicate that A indicates B indirectly, such as A indicates C, and B can be obtained through C; it can also indicate that there is an association between A and B relation.

In the description of the embodiments of the present application, the term "corresponding" may indicate that there is a direct or indirect corresponding relationship between the two, or may indicate that there is an associated relationship between the two, or indicate and be instructed, configure and be instructed configuration, etc.

In this embodiment of the present application, "predefinition" may be implemented by pre-saving corresponding codes, forms, or other means that can be used to indicate relevant information in devices (for example, including terminal devices and network devices). The implementation method is not limited. For example, predefined may refer to the definition in the protocol.

In the embodiments of the present application, the "protocol" may refer to a standard protocol in the communication field, for example, may include the LTE protocol, the NR protocol, and related protocols applied in future communication systems, which are not limited in this application.

FIG. 1 is a schematic diagram of a communication system to which an embodiment of the present application is applied. The transmission resources of the vehicle-mounted terminals (the vehicle-mounted terminal 121 and the vehicle-mounted terminal 122 ) are allocated by the base station 110 , and the vehicle-mounted terminal transmits data on the sidelink according to the resources allocated by the base station 110 . Specifically, the base station 110 may allocate resources for single transmission to the terminal, or may allocate resources for semi-static transmission to the terminal.

FIG. 2 is a schematic diagram of another communication system to which the embodiments of the present application are applicable. The vehicle-mounted terminals (the vehicle-mounted terminal 131 and the vehicle-mounted terminal 132 ) independently select transmission resources for data transmission on the resources of the side link. Optionally, the in-vehicle terminal may randomly select transmission resources, or select transmission resources by means of listening.

For better understanding of the embodiments of the present application, the NR-V2X physical layer structure related to the present application is described.

In NR-V2X, autonomous driving needs to be supported, so higher requirements are put forward for data interaction between vehicles, such as higher throughput, lower latency, higher reliability, larger coverage, More flexible resource allocation, etc.

The physical layer structure of NR-V2X is shown in Figure 3, in which the Physical Sidelink Control Channel (PSCCH) is used to transmit the first sidelink control information (Sidelink Control Information, SCI), and the physical sidelink shared channel ( Physical Sidelink Shared Channel, PSSCH) is used to carry data and the second SCI, PSCCH and PSSCH are sent in the same time slot.

To facilitate a better understanding of the embodiments of the present application, the resource reservation in NR-V2X related to the present application is described.

In NR-V2X, in the above-mentioned communication system shown in FIG. 2 , the terminal selects resources by itself to send data. Resource reservation is the premise of resource selection.

Resource reservation means that the terminal sends the first SCI in the PSCCH to reserve resources to be used next. In NR-V2X, resource reservation within a transport block (TB) is supported as well as resource reservation between TBs, as shown in Figure 4.

The terminal sends the first SCI, and uses the "time domain resource assignment (Time resource assignment)" and "frequency domain resource assignment (Frequency resource assignment)" fields to indicate the N time-frequency resources of the current TB (including the resources used for current transmission). where N≤Nmax, in NR-V2X, Nmax is equal to 2 or 3. Meanwhile, the above N indicated time-frequency resources should be distributed in W time slots. In NR-V2X, W is equal to 32. For example, in TB 1 shown in FIG. 4 , the terminal sends the first SCI in PSCCH while sending initial transmission data on PSSCH, and uses the above two fields to indicate the time-frequency resource positions of initial transmission and retransmission 1 (that is, at this time N =2), that is, the time-frequency resources for retransmission 1 are reserved. And, the initial transmission and retransmission 1 are distributed in 32 time slots in the time domain. Similarly, in TB 1 shown in FIG. 4 , the terminal uses the first SCI sent in the PSCCH of retransmission 1 to indicate the time-frequency resources of retransmission 1 and retransmission 2, and retransmission 1 and retransmission 2 are in the time domain. distributed over 32 time slots.

Meanwhile, when the terminal sends the first SCI, the "resource reservation period (Resource reservation period)" field is used to reserve resources between TBs. For example, in FIG. 4 , when the terminal sends the first SCI of the initial transmission of TB 1, it uses the “Time resource assignment” and “Frequency resource assignment” fields to indicate the time-frequency resource positions of the initial transmission and retransmission 1 of TB 1, which are marked as { (t ₁ , f ₁ ), (t ₂ , f ₂ )}. Among them, t ₁ and t ₂ represent the time domain positions of the TB 1 initial transmission and retransmission 1 resources, and f ₁ and f ₂ represent the corresponding frequency domain positions. If in the first SCI, the value of the "Resource reservation period" field is 100 milliseconds, then the first SCI also indicates time-frequency resources {(t ₁ +100, f ₁ ), (t ₂ +100, f ₂ )}, these two resources are used for the transmission of TB 2 initial transmission and retransmission 1. Similarly, the first SCI sent in retransmission 1 of TB 1 also reserves the time-frequency resources of retransmission 1 and retransmission 2 of TB 2 by using the "Resource reservation period" field. In NR V2X, the possible values of the "Resource reservation period" field are 0, 1-99, 100, 200, 300, 400, 500, 600, 700, 800, 900, 1000 milliseconds, which is more flexible than LTE V2X . However, in each resource pool, only e values are configured, and the terminal determines the possible values according to the resource pool used. Note that the value e in the resource pool configuration is the resource reservation period set M, exemplarily, e is less than or equal to 16.

In addition, through network configuration or pre-configuration, the above-mentioned reservation between TBs can be activated or deactivated in units of resource pools. When deactivating the reservation between TBs, the "Resource reservation period" field is not included in the first SCI. In general, before triggering resource reselection, the value of the "Resource reservation period" field used by the terminal, that is, the resource reservation period, will not change. Every time the terminal sends the first SCI, it uses the "Resource reservation period" in it. ” field reserves the resources of the next cycle for the transmission of another TB, so as to achieve periodic semi-persistent transmission.

When UE 1 works in the communication system shown in FIG. 2 above, UE 1 can obtain the first SCI sent by other UEs by listening to PSCCHs sent by other UEs, so as to know the resources reserved by other UEs. When UE 1 selects resources, it will exclude resources reserved by other UEs, thereby avoiding resource collision.

To facilitate a better understanding of the embodiments of the present application, a resource selection method for NR-V2X interception related to the present application is described.

As shown in FIG. 5 , the terminal triggers resource selection or reselection at time slot n, and the resource selection window starts from n+T1 and ends at n+T2. 0<=T1<=T _proc,1 , when the subcarrier spacing is 15, 30, 60, 120 kHz, T _proc,1 is 3, 5, 9, and 17 time slots. T2 _min <= T2 <= remaining delay budget of the service, the value set of T2 _min is {1, 5, 10, 20}*2 ^μ time slots, where μ=0, 1, 2, 3 corresponds to the sub-slots When the carrier interval is 15, 30, 60, and 120 kHz, the terminal determines T2 _min from the value set according to the priority of the data to be sent by the terminal. For example, when the subcarrier spacing is 15 kHz, the terminal determines T2 _min from the set {1, 5, 10, 20} according to the priority of the data to be sent by the terminal. When T2 _min is greater than or equal to the remaining delay budget of the service, T2 is equal to the remaining delay budget of the service. The remaining delay budget is the difference between the time corresponding to the data delay requirement and the current time. For example, for a packet arriving at time slot n, the delay requirement is 50 milliseconds. Suppose a time slot is 1 millisecond. If the current time is time slot n, the remaining delay budget is 50 milliseconds. If the current time is time slot n+20 , the remaining delay budget is 30 ms.

The terminal performs resource monitoring from n-T0 to nT _proc,0 , and the value of T0 is 100 or 1100 milliseconds. When the subcarrier spacing is 15, 30, 60, and 120 kHz, T _proc,0 is 1, 1, 2, and 4 time slots. In fact, the terminal will listen to the first sideline control information sent by other terminals in each time slot (except its own transmission time slot). After time slot n triggers resource selection or reselection, the terminal uses n-T0 to nT _{proc ,0} result of resource listening.

Step 1:

The terminal takes all available resources belonging to the resource pool used by the terminal in the resource selection window as the resource set A, and any resource in the set A is denoted as R(x, y), where x and y indicate the frequency domain position and time domain position of the resource respectively. . Let the initial number of resources in set A be M _total .

