CN117676721A

CN117676721A - Resource exclusion method and related product

Info

Publication number: CN117676721A
Application number: CN202210968753.6A
Authority: CN
Inventors: 李君瑶; 杨帆; 黄海宁; 张天虹
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2022-08-12
Filing date: 2022-08-12
Publication date: 2024-03-08
Also published as: WO2024032565A1

Abstract

The application provides a resource exclusion method and related products, wherein the resource exclusion method comprises the following steps: the first terminal determines reserved resources of the second terminal; the first terminal excludes a first candidate resource from a set of candidate resources, the first candidate resource comprising at least one of a first resource or a second resource; the first resource is a resource used for the first terminal to transmit in a first channel occupation time COT of the first terminal, the second resource comprises a resource except the first resource in the first COT or a resource used for sharing in the first COT, a resource exclusion condition is met between the first candidate resource and the reserved resource, the resource exclusion condition comprises a first condition or a second condition, and the first condition comprises a conflict between the first resource and the reserved resource; the second condition includes at least one of the first resource or the second resource colliding with the reserved resource. By adopting the method and the device, the resource elimination in the unlicensed spectrum side transmission scene can be realized.

Description

Resource exclusion method and related product

Technical Field

The present disclosure relates to the field of communications technologies, and in particular, to a method for resource exclusion and related products.

Background

The resource scheduling modes of the terminal for side link transmission are divided into a mode 1 and a mode 2, wherein the mode 1 refers to the resource scheduling work that the base station can be responsible for the terminal for side link transmission, and the mode 2 requires the terminal to perform autonomous resource selection for transmission according to a certain rule. Because the side link transmission is a distributed system, when the terminal selects the resources, a resource exclusion mechanism is introduced in order to avoid collision among transmission resources selected by a plurality of terminals. In short, the terminal with resource selection initializes a candidate resource set in a selection window, listens for the sidestream control information (sidelink control information, SCI) sent by other terminals in a sensing window, the SCI indicates resources to be occupied by the other terminals reserved in the SCI, and the terminal with resource selection excludes candidate resources, which collide with the reserved resources and indicate that the RSRP of the sidestream control channel or the corresponding sidestream data channel where the SCI with reserved resources is located in the candidate resource set is greater than a threshold value, from the reserved resources indicated by the other terminals, so as to determine a final candidate resource set, report the final candidate resource set to a media access control (medium access control, MAC) layer, and the MAC layer selects resources finally used for transmission.

With the generation of channel occupancy time (channel occupancy time, COT) sharing, a device may share resources that are not needed to be occupied in its own COT to other devices. How to implement a resource exclusion mechanism in a COT sharing scenario is a challenge.

Disclosure of Invention

The resource elimination method and the related product can realize resource elimination in a COT sharing scene and adapt to resource elimination requirements in different transmission scenes in an unlicensed spectrum.

In a first aspect, embodiments of the present application provide a method for resource exclusion, where the method may be performed by a first terminal, or may be performed by a component (e.g., a processor, a chip, or a chip system, etc.) of the first terminal. The resource exclusion method may include: the first terminal determines reserved resources of the second terminal; the first terminal excludes a first candidate resource from a set of candidate resources, the first candidate resource comprising at least one of a first resource or a second resource; the first resource is a resource used for transmission by the first terminal in the first channel occupation time COT of the first terminal, the second resource includes a resource in the first COT except for the first resource or a resource in the first COT used for sharing, and it can be understood that the resource in the first COT used for sharing may include a part of or all of the resources in the first COT except for the first resource.

Wherein a resource exclusion condition is satisfied between the first candidate resource and the reserved resource, the resource exclusion condition including a first condition or a second condition, the first condition including a collision of the first resource with the reserved resource; the second condition includes at least one of the first resource or the second resource colliding 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 used for transmission by the first terminal in the first COT of the first terminal or a second resource in the first COT, and when the resource exclusion is performed, whether the first resource collides with the reserved resource may be considered according to different situations, or the second resource in the first COT may also be considered, that is, the conflict between at least one of the first resource and the second resource and the reserved resource is considered as the resource conflict, so that the resource exclusion under the consideration of the COT sharing scenario is realized, and the resource exclusion requirement under different transmission scenarios in the unlicensed spectrum is adapted.

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

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

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

In one possible implementation, the resource exclusion condition may include a second condition if the priority of the first terminal is greater than or equal to a second priority threshold; the resource exclusion condition may include a first condition if the priority of the first terminal is less than a second priority threshold. By the method, the whole COT of the first terminal and the reserved resources are ensured not to be overlapped under the scene that the priority of the first terminal is higher, so that the COT of the first terminal is not interrupted.

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

2. A result of comparing the priority of the resources in the first COT with 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, the first resource used for the first terminal transmission in the first COT, or the resource used for sharing in the first COT, or other resources except the resource used for the first terminal transmission in the first COT may be used. For convenience of description, the present application refers to the resources used for sharing in the first COT, or other resources in the first COT except for the resources used for the transmission of the first terminal, as the second resources, that is, the result of comparing the priority of the second resources with the priority of the reserved resources. Optionally, the resource priority may also refer to a priority of the first COT. The reserved resources may refer to all resources or any one or more resources of the reserved resources of the second terminal. For example, it may be a resource for the second terminal transmission, or a resource for sharing, or other resources than the resource for the second terminal transmission. Optionally, the priority of the reserved resource may also refer to a priority of the COT of the second terminal. The resource priority in the first COT may be understood as a priority of a first resource used for transmission by the first terminal in the first COT, or a priority of a second resource used for sharing in the first COT of the first terminal, or a resource priority of the first COT of the first terminal, or a highest or lowest resource priority in the first COT. The priority of the reserved resource of the second terminal may be understood as the priority of the resource for transmission by the second terminal in the second COT of the second terminal, or the priority of the resource for sharing in the second COT of the second terminal, or the priority of the resource of the second COT of the second terminal, or the highest or lowest priority of the resources within the second COT of the second terminal. The resource priority may refer to at least one of a service priority, a physical layer priority, a priority of the UE, and a caps, or may be determined according to at least one of a service priority, a physical layer priority, a priority of the UE, and a caps.

In one implementation, the resource exclusion condition includes a second condition if the priority of resources within the first COT is greater than or equal to the priority of reserved resources of the second terminal. If the priority of the resources in the first COT is smaller than the priority of the reserved resources of the second terminal, the resource exclusion condition comprises a first condition, and the fact that the whole COT of the first terminal is not overlapped with the reserved resources is guaranteed, so that the COT of the first terminal is not interrupted.

In another implementation, the resource exclusion condition may also include the first condition if the priority of the resource within the COT is greater than or equal to the priority of the reserved resource of the second terminal. Since other terminals avoid the first terminal, the COT of the first terminal can be ensured not to be interrupted. The resource exclusion condition includes a second condition if the priority of the resource within the first COT is less than the priority of the reserved resource of the second terminal.

3. Demand information whether the second resource is shared;

the resource exclusion condition includes the first condition if the second resource is not shared to other terminals. If the second terminal is shared to other terminals, the resource exclusion condition includes a second condition, and it is necessary to avoid the first COT from being interrupted. The requirement information may be determined according to at least one of request information of other terminals, indication information of a base station, reservation information of other terminals, implementation of the first terminal, and (pre) configuration.

4. Information of the (pre) configuration.

Predefined, or semi-static configuration of the bearers in RRC, indication of bearers in SCI or DCI or other dynamic signalling, etc. may be referred to as (pre) configuration. It is to be understood that the description herein of the (pre) configuration applies to all embodiments of the present application and is not limited to only that embodiment.

5. Whether the first terminal is the terminal that initiated the first COT or whether there are other terminals that would share the COT with the first terminal.

If the first COT is initialized by the first terminal through the LBT, it is explained that the first terminal has the right to share the second resource, and thus the resource exclusion condition needs to include the second condition. If the first COT is not initialized by the first terminal through the LBT, it is indicated that the first terminal does not have the right to share the second resource, and thus the resource exclusion condition may include a first condition. Whether the first terminal is a terminal that initiates the first COT or whether there are other terminals that will share the COT to the first terminal may be determined according to at least one of implementation of the first terminal, indication information of the base station, COT sharing information of the other terminals, reservation information of the other terminals, and the like.

When the method is implemented, resource elimination is carried out under different conditions, the first resources reserved for transmission are determined to avoid reserved resources of other terminals, or the first COT of the first terminal avoids reserved resources of other terminal equipment, so that the method is suitable for requirements under different conditions, ensures continuity of the COT of the first terminal selectively, can effectively improve system efficiency, and avoids excessive elimination and resource waste when no sharing requirements exist.

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

Implementing the method, if the granularity of the candidate resource can be a basic time unit, thereby flexibly determining that the candidate resource comprises at least one of the first resource or the second resource; if the granularity of the candidate resource is the COT granularity, the efficiency of resource exclusion may be improved.

In one possible implementation, if one candidate resource occupies a length of one COT in a time domain, there is no overlap between each candidate resource in the plurality of candidate resources; or, there are partially overlapping candidate resources in the plurality of candidate resources.

When the granularity of the candidate resources is COT granularity, the method can flexibly determine the time domain and/or frequency domain position of each candidate resource, and fully utilize the resources.

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

The method is implemented, and the position difference of two candidate resources in the time domain is defined, so that the position of each candidate resource in the time domain is conveniently determined.

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

the third resource is a resource used for the second terminal to transmit in a second COT of the second terminal, and the fourth resource includes a resource in the second COT except the third resource or a resource used for sharing in the second COT.

By implementing the method, the reserved resources can comprise at least one of third resources or fourth resources, so that the flexibility of the determination of the reserved resources is improved, and the method is applicable to different requirements and scenes.

In one possible implementation, whether the reserved resource includes the fourth resource is determined based on at least one of:

A. the service priority of the first terminal is compared with a first priority threshold;

B. the service priority of the first terminal is compared with the service priority of the second terminal;

C. a result of comparing the resource priority in the first COT of the first terminal with the resource priority in the second COT of the second terminal;

D. The service priority of the first terminal is compared with the service priority carried by the fourth resource;

E. receiving and transmitting relation information between the first terminal and the second terminal;

F. a remaining packet delay budget, PDB, for the first terminal;

G. the Source ID and/or the destination ID of the first terminal and the Source ID and/or the destination ID of the second terminal are compared;

H. congestion level information of the channel;

I. (pre) configured information;

J. the indication information of the second terminal is used for indicating the release of the fourth resource;

K. and COT sharing indication information associated with the second COT, wherein the COT sharing indication information is used for indicating sharing of resources in the second COT to the first terminal.

L, whether the second terminal is a terminal device initializing the second COT or whether other terminal devices share the COT to the second terminal.

By implementing the method, the first terminal for selecting the resources determines whether the reserved resources comprise fourth resources according to at least one of conditions, so that the first terminal can selectively avoid the shared fourth resources when further performing resource elimination and resource selection, and can ensure the continuity of the second COT of the second terminal or ensure the normal operation of a high-priority service preemption mechanism under different conditions, thereby effectively improving the system efficiency and realizing the trade-off between the two.

In a second aspect, embodiments of the present application provide a method for resource exclusion, where the method may be performed by a first terminal, or may be performed by a component (e.g., a processor, a chip, or a chip system, etc.) of the first terminal. The resource exclusion method may include:

the first terminal determines reserved resources of a second terminal, wherein the reserved resources comprise at least one of third resources or fourth resources, the third resources are resources used for transmission of the second terminal in a second COT of the second terminal, and the fourth resources comprise resources except the third resources in the second COT or resources used for sharing in the second COT;

the first terminal excludes a first candidate resource from a candidate resource set, wherein a resource exclusion condition is met between the first candidate resource and the reserved resource, and the resource exclusion condition comprises conflict between the first candidate resource and the reserved resource.

By implementing the method described in the second aspect, the reserved resources may include at least one of a third resource used for transmission by the second terminal in the second COT of the second terminal or a fourth resource in the second COT, so as to improve flexibility of determining the reserved resources, implement resource reservation under different COTs sharing scenarios, and facilitate improving system efficiency.

F. a remaining packet delay budget, PDB, for the first terminal;

H. congestion level information of the channel;

I. (pre) configured information;

In a third aspect, embodiments of the present application provide a method for resource exclusion, where the method is performed by a second terminal, and may also be performed by a component (e.g., a processor, a chip, or a system-on-chip) of a first terminal. The resource exclusion method may include: the second terminal sends resource indication information, wherein the resource indication information is used for determining third resources and fourth resources, the third resources are resources used for the second terminal to transmit in a second COT of the second terminal, and the fourth resources comprise resources except the third resources in the second COT or resources used for sharing in the second COT.

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

resources for the second terminal to transmit itself;

resources shared to other terminals in the second COT, which may be potential resources for sharing, that is, may not be shared, released, etc., are not limited;

the remaining resources within the second COT except for the resources for own transmission;

resources of a second COT;

a time domain starting position of the second COT;

a time domain end position of the second COT;

a time domain length of the second COT;

structural information of the second COT.

In a fourth aspect, embodiments of the present application provide a method for resource exclusion, where the method may be performed by a first terminal, or may be performed by a component (e.g., a processor, a chip, or a chip system, etc.) of the first terminal. The resource exclusion method may include: the method comprises the steps that a first terminal determines first resources for transmission of the first terminal, and initializes first channel access time COT according to the first resources;

and the first terminal sends COT sharing indication information, wherein the COT sharing indication information is used for indicating a second resource which is shared in the first COT.

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

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

By implementing the method, the COT sharing indication information can be carried.

In one possible implementation, the number of bits occupied by the COT sharing indication information is predefined or, alternatively, network device pre-configured (RRC).

By implementing the method, the bit number occupied by the COT sharing indication information is predefined or the network equipment is preconfigured, so that the blind detection complexity of the COT sharing indication information can be reduced.

In one possible implementation, the COT sharing indication information is carried in the second level SCI or the MAC-CE; the method further comprises the steps of:

the first terminal sends a first level SCI comprising at least one of the following or the first level SCI may indicate other parameters to determine at least one of the following from the other parameters: format information of the second stage SCI associated with the first stage SCI; indication information for indicating that the second stage SCI or the MAC-CE associated with the first stage SCI includes the COT sharing indication information; the COT shares the bit number that the pilot message occupies; the COT indicates the amount of information.

By implementing the method, the first-stage SCI indicates the information second-stage SCI or MAC-CE carrying the COT sharing indication, so that blind detection of a terminal receiving the information of the COT sharing indication can be avoided.

In a fifth aspect, embodiments of the present application provide a method for resource exclusion, where the method may be performed by a second terminal, or may be performed by a component (e.g., a processor, a chip, or a chip system, etc.) of the second terminal. The resource exclusion method may include: the second terminal receives COT sharing indication information sent by the first terminal according to first information, wherein the first information comprises information for indicating whether the COT sharing indication information is included or not and/or information for indicating the bit number of the COT sharing indication information, the COT sharing indication information is used for indicating second resources which are shared in a first COT, the first COT is the COT initialized by the first terminal according to the first resources, and the first resources are used for transmission of the first terminal;

and the second terminal transmits according to the resources indicated by the COT sharing indication information.

By implementing the method described in the fifth aspect, the COT sharing can be realized, and the terminal is prevented from blindly detecting the COT sharing indication information.

