WO2022222764A1

WO2022222764A1 - Resource determination method and communication apparatus

Info

Publication number: WO2022222764A1
Application number: PCT/CN2022/085619
Authority: WO
Inventors: 刘云; 徐海博; 薛丽霞
Original assignee: 华为技术有限公司
Priority date: 2021-04-23
Filing date: 2022-04-07
Publication date: 2022-10-27
Also published as: CN115243232A

Abstract

The present application provides a resource determination method and a communication apparatus, which relate to the technical field of communications, and which can ensure the reliability of data transmission. The method comprises: a second terminal device receives second information from a first terminal device, wherein the second information indicates at least one first resource and a first time domain resource set, and time domain resource units in which each first resource among the at least one first resource is located belongs to the first time domain resource set; then, according to the at least one first resource and the first time domain resource set, the second terminal device determines a target resource, the target resource being used to transmit service data.

Description

Resource determination method and communication device

This application claims the priority of the Chinese patent application submitted to the State Intellectual Property Office on April 23, 2021, the application number is 202110444568.2, and the invention title is "a method for UE that receives reserved resources to determine conflict", and the application is claimed in 2021 On May 10th, the priority of the Chinese patent application with the application number of 202110507834.1 and the invention title of "Resource Determination Method and Communication Device" was submitted to the State Intellectual Property Office, the entire contents of which are incorporated in this application by reference.

technical field

The present application relates to the field of communication technologies, and in particular, to a resource determination method and a communication device.

Background technique

During communication between the first terminal device and the second terminal device, the second terminal device receives auxiliary information from the first terminal device. Wherein, the auxiliary information indicates a resource recommended to be used (or not recommended to be used) by the first terminal device. The resources indicated by the auxiliary information are determined based on the interference degree and resource occupation status on the side of the first terminal device, so as to assist the second terminal device to select resources through a perception mechanism.

However, all or part of the resources indicated by the auxiliary information may be located outside the resource selection window of the second terminal device, resulting in insufficient utilization of the auxiliary information, and thus the resources selected by the second terminal device cannot fully take into account the conditions of the first terminal device , which affects the reliability of data transmission.

SUMMARY OF THE INVENTION

The embodiments of the present application provide a resource determination method and a communication device, which can ensure the reliability of data transmission.

In order to achieve the above purpose, the embodiment of the present application adopts the following technical solutions:

In a first aspect, an embodiment of the present application provides a method for determining a resource, where the execution body of the method may be a second terminal device, or may be a chip applied in the second terminal device. The following description will be given by taking the execution subject being the second terminal device as an example. The method includes: the second terminal device sends first information to the first terminal device, wherein the first information indicates a second time-domain resource set, and the second time-domain resource set includes at least two time-domain resource units, two time-domain resource units At least one time domain resource unit between resource units does not belong to the second time domain resource set. Then, the second terminal device receives second information from the first terminal device, where the second information indicates at least one first resource, and the time domain resource unit where each first resource in the at least one first resource is located belongs to the second time domain Collection of domain resources. Afterwards, the second terminal device determines a target resource according to the at least one first resource, where the target resource is used for transmitting service data.

That is to say, the second terminal device sends the first information to the first terminal device, so that the first terminal device is more targeted when determining the first resource, that is, the time when each first resource in the at least one first resource is located. The domain resource unit belongs to the second time domain resource set. Since the second time-domain resource set is a set of time-domain resource units known to the second terminal device, the second terminal device determines, on the known time-domain resource units, the target resource according to at least one first resource, that is, The second terminal equipment makes full use of the second information when performing resource selection, so as to take into account the interference status of the first terminal equipment, thereby ensuring the reliability of data transmission.

In a first possible design, the second time-domain resource set is determined based on a second resource selection window, and the second resource selection window is used for the second terminal device to select resources. That is, the time domain resource elements in the second time domain resource set are within the second resource selection window.

With reference to the first aspect or the first possible design of the first aspect, in the second possible design, the first information indicates the location of the starting time-domain resource unit and the interval from the starting time-domain resource unit . That is, the first information indicates the specific position of each time domain resource unit in the second time domain resource set.

With reference to the first aspect, the first possible design of the first aspect, or the second possible design of the first aspect, in a third possible design, the first information includes at least one of the following: indication information, the first a business information. The indication information indicates that the second terminal device is a partial sensing terminal, and the first service is a service corresponding to the service data.

In combination with the first aspect, the first possible design of the first aspect, the second possible design of the first aspect, or the third possible design of the first aspect, in the fourth possible design, the first The resources include resources recommended for use by the first terminal device. That is to say, with respect to the resources other than the at least one first resource in the first resource selection window, the interference degree of the at least one first resource is relatively low. Alternatively, the first resource includes a resource recommended not to be used by the first terminal device. That is to say, with respect to the resources other than the at least one first resource in the first resource selection window, the interference degree of the at least one first resource is relatively high.

Combining the first aspect, the first possible design of the first aspect, the second possible design of the first aspect, or the third possible design of the first aspect, in the fifth possible design, the first The resources include resources that the first terminal device tends to use. Alternatively, the first resource includes resources that the first terminal device tends not to use.

In a second aspect, an embodiment of the present application provides a method for determining a resource, where the execution body of the method may be a first terminal device, or may be a chip applied in the first terminal device. The following description will be given by taking the execution subject as the first terminal device as an example. The method includes: a first terminal device receiving first information from a second terminal device, wherein the first information indicates a second time domain resource set, and the second time domain resource set includes at least two time domain resource units, two time domain resource units. At least one time domain resource unit between the domain resource units does not belong to the second time domain resource set. Then, the first terminal device determines at least one first resource within the second set of time domain resources. Afterwards, the first terminal device sends second information to the second terminal device, wherein the second information indicates at least one first resource.

