CN117676718A

CN117676718A - Method and device for determining resources

Info

Publication number: CN117676718A
Application number: CN202211217121.2A
Authority: CN
Inventors: 黎超; 薛丽霞; 刘云
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2022-09-07
Filing date: 2022-09-30
Publication date: 2024-03-08
Also published as: WO2024051682A1

Abstract

The application provides a method and a device for determining resources, wherein the method can comprise the following steps: the first terminal equipment receives first information in a sensing window, wherein the first information indicates first channel occupation time COT of the second terminal equipment, and the first COT comprises resources occupied by a first feedback channel; the first terminal device excludes reserved resources of the first data associated with the first feedback channel from the candidate set of resources in the selection window, and excludes reserved resources of the first feedback channel from the candidate set of resources. By the scheme, the first terminal equipment can determine candidate resources, and the feedback performance of the first data is improved.

Description

Method and device for determining resources

The present application claims priority from the chinese patent office, application number 202211087432.1, application name "a resource determination method and apparatus," filed on 7, 9, 2022, the entire contents of which are incorporated herein by reference.

Technical Field

The present disclosure relates to the field of communications technologies, and in particular, to a method and an apparatus for determining a resource.

Background

In a wireless communication system, spectrum resources can be divided into licensed spectrum and unlicensed spectrum. Currently, in Sidelink (SL) communication, enabling unlicensed spectrum is an important evolution direction.

In unlicensed spectrum, terminal devices may use spectrum resources in a contention-based manner. Therefore, how the terminal device determines candidate resources when performing SL communication over unlicensed spectrum is a problem that currently needs to be considered.

Disclosure of Invention

The application provides a method and a device for determining resources, which are used for determining candidate resources by first terminal equipment.

In a first aspect, a method for determining resources is provided, which may be performed by a first terminal device, or may be performed by a component (e.g. a chip or a circuit) of the first terminal device, and for convenience, will be described below with reference to the first terminal device being implemented as an example.

The method comprises the following steps: the first terminal equipment receives first information in a sensing window, wherein the first information indicates first channel occupation time COT of the second terminal equipment, and the first COT comprises resources occupied by a first feedback channel; the first terminal device excludes reserved resources of the first data associated with the first feedback channel from the candidate set of resources in the selection window, and the first terminal device excludes reserved resources of the first feedback channel from the candidate set of resources.

Based on the scheme, the first terminal equipment excludes reserved resources of the first data from the candidate resource set in the selection window and also excludes reserved resources of the first feedback channel associated with the first data, so that resources for transmitting feedback information of the first data are reserved, and the feedback performance of the first data is guaranteed.

In a possible implementation manner, the method provided by the first aspect may be further described as: under the condition that the candidate resource set of the first terminal equipment in the selection window excludes the reserved resource of the first data associated with the first feedback resource, the first terminal equipment excludes the reserved resource of the first feedback resource in the candidate resource set; and under the condition that the first terminal equipment reserves the reserved resources of the first data associated with the first feedback resources in the candidate resource set in the selection window, the first terminal equipment reserves the reserved resources of the first feedback resources in the candidate resource set.

With reference to the first aspect, in certain implementations of the first aspect, the first data is located at a first COT and/or a second COT, the second COT preceding the first COT.

Based on the above scheme, the scheme provided by the application is not only suitable for the scene that the first data is located in the first COT, but also suitable for the scene that the first data is not located in the first COT.

With reference to the first aspect, in certain implementation manners of the first aspect, the first terminal device excludes reserved resources of the first data associated with the first feedback channel from the candidate resource set in the selection window, and the first terminal device excludes reserved resources of the first feedback channel from the candidate resource set, including: under the condition that the first condition is met, the first terminal equipment excludes reserved resources of the first feedback resources in the candidate resource set, and the first terminal equipment excludes reserved resources of the first feedback resources in the candidate resource set; the first condition includes: the first terminal equipment acquires a reservation period associated with the second data; the reference signal received power RSRP of the second data is greater than or equal to the first threshold, where the second data is the first data, or the second data and the first data are located on the same COT. The first terminal device acquiring the reservation period associated with the second data may also be described as: the information for indicating the second data includes a reserved period, or the second data has a reserved resource corresponding to the reserved period, or the second data is periodic data.

Based on the above scheme, the first terminal device can exclude the reserved resource of the first feedback channel under the condition that the first condition is met, so that the reserved resource of the first feedback channel can be used for transmitting the feedback information of the first data, and the overall performance of the second terminal device for transmitting the first data is improved. In other words, the first terminal device may not exclude the reserved resources of the first feedback channel under the condition that the first condition is not satisfied, so that the first terminal device may transmit by using the reserved resources of the first feedback channel, thereby improving the number of candidate resources available to the first terminal device and improving the transmission performance of the first terminal device.

With reference to the first aspect, in certain implementations of the first aspect, the first condition further includes: the reserved resources of the second data intersect with the candidate set of resources in the resource selection window.

With reference to the first aspect, in certain implementation manners of the first aspect, the excluding, by the first terminal device, reserved resources of the first feedback channel from the candidate resource set includes: the first terminal device excludes part or all of the frequency domain resources on a first time unit from the candidate resource set, wherein the reserved resources of the first feedback channel are located in the first time unit, and the part or all of the frequency domain resources comprise a resource block set where the reserved resources of the first feedback channel are located.

Based on the above scheme, the first terminal device determines that, in the case that the candidate resource set excludes the reserved resource of the first feedback channel, the resource on the first time unit where the reserved resource of the first feedback channel is located can be directly excluded, so that the feedback performance of the first data is further improved.

With reference to the first aspect, in certain implementations of the first aspect, the reserved resources of the first feedback channel include reserved resources for feeding back data within the shared resources of the first COT.

Based on the scheme, the feedback resources on the reserved resources of the first COT can be prevented from being interrupted by excluding the reserved resources corresponding to the first feedback channel, and the transmission performance of the second terminal equipment on the first COT is improved.

With reference to the first aspect, in certain implementations of the first aspect, the method further includes: the first terminal device excludes, from the candidate resource set, reserved resources on the first COT that are located before a first time unit in which the first feedback channel is located.

Based on the above scheme, under the condition that the first terminal device excludes the reserved resource of the first feedback channel from the candidate resource set, the transmission opportunity on the first time unit where the reserved resource of the first feedback channel is located needs to be carried in the whole first COT to be transmitted successfully, so if the reserved resource on the first COT located before the first time unit is excluded, the second terminal device can be ensured to be transmitted successfully on the first time unit at least, thereby improving the transmission performance.

With reference to the first aspect, in some implementations of the first aspect, the first terminal device excludes, from the candidate resource set, a reserved resource located before a time unit where the first feedback channel is located on the first COT, including: in the case that the second condition is satisfied, the first terminal device excludes, in the candidate resource set, a reserved resource located before the time unit where the first feedback channel is located on the first COT, where the second condition includes one or more of the following: the transmission priority carried on the first feedback channel is greater than or equal to a first threshold value, or the first terminal device is receiving device corresponding to the first feedback channel.

Based on the above scheme, if the transmission priority carried on the first feedback channel is greater than or equal to the first threshold, the first terminal device excludes the reserved resource located before the first time unit on the first COT in the candidate resource set, so that the success rate of the transmission of the second terminal device on the first time unit can be further ensured.

With reference to the first aspect, in certain implementations of the first aspect, the method further includes: the first terminal device obtains second information, the second information indicates the first terminal device to determine candidate resources based on the COT, the second information is from the second terminal device or the network device, or the second information is predefined information or preconfigured information.

Based on the above scheme, the first terminal device may determine, according to the acquired second information, to determine candidate resources based on the COT.

With reference to the first aspect, in some implementations of the first aspect, the reserved resource of the first data is a resource determined according to a frequency domain resource, a time domain resource of the first data, and a reservation period indicated by side uplink control information SCI corresponding to the first data.

As an example, the time slot where the reserved resource corresponding to the first data is located isWherein q is a positive integer, m is a time slot where the first data is located, P' _{rsvp_RX} The reservation period of the first data or the reservation period of the first COT where the first data is located. The frequency domain resource in the reserved resource corresponding to the first data is the same as the frequency domain resource of the first data.

In a second aspect, a method for determining resources is provided, which may be performed by the first terminal device, or may be performed by a component (e.g. a chip or a circuit) of the first terminal device, and for convenience, will be described below with reference to the first terminal device being implemented as an example.

The method comprises the following steps: the first terminal equipment receives first information in a sensing window, the first information indicates first channel occupation time COT of the second terminal equipment, reserved resources of the first COT are first resources, and the number of the first resources is N1; the first terminal device excludes second resources from the candidate resource set in the selection window, the number of the second resources is N2, the second resources comprise the first resources, and N2 is larger than N1.

Based on the above scheme, the number of the resources excluded from the candidate resource set by the first terminal device is greater than the number of the reserved resources of the first COT, so that more resources can be reserved for the second terminal device for transmission, the transmission performance of the second terminal device is improved, and the probability of failure in transmitting some data or information of the second terminal device due to resource conflict is reduced.

With reference to the second aspect, in some implementations of the second aspect, the first terminal device excludes the second resource from the candidate resource set in the selection window, including: the first terminal device excludes the second resource from the candidate resource set if it is determined that the physical side uplink feedback channel, PSFCH, is enabled by the first terminal device.

Based on the above scheme, under the condition that the first COT or the data transmitted on the resource pool where the first COT is located enables the PSFCH feedback, the first terminal device excludes N2 second resources from the candidate resource set, so that more resources than the first resources can be reserved for the second terminal device, and the more resources can be used for the second terminal device to send the feedback information of the first COT or other COTs before the first COT, so that the transmission performance of the second terminal device can be improved.

With reference to the second aspect, in certain implementations of the second aspect, N2 is determined according to one or more of the following information: the feedback period corresponding to the first COT, the value of N1, and the number of shared slots on the first COT.

As an example, the value of N2 corresponds to the period corresponding to the first COT, i.e. the greater the feedback period corresponding to the first COT, the greater the value of N2, and conversely the smaller the value of N2.

As another example, the value of N2 corresponds to the value of N1, the greater the value of N2, and the greater the difference between N2 and N1.

As yet another example, the value of N2 corresponds to the number of shared slots in the first COT, the larger the shared slot on the first COT, the larger the value of N2, and conversely the smaller the N2.

Based on the above scheme, the first terminal device can determine the value of N2 according to the actual transmission requirement on the first COT, so that the transmission performance of the second terminal device on the first COT (or the shared time slot of other terminal devices on the first COT) can be improved, the resource utilization rate can be improved, and the resource waste can be reduced.

In a third aspect, a method for determining resources is provided, which may be performed by the second terminal device, or may be performed by a component (e.g. a chip or a circuit) of the second terminal device, and for convenience, will be described below with reference to the second terminal device being implemented as an example.

The method comprises the following steps: the second terminal device determines the third resource according to one or more of the following information: the channel access priority type CAPC of the second terminal equipment corresponds to a maximum COT length mCOT, the number of time units occupied by PSFCH resources configured by the second terminal equipment, and the number of resources to be shared COT, wherein a third resource is reserved for the second terminal equipment by sending second data, the third resource comprises a fourth resource, the fourth resource is a resource for the second terminal equipment to send the second data, the number of the third resource is N2, and the number of the fourth resource is N1, wherein N2 is larger than N1; the second terminal device sends third information to the first terminal device, the third information indicating a third resource.

Based on the above scheme, the second terminal device reserves more resources than the resources actually transmitted, so that the second terminal device has enough resources to transmit (e.g. transmit feedback information) subsequently, thereby improving the transmission performance of the second terminal device.

With reference to the third aspect, in certain implementations of the third aspect, before the second terminal device sends the third information to the first terminal device, the method further includes: the second terminal device receives fourth information, and the fourth information indicates the second terminal device to send third information to the first terminal device.

As an example, the second terminal device receives the fourth information from the network device.

Based on the scheme, the second terminal equipment can send the third information to the first terminal equipment according to the received fourth information, so that the first terminal equipment can determine candidate resources according to reserved resources of the second terminal equipment, and the risk of collision between the first terminal equipment and the second terminal equipment can be reduced.

With reference to the third aspect, in some implementations of the third aspect, the third information directly indicates the third resource, or the third information indicates the fourth resource and a value of N3, where N3 is a difference between N2 and N1.

Based on the scheme, the second terminal equipment can directly indicate the third resource through the third information, so that the cost can be saved, and the indicating efficiency can be improved; or, the third resource can be indicated indirectly through the third information, so that the first terminal device can determine the third resource according to the fourth resource and the value of N3 and according to actual needs, thereby being beneficial to improving the resource utilization rate.

With reference to the third aspect, in certain implementations of the third aspect, the method further includes: the second terminal equipment sends fifth information to the first terminal equipment, wherein the fifth information indicates the number of resources which are excluded from the candidate resource set of the first terminal equipment in the selection window, and the number of the resources is N2 or N1.

Based on the above scheme, the second terminal device may indicate, to the first terminal device, the number of resources excluded from the candidate resource set through the fifth information, so that the first terminal device may determine the candidate resource according to the fifth information, so as to avoid a situation that the first terminal device cannot determine the number of resources to be excluded, and thus the candidate resource determination fails, or the determined candidate resource cannot adapt to the transmission requirement of the second terminal device (for example, the transmission of the first terminal device in the self-determined candidate resource may collide with the transmission of the second terminal device).

In a fourth aspect, a method for determining resources is provided, which may be performed by the first terminal device, or may be performed by a component (e.g. a chip or a circuit) of the first terminal device, and for convenience, will be described below with reference to the first terminal device being implemented as an example.

The method comprises the following steps: the first terminal equipment receives first information in a sensing window, the first information indicates a first COT of the second terminal equipment, the first COT comprises fifth resources, the fifth resources are used for transmitting data, the number of the fifth resources is N1, reserved resources of the first COT are sixth resources, the number of the sixth resources is N2, and N2 is larger than N1; the first terminal device excludes a seventh resource from the set of candidate resources in the selection window, the seventh resource comprising the fifth resource or the sixth resource.

Based on the above scheme, the number (N2) of reserved resources of the first COT is greater than the number (N1) of resources for transmitting data on the first COT, and the first terminal device can exclude N2 resources or N1 resources from the candidate resource set according to actual requirements, so that the resource utilization rate is improved, and the risk of resource collision is reduced.

With reference to the fourth aspect, in certain implementations of the fourth aspect, the method further includes: the first terminal device determines N3.

With reference to the fourth aspect, in some implementations of the fourth aspect, the first terminal device determines N3, including: the first terminal device receives sixth information from the network device or the second terminal device; the first terminal device determines N3 according to the sixth information.

Based on the above scheme, the network device or the second terminal device may indicate, through the sixth information, the number of resources excluded by the first terminal device from the candidate resource set, so that the first terminal device may determine the candidate resource according to the sixth information.

With reference to the fourth aspect, in some implementations of the fourth aspect, the first terminal device determines N3, including: the first terminal equipment determines that the value of N3 is N2 under the condition that the fixed bit rate CBR of the first COT is larger than or equal to a fourth threshold value, otherwise, the first terminal equipment determines that the value of N3 is N1; or under the condition that the first COT enables the hybrid automatic repeat request HARQ, the first terminal equipment determines that the value of N3 is N2, otherwise, the first terminal equipment determines that the value of N3 is N1; or, under the condition that the number of PSFCH resources or the PSFCH resource period configured on the first COT is a first value, the first terminal equipment determines that the value of N3 is N2, and under the condition that the number of PSFCH resources or the PSFCH resource period configured on the first COT is a second value, the first terminal equipment determines that the value of N3 is N1; or, in the case that the reserved resource of the first COT includes a shared resource or a feedback resource, the first terminal device determines that the value of N3 is N2, otherwise, the first terminal device determines that the value of N3 is N1.