Specifically, optionally, the second terminal may determine whether the first-stage side link control information SCI, the second-stage SCI, or the medium access control-control element MAC-CE includes the COT sharing indication information, and/or determine the number of bits occupied by the COT sharing indication information, so as to determine the resource where the COT sharing indication information is located or a manner of receiving the COT sharing indication information, thereby receiving the COT sharing indication information on the corresponding resource, and transmitting according to the COT sharing indication information.

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

In one possible implementation, the method further includes:

the second terminal receives a first-stage SCI sent by the first terminal, wherein the first-stage SCI comprises at least one of the following components: format information of the second stage SCI associated with the first stage SCI; indication information for indicating that the second stage SCI or the MAC-CE associated with the first stage contains the COT sharing indication information; the COT shares the bit number that the pilot message occupies;

The second terminal receives COT sharing indication information sent by the first terminal, and the method comprises the following steps:

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

It should be noted that, the beneficial effects of the second terminal side may refer to the beneficial effects of the first terminal side, and the second terminal side is not described in detail.

In a sixth aspect, embodiments of the present application provide a method for resource exclusion, where the method may be performed by a first terminal, or may be performed by a component (e.g., a processor, a chip, or a chip system, etc.) of the first terminal. The resource exclusion method may include: the first terminal determines reserved resources of the second terminal;

the first terminal excludes a first candidate resource from a candidate resource set, wherein a resource exclusion condition is met between the first candidate resource and the reserved resource, and the resource exclusion condition comprises that the reserved resource and the first candidate resource overlap in a time domain.

By implementing the method described in the sixth aspect, the problem of LBT collision in the scenario that the reserved resource and the candidate resource are frequency division multiplexed can be effectively avoided.

In one possible implementation manner, in a case where the first terminal meets the third condition, the resource exclusion condition further includes that the first candidate resource and the reserved resource overlap in a frequency domain, in other words, in this case, the first candidate resource and the reserved resource overlap in both a time domain and a frequency domain and are excluded, and only the time domain overlap is not excluded, and the overlapping may include a partial overlap or a full overlap, which is not limited in the present application;

the third condition includes that at least one of the following parameters of the first terminal and the second terminal are the same: LBT type, channel priority cap, CPE, contention window value, counter initial value N. It can be appreciated that the counter N is used for LBT type1 procedure, affecting the number of times channel detection is performed and the total duration of LBT.

By implementing the method, time domain overlap elimination or time-frequency domain overlap elimination is selectively carried out, so that excessive elimination is avoided.

In a seventh aspect, embodiments of the present application provide a method for resource exclusion, where the method may be performed by a first terminal, or may be performed by a component (e.g., a processor, a chip, or a chip system, etc.) of the first terminal. The resource exclusion method may include: the first terminal determines reserved resources of the second terminal;

And under the condition that the reserved resources are overlapped with the first candidate resources in the candidate resource set in the time domain, the first terminal executes channel access according to the LBT parameter information of the second terminal.

By implementing the method described in the sixth aspect, the first terminal is convenient to determine the moment when to start to execute LBT, so that the problem of LBT collision in the scene of frequency division multiplexing of reserved resources and candidate resources can be effectively avoided.

In one possible implementation, the method further includes:

the first terminal receives the LBT parameter information from the second terminal, the LBT parameter information including at least one of: LBT type, cap, CPE, contention window value, counter initial value N.

In an eighth aspect, embodiments of the present application provide a method for resource exclusion, where the method may be performed by a first terminal, or may be performed by a component (e.g., a processor, a chip, or a chip system, etc.) of the first terminal. The resource exclusion method may include: the first terminal determines reserved resources of the second terminal;

the first terminal excludes a first candidate resource from a candidate resource set, a resource exclusion condition is met between the first candidate resource and the reserved resource, the resource exclusion condition comprises that a time domain end position of the reserved resource is before a starting time domain position of the first candidate resource, and a time interval between the time domain end position of the reserved resource and the starting time domain position of the first candidate resource is smaller than or equal to a first interval.

It will be appreciated that this embodiment is not limited to the manner in which the resources are perceived, including full perception or partial perception, etc.

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

In one 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, a contention window value, a counter initial value, the priority of the second terminal, the priority of the first terminal and a subcarrier interval. Wherein the priority of the terminal may include at least one of: terminal priority, service priority, physical layer priority, COT priority, resource priority, CAPC, etc.

By implementing the method, the value of the first interval can be determined, so that the problem of LBT conflict caused by reserved resources before candidate resources is effectively solved.

In a possible implementation manner, the resource exclusion condition further includes that the first terminal and the second terminal do not meet a COT sharing condition, in other words, a candidate resource and a reserved resource are spaced less than or equal to a first interval, and when the COT sharing condition is not met, the candidate resource needs to be excluded, where the COT sharing condition includes at least one of: has a receiving-transmitting relationship; the Source ID/destination ID is the same; the priority of the first terminal is higher or not lower than the priority of the second terminal reserving resources.

By implementing the method, the resource exclusion condition is further limited, and excessive exclusion can be avoided.

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

In a ninth aspect, embodiments of the present application provide a method for resource exclusion, where the method may be performed by a second terminal, or may be performed by a component (e.g., a processor, a chip, or a chip system, etc.) of the second terminal. The resource exclusion method may include: and adjusting data transmission on the reserved resource by the second terminal under the condition that the time domain end position of the reserved resource of the second terminal is before the initial time domain position of the first candidate resource of the first terminal and the time interval difference between the time domain end position of the reserved resource and the initial time domain position of the first candidate resource is smaller than or equal to a first interval, wherein no data transmission of the second terminal exists on the first resource of the reserved resource after adjustment, and the first resource is positioned at the last of the reserved resource in the time domain. Illustratively, the adjusting data transmission may be: rate matching, or discarding the end of the corresponding transmission. Rate matching can be understood as taking up less resources, but still transmitting complete transport blocks (transport blocks), the code rate increases.

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

In one possible implementation manner, before the second terminal adjusts data transmission on the reserved resource, the method further includes:

and determining that the priority of the first terminal is higher than the priority of the second terminal.

By implementing the method, the timing of the second terminal for adjusting the data transmission is further limited, so that excessive adjustment is avoided.

In a possible implementation manner, 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 is determined according to at least one of LBT type, cap, CPE, contention window value, counter initial value N of the first terminal.

By implementing the method, it may be further defined that the second terminal relinquishes the time domain length of the reserved resource end transmission to balance between avoiding collisions and efficiently utilizing the resources.

In a tenth aspect, the present application provides a method for resource sharing, where the method may be performed by a first terminal, or may be performed by a component of the first terminal (e.g., a processor, a chip, or a system-on-chip, etc.). The resource sharing method may include:

The method comprises the steps that a first terminal receives COT sharing indication information, wherein the COT sharing indication information is used for indicating (or authorizing) the first terminal to use a first resource in a first COT for transmission;

and the time domain interval of the resources where the first resource and the COT share the indication information is larger than or equal to a first duration.

By implementing the method of the tenth aspect, the terminal needs to perform decoding, packet encoding, and the like from the time of receiving the COT shared instruction information to the time of requiring data to be transmitted, and thus a certain time is required. The present application thus defines that there is a minimum interval between the end position of sending the COT sharing indication information and the start position of the resource for sharing, which is required to satisfy the requirement that there is enough time for data processing.

In one possible implementation, the first time period is determined according to a (pre) configuration, and/or traffic priority (or physical layer priority), and/or subcarrier spacing, and/or UE capability.

An eleventh aspect of the present application provides a resource sharing method, including:

the method comprises the steps that a second terminal or network equipment sends COT sharing indication information, wherein the COT sharing indication information is used for indicating (or authorizing) a first terminal to use a first resource in a first COT for transmission;

In a twelfth aspect, embodiments of the present application provide a communications apparatus configured to perform the method in any possible implementation manner of the first to eleventh aspects. The communication device comprises a unit with means for performing the method in any of the possible implementations of the first to eleventh aspects.

The communication device may include a transceiver unit and a processing unit.

In a thirteenth aspect, embodiments of the present application provide a communication device, which includes a processor configured to perform the method in any possible implementation manner of the first aspect to the eighth aspect. Alternatively, the processor is configured to execute a program stored in the memory, and when the program is executed, the method in any possible implementation manner of the first aspect to the eleventh aspect is executed.

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

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

In the embodiment of the present application, the processor and the memory may also be integrated in one device, i.e. the processor and the memory may also be integrated together.

In one possible implementation, the communication device further comprises a transceiver for receiving signals or transmitting signals.

In a fourteenth aspect, embodiments of the present application provide a communication device comprising logic circuitry and an interface, the logic circuitry and the interface coupled; the interface is used for receiving information, and the logic circuit is used for executing processing operation.

It will be appreciated that the specific description of the fourteenth aspect may refer to any possible implementation of 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 for storing a computer program which, when run on a computer, causes the method shown in any of the possible implementations of the first to eleventh aspects described above to be performed.

In a sixteenth aspect, embodiments of the present application provide a computer program product comprising a computer program or computer code which, when run on a computer, causes the method shown in any of the possible implementations of the first to eleventh aspects described above to be performed.

In a seventeenth aspect, embodiments of the present application provide a computer program which, when run on a computer, performs the method shown in any of the possible implementations of the first to eleventh aspects.

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

The technical effects of the twelfth aspect to the eighteenth aspect described above may refer to the technical effects of the first aspect to the eleventh aspect or advantageous effects in the method embodiments shown below, and the description thereof will not be repeated here.

Drawings

Fig. 1 is a schematic diagram of resource reservation according to an embodiment of the present application;

FIG. 2a is a schematic diagram of a communication system provided in an embodiment of the present application;

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

FIG. 3 is a schematic flow chart of a method for resource elimination according to an embodiment of the present disclosure;

FIG. 4a is a schematic diagram of a candidate resource set according to an embodiment of the present application;

FIG. 4b is a schematic diagram of a candidate resource set provided in an embodiment of the present application;

FIG. 4c is a schematic diagram of a candidate resource set according to an embodiment of the present application;

FIG. 4d is a schematic diagram of a difference in positions of two candidate resources in the time domain according to an embodiment of the present application;

FIG. 4e is a schematic diagram of a difference in locations of two candidate resources in the frequency domain according to an embodiment of the present application;

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

FIG. 6a is a schematic diagram of a resource conflict provided in an embodiment of the present application;

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

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

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

fig. 7a is a schematic diagram of collision between a COT and a reserved resource according to an embodiment of the present application;

fig. 7b is a schematic diagram of collision between a COT and a reserved resource according to an embodiment of the present application;

FIG. 8 is a flowchart of another method for resource exclusion according to an embodiment of the present disclosure;

FIG. 9a is a schematic diagram of reserved resources according to an embodiment of the present application;

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

FIG. 10 is a flow chart of another method for resource elimination provided in an embodiment of the present application;

FIG. 11 is a flowchart of another method for resource exclusion according to an embodiment of the present disclosure;

FIG. 12a is a schematic diagram of LBT collision provided in an embodiment of the present application;

FIG. 12b is a schematic illustration of candidate resource exclusion provided by an embodiment of the present application;

FIG. 12c is a schematic illustration of an LBT provided in an embodiment of the present application;

FIG. 13 is a flow chart of another method for resource elimination provided in an embodiment of the present application;

FIG. 14 is a flow chart of another method for resource exclusion provided by an embodiment of the present application;

FIG. 15 is a schematic diagram of LBT collision provided in an embodiment of the present application;

FIG. 16 is a flow chart of another method for resource exclusion provided by an embodiment of the present application;

fig. 17 is a schematic flow chart of a resource sharing method according to an embodiment of the present application;

fig. 18 to 20 are schematic structural diagrams of a communication device according to an embodiment of the present application.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the present application more apparent, the present application will be further described with reference to the accompanying drawings.

The terms "first" and "second" and the like in the description, claims and drawings of the present application are used for distinguishing between different objects and not for describing a particular sequential order. Furthermore, the terms "comprising," "including," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion. Such as a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to the list of steps or elements but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

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 such phrases 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 of skill in the art will explicitly and implicitly understand that the embodiments described herein may be combined with other embodiments.

In the present application, "at least one (item)" means one or more, "a plurality" means two or more, and "at least two (items)" means two or three or more, and/or "for describing an association relationship of an association object, three kinds of relationships may exist, for example," a and/or B "may represent: only a, only B and both a and B are present, wherein a, B may be singular or plural. The character "/" generally indicates that the context-dependent object is an "or" relationship. "at least one of (a) or a similar expression thereof means any combination of these items. For example, at least one (one) of a, b or c may represent: a, b, c, "a and b", "a and c", "b and c", or "a and b and c".

Before describing the methods of the present application in detail, some concepts related to the present application will be briefly described.

1. Listen before talk (Listen before talk, LBT)

In unlicensed spectrum, devices need to perform a channel access procedure, i.e., LBT, before transmitting. LBT is mainly to determine whether a channel is idle through channel detection, and if LBT is successful, that is, the channel is idle, a device can access the channel and transmit. If the channel is occupied, i.e. LBT will fail, no transmission can take place.

2. Channel occupancy time (channel occupancy time, COT)

The COT refers to a COT that can be initialized after devices such as an evolved Node B (eNB)/a new generation base station (generation Node B, gNB)/User Equipment (UE) perform a channel access procedure, and the time length is COT. The channel occupation time may be shared for transmission between enbs/gnbs/UEs(s).

3. COT sharing

COT sharing, i.e. channel occupation time sharing. As described above, after the device performs the channel access procedure and initializes the COT, the resources that the device does not need to occupy may be shared with other devices, which may be referred to as other devices that are shared, and the device performing the channel access procedure and initializing the COT is referred to as the device. In some regulations, other devices that are required to be shared are required to have a transceiving relationship with the current device. For example, if other devices transmit unicast traffic, the receiving device should be the present device; if other devices transmit multicast traffic, the receiving device should include the device. Other devices need to first perform a channel access procedure before transmitting using the COT.

4. Channel access type

The channel access types can be divided into LBT type 1 and type 2A, type 2B, type 2C, SCSt (short control signaling transmission), and the access difficulty is reduced in sequence.

The longest time that the detection channel is idle is needed before the LBT type 1 is successfully accessed, and the least easy satisfaction is achieved. The general procedure includes initializing a counter N (i.e., counter initial value N) according to channel access priority (Channel access priority class, CAPC) after performing a channel detection of once idle, subtracting 1 from N every 9us channel detection after that until n=0, and further performing a 9us channel detection of once idle, and considering that the channel access is successful. After successful channel access, a COT of a certain length may be initialized, which may be shared for transmission to other devices. After completing one transmission in the COT, sharing to other devices, if the interval between the last transmission and the previous transmission is 25us/16 us/not more than 16us, respectively accessing type 2A/2B/2C, otherwise, accessing type 1 is needed.

LBT type 2A, total length 25us channel access procedure.

LBT type 2B, total length 16us channel access procedure.

LBT type 2C uses the channel directly for transmission without performing channel detection, but the total duration of transmission does not exceed 584us.

SCSt, without performing channel detection, directly uses the channel for transmission, but needs to meet the following requirements:

2.4GHz band: the duty cycle of SCST in 50ms is not more than 10%;

on the 5GHz/6GHz frequency band: the SCST in 50ms is not more than 50 and the total duration is not more than 2.5ms;

on the 60GHz frequency band: the total duration of SCST in 100ms is not more than 10ms.

