CN116438873A

CN116438873A - Wireless communication method and terminal equipment

Info

Publication number: CN116438873A
Application number: CN202080105897.8A
Authority: CN
Inventors: 丁伊; 张世昌; 赵振山; 林晖闵
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2020-12-28
Filing date: 2020-12-28
Publication date: 2023-07-14
Also published as: WO2022140934A1

Abstract

The embodiment of the application provides a wireless communication method and terminal equipment, and provides conditions for triggering cooperation between terminals, so that cooperation between terminals can be triggered at proper time, and side transmission performance under the scene of hidden station, half duplex and other problems is improved. The method of wireless communication includes: and under the condition that the first condition is met, the first terminal sends first information to the second terminal, wherein the first information is used for triggering cooperation between the terminals.

Description

Wireless communication method and terminal equipment

Technical Field

The embodiment of the application relates to the field of communication, and more particularly, to a method and terminal equipment for wireless communication.

Background

Under some sidestream transmission scenes, such as scenes with problems of hidden stations, half duplex and the like, sidestream transmission performance can be improved through cooperation among terminals. However, how to trigger inter-terminal cooperation is a problem to be solved.

Disclosure of Invention

The embodiment of the application provides a wireless communication method and terminal equipment, and provides conditions for triggering cooperation between terminals, so that cooperation between terminals can be triggered at proper time, and side transmission performance under the scene of hidden station, half duplex and other problems is improved.

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

and under the condition that the first condition is met, the first terminal sends first information to the second terminal, wherein the first information is used for triggering cooperation between the terminals.

In a second aspect, a terminal device is provided for performing the method in the first aspect.

Specifically, the terminal device comprises functional modules for performing the method in the first aspect described above.

In a third aspect, a terminal device is provided comprising a processor and a memory. The memory is used for storing a computer program, and the processor is used for calling and running the computer program stored in the memory to execute the method in the first aspect.

In a fourth aspect, there is provided an apparatus for implementing the method of the first aspect.

Specifically, the device comprises: a processor for calling and running a computer program from a memory, causing a device in which the apparatus is installed to perform the method as in the first aspect described above.

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

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

By the technical scheme, the condition for triggering the cooperation between the terminals is provided, so that the cooperation between the terminals can be triggered at a proper time, and the sidestream transmission performance under the scene with the problems of hidden stations, half duplex and the like is improved.

Drawings

Fig. 1 is a schematic diagram of a communication system architecture provided herein.

Fig. 2 is a schematic diagram of another communication system architecture provided herein.

Fig. 3 is a schematic diagram of the physical layer structure of NR-V2X provided herein.

Fig. 4 is a schematic diagram of the resource reservation of NR-V2X provided herein.

FIG. 5 is a schematic diagram of NR-V2X resource selection or resource reselection provided herein.

FIG. 6 is a schematic diagram of NR-V2X resource re-assessment provided herein.

FIG. 7 is a schematic diagram of NR-V2X resource preemption provided herein.

Fig. 8 is a schematic diagram of a concealment station provided herein.

FIG. 9 is a schematic diagram of the measurement CBR/CR provided herein.

Fig. 10 is a schematic flow chart diagram of a method of wireless communication provided in accordance with an embodiment of the present application.

Fig. 11 is a schematic block diagram of a terminal device 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 in accordance with an embodiment of the present application.

Fig. 14 is a schematic block diagram of a communication system provided in accordance with an embodiment of the present application.

Detailed Description

The following description of the technical solutions in the embodiments of the present application will be made with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden for the embodiments herein, are intended to be within the scope of the present application.

The technical solution of the embodiment of the application can be applied to various communication systems, for example: global system for mobile communications (Global System of Mobile communication, GSM), code division multiple access (Code Division Multiple Access, CDMA), wideband code division multiple access (Wideband Code Division Multiple Access, WCDMA) systems, general packet Radio service (General Packet Radio Service, GPRS), long term evolution (Long Term Evolution, LTE) systems, long term evolution advanced (Advanced long term evolution, LTE-a) systems, new Radio, NR) systems, NR system evolution systems, LTE-based access to unlicensed spectrum on unlicensed spectrum, NR-based access to unlicensed spectrum, NR-U on unlicensed spectrum, non-terrestrial communication network (Non-Terrestrial Networks, NTN) systems, universal mobile communication system (Universal Mobile Telecommunication System, UMTS), wireless local area network (Wireless Local Area Networks, WLAN), wireless fidelity (Wireless Fidelity, wiFi), fifth Generation communication (5 th-Generation, 5G) systems, or other communication systems, etc.

Generally, the number of connections supported by the conventional communication system is limited and easy to implement, however, with the development of communication technology, the mobile communication system will support not only conventional communication but also, for example, device-to-Device (D2D) communication, machine-to-machine (Machine to Machine, M2M) communication, machine type communication (Machine Type Communication, MTC), inter-vehicle (Vehicle to Vehicle, V2V) communication, or internet of vehicles (Vehicle to everything, V2X) communication, etc., and the embodiments of the present application may also be applied to these communication systems.

Optionally, the communication system in the embodiment of the present application may be applied to a carrier aggregation (Carrier Aggregation, CA) scenario, a dual connectivity (Dual Connectivity, DC) scenario, and a Stand Alone (SA) fabric scenario.

Optionally, the communication system in the embodiments of the present application may be applied to unlicensed spectrum, where unlicensed spectrum may also be considered as shared spectrum; alternatively, the communication system in the embodiments of the present application may also be applied to licensed spectrum, where licensed spectrum may also be considered as non-shared spectrum.

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

The terminal device may be a STATION (ST) in a WLAN, may be a cellular telephone, a cordless telephone, a session initiation protocol (Session Initiation Protocol, SIP) phone, a wireless local loop (Wireless Local Loop, WLL) STATION, a personal digital assistant (Personal Digital Assistant, PDA) device, a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, a vehicle mounted device, a wearable device, a terminal device in a next generation communication system such as an NR network, or a terminal device in a future evolved public land mobile network (Public Land Mobile Network, PLMN) network, etc.

In embodiments of the present application, the terminal device may be deployed on land, including indoor or outdoor, hand-held, wearable or vehicle-mounted; can also be deployed on the water surface (such as ships, etc.); but may also be deployed in the air (e.g., on aircraft, balloon, satellite, etc.).

In the embodiment of the present application, the terminal device may be a Mobile Phone (Mobile Phone), a tablet computer (Pad), a computer with a wireless transceiving function, a Virtual Reality (VR) terminal device, an augmented Reality (Augmented Reality, AR) terminal device, a wireless terminal device in industrial control (industrial control), a wireless terminal device in unmanned driving (self driving), a wireless terminal device in remote medical (remote medical), a wireless terminal device in smart grid (smart grid), a wireless terminal device in transportation security (transportation safety), a wireless terminal device in smart city (smart city), or a wireless terminal device in smart home (smart home), and the like.

By way of example, and not limitation, in embodiments of the present application, the terminal device may also be a wearable device. The wearable device can also be called as a wearable intelligent device, and is a generic name for intelligently designing daily wear by applying wearable technology and developing wearable devices, such as glasses, gloves, watches, clothes, shoes and the like. The wearable device is a portable device that is worn directly on the body or integrated into the clothing or accessories of the user. The wearable device is not only a hardware device, but also can realize a powerful function through software support, data interaction and cloud interaction. The generalized wearable intelligent device includes full functionality, large size, and may not rely on the smart phone to implement complete or partial functionality, such as: smart watches or smart glasses, etc., and focus on only certain types of application functions, and need to be used in combination with other devices, such as smart phones, for example, various 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, where the network device may be an Access Point (AP) in a WLAN, a base station (Base Transceiver Station, BTS) in GSM or CDMA, a base station (NodeB, NB) in WCDMA, an evolved base station (Evolutional Node B, eNB or eNodeB) in LTE, a relay station or an Access Point, a vehicle device, a wearable device, a network device or a base station (gNB) in an NR network, a network device in a PLMN network of future evolution, or a network device in an NTN network, etc.

