WO2024032565A1

WO2024032565A1 - Resource exclusion method and related product

Info

Publication number: WO2024032565A1
Application number: PCT/CN2023/111544
Authority: WO
Inventors: 李君瑶; 杨帆; 黄海宁; 张天虹
Original assignee: 华为技术有限公司
Priority date: 2022-08-12
Filing date: 2023-08-07
Publication date: 2024-02-15
Also published as: CN117676721A

Abstract

The present application provides a resource exclusion method and a related product. The resource exclusion method comprises: a first terminal determines a reserved resource of a second terminal; and the first terminal excludes a first candidate resource from a candidate resource set, wherein the first candidate resource comprises at least one of a first resource or a second resource; the first resource is a resource used for transmission by the first terminal within a first channel occupancy time (COT) of the first terminal, the second resource comprises a resource other than the first resource within the first COT or a resource used for sharing within the first COT, the first candidate resource and the reserved resource satisfy a resource exclusion condition, the resource exclusion condition comprises a first condition or a second condition, the first condition is that the first resource conflicts with the reserved resource, and the second condition is that at least one resource in the first resource or the second resource conflicts with the reserved resource. The use of the present application can achieve resource exclusion in an unlicensed spectrum sidelink transmission scenario.

Description

Resource exclusion methods and related products

This application claims priority to the Chinese patent application filed with the China Patent Office on August 12, 2022, with the application number 202210968753.6 and the application name "Resource Exclusion Method and Related Products", the entire content of which is incorporated into this application by reference.

Technical field

The present application relates to the field of communication technology, and in particular, to a resource exclusion method and related products.

Background technique

The resource scheduling mode for the terminal to perform side-link transmission is divided into mode 1 and mode 2. Mode 1 means that the base station can be responsible for the resource scheduling of the terminal for side-link transmission, while mode 2 requires the terminal to perform independent resource scheduling according to certain rules. Select to send. Since side-link transmission is a distributed system, when a terminal selects resources, in order to avoid conflicts between transmission resources selected by multiple terminals, a resource exclusion mechanism is introduced. To put it simply, the resource-selecting terminal will initialize the candidate resource set within the selection window, and listen to the sidelink control information (SCI) sent by other terminals in the sensing window. The SCI will indicate the resources reserved by other terminals. The resources that need to be occupied. The resource-selecting terminal selects the sidelink control channel or the corresponding sidelink data channel where the SCI of the candidate resource set that conflicts with the reserved resource and indicates the reserved resource is located based on the reserved resources indicated by other terminals. Candidate resources whose RSRP is greater than the threshold are eliminated, thereby determining the final set of candidate resources and reporting them to the medium access control (MAC) layer, which selects the resources ultimately used for transmission.

With the creation of channel occupancy time (COT) sharing, devices can share resources that do not need to be occupied in their own COT to other devices. How to implement resource exclusion mechanism in COT sharing scenario is an urgent problem to be solved.

Contents of the invention

This application provides a resource exclusion method and related products, which can realize resource exclusion in COT sharing scenarios and adapt to resource exclusion requirements in different transmission scenarios in unlicensed spectrum.

In a first aspect, embodiments of the present application provide a resource exclusion method, where the method can be executed by a first terminal or by a component of the first terminal (such as a processor, a chip, or a chip system, etc.). The resource exclusion method may include: the first terminal determines the reserved resources of the second terminal; the first terminal excludes the first candidate resource from the candidate resource set, where the first candidate resource includes at least the first resource or the second resource. One; the first resource is a resource used by the first terminal for transmission within the first channel occupancy time COT of the first terminal, and the second resource includes resources in the first COT other than the first resource or resources used within the first COT. Regarding shared resources, it can be understood that the resources used for sharing in the first COT may include part or all of the resources in the first COT except the first resource, which is not limited in this application.

Wherein, the first candidate resource and the reserved resource satisfy a resource exclusion condition, the resource exclusion condition includes a first condition or a second condition, the first condition includes a conflict between the first resource and the reserved resource; the second condition The condition includes that at least one of the first resource or the second resource conflicts with the reserved resource.

By implementing the method described in the first aspect, the candidate resources may include at least one of a first resource in the first COT of the first terminal for transmission by the first terminal or a second resource in the first COT. When excluding, you can consider whether the first resource conflicts with reserved resources based on different situations, or you can also take into account the second resource in the first COT, that is, at least one of the first resource or the second resource conflicts with the reserved resource. Reserved resource conflicts are identified as resource conflicts, thereby realizing resource exclusion under COT sharing scenarios and adapting to resource exclusion requirements in different transmission scenarios in unlicensed spectrum.

In a possible implementation, the resource exclusion condition includes the first condition or the second condition is determined based on at least one of the following:

1. The comparison result between the priority of the first terminal and the second priority threshold;

Among them, the priority of the first terminal can be business priority, physical layer priority, resource priority (resource granularity is not limited; resources may refer to time domain and/or frequency domain resources), the priority of the first terminal, in CAPC of at least one.

In a possible implementation, if the priority of the first terminal is greater than or equal to the second priority threshold, the resource exclusion condition may include the second condition; if the priority of the first terminal is less than the second priority threshold, the resource exclusion condition The exclusion conditions may include the first condition. In this way, in a scenario where the priority of the first terminal is relatively high, it can be ensured that the entire COT of the first terminal does not overlap with the reserved resources, thereby not interrupting the COT of the first terminal.

In another possible implementation, if the first terminal priority is greater than or equal to the second priority threshold, the resource exclusion condition may include the first condition. Since other terminals will avoid the first terminal, it is ensured that the COT of the first terminal is not interrupted. If the first terminal takes precedence The priority level is less than the second priority threshold, and the resource exclusion condition may include the second condition.

2. The comparison result between the resource priority in the first COT and the priority of the reserved resources of the second terminal;

The resources in the first COT may refer to all resources or any one or more resources in the first COT. For example, it may be a first resource used for transmission by the first terminal in the first COT, or a resource used for sharing in the first COT, or other resources in the first COT other than resources used for transmission by the first terminal. resource. For ease of description, this application refers to resources used for sharing in the first COT, or other resources in the first COT other than resources used for transmission by the first terminal, as second resources, that is, they may be second resources. Priority comparison result with the priority of reserved resources. Optionally, the resource priority may also refer to the priority of the first COT. The reserved resources may refer to all resources or any one or more resources in the resources reserved by the second terminal. For example, it may be resources used for transmission by the second terminal, or resources used for sharing, or other resources besides resources used for transmission by the second terminal. Optionally, the priority of the reserved resource may also refer to the priority of the COT of the second terminal. The resource priority in the first COT can be understood as the priority of the first resource used for transmission by the first terminal in the first COT, or the priority of the second resource used for sharing in the first COT initialized by the first terminal, Or the resource priority of the first COT of the first terminal, or the highest or lowest resource priority within the first COT. The priority of the reserved resources of the second terminal can be understood as the priority of resources used for transmission by the second terminal in the second COT of the second terminal, or the priority of resources used for sharing in the second COT initialized by the second terminal. , or the resource priority of the second COT of the second terminal, or the highest or lowest resource priority within the second COT of the second terminal. The resource priority may refer to at least one of service priority, physical layer priority, UE priority, and CAPC, or at least one of service priority, physical layer priority, UE priority, and CAPC. kind of sure.

In an implementation manner, if the resource priority in the first COT is greater than or equal to the priority of the resource reserved by the second terminal, the resource exclusion condition includes a second condition. If the resource priority in the first COT is smaller than the priority of the resources reserved by the second terminal, the resource exclusion conditions include the first condition to ensure that the entire COT of the first terminal does not overlap with the reserved resources, thereby not interrupting the first terminal's COT.

In another implementation manner, if the resource priority in the COT is greater than or equal to the priority of the resource reserved by the second terminal, the resource exclusion condition may also include the first condition. Since other terminals will avoid the first terminal, it is also ensured that the COT of the first terminal will not be interrupted. If the resource priority in the first COT is smaller than the priority of the resource reserved by the second terminal, the resource exclusion condition includes a second condition.

3. Requirement information on whether the second resource is shared;

If the second resource will not be shared with other terminals, the resource exclusion condition includes the first condition. If the second terminal is shared with other terminals, the resource exclusion condition includes a second condition, which needs to prevent the first COT from being interrupted. The demand information may be determined based on at least one of request information from other terminals, instruction information from the base station, reservation information from other terminals, implementation of the first terminal, and (pre)configuration.

4. (Pre-)configured information.

Predefinition, or semi-static configuration carried in RRC, instructions carried in SCI or DCI or other dynamic signaling, etc., can all be called (pre)configuration. It can be understood that the description of the (pre)configuration here is applicable to all embodiments of the present application, and is not limited to this embodiment.

5. Whether the first terminal is the terminal of the initial first COT, or whether other terminals will share the COT with the first terminal.

If the first COT is initialized by the first terminal through LBT, it means that the first terminal has the authority to share the second resource, so the resource exclusion condition needs to include the second condition. If the first COT is not initialized by the first terminal through LBT, it means that the first terminal does not have the permission to share the second resource, so the resource exclusion condition may include the first condition. Whether the first terminal is the terminal of the initial first COT, or whether other terminals will share the COT with the first terminal, can be based on the implementation of the first terminal, the instruction information of the base station, the COT sharing information of other terminals, and the reservation of other terminals. information, etc. to determine.

Implementing this method, when excluding resources, select different conditions for resource exclusion in different situations, and determine only the first resource reserved for its own transmission to avoid the reserved resources of other terminals, or the first COT of the first terminal All avoid the reserved resources of other terminal devices, adapt to the needs of different situations, and selectively ensure the continuity of the COT of the first terminal, which can effectively improve system efficiency and avoid excessive exclusion and waste of resources when there is no sharing requirement. .

In a possible implementation, the candidate resource set includes multiple candidate resources, and one candidate resource occupies the length of a COT in the time domain, or one candidate resource occupies a basic time unit in the time domain; so The plurality of candidate resources include the first candidate resource.

Implementing this method, if the granularity of the candidate resources can be a basic time unit, it can be flexibly determined that the candidate resources include at least one of the first resource or the second resource; if the granularity of the candidate resources is COT granularity, the efficiency of resource exclusion can be improved. efficiency.

In a possible implementation, if a candidate resource occupies the length of one COT in the time domain, there is no overlap between the candidate resources among the plurality of candidate resources; or, there is a partial overlap among the plurality of candidate resources. Overlapping candidate resources.

By implementing this method, when the granularity of candidate resources is COT granularity, the time domain and/or frequency domain location of each candidate resource can be flexibly determined to fully utilize the resources.

In a possible implementation, the position difference between two candidate resources in the time domain among the plurality of candidate resources is N basic time units, The N is an integer greater than or equal to 1.

This method is implemented to define the position difference between two candidate resources in the time domain, thereby facilitating the determination of the position of each candidate resource in the time domain.

In a possible implementation, the reserved resources include at least one of third resources or fourth resources;

The third resource is a resource used for transmission by the second terminal in the second COT of the second terminal, and the fourth resource includes resources in the second COT other than the third resource or The second COT is used for shared resources.

Implementing this method, the reserved resources may include at least one of the third resource or the fourth resource, thereby improving the flexibility of reserved resource determination and being suitable for different needs and scenarios.

In a possible implementation, whether the reserved resources include the fourth resource is determined based on at least one of the following:

A. The comparison result between the service priority of the first terminal and the first priority threshold;

B. The comparison result between the service priority of the first terminal and the service priority of the second terminal;

C. The comparison result between the resource priority in the first COT of the first terminal and the resource priority in the second COT of the second terminal;

D. The comparison result between the service priority of the first terminal and the service priority carried by the fourth resource;

E. Transmitting and receiving relationship information between the first terminal and the second terminal;

F. The remaining packet delay budget PDB of the first terminal;

G. Comparison results between the Source ID and/or destination ID of the first terminal and the Source ID and/or destination ID of the second terminal;

H. Channel congestion level information;

I. (Pre-)configured information;

J. Instruction information of the second terminal, the instruction information is used to instruct release of the fourth resource;

K. COT sharing indication information associated with the second COT, where the COT sharing indication information is used to instruct sharing of resources in the second COT with the first terminal.

L. Whether the second terminal is the terminal device that initializes the second COT, or whether other terminal devices share the COT with the second terminal.

Implementing this method, the first terminal that performs resource selection determines whether the reserved resources include the fourth resource according to at least one of the conditions, so that the first terminal can selectively avoid it when further performing resource exclusion and resource selection. The shared fourth resource can ensure the continuity of the second COT of the second terminal or ensure the normal operation of the high-priority service preemption mechanism under different circumstances, which can effectively improve system efficiency and achieve a trade-off between the two.

In the second aspect, embodiments of the present application provide a resource exclusion method, where the method can be executed by the first terminal or by components of the first terminal (such as a processor, a chip, or a chip system, etc.). This resource exclusion method can include:

The first terminal determines the reserved resources of the second terminal. The reserved resources include at least one of third resources or fourth resources. The third resources are used for the second COT of the second terminal. Resources for transmission by the second terminal, the fourth resources include resources in the second COT other than the third resources or resources for sharing in the second COT;

The first terminal excludes a first candidate resource from a candidate resource set, and a resource exclusion condition is satisfied between the first candidate resource and the reserved resource, and the resource exclusion condition includes the first candidate resource and the Reserved resource conflict.

By implementing the method described in the second aspect, the reserved resources may include at least one of the third resource in the second COT of the second terminal for transmission by the second terminal or the fourth resource in the second COT, thereby improving The flexibility of reserved resource determination enables resource reservation in different COT sharing scenarios, which is beneficial to improving system efficiency.

F. The remaining packet delay budget PDB of the first terminal;

H. Channel congestion level information;

I. (Pre-)configured information;

In the third aspect, embodiments of the present application provide a resource exclusion method, where the method is executed by the second terminal, or may also be executed by components of the first terminal (such as a processor, a chip, or a chip system, etc.). The resource exclusion method may include: the second terminal sends resource indication information, the resource indication information is used to determine a third resource and a fourth resource, and the third resource is a resource used in the second COT of the second terminal. The resources transmitted by the second terminal, the fourth resources include resources in the second COT except the third resources or resources used for sharing in the second COT.

In a possible implementation, the resource indication information includes at least one of the following:

Resources used for the second terminal’s own transmission;

Resources shared with other terminals in the second COT. The resources shared with other terminals may be potential resources for sharing, that is, they may not be shared, released, etc. in the end, and there is no restriction on this;

The remaining resources in the second COT except those used for own transmission;

The resources of the second COT;

The time domain starting position of the second COT;

The time domain end position of the second COT;

The time domain length of the second COT;

Structural information of the second COT.

In the fourth aspect, embodiments of the present application provide a resource exclusion method, where the method can be executed by the first terminal or by components of the first terminal (such as a processor, a chip, or a chip system, etc.). The resource exclusion method may include: the first terminal determines a first resource used for transmission by the first terminal, and initializes the first channel access time COT according to the first resource;

The first terminal sends COT sharing indication information, and the COT sharing indication information is used to indicate the second resource to be shared in the first COT.

By implementing the method described in the third aspect, COT sharing can be achieved.

In a possible implementation, the COT sharing indication information is carried in at least one of the following: first-level side link control information SCI, second-level SCI or media access control-control element MAC-CE.

Implementing this method can realize the bearing of COT sharing indication information.

In a possible implementation manner, the number of bits occupied by the COT sharing indication information is predefined, or is preconfigured by the network device (RRC).

By implementing this method, the number of bits occupied by the COT sharing indication information is predefined or the network device is preconfigured, which can reduce the complexity of blind detection of the COT sharing indication information.

In a possible implementation, the COT sharing indication information is carried in the second-level SCI or the MAC-CE; the method further includes:

The first terminal sends a first-level SCI, and the first-level SCI includes at least one of the following or the first-level SCI may indicate other parameters to determine at least one of the following according to the other parameters: and the first-level SCI Format information of the second-level SCI associated with the SCI; indication information used to indicate that the second-level SCI or the MAC-CE associated with the first-level SCI contains the COT sharing indication information; the The number of bits occupied by the COT sharing indication information; the number of the COT indication information.

By implementing this method, the first-level SCI indicates the second-level SCI or MAC-CE carrying the information carrying the COT sharing indication, thereby avoiding blind detection of the terminal receiving the information carrying the COT sharing indication.

In a fifth aspect, embodiments of the present application provide a resource exclusion method, where the method can be executed by the second terminal or by components of the second terminal (such as a processor, a chip, or a chip system, etc.). The resource exclusion method may include: the second terminal receives COT sharing indication information sent by the first terminal according to the first information, where the first information includes information indicating whether to include COT sharing indication information. information and/or information indicating the number of bits of the COT sharing indication information, the COT sharing indication information being used to indicate the second resource to be shared in the first COT, the first COT being the first terminal according to the first COT. A COT for resource initialization, the first resource is used for transmission by the first terminal;

The second terminal performs transmission according to the resources indicated by the COT sharing indication information.

By implementing the method described in the fifth aspect, COT sharing can be realized and the terminal can avoid blind detection of COT sharing indication information.

Specifically optionally, the second terminal may determine whether the first-level side link control information SCI, the second-level SCI or the media access control-control element MAC-CE contains COT sharing indication information, and/or determine COT sharing The number of bits occupied by the indication information determines the resource where the COT sharing indication information is located or the way to receive the COT sharing indication information, so that the COT sharing indication information is received on the corresponding resource and transmitted according to the COT sharing indication information.

In a possible implementation manner, the number of bits occupied by the COT sharing indication information is predefined, or is preconfigured by the network device.

In a possible implementation, the method further includes:

The second terminal receives the first-level SCI sent by the first terminal, and the first-level SCI includes at least one of the following: format information of the second-level SCI associated with the first-level SCI; Instruction information indicating that the second-level SCI or the MAC-CE associated with the first level includes the COT sharing indication information; the number of bits occupied by the COT sharing indication information;

The second terminal receives the COT sharing indication information sent by the first terminal, including:

The second terminal receives the COT sharing indication information contained in the second-level SCI or the MAC-CE according to the first-level SCI.

It should be noted that the beneficial effects on the second terminal side may refer to the beneficial effects on the first terminal side, and the second terminal side will not be described again.