Based on the above scheme, in the case that the number of reserved resources (denoted as N2) of the first COT is greater than the number of resources (denoted as N1) for transmitting data on the first COT, the first terminal device may determine, according to a corresponding method or rule, whether to exclude resources by N1 or by N2, so that, from the perspective of the receiving side, the corresponding resources can be excluded in a manner matching with the requirements of the second terminal device, so that the second terminal device may have enough resources available for transmission at the next transmission, thereby improving the transmission performance of the second terminal device.

In a fifth aspect, a method for determining resources is provided, which may be performed by the first terminal device, or may be performed by a component (e.g. a chip or a circuit) of the first terminal device, and for convenience, will be described below with reference to the first terminal device being implemented as an example.

The method comprises the following steps: the first terminal equipment receives first information in a sensing window, wherein the first information indicates first channel occupation time COT of the second terminal equipment; the first terminal device determines whether to exclude an eighth resource from the candidate resource set in the selection window, the eighth resource and the ninth resource being located in a same time unit, and frequency domains of the eighth resource and the ninth resource being different, the ninth resource being a reserved resource of the first data transmitted on the first COT.

The first terminal device excludes the eighth resource from the candidate resource set, which means that the first terminal device does not send data/information on the resource frequency-divided with the ninth resource, or that the first terminal device does not perform frequency division multiplexing on the ninth resource; the first terminal device does not exclude the eighth resource from the candidate resource set, which means that the first terminal device transmits data/information on a resource frequency-divided with the ninth resource, or that the first terminal device performs frequency division multiplexing on the ninth resource.

Based on the above scheme, after the first terminal device detects the first COT, it is determined whether to perform frequency division multiplexing on the resources reserved for the first data sent on the first COT, so as to improve the resource utilization as much as possible.

With reference to the fifth aspect, in certain implementations of the fifth aspect, the method further includes: under the condition that the third condition is met, the first terminal equipment determines reserved resources of first data sent on the first COT; wherein the third condition comprises one or more of: the information indicating the first data comprises a reservation period, or the information indicating the first COT comprises a reservation period; the RSRP of the first data detected by the first terminal equipment in the sensing window is larger than or equal to a first threshold value; the first terminal device obtains fourth information, where the fourth information is used to instruct the first terminal device to select candidate resources based on the COT structure.

Based on the above scheme, the first terminal device can determine the reserved resources of the first data under the condition that certain conditions are met, so as to determine whether to perform frequency division multiplexing on the reserved resources of the first data, thereby improving the resource utilization rate as much as possible.

With reference to the fifth aspect, in some implementations of the fifth aspect, a time slot in which the reserved resource of the first data is located isWherein: q is a positive integer, m is the time slot where the first data is located, P' _{rsvp_RX} A reservation period for the first data or a reservation period for the first COT.

With reference to the fifth aspect, in some implementations of the fifth aspect, the reserved resource of the first data is a resource determined according to a frequency domain resource, a time domain resource of the first data, and a reservation period indicated by side uplink control information SCI corresponding to the first data.

With reference to the fifth aspect, in certain implementations of the fifth aspect, the first terminal device determining whether to exclude the eighth resource from the candidate resource set in the selection window includes: in the case that the fifth condition is satisfied, the first terminal device determines to exclude the eighth resource from the candidate resource set; the fifth condition includes: the first terminal device is a receiving end device of the second terminal device, and/or the first terminal device acquires seventh information, wherein the seventh information indicates that the first terminal device does not perform frequency division multiplexing on a seventh resource, the seventh information is from the second terminal device or the network device, or the seventh information is predefined information or preconfigured information.

With reference to the fifth aspect, in certain implementations of the fifth aspect, the method further includes: in the case that the fifth condition is not satisfied, the first terminal device determines not to exclude the eighth resource from the candidate resource set.

Based on the scheme, the frequency division multiplexing between the first terminal equipment and the second terminal equipment can be realized under certain conditions, so that the utilization efficiency of the whole system resource is improved, and the performance of the whole system is enhanced.

With reference to the fifth aspect, in certain implementations of the fifth aspect, the first terminal device determining whether to exclude the eighth resource from the candidate resource set in the selection window includes: in the case that the sixth condition is satisfied, the first terminal device determines that the eighth resource is not excluded from the candidate resource set; the sixth condition includes: the first terminal device is not a receiving end device of the second terminal device, and/or the first terminal device acquires eighth information, the eighth information indicates the first terminal device to perform frequency division multiplexing on reserved resources of the first data, the eighth information is from the second terminal device or the network device, or the eighth information is predefined information or preconfigured information.

With reference to the fifth aspect, in certain implementations of the fifth aspect, the method further includes: in the case that the sixth condition is not satisfied, the first terminal device determines that the eighth resource is not excluded from the candidate resource set.

With reference to the fifth aspect, in certain implementations of the fifth aspect, the sixth condition further includes: the priority of the first data sent on the first COT is higher than a second threshold value; or, the channel access type of the first data sent on the first COT is higher than a third threshold value.

Based on the above scheme, only the higher priority transmissions can be frequency division multiplexed to increase the number of resources for the potential high priority transmissions.

With reference to the fifth aspect, in certain implementations of the fifth aspect, the sixth condition further includes: the priority of the first data sent on the first COT is lower than a second threshold value; or, the channel access priority of the first data sent on the first COT is lower than a third threshold value.

Based on the above scheme, the transmission with lower priority can be frequency division multiplexed, if the transmission with higher priority is blocked by the transmission with higher priority in the frequency division multiplexing process, the loss caused by the blocking is relatively smaller.

With reference to the fifth aspect, in certain implementations of the fifth aspect, the method further includes: the first terminal device uses one of the cyclic prefix extension CPEs of the second terminal device in the time slot where the first data is located as the CPE of the eighth resource.

Based on the scheme, the first terminal equipment uses CPE of the transmission of the second terminal equipment on the time slot where the first data is located to set CPE of the candidate resource for frequency division multiplexing, and the CPE associated with or determined by the message to be transmitted of the first terminal equipment is not used any more, so that the influence on the transmission of the second terminal equipment can be reduced.

With reference to the fifth aspect, in some implementations of the fifth aspect, the first terminal device uses one of the cyclic prefix extension CPEs of the second terminal device in the time slot where the first data is located as a CPE of an eighth resource, including:

the first terminal device uses a first CPE of a plurality of CPEs of the second terminal device on a time slot where the first data is located as an eighth resource CPE, and the first CPE is larger than or equal to a first threshold value.

Based on the scheme, the transmission performance of the first terminal equipment can be improved.

With reference to the fifth aspect, in some implementations of the fifth aspect, the first CPE is a maximum value of a plurality of CPEs of the second terminal device over a time slot in which the first data is located.

With reference to the fifth aspect, in certain implementations of the fifth aspect, the method further includes:

The first terminal device reports the eighth resource to the higher layer of the first terminal device, and the first terminal device is at the CPE of the sixth resource.

Based on the scheme, the problem of CPE alignment can be solved, and the influence on LBT caused by different timing of the second terminal equipment and the first terminal equipment is avoided.

With reference to the fifth aspect, in some implementations of the fifth aspect, the first data is data sent by the second terminal device, or data sent by other terminal devices on a shared resource on the first COT.

Based on the above-mentioned scheme, the scheme provided in the fifth aspect is applicable to a scenario in which the first data is data sent by the second terminal device, and is also applicable to a scenario in which the first data is data sent by other terminal devices.

With reference to the fifth aspect, in certain implementations of the fifth aspect, the synchronization source of the first terminal device and the second terminal device is the same; and/or the type of the synchronization source of the first terminal device and the second terminal device is the same; and/or the first terminal device and the second terminal device are synchronized to the same type of synchronization source for the same forwarding times.

Based on the above scheme, by setting that the synchronization sources of the first terminal device and the second terminal device are the same (or the synchronization source types), no timing difference between the first terminal device and the second terminal device can be ensured, so that the problem that the transmission of the first terminal device and the transmission of the second terminal device are mutually blocked due to the timing difference is avoided.

In a sixth aspect, a method for determining resources is provided, which may be performed by the first terminal device, or may be performed by a component (e.g. a chip or a circuit) of the first terminal device, and for convenience, will be described below with reference to the first terminal device being implemented as an example.

The method comprises the following steps: the first terminal equipment receives first information in a sensing window, wherein the first information indicates information of first channel occupation time COT of the second terminal equipment; under the condition that the first terminal equipment determines that the eighth condition is met, the first terminal equipment excludes reserved resources of first to Mth continuous time units on a first COT in a candidate resource set, wherein M is a positive integer which is greater than or equal to 1, and a selection window is positioned behind a perception window; the eighth condition includes: the first to mth continuous time units on the first COT are used for periodic transmission and/or the reference signal received power RSRP on the M continuous time units is less than or equal to a sixth threshold.

Based on the above scheme, the first terminal device preferentially excludes the reserved resources of the previous M continuous time units on the first COT from the candidate resource set, so that the transmission of the second terminal device on the first COT can be prevented from being interrupted in the middle, and the transmission performance of the second terminal device is improved.

With reference to the sixth aspect, in certain implementations of the sixth aspect, the eighth condition further includes: the priority of the first data transmitted over the first M consecutive time units on the first COT is greater than or equal to the seventh threshold.

Based on the above scheme, when the transmission priority carried on the previous M continuous time units on the first COT is higher, the M continuous time units are preferentially excluded from the candidate resource set, so that the transmission with higher priority can be preferentially ensured to be successfully carried out, and the transmission performance of the second terminal device (or possibly other terminal devices) on the M continuous time units is improved.

In a seventh aspect, a method for determining resources is provided, which may be performed by the first terminal device, or may be performed by a component (e.g. a chip or a circuit) of the first terminal device, and for convenience, will be described below with reference to the first terminal device being implemented as an example.

The method comprises the following steps: the first terminal equipment receives first information in a sensing window, wherein the first information is used for indicating information of first channel occupation time COT of the second terminal equipment; in case the first terminal device determines to exclude reserved resources of the first time unit on the first COT from the candidate set of resources in the selection window, the first terminal device excludes reserved resources of the first COT located before the first time unit from the candidate set of resources.

Based on the above scheme, under the condition that the first terminal equipment determines to exclude the reserved resources of the first time unit, the first terminal equipment excludes the reserved resources between the first time units because the transmission opportunity on the first time unit carries the whole first COT to be successfully transmitted, so that the transmission of the second terminal equipment on the first time unit can be ensured at least, and the transmission performance of the second terminal equipment is improved.

With reference to the seventh aspect, in some implementations of the seventh aspect, the first terminal device excludes, from the candidate resource set, a reserved resource located before the first time unit on the first COT, including: under the condition that the ninth condition is met, the first terminal equipment excludes reserved resources which are positioned in front of the first time unit on the first COT from the candidate resource set; the ninth condition includes one or more of: the transmission priority carried on the first time unit is greater than or equal to a seventh threshold value; the first terminal equipment is receiving equipment of information transmitted on a first time unit; the first time unit is not the last time unit on the first COT.

Based on the above scheme, the first terminal device may exclude, in the candidate resource set, the reserved resource located before the first time unit on the first COT, if a certain condition is satisfied. For example, in the case that the transmission priority carried on the first time unit is higher, the reserved resource before the first time unit is excluded, so that the transmission with higher priority can be ensured to be successfully performed, thereby improving the transmission performance.

In an eighth aspect, a method for determining resources is provided, where the method may be performed by the first terminal device, or may be performed by a component (e.g. a chip or a circuit) of the first terminal device, and for convenience, an example of the method performed by the first terminal device is described below.

The method comprises the following steps: the first terminal equipment receives first information in a sensing window, wherein the first information is used for indicating information of first channel occupation time COT of the second terminal equipment; in case the first terminal device determines that reserved resources of a first time unit on the first COT are not excluded from the set of candidate resources within the selection window, the first terminal device does not exclude reserved resources of all time units on the first COT from the set of candidate resources, the all time units comprising the first time unit.

Based on the above scheme, when the first terminal device does not exclude the first time unit in the first COT, the first terminal device does not exclude reserved resources of all time units on the first COT, so that the problem of partial resource waste caused by interruption of transmission on the first COT is avoided, and the use efficiency of resources can be improved.

With reference to the eighth aspect, in certain implementations of the eighth aspect, the total time units on the first COT include one or more of: a time unit on the first COT for the second terminal device to send data; sharing a time unit for sending data to other terminal equipment by the second terminal equipment on the first COT; the time unit is used for the second terminal equipment to transmit feedback information on the first COT; and a time unit on the first COT for the second terminal equipment to send the synchronous signal.

With reference to the eighth aspect, in some implementations of the eighth aspect, the reserving resources of all time units on the first COT are not excluded by the first terminal device in the candidate resource set, including: in case the tenth condition is met, the first terminal device does not exclude reserved resources of all time units on the first COT at the candidate set of resources; the tenth condition includes one or more of the following: the priority of the first time unit in the COT is smaller than or equal to an eighth threshold value; or, the priority of the transmission carried in the first time unit is greater than or equal to a ninth threshold value; or, the first time unit is the kth time unit in the first COT, and k is less than or equal to the tenth threshold value.

Based on the above scheme, when the first terminal device does not exclude the first time unit in the first COT, if the transmission on the first time unit is the transmission with the higher priority (greater than the preset threshold value) in the first COT or is located in front of the first time unit in the first COT (such as the first time unit in the first COT), if the first terminal device does not exclude the reserved resource of the first time unit (i.e. the first terminal device occupies the reserved resource of the first time unit), the transmission on the first COT may be interrupted, and at this time, the first terminal device does not exclude the reserved resource of all time units on the first COT, but can improve the use efficiency of the resource.

With reference to the eighth aspect, in certain implementations of the eighth aspect, the method further includes: the first terminal device acquires ninth information, the ninth information indicating that the first terminal device determines candidate resources based on the COT, the ninth information being from the second terminal device or the network device, or the ninth information being predefined information or preconfigured information.

Based on the above scheme, the first terminal device may determine, according to the first information, to determine the candidate resource based on the COT.

A ninth aspect provides a communication device for performing the method of any one of the first to eighth possible implementation manners of the above first aspect. In particular, the apparatus may comprise means and/or modules, such as a processing unit and/or a communication unit, for performing the method in any of the possible implementations of the first to eighth aspects.

In one implementation, the apparatus is a terminal device (e.g., a first terminal device, and also a second terminal device). When the apparatus is a terminal device, the communication unit may be a transceiver, or an input/output interface; the processing unit may be at least one processor. Alternatively, the transceiver may be a transceiver circuit. Alternatively, the input/output interface may be an input/output circuit.

In another implementation, the apparatus is a chip, a system-on-chip, or a circuit for a terminal device (e.g., a first terminal device, and also e.g., a second terminal device). When the apparatus is a chip, a system-on-chip or a circuit for a terminal device, the communication unit may be an input/output interface, an interface circuit, an output circuit, an input circuit, a pin or a related circuit, etc. on the chip, the system-on-chip or the circuit; the processing unit may be at least one processor, processing circuit or logic circuit, etc.

In a tenth aspect, there is provided a communication apparatus comprising: at least one processor configured to execute a computer program or instructions stored in a memory to perform a method according to any one of the possible implementations of the first to fourth aspects. Optionally, the apparatus further comprises a memory for storing a computer program or instructions. Optionally, the apparatus further comprises a communication interface through which the processor reads the computer program or instructions stored in the memory.