Step 1-1: If the terminal sends data in the time slot m within the listening window and does not listen, the terminal will judge whether the time slot m+q*Prxlg and the resource R(x,y+j*Ptxlg) overlap, if If they overlap, the resource R(x, y) is excluded from the resource set A. Among them, j=0,1,2,3...C-1,C is determined by the random counter value generated by the terminal. When the terminal selects resources, it will randomly generate a counter value (a positive integer) to determine the pair to be selected. How many cycles are reserved for the resources received. Ptxlg is the number after Ptx is converted into logical time slots, Ptx is the resource reservation period determined by the terminal for resource selection, and is one of the values in the resource reservation period set M in the resource pool configuration used by the terminal, which is also used for resource selection. The value indicated by the "Resource reservation period" field in the first SCI of the terminal to send data after completing the resource selection. Therefore, the resource R(x, y+j*Ptxlg) is a series of resources marked by slanted hatching in the sub-figure 1 in FIG. 5 (the example in the figure is C=3). For time slots m+q*Prxlg, where q=1, 2, 3...Q, Prxlg is the number of Prx converted into logical time slots. Prx is the resource reservation period indicated by "Resource reservation period" in the first SCI transmitted in the PSCCH heard by the terminal. Since the terminal does not listen in the time slot m, here Prx is all possible values in the resource reservation period set M in the resource pool configuration used by the terminal, that is, the terminal will determine each value in M to calculate Whether the outgoing time slot m+q*Prxlg overlaps with the resource R(x,y+j*Ptxlg). For Q, if Prx<Tscal and nm<=Prxlg,

(represents rounded up), otherwise Q=1. Tscal is equal to the value of T2 converted to milliseconds. For example, the terminal does not listen in the time slot m, and sequentially selects a Prx from the resource reservation period set M in the resource pool configuration used for resource exclusion. For a certain Prx, if Prx<Tscal and nm<=Prxlg, Assuming that the Q value is calculated as 2, then the time slot m+q*Prxlg is the time slot marked by the next two horizontal lines shaded by the time slot m in the sub-picture 1 in Fig. 5, otherwise Q=1, the time slot m+q *Prxlg is the time slot marked by the dotted shading in the subgraph 1 of FIG. 5 . Optionally, when the resource pool used by the terminal deactivates the reservation between TBs, the terminal may not perform the above Step 1-1.

Step 1-2: If the terminal senses the first SCI (v is the frequency domain position of the resource) transmitted in the PSCCH on the resource E(v, m) in the time slot m in the listening window, measure the side of the PSCCH. Sidelink Reference Signal Received Power (SL-RSRP) or the SL-RSRP of the PSSCH scheduled by the PSCCH (that is, the SL-RSRP of the corresponding PSSCH sent in the same time slot as the PSCCH), if the measured If the SL-RSRP is greater than the SL-RSRP threshold, and the resource pool used by the UE activates resource reservation between TBs, the terminal assumes that the first sideline control information with the same content is received on the timeslot m+q*Prxlg. where q=1,2,3...Q, for Q, if Prx<Tscal and nm<=Prxlg,

(representative round up) otherwise Q=1. Tscal is equal to the value of T2 converted to milliseconds. Prxlg is the number after Prx is converted into logical time slots, and Prx is the resource reservation period indicated by "Resource reservation period" in the first SCI transmitted in the PSCCH heard by the terminal. The terminal will judge the first SCI received at time slot m and the resources indicated by the "Time resource assignment" and "Frequency resource assignment" fields of the Q first SCIs assumed to be received and the resource R(x,y+j* Ptxlg) whether they overlap, and if so, exclude the corresponding resource R(x, y) from the set A. The above j=0, 1, 2, 3...C-1, C are determined by the random counter value generated by the terminal. Ptxlg is the number after Ptx is converted into logical time slots, and Ptx is the resource reservation period determined by the terminal performing resource selection.

For example, when the resource pool used by the UE activates the reservation between TBs, the resource R(x, y+j*Ptxlg) is a series of resources marked with slashes in sub-figure 2 in FIG. 5 (the example in the figure is C=3) . If the terminal senses the first SCI in PSCCH on time slot m resource E(v, m), and decodes Prx>Tscal, and calculates that Q is equal to 1, the terminal will assume that it has received the same on time slot m+Prxlg Content's first SCI. The terminal will judge the

resources

1, 2, 3, and 4 indicated by the "Time resource assignment" and "Frequency resource assignment" fields of the first SCI received at time slot m and assuming that the first SCI received at time slot m+Prxlg Whether , 5, 6 overlap with resource R(x, y+j*Ptxlg), if they overlap, resource R(x, y) is excluded from resource set A.

If the SL-RSRP measured by the terminal is greater than the SL-RSRP threshold, and the resource pool used by the terminal deactivates the resource reservation between TBs, the terminal only judges the "Time resource assignment" and "Frequency assignment" of the first SCI received in the time slot m Whether the resource indicated by the resource assignment" field overlaps with the resource R(x,y+j*Ptxlg), if it does overlap, the resource R(x,y) is excluded from the resource set A. Optionally, when the resource pool used by the UE deactivates the reservation between TBs, the resource R(x, y+j*Ptxlg) is equal to R(x, y).

If the remaining resources in the resource set A are less than M _total *X% after the above-mentioned resource exclusion, the SL-RSRP threshold is raised by 3 decibels (dB), and Step 1 is performed again. The physical layer reports the resource set A after resource exclusion to the upper layer as a candidate resource set.

That is to say, if the terminal sends data in time slot m within the listening window and does not listen, the terminal will perform resource exclusion according to time slot m and each value of resource reservation period set M in the resource pool configuration used by the terminal. . Specifically, the terminal will determine a series of time slots according to the time slot m, the upper bound T2 of the resource selection window, and the value of the resource reservation period in the resource pool configuration, denoted as time slot set 1 . The terminal will determine a series of resources according to the resource R(x, y), the counter value generated by itself, and the resource reservation period used by itself, which is denoted as resource set 1. If resource set 1 and slot set 1 overlap, resource R(x, y) is excluded from resource set A. The above R(x, y) is any resource in the resource set A.

Optionally, when the resource pool used by the terminal deactivates the reservation between TBs, the terminal may not perform the above Step 1-1.

Optionally, if the terminal senses the first SCI (v is the frequency domain position of the resource) transmitted in the PSCCH on the resource E(v, m) in the time slot m in the listening window, it measures the SL- value of the PSCCH. RSRP or the SL-RSRP of the PSSCH scheduled by the PSCCH (that is, the SL-RSRP of the corresponding PSSCH sent in the same time slot as the PSCCH), if the measured SL-RSRP is greater than the SL-RSRP threshold, and the resource pool used by the terminal is activated For resource reservation between TBs, the terminal will determine a series of parameters based on the "Time resource assignment", "Frequency resource assignment", "resource reservation period" fields in the PSCCH, the upper bound T2 of the resource selection window, and the time slot m. The resource is recorded as resource set 1, and a series of resources are determined according to the resource R(X, Y) and the counter value generated by itself, as well as the resource reservation period used by itself, and it is recorded as resource set 2. If the resource set 1 and the resource set 2 overlap, the terminal excludes the resource R(X, Y) from the resource set A.

If the measured SL-RSRP is greater than the SL-RSRP threshold, and the resource pool used by the terminal deactivates the resource reservation between TBs, the terminal will listen to the "Time resource assignment", "Frequency resource assignment" fields in the PSCCH, and the time slot m. Determine a series of resources, denoted as resource set 1. If resource set 1 and R(X, Y) overlap, the terminal excludes resource R(X, Y) from resource set A.

The above R(X, Y) refers to any resource in the resource set A.

Step 2: The upper layer randomly selects resources from the reported candidate resource set to send data. That is, the terminal randomly selects resources from the candidate resource set to send data.

requires attention:

1. The above RSRP threshold is determined by the priority P1 carried in the PSCCH heard by the terminal and the priority P2 of the data to be sent by the terminal. The configuration of the resource pool used by the terminal includes an SL-RSRP threshold table, and the SL-RSRP threshold table includes the SL-RSRP thresholds corresponding to all priority combinations. The configuration of the resource pool can be network configuration or pre-configured.

For example, as shown in Table 1, assuming that the optional priority levels of P1 and P2 are both 0-7, the SL-RSRP thresholds corresponding to different priority combinations are represented by γ _ij , where i in γ _ij is the priority The value of the priority level P1, j is the value of the priority level P2.

Table 1

When the terminal detects the PSCCH sent by other UEs, obtains the priority P1 carried in the first sideline control information transmitted in the PSCCH and the priority P2 of the data to be sent, and the terminal determines the SL-RSRP by looking up Table 1 above. threshold.

2. Whether the terminal uses the measured PSCCH-RSRP or the PSSCH-RSRP scheduled by the PSCCH to compare with the SL-RSRP threshold depends on the resource pool configuration of the resource pool used by the terminal. The configuration of the resource pool can be network configuration or pre-configured.