In a sixth aspect, embodiments of the present application provide a resource exclusion method, wherein the method can be executed by the first terminal or by components of the first terminal (such as a processor, a chip, or a chip system, etc.). The resource exclusion method may include: the first terminal determines the reserved resources of the second terminal;

The first terminal excludes a first candidate resource from a candidate resource set, and a resource exclusion condition is satisfied between the first candidate resource and the reserved resource. The resource exclusion condition includes the reserved resource and the third resource. One candidate resource overlaps in the time domain.

By implementing the method described in the sixth aspect, the LBT conflict problem in the frequency division multiplexing scenario of reserved resources and candidate resources can be effectively avoided.

In a possible implementation, when the first terminal meets the third condition, the resource exclusion condition also includes an overlap between the first candidate resource and the reserved resource in the frequency domain. In other words, , in this case, the first candidate resource and the reserved resource will be excluded only if they overlap in both the time domain and the frequency domain. Only time domain overlap will not be excluded. The overlap may include partial overlap or complete overlap, which is not limited in this application;

The third condition includes that at least one of the following parameters of the first terminal and the second terminal is the same: LBT type, channel priority CAPC, CPE, contention window value, and counter initial value N. It can be understood that this counter N is used in the LBT type 1 process, which affects the number of times channel detection is performed and the total duration of LBT.

This method is implemented to selectively exclude time domain overlap or time-frequency domain overlap to avoid excessive exclusion.

In a seventh aspect, embodiments of the present application provide a resource exclusion method, wherein the method can be executed by the first terminal or by components of the first terminal (such as a processor, a chip, or a chip system, etc.). The resource exclusion method may include: the first terminal determines the reserved resources of the second terminal;

When the reserved resource overlaps with the first candidate resource in the candidate resource set in the time domain, the first terminal performs channel access according to the LBT parameter information of the second terminal.

By implementing the method described in the sixth aspect, it is convenient for the first terminal to determine the time to start performing LBT, and the LBT conflict problem in the frequency division multiplexing scenario of reserved resources and candidate resources can be effectively avoided.

In a possible implementation, the method further includes:

The first terminal receives the LBT parameter information from the second terminal, and the LBT parameter information includes at least one of the following: LBT type, CAPC, CPE, contention window value, and counter initial value N.

In an eighth aspect, embodiments of the present application provide a resource exclusion method, where the method can be executed by the first terminal or by components of the first terminal (such as a processor, a chip, or a chip system, etc.). The resource exclusion method may include: the first terminal determines the second Reserved resources of the terminal;

The first terminal excludes a first candidate resource from a set of candidate resources, a resource exclusion condition is satisfied between the first candidate resource and the reserved resource, and the resource exclusion condition includes the end of the time domain of the reserved resource. The position is before the starting time domain position of the first candidate resource, and the time interval between the time domain end position of the reserved resource and the starting time domain position of the first candidate resource is less than or equal to the first time domain position. One interval.

It can be understood that this embodiment does not limit the resource sensing method, including full sensing or partial sensing, etc.

By implementing the method described in the eighth aspect, the LBT conflict problem caused by reserved resources before candidate resources can be effectively solved.

In a possible implementation, the first interval is a predefined value, or is determined by at least one of the following parameters: the LBT type of the first terminal, CAPC, CPE, contention window value, counter initial value, the The priority of the second terminal, the priority of the first terminal, and the subcarrier spacing. The priority of the terminal may include at least one of the following: terminal priority, service priority, physical layer priority, COT priority, resource priority, CAPC, etc.

By implementing this method, the value of the first interval can be determined, thereby effectively solving the LBT conflict problem caused by reserved resources before candidate resources.

In a possible implementation, the resource exclusion condition also includes that the first terminal and the second terminal do not meet the COT sharing condition. In other words, the distance between the candidate resources and the reserved resources is less than or equal to the first distance, and When the COT sharing conditions are not met, the candidate resources need to be excluded. Among them, the COT sharing conditions include at least one of the following: having a sending and receiving relationship; the Source ID/destination ID is the same; the priority of the first terminal is higher than or not lower than the reserved resource. The priority of the second terminal.

Implementing this method further limits resource exclusion conditions to avoid excessive exclusion.

In a possible implementation, the resource exclusion condition further includes that the priority of the first terminal is less than or equal to a third priority threshold.

In a ninth aspect, embodiments of the present application provide a resource exclusion method, where the method can be executed by a second terminal or by a component of the second terminal (such as a processor, a chip, or a chip system, etc.). The resource exclusion method may include: the time domain end position of the reserved resource of the second terminal is before the starting time domain position of the first candidate resource of the first terminal, and the time domain end position of the reserved resource is the same as the time domain end position of the reserved resource of the first terminal. When the time interval between the starting time domain positions of the first candidate resources is less than or equal to the first interval, the second terminal adjusts the data transmission on the reserved resources. After the adjustment, the second terminal adjusts the data transmission on the reserved resources. There is no data transmission by the second terminal on the first resource, and the first resource is located at the end of the reserved resources in the time domain. Exemplarily, the specific method of adjusting data transmission may be: rate matching, or discarding the end of the corresponding transmission. Rate matching can be understood as occupying less resources, but still transmitting a complete transport block (transport block), and the code rate increases.

By implementing the method described in the ninth aspect, the LBT conflict problem caused by reserved resources before candidate resources can be effectively solved.

In a possible implementation, before the second terminal adjusts data transmission on the reserved resources, the method further includes:

It is determined that the priority of the first terminal is higher than the priority of the second terminal.

By implementing this method, the timing for the second terminal to adjust data transmission is further limited, thereby avoiding excessive adjustment.

In a possible implementation, the first resource occupies 1 symbol in the time domain, or the time domain length of the first resource is a (pre)configured length, or the time domain length of the first resource It is determined based on at least one of the first terminal's LBT type, CAPC, CPE, contention window value, and counter initial value N.

By implementing this method, the length of the time domain at the end of which the second terminal gives up the reserved resources can be further limited to balance between avoiding conflicts and effectively utilizing resources.

In a tenth aspect, the present application provides a resource sharing method, wherein the method can be executed by the first terminal or by components of the first terminal (such as a processor, a chip, or a chip system, etc.). The resource sharing method can include:

The first terminal receives COT sharing indication information, the COT sharing indication information is used to instruct (or authorize) the first terminal to use the first resource in the first COT for transmission;

The time domain interval between the first resource and the resource where the COT sharing indication information is located is greater than or equal to the first duration.

By implementing the method of the tenth aspect, a certain amount of time is required because the terminal needs to perform decoding, packet encoding, etc. between receiving the COT sharing indication information and preparing data to be sent. Therefore, this application defines that there needs to be a minimum interval between the end position of sending COT sharing indication information and the starting position of the resource used for sharing, so as to allow enough time for data processing.

In a possible implementation, the first duration is determined based on (pre)configuration, and/or service priority (or physical layer priority), and/or subcarrier spacing, and/or UE capabilities.

In an eleventh aspect, this application provides a resource sharing method, which is characterized by including:

The second terminal or network device sends COT sharing indication information, and the COT sharing indication information is used to instruct (or authorize) the first terminal Use the first resource in the first COT for transmission;

In a twelfth aspect, embodiments of the present application provide a communication device for executing the method in any possible implementation manner of the first to eleventh aspects. The communication device includes a unit that performs the method in any possible implementation manner of the first to eleventh aspects.

For example, the above communication device may include a transceiver unit and a processing unit.

In a thirteenth aspect, an embodiment of the present application provides a communication device. The communication device includes a processor, configured to execute the method in any possible implementation manner of the above-mentioned first to eighth aspects. Alternatively, the processor is configured to execute a program stored in the memory. When the program is executed, the method in any possible implementation manner of the above-mentioned first to eleventh aspects is executed.

In a possible implementation, the memory is located outside the communication device.

In a possible implementation, the memory is located within the above communication device.

In the embodiment of the present application, the processor and the memory can also be integrated into one device, that is, the processor and the memory can also be integrated together.

In a possible implementation, the communication device further includes a transceiver, which is used to receive signals or send signals.

In a fourteenth aspect, embodiments of the present application provide a communication device. The communication device includes a logic circuit and an interface. The logic circuit is coupled to the interface; the interface is used to receive information, and the logic circuit is used to Perform processing operations.

It is understandable that for the specific description of the fourteenth aspect, reference may be made to any possible implementation manner among the first to eleventh aspects, and will not be described in detail here.

In a fifteenth aspect, embodiments of the present application provide a computer-readable storage medium. The computer-readable storage medium is used to store a computer program. When it is run on a computer, any one of the above-mentioned first to eleventh aspects is enabled. Possible implementations are shown in which the method is executed.

In a sixteenth aspect, embodiments of the present application provide a computer program product. The computer program product includes a computer program or computer code. When it is run on a computer, any of the above-mentioned first to eleventh aspects can be realized. The method shown in the method is executed.

In a seventeenth aspect, embodiments of the present application provide a computer program. When the computer program is run on a computer, the method shown in any possible implementation manner in the above-mentioned first aspect to the eleventh aspect is executed.

In an eighteenth aspect, embodiments of the present application provide a wireless communication system. The wireless communication system includes a first terminal and a second terminal. Exemplarily, the system further includes a third terminal.

For the technical effects achieved in the above-mentioned twelfth aspect to the eighteenth aspect, reference can be made to the technical effects of the first aspect to the eleventh aspect or the beneficial effects in the method embodiments shown below, and will not be repeated here.

Description of drawings

Figure 1 is a schematic diagram of resource reservation provided by an embodiment of the present application;

Figure 2a is a schematic diagram of a communication system provided by an embodiment of the present application;

Figure 2b is a schematic diagram of another communication system provided by an embodiment of the present application;

Figure 3 is a schematic flowchart of a resource exclusion method provided by an embodiment of the present application;

Figure 4a is a schematic diagram of a candidate resource set provided by an embodiment of the present application;

Figure 4b is a schematic diagram of a candidate resource set provided by an embodiment of the present application;

Figure 4c is a schematic diagram of a candidate resource set provided by an embodiment of the present application;

Figure 4d is a schematic diagram of the position difference between two candidate resources in the time domain provided by an embodiment of the present application;

Figure 4e is a schematic diagram of the position difference between two candidate resources in the frequency domain provided by an embodiment of the present application;

Figure 5 is a schematic diagram of resource exclusion provided by an embodiment of the present application;

Figure 6a is a schematic diagram of a resource conflict provided by an embodiment of the present application;

Figure 6b is a schematic diagram of a resource conflict provided by an embodiment of the present application;

Figure 6c is a schematic diagram of a resource conflict provided by an embodiment of the present application;

Figure 6d is a schematic diagram of a resource conflict provided by an embodiment of the present application;

Figure 7a is a schematic diagram of a conflict between COT and reserved resources provided by an embodiment of the present application;

Figure 7b is a schematic diagram of a conflict between COT and reserved resources provided by an embodiment of the present application;

Figure 8 is a schematic flowchart of another resource exclusion method provided by an embodiment of the present application;

Figure 9a is a schematic diagram of reserved resources provided by an embodiment of the present application;

Figure 9b is a schematic diagram of a COT interrupt provided by an embodiment of the present application;

Figure 10 is a schematic flowchart of yet another resource exclusion method provided by an embodiment of the present application;

Figure 11 is a schematic flowchart of yet another resource exclusion method provided by an embodiment of the present application;

Figure 12a is a schematic diagram of an LBT conflict provided by an embodiment of the present application;

Figure 12b is a schematic diagram of candidate resource exclusion provided by an embodiment of the present application;

Figure 12c is a schematic diagram of an LBT provided by an embodiment of the present application;

Figure 13 is a schematic flowchart of yet another resource exclusion method provided by an embodiment of the present application;

Figure 14 is a schematic flowchart of yet another resource exclusion method provided by an embodiment of the present application;

Figure 15 is a schematic diagram of an LBT conflict provided by an embodiment of the present application;

Figure 16 is a schematic flowchart of yet another resource exclusion method provided by an embodiment of the present application;

Figure 17 is a schematic flowchart of a resource sharing method provided by an embodiment of the present application;

Figures 18 to 20 are schematic structural diagrams of a communication device provided by embodiments of the present application.

Detailed ways

In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described below in conjunction with the accompanying drawings.

The terms "first" and "second" in the description, claims, and drawings of this application are only used to distinguish different objects, but are not used to describe a specific sequence. Furthermore, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or equipment that includes a series of steps or units is not limited to the listed steps or units, but optionally also includes unlisted steps or units, or optional It also includes other steps or units inherent to these processes, methods, products or equipment.

Reference herein to "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment may be included in at least one embodiment of the present application. The appearances of this phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those skilled in the art will understand, both explicitly and implicitly, that the embodiments described herein may be combined with other embodiments.

In this application, "at least one (item)" means one or more, "plurality" means two or more, "at least two (items)" means two or three and three Above, "and/or" is used to describe the relationship between associated objects, indicating that there can be three relationships. For example, "A and/or B" can mean: only A exists, only B exists, and A and B exist simultaneously. In this case, A and B can be singular or plural. The character "/" generally indicates that the related objects are in an "or" relationship. "At least one of the following" or similar expressions refers to any combination of these items. For example, at least one of a, b or c can mean: a, b, c, "a and b", "a and c", "b and c", or "a and b and c" ".

Before introducing the method of this application in detail, some concepts involved in this application will be briefly introduced.

1. Listen before talk (LBT)

In unlicensed spectrum, devices need to perform a channel access process, also known as LBT, before transmitting. LBT mainly determines whether the channel is idle through channel detection. If LBT is successful, that is, the channel is idle, the device can access the channel and transmit. If the channel is occupied, that is, LBT will fail and transmission will not be possible.

2. Channel occupancy time (COT)

COT refers to the evolved base station (evolved Node B, eNB)/new generation base station (generation Node B, gNB)/user equipment (user equipment, UE) and other equipment that can initialize a COT after performing the channel access process, which has certain The duration is the COT. The channel occupancy time can be shared for transmission between eNB/gNB/UE(s).

3. COT sharing

COT sharing is also channel occupancy time sharing. As mentioned above, after the device performs the channel access process and initializes the COT, it can share the resources that the device does not need to occupy with other devices. The other devices can be called other shared devices. After the device performs the channel access process and initializes the COT The equipment is called this equipment. Some regulations require that other devices being shared have a send-and-receive relationship with the current device. For example, if other devices transmit unicast services, the receiving device should be this device; if other devices transmit multicast services, the receiving device should include this device. Before other devices use this COT for transmission, they need to first perform the channel access process.

4. Channel access type

Channel access types can be divided into LBT type 1, type 2A, type 2B, type 2C, SCSt (short control signaling transmission), and the access difficulty decreases in order.

LBT type 1 needs to detect that the channel is idle for the longest time before successful access, and is the least easy to satisfy. The general process includes: after performing a channel detection to be idle, initializing a counter N (i.e. counter initial value N) according to the channel access priority class (CAPC), and every subsequent 9us channel detection to be idle will be N Decrease 1 until N=0, and perform another 9us channel If it is detected as idle, the channel access is deemed to be successful. After the channel access is successful, a COT with a certain length can be initialized, and the COT can be shared with other devices for transmission. After completing a transmission in the COT, when sharing it with other devices, if the interval between the last transmission and the previous transmission is 25us/16us/no more than 16us, type 2A/2B/2C access can be performed respectively. Otherwise, type 1 access must be performed. enter.

LBT type 2A, channel access process with a total length of 25us.

LBT type 2B, channel access process with a total length of 16us.

LBT type 2C does not need to perform channel detection and directly uses the channel for transmission, but the total transmission time does not exceed 584us.

SCSt does not need to perform channel detection and directly uses the channel for transmission, but it needs to meet the following requirements:

On the 2.4GHz frequency band: the duty cycle of SCSt does not exceed 10% in 50ms;

In the 5GHz/6GHz frequency band: no more than 50 SCSts in 50ms and the total duration does not exceed 2.5ms;

On the 60GHz frequency band: the total duration of SCSt in 100ms does not exceed 10ms.

5. Resource selection and resource reservation:

NR V2X is divided into two modes: Mode1 and Mode2. In Mode1, there is a base station that can be responsible for resource scheduling, while Mode2 assumes that there is no base station, so the UE needs to independently select resources for transmission according to certain rules. Since sidelink is a distributed system, when the UE selects resources, in order to avoid conflicts between transmission resources selected by multiple UEs, a resource exclusion mechanism is introduced. Simply put, the UE listens to the SCI of other UEs in the sensing window, and excludes resources that exceed the RSRP threshold from the resource selection window based on the resources reserved by other UEs indicated by the SCI. Thus, the set of candidate resources is determined from the resource selection window and reported to the Media Access Control (Medium Access Control, MAC) layer, which selects the resources ultimately used for transmission. R16 and R17 support full sensing and partial sensing, etc., and there are certain differences in the range of the sensing window and the selection window, and in determining the number of candidate resources. The following takes full sensing as an example:

Step 1: Determine the candidate resource selection window, in which the total number of candidate resources with a single-slot granularity is M.

Step 2: Determine the sensing window, and perform the following steps based on the decoded physical sidelink control channel (PSCCH) and the measured reference signal received power (RSRP) in the time slot included in the sensing window:

Step 3: Determine the RSRP threshold based on high-level parameters.

Step 4: The candidate resource set SA is initialized to all single-slot candidate resources in the resource selection window.

Step 5: Candidate resources that meet all of the following conditions are excluded from the set:

A. The time slots not monitored in step 2

B For any period value allowed by high-level parameters, in the time slot All sub-channels in the time slot that receive SCI 1-A and the Resource reservation period is configured with a period value and indicated satisfy Condition C in step 6.

Step 5a: If the number of resources in the candidate resource set is less than X*M (X high-level parameter indication), then the resources in the candidate set SA are initialized to all the resources in step 4.

Step 6: Candidate resources that meet all of the following conditions are excluded from the candidate resource set:

a) UE is in the time slot SCI 1-A is received in, and the Resource reservation period (if present), and Priority indicate the values of P _{rsvp_RX} and prio _RX respectively;

b) The RSRP measurement value for the received SCI 1-A is higher than the threshold value;

c) Determine whether the candidate resources conflict with resources reserved by other UEs. As shown in Figure 1, it is a schematic diagram of resource reservation. The resources reserved by UE1 and UE2 fall within the resource selection window. It needs to be determined whether the reserved resources conflict with the resources reserved by other UEs. Candidate resource conflicts in the candidate resource set. SCI indicates the reservation of resources that you may use in the future. Resource reservation is divided into two types: intra-cycle reservation and periodic reservation, which are used for possible future transmission (such as retransmission) and periodic service transmission respectively.