In one implementation, the apparatus is a terminal device (e.g., a first terminal device, and also a second terminal device).

In another implementation, the apparatus is a chip, a system-on-chip, or a circuit for a terminal device (e.g., a first terminal device, and also e.g., a second terminal device).

In an eleventh aspect, the present application provides a processor for performing the methods provided in the first to eighth aspects above.

The operations such as transmitting and acquiring/receiving, etc. related to the processor may be understood as operations such as outputting and receiving, inputting, etc. by the processor, or may be understood as operations such as transmitting and receiving by the radio frequency circuit and the antenna, if not specifically stated, or if not contradicted by actual function or inherent logic in the related description, which is not limited in this application.

In a twelfth aspect, a computer readable storage medium is provided, the computer readable storage medium storing program code for execution by a device, the program code comprising instructions for performing the method of any one of the possible implementations of the first to eighth aspects.

In a thirteenth aspect, there is provided a computer program product comprising instructions which, when run on a computer, cause the computer to perform the method of any one of the possible implementations of the first to eighth aspects described above.

A fourteenth aspect provides a communication system comprising the first terminal device and the second terminal device as described above.

Drawings

Fig. 1 and 2 are schematic diagrams of network architectures suitable for use in embodiments of the present application.

Fig. 3 shows a schematic diagram of a mode2 resource allocation manner according to an embodiment of the present application.

Fig. 4 shows a schematic diagram of reserved resources according to an embodiment of the present application.

Fig. 5 illustrates an exemplary flowchart of a method 500 for determining candidate resources provided by an embodiment of the present application.

Fig. 6 to 8 are schematic diagrams illustrating a method for determining three candidate resources according to an embodiment of the present application.

Fig. 9 illustrates an exemplary flowchart of a method 900 for determining candidate resources provided by an embodiment of the present application.

Fig. 10 is a schematic diagram of a method for determining candidate resources according to an embodiment of the present application.

Fig. 11 illustrates an exemplary flowchart of a method 1100 for determining candidate resources provided by an embodiment of the present application.

Fig. 12 illustrates an exemplary flowchart of a method 1200 for determining candidate resources provided by an embodiment of the present application.

Fig. 13 illustrates an exemplary flowchart of a method 1300 of determining candidate resources provided by an embodiment of the present application.

Fig. 14 is a schematic diagram of a method for determining candidate resources according to an embodiment of the present application.

Fig. 15 illustrates an exemplary flowchart of a method 1500 for determining candidate resources provided by an embodiment of the present application.

Fig. 16 is a schematic diagram of a method for determining candidate resources according to an embodiment of the present application.

Fig. 17 illustrates an exemplary flowchart of a method 1700 for determining candidate resources provided by an embodiment of the present application.

Fig. 18 is a schematic diagram of a method for determining candidate resources according to an embodiment of the present application.

Fig. 19 illustrates an exemplary flowchart of a method 1900 for determining candidate resources provided by an embodiment of the present application.

Fig. 20 is a schematic diagram of a method for determining candidate resources according to an embodiment of the present application.

Fig. 21 is a schematic block diagram of a communication device 700 provided in an embodiment of the present application.

Fig. 22 is a schematic block diagram of a communication device 800 provided in an embodiment of the present application.

Fig. 23 is a schematic block diagram of a chip system 900 provided in 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 described in further detail with reference to the accompanying drawings.

The technical scheme provided by the application can be applied to various communication systems, such as: fifth generation (5th generation,5G) or New Radio (NR) systems, long term evolution (long term evolution, LTE) systems, LTE frequency division duplex (frequency division duplex, FDD) systems, LTE time division duplex (time division duplex, TDD) systems, and the like. The technical scheme provided by the application can also be applied to future communication systems, such as a sixth generation (6th generation,6G) mobile communication system. The technical solutions provided herein may also be applied to device-to-device (D2D) communication, vehicle-to-everything (V2X) communication, machine-to-machine (machine to machine, M2M) communication, machine type communication (machine type communication, MTC), and internet of things (internet of things, ioT) communication systems or other communication systems.

Fig. 1 shows a schematic diagram of a communication architecture suitable for use in embodiments of the present application. As shown in fig. 1, the communication system of the present application includes at least two terminal devices (e.g., a first terminal device and a second terminal device in fig. 1), which can communicate via a Sidelink (SL) carrier. Wherein the side-link characterizes a connection relationship between the terminal device and the terminal device as a logical concept rather than a physical entity. The side links are only names made for distinction, and their specific names do not limit the scope of the present application.

It is understood that the second terminal device may be a certain receiving end device when the first terminal device performs unicast communication, or a certain receiving end device when the first terminal device performs multicast communication, or a certain receiving end device when the first terminal device performs broadcast communication, which is not limited in this application.

Optionally, the configuration information during SL communication between the terminal device and the terminal device, such as time-frequency resources during SL communication between the terminal device and the terminal device, may be configured or scheduled by the network device, or may be selected by the terminal device independently, which is not limited in this application.

As an example, SL communication between the first terminal device and the second terminal device may be used for internet of vehicles or intelligent transportation systems (intelligent transportation system, ITS), such as V2X communication. Wherein the V2X communication may include: vehicle-to-vehicle (V2V) communication, vehicle-to-infrastructure (V2I) communication, vehicle-to-pedestrian (V2P) communication, vehicle-to-network (V2N) communication. V2V refers to communication between vehicles. V2P refers to vehicle-to-person communication including pedestrians, cyclists, drivers, or passengers, etc. V2I refers to the communication of a vehicle with an infrastructure, such as a Road Side Unit (RSU) or network device. Among them, RSUs include two types: the terminal type RSU is in a non-moving state because the terminal type RSU is distributed at the roadside, and mobility does not need to be considered; the base station type RSU may provide timing synchronization and resource scheduling for vehicles with which it communicates. V2N refers to the communication of the vehicle with the network device. It is to be understood that the foregoing is illustrative and that the embodiments of the present application are not limited. For example, V2X may also include Rel-16 of the current 3GPP and subsequent releases of NR system based V2X communications, and so on.

It can be understood that the first terminal device and the second terminal device may both be within a coverage area of the network device, or both may be outside the coverage area of the network device (out-of-coverage), or one may be within the coverage area of the network device, or one may be outside the coverage area of the network device. It is further understood that the first terminal device may be connected to other terminal devices than the second terminal device (i.e., the first terminal device is connected to a plurality of terminal devices), and the second terminal device may be connected to other terminal devices than the first terminal device (i.e., the second terminal device is connected to a plurality of terminal devices), which is not limited in this application. Several possible network architectures to which the communication system shown in fig. 1 may be adapted are described below in connection with fig. 2.

As shown in fig. 2 (a), the first terminal device and the second terminal device are both within the coverage of the network device, and thus both the first terminal device and the second terminal device can communicate with the network device. The communication between the network device and the terminal device may be performed through a Uu interface, and a link (link) between the network device and the terminal device may be referred to as a Uu link. Wherein Uu link characterizes a connection relationship between terminal equipment and network equipment, and is a logic concept, not a physical entity. The primary link is just a name for distinction, and its specific name does not limit the scope of protection of the present application.

It will be appreciated that the network device and the terminal device may communicate directly, or may communicate indirectly through other relay devices, which is not limited in this application.

As shown in fig. 2 (b), the first terminal device is located within the coverage area of the network device, the second terminal device is located outside the coverage area of the network device, and the first terminal device is connected to the network device and the second terminal device. The first terminal device may communicate directly with the network device and the second terminal device may communicate with the network device through the first terminal device. Or in another scenario (not shown in the figure), the second terminal device is located in the coverage area of the network device, the first terminal device is located outside the coverage area of the network device, the second terminal device may directly communicate with the network device, and the first terminal device may communicate with the network device through the second terminal device.

As shown in fig. 2 (c), the first terminal device is located within the coverage of the network device, the second terminal device and the third terminal device are located outside the coverage of the network device, and the first terminal device is connected to the network device, and the second terminal device and the third terminal device. The first terminal device may communicate directly with the network device, and the second terminal device and the third terminal device may communicate with the network device through the first terminal device.

As shown in (d) of fig. 2, the first terminal device, the second terminal device, and the third terminal device are all out of coverage of the network device, and the first terminal device is connected to the second terminal device, and the second terminal device is connected to the first terminal device and the third terminal device.

As shown in fig. 2 (e), the first terminal device, the second terminal device, and the third terminal device are all out of coverage of the network device, and the first terminal device is connected to the second terminal device and the third terminal device, respectively (here, it is not limited whether there is a connection between the second terminal device and the fourth terminal device).

As shown in fig. 2 (f), the first to fourth terminal devices are only out of coverage of the network device, and the first terminal device is connected with the second terminal device, and the second terminal device is connected with the third terminal device and the fourth terminal device.

It will be appreciated that the various network architectures shown in fig. 2 are merely simplified schematic illustrations for ease of understanding, and that other network devices and other terminal devices may be included in the communication system to which the present application is applicable, which are not shown in fig. 2. The embodiment of the application can be applied to any communication scene of communication between the sending end equipment and the receiving end equipment.

The terminal device according to the embodiment of the present application may be a device that provides voice/data to a user, for example, a handheld device having a wireless connection function, an in-vehicle device, or the like. Currently, some examples of terminals are: a mobile phone, tablet, laptop, palmtop, mobile internet device (mobile internet device, MID), wearable device, virtual Reality (VR) device, augmented reality (augmented reality, AR) device, wireless terminal in industrial control (industrial control), wireless terminal in unmanned (self driving), wireless terminal in teleoperation (remote medical surgery), wireless terminal in smart grid (smart grid), wireless terminal in transportation security (transportation safety), wireless terminal in smart city (smart city), wireless terminal in smart home (smart home), cellular phone, cordless phone, session initiation protocol (session initiation protocol, SIP) phone, wireless local loop (wireless local loop, WLL) station, personal digital assistant (personal digital assistant, PDA), handheld device with wireless communication function, computing device or other processing device connected to wireless modem, wearable device, terminal device in 5G network or terminal in future evolved land mobile communication network (public land mobile network), and the like, without limiting the present application.

By way of example, and not limitation, in embodiments of the present application, the terminal device may also be a wearable device. The wearable device can also be called as a wearable intelligent device, and is a generic name for intelligently designing daily wear by applying wearable technology and developing wearable devices, such as glasses, gloves, watches, clothes, shoes and the like. The wearable device is a portable device that is worn directly on the body or integrated into the clothing or accessories of the user. The wearable device is not only a hardware device, but also can realize a powerful function through software support, data interaction and cloud interaction. The generalized wearable intelligent device includes full functionality, large size, and may not rely on the smart phone to implement complete or partial functionality, such as: smart watches or smart glasses, etc., and focus on only certain types of application functions, and need to be used in combination with other devices, such as smart phones, for example, various smart bracelets, smart jewelry, etc. for physical sign monitoring.

In the embodiment of the present application, the device for implementing the function of the terminal device, that is, the terminal device, may be the terminal device, or may be a device capable of supporting the terminal device to implement the function, for example, a chip system or a chip, and the device may be installed in the terminal device. In the embodiment of the application, the chip system may be formed by a chip, and may also include a chip and other discrete devices.

The network device in the embodiments of the present application may be a device for communicating with a terminal device, which may also be referred to as an access network device or a radio access network device, e.g. the network device may be a base station. The network device in the embodiments of the present application may refer to a radio access network (radio access network, RAN) node (or device) that accesses the terminal device to the wireless network. The base station may broadly cover or replace various names in the following, such as: a node B (NodeB), an evolved NodeB (eNB), a next generation NodeB (gNB), a relay station, an access point, a transmission point (transmitting and receiving point, TRP), a transmission point (transmitting point, TP), a master station, a secondary station, a multi-mode radio (motor slide retainer, MSR) node, a home base station, a network controller, an access node, a radio node, an Access Point (AP), a transmission node, a transceiver node, a baseband unit (BBU), a remote radio unit (remote radio unit, RRU), an active antenna unit (active antenna unit, AAU), a radio head (remote radio head, RRH), a Central Unit (CU), a Distributed Unit (DU), a positioning node, and the like. The base station may be a macro base station, a micro base station, a relay node, a donor node, or the like, or a combination thereof. A base station may also refer to a communication module, modem, or chip for placement within the aforementioned device or apparatus. The base station may be a mobile switching center, a device that performs a base station function in D2D, V2X, M M communication, a network side device in a 6G network, a device that performs a base station function in a future communication system, or the like. The base stations may support networks of the same or different access technologies. The embodiment of the application does not limit the specific technology and the specific device form adopted by the network device.

The base station may be fixed or mobile. For example, a helicopter or drone may be configured to act as a mobile base station, and one or more cells may move according to the location of the mobile base station. In other examples, a helicopter or drone may be configured to function as a device to communicate with another base station.

In some deployments, the network device mentioned in the embodiments of the present application may be a device including a CU, or a DU, or a device including a CU and a DU, or a device of a control plane CU node (central unit-control plane, CU-CP) and a user plane CU node (central unit-user plane, CU-UP) and a DU node.

In the embodiment of the present application, the means for implementing the function of the network device may be the network device, or may be a means capable of supporting the network device to implement the function, for example, a chip system or a chip, and the means may be installed in the network device. In the embodiment of the application, the chip system may be formed by a chip, and may also include a chip and other discrete devices.

Network devices and terminal devices may be deployed on land, including indoors or outdoors, hand-held or vehicle-mounted; the device can be deployed on the water surface; but also on aerial planes, balloons and satellites. In the embodiment of the application, the scene where the network device and the terminal device are located is not limited.

In order to facilitate understanding of the technical solutions of the embodiments of the present application, before describing the solutions of the embodiments of the present application, some terms or concepts that may be related to the embodiments of the present application are first described.

1. Licensed spectrum and unlicensed spectrum

In order to fully, reasonably and effectively utilize radio spectrum resources, normal operation of radio services is ensured, and frequency bands are prevented from being divided by mutual interference among various radio services, radio stations and systems. Currently, the spectrum used by wireless communication systems is largely divided into two categories, licensed spectrum (licensed spectrum) and unlicensed spectrum (unlicensed spectrum).

Licensed spectrum is a spectrum resource that needs to be applied for use by network devices (telecom operators), and has the characteristics of small interference and safety.

Unlicensed spectrum is a spectrum resource that can be used free of charge without application, mainly as a supplementary tool for operators to enhance their services. In unlicensed spectrum, a communication device may use spectrum resources in a competing manner. SL communication over unlicensed spectrum may be referred to as SL-U, and NR cellular communication over unlicensed spectrum may be referred to as NR-U. SL UEs, NR UEs, and Wi-Fi UEs, bluetooth UEs, etc. may all transmit on unlicensed spectrum.

One possible approach is for the communication device to contend for the channel by listen-before-talk (LBT) to use unlicensed spectrum resources.

2. LBT

LBT is a random back-off (random back-off) based channel access mechanism. Since the availability of channels on unlicensed bands cannot be guaranteed at any time, LBT requires that the UE first perceive (sense) whether a channel is idle before accessing the channel and starting to transmit data. The channel may be occupied if it has remained idle for a certain time, and may be occupied if it is not idle, waiting for the channel to resume idle. One possible implementation employs energy-based detection and signal type detection to determine whether a channel is idle. Taking the detection of energy as an example, when the detected energy exceeds a detection threshold, it is determined that the channel is busy, i.e. access to the channel is not allowed. When the detected energy is lower than the detection threshold and lasts for a period of time, the channel is judged to be idle, and the channel is allowed to be accessed.