By way of example and not limitation, in embodiments of the present application, a network device may have a mobile nature, e.g., the network device may be a mobile device. Alternatively, the network device may be a satellite, a balloon station. For example, the satellite may be a Low Earth Orbit (LEO) satellite, a medium earth orbit (medium earth orbit, MEO) satellite, a geosynchronous orbit (geostationary earth orbit, GEO) satellite, a high elliptical orbit (High Elliptical Orbit, HEO) satellite, or the like. Alternatively, the network device may be a base station disposed on land, in a water area, or the like.

In this embodiment of the present application, a network device may provide a service for a cell, where a terminal device communicates with the network device through a transmission resource (e.g., a frequency domain resource, or a spectrum resource) used by the cell, where the cell may be a cell corresponding to a network device (e.g., a base station), and the cell may belong to a macro base station, or may belong to a base station corresponding to a Small cell (Small cell), where the Small cell may include: urban cells (Metro cells), micro cells (Micro cells), pico cells (Pico cells), femto cells (Femto cells) and the like, and the small cells have the characteristics of small coverage area and low transmitting power and are suitable for providing high-rate data transmission services.

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

The terminology used in the description section of the present application is for the purpose of describing particular embodiments of the present application only and is not intended to be limiting of the present application. The terms "first," "second," "third," and "fourth" and the like in the description and in the claims of this application and in the drawings, are used for distinguishing between different objects and not for describing a particular sequential order. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion.

It should be understood that, in the embodiments of the present application, the "indication" may be a direct indication, an indirect indication, or an indication having an association relationship. For example, a indicates B, which may mean that a indicates B directly, e.g., B may be obtained by a; it may also indicate that a indicates B indirectly, e.g. a indicates C, B may be obtained by C; it may also be indicated that there is an association between a and B.

In the description of the embodiments of the present application, the term "corresponding" may indicate that there is a direct correspondence or an indirect correspondence between the two, or may indicate that there is an association between the two, or may indicate a relationship between the two and the indicated, configured, or the like.

In the embodiment of the present application, the "predefining" may be implemented by pre-storing corresponding codes, tables or other manners that may be used to indicate relevant information in devices (including, for example, terminal devices and network devices), and the specific implementation of the present application is not limited. Such as predefined may refer to what is defined in the protocol.

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

Fig. 1 is a schematic diagram of a communication system to which embodiments of the present application are applicable. The transmission resources of the in-vehicle terminals (in-vehicle terminal 121 and in-vehicle terminal 122) are allocated by the base station 110, and the in-vehicle terminals transmit data on the side links 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 embodiments of the present application are applicable. The vehicle-mounted terminals (the vehicle-mounted terminal 131 and the vehicle-mounted terminal 132) autonomously select transmission resources on the resources of the side links to perform data transmission. Optionally, the vehicle-mounted terminal may select the transmission resource randomly, or select the transmission resource by listening.

For a better understanding of embodiments of the present application, the NR-V2X physical layer structure associated with the present application is described.

In NR-V2X, automatic driving needs to be supported, and thus, higher demands are placed on 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 fig. 3, where a physical sidelink control channel (Physical Sidelink Control Channel, PSCCH) is used to transmit first sidelink control information (Sidelink Control Information, SCI), and a physical sidelink shared channel (Physical Sidelink Shared Channel, PSSCH) is used to carry data and second SCI, PSCCH and PSSCH are transmitted in the same time slot.

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

In the NR-V2X, the terminal selects the resource to transmit data by itself in the communication system shown in fig. 2. The resource reservation is a precondition for the selection of resources.

The resource reservation refers to the terminal transmitting in the PSCCH the resources to be used next by the first SCI reservation. In NR-V2X, resource reservation within Transport Blocks (TBs) is supported as well as resource reservation between TBs, as shown in fig. 4.

The terminal transmits the first SCI, indicating the N time-frequency resources (including the resources used for the current transmission) of the current TB using the "time-domain resource allocation (Time resource assignment)" and "frequency-domain resource allocation (Frequency resource assignment)" fields therein. Wherein N.ltoreq.Nmax, in NR-V2X, nmax is equal to 2 or 3. Meanwhile, the 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 primary transmission data in the PSCCH and simultaneously sends the first SCI in the PSCCH, and indicates the time-frequency resource positions of the primary transmission and the retransmission 1 (i.e., n=2 at this time) by using the two domains, i.e., reserves the time-frequency resource of the retransmission 1. And, the primary transmission and retransmission 1 are distributed over 32 slots in the time domain. Similarly, in TB 1 shown in fig. 4, the terminal indicates the time-frequency resources of retransmission 1 and retransmission 2 by using the first SCI transmitted in the PSCCH of retransmission 1, and the retransmissions 1 and 2 are distributed in 32 slots in the time domain.

Meanwhile, the terminal performs resource reservation between TBs using a "resource reservation period (Resource reservation period)" field when transmitting the first SCI. For example, in FIG. 4, the terminal is transmitting the first transmission of TB 1At SCI, the time-frequency resource locations of TB 1 primary transmission and retransmission 1 are indicated by the "Time resource assignment" and "Frequency resource assignment" fields, denoted as { (t) ₁ ,f ₁ ),(t ₂ ,f ₂ ) }. Wherein t is ₁ 、t ₂ Representing the time domain position of TB 1 primary transmission and retransmission 1 resource, f ₁ 、f ₂ Representing the corresponding frequency domain location. If the value of the "Resource reservation period" field in the first SCI is 100 ms, the first SCI indicates the time-frequency resource { (t) ₁ +100,f ₁ ),(t ₂ +100,f ₂ ) These two resources are used for transmission of TB 2 primary transmission and retransmission 1. Similarly, the first SCI sent in TB 1 retransmission 1 also reserves time-frequency resources for TB 2 retransmission 1 and retransmission 2 using the "Resource reservation period" field. In NR V2X, the possible values of the 'Resource reservation period' domain are 0, 1-99, 100, 200, 300, 400, 500, 600, 700, 800, 900, 1000 milliseconds, which is more flexible than LTE V2X. But in each resource pool, only e values are configured, and the terminal determines the values possibly used according to the used resource pools. E values in the resource pool configuration are recorded as a resource reservation period set M, and e is illustratively less than or equal to 16.

In addition, through network configuration or pre-configuration, the reservation between TBs can be activated or deactivated in resource pool units. When the inter-TB reservation is deactivated, the "Resource reservation period" field is not included in the first SCI. In general, before triggering the resource reselection, the value of the "Resource reservation period" domain used by the terminal, that is, the resource reservation period is not changed, and each time the terminal sends the first SCI, the terminal reserves the resource of the next period by using the "Resource reservation period" domain therein for the transmission of another TB, thereby achieving periodic semi-continuous transmission.

When UE 1 operates in the communication system shown in fig. 2, UE 1 may obtain the first SCI sent by other UEs by listening to PSCCH sent by other UEs, so as to learn resources reserved by other UEs. When the UE 1 selects the resources, the resources reserved by other UEs are eliminated, so that the collision of the resources is avoided.