3. Regarding the above Prxlg/Ptxlg is the number of logical time slots converted by Prx/Ptx: Assuming that one time slot is equal to 1 millisecond and Prx is 5 milliseconds, among these 5 time slots, 2 time slots may be time division duplex Downlink time slots in (Time Division Duplex, TDD) mode or time slots for sending synchronization signals, these time slots are not included in the Sidelink resource pool, so it is necessary to convert the 5 milliseconds represented by Prx into 3 logical time slots. time slot, ie Prxlg.

4. For the above X%, the possible values of X are {20, 35, 50}. The configuration of the resource pool used by the terminal includes the corresponding relationship between the priority and the above possible values, and the terminal determines the value of X according to the priority of the data to be sent and the corresponding relationship. The resource pool configuration can be either configured by the network or pre-configured.

In addition, NR-V2X also supports re-evaluation (Re-evaluation) for resources that have been selected but not indicated by sending the first SCI after the resource selection is completed.

As shown in FIG. 6 , resources x, y, z, u, and v are time-frequency resources selected by the terminal in time slot n, and resource y is located in time slot m. For the resources z and u that the terminal will send the first SCI to indicate for the first time in resource y (resource y has been indicated by the first SCI in resource x before). The terminal performs the above Step 1 at least once in the time slot mT ₃ , that is, at least in the time slot mT ₃ , determines the resource selection window and the listening window according to the above, and executes the above Step 1 to exclude resources in the resource selection window to obtain candidate resources. gather. If the resource z or u is not in the candidate resource set, the terminal performs the above Step 2 to reselect the time-frequency resources in the resource z and u that are not in the candidate resource set. Depending on the implementation of the terminal, the terminal can also reselect any selected but failed time-frequency resources. Send the resources indicated by the first SCI, for example, any one or more of resources z, u, and v. The above T ₃ is equal to T _proc,1 . (The dotted arrow in Figure 6 indicates that the first SCI indication is about to be sent, and the solid arrow indicates that the first SCI indication has been sent)

NR-V2X supports resource preemption (Pre-emption) mechanism. In NR-V2X, the conclusions about the resource preemption mechanism are all described from the perspective of the preempted terminal. After the resource selection is completed, the terminal continues to listen to the first SCI. If the time-frequency resource that has been selected and indicated by sending the first SCI meets the following three conditions, it means that the time-frequency resource is preempted by other terminals, and the terminal will target the time-frequency resource. This time-frequency resource triggers resource reselection:

1. The detected resource indicated in the first SCI overlaps with the resource selected and indicated by the terminal.

2. The SL-RSRP of the PSCCH corresponding to the first SCI heard by the terminal or the SL-RSRP of the PSSCH scheduled by the PSCCH is greater than the SL RSRP threshold.

3. The priority carried in the detected first SCI is higher than the priority of the data to be sent by the terminal.

As shown in FIG. 7 , resources w, x, y, z, and v are time-frequency resources that have been selected by the terminal in time slot n, and resource x is located in time slot m. For the resources x and y indicated by the first sideline control information that the terminal is about to send on resource x and which have been indicated by the first sideline control information previously sent by the terminal. The terminal performs the above Step 1 at least once in the time slot mT ₃ , that is, at least in the time slot mT ₃ , determines the resource selection window and the listening window according to the above, and executes the above Step 1 to exclude the resources in the resource selection window, and determine the candidate resources. gather. If the resource x or y is not in the candidate resource set, it is further judged whether it satisfies the above three conditions, and if so, the terminal performs Step 2 to reselect the time-frequency resources in the resources x and y that satisfy the above three conditions. In addition, when resource reselection is triggered, depending on the terminal implementation, the terminal may reselect any resource that has been selected but not indicated by sending the first sideline control information, such as any one or more of resources z and v. The above T ₃ is equal to T _proc,1 .

The above-mentioned SL-RSRP is the resource element (Resource Element) of all bearing reference signals (Demodulation Reference Signal (DMRS) or Channel State Information Reference Signal (CSI-RS)) in PSCCH or PSSCH. The linear mean of the received power over RE). When the PSSCH is transmitted using multiple antenna ports, the SL-RSRP is the sum of the SL-RSRPs measured by the respective antenna ports.

According to the above, the first SCI is carried in the PSCCH, and mainly includes a domain related to resource sensing, which is convenient for other UEs to perform resource exclusion and resource selection after decoding. In the PSSCH, in addition to data, a second SCI is also carried, and the second SCI mainly includes a field related to data demodulation, which is convenient for other UEs to demodulate the data in the PSSCH.

To facilitate a better understanding of the embodiments of the present application, the inter-terminal cooperation related to the present application is described.

Inter-terminal cooperation is one of the research goals of sideline (SL) transmission in release 17 (release 17, R17), which is used to reduce the negative impact of problems such as concealed stations and half-duplex. For example, in Fig. 8, due to the occlusion of buildings, UE A does not receive the first SCI sent by UE B or the measured SL-RSRP is low. When UE A triggers resource selection or reselection, the resources reserved by UE B are not excluded, which may lead to resource collision. At this time, UE B is called the hidden station of UE A.

Through inter-terminal cooperation, such as the cooperation between UE A and UE C in Figure 8, this problem can be solved. UE C can receive the first SCI sent by UE B, and when UE C determines the first resource set, it can exclude the resources reserved by UE B, and indicate the first resource set to UE A. By selecting resources in the intersection of candidate resource sets obtained after resource exclusion, resource collision with UE B can be avoided.

The above description is one of the examples of inter-terminal cooperation. The trigger mechanism of inter-terminal cooperation is mainly divided into the following two types:

1. The coordinated terminal (UE A in FIG. 8 ) sends first information to trigger cooperation, and the cooperating terminal (UE C in FIG. 8 ) constructs a first resource set and sends it to UE A to assist UE A in resource selection and/or resource exclusion .

2. The cooperating terminal (UE C in FIG. 8 ) actively sends the constructed first resource set to the coordinated terminal (UE A in FIG. 8 ) according to the network configuration or pre-configuration.

The above-mentioned cooperative terminal refers to a terminal that constructs and transmits a first resource set, and a cooperative terminal refers to a terminal that uses the first resource set to perform resource selection and/or resource exclusion.

In order to better understand the embodiments of the present application, the measurement of the channel busy ratio (Channel Busy Ratio, CBR)/channel occupancy ratio (Channel Occupancy Ratio, CR) related to the present application is described.

CBR and CR are two basic metrics used to support congestion control.

Among them, CBR is defined as: in the CBR measurement window [nc, n-1], the proportion of sub-channels with SL RSSI higher than the configured threshold to the total number of sub-channels in the resource pool, where c is equal to 100 or 100·2 ^μ timeslots, μ is related to the sub-carrier spacing, for example, the sub-carrier spacing of 15 kHz, 30 kHz, 60 kHz, and 120 kHz corresponds to μ as 0, 1, 2, and 3.

The definition of CR is: the number of sub-channels that the UE has used to transmit data within the range of [n-a,n-1] and the number of sub-channels included in the sideline grant obtained within the range of [n,n+b] accounts for [ The proportion of the total number of sub-channels belonging to the resource pool within the range of n-a,n+b], CR can be calculated separately for different priorities. Where a is a positive integer, b is 0 or a positive integer, the values of a and b are determined by the UE, but the following three conditions must be met:

1) a+b+1=1000 or 1000·2 ^μ time slots, μ is related to the subcarrier spacing, for example, the subcarrier spacing of 15kHz, 30kHz, 60kHz, and 120kHz corresponds to μ being 0, 1, 2, 3 .

2)b<(a+b+1)/2;

3) n+b does not exceed the last transmission of the current transmission indicated by the sideline authorization;

Note: The smallest scheduling unit in the time domain in the resource pool is a time slot, and the smallest scheduling unit in the frequency domain is a subchannel. Exemplarily, the possible values of the frequency domain width of a subchannel are 10, 12, 15, 20, 25, 50, 75, and 100 PRBs.

Figure 9 is a simple example of UE measuring CBR/CR. It is assumed that the resource pool used by the UE includes only two subchannels, all the time slots in Figure 9 belong to the resource pool used by the UE, and the UE only occupies one subchannel for sending PSSCH and PSCCH. The sub-channels in the sideline grant used by the UE are v ₁ , v ₂ , v ₃ , v ₄ , v ₅ . When the UE is about to send data in resource v ₅ , the UE measures CR and CBR in time slot nN to determine whether Abandon transmission on subchannel _v5 .