The channel access procedure includes type1 (type 1) LBT and type2 LBT. Wherein type1 LBT is based on a back-off, the time of which is related to a channel access priority class (channel access priority class, CAPC), which requires a channel to be idle for a long time to be accessed. type2 LBT requires only a short time (e.g., 16us or 25 us) for the channel to be idle for the UE to access the channel, mainly when the channel occupancy time (channel occupancy time, COT) is shared.

3. COT (chip on board)

Channel occupancy (channel occupancy, CO) refers to the transmission of a UE on one or more channels after performing a channel access procedure. If a UE obtains channel usage rights through LBT, the UE may occupy the channel for a period of time, which may be referred to as COT. COT may be a time concept, i.e., the time of SL transmission; or a concept of a resource, i.e. a time-frequency resource occupied by SL transmission.

The UE transmission cannot exceed the limit of the maximum channel occupation time (maximum channel occupancy time, MCOT), which can be denoted as T _mot,p . T for different CAPCs _mot,p The values of (2) are different as shown in table 1 or table 2. Wherein CW in tables 1 and 2 _p For contention window (contention window), CW _min,p For the contention window minimum, CW _min,p Is the contention window maximum.

TABLE 1

TABLE 2

4. COT sharing and sharing resources

Unlicensed spectrum resources may be shared between UEs. For example, if a UE obtains channel usage rights through LBT, the UE may co-occupy the channel with other devices, a process that is COT sharing. The UE may share the channel usage rights in the COT to other devices, and the resources used by the UE to share to other UEs in the COT may be referred to as shared resources, where the shared resources include time domain resources and frequency domain resources, and other devices may transmit data or control information through the shared resources.

5. Time-frequency resource

The time domain resources and the frequency domain resources may be collectively referred to as time-frequency resources, which may be used to transmit data or control information.

In the time domain, a time-frequency resource may comprise one or more time units (alternatively, may also be referred to as time-domain units). A time unit may be any minimum time unit for transmitting data or control information, such as a slot (slot) including 14 symbols, or a mini-slot (mini-slot) including 7 symbols, or a partial slot, or a symbol, or a subframe (subframe), or a radio frame (frame).

In the frequency domain, the time-frequency resource may include one or more frequency domain units. A frequency domain unit may be a Resource Element (RE), or a Resource Block (RB), or a subchannel, or an interlace, or a resource pool, or a bandwidth part, or a bandwidth set (BWP), a resource block set (RB set), or a carrier, or a channel, or an interlace, RB, etc. Alternatively, an RBset may be the number of available resources over a bandwidth size of a predefined size. For example, one RB set corresponds to the number of available resources on the 20MHz bandwidth. Alternatively, the sub-channel may be a frequency domain resource unit including a preset number of continuous RBs, or may be a frequency domain resource unit including a preset number of discontinuous RBs, which is not limited in this application.

6. Resource pool

NR SL communication is performed based on a resource pool (resource pool), which refers to a block of time-frequency resources dedicated to SL communication. The resource pool contains contiguous frequency domain resources. The time domain resources contained in the resource pool can be continuous or discontinuous. The different resource pools are distinguished by SL-resource pal ids. The UE receives on the receive resource pool and transmits on the transmit resource pool. If the resource pools have the same resource pool index, the time-frequency resources of the resource pools may be considered to be fully overlapping.

In SL-U, since the frequency band is shared by multiple forms of UEs, e.g., SL UE is transmitted on the same frequency band as Wi-Fi UE, bluetooth UE. The SL resource pool may also be understood as a collection of resources that may be used for SL transmissions. In this embodiment, the resource pool may also be referred to as a channel (channel), an operating channel (Operating channel), a nominal channel (Nominal Channel Bandwidth) bandwidth (bandwidth). I.e. resource pool, channel, bandwidth are all used to represent the set of resources that can be used for SL transmission.

Alternatively, one resource pool may include one or more RB sets.

7. SL resource allocation mode

The resource allocation (resource allocation, RA) in SL transmission can be divided into two modes (modes) according to the resource allocation body: mode 1 (mode 1) and mode 2 (mode 2). In mode 1, time-frequency resources used for SL transmissions are centrally scheduled by the network device; in mode 2, the time-frequency resources used for SL transmissions are determined by the terminal device. The resource allocation method in mode 2 is briefly described below.

As shown in fig. 3, in mode2, one time point and two time windows are defined. The time point refers to: the higher layer (higher layer) of the terminal device triggers the time slots for resource selection for the transmission of PSCCH and/or PSSCH. As shown in fig. 3, this time slot may be referred to as time slot n. One of the two time windows is a sensing window (sensing window), which refers to a window used when the terminal equipment senses the occupation condition of the surrounding time-frequency resources. The perceptual window may illustratively correspond to the slot range n-T in FIG. 2 ₀ ,n-T _proc,0 ]. The other window of the two time windows is a selection window (selection window), which is used when the terminal device determines a candidate resource (simply called resource) based on a sensing result in the sensing window, and the selection window is located after the sensing window in the time domain. The selection window may correspond to the slot range [ n+T ] in FIG. 2 ₁ ,n+T ₂ ]。

Based on the above description, a brief description is given of the basic flow of the resource allocation mode 2.

Let the set of timeslots of the resource pool be defined as

Step 1, a terminal determines a selection window [ n+T ] ₁ ,n+T ₂ ]。

Where n is the time at which the resource selection is triggered.

Wherein T is ₁ The value of (c) depends on the implementation of the terminal, but T ₁ The requirements are satisfied:wherein (1)>The value is related to the subcarrier spacing. For example, a->The values of (2) can be determined from Table 1, table 3 shows +.>Is a value of (a).

TABLE 3 Table 3

Wherein T is ₂ Is taken by the value of (1) and T ₂ Is related to the remaining packet delay budget (packet delay budget, PDB). For example, if T _2min Is smaller than PDB, T ₂ The value of (c) depends on the implementation of the terminal, but T ₂ The requirements are satisfied: t (T) _2min ≤T ₂ PDB is not more than; if T _2min Is greater than PDB, T ₂ Is PDB, where T _2min Is T ₂ The PDB is in units of time slots.

In the selection window [ n+T ] ₁ ,n+T ₂ ]The total number of single candidate resources in the resource pool is recorded as M _total 。

Step 2, the terminal determines a sensing window

Where n is the time at which the resource selection is triggered.

Wherein T is ₀ Is and perceives the windowThe number of corresponding time slots.

Wherein,the value of (2) is related to the subcarrier spacing. For example, a->Is of the value of (2)It can be determined from Table 4, table 4 shows +.>Is a value of (a).

TABLE 4 Table 4

Step 3, the terminal obtains the sensing windowThe result of the perception in the model.

Wherein the perceived result may include at least one of: PSCCH decoding results and RSRP measurement results.

And step 4, the terminal determines resources for transmitting the PSSCH according to the sensing result.

One possible implementation, assume that the set of resources used to transmit the PSSCH is S _A ，S _A The initial value is in the selection window [ n+T ] ₁ ,n+T ₂ ]The set of candidate resources in the lower resource pool 1. Terminal slave S _A Excluding a single candidate resource R that simultaneously satisfies the following conditions _x,y 。

Condition 1: side-uplink control information (sidelink control information, SCI) is received and includes a resource reservation period field, and a priority field.

For example, the terminal is in a time slotThe SCI is received and includes a resource reservation period field, and a priority field. Wherein the resource reservation period field indicates _{prsvp_RX} The priority field indicates prio _RX 。

Condition 2: the RSRP measured value corresponding to the reserved resource indicated by SCI is higher than RSRP threshold value a.

Wherein A is Th (p _{rsvp_RX} ,prio _RX )。

Condition 3: the single candidate resource overlaps with the reserved resource indicated in the SCI.

For example, the terminal is in a time slotReceiving an SCI including a resource reservation period field, the terminal expects to be in slot +.>The same SCI can be received, terminal determination and +.>Overlapping sets of RBs and slots.

Where q=1, 2, where, Q, j=0, 1, C _resel -1，C _resel A main integer. Here P' _{rsvp_RX} Is to p _{rsvp_RX} Converted into logical time slots. If p is _{rsvp_RX} <T _scal And n '-m is less than or equal to p' _{rsvp_RX} ，Wherein if time slot n belongs to the set +.>Otherwise time slot->Time slot n is followed by the set->Is the first time slot of (a); otherwise q=1. T (T) _scal Is to T ₂ Converted into units of milliseconds (msec).

Then, the terminal judges S _A Whether the number of single candidate resources in the list is greater than X.M _total . If S _A The number of single candidate resources in the system is smaller than X.M _total The terminal sets the RSRP threshold Th (p _{rsvp_RX} ,prio _RX ) Increment 3dB and re-perform the process of exclusion. If S _A The number of single candidate resources in the system reaches X.M _total The exclusion process is ended, the current S _A Is a single set of candidate resources that can be used to transmit the PSSCH.

Step 5, the terminal determines S _A Reporting to the higher layer of the terminal equipment so that the higher layer of the terminal equipment can report S according to _A To determine the resources used to transmit the PSSCH. Optionally, the higher layers of the terminal device are layers above the physical layer, such as a MAC layer, an RRC layer, a PDCP layer, and the like, which is not limited in this application. Alternatively S _A Can be regarded as resources available to the terminal device.

8. Reserved resources

Reserved resources in the embodiments of the present application refer to resources reserved for transmitting data or information, including time domain resources and frequency domain resources. The reserved resources may be periodically distributed and the time interval between two adjacent reserved resources may be referred to as a reservation period (Reservation period), or a resource reservation period (Resource Reservation period).

Illustratively, fig. 4 shows a schematic diagram of reserved resources. In fig. 4, R1 is a resource (illustrated by a solid line in the figure) for transmitting the first data, including a time domain resource and a frequency domain resource of the first data. In fig. 4, R2, R3, and R4 are reserved resources (illustrated by dotted lines) corresponding to the first data. It will be appreciated that fig. 4 shows 3 reserved resources corresponding to the first data, but in actual transmission, the first data may only correspond to one or two reserved resources, or may correspond to four or more reserved resources, which is not limited in this application.

In one example, the reserved resource corresponding to the first data is a resource determined from a frequency domain resource, a time domain resource of the first data, and a reservation period indicated by the SCI corresponding to the first data. For example, SCI corresponding to the first data is in a time slotIs received, the time slot of the corresponding reserved resource is +.>Wherein q is a positive integer, P' _{rsvp_RX} The reservation period of the first data or the reservation period of the first COT where the first data is located. Optionally, for a reservation period, P _{rsvp_RX} Reservation period in milliseconds (ms), P 'indicated for SCI of first data' _{rsvp_RX} Is P _{rsvp_RX} The indicated reservation period translates to a reservation period on the logical time slot. Optionally, the frequency domain resource in the reserved resource corresponding to the first data is the same as the frequency domain resource of the first data. The frequency domain resource in the reserved resource corresponding to the first data is the same as the frequency domain resource of the first data.

The following is a description in connection with the example in fig. 4.

If the "resource reservation period" field in the SCI corresponding to the first data is not null or is a positive integer, the reserved resources R2, R3, and R4 may be determined according to the reserved period indicated by the "resource reservation period" field and the time domain resource and the frequency domain resource corresponding to the R1 resource. For example, the time interval between the starting position of the time slot where R2 is located and the starting position of the time slot where R1 is located is a reserved period, the ending position of the time slot where R2 is located and the ending position of the time slot where R1 is located are also reserved periods, and the frequency domain resource of R2 is the same as the frequency domain resource of R1. Similarly, the time interval between the starting position of the time slot where R3 is located and the starting position of the time slot where R2 is located is a reserved period, the ending position of the time slot where R3 is located and the ending position of the time slot where R2 is located are also reserved periods, and the frequency domain resource of R3 is the same as the frequency domain resource of R2. The time interval between the starting position of the time slot where R4 is located and the starting position of the time slot where R3 is located is a reserved period, the ending position of the time slot where R4 is located and the ending position of the time slot where R3 is located are reserved periods, and the frequency domain resource of R4 is the same as the frequency domain resource of R3.

9. Feedback channel

Broadcast is supported in LTE V2X, i.e. the transmitting terminal transmits data without any limitation to the receiving terminal. On this basis, unicast and multicast are introduced in NR V2X. Unicast, i.e. communication between a pair of terminals, multicast, i.e. transmitting terminals transmit data and a limited number of intra-group terminals receive.

HARQ feedback is supported in unicast and multicast. The unicast and the multicast support the feedback mode of ACK/NACK, namely, the receiving terminal feeds back the ACK when successfully receiving the data, and feeds back the NACK when not successfully receiving the data. In addition, the multicast also supports a NACK only feedback mode, namely, a plurality of receiving terminals only feed back NACK on the same control resource, namely, the receiving terminals feed back NACK when not successfully receiving data, and do not send any feedback signals when successfully receiving data.

The unicast and multicast HARQ information is carried using a feedback channel, which may specifically be a physical sidelink feedback channel (physical sidelink feedback channel, PSFCH).

As a possible implementation, the PSFCH may be used to transmit feedback information. For example, for one PSSCH transmission, if the transmitting end carries hybrid automatic repeat request acknowledgement (hybrid automatic repeat request acknowledgment, HARQ-ACK) feedback enabling information in the control information, the receiving end may feedback corresponding Acknowledgement (ACK) or negative (negative acknowledgement, NACK) information according to the decoding result of the PSSCH. Wherein ACK or NACK information is transmitted over the PSFCH. Alternatively, ACKonly or NACKonly information may also be transmitted via PSFCH.

The resources of the feedback channel refer to resources for transmitting the feedback channel.

10. Reference signal received power (reference signal received power, RSRP)

PSSCH-RSRP is by definition the average of the useful signal (i.e., PSSCH-DMRS) power (power of the non-computed CP portion) over all REs carrying PSSCH-DMRS over the linear domain. PSCCH-RSRP is by definition the average of the useful signal (i.e., PSCCH-DMRS) power (power of the non-computed CP portion) over all REs carrying PSCCH-DMRS in the linear domain. The symbol where the PSFCH is located does not measure RSRP.

11. Busy to busy ratio (channel busy ratio, CBR)

CBR refers to: at time slot n, the proportion or portion of the measured S-RSSI on the sub-channel in the resource pool on the time slot where the defined measurement window is located exceeds the configured threshold value. Alternatively, the measurement window may have a size of [ n-a, n-b ], a and b being non-negative integers. For example, a=100, b=1.

Alternatively, the CBR may be measured for different channels, resulting in CBR for the corresponding channel. For example, measuring the physical sidelink shared channel (physical sidelink shared channel, PSSCH), then obtaining the CBR of the PSSCH; measuring a physical sidelink control channel (physical sidelink control channel, PSCCH) to obtain CBR of the PSCCH; the physical sidelink control channel (physical sidelink feedback channel, PSFCH) is measured to obtain the CBR of the PSFCH.

Alternatively, for PSSCH, assuming 20 subchannels per slot in a resource pool, there are 100×20=2000 subchannels over a measurement window of 100 slots (slots n-100, n-1) preceding slot n. If the received signal strength indication (received signal strength indication, RSSI) of 1200 sub-channels over the first 100 slots preceding slot n is measured to exceed the network device configured threshold, then CBR measured at time slot n is 1200/(100 x 20) =0.6.

Alternatively, for PSCCH, only the locations of the PSCCH and PSCCH resource pools are measured that are not adjacent in the frequency domain. When measured, the PSCCH bandwidth is fixed to 2 PRBs.