Step 7: If the number of resources in the candidate resource set is less than X*M (X high-level parameter indication), then for each priority, the RSRP threshold value is increased by 3dB, and step 4 is entered.

The UE reports the finally obtained candidate resource set to the higher layer.

Optionally, in some embodiments, after performing the above step 7, you can also proceed to step 6 for execution.

This application can be applied to communication systems such as cellular communication systems, Internet of Vehicles, terminal direct communication (sidelink communication), and WiFi. Cellular communication systems may include, but are not limited to, long term evolution (LTE) systems, universal mobile telecommunication systems (UMTS), fifth generation (5th generation, 5G) systems, new radio (NR) ) and other new systems that emerge with the development of technology.

As shown in Figure 2a, which is an architectural schematic diagram of a communication system provided by an embodiment of the present application, the communication system 100 may include a first terminal and a second terminal. communication through side links. It can be understood that the use of two terminals for side link communication in Figure 2a is only an example. The number of terminals included in the communication system 100 does not need to be limited. The terminals can communicate through side link for communication.

As shown in Figure 2b, which is an architectural schematic diagram of another communication system provided by an embodiment of the present application, as shown in Figure 2b, the communication system 200 may include a network device, a first terminal and a second terminal, where the first terminal Information is sent to the network device through the uplink, and the network device sends information to the first terminal through the downlink. The first terminal and the second terminal communicate through the side link. Similarly, the second terminal can also send information to the network device through the uplink, and the network device can send information to the second terminal through the downlink. The first terminal and the second terminal may be within the coverage of the network equipment, or one of the first terminal and the second terminal may be within the coverage of the network equipment, while the other terminal is not within the coverage of the network equipment, or It may be that neither the first terminal nor the second terminal is within the coverage of the network device, which is not limited in this application. It can be understood that the communication system including one network device and two terminals in FIG. 2b is only an example, and the number of terminals and/or the number of network devices included in the communication system 200 is not limited. Terminals located within the coverage of network equipment can perform side-link communications with terminals located outside the coverage of the network.

The terminal in the embodiment of the present application is a device with wireless transceiver function. A terminal may be called user equipment (UE), access terminal, terminal, subscriber unit, user station, mobile station, remote station, remote terminal, mobile device, user terminal, user agent or User devices, etc. In a possible implementation, the terminal can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; it can also be deployed on water (such as a ship, etc.). In a possible implementation, the terminal can be a handheld device with wireless communication function, a vehicle-mounted device, a wearable device (such as smart glasses, bracelets and watches), a sensor, a terminal in the Internet of Things, a terminal in the Internet of Vehicles, UAVs, fifth generation (5th generation, 5G) networks, information processing equipment, display equipment, AR/VR/MR equipment, and any form of terminal equipment in future networks, etc., are not limited in the embodiments of this application. Optionally, the terminal in this embodiment of the present application may be a road side unit (RSU). The terminal in the embodiment of this application may be a vehicle, an onboard unit (OBU) or a vehicle module, or a chip or a system on chip (SOC).

It can be understood that the side link communication between the terminals shown in the embodiments of this application can be through device-todevice (D2D), machine-to-machine (M2M), etc. communication.

It can be understood that the terminal shown in the embodiment of this application can also be a device in the Internet of Things (IoT), etc. The IoT network may include, for example, the Internet of Vehicles. Among them, the communication methods in the Internet of Vehicles system are collectively called vehicle to other devices (vehicle to X, V2X, X can represent anything). For example, the V2X can include: vehicle to vehicle (vehicle to vehicle, V2V) communication. Infrastructure (vehicle to infrastructure, V2I) communication, communication between vehicles and pedestrians (vehicle to pedestrian, V2P) or vehicle and network (vehicle to network, V2N) communication, etc.

The network device in the embodiment of the present application can provide wireless access services for terminals, schedule wireless resources to access terminals, and provide reliable wireless transmission protocols and data encryption protocols, etc. It can be understood that in systems with different wireless access technologies, the names of devices with network device functions may be different, and this application will not show them one by one.

For example, the network equipment of this application may include base stations, transmission reception points (TRP), customer terminal equipment (customer-premises equipment, CPE), routers, network access equipment, etc.

It is understandable that the name of the network device is different in different communication systems. For example, the network device can be a traditional UMTS/LTE (Universal Mobile Telecommunications System/Long Term Evolution) wireless communication system. Macro base station eNB (evolved node B), in HetNet (Heterogeneous Network, heterogeneous network) scenario, can be micro base station eNB, in distributed base station scenario, it can be baseband processing unit BBU (Base Band Unit, baseband unit) and radio frequency unit RRU (Remote Radio Unit, radio frequency remote unit), in the CRAN (Cloud Radio Access Netowrk, cloud wireless access network) scenario, it can be the baseband pool BBU pool and radio frequency unit RRU, and in the future wireless communication system, it can be gNB.

It should be noted that the network architecture and business scenarios described in the embodiments of this application are for the purpose of more clearly explaining the technical solutions of the embodiments of this application and do not constitute a limitation on the technical solutions provided by the embodiments of this application. Those of ordinary skill in the art It can be seen that with the evolution of network architecture and the emergence of new business scenarios, the technical solutions provided by the embodiments of this application are also applicable to similar technical problems.

It should be noted that each technical solution (or each embodiment) of the present application can be implemented independently or can also be implemented in combination based on certain intrinsic relationships. This application is not limited. And various terms and definitions between various embodiments may be referenced to each other. In each embodiment of the present application, different implementation methods can also be implemented in combination or independently.

It can be understood that, for convenience of description, the resources in subsequent embodiments of the present application can be understood as time domain resources and/or frequency domain resources, which will not be described again in the full text. The overlap described in this application may refer to time domain and/or frequency domain overlap. In addition, the overlap in the embodiment of the present application may include partial overlap or full overlap, and is not limited.

The length of the COT mentioned in this application may be called the first duration. For example, the first duration may be the length of the COT, or a length not greater than the maximum length of the COT corresponding to CAPC. This application does not limit the resources reserved for the terminal’s own transmission to be located in the COT The starting position of the COT. In subsequent embodiments, it is only an example that the resources reserved for the terminal's own transmission are located at the starting position of the COT. For example, resources reserved for the terminal's own transmission may be located in the middle or at the end of the COT. And multiple resources can be reserved, which can be located at different locations of the COT and can be continuous or discontinuous in the time domain.

It should be noted that when this application determines reserved resources and/or performs resource exclusion, the default exclusion conditions include that the RSRP of the PSCCH and/or the corresponding PSSCH where the resource indication information of the reserved resources is located is greater than the threshold value. In other words, The reserved resources meet the requirement that the RSRP required in the resource exclusion conditions is greater than the threshold value. That is, the RSRP of the PSCCH where the resource indication information of the reserved resource is located and/or the corresponding PSSCH is greater than the threshold value can be added as an exclusion condition to the corresponding exclusion condition. Optionally, the default resource exclusion conditions include that the priorities of the terminals that reserve resources and the terminals that perform resource exclusions meet the conditions. In other words, the priorities of the terminals that reserve resources and the terminals that perform resource exclusions meet the requirements of the resource exclusion conditions. Priority conditions. That is, the priority satisfaction conditions of the terminal that reserves resources and the terminal that performs resource exclusion can be added as exclusion conditions to the corresponding exclusion conditions.

Please refer to FIG. 3 , which is a schematic flowchart of a resource exclusion method provided by an embodiment of the present application. Figures 2a to 2b can be system architecture diagrams applicable to the resource exclusion method. As shown in Figure 3, the method may include: 101-103, where the execution order of each step is not limited by the embodiment of the present application. As shown in the figure, the resource exclusion method in this embodiment of the present application includes but is not limited to the following steps:

101. The first terminal determines a candidate resource set.

In some embodiments, the candidate resource set includes one or more candidate resources. Wherein, one candidate resource may only include the first resource used for transmission by the first terminal, or one candidate resource may include the first resource and the second resource. In other words, the candidate resource includes the first resource, which means that the candidate resource may be used. Transmit on the first terminal; if the candidate resource includes the second resource, it means that the candidate resource can be used to share with other terminals for transmission, or potentially used to share with other terminals for transmission (that is, it may eventually be shared, or It may not be shared and there will be no restrictions).

For example, the second resource may be a resource other than the first resource in the first COT of the first terminal or a resource used for sharing in the first COT; or, a candidate resource may only include the second resource. Among them, the resources in the first COT other than the first resource can be understood in various ways. Examples are given below. For example, the resources other than the first resource in the first COT may refer to resources other than the time domain resources of the first resource without limiting the frequency domain. In other words, the resources other than the first resource may refer to the first COT. Any resource that does not overlap with the first resource in the internal time domain. For another example, the resources in the first COT other than the first resource may be resources other than the time domain resource of the first resource, and the restricted frequency domain is at the same position as the frequency domain of the first resource. In other words, the resources except the first resource may be resources other than the time domain resource of the first resource. The resources outside the resource may refer to any resource within the first COT that does not overlap with the first resource in the time domain but is the same as the first resource in the frequency domain. For another example, the resources other than the first resource in the first COT may refer to resources other than the time-frequency domain resources of the first resource. In other words, the resources other than the first resource may refer to the time-frequency domain resources within the first COT. Any resource above that does not overlap with the first resource. It can be understood that the resources used for sharing in the first COT are just a proxy, and can also be any other names. The resources used for sharing in the first COT refer to the potential or may be shared in the first COT. Resources to other terminals, but does not limit whether they will be shared in the end. It should be noted that the granularity of the above resources is not limited and can be single-slot or other granularities.

It can be understood that the first COT of the first terminal can be understood as a COT initialized with the first resource used for transmission by the first terminal. In other words, the first terminal can be initialized if the LBT is successful by performing LBT before the first COT. The first cot. Among them, initializing COT can also be understood as creating COT.

In a possible implementation, a candidate resource can occupy a basic time unit in the time domain, and the basic time unit can be understood as the granularity of the candidate resource. For example, the basic time unit may include any of the following: radio frame, subframe, time slot, mini-slot, symbol, second, millisecond, microsecond, etc. If a candidate resource occupies a time slot in the time domain, it can It is understood that the granularity of candidate resources is single-slot granularity. As shown in Figure 4a, it is a schematic diagram of a candidate resource set provided by an embodiment of the present application. Each candidate resource (or resource) included in the candidate resource set occupies one time slot in the time domain. Among them, the frequency domain of the candidate resources is not limited and can be any X consecutive or non-continuous RBs or interlace or sub-channel or other frequency domain resource granularity. X depends on requirements or configuration or high-level signaling or base station instructions, etc.

In some embodiments, if the resource granularity in the candidate resource set is a basic time unit, one candidate resource may only include the first resource used for transmission by the first terminal. If it is necessary to obtain the resources used by the first terminal for sharing, the first COT may be initialized with the first resources, thereby obtaining the resources used by the first terminal for sharing in the COT. Taking FIG. 4a as an example, candidate resource A, candidate resource B, candidate resource C, and candidate resource D are all resources used for transmission by the first terminal.

In some embodiments, if the resource granularity in the candidate resource set is a basic time unit, the resources in the candidate resource set not only include the first resource used for transmission by the first terminal, but also include the second resource shared by the first terminal. , then a candidate resource can be understood as including multiple resources. The granularity of each resource is a basic time unit, that is, one resource occupies a basic time unit in the time domain. The multiple resources include the first resource and the second resource. Multiple resources can be multiple resources selected by using basic time units as granularity. Continue with pictures 4a As an example, resource A and resource B may include resources used for transmission by the first terminal (for example, resource A), and other resources B may be resources selected for sharing. One candidate resource can be understood In order to include resource A and resource B, in this embodiment, the resources of the entire COT are selected based on the basic time unit granularity.

In some embodiments, if the resource granularity in the candidate resource set is a basic time unit, the resources in the candidate resource set not only include the first resource used for transmission by the first terminal, but also include the second resource shared by the first terminal. , that is, the candidate resource can be used for transmission by the first terminal or can be shared with other terminals for transmission. The granularity of each resource is a basic time unit, that is, one resource occupies a basic time unit in the time domain. In this embodiment, the resources of the entire COT are selected based on the basic time unit granularity.

In another possible implementation, a candidate resource can occupy a length of one COT in the time domain. It can be understood that the length of a COT occupied by the candidate resource in the time domain can be understood as a candidate resource including the first resources and secondary resources. The COT length occupied by a candidate resource in the time domain may be determined based on the CAPC, or may be determined by the first terminal device, but it needs to meet the constraints of the maximum COT length corresponding to the CAPC. Among them, the frequency domain of the candidate resources is not limited and can be any X consecutive or non-continuous RBs or interlace or sub-channel or other frequency domain resource granularity. X depends on requirements or configuration or high-level signaling or base station instructions, etc.

As shown in Figure 4b and Figure 4c, it is a schematic diagram of another candidate resource set provided by the embodiment of the present application. Each candidate resource included in the candidate resource set occupies 1 COT in the time domain. It can be understood that in this implementation, one candidate resource includes a first resource and a second resource.

In a possible implementation manner, there is no overlap between the COTs occupied by each candidate resource in the time domain. As shown in Figure 4b, there is no overlap between the COTs occupied by each candidate resource. It is understandable that there can be a certain gap between the COTs occupied by each candidate resource, that is, there is a certain gap between the end position of the previous COT and the starting position of the next COT.

In a possible implementation, there may be partially overlapping candidate resources in the candidate resource set. In other words, overlap between COTs occupied by the candidate resources is allowed. It should be noted that this overlap can be understood as time domain overlap and/or or frequency domain overlap. As shown in Figure 4c, there are overlapping candidate resources in the candidate resource set.

In some embodiments, the position difference between two candidate resources in the candidate resource set in the time domain may be N basic time units, where N is an integer greater than or equal to 1, and the basic time units may include but are not limited to wireless frames. , subframe, slot, mini-slot, symbol, second, millisecond, microsecond, etc. The position difference between two candidate resources in the time domain can be understood as the starting position difference or the ending position difference of the two candidate resources. The two candidate resources can be understood as the two adjacent COTs corresponding to the time domain. candidate resources. As shown in FIG. 4d , a schematic diagram of the position difference between two candidate resources in the time domain is provided in an embodiment of the present application, that is, the starting position difference of the two candidate resources. It should be noted that if N=1, it can be understood that any continuous resource whose time domain length is the COT length can be used as a candidate resource. For example, any set of X contiguous slots correspond to one candidate resource (COT).

In some implementations, the position difference in the frequency domain between two candidate resources in the candidate resource set is M basic frequency domain units, where M is an integer greater than or equal to 1. The basic frequency domain unit may include but is not limited to RE, RB, interlace, sub-channel, RB set, sub-carrier, Hz, kHz, MHz, etc. The position difference between two candidate resources in the frequency domain can be understood as the difference between the frequency domain starting positions or the frequency domain ending positions of the two candidate resources. The two candidate resources can be understood as two adjacent ones in the time domain. Two candidate resources corresponding to COT. As shown in Figure 4e, a schematic diagram of the position difference between two candidate resources in the frequency domain is provided in this embodiment of the present application, that is, the starting position difference in the frequency domain of the two candidate resources. The two candidate resources can be understood as resources that are one or more continuous RBs or interlaces or sub-channels in the frequency domain. For example, any set of T contiguous sub-channel corresponds to one candidate resource.

In some embodiments, the frequency domain resources of the candidate resources in the candidate resource set can also be all resources in the frequency domain of the COT or time slot occupied by the candidate resources in the channel or in the resource pool or in the RB set, including RB, interlace, sub-channel.

It should be noted that the position difference in the time domain of two candidate resources in the candidate resource set may be N basic time units, and/or the position difference in the frequency domain may be M basic frequency domain units.

The position difference requirements in the time domain and the position difference requirements in the frequency domain can be used in combination or alone. The above position difference requirements in the time domain need to be met, but there is no limit in the frequency domain. Alternatively, the frequency domain needs to meet the above frequency domain position difference requirements. requirements, the time domain is not limited, or both the time domain and the frequency domain need to meet the above position difference requirements, which is not limited in this application.

102. The first terminal determines the reserved resources of the second terminal.

In some embodiments, the first terminal may determine the reserved resources of the second terminal according to the resource indication information of the second terminal. The reserved resources of the second terminal determined by the first terminal may include at least one of a third resource or a fourth resource, where the third resource may be a resource used by the second terminal for transmission within the second COT of the second terminal. Resources, the fourth resources may include resources in the second COT except the third resources or resources in the second COT for sharing, that is, resources shared with other terminals. The resources used for sharing in the second COT may include some or all resources in the second COT except the third resources, which is not limited in this application. Among them, the assets in the second COT other than the third resources Source can be understood in many ways, as shown below with examples. For example, the resources in the second COT other than the third resource may refer to resources other than the time domain resources of the third resource without limiting the frequency domain. In other words, the resources other than the third resource may refer to the second COT. Any resource that does not overlap with the third resource in the internal time domain. For another example, the resources in the second COT other than the third resource may be resources other than the time domain resource of the third resource, and the restricted frequency domain is at the same position as the frequency domain of the third resource. In other words, the resources except the third resource may be resources other than the time domain resource of the third resource. The resources outside the resource may refer to any resource within the second COT that does not overlap with the third resource in the time domain but is the same as the third resource in the frequency domain. For another example, the resources other than the third resources in the second COT may refer to resources other than the time-frequency domain resources of the third resource. In other words, the resources other than the third resources may refer to the time-frequency domain resources within the second COT. Any resource that does not overlap with the third resource. It is understandable that the resources used for sharing in the second COT are just a proxy, and can also be any other names. The resources used for sharing in the first COT refer to the potential or may be shared in the second COT. Resources to other terminals, but does not limit whether they will be shared in the end. It should be noted that the granularity of the above resources is not limited and can be single-slot or other granularities.

The second COT of the second terminal can be understood as a COT initialized with the third resource used for transmission by the second terminal. In other words, the second terminal performs LBT before the second COT. If the LBT is successful, that is The second COT can be initialized. Among them, initializing COT can also be understood as creating COT.