In a first possible design, the first terminal device determining at least one first resource in the second time domain resource set includes: the first terminal device determining a candidate resource in the second time domain resource set, wherein the candidate resource The time domain resource unit where it is located belongs to the first time domain resource set, the first time domain resource set is determined based on the first resource selection window, and the first resource selection window is used for the first terminal device to select resources. Then, the first terminal device determines a second resource among the candidate resources, wherein the second resource belongs to at least one first resource.

That is to say, in the case where there is an intersection between the first resource selection window and the second resource selection window, the first terminal device processes the resources on the intersection to obtain the second resource. The first terminal device then feeds back the information of the second resource to the second terminal device, which avoids the problem that the first terminal device and the second terminal device are not aligned on the resource selection window.

In a second possible design, the first terminal device determines at least one first resource in the second time domain resource set, including: the first terminal device determines a candidate resource in the second time domain resource set, wherein the candidate resource The time domain resource unit where it is located does not belong to the first time domain resource set, the first time domain resource set is determined based on the first resource selection window, and the first resource selection window is used for the first terminal device to select resources. Then, the first terminal device determines a third resource among the candidate resources, wherein the third resource belongs to at least one first resource.

That is to say, the first terminal device determines the third resource from the resources within the second resource selection window but outside the first resource selection window, so that the third resource is within the second resource selection window, so that the third resource can be Assist the second terminal device in resource selection.

With reference to the second possible design of the second aspect, in a third possible design, the first terminal device determines candidate resources in the second time domain resource set, including: when the resource amount of the second resource is less than a threshold Next, the first terminal device determines candidate resources in the second time domain resource set. The second resource belongs to at least one first resource, and the time domain resource unit where the second resource is located belongs to the first time domain resource set.

That is to say, since the second resource is within both the first resource selection window and the second resource selection window, the second resource is the most preferred resource. When the resource amount of the second resource is insufficient, the first terminal device determines the third resource, which is beneficial to ensure the reliability of data transmission.

With reference to the second possible design of the second aspect, or the third possible design of the second aspect, in a fourth possible design, the first terminal device determines the third resource among the candidate resources, including: the first The terminal device performs resource detection to obtain the perception result of the candidate resource. Then, the first terminal device determines the third resource according to the sensing result.

That is to say, the first terminal device determines the third resource by adding a perceptual time domain resource unit, thereby ensuring the reliability of data transmission to a certain extent.

With reference to the second possible design of the second aspect or the third possible design of the second aspect, in a fifth possible design, the first terminal device determines a third resource among the candidate resources, including: the first terminal The device determines the third resource according to the candidate resource and the preset ratio. That is to say, the first terminal device extracts a certain proportion of resources from the candidate resources as the third resources.

With reference to the fifth possible design of the second aspect, in the sixth possible design, the preset ratio is determined based on the resource amount of the second resource. Wherein, the second resource belongs to at least one first resource, and the time domain resource unit where the second resource is located belongs to the first time domain resource set, so as to ensure that the resource amount of the target resource meets the requirements.

Combining the second aspect and any one of the first possible design to the sixth possible design of the second aspect, in the seventh possible design, the second time domain resource set is based on the second resource selection window It is determined that the second resource selection window is used for the second terminal device to perform resource selection.

With reference to the second aspect and any one of the first possible design to the seventh possible design of the second aspect, in the eighth possible design, the first information indicates the location of the starting time domain resource unit, and the interval from the starting time domain resource unit.

With reference to the second aspect and any one of the first possible design to the eighth possible design of the second aspect, in the ninth possible design, the first information includes at least one of the following: indication information, the first a business information. The indication information indicates that the second terminal device is a partial sensing terminal, and the first service is a service corresponding to the service data.

With reference to the second aspect and any one of the first possible designs to the ninth possible designs of the second aspect, in the tenth possible design, the first resources include resources recommended for use by the first terminal device. Alternatively, the first resource includes a resource recommended not to be used by the first terminal device.

In a third aspect, an embodiment of the present application provides a method for determining a resource, where the execution body of the method may be a second terminal device, or may be a chip applied in the second terminal device. The following description will be given by taking the execution subject being the second terminal device as an example. The method includes: the second terminal device receives second information from the first terminal device, wherein the second information indicates at least one first resource and a first time domain resource set, where each first resource in the at least one first resource is located The time domain resource unit belongs to the first time domain resource set. Then, the second terminal device determines a target resource according to the at least one first resource and the first set of time domain resources, where the target resource is used for transmitting service data.

That is, the second terminal device receives the second information from the first terminal device for reference by the second terminal device when determining the target resource. In addition to indicating at least one first resource, the second information also indicates a first set of time domain resources. Therefore, the first time-domain resource set is also a set of time-domain resource units known to the second terminal device, and the second terminal device determines, on the known time-domain resource units, the target resource according to at least one first resource, that is, the first resource. The second terminal equipment makes full use of the second information when selecting resources, so as to take into account the interference status of the first terminal equipment, so as to ensure the reliability of data transmission.

In a first possible design, the first time-domain resource set is determined based on a first resource selection window, and the first resource selection window is used for the first terminal device to select resources. That is, the time domain resource units in the first time domain resource set are within the first resource selection window.

With reference to the third aspect, or the first possible design of the third aspect, in the second possible design, the second information indicates the location of the starting time-domain resource unit, and the relationship with the starting time-domain resource unit. interval. That is to say, the second information also indicates the specific location of the time domain resource unit in the first time domain resource set.

With reference to the third aspect, the first possible design of the third aspect, or the second possible design of the third aspect, in the third possible design, the second information includes at least one of the following: a first resource selection The starting position of the window, the window length of the first resource selection window, or the number of time-domain resource units in the first resource selection window. The first resource selection window is used for the first terminal device to select resources.