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 a resource selection or reselection at time slot n, and the resource selection window starts from n+t1 to n+t2. 0 <＝T1<＝T _proc,1 When the subcarrier spacing is 15, 30, 60, 120kHz, T _proc,1 Is 3,5,9, 17 slots. T2 _min <＝T2<Residual delay budget for traffic, T2 _min The value set of (2) is {1,5,10,20 }) ^μ A time slot in which μ=0, 1,2,3 corresponds to the case where the subcarrier spacing is 15, 30, 60, 120kHz, the terminal determines T2 from the value set according to the priority of the data to be transmitted by itself _min . For example, when the subcarrier spacing is 15kHz, the terminal determines T2 from the set {1,5,10,20} according to the priority of the data to be transmitted by itself _min . When T2 _min And when the residual delay budget of the service is larger than or equal to the residual delay budget of the service, T2 is equal to the residual delay budget of the service. The residual delay budget is the difference between the corresponding time of the delay requirement of the data and the current time. For example, the delay requirement of the packet arriving at the time slot n is 50 ms, assuming that one time slot is 1 ms, if the current time is the time slot n, the residual delay budget is 50 ms, and if the current time is the time slot n+20, the residual delay budget is 30 ms.

Terminals at n-T0 to n-T _proc,0 Resource interception is performed, and the value of T0 is 100 or 1100 milliseconds. When the subcarrier spacing is 15, 30, 60, 120kHz,

T

_proc,0 1,2,4 slots. In practice, the terminal listens to the first side control information transmitted by other terminals in each time slot (except its own transmission time slot), and after the time slot n triggers the resource selection or reselection, the terminal uses n-T0 to n-T _proc,0 And (5) a result of resource interception.

Step (Step) 1:

the terminal uses all available resources belonging to the resource pool used by the terminal in the resource selection window as a resource set A, any one resource in the set AThe source is denoted as R (x, y), x and y indicating the frequency domain location and the time domain location of the resource, respectively. The initial number of resources in set A is recorded as M _total 。

Step 1-1: if the terminal transmits data in the time slot m in the interception window and does not intercept, the terminal judges whether the time slot m+q Prxlg is overlapped with the resource R (x, y+j Ptxlg), and if so, the resource R (x, y) is excluded from the resource set A. Where j=0, 1,2,3 … C-1, C is determined by a random count (counter) value generated by the terminal, which is randomly generated by the terminal (a positive integer) when selecting resources to determine how many cycles to reserve for the resources to be selected. Ptxlg is the number of Ptx converted into logical time slots, ptx is the resource reservation period determined by the terminal performing the resource selection, and is one of the values in the resource reservation period set M in the resource pool configuration used by the terminal, and is also the value indicated by the "Resource reservation period" field in the first SCI when the terminal performing the resource selection sends data after the terminal performing the resource selection. Thus, the resource R (x, y+j×ptxlg) is a series of resources (in the example of the figure, c=3) marked by diagonal hatching in the sub-graph 1 in fig. 5. For time slot m+q Prxlg, where q=1, 2,3 … Q, prxlg is the number of logical time slots after Prx conversion. Prx is the resource reservation period indicated by "Resource reservation period" in the first SCI transmitted in the PSCCH that the terminal hears. Since the terminal does not listen in the time slot M, prx is all possible values in the resource reservation period set M in the resource pool configuration used by the terminal, i.e. the terminal determines whether the time slot m+q×prxlg calculated by each value in M overlaps with the resource R (x, y+j×ptxlg). For Q, if Prx <Tcal and n-m<＝Prxlg,

(representing the upper rounding), otherwise q=1. Tscal is equal to the value after T2 has been converted to milliseconds. For example, the terminal does not listen in time slot M, and sequentially selects one Prx from the resource reservation period set M in the resource pool configuration to perform resource elimination, for a certain Prx, if Prx<Tcal and n-m<=prxlg, assuming that the Q value is calculated to be 2, thenSlot m+q Prxlg is the next 2 cross-hatched identified slots mapped by slot m in fig. 5, sub-graph 1, otherwise q=1, and slot m+q Prxlg is the slot identified by the cross-hatched in fig. 5, sub-graph 1. Alternatively, the terminal may not perform Step 1-1 described above when the resource pool used by the terminal deactivates reservation between TBs.

Step 1-2: if the terminal listens to a first SCI (v is the frequency domain position of the resource) transmitted in a PSCCH on a resource E (v, m) in a slot m in a listening window, measures a sidelink reference signal received power (Sidelink Reference Signal Received Power, SL-RSRP) of the PSCCH or a SL-RSRP of a PSCCH scheduled by the PSCCH (i.e. a SL-RSRP of a corresponding PSCCH transmitted in the same slot as the PSCCH), if the measured SL-RSRP is greater than a SL-RSRP threshold and a resource pool used by the UE activates a resource reservation between TBs, the terminal assumes that the same content of first sidelink control information is received on all slots m+q Prxlg. Where q=1, 2,3 … Q, for Q, if Prx <Tcal and n-m<＝Prxlg,

(representing a top rounding) otherwise q=1. Tscal is equal to the value after T2 has been converted to milliseconds. Prxlg is the number of logical time slots Prx is the resource reservation period indicated by "Resource reservation period" in the first SCI transmitted in the PSCCH that the terminal has heard. The terminal will determine if the resources indicated by the "Time resource assignment" and "Frequency resource assignment" fields of the first SCI received in slot m and the Q first SCIs received under these assumptions overlap with the resources R (x, y+j Ptxlg), and if so, exclude the corresponding resources R (x, y) from the set a. The j=0, 1,2,3 … C-1, C mentioned above is determined by the random counter value generated by the terminal. Ptxlg is the number of logical slots Ptx is converted into, ptx is the resource reservation period determined by the terminal making the resource selection.

For example, when the resource pool used by the UE activates reservation between TBs, the resource R (x, y+j×ptxlg) is a series of resources marked by diagonal hatching in sub-graph 2 in fig. 5 (in the example shown as c=3). If the terminal listens to the first SCI in the PSCCH on the slot m resource E (v, m) and decodes Prx > Tscal, it calculates Q to be equal to 1, the terminal will assume that the same first SCI is received on slot m + Prxlg. The terminal will determine if the first SCI received in slot m and the

resources

1,2,3, 4, 5, 6 indicated by the "Time resource assignment" and "Frequency resource assignment" fields of the first SCI assumed to be received in slot m+prxlg overlap with the resources R (x, y+j Ptxlg), and if so, exclude the resources R (x, y) from the 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 reservation of resources between TBs, the terminal only determines whether the resources indicated by the "Time resource assignment" and "Frequency resource assignment" fields of the first SCI received in slot m overlap with the resources R (x, y+j×ptxlg), and if so, excludes the resources R (x, y) 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 residual resources in the resource set A after the resource elimination are insufficient M _total * X, then raise the SL-RSRP threshold by 3 decibels (dB), and re-execute Step 1. And the physical layer reports the resource set A with the removed resources as a candidate resource set to a higher layer.

That is, if the terminal does not listen to the data transmitted by the time slot M in the listening window, the terminal will perform resource exclusion according to the time slot M and each value in the resource reservation period set M in the resource pool configuration used by the terminal. Specifically, the terminal determines a series of time slots according to the time slot m, the upper boundary T2 of the resource selection window, and the value of the resource reservation period in the resource pool configuration, and marks the time slots as a time slot set 1. The terminal determines a series of resources according to the resources R (x, y), the counter value generated by the terminal and the resource reservation period used by the terminal, and marks the resources as a resource set 1. If there is an overlap of resource set 1 and slot set 1, then resource R (x, y) is excluded from resource set A. R (x, y) is any resource in the resource set A.

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

Alternatively, if the terminal listens to the first SCI (v is the frequency domain position of the resource) transmitted in the PSCCH on the resources E (v, m) in the slot m in the listening window, measures the SL-RSRP of the PSCCH or the SL-RSRP of the PSCCH scheduled PSCCH (i.e. the SL-RSRP of the corresponding PSCCH transmitted in the same slot as the PSCCH), if the measured SL-RSRP is greater than the SL-RSRP threshold and the pool of resources used by the terminal activates the reservation of resources between TBs, the terminal will determine a series of resources from the "Time resource assignment", "Frequency resource assignment", "resource reservation period" fields in the listening PSCCH, the upper bound T2 of the resource selection window, and the time slot m, to be denoted as resource set 1, and a series of resources from the resources R (X, Y) and the counter value generated by itself, and the resource reservation period used by itself, to be denoted as resource set 2. The terminal excludes the resource R (X, Y) from the resource set a if there is an overlap of the resource set 1 with the resource set 2.