It can be understood that the third resource and the fourth resource in the embodiment of the present application may be specifically presented in the form of 2 (or more) resources, or 2 (or more) groups of resources, or 2 (or more) Resource collection, there is no limit here. If the third resource includes multiple resources, each resource may be continuous or non-continuous, which is not limited in this application. Similarly, if the fourth resource includes multiple resources, each resource may also be continuous or non-continuous.

In some embodiments, the third resource and the fourth resource may be determined by the first terminal according to the resource indication information, and the resource indication information may be carried in any one of the first-level SCI, the second-level SCI, and the MAC-CE. , or can be carried at different locations in the first-level SCI, second-level SCI, and MAC-CE respectively. For example, the information indicating the third resource is carried on the first-level SCI, and the information indicating the fourth resource is carried on the second-level SCI or MAC CE. Resource indication information can be used to indicate at least one of the following:

Resources used for the second terminal’s own transmission;

The resources of the second COT;

The time domain starting position of the second COT;

The time domain end position of the second COT;

The time domain length of the second COT;

Structural information of the second COT, where the structural information of the second COT may include the terminal identification or service-related identification (Source ID and/or destination ID) occupying the second COT; time domain and/or frequency domain resource allocation (possibly It is resource allocation, bitmap, pattern, etc. for each terminal or each business respectively). In some embodiments, the structural information of the COT can also be called COT shared indication information, COT indication information, COT shared information, etc. For the specific structure, refer to the relevant description of the structural information of the COT in the embodiment of Figure 10. No further details for now.

For example, the frequency domain resources in the second COT indicated by the resource indication information may be continuous or frequency domain interlaced.

For example, the resources in the second COT other than the third resource transmitted by the second terminal, or the resources used for sharing by the second COT may be located in the same frequency domain position as the third resource used by the second terminal for its own transmission, or different frequency domain locations. For example, both the time domain and frequency domain resources of the third resource and the fourth resource need to be indicated. Or, if they are located at the same frequency domain location, the frequency domain resource only needs to be indicated once and does not need to be indicated repeatedly. For example, the time domain and frequency domain resources of the third resource are indicated, and only the time domain resource of the fourth resource is indicated, and the frequency domain position of the fourth resource is the same as that of the third resource.

103. The first terminal excludes the first candidate resource from the candidate resource set, and a resource exclusion condition is satisfied between the first candidate resource and the reserved resource. The resource exclusion condition includes a first condition or a second condition, so The first condition includes a conflict between the first resource and the reserved resource; the second condition includes a conflict between at least one of the first resource or the second resource and the reserved resource.

Since the candidate resources in the candidate set may include at least one of the first resource or the second resource, correspondingly, the first candidate resource may include at least one of the first resource or the second resource; the first resource is the first resource of the first terminal. Resources within the first COT used for transmission by the first terminal, and the second resources include resources within the first COT other than the first resources or resources within the first COT used for sharing. Regarding the resource granularity in the candidate resource set, reference may be made to the description of step 101, which will not be described again here.

The first terminal excludes all first candidate resources that meet the resource exclusion condition from the candidate resource set, where the resource exclusion condition may include the first condition or the second condition. It is understood that the resource exclusion condition does not include the first condition or the second condition. In addition to the conditions, other conditions may also be included, For example, the RSRP of the physical sidelink control channel (PSCCH) or the physical sidelink shared channel (PSSCH) where the resource indication information associated with the reserved resources is located is greater than a threshold, and/or, The priority of the second terminal and the priority of the first terminal meet the conditions. For convenience of description, this application defaults that the candidate resources meet other conditions in the resource exclusion conditions. It should be noted that these other conditions are also applicable to all embodiments of this application. .

The first condition includes that the first resource in the first candidate resource conflicts with the reserved resource. In other words, it is enough to determine whether the first resource conflicts with the reserved resource, and does not care whether the second resource conflicts with the reserved resource. Even if If the second resource conflicts with the reserved resource, but the first resource does not conflict with the reserved resource, then the first condition is not met, that is, the candidate resource is not excluded. As shown in Figure 5, it is an example diagram of resource exclusion provided by the embodiment of the present application, in which resource 1 is the first resource used for transmission by the first terminal, and resource 2 is used for sharing in the first COT of the first terminal. resource, even if the reserved resource conflicts with resource 2, if the resource exclusion condition includes the first condition, the candidate resource will not be excluded.

The second condition includes that at least one of the first resource or the second resource conflicts with the reserved resource. In other words, the first resource and the second resource are regarded as a whole, as long as the whole conflicts with the reserved resource (it may be that the first resource conflicts with the reserved resource). If the reserved resource conflicts, it may be that the second resource conflicts with the reserved resource, or it may be that both the first resource and the second resource conflict with the reserved resource), then the second condition is met and the candidate resource is excluded. Continuing to take the example shown in FIG. 5 as an example, if the resource exclusion condition includes the second condition, resource 2 conflicts with the reserved resource, so the second condition is met, and therefore the candidate resource needs to be excluded.

It should be noted that the above conflict may be overlapping of time domain resources and/or overlapping of frequency domain resources. In some implementations, candidate resources that overlap in time domain with reserved resources may be preferentially excluded. In other words, candidate resources that do not overlap in time domain with reserved resources may be preferentially selected. In the drawings of this application, the overlap in time and frequency domains is used as an example. Furthermore, the overlap may be partial or full.

As can be seen from the above examples, when the resource exclusion conditions include different conditions (i.e., the first condition or the second condition), the results of the resource exclusion may be different. For example, in the example shown in Figure 5, if the resource exclusion conditions If the first condition is included, the candidate resource does not need to be excluded. If the resource exclusion condition includes the second condition, the candidate resource needs to be excluded.

In this embodiment of the present application, the resource exclusion condition includes the first condition or the second condition may be determined based on at least one of the following:

Specifically optional, the priority of the first terminal may be service priority, physical layer priority, resource priority (resource granularity is not limited; resources may refer to time domain and/or frequency domain resources), Priority, at least one of CAPC.

In another possible implementation, if the first terminal priority is greater than or equal to the second priority threshold, the resource exclusion condition may include the first condition. Since other terminals will avoid the first terminal, it is ensured that the COT of the first terminal is not interrupted. If the first terminal priority is less than the second priority threshold, the resource exclusion condition may include a second condition.

The resources in the first COT may refer to all resources or any one or more resources in the first COT. For example, it may be a first resource used for transmission by the first terminal in the first COT, or a resource used for sharing in the first COT, or other resources in the first COT other than resources used for transmission by the first terminal. Resources, for the convenience of description, this application refers to resources used for sharing in the first COT, or other resources in the first COT other than resources used for transmission by the first terminal, as second resources, that is, they can be second resources. The priority of the resource is compared with the priority of the reserved resource. Optionally, the resource priority may also refer to the priority of the first COT. The reserved resources may refer to all resources or any one or more resources in the resources reserved by the second terminal. For example, it may be resources used for transmission by the second terminal, or resources used for sharing, or other resources besides resources used for transmission by the second terminal. Optionally, the priority of the reserved resource may also refer to the priority of the COT of the second terminal. The resource priority in the first COT can be understood as the priority of the first resource used for transmission by the first terminal in the first COT, or the priority of the second resource used for sharing in the first COT initialized by the first terminal, Or the resource priority of the first COT of the first terminal, or the highest or lowest resource priority in the first COT. The priority of the reserved resources of the second terminal can be understood as the priority of resources used for transmission by the second terminal in the second COT of the second terminal, or the priority of resources used for sharing in the second COT initialized by the second terminal. , or the resource priority of the second COT of the second terminal, or the highest or lowest resource priority within the second COT of the second terminal. The resource priority may refer to at least one of service priority, physical layer priority, UE priority, and CAPC, or at least one of service priority, physical layer priority, UE priority, and CAPC. kind of sure.

In an implementation manner, if the resource priority in the first COT is greater than or equal to the priority of the resource reserved by the second terminal, the resource exclusion condition includes a second condition. This ensures that high-priority or more important first COTs will not be interrupted. If the resource within the first COT If the priority is lower than the priority of the resource reserved by the second terminal, the resource exclusion condition includes the first condition.

In another implementation manner, if the resource priority in the COT is greater than or equal to the priority of the resource reserved by the second terminal, the resource exclusion condition may also include the first condition. Because "low priority avoids high priority", even if the second resource conflicts with the reserved resource, because the resource priority in the first COT is relatively high, the second terminal will avoid it and will not use the reserved resource. The transmission will of course not interrupt the first COT. If the resource priority in the first COT is smaller than the priority of the resource reserved by the second terminal, the resource exclusion condition includes a second condition.

3. Requirement information on whether the second resource is shared;

Specifically and optionally, if the second resource will not be shared with other terminals, the resource exclusion condition includes the first condition. That is, it suffices to exclude the candidate resources of the first resource conflict used for transmission by the first terminal. This avoids over-exclusion. If the second terminal is shared with other terminals, the resource exclusion condition includes a second condition. To avoid the first COT being interrupted. The requirement information of whether the second terminal is shared may be based on base station scheduling or instructions, or sharing request information sent by other terminals, or resource reservation information of other terminals, or implementation of the first terminal, or (pre)configuration. Sure. For example, if other terminals send sharing request information to request sharing of the first COT, it is considered that the second resource may be shared, or if the resource reservation information sent by other terminals is within the first COT, it is considered that the second resource is shared.

4. (Pre-)configured information;

If the first COT is initialized by the first terminal through LBT, the resource exclusion condition needs to include the second condition because the first terminal has the authority to share the second resource. If the first COT is not initialized by the first terminal through the LBT, the resource exclusion condition may include the first condition. Because the first terminal does not have the permission to share the second resource.

If other terminals share the COT with the first terminal, the resource exclusion condition includes the first condition. Since the first terminal does not initialize the first COT, the first terminal does not have the authority to share the second resource. If no other terminal shares the COT with the first terminal, the resource exclusion condition may include a second condition. Since the first terminal will initialize the first COT, the first terminal has the authority to share the second resource. Whether the first terminal is the terminal of the initial first COT, or whether other terminals will share the COT with the first terminal, can be based on the implementation of the first terminal, the instruction information of the base station, the COT sharing information or authorization information of other terminals, and other terminals. Determine at least one of the reservation information and whether the first terminal has sent a sharing request.

It should be noted that the above options 1-5 can be used alone or in combination, and are not limited in this application. In addition, the correspondence between the comparison results described in Options 1-5 and whether the first condition or the second condition is included is only an example, and other options are possible, which are not limited by this application.

In addition, the candidate resources may include at least one of the first resource or the second resource, the resource exclusion condition may include the first condition or the second condition, and the existence form of the candidate resource and the resource exclusion condition may be decoupled. In other words, the candidate resource may exist The first resource is included, and the resource exclusion condition includes the first condition or the second condition; or the candidate resource includes the first resource and the second resource, and the resource exclusion condition includes the first condition or the second condition. The following is an example with reference to Figures 6a to 6c and Figures 7a and 7b. The first resource is represented by resource 1, the second resource is represented by resource 2, and the basic time unit is taken as a time slot as an example. It can be understood that Figure 6a - Figure 6c and Figures 7a and 7b are only examples, and may also include other situations, for example, the candidate resources include the first resource and the second resource, the resource exclusion condition includes the first condition, etc., which are not limited by this application.

In Figure 6a-Figure 6b, the candidate resource occupies a basic time unit in the time domain, taking 1 time slot as an example for illustration, that is, the candidate resource granularity is single-slot granularity, and the candidate resource is determined with single-slot granularity, and This candidate resource is only used for the transmission of the first terminal (that is, the candidate resource only includes resource 1). It can be understood that in this case, the resource used by the first terminal for sharing by default refers to the first resource used for its own transmission. Other resources within the starting COT.

As shown in Figure 6a, the candidate resources may include resource 1, and the resource exclusion condition includes the first condition. As shown in Figure 6a, if resource exclusion is performed only based on whether resource 1 conflicts with reserved resources, resource 1 that overlaps with reserved resources will be excluded.

As shown in Figure 6b, the candidate resources may include resource 1, and the resource exclusion condition includes the second condition. If resource exclusion is performed based on whether resource 1 and/or resource 2 conflict with reserved resources, a COT is initialized from the candidate resource. The length of the first COT may be equal to the length of the COT initialized by the first terminal. There is any one in the COT. If the resource overlaps with the reserved resource, the candidate resource will be excluded.

In Figure 6c, the candidate resources in the candidate resource set include resource 1 and resource 2, and the resource exclusion condition includes the second condition. As shown in Figure 6c, the candidate resource occupies a basic time unit in the time domain. One time slot is used as an example for illustration. That is, the candidate resource granularity is single-slot granularity, and the candidate resource is determined with single-slot granularity, and the candidate resource The candidate resources in the set can be used for transmission by the first terminal and shared with other terminals. For example, the terminal selects two candidate resources with single-slot granularity. The two candidate resources with single-slot granularity include resources for itself. Transmitted resources (resource 1) and shared resources (resource 2). If there are candidate resources that conflict with reserved resources among the two single-slot granularity candidate resources, the two single-slot granularity candidate resources will be exclude.

In Figure 6d, the candidate resource occupies a basic time unit in the time domain. One time slot is used as an example for illustration. That is, the candidate resource granularity is single-slot granularity, and the candidate resource is determined with single-slot granularity, and the candidate resource set The candidate resources in the resource exclusion phase are not limited to resources used for the first terminal's own transmission or for sharing. If the candidate resources in the candidate resource set conflict with the reserved resources, the candidate resources will be excluded and the candidate resources will be included in the set. The remaining candidate resources are called the selected single-slot candidate resources, which are reported to the higher layer. The higher layer determines that one/some of the selected single-slot candidate resources will be used for the first terminal’s own transmission, and the other one will be used for the first terminal’s own transmission. /some for sharing. In other words, in Figure 6d, for the candidate resources in the candidate resource set, there is no limit on whether they are used for transmission by the first terminal or for sharing. It is only that the upper layer finally determines which resources are used for its own transmission and which are used for sharing.

It can be understood that when the candidate resource includes the first resource and the second resource, the granularity of the candidate resource may be COT granularity, that is, one candidate resource occupies the length of one COT in the time domain. If the COT of the candidate resource is different from the reserved resource Conflict means that the entire COT is eliminated. Figures 7a-7b are schematic diagrams of conflicts with reserved resources under different COT arrangements illustrated in this application. As shown in Figure 7a-Figure 7b, the granularity of candidate resources is COT, and resource exclusion is performed at the granularity of COT.

For example, as shown in Figure 7a, the COTs of multiple candidate resources do not overlap with each other. This non-overlap refers to non-overlapping in the time domain (no restriction in the frequency domain), or non-overlapping in the frequency domain (no restriction in the time domain), or non-overlapping in the time-frequency domain. The domains do not overlap. For example, any set of X contiguous slots correspond to one candidate resource (COT). For example, any set of T contiguous sub-channel corresponds to one candidate resource. This description is also applicable to other embodiments, such as Figure 7b. Exclude COTs of candidate resources that overlap with reserved resources among the COTs of multiple candidate resources. As shown in Figure 7a, if the COT of candidate resource c conflicts with the reserved resource, then the COT of candidate resource c is excluded.

As another example, as shown in Figure 7b, partial overlap is allowed between COTs of multiple candidate resources. The position difference between the two candidate resources in the time domain and/or the position difference in the frequency domain can refer to the previous embodiment. Description will not be repeated here. Exclude COTs of candidate resources that overlap with reserved resources.

It can be understood that the relevant descriptions of steps 101-103 are also applicable to various embodiments shown below.

In the embodiment of the present application, when excluding resources, different conditions are selected for resource exclusion in different situations, and it is determined that only the first resource reserved for its own transmission avoids the reserved resources of other terminals, or the first resource of the first terminal is One COT avoids the reserved resources of other terminal equipment, adapts to the needs of different situations, and selectively ensures the continuity of the COT of the first terminal, which can effectively improve system efficiency and avoid excessive exclusion and exclusion when there is no sharing requirement. Waste of resources.

Please refer to FIG. 8 , which is a schematic flowchart of another resource exclusion method provided by an embodiment of the present application. Figures 2a to 2b can be system architecture diagrams applicable to the resource exclusion method. As shown in Figure 8, the method may include: 201-203, where the execution order of each step is not limited by the embodiment of the present application. As shown in the figure, the resource exclusion method in this embodiment of the present application includes but is not limited to the following steps:

201. The first terminal determines a candidate resource set.

The candidate resource set may include multiple candidate resources, and the candidate resources may include a first resource used by the first terminal for transmission, and/or a second resource used by the first terminal for sharing (also called a third resource of the first terminal). Resources within a COT other than the first resource). In other words, the candidate resource includes the first resource, which means that the candidate resource can be used by the first terminal for transmission; the candidate resource includes the second resource, which means that the candidate resource can be used for sharing with other terminals for transmission, or potentially for sharing with other terminals. The terminal performs transmission (that is, it may be shared in the end, or it may not be shared, without restrictions).

202. The first terminal determines reserved resources of the second terminal. The reserved resources include at least one of third resources or fourth resources. The third resources are used in the second COT of the second terminal. The resources transmitted by the second terminal, the fourth resources include resources in the second COT except the third resources or resources used for sharing in the second COT.

In some embodiments, the third resource may be a resource used by the second terminal for transmission in the second COT of the second terminal, and the fourth resource may include resources in the second COT other than the third resource or resources in the second COT. Resources used for sharing or resources in the second COT that are potentially shared with other terminals for transmission (that is, they may eventually be shared, or they may not be shared, without restrictions). The resources used for sharing in the second COT may include some or all resources in the second COT except the third resources, which is not limited in this application. Regarding the resources in the second COT other than the third resource, there can be various understandings. For details, reference can be made to the description of the foregoing embodiments, which will not be described again here.

It can be understood that the third resource and the fourth resource in the embodiment of the present application may be specifically presented in the form of 2 (or more) resources, or 2 (or more) groups of resources, or 2 (or more) Resource collection, there is no limit here. If the third resource includes multiple resources, each of the Resources may be continuous or non-continuous, which is not limited in this application. Similarly, if the fourth resource includes multiple resources, each resource may also be continuous or non-continuous.

In some embodiments, the third resource and the fourth resource may be determined by the first terminal based on the resource indication information sent by the second terminal. Regarding the bearing of the resource indication information, reference may be made to the description of the foregoing embodiments, which will not be described again here. The resource indication information may also have other names, which is not limited in this application. In some implementations, the indication information indicating the third resource may be called resource indication information, and the indication information indicating the information of the second COT may be other indication information.