The RSSI is briefly described as follows: when RSSI measurements are made for the side links, the RSSI at this time may be referred to as the side link RSSI (S-RSSI). Alternatively, the S-RSSI is defined as the linear average of all received power over the configured sub-channels received on each symbol. For example, there are 10 symbols available for measurement in one slot, and assuming that the bandwidth occupied by the sub-channel configured on each symbol is 20 physical resource blocks (physical resource block, PRB), the total power of each symbol on the 20 PRBs on the 10 symbols is calculated respectively, and then the measurement results on the 10 symbols available for measurement are linearly averaged to obtain the S-RSSI.

For another example, there are 12 symbols available for measurement in a timeslot, and assuming that 10 sub-channels are configured on each symbol, the total power of each symbol on the 10 sub-channels on the 12 symbols available for measurement is calculated respectively, and then the measurement results on the 10 symbols are linearly averaged to obtain the S-RSSI.

12. Channel occupancy (channel occupancy ratio, CR)

CR refers to: in time slot n, the number of channels used for transmission is divided by the total configured subchannels. Alternatively, the number of channels used for transmission may be the sum of the number of sub-channels used for transmission before time slot n and/or the number of sub-channels scheduled for transmission after time slot n. Correspondingly, the number of the total configured subchannels may be in the measurement window before the time slot n or the number of the subchannels in the measurement window after the time slot n. For example, the measurement window before the time slot n may be [ n-a, n-1], the measurement window after the time slot n may be [ n, n+b ], and the total number of configured subchannels is the total number of subchannels configured on [ n-a, n+b ].

For example, for time slot n, assuming a total number of subchannels S1 for transmission over time slot [ n-a, n-1], a total number of subchannels S2 scheduled for transmission over time slot [ n, n+b ], a total number of subchannels S configured over time slot [ n-a, n+b ], CR measured at time slot n is (s1+s2)/S.

It should be noted that the total number of sub-channels scheduled for transmission on [ n+1, n+b ] is actually the sub-channels occupied by future transmissions, which may be counted based on retransmissions indicated by the indication information of the scheduling assignment (scheduling assignment, SA) detected on time slot n.

For example: for time slot n, the total number of subchannels s1=2000 for transmission over time slot n-500, n-1, the total number of subchannels s2=1000 for transmission scheduled over time slot n, n+499, and the total number of subchannels s=1000×20 configured over time slot n-500, n+499, the CR measured at time slot n is (2000+1000)/20000=0.15.

13. Priority level

The priority of data of different services, data transmitted on the same time unit or channel, which are sent by the UE may be different. The higher the priority, the more important, or more urgent, or higher the reliability requirement this data is to be transmitted. Conversely, a lower priority indicates that this data to be transmitted is less important, or less urgent, or less reliable. .

It will be appreciated that the priority levels may have some correspondence to the priority values, for example, a higher priority level may correspond to a lower priority value or a lower priority level may correspond to a lower priority value. Taking the example that the priority value corresponding to the higher priority level is lower, the range of the priority value can be an integer of 1-8 or an integer of 0-7. If the range of the priority value is 1-8, the priority value is 1, which represents the highest priority.

The terms referred to in the present application are briefly described above, and will not be repeated in the following examples. Furthermore, the foregoing descriptions of the terms are provided for the purpose of illustration only, and are not intended to limit the scope of the embodiments of the present application.

It will be appreciated that the term "and/or" is merely one association relationship describing the associated object, and means that three relationships may exist, for example, a and/or B may mean: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

It is also understood that the information indicated by the indication information is referred to as information to be indicated. In a specific implementation process, there are various ways to indicate the information to be indicated, for example, but not limited to, the information to be indicated may be directly indicated, such as the information to be indicated itself or an index of the information to be indicated. The information to be indicated can also be indicated indirectly by indicating other information, wherein the other information and the information to be indicated have an association relation. It is also possible to indicate only a part of the information to be indicated, while other parts of the information to be indicated are known or agreed in advance. For example, the indication of the specific information may also be achieved by means of a pre-agreed (e.g., protocol-specified) arrangement sequence of the respective information, thereby reducing the indication overhead to some extent.

In the description of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the various embodiments of the application, if there is no specific description or logical conflict, terms and/or descriptions between the various embodiments are consistent and may reference each other, and features of the various embodiments may be combined to form new embodiments according to their inherent logical relationships.

It will be appreciated that the various numerical numbers referred to in this application are merely descriptive convenience and are not intended to limit the scope of this application. The sequence number of each process does not mean the sequence of the execution sequence, and the execution sequence of each process should be determined according to the function and the internal logic.

The terms "first," "second," "third," "fourth," and other various terms like numerals and the like, if any, in the description and claims of this application and the above-described figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments described herein may be implemented in other sequences than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

The method for transmitting information provided in the embodiments of the present application will be described in detail below with reference to the accompanying drawings. The embodiments provided herein may be applicable to any communication scenario in which a transmitting end device and a receiving end device communicate, for example, may be applied to the communication systems shown in fig. 1 and fig. 1 described above.

Fig. 5 illustrates an exemplary flow chart of a method 500 of resource determination provided by an embodiment of the present application. The method 500 may be performed by the first terminal device or by a component of the first terminal device (e.g., a chip or circuit), and for convenience, the method 500 is described below as being performed by the first terminal device.

In the method 500, when the candidate resource set excludes the reserved resource corresponding to the first data associated with the first feedback channel, the first terminal device also excludes the reserved resource corresponding to the first feedback channel, so as to ensure the feedback performance of the first data. The method 500 is illustrated in connection with the various steps of fig. 5.

S501, the first terminal device receives the first information in the sensing window.

The first information is indicative of a first COT of the second terminal device, the first COT comprising resources occupied by the first feedback channel. The second terminal device may be a receiving end device of the first terminal device, or may be a transmitting end device of the first terminal device, or may be another device that does not have a transceiving relationship with the first terminal device, which is not limited in this application. It can be understood that the second terminal device is a receiving end device of the first terminal device, which means that the destination identifier of the first terminal device is a source identifier of the second terminal device; the second terminal device is a transmitting end device of the first terminal device, and refers to that a destination identifier of the second terminal device is a source identifier of the first terminal device.

In one example, the first information is side-uplink control information SCI. Alternatively, the first information may include one or more of the following information: the method comprises the steps of firstly, carrying out structure information of a first COT, and transmitting reservation information of data on the first COT and scheduling information of the data on the first COT. The structure information of the first COT includes one or more of time-frequency resource information occupied by the first COT, channel access priority type information, time-frequency resource information of data sent by the second terminal device on the first COT, time-frequency resource information shared by the second terminal device to other terminal devices on the first COT, reservation period information of the first COT, and the like. The reservation information for transmitting data on the first COT includes: one or more of priority information of transmission data, reservation period information of transmission data, time-frequency resource information occupied by transmission data and the like. Scheduling information for transmitting data on a first COT, comprising: one or more of the information of the identification or source identification of the first terminal device, the identification or destination identification of the second terminal device, the broadcast type, the HARQ process number, etc.

S502, the first terminal equipment excludes reserved resources corresponding to first data associated with the first feedback channel from a candidate resource set in a selection window, and excludes reserved resources corresponding to the first feedback channel from the candidate resource set.

The first terminal device, after receiving the first information through the sensing window, excludes reserved resources corresponding to the first data and reserved resources corresponding to the first feedback channel from the candidate resource set in the selection window.

Wherein the first feedback channel is associated with the first data. That is, the information transmitted in the resources occupied by the first feedback channel is feedback information of the first data, or the feedback information of the first data is transmitted in the resources of the first feedback channel.

The first data is located on a first COT and/or a second COT located before the first COT. That is, the first data may be data transmitted on the first COT, may be data transmitted on the second COT, or may be partially transmitted on the first COT and partially transmitted on the second COT, which is not limited in this application.

It is to be appreciated that the second COT may be a COT detected by the first terminal device in the sensing window (i.e., the first terminal device receives information indicating the second COT in the sensing window), or may not be a COT detected by the first terminal device in the sensing window, which is not limited in this application.

Optionally, the candidate set of resources in the selection window refers to a set of time-frequency resources in the selection window for the first terminal device to transmit data and/or control information.

The first terminal device excludes the reserved resource corresponding to the first data from the candidate resource set, which means that the first terminal device excludes the part of the reserved resource corresponding to the first data, which is overlapped with the candidate resource set, from the candidate resource set. Alternatively, excluding the reserved resource corresponding to the first data may also be understood that the first terminal device does not use the reserved resource corresponding to the first data as a candidate resource for transmitting data and/or control information, or the first terminal device does not reserve the reserved resource corresponding to the first data in the candidate resource set.

In one possible implementation, the first terminal device may exclude the reserved resources corresponding to the first feedback channel in case it is determined to exclude the reserved resources corresponding to the first data from the candidate resource set in the selection window. In other words, the first terminal device does not exclude the reserved resource corresponding to the first feedback channel from the candidate resource set in the selection window if it is determined that the reserved resource corresponding to the first data is not excluded from the candidate resource set. The present application does not limit how the first terminal device determines to exclude the reserved resources corresponding to the first data from the candidate resource set.

It is understood that the first terminal device does not exclude the reserved resources in the candidate set of resources, which means that the first terminal device uses the reserved resources as candidate resources for transmitting data or information, or that the first terminal device reserves the reserved resources in the candidate set of resources.

In another possible implementation manner, the first terminal device excludes the reserved resource corresponding to the first data from the candidate resource set in the selection window and excludes the reserved resource corresponding to the first feedback channel if the first condition is met, where the first condition includes two following:

the first terminal equipment acquires a reserved period associated with the second data, or the second data is periodic data, or the information indicating the second data comprises the reserved period;

the reserved resource corresponding to the second data has an intersection with the candidate resource set in the selection window, or the reserved resource corresponding to the second data has partial or complete overlap with the candidate resource set in the selection window.

The second data may be the first data or other data located on the same COT as the first data, which is not limited in this application.

Optionally, the first condition may further include one of: the RSRP of the second data is greater than or equal to a preset threshold value. It should be understood that the threshold values according to the embodiments of the present application may be preconfigured or predefined values, or values configured by a network device, which are not limited in this application, and will not be repeated in other similar places.

In other words, in the case where any one of the first conditions is not satisfied, the first terminal device does not exclude the reserved resource corresponding to the first data and the reserved resource corresponding to the first feedback channel from the candidate resource set in the selection window.

One possible implementation of the first terminal device excluding the reserved resources corresponding to the first feedback channel from the candidate resource set is exemplarily described below. In an exemplary embodiment, the first terminal device excludes part or all of the frequency domain resources on the first time unit from the candidate resource set, where the reserved resources corresponding to the first feedback channel are located on the first time unit, and the part or all of the frequency domain resources include a resource block set where the reserved resources of the first feedback channel are located. The partial frequency domain resource of the first time unit refers to, for example, a frequency domain resource occupied by the first COT.

That is, in the case that the first terminal device excludes the reserved resource corresponding to the first feedback channel from the candidate resource set, the first terminal device also excludes other part or all of the resources on the first time unit where the reserved resource corresponding to the first feedback channel is located from the candidate resource set. Optionally, the reserved resources corresponding to the first feedback channel include reserved resources corresponding to data in the shared resource used for feedback in the first COT. Therefore, by excluding the reserved resources corresponding to the first feedback channel, interruption of the feedback resources on the reserved resources of the first COT can be prevented.

Optionally, the first terminal device may further exclude, from the candidate resource set, a reserved resource located before the first time unit in which the first feedback channel is located on the first COT.

For convenience of explanation, the reserved resources of the first COT are divided into reserved resources #1, reserved resources #2 and reserved resources #3, wherein the reserved resources #1 are reserved resources of a first time unit where the first feedback channel is located, the reserved resources #2 are reserved resources of the first COT located before the first time unit where the first feedback channel is located, and the reserved resources #3 are reserved resources of the first COT located after the first time unit where the first feedback channel is located. If the first terminal device is to exclude the reserved resource #1 from the candidate set of resources, the first terminal device may also exclude the reserved resource #2 from the candidate set of resources, so in this case, the second terminal device may use the reserved resource #1 and the reserved resource #2 to transmit, so as to avoid transmission interruption of the second terminal device on the first COT, thereby improving transmission performance of the second terminal device.

It may be understood that, when the first terminal device is to exclude the reserved resources of the first feedback channel from the candidate resource set, since the transmission opportunity on the first time unit where the reserved resources of the first feedback channel are located needs to be carried on the entire first COT to perform internal power transmission, if the reserved resources on the first COT located before the first time unit are excluded, at least the second terminal device may be ensured to successfully transmit on the first time unit, thereby improving the transmission performance.

Optionally, the first terminal device may also exclude reserved resource #3 from the candidate set of resources. That is, the first terminal device may exclude the reserved resources of the first COT in case that the reserved resources corresponding to the first feedback channel are to be excluded.

Optionally, the first terminal device may exclude, from the candidate resource set, a reserved resource located before the first time unit in which the first feedback channel is located on the first COT, if the second condition is satisfied. Wherein the second condition herein includes one or more of: the transmission priority carried on the first feedback channel is greater than or equal to a first threshold value, or the first terminal device is receiving device corresponding to the first feedback channel.

The first terminal device is a receiving device corresponding to the first feedback channel, which means that the first terminal device is a device for transmitting data, and the first terminal device expects to receive feedback information for the data transmitted by the first terminal device on a resource of the first feedback channel, or the first feedback channel is used for transmitting the feedback information for the data transmitted by the first terminal device.

That is, in the above scheme, if the transmission priority carried on the first feedback channel is greater than or equal to the first threshold, the first terminal device excludes the reserved resource located before the first time unit on the first COT in the candidate resource set, so that the success rate of the transmission of the second terminal device on the first time unit can be further protected.

Optionally, the terminal device further obtains second information, where the second information indicates the first terminal device to determine the candidate resource based on the COT. The second information is from the second terminal device or the network device, or the second information is predefined or preconfigured information, which is not limited in this application. The first terminal device may perform S502 described above according to the second information.

To facilitate an understanding of the scheme provided by the method 500 described above, an exemplary description of the scheme described above is provided below in connection with fig. 6-8.

In the example shown in fig. 6, the first feedback channel on the first COT is associated with the first data on the first COT, where the first terminal device, in the case of determining to exclude the reserved resource corresponding to the first data, excludes part or all of the frequency domain resource on the first time unit from the candidate resource set in the selection window, where the first time unit is a time unit in which the reserved resource corresponding to the first feedback channel is located, and part or all of the resources include a resource block set in which the reserved resource of the first feedback channel is located.

Optionally, the first terminal device may further exclude, from the candidate resource set, a reserved resource located before the time unit where the first feedback channel is located on the first COT. As shown in fig. 7. It will be appreciated that in fig. 7, the reserved resources on the first COT located before the time unit where the first feedback channel is located include reserved resources corresponding to the first data, and/or resources between the reserved resources corresponding to the first data and the time unit where the reserved resources of the first feedback channel are located (i.e. diamond-shaped filled portions in the figure). It is understood that excluding "reserved resources on the first COT that are located before the time unit in which the first feedback channel is located" includes excluding part or all of the resources filled with diamonds in the figure.

In the example shown in fig. 8, the feedback channel on the first COT is associated with the first data on the second COT, where the second COT is located before the first COT, and when determining to exclude the reserved resource corresponding to the first data, the first terminal device excludes the resource on the first time unit from the candidate resource set in the selection window, where the first time unit is the time unit where the reserved resource corresponding to the first feedback channel is located.

Based on the above scheme, after the first terminal device detects the first COT of the second terminal device, if the candidate resource set excludes the reserved resource of the first data associated with the first feedback channel, the reserved resource of the first feedback channel is also excluded, so that the transmission performance of the first data, for example, the receiving performance of the first data and the feedback performance of decoding can be improved.