In combination with the third aspect, the first possible design of the third aspect, the second possible design of the third aspect, or the third possible design of the third aspect, in the fourth possible design, the second The information includes indication information, wherein the indication information indicates that the first terminal device is a partially aware terminal.

With reference to the third aspect and any one of the first possible design to the fourth possible design of the third aspect, in the fifth possible design, the target resource includes the second resource. Wherein, the second resource is determined based on at least one first resource and belongs to a second time-frequency resource set, and the second time-frequency resource set is a resource set determined by the second terminal device based on the resource sensing result of the second resource selection window.

That is to say, the second resource is not only recommended for use by the first terminal device, but also a resource recommended for use by the second terminal device. misalignment problem.

With reference to the third aspect and any one of the first possible designs to the fifth possible designs of the third aspect, in the sixth possible design, the target resource includes at least one of the following:

The first item is the third resource, where the third resource is determined based on at least one first resource and does not belong to the second time-frequency resource set, and the second time-frequency resource set is the resource selected by the second terminal device based on the second resource selection window A collection of resources determined by the perception result.

The second item is the fourth resource, where the fourth resource belongs to the second time-frequency resource set, and the time-domain resource unit where the fourth resource is located does not belong to the first time-domain resource set.

In this way, when the target resource includes the third resource, the third resource is a resource recommended by the first terminal device but not recommended by the second terminal device, which ensures the reliability of data transmission to a certain extent. In the case where the target resource includes the fourth resource, the fourth resource is a resource recommended by the second terminal device, but the first terminal device does not indicate whether to use the recommended resource, which ensures the reliability of data transmission to a certain extent.

In combination with the sixth possible design of the third aspect, in the seventh possible design, the third resource is a resource filtered according to the first preset ratio.

In combination with the sixth possible design of the third aspect, in the eighth possible design, the fourth resource is a resource filtered according to the second preset ratio.

In combination with the sixth possible design of the third aspect, the seventh possible design of the third aspect, or the eighth possible design of the third aspect, in the ninth possible design, the target resource also includes the second resource, and the resource amount of the second resource is lower than the first threshold. The second resource is determined based on at least one first resource and belongs to the second time-frequency resource set.

Since the second resource is both recommended for use by the first terminal device and a resource recommended for use by the second terminal device, the second resource is the most preferred resource. When the resource amount of the second resource is insufficient, the second terminal device determines at least one of the third resource and the fourth resource, which is beneficial to ensure the reliability of data transmission.

Combining the third aspect and any one of the first possible design to the fourth possible design in the third aspect, in the tenth possible design, the target resource includes the fifth resource in the second resource selection window . The second resource selection window is used for resource selection by the second terminal device, and the fifth resource is a resource determined based on at least one first resource and satisfying a preset condition.

That is to say, the fifth resource is not only recommended for use by the first terminal device, but also a resource recommended for use by the second terminal device. misalignment problem.

In combination with the third aspect, the first possible design of the third aspect, the second possible design of the third aspect, the third possible design of the third aspect, the fourth possible design of the third aspect, or In a tenth possible design of the third aspect, in the eleventh possible design, the target resource includes at least one of the following:

The first item is the sixth resource in the second resource selection window. The second resource selection window is used for resource selection by the second terminal device, the time domain resource unit where the sixth resource is located does not belong to the first time domain resource set, and the sixth resource satisfies a preset condition.

The second item, the second resource selects the seventh resource outside the window. Wherein, the seventh resource is determined based on at least one first resource.

That is to say, when the target resource includes the sixth resource, the sixth resource is a resource recommended by the second terminal device, but the first terminal device does not indicate whether it is recommended to be used, which ensures the reliability of data transmission to a certain extent. In the case where the target resource includes the seventh resource, the seventh resource is a resource recommended by the first terminal device, but the second terminal device does not indicate whether it is recommended to be used, which ensures the reliability of data transmission to a certain extent.

With reference to the eleventh possible design of the third aspect, in the twelfth possible design, the resource amount of the seventh resource is determined based on at least one of the following:

The first item, the preconfigured scale value.

The second item is the resource amount difference between the fifth resource and the target resource, where the fifth resource is located in the second resource selection window. The fifth resource is a resource determined based on at least one first resource and satisfying a preset condition.

That is to say, the seventh resource may be a resource filtered according to a preset ratio value, so as to simplify the operation process of the second terminal device. Alternatively, the seventh resource may also be a resource determined in combination with the resource amount difference, so as to ensure that the resource amount of the target resource meets the requirements.

With reference to the eleventh possible design of the third aspect, or the twelfth possible design of the third aspect, in the thirteenth possible design, the target resource further includes the fifth resource in the second resource selection window , and the resource amount of the fifth resource is lower than the second threshold. The fifth resource is a resource determined based on at least one first resource and satisfying a preset condition.

Since the fifth resource is both recommended for use by the first terminal device and a resource recommended for use by the second terminal device, the fifth resource is the optimal resource. In the case of insufficient resources of the fifth resource, the second terminal device Only determining at least one of the sixth resource and the seventh resource is beneficial to ensure the reliability of data transmission.

In combination with the eleventh possible design of the third aspect, the twelfth possible design of the third aspect, or the thirteenth possible design of the third aspect, in the fourteenth possible design, the target resource It also includes the fifth resource and the sixth resource in the second resource selection window, and the sum of the resource amounts of the fifth resource and the sixth resource is lower than the third threshold. The fifth resource is a resource determined based on at least one first resource and satisfying a preset condition.

Since both the fifth resource and the sixth resource are resources that the first terminal device does not explicitly indicate to recommend not to use, and the seventh resource is a resource that the first terminal device indicates to recommend not to use, therefore, compared with the seventh resource, The interference degree of the fifth resource and the sixth resource is lower, which is beneficial to ensure the reliability of data transmission. The second terminal device determines the seventh resource only when the sum of the resource amounts of the fifth resource and the sixth resource is insufficient, which is beneficial to ensure the reliability of data transmission.