For CBR, in the time slot [n-N-c, n-N-1], the Sidelink Received Signal Strength Indication (SL-RSSI) measured by the UE on the two subchannels y and u is greater than the configured threshold , then the CBR is 2 divided by the total number of sub-channels belonging to the resource pool used by the UE in the time slot [n-N-c, n-N-1], or the CBR is 2 divided by the time slot [n-N-c, n-N-1] in the time slot [n-N-c, n-N-1] except the time slot used by the UE for transmission The total number of sub-channels belonging to the resource pool used by the UE.

For CR, assuming b=0, the sub-channels that the UE has used to transmit data in [nNa, nN-1] are v ₁ , v ₂ , v ₃ , v ₄ , then CR is 4 divided by the time slot [nNa, The total number of subchannels belonging to the resource pool used by the UE in nN-1] or CR is 4 divided by the total number of subchannels belonging to the resource pool used by the UE in the time slot [nNa, nN].

The above calculation of CR for different priorities, assuming b=0, the sub-channels that the UE has used to send data in [nNa, nN-1] are v ₁ , v ₂ , v ₃ , v ₄ , for a certain priority f, the UE sends data with priority f in subchannels v ₁ , v ₄ , then the CR for priority f is 2 divided by the sub-channels in the resource pool used by the UE in the time slot [nNa, nN-1] The total number or CR is 2 divided by the total number of sub-channels in the time slot [nNa, nN] belonging to the resource pool used by the UE.

The above N is related to the processing capability of the UE.

In this application, the first SCI may also be referred to as a first-order SCI, and the second SCI may also be referred to as a second-order SCI.

It should be noted that inter-terminal collaboration is one of the key research contents of R17SL. From the above, it is known that the triggering mechanism of inter-terminal collaboration is mainly divided into two categories, but how to trigger inter-terminal collaboration has not been disclosed.

Based on the above problems, the present application proposes a scheme for triggering inter-terminal collaboration, which can trigger inter-terminal collaboration based on CBR/CR measurement, the RSRP threshold used by the UE, and the number of resources in the candidate resource set.

The technical solutions of the present application are described in detail below through specific embodiments.

FIG. 10 is a schematic flowchart of a method 200 for wireless communication according to an embodiment of the present application. As shown in FIG. 10 , the method 200 may include at least part of the following contents:

S210: In the case where the first condition is satisfied, the first terminal sends first information to the second terminal, where the first information is used to trigger inter-terminal cooperation.

In this embodiment of the present application, when the first condition is met, the first terminal triggers inter-terminal cooperation by sending the first information, and the second terminal can determine the first resource set according to the first information, and use the first resource The set is indicated to the first terminal, so that the first terminal can utilize the first resource set for resource exclusion and/or resource selection. That is, in this embodiment of the present application, the first terminal may trigger inter-terminal cooperation at an appropriate time, and perform resource exclusion and/or resource selection based on the resource set fed back by the second terminal, thereby improving the existence of hidden stations, half-duplex, etc. Sideline transfer performance in the scenario in question.

Optionally, the first condition may be determined based on CBR/CR measurement, based on the RSRP threshold used by the first terminal, or based on the number of resources in the candidate resource set, or the like.

Optionally, in some embodiments, the first condition includes but is not limited to at least one of the following:

The CBR measured by the first terminal is greater than the first threshold, or the CBR measured by the first terminal is less than the first threshold;

The CR measured by the first terminal is greater than the second threshold, or the CR measured by the first terminal is less than the second threshold;

The CR measured by the first terminal for at least one priority is greater than the third threshold, or the CR measured by the first terminal for at least one priority is less than the third threshold;

The sum of the CRs measured by the first terminal for multiple priorities is greater than the fourth threshold, or the sum of the CRs measured by the first terminal for multiple priorities is smaller than the fourth threshold;

After the first terminal has performed the candidate resource exclusion based on the unlistened time slot and/or the candidate resource exclusion based on the SCI detected in the listening window, the number of resources in the candidate resource set is greater than the fifth threshold;

After the first terminal executes the candidate resource exclusion based on the unlistened time slot and/or the candidate resource exclusion based on the SCI detected in the listening window, the number of resources in the candidate resource set is the same as the initial number in the candidate resource set. The ratio of the number of resources is greater than the sixth threshold;

All SL-RSRP thresholds used by the first terminal are greater than the seventh threshold, or some SL-RSRP thresholds used by the first terminal are greater than the seventh threshold;

The number of retransmissions of the data to be transmitted by the first terminal is greater than the eighth threshold, or the number of retransmissions of the data to be transmitted by the first terminal is less than the eighth threshold;

The first terminal determines that the number of conflicts is greater than the ninth threshold, and the conflict includes at least one of a conflict between uplink transmission and sideline transmission, a conflict between sideline transmission and sideline transmission, and a conflict between sideline transmission and sideline reception;

the first terminal is in the target time unit;

The first terminal triggers resource selection or reselection;

The first terminal triggers the re-evaluation process for the selected resource;

The first terminal triggers a process of judging whether the selected resource is preempted by other terminals;

The threshold for triggering the first terminal to repeatedly perform candidate resource exclusion based on unlistened time slots and/or candidate resource exclusion based on SCIs heard within the listening window is greater than or equal to the tenth threshold.

It should be noted that, in the first condition, "to exclude candidate resources based on the time slot that is not listened to and/or to exclude candidate resources based on the SCI heard in the listening window" may specifically be the above Step 1. Specifically, the "rejection of candidate resources based on unlistened time slots" may be the above Step 1-1. "Excluding candidate resources based on the SCIs detected in the listening window" may be the above Step 1-2.

In some embodiments, in the first condition, "after the first terminal has performed the candidate resource exclusion based on the unlistened time slot and/or the candidate resource exclusion based on the SCI heard in the listening window", It may be "after the first terminal executes the above Step 1".

In addition, in the first condition, the "initial number of resources in the candidate resource set" may be "M _total " in the above Step 1.

It should also be noted that, in the first condition, "trigger the first terminal to repeatedly execute the threshold for excluding candidate resources based on unlistened time slots and/or excluding candidate resources based on SCIs detected in the listening window. " can be "X%" in Step1 above.

Optionally, in the first condition,

The at least one priority is pre-configured or agreed upon by a protocol; or,

The at least one priority is configured or indicated by the network device; or,

The at least one priority is determined based on the terminal implementation.

Optionally, in one implementation, the at least one priority is all priorities greater than the target priority, or the at least one priority is all the priorities lower than the target priority.

Optionally, in the first condition,

The multiple priorities are pre-configured or agreed upon by the protocol; or,

The plurality of priorities are configured or indicated by the network device; or,

The multiple priorities are determined based on the terminal implementation.

Optionally, in one implementation, the multiple priorities are all priorities greater than the target priority, or the multiple priorities are all the priorities smaller than the target priority.

Optionally, the target priority is a priority that depends on terminal implementation; or, the target priority is pre-configured or agreed in a protocol; or, the target priority is configured or indicated by the network device.

It should be noted that, when the first terminal performs the above Step 1, the SL-RSRP will be measured and compared with the SL-RSRP threshold to determine whether to exclude the corresponding resource. The configuration of the resource pool used by the first terminal includes an SL-RSRP threshold table, as shown in Table 1 above. The SL-RSRP threshold table includes SL-RSRP thresholds corresponding to all priority combinations. The configuration of the resource pool can be network configuration or pre-configured. The first terminal determines the corresponding SL-RSRP threshold according to the priority P1 carried in the sensed PSCCH and the priority P2 of the data to be sent. (See the relevant descriptions of Step 1 to Step 2 above)

Optionally, in the first condition, all SL-RSRP thresholds used by the first terminal include:

During the process that the first terminal performs candidate resource exclusion based on unlistened time slots and/or candidate resource exclusion based on the SCI detected in the listening window, the first terminal performs the process according to the All SL-RSRP thresholds determined by the priority carried by the SCI and the priority of the data to be sent; or,

All SL-RSRP thresholds determined by the first terminal according to the priority of the data to be sent.

For example, all SL-RSRP thresholds used by the first terminal may include: all SL-RSRP thresholds determined by the first terminal according to the priority carried by the SCI and the priority of the data to be sent during the execution of the above Step 1 by the first terminal. RSRP threshold. Considering that the first terminal may raise the SL-RSRP threshold multiple times and repeatedly perform the above Step 1, all the SL-RSRP thresholds used by the first terminal may include: the first terminal performs the above Step 1 process for the first time or the last time All SL-RSRP thresholds are determined according to the priority carried by the sensed SCI and the priority of the data to be sent.