5. Resource selection and resource reservation:

the NR V2X is divided into two modes, mode1 and Mode2, where a base station in Mode1 may be responsible for the work of resource scheduling, and Mode2 assumes that there is no base station, so that UE needs to perform autonomous resource selection for transmission according to a certain rule. Because the sidelink is a distributed system, when the UE performs resource selection, a resource exclusion mechanism is introduced in order to avoid collision among transmission resources selected by a plurality of UEs. Briefly, the UE listens to SCI of other UEs in the sensing window, and excludes resources exceeding the RSRP threshold from the resource selection window according to resources reserved by other UEs indicated by SCI. The candidate resource set is thus determined from the resource selection window and reported to the medium access control (Medium Access Control, MAC) layer, which selects the resources that are ultimately used for transmission. R16 and R17 support full sending and partial sending, and the like, and have certain differences in the range of a sensing window and a selection window and the determination of the number of candidate resources. The following takes full sending as an example:

Step 1: and determining a candidate resource selection window, wherein the number of candidate resources of the total time slot granularity single-slot is M.

Step 2: determining a sensing window, based on the decoded physical sidelink control channel (physical sidelink control channel, PSCCH) and the measured reference signal received power (reference signal received power, RSRP) in the time slots contained in the sensing window, performing the steps of:

step 3: the RSRP threshold is determined based on the higher layer parameters.

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

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

A. time slots not monitored in step 2

B arbitrary period value allowed for higher layer parameters, in time slotSCI 1-a is received and Resource reservation period configures the period value and indicates all subchannels in the time slot that satisfy step 6 condition C.

Step 5a: if the number of resources in the candidate set of resources is less than x×m (X higher layer parameter indication), then the resources in the candidate set SA are initialized to all the resources in step 4.

Step 6: candidate resources satisfying all of the following conditions are excluded from the candidate resource set:

a) UE in slotSCI 1-A is received, and Resource reservation period (if present), and Priority therein respectively indicate P _{rsvp_RX} And prio _RX Is a value of (2);

b) RSRP measurement for received SCI 1-a is above a threshold;

c) Whether the reserved resources conflict with other reserved resources of the UE is judged, as shown in fig. 1, which is a resource reservation diagram, and whether the reserved resources of the UE1 and the UE2 conflict with the candidate resources in the candidate resource set is needed to be judged if the reserved resources fall in the resource selection window. The SCI indicates reservation of resources that may be used by itself in the future, and the resource reservation is divided into two types, i.e., intra-period reservation and periodic reservation, which are used for possible future transmission (e.g., retransmission) and periodic traffic transmission, respectively.

Step 7: if the number of resources in the candidate resource set is less than x×m (X higher layer parameter indication), then for each priority the RSRP threshold value is increased by 3dB and step 4 is performed.

And the UE reports the final candidate resource set to a higher layer.

Alternatively, in some embodiments, the step 7 may be performed completely, and the step 6 may be performed.

The method and the device can be applied to communication systems such as cellular communication systems, internet of vehicles, terminal direct communication (side-link communication), wiFi and the like. Cellular communication systems may include, but are not limited to, long term evolution (long term evolution, LTE) systems, universal mobile telecommunications system (universal mobile telecommunication system, UMTS), fifth generation (5th generation,5G) systems, new Radio (NR), and other new systems that emerge as technology evolves, and so on.

As shown in fig. 2a, which is a schematic architecture diagram of a communication system provided in the embodiment of the present application, as shown in fig. 2a, the communication system 100 may include a first terminal and a second terminal, where the first terminal and the second terminal communicate through a side link, it is understood that the side link communication performed by two terminals in fig. 2a is only an example, and the number of terminals included in the communication system 100 may not be limited, and the terminals may communicate through the side link.

As shown in fig. 2b, the architecture diagram of another communication system provided in the embodiment of the present application, as shown in fig. 2b, the communication system 200 may include a network device, a first terminal and a second terminal, where the first terminal sends information to the network device through an uplink, the network device sends information to the first terminal through a downlink, and the first terminal and the second terminal communicate through a side link. Similarly, the second terminal may also send information to the network device via the uplink, and the network device may send information to the second terminal via the downlink. The first terminal and the second terminal may be within a coverage area of the network device, or one of the first terminal and the second terminal may be within the coverage area of the network device, while the other terminal is not within the coverage area of the network device, or neither the first terminal nor the second terminal is within the coverage area of the network device. It will be appreciated that in fig. 2b, where the communication system comprises one network device and two terminals, by way of example only, the number of terminals and/or the number of network devices included in the communication system 200 may not be limited. Terminals located within the coverage area of the network device may communicate side-link with terminals located outside the coverage area of the network.

The terminal in the embodiment of the application is a device with a wireless receiving and transmitting function. A terminal may be referred to as a User Equipment (UE), an access terminal, a subscriber unit (subscriber unit), a subscriber station, a mobile station, a remote terminal, a mobile device, a user terminal, a user agent, a user equipment, or the like. In one possible implementation, the terminal may be deployed on land, including indoors or outdoors, hand-held or vehicle-mounted; can also be deployed on the water surface (such as a ship, etc.). In one possible implementation manner, the terminal may be a handheld device, a vehicle-mounted device, a wearable device (such as smart glasses and a wrist watch) with a wireless communication function, a sensor, a terminal in the internet of things, a terminal in the internet of vehicles, an unmanned aerial vehicle, a fifth generation (5th generation,5G) network, an information processing device, a display device, an AR/VR/MR device, and a terminal device in any form in a future network, which is not limited in this embodiment of the present application. Alternatively, the terminal in the embodiment of the present application may be a Road Side Unit (RSU). The terminal in this embodiment of the present application may be a vehicle, or may be an On Board Unit (OBU) or an on board module, or may be a chip or a System On Chip (SOC).

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

It may be appreciated that the terminal shown in the embodiments of the present application may also be a device in the internet of things (internet of things, ioT), etc. The IoT network may include, for example, an internet of vehicles. The communication modes in the internet of vehicles system are generally called as vehicle to other devices (V2X, X may represent anything), for example, the V2X may include: vehicle-to-vehicle (vehicle to vehicle, V2V) communication, vehicle-to-infrastructure (vehicle to infrastructure, V2I) communication, vehicle-to-pedestrian communication (vehicle to pedestrian, V2P) or vehicle-to-network (vehicle to network, V2N) communication, etc.

The network equipment in the embodiment of the application can provide wireless access service for the terminal, schedule wireless resources for the accessed terminal, provide reliable wireless transmission protocol and data encryption protocol, and the like. It will be appreciated that in systems with different radio access technologies, the names of devices with network device functions may vary, and are not shown in one-to-one form of this application.

By way of example, the network devices of the present application may include base stations, transmission and reception points (transmission reception point, TRP), customer-end devices (CPE), routers, network access devices, and the like. It will be appreciated that the names of the network devices are different in different communication systems, for example, the network devices may be a legacy macro Base station eNB (evolved node B) in a legacy UMTS/LTE (Universal Mobile Telecommunications System, universal mobile telecommunications system/Long Term Evolution, long term evolution) wireless communication system, a micro Base station eNB in a HetNet (Heterogeneous Network ) scenario, a baseband processing Unit BBU (Base Band Unit) and a radio frequency Unit RRU (Remote Radio Unit ) in a distributed Base station scenario, a baseband pool BBU pool and a radio frequency Unit RRU in a CRAN (Cloud Radio Access Netowrk, cloud radio access network) scenario, and a gNB in a future wireless communication system.

It should be noted that, the network architecture and the service scenario described in the embodiments of the present application are for more clearly describing the technical solution of the embodiments of the present application, and do not constitute a limitation on the technical solution provided in the embodiments of the present application, and those skilled in the art can know that, with the evolution of the network architecture and the appearance of the new service scenario, the technical solution provided in the embodiments of the present application is equally applicable to similar technical problems.

It should be noted that each technical solution (or referred to as each embodiment) of the present application may be implemented independently or may be implemented in combination based on some intrinsic relation. The present application is not limited thereto. And various terms and definitions between the various embodiments may be referenced to one another. In each embodiment of the present application, different implementations may also be implemented in combination or separately.

It can be appreciated that, for convenience of description, the resources in the subsequent embodiments of the present application may be understood as time domain resources and/or frequency domain resources, which are not described in detail herein. Overlapping as described herein may refer to time domain and/or frequency domain overlapping. In addition, the overlapping of the embodiments of the present application may include partial overlapping or total overlapping, and is not limited.

The length of the COT referred to in this application may be referred to as a first time length, which may be, for example, the length of the COT or a certain length not greater than the maximum value of the COT length corresponding to the CAPC. The present application does not limit that the resources reserved for the terminal to transmit themselves must be located at the start position of the COT, and the following embodiments are only exemplified by the resources reserved for the terminal to transmit themselves being located at the start position of the COT. For example, the resources reserved for the terminal's own transmissions may be located in the middle of the COT or at the end. And multiple resources may be reserved, which may be located at different locations of the COT, and may be contiguous or non-contiguous in the time domain.

It should be noted that, when determining the reserved resource and/or performing resource exclusion, the default exclusion condition includes that the RSRP of the PSCCH and/or the corresponding PSSCH where the resource indication information of the reserved resource is located is greater than a threshold, in other words, the reserved resource meets the requirement that the RSRP required in the resource exclusion condition is greater than the threshold. That is, the RSRP of the PSCCH and/or the corresponding PSSCH where the resource indication information of the reserved resource is located is greater than the threshold value may be added as an exclusion condition to the corresponding exclusion condition. Optionally, the default resource exclusion condition includes that the priorities of the terminal reserving the resource and the terminal performing the resource exclusion satisfy a condition, in other words, the priorities of the terminal reserving the resource and the terminal performing the resource exclusion satisfy a priority condition required in the resource exclusion condition. That is, the priority satisfying condition of the terminal reserving resources and the terminal performing the resource exclusion may be added as the exclusion condition to the corresponding exclusion condition.

Fig. 3 is a flow chart of a resource exclusion method according to an embodiment of the present application. Fig. 2a to 2b may be system architecture diagrams to which the resource exclusion method is applied. As shown in fig. 3, the method may include: 101-103, wherein the order of execution of the steps is not limited in this embodiment. As shown, the resource exclusion method of the embodiment of the present application includes, but is not limited to, the following steps:

101, the first terminal determines a candidate set of resources.

In some embodiments, one or more candidate resources are included in the candidate resource set. Wherein, one candidate resource may include only the first resource for the first terminal to transmit, 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 for the first terminal to transmit; if the candidate resource includes the second resource, it means that the candidate resource may be used for sharing for transmission to other terminals, or potentially for sharing for transmission to other terminals (i.e. may or may not be shared out at last, and is not limited).

The second resource may be a resource other than the first resource in the first COT of the first terminal or a resource for sharing in the first COT; alternatively, one candidate resource may include only the second resource. Among other things, resources within the first COT other than the first resource may be understood in many ways, as exemplified 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 any resources in the first COT that do not overlap with the first resource in the time domain. For another example, the resources other than the first resource in the first COT may be resources other than the time domain resources of the first resource, and the restricted frequency domain is located at the same position as the frequency domain of the first resource, in other words, the resources other than the first resource may refer to any resources in the first COT that do not overlap with the first resource in the time domain, but have the same frequency domain as the first resource. 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 any resources in the first COT that do not overlap with the first resource in the time-frequency domain. It will be appreciated that the resources used for sharing in the first COT may be referred to by one name, or any other name, and the resources used for sharing in the first COT refer to resources that are potentially or may be shared to other terminals in the first COT, but do not limit whether sharing will be performed in the end. It should be noted that the granularity of the resources is not limited, and may be single-slot or other granularity.

It is understood that the first COT of the first terminal may be understood as a COT initialized with the first resource for transmission by the first terminal, in other words, the first terminal initializes the first COT by performing an LBT before the first COT if the LBT is successful. Initializing a COT may also be understood as creating a COT, among other things.

In one possible implementation, a candidate resource may occupy a basic time unit in the time domain, which may be understood as the granularity of the candidate resource. For example, the base time unit may include any of the following: a radio frame, subframe, slot, mini-slot, symbol, second, millisecond, microsecond, etc., if a candidate resource occupies a slot in the time domain, it can be understood that the granularity of the candidate resource is single-slot granularity. As shown in fig. 4a, a schematic diagram of a candidate resource set is provided in an embodiment of the present application, where each candidate resource (or called resource) included in the candidate resource set occupies 1 time slot in the time domain. The frequency domain of the candidate resource is not limited, and may be any X continuous or discontinuous RBs or interlaces or sub-channels or other frequency domain resource granularities. X depends on requirements or configuration or higher layer signaling or base station indication, etc.

In some embodiments, if the granularity of the resources in the candidate resource set is the basic time unit, one candidate resource may include only the first resource for the first terminal to transmit. If the first terminal needs to obtain the resource for sharing, the first COT may be initialized with the first resource, so as to obtain the resource for sharing by the first terminal 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 for transmission by the first terminal.

In some embodiments, if the granularity of the resources in the candidate resource set is a basic time unit, and the resources in the candidate resource set not only include the first resources used for the transmission of the first terminal but also include the second resources shared by the first terminal, one candidate resource may be understood to include a plurality of resources, where the granularity of each resource is the basic time unit, that is, one resource occupies one basic time unit in the time domain, and the plurality of resources include the first resources and the second resources, and the plurality of resources may be a plurality of resources selected by taking the basic time unit as the granularity. Continuing with fig. 4a as an example, resources a, B may include resources for transmission by the first terminal (e.g., may be resources a), while other resources B may be selected resources for sharing, and a candidate resource may be understood to include resources a, B, in this embodiment resources that select the entire COT with a basic time unit granularity.

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

In another possible implementation, one candidate resource may occupy a length of one COT in the time domain, and it is understood that the length of one COT occupied by the one candidate resource in the time domain may be understood that the one candidate resource includes the first resource and the second resource. The COT length occupied by one candidate resource in the time domain may be determined according to the CAPC, or may be determined by the first terminal device, but the constraint of the maximum COT length corresponding to the CAPC needs to be satisfied. The frequency domain of the candidate resource is not limited, and may be any X continuous or discontinuous RBs or interlaces or sub-channels or other frequency domain resource granularities. X depends on requirements or configuration or higher layer signaling or base station indication, etc.

As shown in fig. 4b and fig. 4c, a schematic diagram of another candidate resource set provided in an embodiment of the present application, where each candidate resource included in the candidate resource set occupies 1 COT in a time domain. It will be appreciated that in this embodiment, one candidate resource includes a first resource and a second resource.

In one possible implementation, there is no overlap between the COTs occupied by each candidate resource in the time domain, as shown in FIG. 4 b. It is understood that the COTs occupied by the candidate resources may be separated by a certain gap, that is, a certain gap between the ending position of the previous COT and the starting position of the next COT.

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

In some embodiments, the difference in the locations of 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, which may include, but is not limited to, radio frames, subframes, slots, mini-slots, symbols, seconds, milliseconds, microseconds, and the like. The position difference of two candidate resources in the time domain may be understood as a start position difference or an end position difference of two candidate resources, and the two candidate resources may be understood as two candidate resources corresponding to two adjacent COTs in the time domain. As shown in fig. 4d, a schematic diagram of a position difference of two candidate resources in the time domain, that is, a starting position difference of the two candidate resources, is provided in the embodiment of the present application. Note that, if n=1, it is understood that any resource having a continuous time domain length of COT length can be considered as a candidate resource. For example any set of X contiguous slots correspond to one candidate resource (COT).