With reference to the third aspect, any one of the first possible design to the fourteenth possible design of the third aspect, in the fifteenth possible design, the first resource includes the recommended use of the first terminal device. resource. Alternatively, the first resource includes a resource recommended not to be used by the first terminal device.

In a fourth aspect, an embodiment of the present application provides a method for determining a resource, where the execution body of the method may be the first terminal device, or may be a chip applied in the first terminal device. The following description will be given by taking the execution subject as the first terminal device as an example. The method includes: the first terminal device determines at least one first resource in the first time domain resource set, wherein a time domain resource unit where each first resource in the at least one first resource is located belongs to the first time domain resource set. Then, the first terminal device sends second information to the second terminal device, where the second information indicates at least one first resource and a first set of time domain resources.

In a first possible design, the first time-domain resource set is determined based on a first resource selection window, and the first resource selection window is used for the first terminal device to select resources.

With reference to the fourth aspect, or the first possible design of the fourth aspect, in the second possible design, the second information indicates the location of the starting time-domain resource unit and the interval from the starting time-domain resource unit .

With reference to the fourth aspect, the first possible design of the fourth aspect, or the second possible design of the fourth aspect, in the third possible design, the second information includes at least one of the following: a first resource selection window , the window length of the first resource selection window, or the number of time-domain resource units in the first resource selection window. The first resource selection window is used for the first terminal device to select resources.

In combination with the fourth aspect, the first possible design of the fourth aspect, the second possible design of the fourth aspect, or the third possible design of the fourth aspect, in the fourth possible design, the second information Including indication information, wherein the indication information indicates that the first terminal device is a partially aware terminal.

With reference to the fourth aspect and any one of the first possible design to the fourth possible design of the fourth aspect, in the fifth possible design, the first resource includes a resource recommended for use by the first terminal device. Alternatively, the first resource includes a resource recommended not to be used by the first terminal device.

In a fifth aspect, an embodiment of the present application provides a method for determining a resource, where the execution body of the method may be a second terminal device, or may be a chip applied in the second terminal device. The following description will be given by taking the execution subject being the second terminal device as an example. The method includes: the second terminal device receives second information from the first terminal device, wherein the second information indicates at least one first resource, the at least one first resource is located outside the second resource selection window, and the second resource selection window is used for The second terminal device performs resource selection. Then, the second terminal device determines a target resource according to the at least one first resource, where the target resource is located outside the second resource selection window and is used for transmitting service data.

That is to say, after the second terminal device receives the second information from the first terminal device, even if the second information indicates the first resource located outside the second resource selection window, the second terminal device can also indicate in combination with the second information The target resource is determined by the first resource, and the target resource outside the second resource selection window is used to transmit service data. Since the second terminal equipment makes full use of the second information when selecting resources, the interference status of the first terminal equipment is taken into account, thereby ensuring the reliability of data transmission.

In a first possible design, the second terminal device determining the target resource according to the at least one first resource includes: the second terminal device determining the target resource in the at least one first resource according to the ratio value. That is to say, the second terminal device extracts a certain amount of resources from the first resources as target resources.

In a second possible design, the second terminal device determines the target resource according to the at least one first resource, including: the second terminal device performs resource detection to obtain a perception result of the at least one first resource. Then, the second terminal device determines the target resource according to the sensing result.

That is, the second terminal device selects a certain number of resources from the first resources as target resources by increasing the sensing time domain resource unit.

With reference to the first possible design or the second possible design of the fifth aspect, in a third possible design, the second terminal device determines the target resource according to at least one first resource, including: In the case of the preset condition, the second terminal device determines the target resource according to the at least one first resource. The first preset condition includes at least one of the following:

The first item is that the resource amount of the second resource is less than the first preset value, where the second resource is a resource determined based on at least one first resource within the second resource selection window.

In the second item, the resource amount of the third resource is less than the second preset value, where the third resource is a resource that satisfies the second preset condition among the second resources.

The third item, the resource amount of the fourth resource is less than the third preset value, wherein the fourth resource belongs to the second resource and belongs to the second time-frequency resource set, and the second time-frequency resource set is the second terminal device based on the second The resource set determined by the resource sensing result of the resource selection window.

When the first preset condition includes the first item, since the second resource is a resource recommended by the first terminal device within the second resource selection window, the second terminal device preferentially determines the resource amount of the second resource. When the amount of resources of the second resource is insufficient, the second terminal device is outside the second resource selection window, and the resources recommended by the first terminal device (ie, the first resource) are screened for resources, so as to obtain the target resource for use The amount of resources for transmitting service data meets the requirements.

When the first preset condition includes the second item, since the second resource is a resource recommended by the first terminal device within the second resource selection window, the second terminal device preferentially determines the resource amount of the second resource. In the case where the resources satisfying the second preset condition in the second resources are insufficient, the second terminal device is outside the second resource selection window, and the resources recommended by the first terminal device (ie, the first resources) are screened for resources, thereby The target resource is obtained, so that the amount of resources used for transmitting service data can meet the requirements.

In the case where the first preset condition includes the third item, since the fourth resource belongs to the resource at the intersection of the first resource selection window and the second resource selection window, that is, the fourth resource is the most preferred resource, the second terminal The device preferentially determines the fourth resource, and only when the amount of resources of the fourth resource is insufficient, the second terminal device is outside the second resource selection window, and the first terminal device recommends to use resources (ie, the first resource) to filter resources, Thereby, target resources are obtained, so that the amount of resources used for transmitting service data can meet the requirements.

With reference to the fifth aspect and any one of the first possible design to the third possible design of the fifth aspect, in the fourth possible design, the resource determination method in this embodiment of the present application further includes: a second terminal The device determines the fourth resource in the second resource selection window. Wherein, the fourth resource is used to transmit service data to the first terminal device, and satisfies the following two items:

The first item, the fourth resource is determined based on the at least one first resource.