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

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

Step 2: the higher layer randomly selects resources from the reported candidate resource set to send data. I.e. the terminal randomly selects resources from the candidate resource set to transmit data.

Care should be taken that:

1. the RSRP threshold is determined by the priority P1 carried in the PSCCH detected 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 comprises a SL-RSRP threshold table, and the SL-RSRP threshold table comprises SL-RSRP thresholds corresponding to all priority combinations. The configuration of the resource pool may be network configured or preconfigured.

For example, as shown in Table 1, assuming that the priority level selection values of P1 and P2 are each 0-7, the SL-RSRP threshold corresponding to the different priority combinations is γ _ij Representation of itIn (C) _ij I is the value of the priority level P1, j is the value of the priority level P2.

TABLE 1

When the terminal listens to the PSCCH sent by other UE, the priority P1 carried in the first side control information transmitted in the PSCCH and the priority P2 of the data to be sent are obtained, and the terminal determines the SL-RSRP threshold by looking up the table 1.

2. Whether the terminal uses the measured PSCCH-RSRP or the PSCCH-RSRP of the PSCCH schedule is compared to the SL-RSRP threshold depends on the resource pool configuration of the resource pool used by the terminal. The configuration of the resource pool may be network configured or preconfigured.

3. Regarding Prxlg/Ptxlg mentioned above, prx/Ptx is the number of logical slots converted into Prx/Ptx: assuming that one slot is equal to 1 ms and Prx is 5 ms, among the 5 slots, there are 2 slots that may be downlink slots in time division duplex (Time Division Duplex, TDD) mode or slots for transmitting a synchronization signal, which are not included in the resource pool of the sidlink, so that the 5 ms represented by Prx needs to be converted into 3 slots of logical slots, i.e., prxlg.

4. The possible values of X% and X are {20,35,50}. The configuration of the resource pool used by the terminal comprises the corresponding relation between the priority and the possible value, and the terminal determines the value of X according to the priority of the data to be transmitted and the corresponding relation. The resource pool configuration may be configured or preconfigured by the network.

Further, re-evaluation (Re-evaluation) of resources selected but not indicated by transmission of the first SCI after completion of resource selection is also supported in NR-V2X.

As shown in fig. 6, the resource x, y, z, u, v is a time-frequency resource that the terminal has selected in the time slot n, and the resource y is located in the time slot m. Resources z and u for which the terminal is about to send the first SCI first indication at resource y (resource y has been previously indicated by the first SCI in resource x) ). The terminal being at least in time slot m-T ₃ Executing Step 1 above once, i.e. at least in time slot m-T ₃ And determining a resource selection window and a listening window according to the above, and executing Step 1 to remove resources in the resource selection window to obtain a candidate resource set. If resource z or u is not in the candidate set of resources, the terminal performs Step 2 to reselect time-frequency resources of resources z and u that are not in the candidate set of resources, and depending on the terminal implementation, the terminal may also reselect any of the resources that have been selected but not indicated by sending the first SCI, such as any one or more of resources z, u, and v. T as described above ₃ Equal to T _proc,1 . (the dashed arrow in FIG. 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 a resource preemption (Pre-transmission) mechanism. In NR-V2X, the conclusions about the resource preemption mechanism are all described in terms of preempted terminals. After completing the resource selection, the terminal still continuously listens to the first SCI, and if the time-frequency resource which has been selected and indicated by sending the first SCI meets the following three conditions, the terminal triggers the resource reselection for the time-frequency resource, wherein the time-frequency resource is indicated to be preempted by other terminals:

1. The resources indicated in the first SCI that are heard overlap with the resources that have been selected and indicated by the terminal.

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

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

As shown in fig. 7, the resource w, x, y, z, v is a time-frequency resource that the terminal has selected in the time slot n, and the resource x is located in the time slot m. For resources x and y indicated by the first side control information that the terminal is about to send on resource x and that has been indicated by the first side control information that the terminal sent before. The terminal being at least in time slot m-T ₃ Executing Step 1 above once, i.e. at least in time slot m-T ₃ Determining resource selection window and listening window according to the above, and executing Step 1 to the resources in the resource selection windowThe source performs resource exclusion and determines a candidate set of resources. If the resource x or y is not in the candidate resource set, further judging whether the resource x or y meets the three conditions, and if so, the terminal performs Step 2 to reselect the time-frequency resource meeting the 3 conditions in the resources x and y. Further, upon triggering the resource reselection, the terminal may reselect any selected resources, such as any one or more of resources z and v, but not indicated by the transmission of the first side-row control information, depending on the terminal implementation. T as described above ₃ Equal to T _proc,1 。

The SL-RSRP is a linear average of the received power on all Resource Elements (REs) of the PSCCH or PSSCH that carry reference signals (demodulation reference signals (Demodulation Reference Signal, DMRS) or channel state information reference signals (Channel State Information Reference Signal, CSI-RS)). When PSSCH employs multiple antenna port transmissions, SL-RSRP is the sum of the SL-RSRPs measured for each antenna port.

According to the above, the first SCI is carried in the PSCCH and mainly includes the domain related to resource interception, so that it is convenient for other UEs to perform resource exclusion and resource selection after decoding. In the PSSCH, besides data, a second SCI is carried, and the second SCI mainly comprises a domain related to data demodulation, so that other UE can conveniently demodulate the data in the PSSCH.

In order to facilitate better understanding of the embodiments of the present application, the cooperation between terminals related to the present application will be described.

Inter-terminal cooperation is one of the targets of research for release17 (R17) Sidestream (SL) transmission to reduce the negative impact of hidden station, half duplex, etc. problems. For example, in fig. 8, UE a does not receive the first SCI sent by UE B or the measured SL-RSRP is low due to the building obstruction. When UE a triggers a resource selection or reselection, resources reserved by UE B are not excluded, which may lead to resource collision. At this point UE B is referred to as a hidden station for UE a.

This problem can be solved by inter-terminal cooperation, such as between UE a and UE C in fig. 8. The UE C may receive the first SCI sent by the UE B, and when determining the first set of resources, the UE C may exclude resources reserved by the UE B, and indicate the first set of resources to the UE a, where the UE a selects resources in an intersection between the first set of resources and a candidate set of resources obtained after performing resource exclusion, so that resource collision with the UE B may be avoided.

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

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

2. The cooperative terminal (UE C in fig. 8) actively transmits the constructed first resource set to the cooperative terminal (UE a in fig. 8) according to the network configuration or the pre-configuration.

The cooperative terminal refers to a terminal for constructing and transmitting a first resource set, and the cooperative terminal refers to a terminal for selecting and/or excluding resources by using the first resource set.

To facilitate a better understanding of the embodiments of the present application, channel busy rate (Channel Busy Ratio, CBR)/channel occupancy (Channel Occupancy Ratio, CR) measurements relevant to the present application are described.

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

Wherein, the definition of CBR is: CBR measurement window [ n-c, n-1]]In, the ratio of the sub-channels with SL RSSI higher than the configuration threshold to the total number of sub-channels in the resource pool, wherein c is equal to 100 or 100.2 ^μ By time slots, μ is related to subcarrier spacing, illustratively 15khz,30khz,60khz,120khz subcarrier spacing corresponds to μ being 0,1,2,3.