It will be appreciated that in the above method 500, the resources of the first feedback channel are located on the first COT of the second terminal device, that is, the above method 500 describes a scheme in which the first terminal device determines whether to exclude reserved resources of the first feedback channel on the first COT from the candidate set of resources. But the present application is not limited thereto. That is, the present application does not limit that the resource of the first feedback channel is located on a certain COT detected by the first terminal device. For example, the resources of the first feedback channel may also be configured by the system in a system-level manner. The resources of the first feedback channel may be configured on a resource pool, or the network device may be configured to the first terminal device through a system message, which is not limited in this application.

As one possible example, the resources of the first feedback channel are configured or pre-configured with signaling on the resource pool, as well as the reserved resources of the first feedback channel. For convenience, the resources of the first feedback channel and the reserved resources of the first feedback channel are collectively referred to herein as first feedback resources.

In case the feedback resource has an intersection with the candidate resource set of the first terminal device, the first terminal device may exclude the feedback resource in the candidate resource set if any of the following conditions is met:

(1) The first feedback resource is a feedback resource used by the first terminal equipment;

(2) The first feedback resource is a common feedback resource configured by a resource pool.

It may be understood that the feedback resource used by the first feedback resource for the first terminal device refers to a feedback resource used by the first feedback resource for the first terminal device to send and/or receive. The first feedback resource is a feedback resource used for sending by the first terminal equipment, and refers to feedback information of the first feedback resource for transmitting data sent by the first terminal equipment; the first feedback resource is a feedback resource used by the first terminal equipment for receiving, and refers to feedback information of the first feedback resource for transmitting data received by the first terminal equipment.

It is also understood that, in the case where the above condition (1) is satisfied, the first terminal device may exclude only the feedback resource to be used by the first terminal device from the first feedback resources. In case condition (2) is met, the first terminal device needs to exclude all resources in the first feedback resources, optionally, the first terminal device further excludes all common feedback resources configured on the resource pool.

Optionally, the first terminal device excludes the first feedback resource may refer to a time unit in which the first terminal device excludes the first feedback resource.

Based on the above scheme, the first terminal device may exclude the feedback resource in the resource selection window from the candidate resource set according to the information of the configured feedback resource and the usage situation of the feedback resource by the first terminal device. Therefore, the scheme is beneficial to improving the robustness of the feedback resource from the perspective of the first terminal equipment or the system by enabling the first terminal equipment not to take the feedback resource as a candidate resource for transmitting data per se under certain conditions, thereby improving the feedback performance.

Fig. 9 illustrates an exemplary flow chart of a method 900 of resource determination provided by an embodiment of the present application. The method 900 may be performed by the first terminal device or by a component of the first terminal device (e.g., a chip or circuit), and for convenience, the method 900 is described below as being performed by the first terminal device.

In the method 900, the number of resources excluded by the first terminal device in the candidate set of resources is greater than the number of reserved resources of the first COT of the second terminal device. The method 900 is illustrated in connection with the various steps of fig. 9.

S901, the first terminal device receives the first information in the sensing window.

The first information indicates, for example, a first COT of the second terminal device, a reserved resource of the first COT being a first resource, and a number of the first resources being N1.

It may be appreciated that the reserved resource of the first COT may be any one of the following:

resources reserved on the first COT for the second terminal device to transmit data; or,

resources reserved for the second terminal device to transmit data on the first COT, and resources reserved for the other devices to transmit data on the first COT; or,

the resources reserved for the second terminal device to transmit data on the first COT, the resources reserved for the other devices to transmit data on the first COT, and the resources reserved for the first COT to transmit feedback information.

S902, the first terminal device excludes the second resource from the candidate resource set in the selection window.

Illustratively, the second resource is N2 in number, the second resource comprises the first resource, and N2 is greater than N1. That is, the number of resources excluded by the first terminal device in the candidate resource set is greater than the number of reserved resources of the first COT.

It will be appreciated that the first terminal device may be to exclude the second resource from the candidate set of resources in the event that it is determined that the first resource is to be excluded from the candidate set of resources. The manner in which the first terminal device determines to exclude the first resource from the candidate resource set is not limited in this application.

Optionally, the first terminal device excludes the second resource from the candidate resource set if it is determined that the first COT or the data transmitted on the resource pool where the first COT is located enables PSFCH feedback. It can be appreciated that if the first terminal device turns off the PSFCH feedback on the resource pool where the first COT is determined to be located, then N2 is equal to N1. For example, the feedback period corresponding to the first COT may be an integer of 0,1,2,3,4, etc. When the feedback period is 0, it indicates that the first COT does not enable feedback, and the value of N2 is equal to the value of N1.

Optionally, before S902, the first terminal device determines N2 according to one or more of the following information: configuration information from the network device or the second terminal device, a feedback period corresponding to the first COT, a value of N1, and a number of shared slots on the first COT. An exemplary description is given below.

For example, the network device or the second terminal device sends configuration information to the first terminal device, the configuration information being used to indicate the value of N2, i.e. the configuration information indicates the number of resources that the first terminal device excludes from the candidate set of resources.

For another example, the value of N2 corresponds to the period corresponding to the first COT, that is, the larger the feedback period corresponding to the first COT is, the larger the value of N2 is, and conversely, the smaller the value of N2 is.

For another example, the larger the value of N1, the larger the value of N2, and the larger the difference between N2 and N1.

For another example, the value of N2 corresponds to the number of shared slots in the first COT, and the larger the shared slot is on the first COT, the larger the value of N2 is, and conversely the smaller N2 is.

It may be understood that the embodiment of the present application does not limit whether the first terminal device and the second terminal device have a transceiving relationship, that is, the first terminal device may be a transmitting end device and/or a receiving end device of the second terminal device, or may be neither a transmitting end device of the second terminal device nor a receiving end device of the second terminal device, which is not limited in the present application.

To facilitate an understanding of the scheme provided by method 900, an exemplary illustration of such a scheme is provided below in conjunction with FIG. 10.

As can be seen from the example shown in fig. 10, the first resource is a reserved resource of the first COT, and the second resource is larger than the first resource. Wherein the resource a and the resource b are resources of which the second resource is more than the first resource, and at least one of the resource a and the resource b is more than 0.

Based on the above scheme, the number of the resources excluded from the candidate resource set by the first terminal device is greater than the number of reserved resources of the first COT of the second terminal device, so that more resources can be reserved for the second terminal device for transmission, the transmission performance of the second terminal device is improved, and the probability of failure in transmitting some data or information of the second terminal device due to resource conflict is reduced. Further optionally, in the case that the first COT or the data transmitted on the resource pool where the first COT is located enables PSFCH feedback, the first terminal device excludes N2 second resources in the candidate resource set, more resources than the first resources may be reserved for the second terminal device, and the part of the more resources may be used for the second terminal device to send feedback information of the first COT or other COTs before the first COT, and may also set transmission resources for part of MAC CEs or potential shared data, so that the transmission performance of the second terminal device may be improved.

Fig. 11 illustrates an exemplary flow chart of a method 1100 of resource determination provided by an embodiment of the present application. In the method 1100, the number of reserved resources of the second terminal device is greater than the number of resources of the second terminal device for transmitting data, so that the second terminal device has enough resources to transmit subsequently, thereby improving the transmission performance of the second terminal device. The method 11 is illustrated in the following in connection with the various steps of fig. 11.

S1101, the second terminal device determines a third resource.

The third resource is a resource reserved for the second terminal device to transmit the second data, the third resource includes a fourth resource, the fourth resource is a resource for the second terminal device to transmit the second data, the number of the third resource is N2, the number of the fourth resource is N1, and the N2 is greater than the N1.

That is, the second terminal device reserves a larger number of resources than the second terminal device transmits data.

As a possible implementation manner, the second terminal device determines the number of third resources (i.e. N2) according to one or more of the following: the maximum COT length mCOT corresponding to the channel access priority type CAPC of the second terminal equipment, the number of time units occupied by PSFCH resources configured by the second terminal equipment, and the number of resources of COT to be shared. The following is described in connection with examples.

For example, N2 cannot be greater than the maximum COT length mCOT corresponding to the CAPC of the second terminal device;

for another example, N2 is less than or equal to n1+ns, where Ns is the number of time units occupied by the PSFCH resources configured on the first COT;

for another example, N2 is less than or equal to n1+ns, where Ns is the number of time units occupied by the second terminal device sharing resources to other terminals on the first COT.

S1102, the second terminal device sends third information to the first terminal device, where the third information is used to indicate the third resource. Correspondingly, the first terminal device receives the third information from the second terminal device.

Optionally, before S1102, the second terminal device receives fourth information, which instructs the second terminal device to send the third information to the first terminal device. In this case, the second terminal device transmits the third information to the first terminal device according to the fourth information.

The manner in which the second information indicates the third resource is not limited in this application. In one possible implementation, the third information directly indicates the third resource. As an example, the third information includes one or more fields for indicating the third resource, or the third information includes one or more fields for indicating an index of the third resource. In another possible implementation, the third information indicates the third resource indirectly, for example, the third information indicates the fourth resource and a value of N3, where N3 is a difference between N2 and N1.

Optionally, S1103, the second terminal device sends fifth information to the first terminal device. Correspondingly, the first terminal device receives the fifth information from the second terminal device.

Illustratively, the fifth information indicates a number of resources excluded by the candidate set of resources in the selection window by the first terminal device, the number of resources being N2 or N1. Illustratively, the fifth information may be a 1bit indication bit, which when taken as "1" indicates that the number of resources is N2; when the value is "0", the number of the resources is identified as "N1".

Optionally, before S1103, the second terminal device determines the number of resources excluded by the first terminal device from the candidate set of resources. As a possible implementation manner, the second terminal device may determine the number of resources excluded by the first terminal device in the candidate resource set by:

for example, the second terminal device determines whether the fixed bit rate CBR of the first COT is greater than or equal to a fourth threshold value, and if the CBR of the first COT is greater than or equal to the fourth threshold value, the second terminal device determines that the value of N3 is N2, otherwise the second terminal device determines that the value of N3 is N1;

for another example, the second terminal device determines whether the first COT enables HARQ, and if the first COT enables HARQ, the second terminal device determines that the value of N3 is N2, otherwise the second terminal device determines that the value of N3 is N1;

For another example, the second terminal device determines that the value of N3 is N2 when the number of PSFCH resources or the PSFCH resource period configured on the first COT is a first value, and determines that the value of N3 is N1 when the number of PSFCH resources or the PSFCH resource period configured on the first COT is a second value, where the first value and the second value may be predefined or preconfigured values, or values configured by the network device, and the application is not limited.

For another example, the second terminal device determines that the value of N3 is N2 in case the reserved resources of the first COT include shared resources or feedback resources, otherwise the second terminal device determines that the value of N3 is N1.

Fig. 12 illustrates an exemplary flowchart of a method 1200 of resource determination provided by an embodiment of the present application. The method 1200 may be performed by the first terminal device or by a component of the first terminal device (e.g., a chip or circuit), and for convenience, the method 1200 is described below as being performed by the first terminal device.

In the method 1200, the number of reserved resources (denoted as N2) of the first COT is greater than the number of resources (denoted as N1) of the first COT for transmitting data, and the first terminal device may exclude N2 resources or N1 resources from the candidate resource set according to the actual requirement. The method 1200 is described in exemplary fashion in connection with the various steps of FIG. 12.

S1201, the first terminal device receives the first information in the sensing window.

Illustratively, the first information indicates a first COT of the second terminal device, the first COT including a fifth resource for transmitting data, the fifth resource being N1 in number.

The reserved resource of the first COT is a sixth resource, the number of the sixth resource is N2, and N2 is greater than N1.

S1202, the first terminal device excludes the seventh resource from the candidate resource set in the selection window.

Illustratively, the first terminal device excludes a seventh resource comprising the fifth resource or the sixth resource.

A specific implementation of the first terminal device determining the number N3 of fifth resources is exemplarily described below.

In a possible implementation manner, the first terminal device receives sixth information from the second terminal device or the network device, where the sixth information is used to indicate the number of the fifth resources, and the first terminal device determines N3 according to the sixth information;

In another possible implementation manner, the first terminal device determines whether the CBR of the first COT is greater than or equal to a fourth threshold value, where the first terminal device determines that the value of N3 is N2 if the CBR of the first COT is greater than or equal to the fourth threshold value, and otherwise the first terminal device determines that the value of N3 is N1;

in yet another possible implementation manner, the first terminal device determines whether the first COT enables HARQ, where the first terminal device determines that the value of N3 is N2 if the first COT enables HARQ, and otherwise the first terminal device determines that the value of N3 is N1;

in yet another possible implementation manner, in a case where the number of PSFCH resources or the PSFCH resource period configured on the first COT is a first value (e.g., the period is 1 or 2), the first terminal device determines that the value of N3 is N2, and in a case where the number of PSFCH resources or the PSFCH resource period configured on the first COT is a second value (e.g., the period is 4 or 8), the first terminal device determines that the value of N3 is N1. It is to be understood that the first value and the second value herein may be predefined or preconfigured values, or values configured by a network device, which is not limited in this application.

In yet another possible implementation, the first terminal device determines that the value of N3 is N2 in case the reserved resources of the first COT comprise shared resources or feedback resources, otherwise the first terminal device determines that the value of N3 is N1.

In yet another possible implementation, the first terminal device determines that the value of N3 is N2 if the first terminal device detects that the resources reserved by the second terminal device include shared resources or feedback resources, and otherwise the first terminal device determines that the value of N3 is N1.

Fig. 13 illustrates an exemplary flowchart of a method 1300 of resource determination provided by an embodiment of the present application. The method 1300 may be performed by the first terminal device or by a component of the first terminal device (e.g., a chip or circuit), and for convenience, the method 1300 is described below as being performed by the first terminal device.

In method 1300, after detecting the first COT, the first terminal device determines whether to perform frequency division multiplexing on a resource reserved for the first data sent on the first COT. The method 1300 is described in exemplary fashion in connection with the various steps of FIG. 13.

S1301, the first terminal device receives first information in the sensing window, where the first information indicates a first COT of the second terminal device.

S1302, the first terminal device determines whether to exclude the eighth resource from the candidate resource set in the selection window.

Illustratively, the eighth resource is located in the same time unit as the ninth resource, and the eighth resource is different from the ninth resource in frequency domain, the ninth resource being a reserved resource of the first data transmitted on the first COT. That is, the eighth resource and the ninth resource are resources having the same time domain but different frequency domains, and thus the eighth resource can also be said to be a resource frequency-divided from the ninth resource. Thus, S1302 can also be described as: the first terminal device determines whether to perform frequency division multiplexing on the ninth resource.

The eighth resource may belong to the same RB set as the ninth resource, or may be a resource other than the ninth resource among the resources on all rbsets in the time unit where the ninth resource is located.

It may be understood that the first data is data sent by the second terminal device, or data sent by other terminal devices on a shared resource on the first COT, which is not limited in this application.

Optionally, before S1302, the first terminal device determines the ninth resource. As an example, the first terminal device determines the ninth resource if a third condition is met, the third condition comprising one or more of:

the first information includes a reservation period (or, a reservation period associated with the first data is acquired by the first terminal device, or, the first data is periodic data, or, transmission of the second terminal device on the first COT is periodic transmission, or, periodic reserved resources exist in the first COT);

the RSRP of the first COT is larger than or equal to a preset threshold value;

the first terminal device receives second information indicating that the first terminal device determines candidate resources based on the COT.

Several possible implementations of the first terminal device in determining whether to exclude the eighth resource from the candidate set of resources are exemplarily described below in connection with the examples.