In the second item, the time domain resource unit where the fourth resource is located belongs to the second time-frequency resource set, where the second time-frequency resource set is a resource set determined by the second terminal device based on the resource sensing result of the second resource selection window.

That is, the second terminal device can also determine the fourth resource within the second resource selection window. The fourth resource is a resource supported by both the first terminal device and the second terminal device, which is beneficial to ensure the reliability of data transmission.

With reference to the fifth aspect and any one of the first possible design to the third possible design of the fifth aspect, in the fifth possible design, the resource determination method in this embodiment of the present application further includes: a second terminal The device determines a fifth resource in the second resource selection window, where the fifth resource is used to transmit service data to the first terminal device, and the fifth resource satisfies the following two items:

The first item, the fifth resource does not belong to at least one first resource.

In the second item, the time domain resource unit where the fifth resource is located belongs to the second time-frequency resource set, where the second time-frequency resource set is a resource set determined by the second terminal device based on the resource sensing result of the second resource selection window.

That is to say, the second terminal device can also determine the fifth resource in the second resource selection window. Since the fifth resource is not indicated by the first terminal device to be recommended for use, but recommended by the second terminal device, to a certain extent The reliability of data transmission is guaranteed.

With reference to the fifth possible design of the fifth aspect, in a sixth possible design, the second terminal device determines the fifth resource within the second resource selection window, including: when the resource amount of the fourth resource is lower than the threshold In the case of , the second terminal device determines the fifth resource within the second resource selection window. The fourth resource is used to transmit service data to the first terminal device and satisfies the following two items:

In the second item, the time domain resource unit where the fourth resource is located belongs to the second time-frequency resource set.

Since the fourth resource belongs to the resource on the intersection of the first resource selection window and the second resource selection window, it is a preferred resource. When the resource amount of the fourth resource is insufficient, the second terminal device determines the fifth resource so that the resource amount of the resource for transmitting service data meets the requirement.

With reference to the fifth aspect and any one of the first possible design to the sixth possible design of the fifth aspect, in the seventh possible design, the first resource includes a resource recommended for use by the first terminal device.

With reference to the fifth aspect, in an eighth possible design, the second terminal device determines the target resource according to the at least one first resource, including: the second terminal device determines the target resource among the candidate resources according to the proportional value, wherein the candidate The resources include resources other than the at least one first resource outside the second resource selection window.

That is to say, in the case where the first resource is a resource recommended not to be used by the first terminal device, the second terminal device determines the target resource from resources other than the first resource outside the second resource selection window, and This ensures the reliability of data transmission to a certain extent.

With reference to the fifth aspect, in a ninth possible design, the second terminal device determines the target resource according to at least one first resource, including: the second terminal device performs resource detection to obtain a perception result of the candidate resource, wherein the candidate resource The resources include resources other than the at least one first resource outside the second resource selection window. Then, the second terminal device determines the target resource according to the sensing result.

That is to say, the second terminal device selects a certain number of resources from resources outside the second resource selection window and other than the above-mentioned first resource by adding a perceptual time domain resource unit as the target resource.

With reference to the eighth possible design or the ninth possible design of the fifth aspect, in the tenth possible design, the second terminal device determines the target resource according to at least one first resource, including: In the case of setting the conditions, the second terminal device determines the target resource according to the at least one first resource. Wherein, the third preset condition includes at least one of the following:

The first item is that the resource amount of the second resource is less than the first preset value, wherein the second resource does not belong to at least one first resource, but belongs to the second time-frequency resource set, and the second time-frequency resource set is the second terminal equipment. The resource set determined based on the resource perception result of the second resource selection window.

In the second item, the resource amount of the second time-frequency resource set is smaller than the second preset value.

In the case where the third preset condition includes the first item, because the second resource does not belong to the above-mentioned first resource, that is, the first terminal device does not indicate a resource that is not recommended to be used, and the second resource belongs to the second terminal device recommended to use Therefore, the second terminal device preferentially determines the resource amount of the second resource. In the case that the second resource is insufficient, the second terminal device selects the resources outside the window from the second resource, and the resources other than the above-mentioned first resource are selected. In order to ensure the reliability of data transmission to a certain extent, the target resource is determined.

In the case where the third preset condition includes the second item, since the resources in the second time-frequency resource set belong to the resources recommended by the second terminal device, the second terminal device preferentially determines the resources in the second time-frequency resource set resource, in the case of insufficient resources in the second time-frequency resource set, the second terminal device determines the target resource from the resources outside the second resource selection window and in addition to the above-mentioned first resource, so that to a certain extent to ensure the reliability of data transmission.

With reference to the fifth aspect and any one of the eighth possible design to the tenth possible design of the fifth aspect, in the eleventh possible design, the resource determination method in this embodiment of the present application further includes: a second The terminal device determines the second resource. The second resource is used to transmit service data to the first terminal device, the second resource does not belong to at least one first resource, but belongs to a second time-frequency resource set, and the second time-frequency resource set is the second terminal device based on the second The resource set determined by the resource sensing result of the resource selection window.

That is, the second terminal device can also determine the second resource within the second resource selection window. The second resource does not belong to the above-mentioned first resource, that is, the first terminal device does not indicate a resource recommended not to be used, and the second resource belongs to the resource recommended to be used by the second terminal device, which can ensure the reliability of data transmission.

With reference to the fifth aspect and any one of the eighth possible design to the eleventh possible design of the fifth aspect, in the twelfth possible design, the first resource includes that the first terminal device recommends not to use Resources.