CR is defined as: the number of sub-channels used for transmitting data by the UE in the range of [ n-a, n-1] and the number of sub-channels contained in the obtained sidelink grant in the range of [ n, n+b ] account for the proportion of the total number of sub-channels belonging to the resource pool in the range of [ n-a, n+b ], and CR can be calculated for different priorities respectively. Where a is a positive integer and b is 0 or a positive integer, the values of a and b are determined by the UE, but the following three conditions are required to be satisfied:

1) a+b+1=1000 or 1000·2 ^μ By time slots, μ is related to subcarrier spacing, illustratively 15khz,30khz,60khz,120khz subcarrier spacing 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 of the side-row grant indication;

note that: 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 sub-channel. For example, the possible frequency domain width of one sub-channel is 10,12,15,20,25,50,75,100 PRBs.

Fig. 9 is a simple example of UE measurement CBR/CR, assuming that the resource pool used by the UE includes only two sub-channels, all slots in fig. 9 belong to the resource pool used by the UE, and the UE transmits PSSCH and PSCCH only occupies one sub-channel. The subchannel in the side-line grant used by the UE is v ₁ ,v ₂ ,v ₃ ,v ₄ ,v ₅ When the UE is about to be in the resource v ₅ When transmitting data, the UE measures CR and CBR in time slot N-N to determine whether to discard the data in subchannel v ₅ And transmitted thereon.

For CBR, in time slot N-c, N-1, the UE measures a sidelink received signal strength indication (Sidelink Received Signal Strength Indication, SL-RSSI) on both sub-channels y, u that is greater than the configured threshold, CBR is 2 divided by time slot N-c, the total number of sub-channels belonging to the resource pool used by the UE in N-N-1, or the total number of sub-channels belonging to the resource pool used by the UE except for the time slot used by the UE in the time slot [ N-N-c, N-N-1] is divided by 2.

For CR, let b=0, ue is in [ N-a, N-1]The subchannel already used for transmitting data is v ₁ ,v ₂ ,v ₃ ,v ₄ CR is 4 divided by the time slot [ N-N-a, N-N-1]]The total number of sub-channels or CR in the resource pool belonging to the UE is 4 divided by the time slot [ N-N-a, N-N ]]Which belongs to the total number of sub-channels of the resource pool used by the UE.

The CR is calculated for each of the different priorities as described above, assuming b=0, ue is in [ N-a, N-1 ]The subchannel already used for transmitting data is v ₁ ,v ₂ ,v ₃ ,v ₄ For a certain priority level f, the UE is in subchannel v ₁ ,v ₄ Where data with priority f is sent, CR for priority f is 2 divided by time slot N-a, N-1]The total number of subchannels or CR in the resource pool belonging to the UE is 2 divided by the time slot [ N-N-a, N-N ]]Which belongs to the total number of sub-channels of the resource pool used by the UE.

The above N relates 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 cooperation is one of the important research contents of R17SL, and from the above, it is known that the trigger mechanism of inter-terminal cooperation is mainly divided into two types, but how to trigger inter-terminal cooperation is not yet disclosed.

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

The technical scheme of the present application is described in detail below through specific embodiments.

Fig. 10 is a schematic flow chart diagram of a method 200 of wireless communication according to an embodiment of the present application, as shown in fig. 10, the method 200 may include at least some of the following:

And S210, when the first condition is met, the first terminal sends first information to the second terminal, wherein the first information is used for triggering cooperation between the terminals.

In the embodiment of the application, under the condition that the first condition is met, the first terminal triggers the cooperation between the terminals by sending the first information, the second terminal can determine the first resource set according to the first information and indicate the first resource set to the first terminal, and therefore the first terminal can use the first resource set to conduct resource exclusion and/or resource selection. That is, in the embodiment of the present application, the first terminal may trigger the cooperation between the terminals at a suitable time, and perform resource exclusion and/or resource selection based on the resource set fed back by the second terminal, so as to improve the sidestream transmission performance in the scenario where the problems of hidden station, half duplex and the like exist.

Alternatively, the first condition may be determined based on CBR/CR measurements, on an RSRP threshold used by the first terminal, or on the number of resources in the candidate set of resources, etc.

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

the CBR measured by the first terminal is larger than a first threshold value, or the CBR measured by the first terminal is smaller than the first threshold value;

The CR measured by the first terminal is larger than a second threshold value, or the CR measured by the first terminal is smaller than the second threshold value;

the CR obtained by the first terminal for at least one priority measurement is larger than a third threshold value, or the CR obtained by the first terminal for at least one priority measurement is smaller than the third threshold value;

the sum of CR measured by the first terminal for a plurality of priority levels is larger than a fourth threshold value, or the sum of CR measured by the first terminal for a plurality of priority levels is smaller than the fourth threshold value;

after the first terminal performs candidate resource exclusion based on the non-monitored time slot and/or candidate resource exclusion based on the SCI monitored in the listening window, the number of resources in the candidate resource set is greater than a fifth threshold;

after the first terminal performs candidate resource exclusion based on the non-monitored time slot and/or candidate resource exclusion based on the SCI monitored in the monitoring window, the ratio of the number of resources in the candidate resource set to the initial number of resources in the candidate resource set is greater than a sixth threshold;

the total SL-RSRP threshold 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 times of retransmission of the data to be transmitted by the first terminal is larger than an eighth threshold value, or the number of times of retransmission of the data to be transmitted by the first terminal is smaller than the eighth threshold value;

the first terminal judges that the number of times of conflict is larger than a ninth threshold, wherein the conflict comprises at least one of uplink transmission conflict with lateral transmission conflict, lateral transmission conflict with lateral reception conflict;

the first terminal is in a target time unit;

the first terminal triggers resource selection or reselection;

the first terminal triggers a reevaluation flow for the selected resources;

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

triggering the first terminal to repeatedly execute candidate resource exclusion based on the non-intercepted time slot and/or executing the candidate resource exclusion based on the SCI intercepted in the interception window, wherein the threshold value is larger than or equal to the tenth threshold value.

In the first condition, "candidate resource exclusion based on the non-listening slot and/or candidate resource exclusion based on the SCI detected in the listening window" may specifically be Step1 described above. Specifically, "candidate resource exclusion based on non-listening slots" may be Step1-1 described above. "candidate resource exclusion based on SCI detected in the detection window" may be Step1-2 described above.

In some embodiments, in the first condition, "after the first terminal performs candidate resource exclusion based on the non-listening slot and/or candidate resource exclusion based on the SCI detected in the listening window," may be "after the first terminal performs Step1 above".

In addition, in the first condition, the "initial number of resources in candidate resource set" may be "M" in Step1 described above _total ”。

It should be further noted that, in the first condition, "the threshold value triggering the first terminal to repeatedly perform candidate resource exclusion based on the non-listening slot and/or candidate resource exclusion based on the SCI that is detected in the listening window" may be "X%" in Step 1.

Optionally, in the first condition,

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

the at least one priority is configured or indicated for 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 an overall priority greater than the target priority, or the at least one priority is an overall priority less than the target priority.

Optionally, in the first condition,

The plurality of priorities are pre-configured or protocol agreed; or,

the plurality of priorities being configured or indicated for the network device; or,

the plurality of priorities is determined based on the terminal implementation.

Optionally, in one implementation, the plurality of priorities are all priorities greater than the target priority or the plurality of priorities are all priorities less than the target priority.

Optionally, the target priority is a priority depending on the implementation of the terminal; alternatively, the target priority is pre-configured or protocol-agreed; alternatively, the target priority is configured or indicated for the network device.

It should be noted that, when executing Step 1, the first terminal measures SL-RSRP and compares the SL-RSRP 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 a SL-RSRP threshold table, which includes SL-RSRP thresholds corresponding to all priority combinations, as in table 1 above. The configuration of the resource pool may be network configured or preconfigured. The first terminal determines a corresponding SL-RSRP threshold according to the priority P1 carried in the detected PSCCH and the priority P2 of the data to be sent. (see above for details on Step 1-Step 2)

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

in the process that the first terminal performs candidate resource exclusion based on the non-monitored time slot and/or candidate resource exclusion based on the SCI monitored in the monitoring window, the first terminal determines all SL-RSRP thresholds according to the priority carried by the SCI monitored in the monitoring window and the priority of the data to be sent; or,

the first terminal determines the threshold value of all SL-RSRP according to the priority of the data to be transmitted.