In one possible implementation, the resource indication information may be used to indicate at least one of the following:

Resources used for the second terminal’s own transmission;

Resources within the second COT (potentially) shared with other terminals;

The resources of the second COT;

The time domain starting position of the second COT;

The time domain end position of the second COT;

The time domain length of the second COT;

Structural information of the second COT, where the structural information of the second COT may include the terminal identification or service-related identification (UE ID, Source ID and/or destination ID) occupying the second COT; time domain and/or frequency domain resources Allocation (may be separate resource allocation for each terminal or each service, or bitmap, or pattern, etc.). In some implementations, the structure information of the COT may also be called COT sharing indication information, COT indication information, COT sharing information, and so on.

For example, the resources in the second COT other than the third resource transmitted by the second terminal, or the resources used for sharing by the second COT may be located in the same frequency domain position as the third resource used by the second terminal for its own transmission, or Different frequency domain locations; if located at the same frequency domain location, the frequency domain resource only needs to be indicated once and does not need to be indicated repeatedly. The same frequency domain location means using the same frequency domain resources.

It can be understood that the third resource may include multiple resources, and the multiple resources may be continuous or non-continuous, which is not limited in this application. Similarly, the fourth resource may also include multiple resources, and the multiple resources may be continuous or non-continuous.

After the first terminal determines the third resource and the fourth resource, the first terminal may further determine reserved resources for the second terminal, where the reserved resources may include at least one of the third resource or the fourth resource.

As shown in Figure 9a, taking the second terminal as UE2, the third resource as resource 3, the fourth resource as resource 4, and the second COT as COT2 as an example, resource 3 and resource 4 indicated by UE2 fall in the selection window. When determining the reserved resources of UE2, at least one of resource 3 or resource 4 may be used as a reserved resource, thereby performing a resource exclusion process based on the reserved resources. In some embodiments, as shown in Figure 9b, if resource 3 is excluded as a reserved resource, the terminal UE1 that excludes the resource may occupy the resources in resource 4. For example, the priority of UE1's transmission service is relatively high. The resources in resource 4 will be occupied. Taking the resources shared by UE2 to UE3 in Figure 9b as an example, since UE3 has not transmitted, the gap between UE4's transmission and UE2's transmission is too large, which will cause UE3's COT2 to be interrupted. However, if the entire COT2 (i.e., resource 3 and resource 4) is reserved as a resource, excessive exclusion may occur in some cases. Therefore, in this embodiment of the present application, whether the reserved resources include the fourth resource may be determined based on at least one of the following:

A. The comparison result between the priority of the first terminal and the first priority threshold;

In a possible implementation manner, if the first terminal's priority is greater than or equal to the first priority threshold, the reserved resources do not include the fourth resource. Correspondingly, the first terminal may occupy the fourth resource. Since the service priority of the first terminal is relatively high, the second terminal will avoid the first terminal during transmission. The first terminal may also occupy the fourth resource. In this case, the first terminal may occupy the fourth resource. The situation is allowed to affect the second COT of the second terminal. If the service priority of the first terminal is less than the first priority threshold, the reserved resources include fourth resources. Correspondingly, the first terminal will not occupy the fourth resource, thereby not affecting the continuity of the second COT of the second terminal.

In another possible implementation, if the priority of the first terminal is greater than or equal to the first priority threshold, it is considered that the first terminal cannot be interrupted by other terminals, and therefore, the reserved resources include fourth resources. Correspondingly, if the service priority of the first terminal is less than the first priority threshold, the reserved resources do not include reserved resources.

B. The comparison result between the priority of the first terminal and the priority of the second terminal;

Among them, the priority of the terminal can be at least one of service priority, physical layer priority, resource priority (resource granularity is not limited; resources may refer to time domain and/or frequency domain resources), terminal priority, and CAPC. .

Specifically optionally, if the priority of the first terminal is higher than the priority of the second terminal, the reserved resources may not include the fourth resource. corresponding Yes, the first terminal may occupy the fourth resource. Since the priority of the first terminal is relatively high, the second terminal will avoid the first terminal during transmission. The first terminal can also occupy the fourth resource. In this case A second COT that affects the second terminal is allowed. If the priority of the first terminal is lower than the service priority of the second terminal, the reserved resources include fourth resources. Correspondingly, the first terminal will not occupy the fourth resource, thereby not affecting the continuity of the second COT of the second terminal. This method can ensure that when the priority of the second terminal is relatively high, the second COT of the second terminal is not affected.

C. The comparison result between the resource priority in the first COT of the first terminal and the resource priority in the second COT of the second terminal. The first COT includes the first candidate resource;

Among them, the resources in the COT can refer to all the resources in the COT or any one or more resources. For example, it may be the first resource in the COT used for the first terminal's transmission, or the resource used in the COT for sharing, or other resources in the COT other than the resources used for the terminal's own transmission. Optionally, the resource priority may also refer to the priority of the COT. The resource priority within the COT can be understood as the priority of the resources used for the terminal's own transmission in the COT, or the priority of the resources used for sharing in the COT, or the resource priority of the COT, or the highest or lowest resource priority within the COT. class. The resource priority may refer to at least one of service priority, physical layer priority, UE priority, and CAPC, or at least one of service priority, physical layer priority, UE priority, and CAPC. kind of sure.

Specifically optionally, the resource priority in the first COT may be equal to the initial CAPC of the first COT, or the service priority of transmission in the first COT, or the highest or lowest among all transmissions in the first COT. CAPC, or highest or lowest business priority. The resource priority in the second COT may be equal to the initial CAPC of the second COT, or the service priority of the transmission in the second COT, or the highest or lowest CAPC among all transmissions in the second COT, or the highest or The lowest business priority.

Specifically and optionally, if the resource priority in the first COT is higher than the resource priority in the second COT, the reserved resources may not include the fourth resource. Correspondingly, the first terminal may occupy the fourth resource. Since the service priority of the first terminal is relatively high, the second terminal will avoid the first terminal during transmission. The first terminal may also occupy the fourth resource. In this case, the first terminal may occupy the fourth resource. The situation is allowed to affect the second COT of the second terminal. If the resource priority in the first COT is smaller than the resource priority in the second COT, the reserved resources include the fourth resource. Correspondingly, the first terminal will not occupy the fourth resource, thereby not affecting the continuity of the second COT of the second terminal. This method can ensure that when the service priority of the second terminal is relatively high, the second COT of the second terminal will not be affected.

D. Comparison result between the service priority of the first terminal and the service priority carried by the fourth resource;

The priority of the service carried by the fourth resource can be understood as the priority of the service transmitted by the fourth resource, or the priority of the highest priority service or the priority of the lowest priority service transmitted by the fourth resource. The service priority of the first terminal can be understood as the priority of the highest priority service or the priority of the lowest priority service transmitted by the first terminal.

Specifically optionally, if the service priority of the first terminal is higher than the service priority carried by the fourth resource, the reserved resources may not include the fourth resource. Correspondingly, the first terminal may occupy the fourth resource. Since the service priority of the first terminal is relatively high, the services carried on the fourth resource will avoid the first terminal. The first terminal may also occupy the fourth resource. In this case, the second COT affecting the second terminal is allowed. If the service priority of the first terminal is less than the service priority carried by the fourth resource, the reserved resources include the fourth resource. Correspondingly, the first terminal will not occupy the fourth resource, thereby not affecting the continuity of the second COT of the second terminal. This method can ensure that when the service priority carried by the fourth resource is relatively high, the second COT of the second terminal is not affected.

Specifically optionally, if there is a transceiver relationship between the first terminal and the second terminal, the reserved resources may not include the fourth resource. Correspondingly, the first terminal may occupy the fourth resource, but since the first terminal and the second terminal meet the COT sharing conditions (that is, have a transceiver relationship), the second COT of the second terminal will not be interrupted. If there is no transceiver relationship between the first terminal and the second terminal, the reserved resources may include fourth resources. Correspondingly, the first terminal will not occupy the fourth resource, thereby not affecting the continuity of the second COT of the second terminal.

F. The remaining packet delay budget of the first terminal remains PDB;

Specifically and optionally, if the remaining PDB of the first terminal is less than the threshold, the reserved resources may not include the fourth resource. If the remaining PDB of the first terminal is less than the threshold, it is considered that the first terminal's service is urgent, that is, the first terminal can occupy the fourth resource so that the first terminal's emergency service can be sent out in time.

G. The comparison result between the identification of the first terminal and the Source ID and/or destination ID and the identification of the second terminal and the Source ID and/or destination ID;

Specifically, it may be the Source ID and/or destination ID of the service of the first terminal and the Source ID and/or destination ID of the service transmitted by the second terminal. If the identification pair Source ID and/or destination ID of the first terminal and the identification pair Source ID and/or destination ID of the second terminal are the same, the reserved resources may not include the fourth resource. If the identification pair Source ID and/or destination ID of the first terminal and the identification pair Source ID and/or destination ID of the second terminal are the same, the first terminal and the second terminal have a transceiver relationship. Therefore, if the identification pair of the first terminal The Source ID and/or destination ID and the identity of the second terminal are different for the Source ID and/or destination ID, Then the reserved resources may include fourth resources.

H. Channel congestion level information;

The congestion level information of the channel can be specifically channel busy ratio (CBR) or channel occupancy ratio (CR), and the comparison result with the threshold. It can refer to the CBR or CR of a specific priority, or the sum of CBR or CR of services of various priority levels. If the channel is relatively congested, that is, the CBR or CR is greater than (or equal to) the threshold, or the sum of CBR or CR is greater than (or equal to) the threshold, the reserved resources do not include the fourth resource. If the channel is relatively idle, that is, the CBR or CR is less than (or equal to) the threshold, or the sum of CBR or CR is less than (or equal to) the threshold, the reserved resources may include the fourth resource.

I. (Pre-)configured information;

Specifically, optionally, whether the reserved resources include the fourth resource may be configured through (pre)configuration information. (Pre)configuration includes predefinition, RRC semi-static configuration, SCI or DCI or other dynamic signaling indications, etc. For details, please refer to the description of the foregoing embodiments, which will not be described again here.

J. Instruction information of the second terminal, the instruction information is used to instruct the release of the fourth resource;

Specifically and optionally, the second terminal may indicate whether to release (or use) the fourth resource through the SCI. If the fourth resource is instructed to be released, the reserved resources do not include the fourth resource.

K. COT sharing indication information associated with the second COT. The COT sharing indication information is used to instruct sharing of resources in the second COT with the first terminal.

Specifically optionally, if the first terminal receives an instruction to share the resources in the second COT with the first terminal, it is considered that the first terminal and the second terminal have a transceiver relationship, and the reserved resources do not include the fourth resource, and the first terminal The fourth resource can be occupied.

Specifically optionally, if the second COT is LBTed by the second terminal and initialized when the LBT is successful, then the second terminal has the authority to share the fourth resource, and the reserved resources include the fourth resource. If the second COT is not initialized by the second terminal, the second terminal does not have the authority to share the fourth resource, and the reserved resources do not include the fourth resource.

If other terminals share the COT with the second terminal, it can be understood that the second terminal will not initialize the second COT, so the reserved resources do not include the fourth resources. If no other terminal shares the COT with the second terminal, it can be understood that the second terminal will initialize the second COT, and the second terminal has the authority to share the fourth resource. Correspondingly, the reserved resources include the fourth resource.

In addition, the correspondence between the comparison results described in options A-L and whether the fourth resource is included is only an example, and other options are possible, which are not limited by this application.

It can be understood that the second terminal can reserve multiple resources. If the multiple reserved resources are within a COT starting from the first resource, they will be processed as one COT. If there are reserved resources outside the COT starting from the first resource, they will be processed as multiple COTs. That is, another COT should also be initialized at the reserved resource outside the COT. Optionally, according to the reserved resource transmission, at least one of the following parameters of the initial multiple COTs is the same: CAPC, COT length, CPE, LBT type, service priority, and physical layer priority.

203. The first terminal excludes the first candidate resource from the candidate resource set. The first candidate resource and the reserved resource satisfy a resource exclusion condition. The resource exclusion condition includes the first candidate resource and the reserved resource. Reserved resource conflict.

In one embodiment, the first terminal excludes all first candidate resources that meet resource exclusion conditions from the candidate resource set, where the resource exclusion conditions may include conflicts between the first candidate resources and reserved resources. It is understandable that the resource exclusion conditions In addition to this condition, other conditions may also be included. For example, the RSRP of the channel where the resource indication information associated with the reserved resource is located is greater than the threshold. For convenience of description, this application defaults that the candidate resources satisfy other conditions in the resource exclusion conditions.

It should be noted that the above conflict may be overlapping of time domain resources and/or overlapping of frequency domain resources. In some implementations, candidate resources that overlap in time domain with reserved resources may be preferentially excluded. In other words, candidate resources that do not overlap in time domain with reserved resources may be preferentially selected.

In the embodiment of the present application, the first terminal that performs resource selection determines whether the reserved resources include the fourth resource according to at least one of the conditions. In this way, the first terminal can selectively exclude resources and select resources when further performing resource selection. Avoiding the shared fourth resource, under different circumstances can ensure the continuity of the second COT of the second terminal or ensure the normal operation of the high-priority service preemption mechanism, which can effectively improve system efficiency and achieve a trade-off between the two. .

It should be noted that the embodiments of the resource exclusion methods in Figure 3 and Figure 8 can be implemented independently, or can be implemented in combination based on certain internal connections. For example, step 102 and related descriptions in Figure 3 can be implemented by the embodiment in Figure 8 Step 202 and related descriptions are replaced. For another example, step 201 and related descriptions in Figure 8 can be replaced by step 101 and related descriptions in the embodiment of Figure 3. For another example, step 202 and related descriptions in Figure 8 can be replaced by Figure 3. Step 102 and related description substitutions in the embodiment are not limited by this application. In other words, each step in the embodiment of Figure 3 and each step in Figure 8 can be combined and implemented according to certain internal relationships.

Please refer to FIG. 10 , which is a schematic flowchart of another resource exclusion method provided by an embodiment of the present application. FIGS. 2 a to 2 b can be system architecture diagrams applicable to the resource exclusion method. As shown in Figure 10, the method may include: 301-306, where the execution order of each step is not limited by the embodiment of this application. It should be noted that in the flowchart shown in FIG. 10 , the first terminal is a terminal that performs COT sharing, the second terminal is a terminal that shares the COT of the first terminal, and the third terminal may be a terminal that performs resource exclusion. In some implementations, the second terminal and the third terminal may be the same terminal. As shown in the figure, the resource exclusion method in this embodiment of the present application includes but is not limited to the following steps:

301. The first terminal determines the first resource used for transmission by the first terminal and initializes the first COT.

The first terminal may initialize the first COT with the first resource. For example, the first terminal performs LBT, and if the LBT is successful, initializes the first COT, and the first terminal can share resources in the first COT except the first resource. The resources used for sharing may be all or part of the resources in the first COT except the first resource.

302. The first terminal sends COT sharing indication information to the second terminal.

303. The first terminal sends COT sharing indication information to the third terminal.

It can be understood that the two steps 302 and 303 can be combined, for example, the first terminal sends the COT sharing indication information through multicast or broadcast. The first terminal may also send the COT sharing indication information to the second terminal and the third terminal in a unicast manner.

The first terminal needs to have authorization information when performing COT sharing. For example, the authorization information can be called COT sharing instruction information. It is understandable that the authorization information can also be called COT instruction information, COT structure information, COT sharing information, and COT authorization. Information etc. In some possible implementations, there may not be a unified field to carry this information, but may include multiple information (fields), and the effect of instructing to share the resources in the COT with other terminals is achieved through the indication of multiple information. . The multiple information (fields) can be carried in different locations. For example, CPE, LBT type, etc. are carried in the first level SCI, and resource indication information, UE identification (or Source ID and/or destination ID) and other information are carried in the second level. Grade SCI, etc., this application is not limited. For convenience of description, this application uses COT sharing indication information as an example.

The COT sharing indication information is generally sent by the base station or the terminal that initiates the COT. In the embodiment of the present application, the first terminal sends the COT sharing indication information. The COT sharing indication information should at least include resource information used for sharing in the first COT, and/or which terminal device or devices are shared to. For the convenience of description, this application divides the sharing methods into two types according to whether the first terminal specifies the shared terminal when performing COT sharing:

Method 1: The COT sharing indication information indicates the shared resources, but does not indicate the shared terminal.

Method 2: The COT sharing indication information indicates shared resources and shared terminals.

Exemplarily, the COT sharing indication information needs to contain at least one of the following information or fields: the identity of the terminal to be shared or the identity of the service (source ID and/or destination ID), time domain resource allocation, frequency domain resource allocation, LBT type, CPE, CAPC. It can be understood that if the sharing mode is Mode 2, the COT sharing indication information needs to include the identity of the terminal or the identity of the service (source ID and/or destination ID) shared to.

In some implementations, the first terminal may determine whether to share or to which terminals to share according to at least one of the following:

Based on the resource reservation information of other terminals, that is, the first terminal can determine whether to share or to which terminals to share based on the resource reservation of other terminals;

Base station-based scheduling or indication information or authorization information. For example, scheduling information and authorization information can be carried in DCI and/or RRC; indication information can be COT structure indication information, carried in DCI format 2_0.

Based on requests from other terminals, for example, the first terminal performs COT sharing based on the COT sharing requests sent by other terminals, or determines which terminals to share with, and the other terminals can directly send requests to the first terminal through the sidelink sidelink, including The first terminal unicasts, multicasts or broadcasts, or other terminals send requests to the base station and then the base station delivers the request to the first terminal.

In some implementations, the first terminal may not specify which terminals or services to share the information with, and other terminals may occupy the information based on conditions. For example, the first terminal indicates at least one of the following information or fields: time domain resource allocation, frequency domain resource allocation, LBT type, CPE, CAPC.

For example, the timing for the first terminal to determine to share the first COT may be determined by at least one of the following: sharing based on base station scheduling, such as determining to share the first COT when receiving scheduling signaling; For reservation or requested sharing, the first COT may be determined to be shared when receiving information about resources reserved by other terminals, or the first COT may be determined to be shared when the first terminal transmits.