In a sixth aspect, an embodiment of the present application provides a communication device. The communication device may be the second terminal device in the first aspect or any possible design of the first aspect, or the communication device may be the third terminal device described above. The second terminal device in any possible design of the aspect or the third aspect, or the communication device may be the second terminal device in the fifth aspect or any possible design of the fifth aspect; A device in the above-mentioned second terminal device, or a chip that implements the function of the above-mentioned second terminal device; the communication device includes a module, unit, or means (means) corresponding to the above-mentioned method, and the module, unit, or means can be implemented through hardware. Implementation, software implementation, or corresponding software implementation through hardware execution. The hardware or software includes one or more modules or units corresponding to the above functions.

In a seventh aspect, an embodiment of the present application provides a communication device. The communication device may be the first terminal device in the second aspect or any possible design of the second aspect, or the communication device may be the fourth terminal described above. The first terminal device in any possible design of the aspect or the fourth aspect; or a device arranged in the above-mentioned first terminal device, or a chip implementing the function of the above-mentioned first terminal device; the communication device includes implementing the above-mentioned method Corresponding modules, units, or means, the modules, units, or means may be implemented by hardware, software, or by hardware executing corresponding software. The hardware or software includes one or more modules or units corresponding to the above functions.

In an eighth aspect, an embodiment of the present application provides a communication device, including: a processor and a memory; the memory is used to store a computer instruction, and when the processor executes the instruction, the communication device is made to perform any one of the above-mentioned aspects or any In one aspect, the method performed by the second terminal device in any possible design. The communication apparatus may be the second terminal device in the first aspect or any possible design of the first aspect, or a chip that implements the functions of the second terminal device. Alternatively, the communication device may be the second terminal device in the third aspect or any possible design of the third aspect, or a chip that implements the functions of the second terminal device. Alternatively, the communication device may be the second terminal device in the fifth aspect or any possible design of the fifth aspect, or a chip that implements the functions of the second terminal device. Alternatively, the communication device may be the first terminal device in the second aspect or any possible design of the second aspect, or a chip that implements the function of the first terminal device. Alternatively, the communication device may be the first terminal device in the fourth aspect or any possible design of the fourth aspect, or a chip that implements the function of the first terminal device.

In a ninth aspect, an embodiment of the present application provides a communication device, including: a processor; the processor is coupled to a memory, and is configured to read and execute instructions in the memory, so that the communication device performs any of the above-mentioned aspects Or a method executed by the second terminal device in any possible design of any aspect. The communication apparatus may be the second terminal device in the first aspect or any possible design of the first aspect, or a chip that implements the functions of the second terminal device. Alternatively, the communication device may be the second terminal device in the third aspect or any possible design of the third aspect, or a chip that implements the functions of the second terminal device. Alternatively, the communication device may be the second terminal device in the fifth aspect or any possible design of the fifth aspect, or a chip that implements the functions of the second terminal device. Alternatively, the communication device may be the first terminal device in the second aspect or any possible design of the second aspect, or a chip that implements the function of the first terminal device. Alternatively, the communication device may be the first terminal device in the fourth aspect or any possible design of the fourth aspect, or a chip that implements the function of the first terminal device.

In a tenth aspect, an embodiment of the present application provides a chip, including a logic circuit and an input and output interface. The input and output interfaces are used for communication with modules other than the chip. For example, the chip may be a chip that implements the function of the second terminal device in the first aspect or any possible design of the first aspect. The input and output interface is used for inputting the second information and for outputting the first information. A logic circuit is used to run a computer program or instructions to implement the method in the above first aspect or any possible design of the first aspect. For another example, the chip may be a chip that implements the function of the second terminal device in the third aspect or any possible design of the third aspect. The input and output interface is used for inputting the second information. A logic circuit is used to run a computer program or instructions to implement the method in the above third aspect or any possible design of the third aspect. For another example, the chip may be a chip that implements the function of the second terminal device in the fifth aspect or any possible design of the fifth aspect. The input and output interface is used for inputting the second information. The logic circuit is used to run the computer program or instructions to implement the method in the above fifth aspect or any possible design of the fifth aspect. For another example, the chip may be a chip that implements the function of the first terminal device in the second aspect or any possible design of the second aspect. The input and output interface is used for inputting the first information and for outputting the second information. A logic circuit is used to run a computer program or instructions to implement the method in the above second aspect or any possible design of the second aspect. For another example, the chip may be a chip that implements the function of the first terminal device in the fourth aspect or any possible design of the fourth aspect. The input and output interface is used for outputting the second information. The logic circuit is used to run the computer program or instructions to implement the method in the above fourth aspect or any possible design of the fourth aspect.

In an eleventh aspect, an embodiment of the present application provides a computer-readable storage medium, where instructions are stored in the computer-readable storage medium, and when the computer-readable storage medium runs on a computer, the computer can execute any one of the preceding aspects. method.

In a twelfth aspect, embodiments of the present application provide a computer program product including instructions, which, when run on a computer, enables the computer to execute the method in any one of the foregoing aspects.

In a thirteenth aspect, embodiments of the present application provide a circuit system, where the circuit system includes a processing circuit configured to perform the method according to any one of the foregoing aspects.

In a fourteenth aspect, an embodiment of the present application provides a communication system, where the communication system includes the first terminal device and the second terminal device in any one of the foregoing aspects.

Wherein, the technical effect brought by any one of the designs in the sixth aspect to the fourteenth aspect may refer to the beneficial effects in the corresponding method provided above, which will not be repeated here.