As a possible implementation manner, in the case that the fifth condition is satisfied, the first terminal device determines to exclude the eighth resource from the candidate resource set; in the case that this fifth condition is not satisfied, the first terminal device determines not to exclude the eighth resource from the candidate resource set.

The fifth condition includes: the first terminal device is a receiving end device of the second terminal device, and/or the first terminal device acquires seventh information, where the seventh information indicates that the first terminal device does not perform frequency division multiplexing on the ninth resource, or the seventh information indicates that the first terminal device excludes the eighth resource in the candidate resource set, where the seventh information is from the second terminal device or the network device, or the seventh information is predefined information or preconfigured information.

Optionally, the fifth condition may further include: the ninth resource has an intersection with the candidate resource set and/or the RSRP corresponding to the first COT is greater than or equal to a fifth threshold value.

Based on the above scheme, if the first terminal is the receiving end device of the second terminal device, the first terminal device excludes the eighth resource in the candidate resource set, and can meet the limitation of half duplex.

As another possible implementation manner, in the case that the sixth condition is satisfied, the first terminal device determines that the eighth resource is not excluded from the candidate resource set; in case the sixth condition is not met, the first terminal device determines to exclude the eighth resource from the candidate set of resources.

The sixth condition includes: the first terminal device is not a receiving end device of the second terminal device, and/or the first terminal device obtains eighth information, the eighth information indicates that the first terminal device does not perform frequency division multiplexing on the ninth resource, or the eighth information indicates that the eighth resource is reserved in the candidate resource set, wherein the eighth information is from the second terminal device or the network device, or the eighth information is predefined information or preconfigured information. It is understood that the eighth information and the seventh information may be different values of one information or may be different information, which is not limited in this application.

In the following, a specific implementation manner of the network device sending the eighth information to the first terminal device will be described by taking the network device as an example.

In one possible implementation manner, the network device may send eighth information to the first terminal device when the priority of the first data sent on the first COT is higher than the second threshold value, or when the channel access priority of the first data sent on the first COT is higher than the third threshold value.

Thus, optionally, the sixth condition may further include: the priority of the first data sent on the first COT is higher than a first threshold value; or, the channel access priority of the first data sent on the first COT is higher than the second threshold value.

In another possible implementation manner, the network device may send the eighth information to the first terminal device if the priority of the first data sent on the first COT is lower than the second threshold value, or if the channel access priority of the first data sent on the first COT is lower than the third threshold value.

Thus, optionally, the sixth condition may further include: the priority of the data sent on the first COT is lower than a first threshold value; or, the channel access priority of the data sent on the first COT is lower than the second threshold.

Based on the scheme, the frequency division multiplexing between the first terminal equipment and the second terminal equipment can be realized, so that the utilization efficiency of the whole system resource is improved, and the performance of the whole system is enhanced.

Optionally, in the case that the first terminal device determines that the eighth resource is not excluded from the candidate resource set, the first terminal device uses one of the cyclic prefix extension CPEs of the second terminal device in the time slot where the first data is located as the CPE of the eighth resource. Based on the scheme, the first terminal equipment uses CPE of the transmission of the second terminal equipment on the time slot where the first data is located to set CPE of the candidate resource for frequency division multiplexing, and the CPE associated with or determined by the message to be transmitted of the first terminal equipment is not used any more, so that the influence on the transmission of the second terminal equipment can be reduced.

As a possible example, the first terminal device uses, as the CPE of the eighth resource, a first CPE of the plurality of CPEs of the second terminal device in the time slot where the first data is located, where the first CPE is greater than or equal to a preset threshold value. Based on the scheme, the transmission performance of the first terminal equipment can be improved.

In one possible implementation, the first CPE is the maximum value of the plurality of CPEs of the second terminal device over the time slot in which the first data is located.

Optionally, in case the first terminal device determines that the eighth resource is not excluded from the candidate resource set, reporting the eighth resource to a higher layer of the first terminal device, and the CPE of the eighth resource (e.g. the first CPE in the above example) by the first terminal device. As a possible example, the physical layer of the first terminal device (or other layers below the higher layer) reports the eighth resource to the higher layer of the first terminal device, and the first terminal device is at the CPE of the eighth resource, where the higher layer of the first terminal device is, for example, the MAC layer of the first terminal device.

It can be understood that the specific implementation manner of "reporting the eighth resource to the higher layer of the first terminal device" may be: reporting the candidate resource set determined by the first terminal equipment to a higher layer of the first terminal equipment, wherein the candidate resource set comprises the eighth resource.

Optionally, the synchronization sources of the first terminal device and the second terminal device are the same; and/or the type of the synchronization source of the first terminal device and the second terminal device is the same; and/or the first terminal device and the second terminal device are synchronized to the same type of synchronization source for the same forwarding times.

Illustratively, the number of forwarding times of the synchronization source includes one or more of:

the first synchronization source is: terminal equipment class synchronization sources that synchronize directly to the satellite;

the second synchronization source is: indirectly synchronizing to a terminal equipment type synchronization source of the satellite in a forwarding way;

the third synchronization source is: a terminal device class synchronization source that is directly synchronized to the network device;

the fourth synchronization source is: indirectly synchronizing to a terminal equipment class synchronization source of the network equipment in a forwarding once mode;

the fifth synchronization source is: synchronizing to a terminal equipment type synchronization source of the satellite in a mode of forwarding twice;

the sixth synchronization source is: synchronizing to a terminal equipment class synchronization source of the network equipment in a forwarding twice mode;

the seventh synchronization source is: and synchronizing to a terminal equipment class synchronization source of the terminal equipment.

The above scheme describes a scheme that the first terminal device determines whether to exclude the eighth resource from the candidate resource set according to various situations after detecting the first COT of the second terminal device. Optionally, in the case that the first COT includes a shared slot, the first terminal device may further determine whether to exclude reserved resources of the shared slot on the first COT, which is described below with reference to an example.

After the first terminal device receives the first information through the sensing window, the first terminal device candidate resource set excludes reserved resources of the shared slot on the first COT if the following seventh condition is satisfied, where the seventh condition includes the following two:

the sending device of the shared time slot on the first COT is a first terminal device, or the receiving device of the shared time slot on the first COT is a first terminal device, and the current TB is not the TB to be sent on the shared time slot;

reserved resources of the shared slot on the first COT are intersected with the candidate set of resources.

It can be understood that the sending device of the shared time slot on the first COT is the first terminal device, which refers to that the first terminal device sends data in the shared time slot on the first COT; the receiving device of the shared time slot on the first COT is the first terminal device, which means that the first terminal device receives data in the shared time slot on the first COT.

Based on the above scheme, under the condition that the shared time slot on the first COT has a transceiving relation with the first terminal equipment, the first terminal equipment excludes the candidate resource of the shared time slot on the first COT from the candidate resource set of the current TB, so that the conflict of resource selection among different TBs of the resources is avoided, or half-duplex conflict among the receptions is avoided.

Fig. 15 illustrates an exemplary flowchart of a method 1500 of resource determination provided by an embodiment of the present application. The method 1500 may be performed by the first terminal device or by a component of the first terminal device (e.g., a chip or circuit), and for convenience, the method 1500 is described below as being performed by the first terminal device. It is to be understood that the method 1500 may be practiced alone or in combination with other embodiments previously described, and is not limited in this application.

In method 1500, the first terminal device preferentially excludes the reserved resources of the first M consecutive time units on the first COT from the candidate set of resources. Method 1600 is described below in exemplary fashion in connection with the various steps of fig. 15.

S1501, the first terminal device receives first information in a sensing window, the first information indicating a first COT of the second terminal device.

S1502, under the condition that the first terminal equipment determines that the eighth condition is met, the first terminal equipment excludes reserved resources of first to Mth continuous time units on a first COT in a candidate resource set, wherein M is a positive integer greater than or equal to 1;

the eighth condition includes: the first to mth consecutive resources on the first COT are used for periodic transmissions and/or the reference signal received power RSRP on the first to mth consecutive time units is less than or equal to a sixth threshold.

Optionally, the eighth condition further includes: the priority of the first data transmitted on the first to mth continuous time units on the first COT is greater than or equal to a seventh threshold.

As a possible implementation manner, the first terminal device may, in determining to exclude from the candidate resource set the reserved resources of M time units on the first COT, and in case the eighth condition is met, exclude from the candidate resource set the reserved resources of the first to M-th consecutive time units on the first COT. The implementation of the first terminal device determining to exclude the reserved resources of the M time units on the first COT from the candidate resource set is not limited in the present application.

To facilitate an understanding of the scheme provided by method 1500, an exemplary description of method 1500 is provided below in connection with FIG. 16: assuming that the first terminal device determines to exclude reserved resources of 3 time units on the first COT from the candidate set of resources, then in case the eighth condition is met, the first 3 consecutive time units on the first COT of the first terminal device are reserved resources (as shown in fig. 16).

Based on the above scheme, the first terminal device preferentially excludes the reserved resources of the first continuous time unit to the Mth continuous time unit on the first COT in the candidate resource set, and can prevent the transmission of the second terminal device on the first COT from being interrupted in the middle, thereby improving the transmission performance of the second terminal device.

Fig. 17 illustrates an exemplary flow chart of a method 1700 of resource determination provided by an embodiment of the present application. The method 1700 may be performed by the first terminal device or by a component of the first terminal device (e.g., a chip or circuit), as exemplified below with respect to the method 1700 being performed by the first terminal device for convenience.

In method 1700, the first terminal device also excludes reserved resources on the first COT that are located between the first time units in the case where it is determined that the set of candidate sources exclude reserved resources of the first time units on the first COT. Method 1700 is described in exemplary fashion below in connection with the various steps of FIG. 17.

S1701, the first terminal device receives first information in the sensing window, the first information indicating a first COT of the second terminal device.

S1702, in case the first terminal device determines to exclude the reserved resources of the first time unit on the first COT from the candidate resource set in the selection window, the first terminal device excludes the reserved resources of the first COT located before the first time unit from the candidate resource set.

Optionally, in case the ninth condition is met, the first terminal device excludes reserved resources located before the first time unit on the first COT from the candidate set of resources. The ninth condition includes one or more of:

the transmission priority carried on the first time unit is greater than or equal to a seventh threshold value;

the first terminal equipment is receiving equipment of information transmitted on a first time unit;

the first time unit is not the last time unit on the first COT.

Optionally, the first terminal device may exclude, from the candidate resource set, a reserved resource located before the first time unit on the first COT, which is not limited in this application.

To facilitate an understanding of the scheme provided by method 1700, exemplary description of method 1700 is provided below in connection with FIG. 18: assuming that the first terminal device determines to exclude the reserved resources of the 3 rd time unit on the first COT from the candidate set of resources, the first terminal device excludes the reserved resources of the first three time units on the first COT from the candidate set of resources (as shown in fig. 18).

Fig. 19 illustrates an exemplary flow chart of a method 1900 of resource determination provided by an embodiment of the present application. The method 1900 may be performed by the first terminal device or by a component (e.g., a chip or circuit) of the first terminal device, and for convenience, the method 1900 is described below as being performed by the first terminal device.

In method 1900, the first terminal device reserves reserved resources for all time units on the first COT, including the first time unit, if it is determined that reserved resources for the first time unit are reserved for the candidate set of resources. Method 1900 is described in exemplary fashion in connection with the various steps of FIG. 19.

S1901, the first terminal device receives first information in the sensing window, where the first information indicates a first COT of the second terminal device.

S1902, in a case where the first terminal device determines that the reserved resources of the first time unit on the first COT are not excluded from the candidate resource set within the selection window, the first terminal device does not exclude the reserved resources of all time units on the first COT from the candidate resource set.

Illustratively, the total time units on the first COT include one or more of the following:

A time unit on the first COT for the second terminal device to send data;

sharing a time unit for sending data to other terminal equipment by the second terminal equipment on the first COT;

the time unit is used for the second terminal equipment to transmit feedback information on the first COT;

and a time unit on the first COT for the second terminal equipment to send the synchronous signal.

Optionally, in case the tenth condition is met, the first terminal device does not exclude reserved resources of all time units on the first COT at the candidate set of resources. The tenth condition includes one or more of the following: the priority of the first time unit in the COT is smaller than or equal to an eighth threshold value; or, the priority of the transmission carried in the first time unit is greater than or equal to a ninth threshold value; or, the first time unit is the kth time in the first COT, and k is less than or equal to the tenth threshold value.

To facilitate an understanding of the scheme provided by method 1900, method 1900 is described in exemplary fashion below in conjunction with FIG. 20: assuming that the first terminal device determines that the reserved resources for the 1 st time unit on the first COT are not excluded from the candidate set of resources, the first terminal device does not exclude the reserved resources for all time units on the first COT from the candidate set of resources (as shown in fig. 20).

It will be appreciated that in the embodiments of the present application, the interaction between the first terminal device and the second terminal device is mainly exemplified, and the present application is not limited thereto.

It will also be appreciated that some optional features of the various embodiments of the application may, in some circumstances, be independent of other features, or may, in some circumstances, be combined with other features, without limitation.

It is also to be understood that the aspects of the embodiments of the present application may be used in any reasonable combination, and that the explanation or illustration of the terms presented in the embodiments may be referred to or explained in the various embodiments without limitation.

It is further understood that in the foregoing embodiments of the methods and operations implemented by the communication device, the methods and operations may also be implemented by component parts (e.g., chips or circuits) of the communication device.

Corresponding to the methods given by the above method embodiments, the embodiments of the present application also provide corresponding apparatuses, where the apparatuses include corresponding modules for performing the above method embodiments. The module may be software, hardware, or a combination of software and hardware. It will be appreciated that the technical features described in the method embodiments described above are equally applicable to the device embodiments described below.

Fig. 21 is a schematic block diagram of a communication device 10 provided in an embodiment of the present application. The device 10 comprises a transceiver unit 11. The transceiver unit 11 may be used to implement corresponding communication functions. The transceiver unit 11 may also be referred to as a communication interface or a communication unit.

The device 10 further comprises a processing unit 12. The processing unit 12 may be used for data processing.

Optionally, the apparatus 10 further includes a storage unit 13, where the storage unit 13 may be configured to store instructions and/or data, and the processing unit 12 may read the instructions and/or data in the storage unit, so that the apparatus implements the actions of the terminal device in the foregoing method embodiments.

In one design, the apparatus 10 may be the first terminal device in the foregoing embodiment, or may be a component (e.g., a chip) of the first terminal device. The apparatus 10 may implement steps or processes performed by the first terminal device in the above method embodiment, where the transceiver unit 11 may be configured to perform operations related to the transceiver of the first terminal device in the above method embodiment, and the processing unit 12 may be configured to perform operations related to the processing of the first terminal device in the above method embodiment.

A possible implementation manner, the transceiver unit 11 is configured to receive first information, where the first information indicates a first channel occupation time COT of the second terminal device, and the first COT includes resources occupied by the first feedback channel; a processing unit 12 for excluding the reserved resources of the first data associated with the first feedback channel from the candidate set of resources in the selection window and for excluding the reserved resources of the first feedback channel from the candidate set of resources.

Another possible implementation manner, the transceiver unit 11 is configured to receive first information in a sensing window, where the first information indicates a first channel occupation time COT of the second terminal device, a reserved resource of the first COT is a first resource, and the number of the first resources is N1; the processing unit 12 is configured to exclude a second resource from the candidate resource set in the selection window, where the number of the second resources is N2, the second resource includes the first resource, and N2 is greater than N1.

In another possible implementation manner, the transceiver unit 11 is configured to receive first information in a sensing window, where the first information indicates a first COT of the second terminal device, the first COT includes a fifth resource, the fifth resource is used for sending data, the number of the fifth resources is N1, the reserved resources of the first COT are sixth resources, and the number of the sixth resources is N2, where N2 is greater than N1; a processing unit 12 for excluding a seventh resource from the set of candidate resources in the selection window, the seventh resource comprising the fifth resource or the sixth resource.