For another example, all SL-RSRP thresholds used by the first terminal may include: all SL-RSRP thresholds determined by the first terminal according to the priority of the data to be sent by the first terminal, such as a row in Table 1 above. Considering that the first terminal may raise the SL-RSRP threshold multiple times, all the SL-RSRP thresholds used by the first terminal may include: the SL-RSRP threshold is not raised or after the SL-RSRP threshold is raised for the last time, the first terminal All SL-RSRP thresholds determined according to the priority of the data to be sent by itself. Or all SL-RSRP thresholds used by the first terminal may include: SL-RSRP thresholds determined by the first terminal according to the priority of the data to be sent by the first terminal and all possible priorities.

Optionally, in the first condition, the partial SL-RSRP threshold used by the first terminal includes:

During the process that the first terminal performs the candidate resource exclusion based on the unlistened time slot and/or the candidate resource exclusion based on the SCI sensed in the listening window, the first terminal performs the process according to the sensed sideline control information. The carried priority greater than the priority threshold and the SL-RSRP threshold determined by the priority of the data to be sent; or,

During the process that the first terminal performs the candidate resource exclusion based on the unlistened time slot and/or the candidate resource exclusion based on the SCI sensed in the listening window, the first terminal performs the process according to the sensed sideline control information. The carried priority less than the priority threshold and the SL-RSRP threshold determined by the priority of the data to be sent; or,

the SL-RSRP threshold determined by the first terminal according to the priority of the data to be sent and the priority greater than the priority threshold;

The first terminal determines the SL-RSRP threshold according to the priority of the data to be sent and the priority less than the priority threshold.

Optionally, the priority threshold value is pre-configured or agreed in a protocol; or, the priority threshold value is configured or indicated by a network device; or, the priority threshold value is determined based on terminal implementation.

For example, the partial SL-RSRP threshold used by the first terminal may include: a priority carried by the first terminal according to the detected SCI in the process of performing the above Step 1 that is greater than or less than the priority threshold, and a pending SL-RSRP threshold determined by the priority of sending data. Considering that the first terminal may raise the SL-RSRP threshold multiple times and repeatedly perform the above Step 1, the partial SL-RSRP threshold used by the first terminal may include: the first terminal performs the above Step 1 process for the first time or the last time All the SL-RSRP thresholds are determined according to the priority carried by the sensed SCI which is greater than or less than the priority threshold, and the priority of the data to be sent.

For another example, the partial SL-RSRP threshold used by the first terminal may include: the SL-RSRP threshold determined by the first terminal according to the priority of the data to be sent by the first terminal and the priority greater than or less than the priority threshold. Considering that the first terminal may raise the SL-RSRP threshold multiple times, the partial SL-RSRP threshold used by the first terminal may include: the SL-RSRP threshold is not raised or after the SL-RSRP threshold is raised for the last time, the first terminal The SL-RSRP threshold determined according to the priority of the data to be sent by itself and the priority greater than or less than the priority threshold.

Optionally, in the first condition, the target time unit includes but is not limited to at least one of the following:

The time unit for triggering resource selection or resource reselection by the first terminal, for example, the time unit for triggering resource selection or resource reselection by the first terminal is the time slot n in FIG. 5;

The difference between the time unit when the first terminal triggers resource selection or resource reselection and N1 time units, where N1 is a positive integer, for example, the time unit when the first terminal triggers resource selection or resource reselection is the time unit in FIG. 5 above. time slot n;

The time unit in which the first terminal triggers the re-evaluation of the selected resource, for example, the time unit in which the first terminal triggers the re-evaluation of the selected resource is the time slot mT ₃ in the above-mentioned FIG. 6 ;

The difference between the time unit at which the first terminal triggers re-evaluation of the selected resource and N2 time units, where N2 is a positive integer, for example, the time unit at which the first terminal triggers the re-evaluation of the selected resource is the above-mentioned FIG. 6 time slot mT ₃ in ;

The time unit in which the first terminal triggers the judgment on whether the selected resource is preempted by other terminals, for example, the time unit in which the first terminal triggers the judgment on whether the selected resource is preempted by other terminals is the time slot mT in the above-mentioned FIG. 7 ₃ ;

The difference between the time unit when the first terminal triggers the judgment on whether the selected resource is preempted by other terminals and N3 time units, where N3 is a positive integer, for example, the first terminal triggers the judgment on whether the selected resource is preempted by other terminals. The determined time unit is the time slot mT ₃ in the above-mentioned FIG. 7 .

Optionally, N1 is pre-configured or agreed in a protocol; or,

N1 is configured or indicated by the network device; or,

N1 is determined based on the terminal implementation.

Optionally, N2 is pre-configured or agreed in a protocol; or,

N2 is configured or indicated by the network device; or,

N2 is determined based on the terminal implementation.

Optionally, N3 is pre-configured or agreed in a protocol; or,

N3 is configured or indicated by the network device; or,

N3 is determined based on the terminal implementation.

Optionally, in the first condition, some or all of the thresholds from the first threshold to the tenth threshold are pre-configured or agreed in the protocol; or, some or all of the thresholds from the first threshold to the tenth threshold are configured by the network device. or indicated; or, some or all of the thresholds from the first threshold to the tenth threshold are determined based on the implementation of the terminal.

It should be noted that each factor in the above-mentioned first condition can be combined arbitrarily on the premise of not conflicting, which is not limited in the present application.

Optionally, in some embodiments, the first information includes at least a first SL-RSRP threshold group or a first SL-RSRP threshold. That is, the first information includes at least one or a group of SL-RSRP thresholds.

Optionally, the first SL-RSRP threshold is the maximum value in the first SL-RSRP threshold group; or,

The first SL-RSRP threshold is the minimum value in the first SL-RSRP threshold group; or,

The first SL-RSRP threshold is an average value in the first SL-RSRP threshold group.

Optionally, the first SL-RSRP threshold group includes one of the following:

All SL-RSRP thresholds determined by the first terminal according to the priority of the data to be sent;

the SL-RSRP threshold determined by the first terminal according to the priority of the data to be sent and the priority less than the priority threshold;

Each SL-RSRP threshold in the second set of SL-RSRP thresholds increases or decreases a set of SL-RSRP thresholds by an offset of L decibels (dB).

For example, the first SL-RSRP threshold group includes: all SL-RSRP thresholds determined by the first terminal according to the priorities of the data to be sent, such as a certain row in Table 1 above. Considering that the first terminal may raise the SL-RSRP threshold multiple times, the first SL-RSRP threshold group includes: after the SL-RSRP threshold is not raised or the SL-RSRP threshold is raised for the last time, the first terminal according to its own data to be sent The priority is determined by all SL-RSRP thresholds. In other words, the first SL-RSRP threshold group includes: SL-RSRP thresholds determined by the first terminal according to the priority of the data to be sent by the first terminal and all possible priorities.

For another example, the first SL-RSRP threshold group includes: the SL-RSRP threshold determined by the first terminal according to the priority of the data to be sent by the first terminal and the priority greater than or less than the priority threshold value. Considering that the first terminal may raise the SL-RSRP threshold multiple times, the first SL-RSRP threshold group includes: after the SL-RSRP threshold is not raised or the SL-RSRP threshold is raised for the last time, the first terminal according to its own data to be sent The SL-RSRP threshold determined by the priority and the priority greater or less than the priority threshold value.

Optionally, the priority threshold value is pre-configured or agreed in a protocol; or,

The priority threshold is configured or indicated by the network device; or,

The priority threshold value is determined based on the terminal implementation.

Optionally, the second SL-RSRP threshold group includes one of the following:

Optionally, L is pre-configured or agreed in a protocol; or,

L is configured or indicated by the network device; or,

L is determined based on the terminal implementation.

In some embodiments, after receiving the first information, the second terminal may construct a first resource set according to the first information. For example, the second terminal performs Step 1 to determine the candidate resource set according to the first RSRP threshold group or the first RSRP threshold in the first information, and the candidate resource set is the first resource set. Further, the second terminal sends the first resource set to the first terminal. The first terminal uses the first resource set to perform resource exclusion and/or resource selection. For example, the first terminal excludes resources that belong to/do not belong to the first resource set from the candidate resource set that has completed the above Step 1. Or the first terminal selects resources to send data from the intersection of the candidate resource set that has completed the above Step 1 and the first resource set. Or if the selected resource is not in the first resource set, the first terminal triggers resource reselection for the selected resource.

Optionally, in some embodiments, after receiving the first information, the second terminal increases or decreases φdB for the first RSRP threshold group or the first RSRP threshold, and then uses the increased or decreased RSRP threshold group. Or the RSRP threshold determines the first resource set. For example, first increase or decrease φdB, and use the threshold group or threshold to perform the above Step 1 to determine the candidate resource set.

Therefore, in the embodiments of the present application, conditions for triggering inter-terminal cooperation are provided, so that inter-terminal cooperation can be triggered at an appropriate time, and the sideline transmission performance in scenarios with hidden station, half-duplex and other problems can be improved.