Description of drawings

FIG. 1 is a schematic diagram of resource distribution of a full perception mechanism provided by an embodiment of the present application;

FIG. 2 is a schematic diagram of resource distribution of a partial sensing mechanism provided by an embodiment of the present application;

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

FIG. 4 is a schematic diagram of the architecture of a communication system provided by an embodiment of the present application;

FIG. 5 is a schematic diagram of the architecture of still another communication system provided by an embodiment of the present application;

FIG. 6 is a schematic flowchart of a resource determination method provided by an embodiment of the present application;

FIG. 7a is a schematic flowchart of still another resource determination method provided by an embodiment of the present application;

FIG. 7b is a schematic flowchart of another resource determination method provided by an embodiment of the present application;

FIG. 8a is a schematic flowchart of another resource determination method provided by an embodiment of the present application;

FIG. 8b is a schematic diagram of resource distribution provided by an embodiment of the present application;

FIG. 9a is a schematic flowchart of another resource determination method provided by an embodiment of the present application;

FIG. 9b is still another schematic diagram of resource distribution provided by an embodiment of the present application;

FIG. 9c is a schematic flowchart of another resource determination method provided by an embodiment of the present application;

FIG. 9d is another schematic diagram of resource distribution provided by an embodiment of the present application;

FIG. 10 is a schematic flowchart of another resource determination method provided by an embodiment of the present application;

FIG. 11a is another schematic diagram of resource distribution provided by an embodiment of the present application;

FIG. 11b is a schematic flowchart of another resource determination method provided by an embodiment of the present application;

FIG. 11c is a schematic flowchart of another resource determination method provided by an embodiment of the present application;

FIG. 11d is another schematic diagram of resource distribution provided by an embodiment of the present application;

FIG. 12a is another schematic diagram of resource distribution provided by an embodiment of the present application;

FIG. 12b is a schematic flowchart of another resource determination method provided by an embodiment of the present application;

FIG. 12c is a schematic flowchart of another resource determination method provided by an embodiment of the present application;

FIG. 12d is another schematic diagram of resource distribution provided by an embodiment of the present application;

FIG. 13 is a schematic structural diagram of a communication device according to an embodiment of the present application;

FIG. 14 is a schematic structural diagram of still another communication apparatus provided by an embodiment of the present application.

Detailed ways

The terms "first" and "second" in the description and drawings of the present application are used to distinguish different objects, or to distinguish different processing of the same object, rather than to describe a specific order of the objects. Furthermore, references to the terms "comprising" and "having" in the description of this application, and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the listed steps or units, but optionally also includes other unlisted steps or units, or optionally also Include other steps or units inherent to these processes, methods, products or devices. In the embodiments of the present application, "a plurality of" includes two or more. In the embodiments of the present application, words such as "exemplary" or "for example" are used to represent examples, illustrations or illustrations. Any embodiments or designs described in the embodiments of the present application as "exemplary" or "such as" should not be construed as preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "such as" is intended to present the related concepts in a specific manner. In this embodiment of the present application, "transmit" may include "send" or "receive", and may also include both sending and receiving, depending on the specific situation.

First, the full perception mechanism involved in this application is introduced.

In the 14th version of the protocol (release 14, R14), the vehicle and all things (vehicle to X, V2X) introduced a full perception mechanism, the specific processing process is as follows:

Step 1: The second terminal device acquires the service data to be sent.

Exemplarily, referring to FIG. 1 , the second terminal device has new service data arriving at or near time n, and needs to send service data to other terminal devices (eg, the first terminal device).

Step 2: The second terminal device determines a sensing window (sensing window) and a resource selection window (resource selection window).

Exemplarily, referring to FIG. 1 , the perception window is a preset duration before time n, such as 1000 ms. The start time of the perception window can be recorded as: nT ₀ , and the end time of the perception window can be recorded as: nT _proc,0 . The resources in the perception window include resources for periodic traffic and resources for aperiodic traffic. The interval between periodically transmitted resources is identified as a gap, that is, a transmission period. The transmission period is generally an integer multiple of 100ms, and may also be 20ms or 50ms. The sensing window may also be described as a listening window, which is not limited in this embodiment of the present application.

Exemplarily, referring to FIG. 1 , the resource selection window is a preset duration after time n. The start time of the resource selection window can be recorded as: n+T ₁ , and the end time of the resource selection window can be recorded as: n+T ₂ . The resources in the resource selection window belong to candidate resources.

Step 3: The second terminal device selects a transmission resource in the resource selection window according to the perception result of the perception window, and reports to the medium access control (Medium Access Control, MAC) layer.

Exemplarily, in the full sensing mechanism, the second terminal device senses all resources within the sensing window to obtain sensing results. As shown in FIG. 1 , the second terminal device senses resources within the sensing window (eg, resources for periodic transmission and resources for aperiodic transmission). Then, the second terminal device selects the resources in the resource selection window according to the sensing result. For example, the second terminal device selects resources based on the reference signal received power (RSRP) threshold of the sidelink (SL), so as to filter out X% resources from the resource selection window, and report to the MAC layer . The reference signal received power threshold may also be replaced with a reference signal received power threshold, which is denoted as SL-Thres-RSRP-List. The reference signal received power threshold is determined based on pi and pj. Wherein, pi is the priority of the service to be transmitted on the second terminal device, and pj is the priority of the service to be transmitted on the resource of the perception window. If the RSRP measurement value of a certain resource exceeds the reference signal received power threshold, the second terminal device determines that the resource is unavailable; otherwise, if the RSRP measurement value of a certain resource does not exceed the reference signal received power threshold, Then, the second terminal device determines that the resource is available and belongs to the resource to be selected, so that further processing steps such as random selection can be performed subsequently. Generally, the higher the priority of the service to be transmitted on the second terminal device, the lower the requirement for interference, that is, the higher the value of the reference signal received power threshold value, so that more resources can be covered.

In order to further reduce the power consumption on the side of the terminal device, the second terminal device may adopt a partial sensing mechanism. Exemplarily, the sensing window and the resource selection window still meet certain periodicity requirements, but the resources (eg, time slots) within the sensing window and the resource selection window are discontinuous. For example, referring to FIG. 2, the time slots within the resource selection window are spaced with _a period T1. In this way, the number of time slots available to the second terminal device is reduced, and the number of perceived time slots is also reduced, thereby reducing the power consumption of the second terminal device.