In some embodiments, the difference in the locations of two candidate resources in the candidate resource set in the frequency domain 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, subchannels, RB set, subcarriers, hz, kHz, MHz, and the like. The difference in the positions of two candidate resources in the frequency domain may be understood as the difference in the starting positions or the ending positions of the two candidate resources in the frequency domain, and the two candidate resources may be understood as two candidate resources corresponding to two adjacent COTs in the time domain. As shown in fig. 4e, a schematic diagram of a position difference of two candidate resources in the frequency domain is provided in the embodiment of the present application, that is, a frequency domain starting position difference of the two candidate resources. The two candidate resources may be understood as resources that are one or more consecutive RBs or interlaces or sub-channels in the frequency domain. For example any set of T contiguous sub-channel correspond to one candidate resource.

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

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

The position difference requirement on the time domain and the position difference requirement on the frequency domain can be combined or used independently, that is, the time domain needs to meet the position difference requirement, but the frequency domain does not limit, or the frequency domain needs to meet the position difference requirement of the frequency domain, and the time domain does not limit, or both the time domain and the frequency domain need to meet the position difference requirement.

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

In some embodiments, the first terminal may determine the reserved resource 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 third resources or fourth resources, where the third resources may be resources used for transmission by the second terminal in the second COT of the second terminal, and the fourth resources may include resources other than the third resources in the second COT or resources used for sharing in the second COT, that is, resources shared to other terminals. The resources used for sharing in the second COT may include some or all of the resources in the second COT except the third resource, which is not limited in this application. Among other things, resources within the second COT other than the third resource may be understood in many ways, as exemplified below. For example, the resources other than the third resource in the second COT 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 any resources in the second COT that do not overlap with the third resource in the time domain. For another example, the resources other than the third resource in the second COT may be resources other than the time domain resources of the third resource, and the restricted frequency domain is located at the same position as the frequency domain of the third resource, in other words, the resources other than the third resource may refer to any resources in the second COT that do not overlap with the third resource in the time domain, but have the same frequency domain as the third resource. For another example, the resources other than the third resource 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 resource may refer to any resources in the second COT that do not overlap with the third resource in the time-frequency domain. It will be appreciated that the resources used for sharing in the second COT may be referred to by one name, or any other name, and the resources used for sharing in the first COT may be resources that are potentially or may be shared to other terminals in the second COT, but are not limited to whether sharing will be performed in the end. It should be noted that the granularity of the resources is not limited, and may be single-slot or other granularity.

The second COT of the second terminal may be understood as a COT initialized with the third resource used for the transmission by the second terminal, in other words, the second terminal performs LBT before the second COT, and may be initialized if the LBT is successful. Initializing a COT may also be understood as creating a COT, among other things.

It may be appreciated that the third resource and the fourth resource in the embodiments of the present application may be in the form of 2 (or more) resources, or 2 (or more) groups of resources, or 2 (or more) sets of resources, which are not limited herein. If the third resource includes a plurality of resources, each of the resources may be continuous or discontinuous, which is not limited in this application. Similarly, if the fourth resource includes a plurality of resources, each of the resources may be continuous or discontinuous.

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

Resources for the second terminal to transmit itself;

resources of a second COT;

a time domain starting position of the second COT;

a time domain end position of the second COT;

a time domain length of the second COT;

the structure information of the second COT, wherein the structure information of the second COT may include a terminal identifier or a service related identifier (Source ID and/or destination ID) occupying the second COT; time and/or frequency domain resource allocation (which may be a separate resource allocation for each terminal or each service, or bitmap, pattern, etc.). In some embodiments, the structure information of the COT may also be referred to as COT sharing indication information, COT sharing information, etc., and the specific structure may be described with reference to the related description of the structure information of the COT in the embodiment of fig. 10, which is not repeated.

Illustratively, the frequency domain resources within the second COT indicated by the resource indication information may be contiguous or frequency domain interleaved (interleaved).

For example, the resources within 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 at the same frequency domain location or different frequency domain locations from the third resource used for the second terminal to transmit itself. For example, both time and frequency domain resources of the third and fourth resources need to be indicated. Alternatively, if located at the same frequency domain location, the frequency domain resource need only be indicated once, and no repeated indication is required. For example, time-domain and frequency-domain resources of the third resource are indicated, and only time-domain resources of the fourth resource are indicated, the frequency-domain location of the fourth resource being identical to the third resource.

103, the first terminal excludes a first candidate resource from the candidate resource set, wherein a resource exclusion condition is met between the first candidate resource and the reserved resource, the resource exclusion condition comprises a first condition or a second condition, and the first condition comprises the first resource and the reserved resource conflict; the second condition includes at least one of the first resource or the second resource colliding with the reserved resource.

Since the candidate resources in the candidate set may comprise at least one of the first resource or the second resource, the first candidate resource may comprise at least one of the first resource or the second resource, respectively; the first resource is a resource used for the first terminal to transmit in the first COT of the first terminal, and the second resource comprises a resource except the first resource in the first COT or a resource used for sharing in the first COT. The granularity of the resources in the candidate resource set may be specifically referred to the description of step 101, and will not be described herein.

The first terminal excludes all first candidate resources meeting the resource exclusion condition from the candidate resource set, where the resource exclusion condition may include the first condition or the second condition, and it may be understood that the resource exclusion condition may include other conditions besides the first condition or the second condition, for example, RSRP of a physical sidelink control channel (physical sidelink control channel, PSCCH) or a physical sidelink data channel (physical sidelink shared channel, pscsch) where resource indication information associated with the reserved resource is located is greater than a threshold, and/or priority of the second terminal and priority of the first terminal meet the condition, where, for convenience of description, the default candidate resource meets other conditions in the resource exclusion condition, and it needs to be noted that the other conditions are equally applicable to all embodiments of the present application.

The first condition includes that a first resource in the first candidate resource collides with the reserved resource, in other words, whether the first resource collides with the reserved resource is judged, whether the second resource collides with the reserved resource is not concerned, and even if the second resource collides with the reserved resource, the first condition is not satisfied, namely the candidate resource is not excluded. As shown in fig. 5, an exemplary diagram of resource exclusion is provided in the embodiment of the present application, where resource 1 is a first resource used for transmission by a first terminal, and resource 2 is a resource used for sharing in a first COT of the first terminal, and even if a reserved resource collides with resource 2, if the resource exclusion condition includes a first condition, the candidate resource is not excluded.

The second condition includes that at least one of the first resource or the second resource collides with the reserved resource, in other words, the first resource and the second resource as a whole, and the second condition is satisfied as long as the whole collides with the reserved resource (it may be that the first resource collides with the reserved resource, it may also be that the second resource collides with the reserved resource, or it may also be that both the first resource and the second resource collide with the reserved resource), and the candidate resource is excluded. Continuing with the example shown in fig. 5, if the resource exclusion condition includes the second condition, the second condition is satisfied because resource 2 collides with the reserved resource, and thus the candidate resource needs to be excluded.

It should be noted that the above-mentioned collision may be overlapping of time domain resources and/or overlapping of frequency domain resources. In some embodiments, candidate resources that overlap with the reserved resources in the time domain may be preferentially excluded, in other words, candidate resources that do not overlap with the reserved resources in the time domain are preferentially selected. The overlapping of time-frequency domains is taken as an example in the drawings of the application. Further, the overlap may be a partial overlap or a full overlap.

As can be seen from the above examples, in case the resource exclusion conditions include different conditions (i.e., the first condition or the second condition), the result of the resource exclusion may be different, for example, in the example shown in fig. 5, if the resource exclusion conditions include the first condition, the candidate resource does not need to be excluded, and if the resource exclusion conditions include the second condition, the candidate resource needs to be excluded. The resource exclusion condition in the embodiment of the present application may include the first condition or the second condition may be determined based on at least one of:

1. A comparison result of the priority of the first terminal and a second priority threshold;

specifically, the priority of the first terminal may be at least one of a service priority, a physical layer priority, a resource priority (resource granularity is not limited; the resource may refer to a time domain and/or frequency domain resource), a priority of the first terminal, and a caps.

2. A priority comparison result of the resource priority in the first COT and the reserved resource 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, the first resource used for the first terminal transmission in the first COT, or the resource used for sharing in the first COT, or other resources except for the resource used for the first terminal transmission in the first COT, for convenience of description, the resource used for sharing in the first COT, or other resources except for the resource used for the first terminal transmission in the first COT, will be referred to as the second resource, that is, the result of comparing the priority of the second resource with the priority of the reserved resource. Optionally, the resource priority may also refer to a priority of the first COT. The reserved resources may refer to all resources or any one or more resources of the reserved resources of the second terminal. For example, it may be a resource for the second terminal transmission, or a resource for sharing, or other resources than the resource for the second terminal transmission. Optionally, the priority of the reserved resource may also refer to a priority of the COT of the second terminal. The resource priority in the first COT may be understood as a priority of a first resource used for transmission by the first terminal in the first COT, or a priority of a second resource used for sharing in the first COT of the first terminal, or a resource priority of the first COT of the first terminal, or a highest or lowest resource priority in the first COT. The priority of the reserved resource of the second terminal may be understood as the priority of the resource for transmission by the second terminal in the second COT of the second terminal, or the priority of the resource for sharing in the second COT of the second terminal, or the priority of the resource of the second COT of the second terminal, or the highest or lowest priority of the resources within the second COT of the second terminal. The resource priority may refer to at least one of a service priority, a physical layer priority, a priority of the UE, and a caps, or may be determined according to at least one of a service priority, a physical layer priority, a priority of the UE, and a caps.

In one implementation, the resource exclusion condition includes a second condition if the priority of resources within the first COT is greater than or equal to the priority of reserved resources of the second terminal. Thereby ensuring that the high priority or more important first COT is not interrupted. The resource exclusion condition includes a first condition if the priority of resources within the first COT is less than the priority of reserved resources of the second terminal.

In another implementation, the resource exclusion condition may also include the first condition if the priority of the resource within the COT is greater than or equal to the priority of the reserved resource of the second terminal. Because of the "low priority avoidance high priority", even if the second resource collides with the reserved resource, the second terminal may avoid due to the higher priority of the resource in the first COT, so that it will not transmit on the reserved resource, and of course, the first COT will not be interrupted. The resource exclusion condition includes a second condition if the priority of the resource within the first COT is less than the priority of the reserved resource of the second terminal.

3. Demand information whether the second resource is shared;

specifically, if the second resource is not shared to other terminals, the resource exclusion condition includes the first condition. And eliminating the candidate resources for the first resource conflict for the first terminal transmission. This avoids overdriving. The resource exclusion condition includes a second condition if the second terminal is shared to other terminals. To avoid interruption of the first COT. The requirement information whether the second terminal is shared may be determined based on base station scheduling or indication, or sharing request information sent by other terminals, or resource reservation information of other terminals, or implementation of the first terminal, or (pre) configuration. For example, if the other terminal sends the sharing request information for requesting to share the first COT, it is considered that the second resource may be shared, or if the resource reservation information sent by the other terminal 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 the LBT, the resource exclusion condition needs to include the second condition because the first terminal has the right to share the second resource. The resource exclusion condition may include a first condition if the first COT is not initialized by the first terminal through the LBT. As the first terminal does not have the right to share the second resource.

The resource exclusion condition includes a first condition if there are other terminals that would share the COT to the first terminal. Since the first terminal does not initialize the first COT, the first terminal does not have the right to share the second resource. The resource exclusion condition may include a second condition if no other terminal shares the COT to the first terminal. Since the first terminal will initialize the first COT, the first terminal has the right to share the second resource. Whether the first terminal is a terminal that initiates the first COT or whether other terminals will share the COT to the first terminal may be determined according to at least one of implementation of the first terminal, indication information of the base station, COT sharing information or authorization information of the other terminals, reservation information of the other terminals, and whether the first terminal has sent a sharing request.

It should be noted that options 1-5 above may 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 to 5 and whether the first condition or the second condition is included is merely an example, and other choices are also possible, which is not limited in this application.

In addition, the candidate resource 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 may be decoupled from the resource exclusion condition, in other words, there may be a case where the candidate resource includes the first resource, 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. In the following, the first resource is illustrated as resource 1, the second resource is illustrated as resource 2, and the basic time unit is illustrated as a time slot, where it is understood that fig. 6 a-6 c and fig. 7a and fig. 7b are only exemplary, and other situations may be included, for example, the candidate resource includes the first resource and the second resource, the resource exclusion condition includes the first condition, and the application is not limited thereto.

In fig. 6 a-6 b, the candidate resources occupy one basic time unit in the time domain, for example, 1 slot is illustrated, i.e. the candidate resource granularity is single-slot granularity, the candidate resources are determined in single-slot granularity, and the candidate resources are only used for the transmission of the first terminal (i.e. the candidate resources only include resource 1), it being understood that in this case, the resources used for sharing by the first terminal by default refer to other resources within the COT starting from the first resource for self-transmission.

As shown in fig. 6a, the candidate resource may comprise resource 1 and the resource exclusion condition comprises a first condition. As shown in fig. 6a, if resource exclusion is performed only according to whether resource 1 collides with a reserved resource, resource 1 overlapping with the reserved resource is excluded.

As shown in fig. 6b, the candidate resource may comprise resource 1 and the resource exclusion condition comprises a second condition. If resource exclusion is performed according to whether resource 1 and/or resource 2 conflicts with a reserved resource, initializing a COT from the candidate resource, wherein the length of the first COT can be equal to the length of the COT initialized by the first terminal, and if any resource in the COT overlaps with the reserved resource, the candidate resource is excluded.

In fig. 6c, the candidate resources in the candidate resource set include resource 1 and resource 2, and the resource exclusion condition includes a second condition. As shown in fig. 6c, the candidate resources occupy 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, the candidate resources are determined by single-slot granularity, and the candidate resources in the candidate resource set can be used for the first terminal to transmit and share to other terminals. For example, the terminal selects 2 single-slot granularity candidate resources, wherein the 2 single-slot granularity candidate resources comprise a resource (resource 1) for self transmission and a shared resource (resource 2), and if the 2 single-slot granularity candidate resources have candidate resources which conflict with reserved resources, the 2 single-slot granularity candidate resources are excluded.

In fig. 6d, the candidate resources occupy 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, the candidate resources are determined by single-slot granularity, the candidate resources in the candidate resource set are not limited to resources for the first terminal to transmit or for sharing in the resource exclusion stage, if the candidate resources in the candidate resource set conflict with reserved resources, the candidate resources are excluded, the remaining candidate resources in the candidate resource set are referred to as candidate resources of the selected single-slot, the candidate resources are reported to a higher layer, one or some of the candidate resources of the selected single-slot are determined by the higher layer to transmit by the first terminal, and the other one or some candidate resources are used for sharing. In other words, in fig. 6d, for candidate resources in the candidate resource set, it is not limited whether to be used for the first terminal transmission or for sharing, but the last higher layer determines which resources to use for own transmission and which to use for sharing.

It will be appreciated that where the candidate resources include a first resource and a second resource, the granularity of the candidate resources may be the COT granularity, i.e. one candidate resource occupies one COT length in the time domain, and if the COT of the candidate resource conflicts with a reserved resource, the entire COT is excluded. Fig. 7 a-7 b are schematic diagrams illustrating collision with reserved resources under different COT arrangements. As in fig. 7 a-7 b, the granularity of the candidate resource is COT, and the resource exclusion is performed at the granularity of COT,

For example, as shown in fig. 7a, the cobs of the candidate resources are not overlapped with each other, and the non-overlapping refers to that the time domain is not overlapped (the frequency domain is not limited), the frequency domain is not overlapped (the time domain is not limited), or the time domain and the frequency domain are not overlapped. For example any set of X contiguous slots correspond to one candidate resource (COT). For example any set of T contiguous sub-channel correspond to one candidate resource, the description is equally applicable to other embodiments, such as fig. 7b. COTs of candidate resources overlapping with the reserved resource among COTs of the plurality of candidate resources are excluded. As shown in fig. 7a, if the COT of the candidate resource c collides with the reserved resource, the COT of the candidate resource c is excluded.