In some implementations, the first terminal may determine whether to share with the other terminal based on at least one of the following information of the other terminal:

1. Instruction information sent by the base station, or scheduling information, or COT structure information, or authorization information;

2. The resource reservation information of the other terminal. For example, it is determined whether to share the resources with the other terminal based on whether the resources reserved by the other terminal are located in the first COT, or whether the reserved resources of other terminals are the same as those in the first COT. Resources partially or completely overlap;

3. Sharing request information of other terminals. The sharing request can be sent directly to the first terminal, or sent to the first terminal through broadcast, or sent to the base station and instructed by the base station to the first terminal;

4. Source ID/destination ID of other terminals, for example, determine whether it matches the Source ID and/or destination ID of a certain service of the first terminal;

5. Whether other terminals have a sending and receiving relationship with the first terminal;

6. Whether the service priority, physical layer priority, or CAPC of other terminals is higher than the corresponding priority of the first terminal or higher than the threshold;

7. Whether the remaining PDB of other terminals is less than a certain threshold;

8. Whether the zone ID of other terminals is the same as the zone ID of the first terminal.

The following describes in detail the time-frequency domain resource allocation for COT sharing in the COT sharing indication information in the mode 1 and mode 2 scenarios. The specific implementation method is illustrated with examples:

1. Time domain resource allocation:

If COT sharing is performed according to method 1, you can indicate time domain resources according to bitmap, or through time domain resource indication value (TRIV), or starting point + length/quantity, or indicate time domain resource allocation pattern. Optionally, one or more patterns are (pre)configured, and the SCI indicates one or more patterns to indicate time domain resource allocation.

If COT sharing is performed according to method 2, in one implementation, the first terminal can indicate multiple IDs, and the IDs can identify a certain terminal or a specific service. For example, ID may refer to UE ID, or Source ID and/or destination ID (source ID/destination ID).

Each ID corresponds to a time slot, and the arrangement order of each ID is the arrangement order in the time domain corresponding to each ID. For example, multiple IDs can be 1, 2, 3, and 4 respectively. If an ID occupies multiple time slots continuously, the ID will appear repeatedly. For example, if the ID 1 occupies two time slots, then the multiple The IDs are arranged as 1, 1, 2, 3, 4.

In another implementation, the first terminal can indicate each ID and the number of occupied time slots. For example, it can indicate ID1 + number of time slots, ID2 + number of time slots, and continue to occupy two time slots with ID 1 in the above embodiment. Others occupy one time slot as an example, it can indicate that the ID is 1+2 time slots, the ID is 2+1 time slots, the ID is 3+1 time slots, and the ID is 4+ and it occupies 1 time slot. It can be understood that the time domain resource allocation is described above using time slots as an example, and time slots can also be replaced with other time unit granularities.

In another implementation, the first terminal can indicate each ID and the corresponding time domain resource allocation. For example, it can indicate the ID + the time domain resource allocation (bitmap) of each ID, or through TRIV, or the starting point + length/quantity indication resource, Or time domain resource allocation pattern).

2. Frequency domain resource allocation:

If COT sharing is performed according to method 1, you can indicate frequency domain resources according to bitmap, or through frequency domain resource indication value (FRIV), or starting point + length/quantity, or frequency domain resource allocation pattern. Optionally, one or more patterns are (pre)configured, and the SCI indicates one or more of the patterns to indicate frequency domain resource allocation.

If COT sharing is performed according to method 2, in one implementation, the first terminal can indicate multiple IDs, each ID corresponds to 1 RB (or interlace), and the order of arrangement of each ID is the arrangement in the frequency domain corresponding to each ID. order. For example, multiple IDs can be 1, 2, 3, and 4 respectively. If an ID occupies multiple RBs (or interlace) continuously, the ID will appear repeatedly. For example, the ID 1 occupies two RBs (or interlace). ), then the multiple IDs are arranged as 1, 1, 2, 3, and 4.

In another implementation, the first terminal may indicate each ID and the number of occupied RBs (or interlaces). For example, it may indicate ID1+number of RBs or number of interlaces or number of subchannels, ID2+number of RBs or number of interlaces or subchannels. number.

In another implementation, the first terminal can indicate each ID and the corresponding frequency domain resource allocation. For example, it can indicate the ID + the frequency domain resource allocation (bitmap) of each ID, or indicate the resource through FRIV, or the starting point + length/quantity, Or frequency domain resource allocation pattern).

The above describes the indication method for time domain resource allocation and frequency domain resource allocation in the COT sharing indication information. The following describes the carrying method of the COT sharing indication information.

The payload size of the COT sharing indication information may be related to the channel bandwidth, COT length, SCS, number of shared terminals, number of shared services, number of shared resources, resource allocation method, etc., and therefore may not be fixed. This will lead to blind detection and increased complexity for terminals receiving COT sharing indication information. Therefore, this application can use the following method A or method B to indicate the number of bits and/or payload and/or location information (i.e. domain and/or frequency domain resource information) of the COT sharing indication information:

Method A: For COT sharing indication information carried in the first-level SCI, second-level SCI or MAC-CE, determine whether the first-level SCI, second-level SCI or MAC-CE contains the COT sharing indication according to the (pre) configuration information, and/or, the number of bits occupied by the COT sharing indication information.

Method B: For COT sharing indication information carried in the second-level SCI or MAC-CE, the first terminal can indicate the second-level SCI format in the first-level SCI (the second-level SCI format can be used to indicate the second-level SCI format). Whether the SCI contains COT sharing indication information), and/or, The first terminal may indicate in the first-level SCI whether the MAC-CE contains COT sharing indication information, and/or the number of bits occupied by the COT sharing indication information.

Specifically optionally, in the above method A and method B, the number of bits occupied by the COT sharing indication information can be (pre) configured or indicated; alternatively, the channel bandwidth, COT length, SCS, and number of shared UEs can be (pre) configured or indicated. , at least one of the number of shared services, the number of shared resources, the resource allocation method, and the number of COT sharing indication information. The terminal that receives the COT sharing indication information implicitly determines the payload/number of bits occupied by the COT sharing indication information based on at least one item of the above information.

This embodiment considers that when the number of bits of the COT sharing indication information is uncertain, blind detection of the terminal receiving the COT sharing indication information is avoided through a preconfiguration or indication method.

It can be understood that if the first terminal needs to share multiple resources, or share them with multiple terminals, or share them with multiple services, it can be indicated in one COT sharing indication information, or it can be indicated separately using multiple COT sharing indication information. There are no restrictions here.

Correspondingly, the terminal that receives the COT sharing indication information (such as the second terminal and/or the third terminal) can determine the first-level side link control information SCI, the second-level SCI or the media access control-control element MAC-CE. Whether to include COT sharing indication information, and/or, determine the number of bits occupied by the COT sharing indication information, and then determine the resource where the COT sharing indication information is located or the way to receive the COT sharing indication information, so as to receive the COT sharing indication information on the corresponding resource .

304. The third terminal receives the COT sharing indication information, and when performing resource exclusion, determines whether the reserved resources include the second resource indicated by the COT sharing indication information.

In one implementation manner, when reserving resources, the first terminal can reserve the first resource for its own use, and the second resource shared with other terminals is indicated in the COT sharing indication information.

When excluding resources, the third terminal may determine whether the reserved resources include the second resource according to at least one of the following (it should be noted that the method of determining whether the reserved resources include the second resource may refer to the embodiment of FIG. 8 Whether the reserved resources include the relevant description of the fourth resource, I will not go into details here):

The RSRP of the channel where the COT sharing indication information is located is greater than the threshold;

The remaining PDB of the third terminal;

The congestion level of the channel;

Whether the Source ID and/or destination ID (source ID/destination ID) match;

The relationship between the priority of the third terminal and the priority threshold;

The relationship between the priority of the first terminal and the priority of the third terminal.

After the third terminal determines the reserved resources, the candidate resources in the candidate resource set that meet the resource exclusion conditions with the reserved resources can be excluded. The resource exclusion conditions include conflicts between the candidate resources and the reserved resources. Optionally, the resource The exclusion conditions include that conflicts between the second resource indicated by the COT sharing indication information and the candidate resource need to be excluded.

In another implementation manner, when reserving resources, the first terminal can also reserve the first resources used by itself, as well as the remaining second resources in the first COT or the second resources for sharing. The first terminal may instruct the release of the second resource through the first-level SCI or second-level SCI or MAC CE or COT sharing indication information during actual transmission. For example, 1 bit indicates whether to release the second resource. This facilitates other terminals not to include the second resource when determining reserved resources, and not to exclude the second resource. This approach provides the flexibility of reserving first and releasing later.

305. The second terminal uses the resources shared in the first COT for transmission according to the COT sharing instruction information. That is, the second type of terminal does not use the originally reserved resources for transmission.

306. The second terminal sends instruction information to instruct the release of the original reserved resources.

The indication information can be carried in the first-level SCI or the second-level SCI or MAC-CE.

307. When excluding resources according to the instruction information, the third terminal does not exclude the resources originally reserved by the second terminal.

In this embodiment of the present application, the second terminal may be any terminal that shares the first COT of the first terminal.

In one implementation manner, the COT sharing indication information does not indicate mode 1 of the shared terminal, but indicates the shared second resource. The second terminal may determine whether it can use the COT resources shared by the first terminal based on at least one of the following (at least one of the following may be referred to as a COT sharing condition):

1. Instruction information sent by the base station, or scheduling information, or authorization information, or COT structure information;

2. The resource reservation information of the second terminal. For example, it is determined whether to share the first COT of the first terminal based on whether the reserved resources of the second terminal are located in the first COT, or whether the reserved resources of the second terminal are Partially or completely overlaps with the resources in the first COT;

3. Sharing request information of the second terminal. The sharing request can be sent directly to the first terminal, or sent to the first terminal through broadcast, or sent to the base station and instructed by the base station to the first terminal;

4. Determine whether the source ID/destination ID of the second terminal matches the Source ID and/or destination ID of a certain service of the first terminal;

5. Whether the second terminal has a sending and receiving relationship with the first terminal;

6. Whether the service priority, physical layer priority, or CAPC of the second terminal is higher than the priority of the first terminal or higher than the threshold;

7. Whether the remaining PDB of the second terminal is less than a certain threshold;

8. Whether the zone ID of the second terminal is the same as the zone ID of the first terminal;

9. The priority of the second terminal is higher than the threshold. This priority can refer to CAPC, or business priority, or physical layer priority;

10. The resources originally reserved for the second terminal are terminals within the first COT.

In one implementation, for Mode 1 in which the COT sharing indication information does not indicate a shared terminal, the following methods may exist depending on whether the second terminal reserves resources:

Method 1-1: The second terminal has reserved resources and the reserved resources are within the first COT, and the second terminal meets the COT sharing conditions, then the second terminal can use the reserved resources.

Method 1-2: The second terminal has reserved resources, and the second terminal meets the COT sharing conditions, then the second terminal can adjust the reserved resources to use the second resources for sharing in the first COT. It can be understood that the reservation The remaining resources can be fired inside the first COT and outside the first COT.

Method 1-3: The second terminal does not reserve resources, and the second terminal meets the COT sharing conditions, then the second terminal can use the second resource for sharing in the first COT.

In one implementation, for Mode 2 in which the COT sharing indication information indicates resources for sharing and the corresponding shared terminal, and the shared terminal includes a second terminal, the following may exist depending on whether the second terminal reserves resources. ways:

Method 2-1: The second terminal has reserved resources, but the COT sharing indication information indicates the resources shared with the second terminal in the first COT, then the second terminal gives up the reserved resources and uses the resources indicated by the COT sharing indication information. Shared resource transfer.

Method 2-2: The second terminal does not reserve resources, but the COT sharing indication information indicates the resources in the first COT shared with the second terminal, then the second terminal can transmit according to the shared resources indicated by the COT sharing indication information.

For the above methods 1-2 and 2-1, the second terminal has reserved resources, but because it uses the COT resources shared by the first terminal, it actively or passively adjusts the resources and does not transmit on the reserved resources. When other terminals perform resource exclusion, they will still exclude resources according to reserved resources, which will cause excessive exclusion. Therefore, if the second terminal performs resource adjustment, it will send instruction information instructing to give up the original reserved resources. For convenience of description, this application takes the third terminal as the terminal that performs resource exclusion. It can be understood that the terminals that perform resource exclusion may include multiple terminals, and the third terminal may be any one of them. When the third terminal performs resource exclusion, the originally reserved resources of the second terminal that have been adjusted due to COT sharing will no longer be excluded.

In some implementations, the second terminal may also send indication information to indicate whether to release the originally reserved resources when using shared resources for transmission. Optionally, the second terminal can indicate whether to release the original reserved resources through 1 bit in the SCI. For example, if release is indicated, it can be (pre)configured to release the next reserved resource closest to the SCI, or it can be (pre)configured to release the second terminal's reserved resources in the subsequent reserved resource period. , or may be (pre)configured to release the second terminal's subsequent reserved resource period reserved resources and periodic reserved resources. For example, 2 bits can also be used to indicate whether to release the reserved resources, and to release the next reserved resources closest to the SCI, and/or the reserved resources in the subsequent reserved resource period, and/or the subsequent period. Reserve resources.

In this way, reserved resources that are no longer used due to the use of resources shared by COT are released, and resources that are reserved but not used are not excluded, thereby avoiding the problem of excessive exclusion and resource waste.

It should be noted that the above-mentioned first terminal, second terminal and third terminal are all independent terminals. Each step is not dependent on each other and can be implemented independently.

Please refer to FIG. 11 , which is a schematic flowchart of another resource exclusion method provided by an embodiment of the present application. FIGS. 2a to 2b can be system architecture diagrams applicable to the resource exclusion method. As shown in Figure 11, the method may include: 401-402, where the execution order of each step is not limited by the embodiment of this application. As shown in Figure 11, the resource exclusion method in this embodiment of the present application includes but is not limited to the following steps:

401. The first terminal determines the reserved resources of the second terminal.

402. The first terminal excludes the first candidate resource from the candidate resource set. The first candidate resource and the reserved resource satisfy resource exclusion conditions. The resource exclusion condition includes that the reserved resource and the first candidate resource overlap in the time domain. Alternatively, the reserved resource overlaps with the time domain starting position of the first candidate resource. Optionally, the LBT type of the reserved resource and the first candidate resource is type 1 and/or type 2A/2B/2C. That is, all frequency domain resources in the time slot where the reserved resources are located are excluded.

When the candidate resources in the candidate resource set overlap with the reserved resources of the second terminal, LBT conflicts may occur. This is described below in conjunction with Figure 12a. As shown in Figure 12a, when the first candidate resource and the reserved resource overlap in the domain, but there is no overlap in the frequency domain, such as If resource exclusion is performed based on resource exclusion conditions with overlapping time-frequency domain storage, the first candidate resource will not be excluded. The second terminal performs LBT before reserving resources, and the first terminal performs LBT before the first candidate resource. If the second terminal succeeds in LBT, it will send CPE. When the first terminal performs LBT, since the second terminal sends CPE, Therefore, the LBT of the first terminal will fail, resulting in an LBT conflict.

In order to solve the above problem, the resource exclusion conditions of this application include overlap in the time domain between the reserved resource and the first candidate resource. If there is overlap in the time domain, it is considered that the first candidate resource conflicts with the reserved resource. As shown in Figure 12b, although the first candidate resource and the reserved resource do not overlap in the frequency domain, the first candidate resource and the reserved resource overlap in the time domain, that is, it is determined that the first candidate resource conflicts with the reserved resource. . It can be understood that overlap in this application can be understood as complete overlap or partial overlap, and may refer to time domain overlap and/or frequency domain overlap, which is not limited in this application. For the convenience of description, when this application performs resource exclusion, it is assumed that the first terminal meets other conditions in the resource exclusion conditions. For example, the RSRP of the PSSCH or PSCCH of the resource indication information associated with the reserved resources is greater than the threshold value, and the priority relationship between the reserved resources and the candidate resources is satisfied. For details, please refer to the description of the foregoing embodiments, which will not be described again here. In addition, when excluding resources, the first terminal may exclude multiple consecutive time slots, or may exclude candidate resources corresponding to the entire COT. The exclusion of time slots, multi-time slots, and COT can be understood as excluding all frequency domain resources on the time slot, multi-time slots, and COT, or excluding the existence of any frequency domain resources related to the time slot, multi-time slots, and COT. Overlapping candidate resources.

In some embodiments, when the first terminal meets a third condition, the resource exclusion condition also includes that the first candidate resource overlaps with the reserved resource in the frequency domain, and the third condition includes the first terminal and the reserved resource. At least one of the following parameters of the second terminal is the same: LBT type, channel priority CAPC, CPE, competition window value, counter maximum value, counter initial value N. It is understandable that the counter N is used for the LBT type 1 process, which affects The number of times channel detection is performed and the total duration of LBT. Wherein, when the first terminal meets the third condition, it can be considered that the LBT methods of the first terminal and the second terminal are basically the same, and resource exclusion can be performed in a time-frequency resource overlapping manner. As shown in Figure 12c, the LBT methods of the first terminal and the second terminal are basically the same and will not cause LBT conflict problems. Therefore, resource exclusion can be carried out in a time-frequency resource overlapping manner, that is, the resource exclusion conditions not only include the first candidate resource and Reserved resources overlap in the time domain, including overlap in the frequency domain. In other words, in this case, the first candidate resource and the reserved resource will be excluded only if they overlap in both the time domain and the frequency domain. Only the time domain Overlap is not excluded, and overlap may include partial overlap or complete overlap, which is not limited in this application. If the first terminal does not meet the third condition, the resource exclusion condition does not include overlap in the frequency domain between the first candidate resource and the reserved resource, that is, it is considered that there is overlap in the time domain (regardless of whether the frequency domain overlaps), and the first candidate resource Resources and reserved resources conflict.

By implementing this method, the LBT conflict problem in the frequency division multiplexing scenario of reserved resources and candidate resources can be effectively avoided.

Please refer to FIG. 13 , which is a schematic flowchart of another resource exclusion method provided by an embodiment of the present application. FIGS. 2 a to 2 b can be system architecture diagrams applicable to the resource exclusion method. As shown in Figure 13, the method may include: 501-502, where the execution order of each step is not limited by the embodiment of this application. As shown in Figure 13, the resource exclusion method in this embodiment of the present application includes but is not limited to the following steps:

501. The first terminal determines the reserved resources of the second terminal.

502. When the reserved resource overlaps with the first candidate resource in the candidate resource set in the time domain, the first terminal performs channel access according to the LBT parameter information of the second terminal.