For example, the total SL-RSRP threshold used by the first terminal may include: and the first terminal determines all SL-RSRP thresholds according to the priority carried by the detected SCI and the priority of the data to be transmitted in the Step 1 executing process. Considering that the first terminal may raise the SL-RSRP threshold multiple times and repeatedly perform Step 1 described above, all of the SL-RSRP thresholds used by the first terminal may include: and the first terminal determines all SL-RSRP thresholds according to the priority carried by the detected SCI and the priority of the data to be transmitted in the process of executing Step 1 for the first time or the last time.

As another example, the total SL-RSRP threshold used by the first terminal may include: the first terminal determines all SL-RSRP thresholds according to the priority of the data to be transmitted, for example, one row in table 1. Considering that the first terminal may raise the SL-RSRP threshold multiple times, the total SL-RSRP threshold used by the first terminal may include: after the SL-RSRP threshold is not lifted or the SL-RSRP threshold is lifted for the last time, the first terminal determines all SL-RSRP thresholds according to the priority of the data to be sent. Or all SL-RSRP thresholds used by the first terminal may include: the first terminal determines a SL-RSRP threshold according to the priority of the data to be transmitted and all possible priorities.

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

in the process that the first terminal performs candidate resource exclusion based on the non-monitored time slot and/or candidate resource exclusion based on the SCI monitored in the monitoring window, the first terminal determines an SL-RSRP threshold according to the priority which is carried by the monitored sidestream control information and is greater than the priority threshold and the priority of the data to be transmitted; or,

in the process that the first terminal performs candidate resource exclusion based on the non-monitored time slot and/or candidate resource exclusion based on the SCI monitored in the monitoring window, the first terminal determines an SL-RSRP threshold according to the priority which is carried by the monitored sidestream control information and is smaller than the priority threshold and the priority of the data to be transmitted; or,

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

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

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

For example, the partial SL-RSRP threshold used by the first terminal may include: the first terminal determines the SL-RSRP threshold according to the priority carried by the detected SCI and greater or less than the priority threshold and the priority of the data to be sent in the Step 1 executing process. Considering that the first terminal may raise the SL-RSRP threshold multiple times and repeatedly perform Step 1 described above, the portion of the SL-RSRP threshold used by the first terminal may include: and the first terminal determines all SL-RSRP thresholds according to the priority which is carried by the detected SCI and is greater than or less than the priority threshold and the priority of the data to be transmitted in the process of executing Step 1 for the first time or the last time.

As another example, the partial SL-RSRP threshold used by the first terminal may include: the first terminal determines a SL-RSRP threshold according to the priority of the data to be transmitted and the priority which is larger than or smaller 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: after the SL-RSRP threshold is not lifted or the SL-RSRP threshold is lifted for the last time, the first terminal determines the SL-RSRP threshold according to the priority of the data to be sent and the priority which is larger or smaller than the priority threshold.

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

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

the difference between the time unit for triggering the resource selection or the resource reselection by the first terminal and N1 time units, where N1 is a positive integer, for example, the time unit for triggering the resource selection or the resource reselection by the first terminal is the time slot N in fig. 5;

the first terminal triggers the time unit for reevaluating the selected resource, e.g. the time unit for reevaluating the selected resource is the time slot m-T in the above-mentioned FIG. 6 ₃ ；

The first terminal triggers the difference between the time unit for reevaluating the selected resource and N2 time units, N2 being a positive integer, e.g. the time unit for reevaluating the selected resource is the time slot m-T in FIG. 6 ₃ ；

The time unit of the first terminal triggering the determination of whether the selected resource is preempted by other terminals, for example, the time unit of the first terminal triggering the determination of whether the selected resource is preempted by other terminals is the time slot m-T in fig. 7 ₃ ；

The difference between the time unit for triggering the judgment of whether the selected resource is preempted by other terminals and N3 time units, N3 being a positive integer, for example, the time unit for triggering the judgment of whether the selected resource is preempted by other terminals is the time slot m-T in the above-mentioned figure 7 ₃ 。

Optionally, N1 is pre-configured or protocol agreed; 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 protocol agreed; 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 protocol agreed; 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 first to tenth thresholds are preconfigured or protocol agreed; or, part or all of the first to tenth thresholds are configured or indicated by the network device; alternatively, some or all of the first to tenth thresholds are determined based on the terminal implementation.

The factors in the first condition may be arbitrarily combined without conflict, 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 set of SL-RSRP thresholds.

Optionally, the first SL-RSRP threshold is a maximum value of 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 of a first set of SL-RSRP thresholds.

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

the first terminal determines all SL-RSRP thresholds according to the priority of the data to be transmitted;

the first terminal determines a SL-RSRP threshold according to the priority of the data to be sent and the priority smaller than the priority threshold;

each SL-RSRP threshold in the second set of SL-RSRP thresholds is increased or decreased by an offset of L decibels (dB).

For example, the first SL-RSRP threshold set includes: the first terminal determines the total SL-RSRP threshold according to the priority of the data to be transmitted, e.g. one row in table 1 above. Considering that the first terminal may raise the SL-RSRP threshold multiple times, the first set of SL-RSRP thresholds includes: after the SL-RSRP threshold is not lifted or the SL-RSRP threshold is lifted for the last time, the first terminal determines all SL-RSRP thresholds according to the priority of the data to be sent. Alternatively stated, the first SL-RSRP threshold set comprises: the first terminal determines a SL-RSRP threshold according to the priority of the data to be transmitted and all possible priorities.

For another example, the first set of SL-RSRP thresholds includes: the first terminal determines a SL-RSRP threshold according to the priority of the data to be transmitted and the priority which is larger than or smaller than the priority threshold. Considering that the first terminal may raise the SL-RSRP threshold multiple times, the first set of SL-RSRP thresholds includes: after the SL-RSRP threshold is not lifted or the SL-RSRP threshold is lifted for the last time, the first terminal determines the SL-RSRP threshold according to the priority of the data to be sent and the priority which is larger or smaller than the priority threshold.

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

the priority threshold value 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:

Optionally, L is a pre-configuration or protocol convention; or,

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

l is determined based on the terminal implementation.

In some embodiments, after receiving the first information, the second terminal may construct a first set of resources from the first information. For example, the second terminal executes Step 1 to determine a candidate resource set according to the first RSRP threshold group or the first RSRP threshold in the first information, where the candidate resource set is the first resource set. Further, the second terminal sends the first set of resources to the first terminal. The first terminal uses the first resource set to conduct resource exclusion and/or resource selection. For example, the first terminal excludes resources belonging to/not belonging to the first resource set from the candidate resource set for which Step 1 has been performed. Or the first terminal selects resource transmission data from the intersection of the candidate resource set after executing Step 1 and the first resource set. Or if the selected resource is not in the first set of resources, the first terminal triggers a resource reselection for the selected resource.

Optionally, in some embodiments, after receiving the first information, the second terminal increases or decreases the first RSRP threshold by Φdb for a first set of RSRP thresholds or the first RSRP threshold, and then determines the first set of resources using the increased or decreased set of RSRP thresholds or the RSRP threshold. For example, step 1 described above is performed to determine a candidate set of resources using the set or threshold of thresholds, by first increasing or decreasing Φdb.

Therefore, in the embodiment of the application, the condition for triggering the cooperation between the terminals is provided, so that the cooperation between the terminals can be triggered at a proper time, and the sidestream transmission performance under the scene of the problems of hidden stations, half duplex and the like is improved.