For another example, as shown in fig. 7b, the COTs of the plurality of candidate resources may be allowed to partially overlap, where the difference in position of the two candidate resources in the time domain and/or the difference in position in the frequency domain may refer to the description of the foregoing embodiments, which is not repeated herein. COTs of candidate resources overlapping with the reserved resources are excluded.

It will be appreciated that the various embodiments shown below are equally applicable with respect to the relevant description of steps 101-103.

In the embodiment of the application, when the resource is eliminated, different conditions are selected for the resource elimination under different conditions, and it is determined that only the first resources reserved for own transmission avoid reserved resources of other terminals, or the first COT of the first terminal avoid reserved resources of other terminal devices, so that requirements under different conditions are met, continuity of the COT of the first terminal is selectively ensured, system efficiency can be effectively improved, and excessive elimination and resource waste when no sharing requirements are avoided.

Fig. 8 is a flowchart of another resource exclusion method according to an embodiment of the present application. Fig. 2a to 2b may be system architecture diagrams to which the resource exclusion method is applied. As shown in fig. 8, the method may include: 201-203, wherein the order of execution of the steps is not limited, embodiments of the present application. As shown, the resource exclusion method of the embodiment of the present application includes, but is not limited to, the following steps:

the first terminal determines 201 a candidate set of resources.

The candidate set of resources may include a plurality of candidate resources, which may include a first resource for the first terminal to transmit, and/or a second resource for the first terminal to share (or a resource other than the first resource within the first COT referred to as the first terminal). In other words, the candidate resources include the first resource, which means that the candidate resources may be used for transmission by the first terminal; the candidate resource includes a second resource, which means that the candidate resource may be used for sharing for transmission to other terminals, or potentially for sharing for transmission to other terminals (i.e. may or may not be shared out at last, and is not limited).

202, the first terminal determines a reserved resource of the second terminal, where the reserved resource includes at least one of a third resource or a fourth resource, the third resource is a resource used for transmission by the second terminal in a second COT of the second terminal, and the fourth resource includes a resource except the third resource in the second COT or a resource used for sharing in the second COT.

In some embodiments, the third resource may be a resource used for transmission by the second terminal in the second COT of the second terminal, and the fourth resource may include a resource other than the third resource in the second COT or a resource used for sharing in the second COT or a resource potentially used for sharing in the second COT to transmit to other terminals (that may or may not be shared out at last, without limitation). The resources used for sharing in the second COT may include some or all of the resources in the second COT except the third resource, which is not limited in this application. As to the resources other than the third resource in the second COT, various understandings may be made, and specific reference may be made to the description of the foregoing embodiments, which are not repeated herein.

In some embodiments, the third resource and the fourth resource may be determined by the first terminal according to the resource indication information sent by the second terminal, and the description of the carrier of the resource indication information may refer to the description of the foregoing embodiments, which is not repeated herein. The resource indication information may also be other names, which is not limited in this application. In some embodiments, the indication information indicating the third resource may be referred to as 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:

resources for the second terminal to transmit itself;

resources (potentially) shared to other terminals within the second COT;

resources of a second COT;

a time domain starting position of the second COT;

a time domain end position of the second COT;

a time domain length of the second COT;

the structure information of the second COT, wherein the structure information of the second COT may include a terminal identifier or a service related identifier (UE ID, source ID, and/or destination ID) occupying the second COT; time and/or frequency domain resource allocation (which may be a separate resource allocation for each terminal or each service, or bitmap, pattern, etc.). In some embodiments, the structure information of the COT may also be referred to as COT sharing indication information, COT sharing information, and the like.

For example, the resources within 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 at the same frequency domain location or different frequency domain locations from the third resource used for the second terminal to transmit itself; if the frequency domain resources are located at the same frequency domain position, the frequency domain resources are only required to be indicated once, and repeated indication is not required. The same frequency domain location refers to using the same frequency domain resource.

It is understood that the third resource may comprise a plurality of resources, which may be contiguous or non-contiguous, and is not limited in this application. Similarly, the fourth resource may also include a plurality of resources, which may also be contiguous or non-contiguous.

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

As shown in fig. 9a, taking the second terminal as UE2, the third resource as resource 3, the fourth resource as resource 4, the second COT as COT2 as an example, the resources 3 and 4 indicated by the UE2 fall in a selection window, and when determining the reserved resource of the UE2, at least one of the resources 3 or 4 may be used as the reserved resource, so as to perform a resource exclusion process according to the reserved resource. In some embodiments, as shown in fig. 9b, if the resource 3 is excluded as a reserved resource, the terminal UE1 performing the resource exclusion may occupy the resource in the resource 4, for example, the priority of the traffic transmitted by the UE1 is higher, and then the resource in the resource 4 is occupied, taking the resource shared by the UE2 to the UE3 in fig. 9b as an example, since the UE3 does not transmit, the transmission gap between the UE4 and the UE2 is too large, which may cause interruption of the COT2 of the UE 3. But may in some cases lead to overdoop if the entire COT2 (i.e. resource 3 and resource 4) is reserved as resource. Thus, in an embodiment of the present application, it may be determined whether the reserved resources include the fourth resource according to at least one of:

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

In one possible implementation, the reserved resources do not include fourth resources if the first terminal is greater than or equal to the first priority threshold. Correspondingly, the first terminal may occupy the fourth resource, and the second terminal may avoid the first terminal during transmission due to the higher service priority of the first terminal, and the first terminal may also occupy the fourth resource, which allows to affect the second COT of the second terminal. The reserved resources include fourth resources if the traffic priority of the first terminal is less than the first priority threshold. Accordingly, the first terminal does not occupy the fourth resource, so that the continuity of the second COT of the second terminal is not affected.

In another possible implementation, if the priority of the first terminal is greater than or equal to the first priority threshold, the first terminal is considered to be unable to be interrupted by other terminals, and therefore, the reserved resources include fourth resources. Correspondingly, if the traffic priority of the first terminal is smaller than the first priority threshold, the reserved resources do not comprise reserved resources.

B. The priority of the first terminal is compared with the priority of the second terminal;

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

Specifically, if the priority of the first terminal is higher than the priority of the second terminal, the reserved resource may not include the fourth resource. Accordingly, the first terminal may occupy the fourth resource, and the priority of the first terminal is higher, so that the second terminal may avoid the first terminal during transmission, and the first terminal may also occupy the fourth resource, which allows to affect the second COT of the second terminal. If the priority of the first terminal is less than the traffic priority of the second terminal, the reserved resources include fourth resources. Accordingly, the first terminal does not occupy the fourth resource, so that the continuity of the second COT of the second terminal is not affected. In this way, it is ensured that the second COT of the second terminal is not affected when the priority of the second terminal is relatively high.

C. The method comprises the steps that a resource priority in a first COT of a first terminal is compared with a resource priority in a second COT of a second terminal, and the first COT comprises first candidate resources;

The resources in the COT may refer to all resources or any one or more resources in the COT. For example, the first resource used for the first terminal to transmit in the COT, or the resource used for sharing in the COT, or other resources except the resource used for the terminal to transmit itself in the COT may be used. Optionally, the resource priority may also refer to a priority of the COT. The resource priority within the COT may be understood as the priority of the resources in the COT for the terminal to transmit itself, or the priority of the resources in the COT for sharing, or the resource priority of the COT, or the highest or lowest resource priority within the COT. The resource priority may refer to at least one of a service priority, a physical layer priority, a priority of the UE, and a caps, or may be determined according to at least one of a service priority, a physical layer priority, a priority of the UE, and a caps.

In particular, the resource priority in the first COT may be equal to the CAPC that initiated the first COT, or the traffic priority of the transmission in the first COT, or the highest or lowest CAPC, or the highest or lowest traffic priority, of all transmissions in the first COT. The resource priority within the second COT may be equal to the CAPC that initiated the second COT, or the traffic priority of the transmission within the second COT, or the highest or lowest CAPC, or the highest or lowest traffic priority, of all transmissions within the second COT.

Specifically, if the resource priority in the first COT is higher than the resource priority in the second COT, the reserved resource may not include the fourth resource. Correspondingly, the first terminal may occupy the fourth resource, and the second terminal may avoid the first terminal during transmission due to the higher service priority of the first terminal, and the first terminal may also occupy the fourth resource, which allows to affect the second COT of the second terminal. If the resource priority within the first COT is less than the resource priority within the second COT, the reserved resources include fourth resources. Accordingly, the first terminal does not occupy the fourth resource, so that the continuity of the second COT of the second terminal is not affected. By the method, when the service priority of the second terminal is higher, the second COT of the second terminal is not affected.

the traffic priority of the fourth resource bearer may be understood as the traffic priority of the fourth resource transmission, or the priority of the highest priority traffic or the priority of the lowest priority traffic of the fourth resource transmission. The service priority of the first terminal may be understood as the priority of the service with the highest priority or the priority of the service with the lowest priority transmitted by the first terminal.

Specifically, if the service priority of the first terminal is higher than the service priority of the fourth resource bearer, the reserved resource may not include the fourth resource. Correspondingly, the first terminal may occupy the fourth resource, and the service carried on the fourth resource may avoid the first terminal because the service priority of the first terminal is higher, and the first terminal may also occupy the fourth resource, which allows to affect the second COT of the second terminal. And if the service priority of the first terminal is smaller than the service priority of the fourth resource bearer, reserving the resources comprises the fourth resource. Accordingly, the first terminal does not occupy the fourth resource, so that the continuity of the second COT of the second terminal is not affected. By the method, when the service priority carried by the fourth resource is higher, the second COT of the second terminal is not affected.

specifically, if the first terminal and the second terminal have a transceiving relationship, the reserved resource may not include the fourth resource. Accordingly, the first terminal may occupy the fourth resource, but since the first terminal and the second terminal satisfy the COT sharing condition (i.e. have a transceiving relationship), the second COT of the second terminal will not be interrupted. The reserved resources may include fourth resources if there is no transceiving relation between the first terminal and the second terminal. Accordingly, the first terminal does not occupy the fourth resource, so that the continuity of the second COT of the second terminal is not affected.

F. A remaining packet delay budget remaining PDB for the first terminal;

specifically, if the remaining PDB of the first terminal is smaller than the threshold, the reserved resource may not include the fourth resource. And if the remaining PDB of the first terminal is smaller than the threshold value, the first terminal service is considered to be urgent, namely the first terminal can occupy the fourth resource, so that the urgent service of the first terminal can be sent out in time.

G. The identification of the first terminal is compared with the identification of the second terminal to the Source ID and/or destination ID;

the Source ID and/or destination ID of the service of the first terminal may be specifically the Source ID and/or destination ID of the service transmitted by the second terminal. If the identification of the first terminal is the same as the identification of the second terminal, the reserved resource may not include the fourth resource. The first terminal and the second terminal have a transceiving relationship 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, so that the reserved resource may include a 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 different.

H. Congestion level information of the channel;

the congestion level information of the channel may be embodied as Channel Busy Ratio (CBR) or channel occupancy ratio (CR) compared to a threshold value. May refer to CBR or CR of a particular priority or to the sum of CBR or CR of each priority service. If the channel is relatively congested, i.e. 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 comprise fourth resources. The reserved resources may include fourth resources if the channel is relatively idle, i.e., CBR or CR is less than (or equal to) a threshold, or the sum of CBR or CR is less than (or equal to) a threshold.

I. (pre) configured information;

it is particularly optional that whether the reserved resources comprise fourth resources may be configured by (pre) configured information. The (pre) configuration includes predefined, RRC semi-static configuration, SCI or DCI or other dynamic signaling indication, etc., and specific reference may be made to the description of the foregoing embodiments, which are not repeated here.

specifically, alternatively, the second terminal may indicate whether to release (or use) the fourth resource through the SCI. If the release of the fourth resource is indicated, the reserved resources do not include the fourth resource.

K. And COT sharing indication information associated with the second COT, wherein the COT sharing indication information is used for indicating the sharing of resources in the second COT to the first terminal.

Specifically, optionally, if the first terminal receives the indication to share the resource in the second COT to the first terminal, that is, the first terminal and the second terminal are considered to have a transceiving relationship, the reserved resource does not include a fourth resource, and the first terminal may occupy the fourth resource.

Specifically, if the second COT is LBT performed by the second terminal and initialized if the LBT is successful, the second terminal has the right 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 right to share the fourth resource, and the reserved resource does not include the fourth resource.

If there are other terminals that will share the COT to the second terminal, it is understood that the second terminal will not initialize the second COT, and the reserved resources do not include the fourth resources. If no other terminal shares the COT with the second terminal, it is understood that the second terminal initializes the second COT, and the second terminal has the right to share the fourth resource, and the reserved resource includes the fourth resource.

In addition, the correspondence between the comparison result and whether the fourth resource is included or not set forth in the options a-L is merely an example, and other options are also possible, which is not limited in this application.

It will be appreciated that the second terminal may reserve a plurality of resources, and if the reserved plurality of resources are all within a COT starting with the first resource, the second terminal may process as a COT. If there are reserved resources outside the COT starting with the first resource, processing by a plurality of COTs. I.e. at the reserved resource outside the COT, another COT should be initialized as well. Optionally, at least one of the following parameters of the initial plurality of COTs is the same according to the reserved resource transmission: CAPC, COT length, CPE, LBT type, traffic priority, physical layer priority.

203, the first terminal excludes the first candidate resource from the candidate resource set, wherein a resource exclusion condition is satisfied between the first candidate resource and the reserved resource, and the resource exclusion condition comprises the conflict between the first candidate resource and the reserved resource.

In one embodiment, the first terminal excludes all the first candidate resources that meet the resource exclusion condition from the candidate resource set, where the resource exclusion condition may include that the first candidate resource collides with the reserved resource, and it may be understood that the resource exclusion condition may include other conditions besides the condition, for example, RSRP of a channel where the resource indication information associated with the reserved resource is located is greater than a threshold, and for convenience of description, the default candidate resource in the present application meets other conditions in the resource exclusion condition.

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

In the embodiment of the present application, the first terminal performing resource selection determines whether the reserved resources include the fourth resources according to at least one of the conditions, so that the first terminal can selectively avoid the shared fourth resources when further performing resource exclusion and resource selection, and under different conditions, the continuity of the second COT of the second terminal or the normal operation of the high priority service preemption mechanism can be ensured, the system efficiency can be effectively improved, and the trade-off between the two can be realized.

It should be noted that the embodiments of the resource exclusion methods of fig. 3 and 8 may be implemented independently, or may be implemented in combination based on certain inter-relationships, for example, step 102 and related descriptions in fig. 3 may be replaced by step 202 and related descriptions in the embodiment of fig. 8, for example, step 201 and related descriptions in fig. 8 may be replaced by step 101 and related descriptions in the embodiment of fig. 3, for example, and for example, step 202 and related descriptions in fig. 8 may be replaced by step 102 and related descriptions in the embodiment of fig. 3, and so on. In other words, the steps of the embodiment of FIG. 3 may be combined with the steps of FIG. 8 in accordance with certain interconnections.