In the embodiment of the present application, in order to solve the LBT conflict problem shown in Figure 12a, when the first terminal determines that the reserved resources and the first candidate resources overlap in the time domain, the first terminal can also determine according to the second terminal The LBT parameter of the second terminal is used to perform channel access, because the first terminal can determine the LBT position corresponding to the first candidate resource according to the LBT parameter of the second terminal, thereby avoiding LBT conflicts. The LBT parameter information of the second terminal may include at least one of the following: LBT type, CAPC, CPE, contention window value, and counter initial value N.

As shown in Figure 12a, if the first terminal LBTs when the second terminal sends the CPE, it will cause an LBT conflict. If the first terminal determines the location of the LBT based on the LBT parameter information of the second terminal before the second terminal sends the CPE. , the LBT conflict problem can be effectively avoided.

Please refer to FIG. 14 , which is a schematic flowchart of another resource exclusion method provided by an embodiment of the present application. FIGS. 2 a to 2 b can be system architecture diagrams applicable to the resource exclusion method. As shown in Figure 14, the method may include: 601-602, where the execution order of each step is not limited by the embodiment of this application. As shown in Figure 14, the resource exclusion method in this embodiment of the present application includes but is not limited to the following steps:

601. The first terminal determines the reserved resources of the second terminal.

602. The first terminal excludes the first candidate resource from the candidate resource set. The first candidate resource and the reserved resource satisfy resource exclusion conditions. The resource exclusion condition includes the time of the reserved resource. The domain end position is before the starting time domain position of the first candidate resource, and the time interval between the time domain end position of the reserved resource and the starting time domain position of the first candidate resource is less than or equal to the first interval.

The time domain end position of the reserved resource is before the starting time domain position of the first candidate resource, and the time interval between the time domain end position of the reserved resource and the starting time domain position of the first candidate resource is less than or Equal to the first interval, LBT conflict problems may also occur. The following is an example with reference to Figure 15. The reserved resource is before the first candidate resource, and the time interval between the end time domain position of the reserved resource and the starting time domain position of the first candidate resource is relatively small. Since the second terminal is in Data transmission is performed on reserved resources, resulting in insufficient time between the reserved resources and the first candidate resource for channel access, which may result in LBT failure.

In order to solve this problem, when the first terminal performs resource exclusion, if the first candidate resource and the reserved resource meet the resource exclusion condition, the resource exclusion condition includes that the time domain end position of the reserved resource is at the end of the first candidate resource. before the starting time domain position, and the time interval between the time domain end position of the reserved resource and the starting time domain position of the first candidate resource is less than or equal to the first interval, then the first candidate resource Resources are excluded to avoid LBT conflict issues.

In some implementations, the value of the first interval may be 0, or the value of the first interval may be determined according to at least one of the following: LBT type of the first terminal, CAPC, CPE, contention window value, counter initial value N, the priority of the second terminal, the priority of the first terminal, subcarrier spacing, etc. The priority of the terminal may include at least one of the following: terminal priority, service priority, physical layer priority, COT priority, resource priority, CAPC, etc.

In some embodiments, when the priority of the first terminal is higher than the third priority threshold or the priority of the second terminal, even if the above location condition is satisfied between the first candidate resource and the reserved resource, the first terminal The first candidate resource is not excluded; when the priority of the first terminal is less than or equal to the third priority threshold or the priority of the second terminal, if the location difference between the first candidate resource and the reserved resource is less than or equal to the above During the first interval, the first terminal excludes the first candidate resource. In other words, the resource exclusion condition also includes that the priority of the first terminal is less than or equal to the third priority threshold.

In some embodiments, when the first terminal meets the conditions for sharing the COT of the second terminal (for example: the first terminal and the second terminal have a transceiver relationship), or when the first terminal has a transceiver relationship with the terminal of the initial COT, even if The first candidate resource and the reserved resource satisfy the above position relationship, and the first terminal does not exclude the first candidate resource; otherwise, the first candidate resource is excluded. In other words, the resource exclusion condition also includes that the first terminal and the second terminal do not meet the COT sharing condition.

In some implementations, the first terminal may not start from the time slot boundary when transmitting, leaving LBT time for itself. For example, multiple AGC positions are introduced within a time slot.

Through the method of the embodiment of the present application, the LBT conflict problem caused by reserved resources before candidate resources can also be effectively solved.

Please refer to FIG. 16 , which is a schematic flowchart of another resource exclusion method provided by an embodiment of the present application. FIGS. 2a to 2b can be system architecture diagrams applicable to the resource exclusion method. As shown in Figure 16, the method may include: 701-702, where the execution order of each step is not limited by the embodiment of the present application. As shown in Figure 16, the resource exclusion method in this embodiment of the present application includes but is not limited to the following steps:

701. The second terminal determines that the time domain end position of the reserved resource of the second terminal is before the starting time domain position of the first candidate resource of the first terminal, and the time domain end position of the reserved resource is the same as the first candidate resource. The time interval between the starting time domain positions of a candidate resource is less than or equal to the first interval.

702. The second terminal adjusts data transmission on the reserved resources. After the adjustment, there is no data transmission by the second terminal on the first resource of the reserved resources.

In the embodiment of the present application, in order to solve the LBT conflict problem shown in Figure 15, if the second terminal that reserves resources determines that the end position of the time domain of its reserved resources is the starting time domain of the first candidate resource of the first terminal, before the position, and the time interval between the time domain end position of the reserved resource and the starting time domain position of the first candidate resource is less than or equal to the first interval, then the second terminal can transmit data on the reserved resource. Adjustment is made so that there is no data transmission by the second terminal on the first resource of the adjusted reserved resource. The first resource may refer to a resource with a certain time domain length at the end of the reserved resource. Exemplarily, the specific method of adjusting data transmission may be: rate matching, or discarding the end of the corresponding transmission. Rate matching can be understood as occupying less resources, but still transmitting a complete transport block (transport block), and the code rate increases.

In some embodiments, the second terminal may determine whether to discard the last transmission based on the priorities of the first terminal and the second terminal. For descriptions of the priority of the terminal, reference may be made to the description of the foregoing embodiments, which will not be described again here. For example, when the priority of the first terminal is higher than the priority of the second terminal, the second terminal discards part of the transmission at the end or performs rate matching, that is, adjusts data transmission on reserved resources. In some embodiments, the time domain length of the first resource may be 1 symbol, or a (pre)configured length, or determined according to at least one of the first terminal's LBT type, CAPC, CPE, and counter initial value N.

Please refer to Figure 17, which is a schematic flow chart of a resource sharing method provided by an embodiment of the present application. Figures 2a to 2b can be system architecture diagrams applicable to the resource exclusion method. As shown in Figure 17, the method may include: 801-802, where the execution order of each step is not limited by the embodiment of this application. As shown in Figure 17, the resource sharing method in this embodiment of the present application includes but is not limited to the following steps:

801. The second terminal or network device sends COT sharing indication information. The COT sharing indication information is used to instruct (authorize) the first terminal to use the first resource in the first COT for transmission. The first resource and the COT The time domain interval of the resource where the sharing indication information is located is greater than or equal to the first duration.

The COT sharing instruction information of this application can be sent by the terminal of the initial COT, or sent by the network device. It is applicable to the full text and not only to this embodiment.

The COT length unit of the first COT can be any time domain granularity such as slot, symbol, ms, us, etc.

802. The first terminal receives COT sharing indication information.

The first duration is determined based on (pre)configuration, and/or service priority (or physical layer priority), and/or subcarrier spacing, and/or UE capabilities.

The unit of the first duration may be any time domain granularity such as time slot, symbol, ms, us, etc. In other words, the interval between the time when the second terminal or the network device sends the COT sharing indication information (or the time when the first terminal receives the COT sharing indication information) and the first resource to be shared cannot be less than the first duration.

In other words, the minimum interval between the time when the first terminal receives the COT sharing indication information (or the time when the second terminal or the network device sends the COT sharing indication information) and the shared first resource is the first duration.

In other words, the interval between the time when the first terminal receiving the COT sharing indication information does not expect to receive the COT sharing indication information (or the time when the second terminal or the network device sends the COT sharing indication information) and the shared first resource is smaller than the first time. duration.

In other words, the first terminal that receives the COT sharing indication information does not expect that the time when the COT sharing indication information is received (or the time when the second terminal or the network device sends the COT sharing indication information) is later than the first time period before the shared first resource. .

Among them, the above-mentioned time of sending or receiving the COT sharing indication information can refer to any of the following:

The starting time to send or receive COT sharing indication information;

The end time of sending or receiving COT sharing indication information;

The starting time of the channel (PSSCH or PSCCH) where the COT sharing indication information is sent or received;

The end time of the channel (PSSCH or PSCCH) where the COT sharing indication information is sent or received;

The interval between the moment when the COT sharing indication information is sent or received and the shared first resource may refer to any of the following:

The interval between the time when COT sharing indication information is sent or received and the starting position of the shared first resource (such as the starting symbol);

The interval between the time when COT sharing indication information is sent or received and a certain AGC symbol in the shared first resource. For example, the interval between AGC symbols where the actual transmission begins. Because the actual transmission should start from the AGC symbol, there may be multiple AGC symbol positions in one time slot.

For example, the first duration in the embodiment of the present application may be determined based on (pre)configuration, and/or service priority (or physical layer priority), and/or subcarrier spacing, and/or terminal capabilities.

Optionally, the first duration may include one or more of the second duration, the third duration, the fourth duration, and the fifth duration. For example, equal to the duration of any one of them, or equal to the sum of multiple of them.

The second duration is T ₀ , where T ₀ is determined according to the (pre)configuration, for example, 100ms or 1100ms.

The third duration is in The value of is determined based on the subcarrier spacing, for example, as shown in Table 1:

Table I

The fourth duration is T ₁ , where the value of T ₁ is one of the following:

1, For example Or, T ₁ =0;

The value of can be determined according to the subcarrier spacing, for example, as shown in Table 2:

Table II

2. T ₁ is determined based on subcarrier spacing and/or UE capabilities.

The fifth duration is T ₂ , where the value of T ₂ is one of the following:

1. T _2min ≤T ₂ ≤remaining packet delay budget (in slots), for example, T ₂ =T _2min , or, T ₂ =remaining packet delay budget (in slots);

The value of T _2min can be determined based on the service priority (or physical layer priority) and/or (pre)configuration and/or subcarrier spacing. For example, pre-configure the value corresponding to each priority (1~8) (candidate values are n1, n5, n10, n20) (the value n1 corresponds to 1*2 ^μ , the value n5 corresponds to 5*2 ^μ , and so on, where μ=0, 1, 2, and 3 respectively represent subcarrier intervals of 15, 30, 60, and 120 kHz), which are also applicable to Table 1 and Table 2. For example, the corresponding T _2min value is determined based on the mapping relationship between the (pre)configured priority and the corresponding value and the priority.

The value of remaining packet delay budget can be determined based on subcarrier spacing and/or (pre)configuration. For example, the (pre)configuration value is {0...1023} (unit 0.5ms), and the unit is converted into the value of slots according to the subcarrier spacing.

2. T ₂ is determined according to the service priority (or physical layer priority) and/or subcarrier spacing and/or UE capabilities.

Since the terminal needs to perform packet encoding and so on between receiving the COT sharing indication information and preparing the data to be sent, it takes a certain amount of time. Therefore, this application defines that there needs to be a minimum interval between the end position of sending COT sharing indication information and the starting position of the resource used for sharing, so as to allow enough time for data processing.

The following will introduce the communication device provided by the embodiment of the present application.

This application divides the communication device into functional modules according to the above method embodiments. For example, each functional module can be divided corresponding to each function, or two or more functions can be integrated into one processing module. The above integrated modules can be implemented in the form of hardware or software function modules. It should be noted that the division of modules in this application is schematic and is only a logical function division. In actual implementation, there may be other division methods. The communication device according to the embodiment of the present application will be described in detail below with reference to FIGS. 18 to 20 .

Figure 18 is a schematic structural diagram of a communication device provided by an embodiment of the present application. As shown in Figure 18, the communication device 1000 can correspondingly implement the communication device (such as the first terminal, the second terminal or the third terminal) in each of the above method embodiments. Three terminals) functions or steps implemented. The communication device may include a processing unit 1200 and a transceiver unit 1100. Optionally, a storage unit may also be included, which may be used to store instructions (code or programs) and/or data. The processing unit 1200 and the transceiver unit 1100 can be coupled with the storage unit. For example, the processing unit 1200 can read instructions (codes or programs) and/or data in the storage unit to implement corresponding methods. Each of the above units can be set up independently or partially or fully integrated. For example, the transceiver unit 1100 may include a transmitting unit and a receiving unit. The sending unit may be a transmitter, and the receiving unit may be a receiver. The entity corresponding to the transceiver unit 1100 may be a transceiver.

In some possible implementations, the communication device 1000 can correspondingly implement the behaviors and functions of the first terminal in the above method embodiments. For example, the communication device 1000 may be a first terminal, or a component (such as a chip or a circuit) used in the first terminal. The transceiver unit 1100 may be used to perform all receiving or sending operations performed by the first terminal in the embodiments of FIG. 3, FIG. 8, FIG. 10, FIG. 11, FIG. 13, FIG. 14 and FIG. 16, for example, FIG. 3, FIG. 8, steps 302 and 303 in the embodiment shown in FIG. 10, receiving LBT parameter information in the embodiment shown in FIG. 13, and/or other processes used to support the technology described herein. . The processing unit 1200 is configured to perform all operations except for the sending and receiving operations performed by the first terminal in the embodiments of FIG. 3, FIG. 8, FIG. 10, FIG. 11, FIG. 13, FIG. 14, and FIG. Step 101, step 102 and step 103 in the embodiment shown in Figure 8, step 201, step 202 and step 203 in the embodiment shown in Figure 8, step 401 and step 402 in the embodiment shown in Figure 11, Figure 13 Steps 501 and 502 in the embodiment shown, and steps 601 and 602 in the embodiment shown in FIG. 14 .

In some possible implementations, the communication device 1000 can correspondingly implement the behaviors and functions of the second terminal in the above method embodiments. For example, the communication device 1000 may be a second terminal, or may be a component (such as a chip or a circuit) used in the second terminal. The transceiver unit 1100 may, for example, be used to perform all receiving or sending operations performed by the second terminal in the embodiments of FIG. 10 and FIG. 16 , such as step 306 in the embodiment shown in FIG. 10 , and/or to support this article. Other processes for the described technology. The processing unit 1200 is configured to perform all operations except for the sending and receiving operations performed by the second terminal in the embodiments of FIG. 10 and FIG. 16 , step 305 of the embodiment shown in FIG. 10 , and step 305 of the embodiment shown in FIG. 16 Step 701 and step 702.

In some possible implementations, the communication device 1000 can correspondingly implement the behaviors and functions of the third terminal in the above method embodiments. For example, the communication device 1000 may be a third terminal, or may be a component (such as a chip or a circuit) used in the third terminal. The transceiver unit 1100 may, for example, be used to perform all receiving or sending operations performed by the third terminal in the embodiment of FIG. 10 , such as steps 303 and 306 in the embodiment of FIG. 10 , and/or be used to support this article. Other processes for the described technology. The processing unit 1200 is configured to perform all operations except the sending and receiving operations performed by the third terminal in the embodiment of FIG. 10 , steps 304 and 307 of the embodiment shown in FIG. 10 .

The above describes the first terminal, the second terminal and the third terminal in the embodiment of the present application. The possible product forms of the first terminal, the second terminal and the third terminal are introduced below. It should be understood that any form of product that has the function of the first terminal described in Figure 18 above, or any form of product that has the function of the second terminal described in Figure 18 above, or any form of product that has the function of the second terminal described in Figure 18 above Any form of product with the functions of the third terminal falls within the protection scope of the embodiments of this application. It should also be understood that the following introduction is only an example, and does not limit the product forms of the first terminal, the second terminal and the third terminal in the embodiments of the present application.

In a possible implementation, in the communication device shown in Figure 18, the processing unit 1200 may be one or more processors, the transceiver unit 1100 may be a transceiver, or the transceiver unit 1100 may also be a sending unit and a receiving unit. , the sending unit may be a transmitter, and the receiving unit may be a receiver, and the sending unit and the receiving unit are integrated into one device, such as a transceiver. In the embodiment of the present application, the processor and the transceiver may be coupled, etc., and the embodiment of the present application does not limit the connection method between the processor and the transceiver.

Figure 19 is a schematic structural diagram of another communication device 2000 provided by an embodiment of the present application. The communication device in FIG. 19 may be the above-mentioned first terminal, the above-mentioned second terminal, or the above-mentioned third terminal.

As shown in Figure 19, the communication device 2000 includes one or more processors 2200 and transceivers 2100. The transceiver 2100 can implement the functions of the transceiver unit 1100, and the processor 2200 can implement the functions of the processing unit 1200.

In various implementations of the communication device shown in FIG. 19, the transceiver may include a receiver and a transmitter, the receiver is used to perform the function (or operation) of receiving, and the transmitter is used to perform the function (or operation) of transmitting. ). and transceivers for communication over transmission media and other equipment/devices.

Optionally, the communication device 2000 may also include one or more memories 2300 for storing program instructions and/or data. Memory 2300 and processor 2200 are coupled. The coupling in the embodiment of this application is an indirect coupling or communication connection between devices, units or modules, which may be in electrical, mechanical or other forms, and is used for information interaction between devices, units or modules. Processor 2200 may cooperate with memory 2300. Processor 2200 can execute program instructions stored in memory 2300.

The specific connection medium between the above-mentioned transceiver 2100, processor 2200 and memory 2300 is not limited in the embodiment of the present application. In the embodiment of the present application, the transceiver 2100, the processor 2200 and the memory 2300 are connected through a bus 2400 in Figure 19. The bus is represented by a thick line in Figure 19. The connection between other components is only a schematic explanation. , is not limited. The bus can be divided into address bus, data bus, control bus, etc. For ease of presentation, only one thick line is used in Figure 19, but it does not mean that there is only one bus or one type of bus.

In the embodiment of the present application, the processor may be a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, etc., which can be implemented Or execute the disclosed methods, steps and logical block diagrams in the embodiments of this application. A general-purpose processor may be a microprocessor or any conventional processor, etc. The steps of the methods disclosed in conjunction with the embodiments of the present application can be directly implemented by a hardware processor, or executed by a combination of hardware and software modules in the processor, etc.