The method embodiment of the present application is described in detail above with reference to fig. 10, and the apparatus embodiment of the present application is described in detail below with reference to fig. 11 to 14, it being understood that the apparatus embodiment corresponds to the method embodiment, and similar descriptions may refer to the method embodiment.

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:

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

Optionally, the first condition includes at least one of:

the channel busy rate CBR measured by the first terminal is larger than a first threshold value, or the CBR measured by the first terminal is smaller than the first threshold value;

the channel occupancy CR measured by the first terminal is larger than a second threshold value, or the CR measured by the first terminal is smaller than the second threshold value;

after the first terminal performs candidate resource exclusion based on the non-intercepted time slot and/or performs candidate resource exclusion based on the sidestream control information SCI intercepted in the interception window, the number of resources in the candidate resource set is greater than a fifth threshold;

the threshold value of the receiving power SL-RSRP of all the sidestream reference signals used by the first terminal is larger than a seventh threshold value, or the threshold value of the partial SL-RSRP used by the first terminal is larger than the seventh threshold value;

the first terminal is in a target time unit;

the first terminal triggers resource selection or reselection;

the first terminal triggers a reevaluation flow for the selected resources;

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

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

Optionally, the plurality of priorities are pre-configured or protocol agreed; or,

the plurality of priorities is determined based on the terminal implementation.

Optionally, the plurality of priorities are all priorities greater than the target priority, or the plurality of priorities are all priorities less than the target priority.

Optionally, the target priority is a priority depending on the implementation of the terminal; or,

the target priority is pre-configured or agreed by a 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 first terminal triggers a time unit for resource selection or resource reselection;

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

the first terminal triggers a time unit for reevaluating the selected resources;

the first terminal triggers the difference value between the time unit for reevaluating the selected resource and N2 time units, wherein N2 is a positive integer;

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

the first terminal triggers a difference between a time unit for determining whether the selected resource is preempted by the other terminal and N3 time units, N3 being a positive integer.

Optionally, N1 is pre-configured or protocol agreed; 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 protocol agreed; 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 protocol agreed; 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.

the first SL-RSRP threshold is an average of a first set of SL-RSRP thresholds.

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

each SL-RSRP threshold in the second SL-RSRP threshold set is increased or decreased by an offset of L decibels.

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

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

Optionally, L is a pre-configuration or protocol convention; or,

l is configured or indicated by the network equipment; or,

l is determined based on the terminal implementation.

Alternatively, in some embodiments, the communication unit may be a communication interface or transceiver, or an input/output interface of a communication chip or a system on a 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 embodiment of the method of the present application, and the foregoing and other operations and/or functions of each unit in the terminal device 300 are respectively for implementing the corresponding flow of the first terminal in the method 200 shown in fig. 10, which is not repeated herein for brevity.

Fig. 12 is a schematic structural diagram of a communication device 400 provided in an embodiment of the present application. The communication device 400 shown in fig. 12 comprises a processor 410, from which the processor 410 may call and run a computer program to implement the method in the embodiments of the present application.

Optionally, as shown in fig. 12, the communication device 400 may also include a memory 420. Wherein the processor 410 may call and run a computer program from the memory 420 to implement the methods in embodiments of the present application.

Wherein the memory 420 may be a separate device from the processor 410 or may be integrated into 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, and in particular, may send information or data to other devices, or receive information or data sent by other devices.

Among other things, transceiver 430 may include a transmitter and a receiver. Transceiver 430 may further include antennas, the number of which may be one or more.

Optionally, the communication device 400 may be specifically a terminal device in the embodiment of the present application, and the communication device 400 may implement a corresponding flow implemented by the first terminal in each method in the embodiment of the present application, which is not described herein for brevity.

Fig. 13 is a schematic structural view of an apparatus of an embodiment of the present application. The apparatus 500 shown in fig. 13 includes a processor 510, and the processor 510 may call and run a computer program from a memory to implement the methods in the embodiments of the present application.

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

Wherein the memory 520 may be a separate device from the processor 510 or may be integrated into the processor 510.

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

Optionally, the apparatus 500 may further comprise an output interface 540. Wherein the processor 510 may control the output interface 540 to communicate with other devices or chips, and in particular may output information or data to other devices or chips.

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

Alternatively, the device mentioned in the embodiments of the present application may also be a chip. For example, a system-on-chip or a system-on-chip, etc.

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 configured to implement the corresponding functions implemented by the first terminal in the above method, which are not described herein for brevity.

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

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

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

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

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

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

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

The embodiment of the application also provides a computer program.

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

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

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

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

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

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

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

The foregoing is merely specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the present application, and the changes and substitutions are intended to be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

A method of wireless communication, comprising:

and under the condition that the first condition is met, the first terminal sends first information to the second terminal, wherein the first information is used for triggering cooperation between the terminals.
The method of claim 1, wherein the first condition comprises at least one of:

the channel busy rate CBR measured by the first terminal is larger than a first threshold value, or the CBR measured by the first terminal is smaller than the first threshold value;

the channel occupancy CR measured by the first terminal is larger than a second threshold, or the CR measured by the first terminal is smaller than the second threshold;

the CR obtained by the first terminal for at least one priority measurement is larger than a third threshold value, or the CR obtained by the first terminal for at least one priority measurement is smaller than the third threshold value;

the sum of CR obtained by the first terminal aiming at a plurality of priority measurements is larger than a fourth threshold value, or the sum of CR obtained by the first terminal aiming at a plurality of priority measurements is smaller than the fourth threshold value;

after the first terminal performs candidate resource exclusion based on the non-intercepted time slot and/or candidate resource exclusion based on the sidestream control information SCI intercepted in the interception window, the number of resources in the candidate resource set is greater than a fifth threshold;

After the first terminal performs candidate resource exclusion based on the non-monitored time slot and/or candidate resource exclusion based on the SCI monitored in the listening window, the ratio of the number of resources in the candidate resource set to the initial number of resources in the candidate resource set is greater than a sixth threshold;

the threshold value of the receiving power SL-RSRP of all the sidestream reference signals used by the first terminal is larger than a seventh threshold value, or the threshold value of the partial SL-RSRP used by the first terminal is larger than the seventh threshold value;

the number of times of retransmission of the data to be transmitted by the first terminal is larger than an eighth threshold value, or the number of times of retransmission of the data to be transmitted by the first terminal is smaller than the eighth threshold value;

the first terminal judges that the number of times of conflict is larger than a ninth threshold, wherein the conflict comprises at least one of uplink transmission conflict with side transmission conflict, side transmission conflict with side reception conflict;

the first terminal is in a target time unit;

the first terminal triggers resource selection or reselection;

the first terminal triggers a reevaluation flow for the selected resources;

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

Triggering the first terminal to repeatedly execute candidate resource exclusion based on the non-intercepted time slot and/or executing the candidate resource exclusion based on the SCI intercepted in the interception window, wherein the threshold value is larger than or equal to a tenth threshold value.
The method of claim 2, wherein,

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

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

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

the priorities are pre-configured or agreed by a protocol; or,

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

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

the plurality of priorities are all priorities greater than the target priority, or the plurality of priorities are all priorities less than the target priority.
The method of claim 5, wherein,

the target priority is a priority depending on the implementation of the terminal; or,

the target priority is pre-configured or agreed by a protocol; or,

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

in the process that the first terminal performs candidate resource exclusion based on the non-monitored time slot and/or candidate resource exclusion based on the SCI monitored in the monitoring window, the first terminal determines all SL-RSRP thresholds according to the priority carried by the SCI monitored in the monitoring window and the priority of the data to be sent; or,

and the first terminal determines all SL-RSRP thresholds according to the priority of the data to be transmitted.
The method of claim 2, wherein the partial SL-RSRP threshold used by the first terminal comprises:

in the process that the first terminal performs candidate resource exclusion based on the non-monitored time slot and/or performs candidate resource exclusion based on the SCI monitored in the monitoring window, the first terminal determines an SL-RSRP threshold according to the priority which is carried by the monitored sidestream control information and is greater than the priority threshold and the priority of the data to be sent; or,

in the process that the first terminal performs candidate resource exclusion based on the non-monitored time slot and/or candidate resource exclusion based on the SCI monitored in the monitoring window, the first terminal determines an SL-RSRP threshold according to the priority which is carried by the monitored sidestream control information and is smaller than the priority threshold and the priority of the data to be sent; or,