Referring to fig. 10, a flow chart of another resource removing method according to an embodiment of the present application is shown, and fig. 2a to 2b may be a system architecture diagram to which the resource removing method is applicable. As shown in fig. 10, the method may include: 301-306, wherein the order of execution of the steps is not limited in this embodiment. In the flowchart shown in fig. 10, the first terminal is a terminal for performing COT sharing, the second terminal is a terminal for sharing the COT of the first terminal, and the third terminal may be a terminal for performing resource exclusion. In some embodiments, the second terminal and the third terminal may be the same terminal, as shown in the figure, the resource exclusion method in the embodiment of the present application includes, but is not limited to, the following steps:

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

The first terminal may initialize a first COT with the first resource. Illustratively, the first terminal performs LBT, and initializes the first COT if the LBT is successful, and the first terminal may share resources other than the first resource in the first COT. The resources for sharing may be all or part of the resources in the first COT except the first resource.

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

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

It will be appreciated that the two steps 302 and 303 may be combined, such as the first terminal sending the COT sharing indication information by 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 one piece of authorization information when performing the COT sharing, for example, the authorization information may be referred to as COT sharing indication information, and it is understood that the authorization information may also be referred to as COT indication information, COT structure information, COT sharing information, COT authorization information, and the like. In some possible implementations, the unified field may not be used for carrying the information, but include multiple information (fields), and the effect of indicating to share the resources in the COT to other terminals is achieved through the indication of the multiple information. The multiple information (fields) may be carried in different locations, for example, CPE, LBT type, etc. may be carried in the first level SCI, and the resource indication information, UE identification (or Source ID and/or destination ID), and other information may be carried in the second level SCI, etc., which is not limited in this application. For convenience of description, the present application describes the 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, and in this embodiment of the present application, the first terminal sends the COT sharing indication information. The COT sharing indication information at least includes resource information for sharing in the first COT and/or to which terminal device or devices are shared. For convenience of description, the present application classifies sharing modes into two types according to whether a first terminal designates a shared terminal when performing COT sharing:

mode 1: the COT sharing indication information indicates shared resources, but does not indicate shared terminals.

Mode 2: the COT sharing instruction information indicates the shared resource and the shared terminal.

Illustratively, the COT shared indication information needs to contain at least one of the following information or fields: the identifier of the terminal or the identifier of the service (source ID and/or destination ID) to be shared, the time domain resource allocation, the 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 identifier of the terminal or the identifier of the service (source ID and/or destination ID) to be shared.

In some embodiments, the first terminal may determine whether to share or to which terminals to share based on at least one of:

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

based on scheduling or indication information or grant information of the base station. For example, the scheduling information and the grant information may be carried on DCI and/or RRC; the indication information may be COT structure indication information, and is carried in DCI format 2_0.

Based on the request of other terminals, for example, the first terminal performs COT sharing according to the COT sharing request sent by the other terminals, or determines which terminals to share, the other terminals may send the request to the first terminal directly through the side link, including unicast, multicast or broadcast to the first terminal, or the other terminals send the request to the base station and then the base station issues the request to the first terminal.

In some embodiments, the first terminal may not specify which terminals or services are shared, and other terminals are occupied according to the 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, cap.

For example, the timing for the first terminal to determine to share the first COT may be determined by at least one of: based on the sharing of base station scheduling, for example, the first COT is determined to be shared when the scheduling signaling is received; based on the reservation or the requested sharing of the other terminal, it may be determined to share the first COT when receiving the information of the reserved resource of the other terminal, or it may be determined to share the first COT when the first terminal transmits.

In some embodiments, the first terminal may determine whether to share to the other terminal according to at least one of the following information of the other terminal:

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

2. the resource reservation information of the other terminal, for example, determines whether to share the resource to the other terminal according to whether the reserved resource of the other terminal is located in the first COT or whether the reserved resource of the other terminal overlaps with the resource in the first COT partially or completely;

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

4. the Source ID/destination ID of other terminals, for example, judging whether to match with the Source ID and/or destination ID of a certain service of the first terminal;

5. whether other terminals have a receiving-transmitting relationship with the first terminal;

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

7. whether the remaining PDB of the other terminal is smaller than a certain threshold;

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

In the following, in the scenarios of mode 1 and mode 2, the time-frequency domain resource allocation for the COT sharing in the COT sharing indication information is specifically described, and a specific implementation manner is illustrated by way of example:

1. time domain resource allocation:

if COT sharing is performed in mode 1, the time domain resource may be indicated by bitmap, or by a time domain resource indication value (time resource indication value, TRIV), or start+length/number, or a time domain resource allocation pattern. Optionally, one or more patterns are (pre) configured, with SCI indicating one or more patterns to indicate time domain resource allocation.

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

Each ID corresponds to a time slot, and the arrangement sequence of each ID is the arrangement sequence of each ID in the corresponding time domain. For example, the IDs may be 1, 2, 3, and 4, respectively, and if a certain ID occupies a plurality of time slots consecutively, the ID repeatedly appears a plurality of times, for example, if the ID 1 occupies two time slots, the IDs are arranged as 1, 2, 3, and 4.

In another implementation, the first terminal may indicate each ID and the number of occupied slots, for example, may indicate the number of id1+ slots and the number of id2+ slots, and continue to occupy two slots with an ID of 1 in the above embodiment, and occupy one slot, for example, may indicate an ID of 1+2 slots, an ID of 2+1 slots, an ID of 3+1 slots, and an ID of 4+1 slots. It will be appreciated that the above description of time slot allocation is given by way of example, and that time slots may be replaced by other time unit granularity.

In yet another implementation, the first terminal may indicate each ID and the corresponding time domain resource allocation, for example, may indicate id+time domain resource allocation (bitmap, or by TRIV, or start+length/number indicates resource, or time domain resource allocation pattern) of each ID.

2. Frequency domain resource allocation:

if COT sharing is performed in mode 1, the frequency domain resource or frequency domain resource allocation pattern may be indicated by bitmap, or by a frequency domain resource indication value (Frequency resource indication value, FRIV), or start+length/number. Optionally, one or more patterns are (pre) configured, with SCI indicating one or more patterns to indicate frequency domain resource allocation.

If the COT sharing is performed according to the mode 2, in one implementation manner, the first terminal may indicate multiple IDs, where each ID corresponds to 1 RB (or interface), and the arrangement sequence of each ID is the arrangement sequence on the frequency domain corresponding to each ID. For example, the IDs may be 1, 2, 3, and 4, respectively, and if a certain ID occupies a plurality of RBs (or interlaces) consecutively, the ID repeatedly appears a plurality of times, for example, ID1 occupies two RBs (or interlaces), and the IDs are arranged as 1, 2, 3, and 4.

In another implementation, the first terminal may indicate the respective IDs and the number of RBs (or interlaces) occupied, for example, the number of id1+rbs or interlaces or the number of subchannels, the number of id2+rbs or the number of interlaces or the number of subchannels.

In yet another implementation, the first terminal may indicate each ID and the corresponding frequency domain resource allocation, for example, may indicate id+frequency domain resource allocation (bitmap, or through FRIV, or start+length/number indicates resource, or frequency domain resource allocation pattern) for each ID.

The indication modes of performing time domain resource allocation and frequency domain resource allocation in the COT sharing indication information are described above, and the carrying modes of the COT sharing indication information are described below.

The payload size of the COT sharing indication information may be related to a channel bandwidth, a COT length, SCS, the number of sharing terminals, the number of sharing services, the number of sharing resources, the manner of resource allocation, etc., and thus may not be fixed. This will lead to blind detection and complexity increase of the terminal receiving the COT sharing indication information. Thus, the present application may employ the following method a or method B to indicate the bit number and/or payload of the COT sharing indication information and/or location information (i.e., time domain and/or frequency domain resource information):

Method A: for the COT sharing indication information to be carried in the first-stage SCI, the second-stage SCI or the MAC-CE, determining whether the first-stage SCI, the second-stage SCI or the MAC-CE contains the COT sharing indication information according to the (pre) configuration, and/or the bit number occupied by the COT sharing indication information.

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

Specifically, the number of bits occupied by the COT shared indication information in the above method a and method B may be (pre) configured or indicated; alternatively, at least one of the channel bandwidth, the COT length, the SCS, the number of shared UEs, the number of shared services, the number of shared resources, the resource allocation scheme, and the number of COT shared indication information may be (pre) configured or indicated. And the terminal receiving the COT sharing indication information implicitly determines the payload/occupied bit number of the COT sharing indication information according to at least one item of the information.

The embodiment considers that in the case that the bit number of the COT sharing indication information is not determined, the terminal receiving the COT sharing indication information is prevented from blind detection by a pre-configuration or indication method.

It may be understood that if the first terminal needs to share multiple resources, or share multiple resources to multiple terminals, or share multiple services, the first terminal may indicate in one COT sharing indication information, or may indicate using multiple COT sharing indication information separately, which is not limited herein.

Correspondingly, the terminal (e.g., the second terminal and/or the third terminal) that receives the COT sharing indication information may determine whether the first-stage side link control information SCI, the second-stage SCI, or the medium access control-control element MAC-CE includes the COT sharing indication information, and/or determine the number of bits occupied by the COT sharing indication information, so as to determine the resource where the COT sharing indication information is located or the manner of receiving the COT sharing indication information, thereby receiving the COT sharing indication information on the corresponding resource.

304, the third terminal receives the COT sharing indication information, and determines whether the reserved resource includes the second resource indicated by the COT sharing indication information when the resource is excluded.

In one implementation manner, when the first terminal reserves the resources, the first terminal can reserve the first resources used by the first terminal, and the second resources shared to other terminals are indicated by the COT sharing indication information.

When the third terminal performs the resource exclusion, it may determine whether the reserved resource includes the second resource according to at least one of the following (it should be noted that, a determination manner of determining whether the reserved resource includes the second resource herein may refer to a related description of whether the reserved resource includes the fourth resource in the embodiment of fig. 8, which is not described herein in detail):

the RSRP of the channel where the COT sharing indication information is located is larger than a threshold value;

a remaining PDB of the third terminal;

congestion level of the channel;

whether Source ID and/or destination ID (Source ID/destination ID) match;

a relation between the priority of the third terminal and a priority threshold;

the relation of the priority of the first terminal and the priority of the third terminal.

After the third terminal determines the reserved resource, the candidate resource in the candidate resource set and the reserved resource can be eliminated, wherein the resource elimination condition comprises conflict between the candidate resource and the reserved resource, and optionally, the resource elimination condition comprises that the conflict between the second resource indicated by the COT sharing indication information and the candidate resource needs to be eliminated.

In another implementation manner, when the first terminal performs resource reservation, the first terminal may also reserve the first resource used by itself, and the remaining second resources or the second resources for sharing in the first COT. The first terminal may instruct to release the second resource through the first-level SCI or the second-level SCI or the MAC CE or the COT sharing indication information when actually transmitting. For example, 1bit indicates whether to release the second resource. Therefore, when other terminals determine to reserve resources, the other terminals do not include the second resources and do not conduct resource exclusion for the second resources. This approach may provide a flexibility of reservation followed by release.

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

306, the second terminal sends indication information for indicating to release the original reserved resource.

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

307, the third terminal does not exclude the original reserved resources of the second terminal when the resources are excluded according to the indication information.

The second terminal in this embodiment may be any terminal sharing the first COT of the first terminal.

In one implementation, for mode 1 of the terminal that does not indicate sharing in the COT sharing indication information, but indicates the shared second resource. The second terminal may determine whether to use the COT resource shared by the first terminal (hereinafter, at least one item may be simply referred to as a COT sharing condition) according to at least one of the following:

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

2. the resource reservation information of the second terminal, for example, determines whether to share the first COT of the first terminal according to whether the reserved resource of the second terminal is located in the first COT, or whether the reserved resource of the second terminal overlaps with the resource in the first COT partially or entirely;

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

4. judging whether the Source ID/destination ID of the second terminal is matched with the Source ID and/or destination ID of a certain service of the first terminal;

5. whether the second terminal has a receiving-transmitting relation with the first terminal or not;

6. the service priority of the second terminal, or the physical layer priority, or whether the CAPC is higher than the priority of the first terminal or higher than a 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 second terminal priority is higher than a threshold, and the priority may refer to a cap, or a service priority, or a physical layer priority;

10. the second terminal originally reserves a terminal whose resource is in the first COT.

In one implementation, for mode 1 of the terminal that does not indicate sharing in the COT sharing indication information, there may be the following modes according to whether the second terminal reserves resources:

mode 1-1: the second terminal has reserved resources and the reserved resources are within the first COT, and the second terminal satisfies the COT sharing condition, the second terminal may use the reserved resources.

Mode 1-2: the second terminal has reserved resources and the second terminal satisfies the COT sharing condition, the second terminal may adjust the reserved resources to use the second resources for sharing in the first COT, and it may be appreciated that the reserved resources may be internal to the first COT and external to the first COT.

Modes 1 to 3: the second terminal does not reserve resources and the second terminal satisfies the COT sharing condition, the second terminal may use the second resources for sharing in the first COT.

In one implementation, for the mode 2 in which the resource for sharing and the corresponding shared terminal are indicated in the COT sharing indication information, the shared terminal includes the second terminal, and the following modes may exist according to whether the second terminal reserves the resource:

mode 2-1: the second terminal reserves the resources, but indicates the resources shared to the second terminal in the first COT in the COT sharing indication information, and the second terminal discards the reserved resources and uses the shared resources indicated by the COT sharing indication information for transmission.

Mode 2-2: the second terminal does not reserve resources, but indicates the resources shared to the second terminal in the first COT in the COT sharing indication information, and the second terminal may transmit according to the shared resources indicated by the COT sharing indication information.

For the above modes 1-2 and 2-1, the second terminal has reserved resources, but because the COT resource shared by the first terminal is used to actively or passively perform resource adjustment, the second terminal does not transmit on the reserved resources, and the other terminals still perform resource exclusion according to the reserved resources, which will cause excessive exclusion. Therefore, when the second terminal performs resource adjustment, the second terminal transmits instruction information to instruct to discard the original reserved resource. For convenience of description, the third terminal is used as a terminal for performing resource exclusion, and it can be understood that the terminal for performing resource exclusion may include a plurality of terminals, and the third terminal may be any one of the terminals. When the third terminal performs resource elimination, the original reserved resources of the second terminal which are subjected to resource adjustment due to COT sharing are not eliminated.

In some embodiments, the second terminal may also send indication information when transmitting using the shared resource, where the indication information is used to indicate whether to release the original reserved resource. Alternatively, the second terminal may indicate whether to release the original reserved resource through 1bit in the SCI. For example, if release is indicated, the next reserved resource closest to the SCI may be (pre) configured to be released, or the reserved resource in a subsequent reserved resource period of the second terminal may be (pre) configured to be released, or the reserved resource and the periodic reserved resource in the subsequent reserved resource period of the second terminal may be (pre) configured to be released. For example, it is also possible to use 2 bits to indicate whether to release the reserved resources and to release the next reserved resources closest to the SCI and/or to reserve resources in subsequent reserved resource periods and/or to reserve resources in subsequent periods.

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

The first terminal, the second terminal and the third terminal are independent terminals. Each step is independent and can be independently implemented.