The method embodiments of the present application are described in detail above with reference to FIG. 10 , and the device embodiments of the present application are described in detail below with reference to FIGS. 11 to 14 . It should be understood that the device embodiments and the method embodiments correspond to each other, and similar descriptions may be See method examples.

FIG. 11 shows a schematic block diagram of a terminal device 300 according to an embodiment of the present application. As shown in FIG. 11 , the terminal device 300 is a first terminal, and the terminal device 300 includes:

The communication unit 310 is configured to send first information to the second terminal when the first condition is satisfied, where the first information is used to trigger cooperation between terminals.

Optionally, the first condition includes at least one of the following:

The channel busy rate CBR measured by the first terminal is greater than the first threshold, or the CBR measured by the first terminal is less than the first threshold;

The channel occupancy rate CR measured by the first terminal is greater than the second threshold, or the CR measured by the first terminal is less than the second threshold;

After the first terminal performs the candidate resource exclusion based on the unlistened time slot and/or the candidate resource exclusion based on the sideline control information SCI sensed in the listening window, the number of resources in the candidate resource set is greater than the fifth threshold;

After the first terminal has performed the candidate resource exclusion based on the unlistened time slot and/or the candidate resource exclusion based on the SCI heard in the listening window, the number of resources in the candidate resource set is the same as the initial number in the candidate resource set. The ratio of the number of resources is greater than the sixth threshold;

The SL-RSRP threshold of all sideline reference signal received powers used by the first terminal is greater than the seventh threshold, or the partial SL-RSRP threshold used by the first terminal is greater than the seventh threshold;

the first terminal is in the target time unit;

The first terminal triggers resource selection or reselection;

Optionally, the at least one priority is pre-configured or agreed in a protocol; or,

The at least one priority is configured or indicated by the network device; or,

The at least one priority is determined based on the terminal implementation.

Optionally, the multiple priorities are pre-configured or agreed in an agreement; or,

The multiple priorities are determined based on the terminal implementation.

Optionally, the multiple priorities are all priorities greater than the target priority, or the multiple priorities are all the priorities smaller than the target priority.

Optionally, the target priority is a priority that depends on terminal implementation; or,

The target priority is preconfigured or agreed upon by the protocol; or,

The target priority is configured or indicated by the network device.

Optionally, all SL-RSRP thresholds used by the first terminal include:

Optionally, the partial SL-RSRP threshold used by the first terminal includes:

Optionally, the target time unit includes at least one of the following:

The time unit in which the first terminal triggers resource selection or resource reselection;

The difference between the time unit when the first terminal triggers resource selection or resource reselection and N1 time units, where N1 is a positive integer;

The first terminal triggers a time unit for re-evaluating the selected resource;

The first terminal triggers the difference between the time unit for re-evaluating the selected resource and N2 time units, where N2 is a positive integer;

The first terminal triggers a time unit for judging whether the selected resource is preempted by other terminals;

The difference between the time unit when the first terminal triggers the judgment on whether the selected resource is preempted by other terminals and N3 time units, where N3 is a positive integer.

Optionally, N1 is pre-configured or agreed in a protocol; or,

N1 is configured or indicated by the network device; or,

N1 is determined based on the terminal implementation.

Optionally, N2 is pre-configured or agreed in a protocol; or,

N2 is configured or indicated by the network device; or,

N2 is determined based on the terminal implementation.

Optionally, N3 is pre-configured or agreed in a protocol; or,

N3 is configured or indicated by the network device; or,

N3 is determined based on the terminal implementation.

Optionally, the first information includes at least a first SL-RSRP threshold group or a first SL-RSRP threshold.

Optionally, the first SL-RSRP threshold group includes one of the following:

Each SL-RSRP threshold in the second set of SL-RSRP thresholds increases or decreases a set of SL-RSRP thresholds by an offset of L decibels.

The priority threshold is configured or indicated by the network device; or,

Optionally, the second SL-RSRP threshold group includes one of the following:

Optionally, L is pre-configured or agreed in a protocol; or,

L is configured or indicated by the network device; or,

L is determined based on the terminal implementation.

Optionally, in some embodiments, the above-mentioned communication unit may be a communication interface or a transceiver, or an input/output interface of a communication chip or a system-on-chip.

It should be understood that the terminal device 300 according to the embodiment of the present application may correspond to the first terminal in the method embodiment of the present application, and the above-mentioned and other operations and/or functions of the various units in the terminal device 300 are to achieve the one shown in FIG. 10 , respectively. The corresponding process of the first terminal in the method 200 is not repeated here for brevity.

FIG. 12 is a schematic structural diagram of a communication device 400 provided by an embodiment of the present application. The communication device 400 shown in FIG. 12 includes a processor 410, and the processor 410 can 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. 12 , the communication device 400 may further include a memory 420 . The processor 410 may call and run a computer program from the memory 420 to implement the methods in the embodiments of the present application.

The memory 420 may be a separate device independent of the processor 410 , or may be integrated in the processor 410 .

Optionally, as shown in FIG. 12 , the communication device 400 may further include a transceiver 430, and the processor 410 may control the transceiver 430 to communicate with other devices, specifically, may send information or data to other devices, or receive other Information or data sent by a device.

Among them, the transceiver 430 may include a transmitter and a receiver. The transceiver 430 may further include antennas, and the number of the antennas may be one or more.

Optionally, the communication device 400 may specifically be the terminal device of this embodiment of the present application, and the communication device 400 may implement the corresponding process implemented by the first terminal in each method of the embodiment of the present application, which is not repeated here for brevity. Repeat.

FIG. 13 is a schematic structural diagram of an apparatus according to an embodiment of the present application. The apparatus 500 shown in FIG. 13 includes a processor 510, and the processor 510 can call and run a computer program from a memory, so as to implement the method in the embodiment of the present application.

Optionally, as shown in FIG. 13 , the apparatus 500 may further include a memory 520 . The processor 510 may call and run a computer program from the memory 520 to implement the methods in the embodiments of the present application.

The memory 520 may be a separate device independent of the processor 510 , or may be integrated in the processor 510 .

Optionally, the apparatus 500 may further include an input interface 530 . The processor 510 may control the input interface 530 to communicate with other devices or chips, and specifically, may acquire information or data sent by other devices or chips.

Optionally, the apparatus 500 may further include an output interface 540 . The processor 510 may control the output interface 540 to communicate with other devices or chips, and specifically, may output information or data to other devices or chips.

Optionally, the apparatus may be applied to the terminal equipment in the embodiments of the present application, and the apparatus may implement the corresponding processes implemented by the first terminal in each method of the embodiments of the present application, which will not be repeated here for brevity.

Optionally, the device mentioned in the embodiment of the present application may also be a chip. For example, it can be a system-on-chip, a system-on-a-chip, a system-on-a-chip, or a system-on-a-chip.

FIG. 14 is a schematic block diagram of a communication system 600 provided by an embodiment of the present application. As shown in FIG. 14 , the communication system 600 includes a first terminal 610 and a second terminal 620 .

The first terminal 610 may be used to implement the corresponding functions implemented by the first terminal in the foregoing method, and for brevity, details are not described herein again.

It should be understood that the processor in this embodiment of the present application may be an integrated circuit chip, which has a signal processing capability. In the implementation process, each step of the above method embodiments may be completed by a hardware integrated logic circuit in a processor or an instruction in the form of software. The above-mentioned processor can 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 available Programming logic devices, discrete gate or transistor logic devices, discrete hardware components. The methods, steps, and logic block diagrams disclosed in the embodiments of this application can be implemented or executed. 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 conjunction with the embodiments of the present application can be directly embodied as being executed by a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor. The software modules may be located in random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, registers and other storage media mature in the art. The storage medium is located in the memory, and the processor reads the information in the memory, and completes the steps of the above method in combination with its hardware.

It can be understood that the memory in this embodiment of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory. Wherein, the non-volatile memory may be a read-only memory (Read-Only Memory, ROM), a programmable read-only memory (Programmable ROM, PROM), an erasable programmable read-only memory (Erasable PROM, EPROM), an electrically programmable read-only memory (Erasable PROM, EPROM). Erase programmable read-only memory (Electrically EPROM, EEPROM) or flash memory. Volatile memory may be Random Access Memory (RAM), which acts as an external cache. By way of illustration and not limitation, many forms of RAM are available, such as Static RAM (SRAM), Dynamic RAM (DRAM), 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 link dynamic random access memory (Synchlink DRAM, SLDRAM) ) and direct memory bus random access memory (Direct Rambus RAM, DR RAM). It should be noted that the memory of the systems and methods described herein is intended to include, but not be limited to, these and any other suitable types of memory.