The first terminal determines a SL-RSRP threshold according to the priority of the data to be sent and the priority greater than the priority threshold;

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

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

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

the first terminal triggers a time unit for reevaluating the selected resources;

the first terminal triggers the difference value between the time unit for reevaluating the selected resource and N2 time units, wherein N2 is a positive integer;

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

the first terminal triggers the difference value between the time unit for judging whether the selected resource is preempted by other terminals and N3 time units, wherein N3 is a positive integer.
The method of claim 9, wherein,

n1 is pre-configured or agreed; 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; 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; or,

n3 is configured or indicated by the network device; or,

n3 is determined based on the terminal implementation.
The method according to any of claims 1 to 12, wherein the first information comprises at least a first set of SL-RSRP thresholds or a first SL-RSRP threshold.
The method of claim 13, wherein,

the first SL-RSRP threshold is the maximum value in a 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 a first SL-RSRP threshold group.
The method of claim 13 or 14, wherein the first set of SL-RSRP threshold values comprises one of:

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

The first terminal determines a SL-RSRP threshold according to the priority of the data to be sent and the priority greater than the priority threshold;

the first terminal determines a SL-RSRP threshold according to the priority of the data to be sent and the priority smaller than the priority threshold;

each SL-RSRP threshold in the second SL-RSRP threshold set is increased or decreased by an offset of L decibels.
The method of claim 8 or 15, wherein,

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

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

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

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

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

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

L is a pre-configuration or protocol convention; or,

l is configured or indicated by the network equipment; or,

l is determined based on the terminal implementation.
A terminal device, wherein the terminal device is a first terminal, the terminal device comprising:

and the communication unit is used for sending first information to the second terminal under the condition that the first condition is met, wherein the first information is used for triggering cooperation between the terminals.
The terminal device of claim 19, wherein the first condition comprises at least one of:

the channel busy rate CBR measured by the first terminal is larger than a first threshold value, or the CBR measured by the first terminal is smaller than the first threshold value;

the channel occupancy CR measured by the first terminal is larger than a second threshold, or the CR measured by the first terminal is smaller than the second threshold;

the CR obtained by the first terminal for at least one priority measurement is larger than a third threshold value, or the CR obtained by the first terminal for at least one priority measurement is smaller than the third threshold value;

the sum of CR obtained by the first terminal aiming at a plurality of priority measurements is larger than a fourth threshold value, or the sum of CR obtained by the first terminal aiming at a plurality of priority measurements is smaller than the fourth threshold value;

After the first terminal performs candidate resource exclusion based on the non-intercepted time slot and/or candidate resource exclusion based on the sidestream control information SCI intercepted in the interception window, the number of resources in the candidate resource set is greater than a fifth threshold;

after the first terminal performs candidate resource exclusion based on the non-monitored time slot and/or candidate resource exclusion based on the SCI monitored in the listening window, the ratio of the number of resources in the candidate resource set to the initial number of resources in the candidate resource set is greater than a sixth threshold;

the threshold value of the receiving power SL-RSRP of all the sidestream reference signals used by the first terminal is larger than a seventh threshold value, or the threshold value of the partial SL-RSRP used by the first terminal is larger than the seventh threshold value;

the number of times of retransmission of the data to be transmitted by the first terminal is larger than an eighth threshold value, or the number of times of retransmission of the data to be transmitted by the first terminal is smaller than the eighth threshold value;

the first terminal judges that the number of times of conflict is larger than a ninth threshold, wherein the conflict comprises at least one of uplink transmission conflict with side transmission conflict, side transmission conflict with side reception conflict;

the first terminal is in a target time unit;

The first terminal triggers resource selection or reselection;

the first terminal triggers a reevaluation flow for the selected resources;

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

triggering the first terminal to repeatedly execute candidate resource exclusion based on the non-intercepted time slot and/or executing the candidate resource exclusion based on the SCI intercepted in the interception window, wherein the threshold value is larger than or equal to a tenth threshold value.
The terminal device of claim 20, wherein,

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

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

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

the priorities are pre-configured or agreed by a protocol; or,

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

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

the plurality of priorities are all priorities greater than the target priority, or the plurality of priorities are all priorities less than the target priority.
The terminal device of claim 23, wherein,

the target priority is a priority depending on the implementation of the terminal; or,

the target priority is pre-configured or agreed by a protocol; or,

the target priority is configured or indicated by the network device.
The terminal device of claim 20, wherein the total SL-RSRP threshold used by the first terminal comprises:

in the process that the first terminal performs candidate resource exclusion based on the non-monitored time slot and/or candidate resource exclusion based on the SCI monitored in the monitoring window, the first terminal determines all SL-RSRP thresholds according to the priority carried by the SCI monitored in the monitoring window and the priority of the data to be sent; or,

and the first terminal determines all SL-RSRP thresholds according to the priority of the data to be transmitted.
The terminal device of claim 20, wherein the partial SL-RSRP threshold used by the first terminal comprises:

in the process that the first terminal performs candidate resource exclusion based on the non-monitored time slot and/or performs candidate resource exclusion based on the SCI monitored in the monitoring window, the first terminal determines an SL-RSRP threshold according to the priority which is carried by the monitored sidestream control information and is greater than the priority threshold and the priority of the data to be sent; or,

In the process that the first terminal performs candidate resource exclusion based on the non-monitored time slot and/or candidate resource exclusion based on the SCI monitored in the monitoring window, the first terminal determines an SL-RSRP threshold according to the priority which is carried by the monitored sidestream control information and is smaller than the priority threshold and the priority of the data to be sent; or,

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

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

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

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

the first terminal triggers a time unit for reevaluating the selected resources;

the first terminal triggers the difference value between the time unit for reevaluating the selected resource and N2 time units, wherein N2 is a positive integer;

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

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

n1 is pre-configured or agreed; 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; 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; or,

n3 is configured or indicated by the network device; or,

n3 is determined based on the terminal implementation.
A terminal device according to any of claims 19 to 30, wherein the first information comprises at least a first set of SL-RSRP thresholds or a first SL-RSRP threshold.
The terminal device of claim 31, wherein,

the first SL-RSRP threshold is the maximum value in a 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 a first SL-RSRP threshold group.
The terminal device according to claim 31 or 32, wherein the first set of SL-RSRP threshold values comprises one of:

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

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

the first terminal determines a SL-RSRP threshold according to the priority of the data to be sent and the priority smaller than the priority threshold;

each SL-RSRP threshold in the second SL-RSRP threshold set is increased or decreased by an offset of L decibels.
The terminal device according to claim 26 or 33, wherein,

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

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

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

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

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

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

l is a pre-configuration or protocol convention; or,

l is configured or indicated by the network equipment; or,

l is determined based on the terminal implementation.
A terminal device, comprising: a processor and a memory for storing a computer program, the processor being for invoking and running the computer program stored in the memory, performing the method of any of claims 1 to 18.
A chip, comprising: a processor for calling and running a computer program from a memory, causing a device on which the chip is mounted to perform the method of any one of claims 1 to 18.
A computer readable storage medium storing a computer program for causing a computer to perform the method of any one of claims 1 to 18.
A computer program product comprising computer program instructions for 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.