Referring to fig. 11, a flow chart of another resource removing method according to an embodiment of the present application is shown, and fig. 2a to 2b may be a system architecture diagram to which the resource removing method is applicable. As shown in fig. 11, the method may include: 401-402, wherein the order of execution of the steps is not limited in this embodiment. As shown in fig. 11, the resource exclusion method of the embodiment of the present application includes, but is not limited to, the following steps:

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

402, the first terminal excludes the first candidate resource from the candidate resource set, and the first candidate resource and the reserved resource meet a resource exclusion condition, where the resource exclusion condition includes that the reserved resource and the first candidate resource overlap in a time domain, or that the reserved resource overlaps with a time domain starting position of the first candidate resource. Optionally, the LBT type of the reserved resource and the first candidate resource is type1 and/or type 2A/2B/2C. I.e. all frequency domain resources of the time slot in which the reserved resource is located are excluded.

In the case where there is an overlap between the candidate resources in the candidate resource set and the reserved resources of the second terminal, which may cause LBT collision, as described below in conjunction with fig. 12a, as shown in fig. 12a, the first candidate resource overlaps with the reserved resources in the time domain, but there is no overlap in the frequency domain, and if resource exclusion is performed according to the resource exclusion condition that the overlapping is stored in the time-frequency domain, the first candidate resource is not excluded. The second terminal performs LBT before reserving the resources, the first terminal performs LBT before the first candidate resources, if the second terminal transmits CPE after the second terminal LBT succeeds, when the first terminal performs LBT, the second terminal transmits CPE, so that the first terminal LBT fails, and LBT collision occurs.

In order to solve the above problem, the resource exclusion condition of the present application includes that the reserved resource overlaps with the first candidate resource in the time domain, that is, the first candidate resource conflicts with the reserved resource when there is an overlap in the time domain. As shown in fig. 12b, although there is no overlap of the first candidate resource and the reserved resource in the frequency domain, there is overlap of the first candidate resource and the reserved resource in the time domain, i.e., it is determined that the first candidate resource collides with the reserved resource. It is understood that overlapping in this application may be understood as fully overlapping or partially overlapping, and may refer to time domain overlapping and/or frequency domain overlapping, and this application is not limited. For convenience of description, when the resource exclusion is performed, the first terminal defaults to meet 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 resource is greater than the threshold value, so as to satisfy the priority relationship between the reserved resource and the candidate resource, etc., and the description of the foregoing embodiment may be referred to, and will not be repeated herein. In addition, when the first terminal performs resource exclusion, the first terminal may exclude consecutive multiple timeslots, or exclude candidate resources corresponding to the entire COT. The excluding of the time slot, the multislot, the COT is understood as excluding all frequency domain resources on the time slot, the multislot, the COT, or excluding candidate resources overlapping any frequency domain resources on the time slot, the multislot, the COT.

In some embodiments, the resource exclusion condition further includes that the first candidate resource overlaps with the reserved resource in the frequency domain, in case the first terminal satisfies a third condition, the third condition including that at least one of the following parameters of the first terminal and the second terminal are the same: the LBT type, channel priority CAPC, CPE, contention window value, counter maximum, counter initial value N, it will be appreciated that the counter N is used for LBT type 1 flow, affecting the number of times channel detection is performed and the total duration of LBT. When the first terminal satisfies the third condition, the LBT methods of the first terminal and the second terminal may be considered to be substantially identical, and the resource may be excluded in a manner of overlapping time-frequency resources. As shown in fig. 12c, the LBT manner of the first terminal and the second terminal is basically consistent, and the LBT collision problem is not caused, so that the resource exclusion can be performed according to the time-frequency resource overlapping manner, that is, the resource exclusion condition includes that the first candidate resource overlaps with the reserved resource in the time domain and also includes that the first candidate resource overlaps with the reserved resource in the frequency domain, in other words, in this case, the first candidate resource overlaps with the reserved resource in both the time domain and the frequency domain, so that the first candidate resource cannot be excluded, only the time domain overlaps cannot be excluded, and the overlapping may include partial overlapping or total overlapping, which is not limited in the application. If the first terminal does not meet the third condition, the resource exclusion condition does not include that the first candidate resource and the reserved resource overlap in the frequency domain, i.e. the first candidate resource and the reserved resource are considered to overlap in the time domain (whether or not the frequency domain overlaps).

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

Referring to fig. 13, a flow chart of another resource removing method according to an embodiment of the present application is shown, and fig. 2a to 2b may be a system architecture diagram to which the resource removing method is applicable. As shown in fig. 13, the method may include: 501-502, wherein the order of execution of the steps is not limited, embodiments of the present application. As shown in fig. 13, the resource exclusion method of the embodiment of the present application includes, but is not limited to, the following steps:

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

And 502, under the condition that the reserved resource and a first candidate resource in the candidate resource set overlap in the time domain, the first terminal executes 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 collision problem shown in fig. 12a, when the first terminal determines that the reserved resource overlaps with the first candidate resource in the time domain, the first terminal may further perform channel access according to the LBT parameter of the second terminal, because the first terminal may determine the LBT position corresponding to the first candidate resource according to the LBT parameter of the second terminal, thereby avoiding LBT collision. The LBT parameter information of the second terminal may include at least one of: LBT type, cap, CPE, contention window value, counter initial value N.

As shown in fig. 12a, if the first terminal transmits the LBT when the second terminal transmits the CPE, the LBT collision may be caused, and if the first terminal determines that the location of the LBT is before the second terminal transmits the CPE according to the LBT parameter information of the second terminal, the LBT collision problem may be effectively avoided.

Referring to fig. 14, a flow chart of another resource removing method according to an embodiment of the present application is shown, and fig. 2a to 2b may be a system architecture diagram to which the resource removing method is applicable. As shown in fig. 14, the method may include: 601-602, wherein the order of execution of the steps is not limited by the embodiments of the present application. As shown in fig. 14, the resource exclusion method of the embodiment of the present application includes, but is not limited to, the following steps:

the first terminal determines 601 a reserved resource of the second terminal.

602, the first terminal excludes a first candidate resource from the candidate resource set, wherein a resource exclusion condition is satisfied between the first candidate resource and the reserved resource, the resource exclusion condition includes that a time domain end position of the reserved resource is before a starting time domain position of the first candidate resource, and a time interval between the time domain end position of the reserved resource and the starting time domain position of the first candidate resource is smaller than or equal to a first interval.

LBT collision problems may also occur when 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 differs by less than or equal to the first interval. As will be illustrated in connection with fig. 15, the time interval between the reserved resource and the first candidate resource before the reserved resource and the time interval between the end time domain position of the reserved resource and the start time domain position of the first candidate resource are smaller, and the LBT failure may be caused due to insufficient time between the reserved resource and the first candidate resource for data transmission by the second terminal on the reserved resource.

In order to solve the problem, when the first terminal performs resource exclusion, if a first candidate resource and a reserved resource are before meeting a resource exclusion condition, the resource exclusion condition includes that a time domain end position of the reserved resource is before a start time domain position of the first candidate resource, and a time interval between the time domain end position of the reserved resource and the start time domain position of the first candidate resource is smaller than or equal to a first interval, the first candidate resource is excluded, so that the LBT collision problem is avoided.

In some embodiments, 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: LBT type of the first terminal, cap, CPE, contention window value, counter initial value N, priority of the second terminal, priority of the first terminal, subcarrier spacing, etc. Wherein the priority of the terminal may include at least one of: 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, the first terminal does not exclude the first candidate resource even if the above-mentioned location condition is satisfied between the first candidate resource and the reserved resource; when the priority of the first terminal is less than or equal to the third priority threshold or the priority of the second terminal, the first terminal excludes the first candidate resource if the position difference between the first candidate resource and the reserved resource is less than or equal to the first interval described above, in other words, the resource exclusion condition further 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 satisfies the COT condition of sharing the second terminal (for example, the first terminal and the second terminal have a transceiving relationship), or the first terminal and the terminal of the initial COT have a transceiving relationship, the first terminal does not exclude the first candidate resource even if the first candidate resource and the reserved resource satisfy the above-mentioned position relationship; otherwise, the first candidate resource is excluded. In other words, the resource exclusion condition further includes that the first terminal and the second terminal do not satisfy the COT sharing condition.

In some embodiments, the first terminal may not transmit from the slot boundary, leaving itself with LBT time. For example, multiple AGC positions are introduced within a time slot.

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

Referring to fig. 16, a flow chart of another resource removing method according to an embodiment of the present application is shown, and fig. 2a to 2b may be a system architecture diagram to which the resource removing method is applicable. As shown in fig. 16, the method may include: 701-702, wherein the order of execution of the steps is not limited, embodiments of the present application. As shown in fig. 16, the resource exclusion method of the embodiment of the present application includes, but is not limited to, the following steps:

701, the second terminal determines that a time domain end position of a reserved resource of the second terminal is before a start time domain position of a first candidate resource of the first terminal, and a time interval between the time domain end position of the reserved resource and the start time domain position of the first candidate resource is smaller than or equal to the first interval.

And 702, the second terminal adjusts the data transmission on the reserved resource, and after adjustment, the data transmission of the second terminal does not exist on the first resource of the reserved resource.

In this embodiment, in order to solve the LBT collision problem shown in fig. 15, if the second terminal performing resource reservation determines that the time domain end position of the reserved resource is before the start time domain position of the first candidate resource of the first terminal, and the time interval between the time domain end position of the reserved resource and the start time domain position of the first candidate resource is smaller than or equal to the first interval, the second terminal may adjust the data transmission on the reserved resource, and after the adjustment, there is no data transmission of the second terminal on the first resource of the reserved resource, where the first resource may refer to a resource with a certain time domain length at the end of the reserved resource. Illustratively, the adjusting data transmission may be: rate matching, or discarding the end of the corresponding transmission. Rate matching can be understood as taking up less resources, but still transmitting complete transport blocks (transport blocks), the code rate increases.

In some embodiments, the second terminal may determine whether to discard the end transmission according to the priorities of the first terminal and the second terminal, where the description of the priorities of the terminals may refer to the description of the foregoing embodiments, which is not repeated herein. For example, when the priority of the first terminal is higher than the priority of the second terminal, the second terminal discards the last partial transmission or performs rate matching, i.e. adjusts the data transmission on the reserved resource. 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 LBT type, cap, CPE, counter initial value N of the first terminal.

Referring to fig. 17, a flow chart of a resource sharing method according to an embodiment of the present application is shown, and fig. 2a to 2b may be a system architecture diagram to which the resource eliminating method is applicable. As shown in fig. 17, the method may include: 801-802, wherein the order of execution of the steps is not limited, embodiments of the present application. As shown in fig. 17, the resource sharing method in the embodiment of the present application includes, but is not limited to, the following steps:

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

The COT sharing indication information may be sent by a terminal of the initial COT, or sent by a network device, where the sending is applicable to the whole text, not just the embodiment.

The COT length unit of the first COT may be one of any time domain granularity of time slots, symbols, ms, us, etc.

802, the first terminal receives the COT sharing indication information.

Wherein the first time period is determined according to a (pre) configuration, and/or traffic priority (or physical layer priority), and/or subcarrier spacing, and/or UE capability.

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

The unit of the first time length may be one of any time domain granularity of time slots, symbols, ms, us, etc. In other words, the interval between the time when the second terminal or the network device transmits the COT sharing instruction information (or the time when the first terminal receives the COT sharing instruction information) and the first resource that performs sharing cannot be smaller 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 transmits 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 desire to receive the COT sharing indication information (or the time when the second terminal or the network device transmits the COT sharing indication information) and the shared first resource is smaller than the first duration.

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

The time for transmitting or receiving the COT sharing instruction information may be any one of the following:

transmitting or receiving the starting moment of COT sharing indication information;

transmitting or receiving the ending time of the COT sharing indication information;

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

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

Wherein, the interval between the time of sending or receiving the COT sharing indication information and the shared first resource may refer to any one of the following:

an interval between a time of transmitting or receiving the COT sharing indication information and a first resource start position (e.g., a start symbol) of the sharing;

and an interval between a time of transmitting or receiving the COT sharing indication information and one AGC symbol in the shared first resource. For example, the interval between AGC symbols at which the actual transmission starts. Because the actual transmission should start from the AGC symbol, there may be multiple AGC symbol positions within a slot.

Illustratively, the first time length in the embodiments of the present application may be determined according to a (pre) configuration, and/or a traffic priority (or physical layer priority), and/or a subcarrier spacing, and/or a terminal capability.

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

Second timeLong as T ₀ Wherein T is ₀ For example 100ms or 1100ms, depending on the (pre) configuration determination.

The third time length isWherein->The value of (2) is determined according to the subcarrier spacing, for example, as shown in table one:

List one

The fourth time length is T ₁ Wherein T is ₁ The value of (2) is one of the following:

1、for example->Alternatively T ₁ ＝0；

The value of (2) may be determined according to the subcarrier spacing, for example, as shown in table two:

watch II

2、T ₁ And according to subcarrier spacing and/or UE capability.

The fifth time length is T ₂ Wherein T is ₂ The value of (2) is one of the following:

1、T _2min ≤T ₂ remaining packet delay budget (in slots), e.g. T ₂ ＝T _2min Alternatively, T ₂ ＝remaining packet delay budget(in slots)；

T _2min Can be determined according to traffic priority (or physical layer priority) and/or (pre) configuration and/or subcarrier spacing. For example, the values (candidate values are n1, n5, n10, n 20) corresponding to each priority (1-8) are preconfigured (the value n1 corresponds to 1*2) ^μ The value n5 corresponds to 5*2 ^μ And so on, where μ=0, 1,2,3 denote subcarrier spacings 15, 30, 60, 120kHz, respectively, as well as table one and table two. For example, the corresponding T is determined based on the (pre) configured priority and the corresponding value mapping and priority _2min And (5) taking a value.

remaining packet delay budget may be determined based on subcarrier spacing and/or (pre) configuration. For example, the (pre) configuration takes a value {0 … 1023} (unit 0.5 ms), the unit is reduced to a value of slots according to the subcarrier spacing.

2、T ₂ Based on traffic priority (or physical layer priority) and/or subcarrier spacing and/or UE capability.

Since the terminal needs to perform packet coding or the like from the time of receiving the COT shared instruction information to the time of requiring data to be transmitted, a certain time is required. The present application thus defines that there is a minimum interval between the end position of sending the COT sharing indication information and the start position of the resource for sharing, which is required to satisfy the requirement that there is enough time for data processing.

The following will describe a communication device provided in an embodiment of the present application.

According to the method embodiment, the communication device is divided into the functional modules, for example, each functional module may be divided corresponding to each function, or two or more functions may be integrated into one processing module. The integrated modules may be implemented in hardware or in software functional modules. It should be noted that the division of the modules in this application is illustrative, and is merely a logic function division, and other division manners may be implemented in practice. The communication device of the embodiment of the present application will be described in detail below with reference to fig. 18 to 20.

Fig. 18 is a schematic structural diagram of a communication device provided in the embodiment of the present application, and as shown in fig. 18, the communication device 1000 may correspondingly implement functions or steps implemented by the communication device (e.g., the first terminal, the second terminal, or the third terminal) in the foregoing method embodiments. The communication device may include a processing unit 1200 and a transceiving unit 1100. Optionally, a storage unit may be included, which may be used to store instructions (code or programs) and/or data. The processing unit 1200 and the transceiver unit 1100 may be coupled to the storage unit, for example, the processing unit 1200 may read instructions (codes or programs) and/or data in the storage unit to implement the corresponding method. The units can be independently arranged or partially or fully integrated. For example, the transceiving unit 1100 may include a transmitting unit and a receiving unit. The transmitting unit may be a transmitter and the receiving unit may be a receiver. The entity corresponding to the transceiving unit 1100 may be a transceiver.