In the embodiment of the present application, the memory may include but is not limited to non-volatile memories such as hard disk drive (HDD) or solid-state drive (SSD), random access memory (Random Access Memory, RAM), Erasable Programmable ROM (EPROM), Read-Only Memory (ROM) or Portable Read-Only Memory (Compact Disc Read-Only Memory, CD-ROM), etc. Memory is any storage medium that can be used to carry or store program codes in the form of instructions or data structures, and that can be read and/or written by a computer (such as the communication device shown in this application), but is not limited thereto. The memory in the embodiment of the present application can also be a circuit or any other device capable of realizing a storage function, used to store program instructions and/or data.

The processor 2200 is mainly used to process communication protocols and communication data, control the entire communication device, execute software programs, and process data of the software programs. Memory 2300 is mainly used to store software programs and data. The transceiver 2100 may include a control circuit and an antenna. The control circuit is mainly used for conversion of baseband signals and radio frequency signals and processing of radio frequency signals. Antennas are mainly used to send and receive radio frequency signals in the form of electromagnetic waves. Input and output devices, such as touch screens, display screens, keyboards, etc., are mainly used to receive data input by users and output data to users.

When the communication device is turned on, the processor 2200 can read the software program in the memory 2300, interpret and execute the instructions of the software program, and process the data of the software program. When data needs to be sent wirelessly, the processor 2200 performs baseband processing on the data to be sent, and then outputs the baseband signal to the radio frequency circuit. The radio frequency circuit performs radio frequency processing on the baseband signal and then sends the radio frequency signal out in the form of electromagnetic waves through the antenna. When data is sent to the communication device, the radio frequency circuit receives the radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor 2200. The processor 2200 converts the baseband signal into data and performs processing on the data. deal with.

In another implementation, the radio frequency circuit and antenna can be arranged independently of the processor that performs baseband processing. For example, in a distributed scenario, the radio frequency circuit and antenna can be arranged remotely and independently of the communication device. .

It can be understood that the communication device shown in the embodiment of the present application may also have more components than in Figure 19 , and the embodiment of the present application does not limit this. The methods performed by the processor and transceiver shown above are only examples. For specific steps performed by the processor and transceiver, please refer to the method introduced above.

In another possible implementation, in the communication device shown in Figure 18, the processing unit 1200 may be one or more logic circuits, and the transceiver unit 1100 may be an input-output interface, also known as a communication interface, or an interface circuit. , or interface, etc. Alternatively, the transceiver unit 1100 may also be a sending unit and a receiving unit. The sending unit may be an output interface, and the receiving unit may be an input interface. The sending unit and the receiving unit may be integrated into one unit, such as an input-output interface. As shown in FIG. 20 , the communication device shown in FIG. 20 includes a logic circuit 3001 and an interface 3002 . That is, the above-mentioned processing unit 1200 can be implemented by the logic circuit 3001, and the transceiver unit 1100 can be implemented by the interface 3002. Among them, the logic circuit 3001 can be a chip, a processing circuit, an integrated circuit or a system on chip (SoC) chip, etc., and the interface 3002 can be a communication interface, an input/output interface, a pin, etc. Illustratively, FIG. 20 takes the above communication device as a chip, and the chip includes a logic circuit 3001 and an interface 3002.

In the embodiment of the present application, the logic circuit and the interface may also be coupled to each other. The embodiments of this application do not limit the specific connection methods of the logic circuits and interfaces.

Exemplarily, when the communication device is used to perform the method or function or step performed by the first terminal, the logic circuit 3001 is used to determine the reserved resources of the second terminal, and the reserved resources include third resources or fourth resources. At least one of the resources, the third resource is a resource used for transmission by the second terminal in the second COT of the second terminal, and the fourth resource includes the second COT except the third resource. Resources outside the three resources or resources used for sharing in the second COT; and excluding the first candidate resource from the candidate resource set, and the resource exclusion conditions are satisfied between the first candidate resource and the reserved resource, so The resource exclusion condition includes a conflict between the first candidate resource and the reserved resource.

Exemplarily, the interface 3002 is used to receive resource indication information of the second terminal, and the resource indication information is used to determine the third resource and the fourth resource.

Exemplarily, when the communication device is used to perform the method or function or step performed by the first terminal, the logic circuit 3001 is used to determine the reserved resources of the second terminal; and exclude the first candidate resource from the candidate resource set, The first candidate resource includes at least one of a first resource or a second resource; the first resource is a resource used for transmission by the first terminal within the first channel occupancy time COT of the first terminal, The second resource includes resources in the first COT other than the first resource or resources used for sharing in the first COT, and the resource requirement between the first candidate resource and the reserved resource satisfies Exclusion conditions, the resource exclusion conditions include a first condition or a second condition, the first condition includes a conflict between the first resource and the reserved resource; the second condition includes the first resource or the At least one of the second resources conflicts with the reserved resources.

It can be understood that the communication device shown in the embodiments of the present application can be implemented in the form of hardware to implement the methods provided in the embodiments of the present application, or can be implemented in the form of software to implement the methods provided in the embodiments of the present application. This is not limited by the embodiments of the present application.

An embodiment of the present application also provides a wireless communication system. The wireless communication system includes a first terminal and a second terminal. The first terminal and the second terminal can be used to perform the method in any of the foregoing embodiments. Exemplarily, the wireless communication system may also include a third terminal.

In addition, this application also provides a computer-readable storage medium, which stores computer code. When the computer code is run on a computer, it causes the computer to execute the method provided by this application by the first terminal, or Operations and/or processing performed by the second terminal or the third terminal.

This application also provides a computer program product. The computer program product includes computer code or computer program. When the computer code or computer program is run on the computer, the first terminal or the second terminal in the method provided by this application causes , or the operations and/or processing performed by the third terminal are performed.

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

The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or they may be distributed to multiple network units. You can choose according to actual needs Select some or all of the units to achieve the technical effects of the solutions provided by the embodiments of this application.

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

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

The above are only specific embodiments of the present application, but the protection scope of the present application is not limited thereto. Any person familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application. should be covered by the protection scope of this application. Therefore, the protection scope of this application should be subject to the protection scope of the claims.

Claims

A resource exclusion method, characterized by including:

The first terminal determines the reserved resources of the second terminal;

The first terminal excludes a first candidate resource from a candidate resource set, where the first candidate resource includes at least one of a first resource or a second resource; the first resource is a first channel of the first terminal Resources used for transmission by the first terminal within the occupied time COT, the second resources include resources in the first COT other than the first resources or resources used for sharing in the first COT, The first candidate resource and the reserved resource satisfy a resource exclusion condition. The resource exclusion condition includes a first condition or a second condition. The first condition includes the first resource and the reserved resource. Conflict; the second condition includes that at least one of the first resource or the second resource conflicts with the reserved resource.
The method of claim 1, wherein the resource exclusion condition includes the first condition or the second condition is determined based on at least one of the following:

The comparison result between the priority of the first terminal and the second priority threshold;

The comparison result between the resource priority in the first COT and the priority of the reserved resources of the second terminal;

The comparison result between the priority of the second resource and the priority of the reserved resource;

Requirement information on whether the second resource is shared;

Preconfigured information.
The method according to claim 1 or 2, characterized in that the candidate resource set includes multiple candidate resources, one candidate resource occupies the length of one COT in the time domain, or one candidate resource occupies the length of one COT in the time domain. A basic time unit; the plurality of candidate resources include the first candidate resource.
The method of claim 3, wherein if one candidate resource occupies the length of one COT in the time domain, there is no overlap between each of the plurality of candidate resources; or, the plurality of candidate resources There are partially overlapping candidate resources in the resource.
The method of claim 4, wherein the position difference in the time domain between two candidate resources among the plurality of candidate resources is N basic time units, and N is an integer greater than or equal to 1.
The method according to any one of claims 1 to 5, wherein the reserved resources include at least one of third resources or fourth resources;

The third resource is a resource used for transmission by the second terminal in the second COT of the second terminal, and the fourth resource includes resources in the second COT other than the third resource or The second COT is used for shared resources.
The method of claim 6, wherein whether the reserved resources include the fourth resources is determined based on at least one of the following:

The comparison result between the priority of the first terminal and the first priority threshold;

The comparison result between the service priority of the first terminal and the service priority of the second terminal;

The comparison result between the resource priority in the first COT of the first terminal and the resource priority in the second COT of the second terminal;

The comparison result between the service priority of the first terminal and the service priority carried by the fourth resource;

Transmitting and receiving relationship information between the first terminal and the second terminal;

The remaining packet delay budget PDB of the first terminal;

The comparison result between the Source ID and/or the destination ID of the first terminal and the Source ID and/or destination ID of the second terminal;

Channel congestion level information;

Preconfigured information;

Instruction information from the second terminal, the instruction information being used to instruct release of the fourth resource;

COT sharing indication information associated with the second COT, the COT sharing indication information is used to instruct sharing of resources in the second COT with the first terminal.
A resource exclusion method, characterized by including:

The first terminal determines the reserved resources of the second terminal. The reserved resources include at least one of third resources or fourth resources. The third resources are used for the second COT of the second terminal. Resources for transmission by the second terminal, the fourth resources include resources in the second COT other than the third resources or resources for sharing in the second COT;

The first terminal excludes a first candidate resource from a set of candidate resources, and a resource relationship between the first candidate resource and the reserved resource satisfies Exclusion conditions, the resource exclusion conditions include a conflict between the first candidate resource and the reserved resource.
The method of claim 8, wherein whether the reserved resources include the fourth resources is determined based on at least one of the following:

The comparison result between the priority of the first terminal and the first priority threshold;

The comparison result between the service priority of the first terminal and the service priority of the second terminal;

The comparison result between the resource priority in the first COT of the first terminal and the resource priority in the second COT of the second terminal, where the first COT includes the first candidate resource;

The comparison result between the service priority of the first terminal and the service priority carried by the fourth resource;

Transmitting and receiving relationship information between the first terminal and the second terminal;

The remaining packet delay budget PDB of the first terminal;

The comparison result between the Source ID and/or the destination ID of the first terminal and the Source ID and/or destination ID of the second terminal;

Channel congestion level information;

Preconfigured information;

Instruction information from the second terminal, the instruction information being used to instruct release of the fourth resource;

COT sharing indication information associated with the second COT, the COT sharing indication information is used to instruct sharing of resources in the second COT to the first terminal.
A communication device, characterized by including:

a processing unit, used to determine the reserved resources of the second terminal;

The processing unit is further configured to exclude a first candidate resource from the candidate resource set, where the first candidate resource includes at least one of a first resource or a second resource; the first resource is the first resource of the first terminal. Resources used for transmission by the first terminal within a channel occupancy time COT. The second resources include resources in the first COT other than the first resources or resources used for sharing in the first COT. resource, the first candidate resource and the reserved resource satisfy a resource exclusion condition, the resource exclusion condition includes a first condition or a second condition, and the first condition includes the first resource and the reserved resource. The reserved resource conflicts; the second condition includes that at least one of the first resource or the second resource conflicts with the reserved resource.
The device of claim 10, wherein the resource exclusion condition includes the first condition or the second condition is determined based on at least one of the following:

The comparison result between the priority of the first terminal and the second priority threshold;

The comparison result between the resource priority in the first COT and the priority of the reserved resources of the second terminal;

The comparison result between the priority of the second resource and the priority of the reserved resource;

Requirement information on whether the second resource is shared;

Preconfigured information.
The device according to claim 10 or 11, characterized in that the candidate resource set includes multiple candidate resources, one candidate resource occupies the length of one COT in the time domain, or one candidate resource occupies the length of one COT in the time domain. A basic time unit; the plurality of candidate resources include the first candidate resource.
The apparatus according to claim 12, wherein if one candidate resource occupies the length of one COT in the time domain, there is no overlap between each of the plurality of candidate resources; or, the plurality of candidate resources There are partially overlapping candidate resources in the resource.
The apparatus according to claim 13, wherein the position difference in the time domain between two candidate resources among the plurality of candidate resources is N basic time units, and N is an integer greater than or equal to 1.
The device according to any one of claims 10 to 14, wherein the reserved resources include at least one of third resources or fourth resources;

The third resource is a resource used for transmission by the second terminal in the second COT of the second terminal, and the fourth resource includes resources in the second COT other than the third resource or The second COT is used for shared resources.
The apparatus of claim 15, wherein whether the reserved resources include the fourth resources is determined based on at least one of the following:

The comparison result between the priority of the first terminal and the first priority threshold;

The comparison result between the service priority of the first terminal and the service priority of the second terminal;

The comparison result between the resource priority in the first COT of the first terminal and the resource priority in the second COT of the second terminal;

The comparison result between the service priority of the first terminal and the service priority carried by the fourth resource;

Transmitting and receiving relationship information between the first terminal and the second terminal;

The remaining packet delay budget PDB of the first terminal;

The comparison result between the Source ID and/or destination ID of the first terminal and the Source ID and/or destination ID of the second terminal;

Channel congestion level information;

Preconfigured information;

Instruction information from the second terminal, the instruction information being used to instruct release of the fourth resource;

COT sharing indication information associated with the second COT, the COT sharing indication information is used to instruct sharing of resources in the second COT to the first terminal.
A communication device, characterized by including:

A processing unit configured to determine reserved resources of the second terminal, where the reserved resources include at least one of third resources or fourth resources, where the third resources are used in the second COT of the second terminal. The resources transmitted by the second terminal, the fourth resources include resources in the second COT except the third resources or resources used for sharing in the second COT;

The processing unit is further configured to exclude a first candidate resource from the candidate resource set, and a resource exclusion condition is satisfied between the first candidate resource and the reserved resource. The resource exclusion condition includes the first candidate resource and the reserved resource. The reserved resources conflict.
The apparatus of claim 17, wherein whether the reserved resources include the fourth resources is determined based on at least one of the following:

The comparison result between the priority of the first terminal and the first priority threshold;

The comparison result between the service priority of the first terminal and the service priority of the second terminal;

The comparison result between the resource priority in the first COT of the first terminal and the resource priority in the second COT of the second terminal, where the first COT includes the first candidate resource;

The comparison result between the service priority of the first terminal and the service priority carried by the fourth resource;

Transmitting and receiving relationship information between the first terminal and the second terminal;

The remaining packet delay budget PDB of the first terminal;

The comparison result between the Source ID and/or destination ID of the first terminal and the Source ID and/or destination ID of the second terminal;

Channel congestion level information;

Preconfigured information;

Instruction information from the second terminal, the instruction information being used to instruct release of the fourth resource;

COT sharing indication information associated with the second COT, the COT sharing indication information is used to instruct sharing of resources in the second COT to the first terminal.
A resource exclusion method, characterized by including:

The first terminal determines the first resource used for transmission by the first terminal, and initializes the first channel access time COT according to the first resource;

The first terminal sends COT sharing indication information, and the COT sharing indication information is carried in the second-level side link control information SCI or the media access control-control element MAC-CE.
The method of claim 19, further comprising:

The first terminal sends a first-level SCI, the first-level SCI includes at least one of the following or the first-level SCI may indicate a parameter, the parameter is used to determine at least one of the following: with the first-level Format information of the second-level SCI associated with the SCI; indication information used to indicate that the second-level SCI or the MAC-CE associated with the first-level SCI contains the COT sharing indication information; the The number of bits occupied by the COT sharing indication information; the number of the COT indication information.
A resource exclusion method, characterized by including:

The second terminal receives COT sharing indication information, and the COT sharing indication information is carried in the second-level side link control information SCI or the media access control-control element MAC-CE;

The second terminal performs transmission according to the COT sharing indication information.
The method of claim 21, further comprising:

The second terminal receives the first level SCI, the first level SCI includes at least one of the following or the first level SCI may indicate a parameter, the parameter is used to determine at least one of the following: with the first level Format information of the second-level SCI associated with the SCI; indication information used to indicate that the second-level SCI or the MAC-CE associated with the first-level SCI contains the COT sharing indication information; the COT The number of bits occupied by the shared indication information; the number of the COT indication information.
A communication device, characterized by including:

A processing unit configured to determine the first resource used for transmission by the first terminal, and initialize the first channel access time COT according to the first resource;

A transceiver unit configured to send COT sharing indication information, where the COT sharing indication information is carried in the second-level side link control information SCI or the media access control-control element MAC-CE.
The communication device according to claim 23, characterized in that:

The transceiver unit is also used to send a first-level SCI. The first-level SCI includes at least one of the following or the first-level SCI may indicate a parameter. The parameter is used to determine at least one of the following: with the first level. Format information of the second-level SCI associated with the first-level SCI; indication information used to indicate that the second-level SCI or the MAC-CE associated with the first-level SCI contains the COT sharing indication information; The number of bits occupied by the COT sharing indication information; the number of the COT indication information.
A communication device, characterized by including:

A transceiver unit configured to receive COT sharing indication information, where the COT sharing indication information is carried in the second-level side link control information SCI or the media access control-control element MAC-CE;

A processing unit, configured to transmit according to the COT sharing indication information.
The device according to claim 25, characterized in that:

The transceiver unit is also configured to receive a first-level SCI. The first-level SCI includes at least one of the following or the first-level SCI may indicate a parameter. The parameter is used to determine at least one of the following: the same as the first-level SCI. Format information of the second-level SCI associated with the first-level SCI; indication information used to indicate that the second-level SCI or the MAC-CE associated with the first-level SCI contains the COT sharing indication information; The number of bits occupied by the COT sharing indication information; the number of the COT indication information.
A communication device, characterized by including a processor;

The processor is coupled to a memory;

The memory is used to store instructions;

The processor is configured to execute the instructions so that the method described in any one of claims 1-7 is executed; or,

The processor is used to execute the instructions so that the method of claim 8 or 9 is executed; or,

The processor is used to execute the instructions so that the method described in claim 19 or 20 is executed; or,

The processor is configured to execute the instructions so that the method of claim 21 or 22 is executed.
A computer-readable storage medium, characterized in that the computer-readable storage medium is used to store computer programs or instructions. When the computer program or instructions are executed, the method of any one of claims 1-7 is executed; or when the computer program or instructions are executed, the method of claim 8 or 9 is executed; or when the computer program or instructions are executed, the method of claims 19 or 20 is executed. Execution; or, when the computer program or instruction is executed, the method described in claim 21 or 22 is executed.