In yet another possible implementation manner, the transceiver unit 11 is configured to receive first information in a sensing window, where the first information indicates a first channel occupation time COT of the second terminal device; a processing unit 12, configured to determine whether to exclude an eighth resource from the candidate resource set in the selection window, where the eighth resource and the ninth resource are located in a same time unit, and the eighth resource is different from the ninth resource in frequency domain, and the ninth resource is a resource reserved for the first data sent on the first COT.

In yet another possible implementation manner, the transceiver unit 11 is configured to receive first information in the sensing window, where the first information indicates information of a first channel occupation time COT of the second terminal device; a processing unit 12, configured to exclude, in the case where it is determined that the eighth condition is satisfied, reserved resources of the first to mth continuous time units on the first COT from the candidate resource set, where M is a positive integer greater than or equal to 1, and a selection window is located after the sensing window; the eighth condition includes: the first to mth consecutive resources on the first COT are used for periodic transmissions and/or the reference signal received power RSRP on the first to mth consecutive time units is less than or equal to a sixth threshold.

In yet another possible implementation manner, the transceiver unit 11 is configured to receive first information in a sensing window, where the first information is information indicating a first channel occupation time COT of the second terminal device; the processing unit 12 is configured to exclude, from the candidate set of resources, reserved resources on the first COT that precede the first time unit, in case it is determined to exclude reserved resources on the first time unit from the candidate set of resources in the selection window.

In yet another possible implementation manner, the transceiver unit 11 is configured to receive first information in a sensing window, where the first information is information indicating a first channel occupation time COT of the second terminal device; a processing unit 12 is configured to, in case it is determined that the reserved resources of the first time unit on the first COT are not excluded from the candidate set of resources within the selection window, not exclude from the candidate set of resources reserved resources of all time units on the first COT, the all time units comprising the first time unit.

The apparatus 10 may implement steps or processes performed by a first terminal device in an embodiment of a method according to an embodiment of the present application, and the apparatus 10 may include units for performing the method performed by the first terminal device in the embodiment shown in fig. 5, fig. 9, fig. 11, fig. 12, fig. 13, fig. 15, fig. 17, fig. 19.

In another design, the apparatus 10 may be the second terminal device in the foregoing embodiment, or may be a component (such as a chip) of the second terminal device. The apparatus 10 may implement steps or processes performed by the second terminal device in the above method embodiment, where the transceiver unit 11 may be configured to perform operations related to the transceiver of the second terminal device in the above method embodiment, and the processing unit 12 may be configured to perform operations related to the processing of the second terminal device in the above method embodiment.

A possible implementation manner, the processing unit 12 is configured to determine the third resource according to one or more of the following information: the channel access priority type CAPC of the second terminal equipment corresponds to a maximum COT length mCOT, the number of time units occupied by PSFCH resources configured by the second terminal equipment, and the number of resources to be shared COT, wherein a third resource is reserved for the second terminal equipment by sending second data, the number of the third resource is N2, the number of the fourth resource is N1, and the N2 is larger than the N1; the transceiver unit 11 is configured to send third information to the first terminal device, where the third information indicates a third resource.

The apparatus 10 may implement steps or processes performed by a second terminal device in an embodiment of a method according to an embodiment of the present application, and the apparatus 10 may include units for performing the method performed by the second terminal device in the embodiment shown in fig. 5, fig. 9, fig. 11, fig. 12, fig. 13, fig. 15, fig. 17, fig. 19.

A more detailed description of the apparatus 10 is directly obtained with reference to the related description in the above method embodiments, and will not be repeated here.

It should be understood that the specific process of each unit performing the corresponding steps has been described in detail in the above method embodiments, and is not described herein for brevity.

It should also be understood that the apparatus 10 herein is embodied in the form of functional units. The term "unit" herein may refer to an application specific integrated circuit (application specific integrated circuit, ASIC), an electronic circuit, a processor (e.g., a shared, dedicated, or group processor, etc.) and memory that execute one or more software or firmware programs, a combinational logic circuit, and/or other suitable components that support the described functionality. In an alternative example, it will be understood by those skilled in the art that the apparatus 10 may be specifically configured as a terminal device (e.g., a first terminal device and a second terminal device) in the foregoing embodiments, and may be configured to perform each flow and/or step corresponding to the terminal device in each foregoing method embodiment, which is not described herein for avoiding repetition.

The apparatus 10 of each of the above embodiments has a function of implementing the corresponding steps performed by the terminal device (e.g., the first terminal device, and also e.g., the second terminal device) in the above method. The functions may be implemented by hardware, or may be implemented by hardware executing corresponding software. The hardware or software comprises one or more modules corresponding to the functions; for example, the transceiver unit may be replaced by a transceiver (e.g., a transmitting unit in the transceiver unit may be replaced by a transmitter, a receiving unit in the transceiver unit may be replaced by a receiver), and other units, such as a processing unit, etc., may be replaced by a processor, to perform the transceiver operations and related processing operations in the various method embodiments, respectively.

The transceiver unit 11 may be a transceiver circuit (for example, may include a receiving circuit and a transmitting circuit), and the processing unit may be a processing circuit.

It should be noted that the apparatus in fig. 21 may be the device in the foregoing embodiment, or may be a chip or a chip system, for example: system on chip (SoC). The receiving and transmitting unit can be an input and output circuit and a communication interface; the processing unit is an integrated processor or microprocessor or integrated circuit on the chip. And are not limited herein.

Fig. 22 is a schematic block diagram of a communication device 20 provided in an embodiment of the present application. The apparatus 20 comprises a processor 21, the processor 21 being coupled to a memory 22. Optionally, a memory 22 is further included for storing computer programs or instructions and/or data, and the processor 21 is configured to execute the computer programs or instructions stored in the memory 22, or to read the data stored in the memory 22, for performing the methods in the method embodiments above.

Optionally, the processor 21 is one or more.

Optionally, the memory 22 is one or more.

Alternatively, the memory 22 may be integrated with the processor 21 or provided separately.

Optionally, as shown in fig. 22, the apparatus 20 further comprises a transceiver 23, the transceiver 23 being used for receiving and/or transmitting signals. For example, the processor 21 is configured to control the transceiver 23 to receive and/or transmit signals.

As an alternative, the apparatus 20 is configured to implement the operations performed by the terminal device in the above method embodiments.

For example, the processor 21 is configured to execute a computer program or instructions stored in the memory 22 to implement the relevant operations of the first terminal device or the second terminal device in the above respective method embodiments.

In implementation, the steps of the above method may be performed by integrated logic circuits of hardware in the processor 21 or by instructions in the form of software. The method disclosed in connection with the embodiments of the present application may be embodied directly in hardware processor execution or in a combination of hardware and software modules in a processor. The software modules may be located in a random access memory, flash memory, read only memory, programmable read only memory, or electrically erasable programmable memory, registers, etc. as well known in the art. The storage medium is located in a memory 22 and the processor 21 reads the information in the memory 22 and in combination with its hardware performs the steps of the method described above. To avoid repetition, a detailed description is not provided herein.

It should be appreciated that in the embodiments of the present application, the processor may be one or more integrated circuits configured to execute related programs to perform the embodiments of the methods of the present application.

A processor (e.g., processor 21) may include one or more processors and be implemented as a combination of computing devices. The processor may each include one or more of the following: microprocessors, microcontrollers, digital signal processors (digital signal processor, DSPs), digital signal processing devices (digital signal processing device, DSPD), application specific integrated circuits (application specific integrated circuit, ASIC), field programmable gate arrays (field programmable gate array, FPGA), programmable logic devices (programmable logic device, PLD), gate logic, transistor logic, discrete hardware circuits, processing circuits, or other suitable hardware, firmware and/or combinations of hardware and software for executing the various functions described in this disclosure. The processor may be a general purpose processor or a special purpose processor. For example, the processor 21 may be a baseband processor or a central processing unit. The baseband processor may be used to process communication protocols and communication data. The central processor may be used to cause the device to execute a software program and process data in the software program. In addition, a portion of the processor may also include nonvolatile random access memory. The processor may also store information of the device type, for example.

The procedure in this application is used in a broad sense to represent software. Non-limiting examples of software include: program code, program, subroutine, instructions, instruction set, code segments, software modules, applications, or software applications, or the like. The program may run in a processor and/or a computer. Such that the apparatus performs the various functions and/or processes described herein.

The memory (e.g., memory 22) may store data required by a processor (e.g., processor 21) when executing software. The memory may be implemented using any suitable memory technology. For example, memory may be any available storage media that can be accessed by a processor and/or computer. Non-limiting examples of storage media include: random access memory (random access memory, RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), compact Disc-ROM (CD-ROM), static RAM, dynamic RAM, DRAM, synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM, DRAM), synchronous DRAM (DRAM), removable media, optical disk storage media, magnetic storage devices, flash memory, registers, state memory, remote mount memory, local or remote memory components, or any other medium capable of carrying or storing software, data, or information and being accessed by a processor/computer. It should be noted that the memory described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

The memory (e.g., memory 22) and the processor (e.g., processor 21) may be provided separately or integrated together. The memory may be used in connection with the processor such that the processor can read information from, store information in, and/or write information to the memory. The memory may be integrated in the processor. The memory and processor may be provided in an integrated circuit (e.g., the integrated circuit may be provided in a UE or other network node).

Fig. 23 is a schematic block diagram of a chip system 30 provided in an embodiment of the present application. The system-on-chip 30 (or may also be referred to as a processing system) includes logic circuitry 31 and an input/output interface 32.

The logic circuit 31 may be a processing circuit in the chip system 30. Logic circuitry 31 may be coupled to the memory unit to invoke instructions in the memory unit so that system-on-chip 30 may implement the methods and functions of the various embodiments of the present application. The input/output interface 32 may be an input/output circuit in the chip system 30, and outputs information processed by the chip system 30, or inputs data or signaling information to be processed into the chip system 30 for processing.

As an alternative, the chip system 30 is configured to implement the operations performed by the terminal device in the above method embodiments.

For example, the logic circuit 31 is configured to implement the operations related to the processing performed by the first terminal device in the above method embodiment, e.g., the operations related to the processing performed by the first terminal device in the embodiments shown in fig. 5, 9, 11, 12, 13, 15, 17, and 19; the input/output interface 32 is configured to implement operations related to transmission and/or reception performed by the first terminal device in the above method embodiment, for example, operations related to transmission and/or reception performed by the first terminal device in the embodiments shown in fig. 5, 9, 11, 12, 13, 15, 17, and 19.

As another example, the logic circuit 31 is configured to implement the operations related to the processing performed by the second terminal device in the above method embodiment, for example, the operations related to the processing performed by the second terminal device in the embodiment shown in fig. 11; the input/output interface 32 is used to implement the operations related to transmission and/or reception performed by the second terminal device in the above method embodiment, for example, the operations related to transmission and/or reception performed by the second terminal device in the embodiment shown in fig. 11.

The embodiments of the present application also provide a computer readable storage medium having stored thereon computer instructions for implementing the method performed by a terminal device (e.g., a first terminal device, and also e.g., a second terminal device) in the above method embodiments.

The embodiments of the present application also provide a computer program product containing instructions that, when executed by a computer, implement the method performed by a terminal device (e.g., a first terminal device, and also e.g., a second terminal device) in the above method embodiments.

The embodiment of the application also provides a communication system, which comprises the first terminal device and the second terminal device in the above embodiments.

The explanation and beneficial effects of the related content in any of the above-mentioned devices can refer to the corresponding method embodiments provided above, and are not repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the above-described division of units is merely a logical function division, and there may be another division manner in actual implementation, for example, a plurality of units or components may be combined or may be integrated into another system, or some features may be omitted, or not performed. Furthermore, the coupling or direct coupling or communication connection shown or discussed with each other may be through some interface, device or unit indirect coupling or communication connection, which may be in electrical, mechanical or other form.

The units described above as separate components may or may not be physically separate, and components shown as units may or may not be physical units, may be located in one place, or may be distributed over a plurality of network units. Some or all of the units may be selected according to actual needs to implement the solution provided in the present application.

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

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

When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the processes or functions described in accordance with embodiments of the present application are produced in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. For example, the computer may be a personal computer, a server, or a network device, etc. The computer instructions may be stored in or transmitted from one computer-readable storage medium to another, for example, by wired (e.g., coaxial cable, fiber optic, digital Subscriber Line (DSL)), or wireless (e.g., infrared, wireless, microwave, etc.) means from one website, computer, server, or data center. With respect to computer readable storage media, reference may be made to the description above.

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 of resource determination, comprising:

the method comprises the steps that first information is received by first terminal equipment in a sensing window, wherein the first information indicates first channel occupation time COT of second terminal equipment, and the first COT comprises resources occupied by a first feedback channel;

the first terminal device excludes reserved resources of the first data associated with the first feedback channel from a candidate resource set in a selection window, and excludes reserved resources of the first feedback channel from the candidate resource set.

2. The method of claim 1, wherein the first data is located at the first COT and/or a second COT, the second COT preceding the first COT.

3. The method according to claim 1 or 2, wherein the first terminal device excluding reserved resources of the first feedback channel from the candidate set of resources, comprising:

The first terminal device excludes part or all of the frequency domain resources on a first time unit from the candidate resource set, wherein the reserved resources of the first feedback channel are located in the first time unit, and the part or all of the frequency domain resources comprise a resource block set where the reserved resources of the first feedback channel are located.

4. A method according to any of claims 1 to 3, characterized in that the reserved resources of the first feedback channel comprise reserved resources for feeding back data within the shared resources of the first COT.

5. The method according to any one of claims 1 to 4, further comprising:

and the first terminal equipment excludes reserved resources which are positioned in front of the time unit of the first feedback channel and are positioned on the first COT from the candidate resource set.

6. The method of claim 5, wherein the first terminal device excluding reserved resources on the first COT that are located before the time unit in which the first feedback channel is located from the candidate set of resources, comprises:

in case a second condition is met, the first terminal device excludes, in the candidate set of resources, reserved resources on the first COT located before the time unit in which the first feedback channel is located,

The second condition includes one or more of: the transmission priority carried on the first feedback channel is greater than or equal to a first threshold value, or the first terminal device is a receiving device corresponding to the first feedback channel.

7. The method according to any one of claims 1 to 6, further comprising:

the first terminal device obtains second information, the second information indicates the first terminal device to determine candidate resources based on COT, the second information is from the second terminal device or network device, or the second information is predefined information or preconfigured information.

8. The method according to any of the claims 1 to 7, characterized in that the reserved resources of the first data are resources determined from the frequency domain resources, the time domain resources of the first data and the reservation period indicated by the side-uplink control information SCI corresponding to the first data.

9. A communication device comprising means or units for performing the method of any one of claims 1 to 8.

10. A communication device comprising a processor for executing a computer program or instructions stored in a memory to cause the device to perform the method of any one of claims 1 to 8.

11. The apparatus of claim 10, further comprising the memory and/or a communication interface coupled with the processor,

the communication interface is used for inputting and/or outputting information.

12. A computer readable storage medium, characterized in that the computer readable storage medium has stored thereon a computer program or instructions, which when run on a communication device, cause the communication device to perform the method according to any of claims 1 to 8.

13. A computer program product, characterized in that the computer program product comprises a computer program or instructions for performing the method of any of claims 1 to 8.

14. A chip, characterized in that the chip is coupled to a memory for reading and executing program instructions stored in the memory for implementing the method according to any of claims 1 to 8.