It should be understood that the above memory is an example but not a limitative description, for example, the memory in the embodiment of the present application may also be a static random access memory (static RAM, SRAM), a dynamic random access memory (dynamic RAM, DRAM), 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 (synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM) and so on. That is, the memory in the embodiments of the present application is intended to include but not limited to these and any other suitable types of memory.

Embodiments of the present application further provide a computer-readable storage medium for storing a computer program.

Optionally, the computer-readable storage medium can be applied to the terminal device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the first terminal in each method of the embodiments of the present application. This will not be repeated here.

Embodiments of the present application also provide a computer program product, including computer program instructions.

Optionally, the computer program product can be applied to the terminal device in the embodiments of the present application, and the computer program instructions cause the computer to execute the corresponding processes implemented by the first terminal in each method of the embodiments of the present application. For brevity, here No longer.

The embodiments of the present application also provide a computer program.

Optionally, the computer program can be applied to the terminal device in the embodiment of the present application, and when the computer program is run on the computer, the computer executes the corresponding process implemented by the first terminal in each method of the embodiment of the present application, in order to It is concise and will not be repeated here.

Those of ordinary skill in the art can realize that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Skilled artisans may implement the described functionality using different methods for each particular application, but such implementations should not be considered beyond the scope of this application.

Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the above-described systems, devices and units may refer to the corresponding processes in the foregoing method embodiments, which will not be repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the apparatus embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not implemented. On the other hand, the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of 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 components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution in this embodiment.

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

The functions, if implemented in the form of software functional units and sold or used as independent products, may be stored in a computer-readable storage medium. For such understanding, the technical solution of the present application can be embodied in the form of a software product in essence, or the part that contributes to the prior art or the part of the technical solution. The computer software product is stored in a storage medium, including Several instructions are used to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk and other media that can store program codes .

The above are only specific embodiments of the present application, but the protection scope of the present application is not limited to this. should be covered within the scope of protection of this application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

A method of wireless communication, comprising:

When the first condition is satisfied, the first terminal sends first information to the second terminal, where the first information is used to trigger inter-terminal cooperation.
The method of claim 1, wherein the first condition comprises at least one of the following:

The channel busy rate CBR measured by the first terminal is greater than the first threshold, or the CBR measured by the first terminal is less than the first threshold;

The channel occupancy rate CR measured by the first terminal is greater than the second threshold, or the CR measured by the first terminal is less than the second threshold;

The CR measured by the first terminal for at least one priority is greater than a third threshold, or the CR measured by the first terminal for at least one priority is less than the third threshold;

The sum of the CRs measured by the first terminal for multiple priorities is greater than the fourth threshold, or the sum of the CRs measured by the first terminal for multiple priorities is less than the fourth threshold;

After the first terminal has performed the candidate resource exclusion based on the unlistened time slot and/or the candidate resource exclusion based on the sideline control information SCI heard in the listening window, the number of resources in the candidate resource set is greater than the number of resources in the candidate resource set. five thresholds;

After the first terminal has performed the candidate resource exclusion based on the unlistened time slot and/or the candidate resource exclusion based on the SCI heard in the listening window, the number of resources in the candidate resource set is the same as the initial value in the candidate resource set. The ratio of the number of resources is greater than the sixth threshold;

The SL-RSRP threshold of all the sideline reference signal received powers used by the first terminal is greater than the seventh threshold, or the partial SL-RSRP threshold used by the first terminal is greater than the seventh threshold;

The number of retransmissions of the data to be transmitted by the first terminal is greater than the eighth threshold, or the number of retransmissions of the data to be transmitted by the first terminal is less than the eighth threshold;

The first terminal determines that the number of conflicts is greater than the ninth threshold, and the conflicts include at least one of conflicts between uplink transmission and sideline transmission, sideline transmission and sideline transmission conflicts, and sideline transmission and sideline reception conflicts;

the first terminal is in the target time unit;

the first terminal triggers resource selection or reselection;

the first terminal triggers a re-evaluation process for the selected resource;

The first terminal triggers a process of judging whether the selected resource is preempted by other terminals;

The threshold for triggering the first terminal to repeatedly perform candidate resource exclusion based on unlistened time slots and/or candidate resource exclusion based on SCIs heard within the listening window is greater than or equal to the tenth threshold.
The method of claim 2, wherein:

The at least one priority is pre-configured or agreed in a protocol; or,

The at least one priority is configured or indicated by the network device; or,

The at least one priority is determined based on terminal implementation.
The method of claim 2, wherein:

The multiple priorities are pre-configured or agreed upon in a protocol; or,

The multiple priorities are configured or indicated by the network device; or,

The plurality of priorities are determined based on terminal implementation.
The method of claim 2 or 4, wherein,

The multiple priorities are all priorities greater than the target priority, or the multiple priorities are all the priorities smaller than the target priority.
The method of claim 5, wherein:

The target priority is a priority that depends on terminal implementation; or,

The target priority is pre-configured or agreed in a protocol; or,

The target priority is configured or indicated by the network device.
The method of claim 2, wherein all SL-RSRP thresholds used by the first terminal include:

During the process that the first terminal performs the candidate resource exclusion based on the unlistened time slot and/or the candidate resource exclusion based on the SCI heard in the listening window, the first terminal according to the listening window All SL-RSRP thresholds determined by the priority carried by the received SCI and the priority of the data to be sent; or,

All SL-RSRP thresholds determined by the first terminal according to the priority of the data to be sent.
The method according to claim 2, wherein the partial SL-RSRP threshold used by the first terminal comprises:

During the process that the first terminal performs candidate resource exclusion based on unlistened time slots and/or candidate resource exclusion based on the SCI heard within the listening window, the first terminal performs The priority carried in the control information is greater than the priority threshold and the SL-RSRP threshold determined by the priority of the data to be sent; or,

During the process that the first terminal performs candidate resource exclusion based on unlistened time slots and/or candidate resource exclusion based on the SCI heard within the listening window, the first terminal performs The priority carried in the control information is less than the priority threshold and the SL-RSRP threshold determined by the priority of the data to be sent; or,

the SL-RSRP threshold determined by the first terminal according to the priority of the data to be sent and the priority greater than the priority threshold;

The first terminal determines the SL-RSRP threshold according to the priority of the data to be sent and the priority less than the priority threshold.
The method of claim 2, wherein the target time unit comprises at least one of the following:

a time unit in which the first terminal triggers resource selection or resource reselection;

the difference between the time unit when the first terminal triggers resource selection or resource reselection and N1 time units, where N1 is a positive integer;

the first terminal triggers a time unit for re-evaluating the selected resource;

the difference between the time unit that is triggered by the first terminal to re-evaluate the selected resource and N2 time units, where N2 is a positive integer;

a time unit for the first terminal to trigger the judgment on whether the selected resource is preempted by other terminals;

The difference between the time unit when the first terminal triggers the judgment on whether the selected resource is preempted by other terminals and N3 time units, where N3 is a positive integer.
The method of claim 9, wherein:

N1 is pre-configured or agreed in the protocol; or,

N1 is configured or indicated by the network device; or,

N1 is determined based on the terminal implementation.
The method of claim 9, wherein:

N2 is pre-configured or agreed upon by the protocol; or,

N2 is configured or indicated by the network device; or,

N2 is determined based on the terminal implementation.
The method of claim 9, wherein:

N3 is pre-configured or agreed upon by the protocol; or,

N3 is configured or indicated by the network device; or,

N3 is determined based on the terminal implementation.
The method according to any one of claims 1 to 12, wherein the first information includes at least a first SL-RSRP threshold group or a first SL-RSRP threshold.
The method of claim 13, wherein:

The first SL-RSRP threshold is the maximum value in the first SL-RSRP threshold group; or,

The first SL-RSRP threshold is the minimum value in the first SL-RSRP threshold group; or,

The first SL-RSRP threshold is an average value in the first SL-RSRP threshold group.
The method of claim 13 or 14, wherein the first SL-RSRP threshold group includes one of the following:

All SL-RSRP thresholds determined by the first terminal according to the priority of the data to be sent;

the SL-RSRP threshold determined by the first terminal according to the priority of the data to be sent and the priority greater than the priority threshold;

the SL-RSRP threshold determined by the first terminal according to the priority of the data to be sent and the priority less than the priority threshold;

Each SL-RSRP threshold in the second set of SL-RSRP thresholds is a set of SL-RSRP thresholds formed by increasing or decreasing an offset of L decibels.
The method of claim 8 or 15, wherein,

The priority threshold value is pre-configured or agreed in a protocol; or,

The priority threshold value is configured or indicated by the network device; or,

The priority threshold value is determined based on terminal implementation.
The method of claim 15, wherein the second SL-RSRP threshold group comprises one of the following:

All SL-RSRP thresholds determined by the first terminal according to the priority of the data to be sent;

the SL-RSRP threshold determined by the first terminal according to the priority of the data to be sent and the priority greater than the priority threshold;

The first terminal determines the SL-RSRP threshold according to the priority of the data to be sent and the priority less than the priority threshold.
The method of claim 15, wherein:

L is pre-configured or agreed in the protocol; or,

L is configured or indicated by the network device; or,

L is determined based on the terminal implementation.
A terminal device, characterized in that the terminal device is a first terminal, and the terminal device includes:

The communication unit is configured to send first information to the second terminal when the first condition is satisfied, where the first information is used to trigger cooperation between terminals.
The terminal device according to claim 19, wherein the first condition includes at least one of the following:

The channel busy rate CBR measured by the first terminal is greater than the first threshold, or the CBR measured by the first terminal is less than the first threshold;

The channel occupancy rate CR measured by the first terminal is greater than the second threshold, or the CR measured by the first terminal is less than the second threshold;

The CR measured by the first terminal for at least one priority is greater than a third threshold, or the CR measured by the first terminal for at least one priority is less than the third threshold;

The sum of the CRs measured by the first terminal for multiple priorities is greater than the fourth threshold, or the sum of the CRs measured by the first terminal for multiple priorities is less than the fourth threshold;

After the first terminal has performed the candidate resource exclusion based on the unlistened time slot and/or the candidate resource exclusion based on the sideline control information SCI heard in the listening window, the number of resources in the candidate resource set is greater than the number of resources in the candidate resource set. five thresholds;

After the first terminal executes the candidate resource exclusion based on the unlistened time slot and/or the candidate resource exclusion based on the SCI detected in the listening window, the number of resources in the candidate resource set is the same as the initial value in the candidate resource set. The ratio of the number of resources is greater than the sixth threshold;

The SL-RSRP threshold of all sideline reference signal received powers used by the first terminal is greater than the seventh threshold, or the partial SL-RSRP threshold used by the first terminal is greater than the seventh threshold;

The number of retransmissions of the data to be transmitted by the first terminal is greater than the eighth threshold, or the number of retransmissions of the data to be transmitted by the first terminal is less than the eighth threshold;

The first terminal determines that the number of times of conflict is greater than the ninth threshold, and the conflict includes at least one of a conflict between uplink transmission and sideline transmission, a conflict between sideline transmission and sideline transmission, and a conflict between sideline transmission and sideline reception;

the first terminal is in the target time unit;

the first terminal triggers resource selection or reselection;

the first terminal triggers a re-evaluation process for the selected resource;

The first terminal triggers a process of judging whether the selected resource is preempted by other terminals;

The threshold for triggering the first terminal to repeatedly perform candidate resource exclusion based on unlistened time slots and/or candidate resource exclusion based on SCIs heard within the listening window is greater than or equal to the tenth threshold.
The terminal device according to claim 20, wherein,

The at least one priority is pre-configured or agreed in a protocol; or,

The at least one priority is configured or indicated by the network device; or,

The at least one priority is determined based on terminal implementation.
The terminal device according to claim 20, wherein,

The multiple priorities are pre-configured or agreed upon in a protocol; or,

The multiple priorities are configured or indicated by the network device; or,

The plurality of priorities are determined based on terminal implementation.
The terminal device according to claim 20 or 22, wherein,

The multiple priorities are all priorities greater than the target priority, or the multiple priorities are all the priorities smaller than the target priority.
The terminal device of claim 23, wherein:

The target priority is a priority that depends on terminal implementation; or,

The target priority is pre-configured or agreed in a protocol; or,

The target priority is configured or indicated by the network device.
The terminal device according to claim 20, wherein all SL-RSRP thresholds used by the first terminal include:

During the process that the first terminal performs the candidate resource exclusion based on the unlistened time slot and/or the candidate resource exclusion based on the SCI detected in the listening window, the first terminal according to the listening window All SL-RSRP thresholds determined by the priority carried by the received SCI and the priority of the data to be sent; or,

All SL-RSRP thresholds determined by the first terminal according to the priority of the data to be sent.
The terminal device according to claim 20, wherein the partial SL-RSRP threshold used by the first terminal comprises:

During the process that the first terminal performs candidate resource exclusion based on unlistened time slots and/or candidate resource exclusion based on the SCI heard in the listening window, the first terminal performs The priority carried in the control information is greater than the priority threshold and the SL-RSRP threshold determined by the priority of the data to be sent; or,

During the process that the first terminal performs candidate resource exclusion based on unlistened time slots and/or candidate resource exclusion based on the SCI heard in the listening window, the first terminal performs The priority carried in the control information is less than the priority threshold and the SL-RSRP threshold determined by the priority of the data to be sent; or,

the SL-RSRP threshold determined by the first terminal according to the priority of the data to be sent and the priority greater than the priority threshold;

The first terminal determines the SL-RSRP threshold according to the priority of the data to be sent and the priority less than the priority threshold.
The terminal device according to claim 20, wherein the target time unit comprises at least one of the following:

a time unit in which the first terminal triggers resource selection or resource reselection;

the difference between the time unit when the first terminal triggers resource selection or resource reselection and N1 time units, where N1 is a positive integer;

the first terminal triggers a time unit for re-evaluating the selected resource;

the difference between the time unit that is triggered by the first terminal to re-evaluate the selected resource and N2 time units, where N2 is a positive integer;

a time unit for the first terminal to trigger the judgment on whether the selected resource is preempted by other terminals;

The difference between the time unit when the first terminal triggers the judgment on whether the selected resource is preempted by other terminals and N3 time units, where N3 is a positive integer.
The terminal device of claim 27, wherein,

N1 is pre-configured or agreed in the protocol; or,

N1 is configured or indicated by the network device; or,

N1 is determined based on the terminal implementation.
The terminal device of claim 27, wherein,

N2 is pre-configured or agreed upon by the protocol; or,

N2 is configured or indicated by the network device; or,

N2 is determined based on the terminal implementation.
The terminal device of claim 27, wherein,

N3 is pre-configured or agreed upon by the protocol; or,

N3 is configured or indicated by the network device; or,

N3 is determined based on the terminal implementation.
The terminal device according to any one of claims 19 to 30, wherein the first information includes at least a first SL-RSRP threshold group or a first SL-RSRP threshold.
The terminal device of claim 31, wherein:

The first SL-RSRP threshold is the maximum value in the first SL-RSRP threshold group; or,

The first SL-RSRP threshold is the minimum value in the first SL-RSRP threshold group; or,

The first SL-RSRP threshold is an average value in the first SL-RSRP threshold group.
The terminal device according to claim 31 or 32, wherein the first SL-RSRP threshold group includes one of the following:

All SL-RSRP thresholds determined by the first terminal according to the priority of the data to be sent;

the SL-RSRP threshold determined by the first terminal according to the priority of the data to be sent and the priority greater than the priority threshold;

the SL-RSRP threshold determined by the first terminal according to the priority of the data to be sent and the priority less than the priority threshold;

Each SL-RSRP threshold in the second set of SL-RSRP thresholds increases or decreases a set of SL-RSRP thresholds by an offset of L decibels.
The terminal device according to claim 26 or 33, characterized in that,

The priority threshold value is pre-configured or agreed in a protocol; or,

The priority threshold value is configured or indicated by the network device; or,

The priority threshold value is determined based on terminal implementation.
The terminal device of claim 33, wherein the second SL-RSRP threshold group includes one of the following:

All SL-RSRP thresholds determined by the first terminal according to the priority of the data to be sent;

the SL-RSRP threshold determined by the first terminal according to the priority of the data to be sent and the priority greater than the priority threshold;

The first terminal determines the SL-RSRP threshold according to the priority of the data to be sent and the priority less than the priority threshold.
The terminal device of claim 33, wherein,

L is pre-configured or agreed in the protocol; or,

L is configured or indicated by the network device; or,

L is determined based on the terminal implementation.
A terminal device, characterized in that it comprises: a processor and a memory, the memory is used to store a computer program, the processor is used to call and run the computer program stored in the memory, and execute any one of claims 1 to 18. one of the methods described.
A chip, characterized by comprising: a processor for calling and running a computer program from a memory, so that a device installed with the chip executes the method according to any one of claims 1 to 18 .
A computer-readable storage medium, characterized by being used for storing a computer program, the computer program causing a computer to execute the method according to any one of claims 1 to 18.
A computer program product comprising computer program instructions, the computer program instructions causing a computer to perform the method of any one of claims 1 to 18.
A computer program, characterized in that the computer program causes a computer to perform the method according to any one of claims 1 to 18.