In some possible embodiments, the communications device 1000 can correspondingly implement the behavior and functions of the first terminal in the above method embodiments. For example, the communication device 1000 may be a first terminal, or may be a component (e.g., a chip or a circuit) applied to the first terminal. The transceiving unit 1100 may be used, for example, to perform all of the receiving or transmitting operations performed by the first terminal in the embodiments of fig. 3, 8, 10, 11, 13, 14, and 16, e.g., to receive the resource indication information in fig. 3, 8, to receive the LBT parameter information in the embodiment shown in fig. 10, step 302, step 303, the embodiment shown in fig. 13, and/or other processes for supporting the techniques described herein. The processing unit 1200 is configured to perform all operations except for the transceiving operations performed by the first terminal in the embodiments of fig. 3, 8, 10, 11, 13, 14 and 16, for example, step 101, step 102 and step 103 in the embodiment shown in fig. 3, step 201, step 202 and step 203 in the embodiment shown in fig. 8, step 401 and step 402 in the embodiment shown in fig. 11, step 501 and step 502 in the embodiment shown in fig. 13, and step 601 and step 602 in the embodiment shown in fig. 14.

In some possible embodiments, the communications device 1000 can correspondingly implement the behavior 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 (e.g., a chip or a circuit) applied to the second terminal. The transceiver unit 1100 may be used, for example, to perform all of the receiving or transmitting operations performed by the second terminal in the embodiments of fig. 10, 16, such as step 306 in the embodiment shown in fig. 10, and/or other processes for supporting the techniques described herein. The processing unit 1200 is configured to perform all operations except the transceiving operations performed by the second terminal in the embodiments of fig. 10 and 16, step 305 of the embodiment shown in fig. 10, and steps 701 and 702 of the embodiment shown in fig. 16.

In some possible embodiments, the communications 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 (e.g., a chip or a circuit) applied to the third terminal. The transceiving unit 1100 may be used, for example, to perform all of the receiving or transmitting operations performed by the third terminal in the embodiment of fig. 10, such as step 303 and step 306 in the embodiment shown in fig. 10, and/or to support other processes of the techniques described herein. The processing unit 1200 is configured to perform all operations except the transceiving operation performed by the third terminal in the embodiment of fig. 10, and step 304 and step 307 of the embodiment shown in fig. 10.

The first terminal, the second terminal and the third terminal according to the embodiment of the present application are described above, and possible product forms of the first terminal, the second terminal and the third terminal are described below. It should be understood that any form of product having the function of the first terminal described in fig. 18, or any form of product having the function of the second terminal described in fig. 18, or any form of product having the function of the third terminal described in fig. 18 falls within the scope of the embodiments of the present application. It should also be understood that the following description is only exemplary, and not limiting the product forms of the first, second, and third terminals of the embodiments of the present application.

In a possible implementation, in the communications apparatus shown in fig. 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 transmitting unit and a receiving unit, where the transmitting unit may be a transmitter and the receiving unit may be a receiver, and the transmitting unit and the receiving unit are integrated into one device, for example, 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 is not limited to the connection manner of the processor and the transceiver.

Fig. 19 is a schematic structural diagram of another communication device 2000 according to an embodiment of the present application. The communication device in fig. 19 may be the first terminal, the second terminal, or the third terminal.

As shown in fig. 19, the communication device 2000 includes one or more processors 2200, a transceiver 2100. The transceiver 2100 may implement the functions of the transceiver unit 1100, and the processor 2200 may 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 to perform the functions (or operations) of receiving and a transmitter to perform the functions (or operations) of transmitting. And transceivers are used to communicate with other devices/means via transmission media.

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

The specific connection medium between the transceiver 2100, the processor 2200, and the memory 2300 is not limited in the embodiments of the present application. In the embodiment of the present application, the transceiver 2100, the processor 2200 and the memory 2300 are connected by a bus 2400, which is shown by a thick line in fig. 19, and the connection manner between other components is merely schematically illustrated and not limited. The buses may be classified as address buses, data buses, control buses, etc. For ease of illustration, only one thick line is shown in fig. 19, but not only one bus or one type of bus.

In the embodiments 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, or the like, and may implement or execute the methods, steps, and logic blocks disclosed in the embodiments of the present application. The general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present application may be embodied directly in a hardware processor, or in a combination of hardware and software modules in the processor.

In the embodiment of the present application, the Memory may include, but is not limited to, nonvolatile Memory such as Hard Disk Drive (HDD) or Solid State Drive (SSD), random access Memory (Random Access Memory, RAM), erasable programmable Read-Only Memory (Erasable Programmable ROM, EPROM), read-Only Memory (ROM), or portable Read-Only Memory (Compact Disc Read-Only Memory, CD-ROM), etc. The memory is any storage medium that can be used to carry or store program code in the form of instructions or data structures and that can be read and/or written by a computer (e.g., a communication device, etc., as shown herein), but is not limited to such. The memory in the embodiments of the present application may also be circuitry or any other device capable of implementing a memory function for storing program instructions and/or data.

The processor 2200 is mainly used for processing communication protocols and communication data, controlling the whole communication device, executing software programs, and processing data of the software programs. The memory 2300 is primarily used to store software programs and data. The transceiver 2100 may include control circuitry for primarily converting baseband signals to radio frequency signals and processing radio frequency signals, and an antenna. The antenna is mainly used for receiving and transmitting radio frequency signals in the form of electromagnetic waves. Input and output devices, such as touch screens, display screens, keyboards, etc., are mainly used for receiving data input by a user and outputting data to the user.

When the communication device is powered on, the processor 2200 may read the software program in the memory 2300, interpret and execute instructions of the software program, and process data of the software program. When data is required to be transmitted by wireless, the processor 2200 outputs a baseband signal to the radio frequency circuit after performing baseband processing on the data to be transmitted, and the radio frequency circuit performs radio frequency processing on the baseband signal and then transmits the radio frequency signal to the outside in the form of electromagnetic waves through the antenna. When data is transmitted to the communication device, the radio frequency circuit receives a radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor 2200, and the processor 2200 converts the baseband signal into data and processes the data.

In another implementation, the radio frequency circuitry and antenna may be provided separately from the processor performing the baseband processing, e.g., in a distributed scenario, the radio frequency circuitry and antenna may be in a remote arrangement from the communication device.

It will be appreciated that the communication device shown in the embodiment of the present application may also have more components than those shown in fig. 19, and the embodiment of the present application is not limited thereto. The methods performed by the processors and transceivers shown above are merely examples, and reference is made to the methods described above for specific steps performed by the processors and transceivers.

In another possible implementation, in the communications apparatus shown in fig. 18, the processing unit 1200 may be one or more logic circuits, and the transceiver unit 1100 may be an input-output interface, which is also referred to as a communications interface, or an interface circuit, or an interface, or the like. Alternatively, the transceiver unit 1100 may be a transmitting unit and a receiving unit, the transmitting unit may be an output interface, and the receiving unit may be an input interface, and the transmitting unit and the receiving unit are integrated into one unit, for example, the 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 processing unit 1200 may be implemented by the logic circuit 3001, and the transceiver unit 1100 may be implemented by the interface 3002. The logic 3001 may be a chip, a processing circuit, an integrated circuit, or a system on chip (SoC) chip, and the interface 3002 may be a communication interface, an input/output interface, a pin, or the like. Fig. 20 exemplifies the communication device described above as a chip, which includes a logic circuit 3001 and an interface 3002.

In the embodiment of the application, the logic circuit and the interface may also be coupled to each other. The embodiments of the present application are not limited to specific connection manners of logic circuits and interfaces.

Illustratively, when the communications apparatus is configured to perform the method, function, or step performed by the first terminal, the logic 3001 is configured to determine a reserved resource of the second terminal, where the reserved resource includes at least one of a third resource or a fourth resource, where the third resource is a resource for transmission by the second terminal in a second COT of the second terminal, and the fourth resource includes a resource other than the third resource in the second COT or a resource for sharing in the second COT; and excluding a first candidate resource from a set of candidate resources, the first candidate resource and the reserved resource meeting a resource exclusion condition, the resource exclusion condition comprising a conflict between the first candidate resource and the reserved resource.

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

Illustratively, when the communications device is configured to perform a method or function or step performed by the first terminal described above, the logic 3001 is configured to determine the reserved resources of the second terminal; and excluding a first candidate resource from a set of candidate resources, the first candidate resource comprising at least one of a first resource or a second resource; the first resource is a resource used for the first terminal to transmit in a first channel occupation time COT of the first terminal, the second resource comprises a resource except the first resource in the first COT or a resource used for sharing in the first COT, a resource exclusion condition is met between the first candidate resource and the reserved resource, the resource exclusion condition comprises a first condition or a second condition, and the first condition comprises a conflict between the first resource and the reserved resource; the second condition includes at least one of the first resource or the second resource colliding with the reserved resource.

It may be understood that the communication device shown in the embodiments of the present application may implement the method provided in the embodiments of the present application in a hardware manner, or may implement the method provided in the embodiments of the present application in a software manner, which is not limited to this embodiment of the present application.

The embodiment of the application also provides a wireless communication system, which comprises a first terminal and a second terminal, wherein the first terminal and the second terminal can be used for executing the method in any of the previous embodiments. The wireless communication system may further include a third terminal, for example.

Furthermore, the present application also provides a computer-readable storage medium having computer code stored therein, which when run on a computer, causes the computer to perform operations and/or processes performed by the first terminal, or the second terminal, or the third terminal in the methods provided herein.

The present application also provides a computer program product comprising computer code or a computer program which, when run on a computer, causes operations and/or processes performed by a first terminal, or a second terminal, or a third terminal in the methods provided herein to be performed.

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

The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the technical effects of the scheme provided by the embodiment of the application.

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

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

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

Claims

1. A method for resource elimination, comprising:

the first terminal determines reserved resources of the second terminal;

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 the first terminal to transmit in a first channel occupation time COT of the first terminal, the second resource comprises a resource except the first resource in the first COT or a resource used for sharing in the first COT, a resource exclusion condition is met between the first candidate resource and the reserved resource, the resource exclusion condition comprises a first condition or a second condition, and the first condition comprises a conflict between the first resource and the reserved resource; the second condition includes at least one of the first resource or the second resource colliding with the reserved resource.

2. The method of claim 1, wherein the resource exclusion condition comprises the first condition or the second condition is determined based on at least one of:

a comparison result of the priority of the first terminal and a second priority threshold;

a priority comparison result of the resource priority in the first COT and the reserved resource of the second terminal;

the priority of the second resource is compared with the priority of the reserved resource;

demand information whether the second resource is shared;

preconfigured information.

3. The method according to claim 1 or 2, wherein the candidate resource set includes a plurality of candidate resources, one candidate resource occupies a length of one COT in a time domain, or one candidate resource occupies a basic time unit in a time domain; the plurality of candidate resources includes the first candidate resource.

4. The method of claim 3, wherein if one candidate resource occupies a length of one COT in a time domain, there is no overlap between each candidate resource of the plurality of candidate resources; or, there are partially overlapping candidate resources in the plurality of candidate resources.

5. The method of claim 4, wherein a difference in position in time domain between two candidate resources of the plurality of candidate resources is N base time units, the N being an integer greater than or equal to 1.

6. The method of any of claims 1-5, wherein the reserved resource comprises at least one of a third resource or a fourth resource;

7. The method of claim 6, wherein whether the reserved resource comprises the fourth resource is determined based on at least one of:

a comparison result of the priority of the first terminal and a first priority threshold;

the service priority of the first terminal is compared with the service priority of the second terminal;

a result of comparing the resource priority in the first COT of the first terminal with the resource priority in the second COT of the second terminal;

the service priority of the first terminal is compared with the service priority carried by the fourth resource;

Receiving and transmitting relation information between the first terminal and the second terminal;

a remaining packet delay budget, PDB, for the first terminal;

the Source ID and/or destination ID of the first terminal and the Source ID and/or destination ID of the second terminal are compared;

congestion level information of the channel;

preconfigured information;

the indication information of the second terminal is used for indicating the release of the fourth resource;

and COT sharing indication information associated with the second COT, wherein the COT sharing indication information is used for indicating sharing of resources in the second COT to the first terminal.

8. A method for resource elimination, comprising:

9. The method of claim 8, wherein whether the reserved resource comprises the fourth resource is determined based on at least one of:

a resource priority in a first COT of the first terminal and a resource priority in the second COT of the second terminal are compared, and the first COT comprises the first candidate resource;

a remaining packet delay budget, PDB, for the first terminal;

congestion level information of the channel;

preconfigured information;

10. A communication device, comprising:

a processing unit, configured to determine a reserved resource of the second terminal;

the processing unit is further configured to exclude a first candidate resource from a set of candidate resources, the first candidate resource comprising at least one of a first resource or a second resource; the first resource is a resource used for the first terminal to transmit in a first channel occupation time COT of the first terminal, the second resource comprises a resource except the first resource in the first COT or a resource used for sharing in the first COT, a resource exclusion condition is met between the first candidate resource and the reserved resource, the resource exclusion condition comprises a first condition or a second condition, and the first condition comprises a conflict between the first resource and the reserved resource; the second condition includes at least one of the first resource or the second resource colliding with the reserved resource.

11. The apparatus of claim 10, wherein the resource exclusion condition comprises the first condition or the second condition is determined based on at least one of:

demand information whether the second resource is shared;

preconfigured information.

12. The apparatus of claim 10 or 11, wherein the set of candidate resources includes a plurality of candidate resources, one candidate resource occupying a length of one COT in a time domain, or one candidate resource occupying a basic time unit in a time domain; the plurality of candidate resources includes the first candidate resource.

13. The apparatus of claim 12, wherein if one candidate resource occupies a length of one COT in a time domain, there is no overlap between each candidate resource in the plurality of candidate resources; or, there are partially overlapping candidate resources in the plurality of candidate resources.

14. The apparatus of claim 13, wherein a difference in position in time domain between two of the plurality of candidate resources is N base time units, the N being an integer greater than or equal to 1.

15. The apparatus of any of claims 10-14, wherein the reserved resource comprises at least one of a third resource or a fourth resource;

16. The apparatus of claim 15, wherein whether the reserved resource comprises the fourth resource is determined based on at least one of:

a remaining packet delay budget, PDB, for the first terminal;

the Source ID and/or the destination ID of the first terminal and the Source ID and/or the destination ID of the second terminal are compared;

congestion level information of the channel;

Preconfigured information;

17. A communication device, comprising:

a processing unit, configured to determine a reserved resource of a second terminal, where the reserved resource includes at least one of a third resource or a fourth resource, where the third resource is a resource used for transmission by the second terminal in a second COT of the second terminal, and the fourth resource includes a resource other than the third resource in the second COT or a resource used for sharing in the second COT;

the processing unit is further configured to exclude a first candidate resource from the candidate resource set, where 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 colliding with the reserved resource.

18. The apparatus of claim 17, wherein whether the reserved resource comprises the fourth resource is determined based on at least one of:

a remaining packet delay budget, PDB, for the first terminal;

congestion level information of the channel;

preconfigured information;

19. A communication device comprising a processor;

The processor is coupled with the memory;

the memory is used for storing instructions;

the processor being configured to execute the instructions to cause the method of any one of claims 1-7 to be performed; or,

the processor is configured to execute the instructions to cause the method of claim 8 or 9 to be performed.

20. A computer readable storage medium for storing a computer program or instructions which, when executed, performs the method of any of claims 1-7; alternatively, the method of claim 8 or 9 is performed when said computer program or instructions are executed.