In order to further improve the reliability of data transmission, when the second terminal device selects resources, the interference situation on the side of the first terminal device is taken into consideration. Exemplarily, referring to FIG. 3 , the second terminal device sends a trigger message to the first terminal device. Correspondingly, the first terminal device receives the trigger message from the second terminal device. The trigger message carries information such as priority of the service data to be transmitted, delay requirements and the like. The first terminal device selects resources in the resource selection window according to the information carried in the trigger message, so as to obtain resources recommended by the first terminal device (or not recommended to be used). After that, the first terminal device sends auxiliary information to the second terminal device. Correspondingly, the second terminal device receives the auxiliary information from the first terminal device. Wherein, the auxiliary information indicates a resource recommended to be used (or not recommended to be used) by the first terminal device. The resources indicated by the auxiliary information are determined based on the interference degree and resource occupation status on the side of the first terminal device, so as to assist the second terminal device to select resources through a full sensing mechanism or a partial sensing mechanism.

However, all or part of the resources indicated by the auxiliary information may be located outside the resource selection window of the second terminal device, resulting in insufficient utilization of the auxiliary information, and thus the resources selected by the second terminal device cannot fully take into account the interference of the first terminal device condition, which affects the reliability of data transmission.

That is to say, when the resource selection window corresponding to the auxiliary information is not aligned with the resource selection window of the second terminal device, the reliability of data transmission is affected. Wherein, the misalignment may mean that at least one resource among the resources indicated by the auxiliary information is not in the resource selection window of the second terminal device (or at least one resource among the resources indicated by the auxiliary information is outside the resource selection window of the second terminal device), Or, the resource selection window where the resource indicated by the auxiliary information is located is completely or partially overlapped with the resource selection window of the second terminal device (or the resource selection window where the resource indicated by the auxiliary information is located and the resource selection window of the second terminal device are not completely overlapped. coincide).

In view of this, an embodiment of the present application provides a resource determination method, and the resource determination method of the embodiment of the present application can be applied to a system for communication between terminal devices, such as a V2X communication system and a device to device (device to device, D2D) system. Referring to FIG. 4 , the communication system includes at least two terminal devices 40, and the two terminal devices 40 can communicate directly through a side link. Optionally, referring to FIG. 5 , the communication system further includes a network device 50 . The terminal device 40 can also communicate with the network device 50 (only two terminal devices 40 are shown in Figures 4 and 5).

The terminal device 40 is mainly used for receiving or sending data. Optionally, the terminal device 40 involved in the embodiments of the present application may be a device or a component in the device that implements the function of the terminal device 40. For example, the terminal device 40 includes, for example, but not limited to, various handheld devices with wireless communication functions. , in-vehicle device, wearable device, computing device, or other processing device connected to a wireless modem; may also include subscriber units, cellular phones, smart phones, wireless data cards, personal digital Assistant (personal digital assistant, PDA) computer, tablet computer, handheld device (handheld), laptop computer (laptop computer), machine type communication (machine type communication, MTC) terminal (terminal), user equipment (user equipment, UE), mobile terminal, etc. For another example, the terminal device 40 may be a component in any of the above-mentioned devices (for example, the terminal device 40 may refer to a chip system in any of the above-mentioned devices). The terminal device 40 involved in the embodiments of the present application may also be an on-board module, on-board module, on-board component, on-board chip or on-board unit built into the vehicle as one or more components or units. An on-board module, on-board module, on-board component, on-board chip or on-board unit may implement the method of the present application. In some embodiments of the present application, the terminal device may also be referred to as a terminal, which is described in a unified manner here, and will not be repeated below.

The network device 50 is a device deployed in a radio access network to provide a wireless communication function. Optionally, the network device 50 may refer to a device on the air interface of the access network that communicates with the wireless terminal device 40 through one or more cells, wherein the device implementing the functions of the network device 50 may be the network device 50 or A device (such as a chip in the network device 50 ) that supports the network device 50 to implement this function. Optionally, the network device 50 may perform attribute management on the air interface. The base station equipment may also coordinate attribute management of the air interface. The network device 50 includes various forms of macro base stations, micro base stations (also called small cells), relay devices such as relay stations or chips of relay devices, transmission reception points (TRPs), evolved network nodes ( evolved Node B, eNB), next generation network node (generation Node B, gNB), evolved node (ng evolved Node B, ng-eNB) connected to the next generation core network, etc. Alternatively, in a distributed base station scenario, the network device 50 may be a base band unit (BBU) and a remote radio unit (RRU), and in a cloud radio access network (cloud radio access Netowrk, CRAN) In the scenario, the network device 50 may be a baseband pool (BBU pool) and an RRU.

The communication systems shown in FIG. 4 and FIG. 5 can be applied to current long term evolution (LTE) or advanced long term evolution (LTE advanced, LTE-A) systems, and can also be applied to 5G networks currently being developed Or in other networks in the future, of course, it may also be applied to a system of mixed LTE and 5G networking, or other systems, which are not specifically limited in this embodiment of the present application. Wherein, in different networks, the network device 50 and the terminal device 40 in the above communication system may correspond to different names, and those skilled in the art can understand that the names do not limit the devices themselves.

The communication systems and service scenarios described in the embodiments of the present application are for the purpose of illustrating the technical solutions of the embodiments of the present application more clearly, and do not constitute a limitation on the technical solutions provided by the embodiments of the present application. Those of ordinary skill in the art know that with the evolution of the network architecture and the emergence of new service scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.

The resource determination method provided by the embodiment of the present application will be specifically described below.

It should be noted that the names of messages between network elements or the names of parameters in the messages in the following embodiments of the present application are just an example, and other names may also be used in specific implementations. In this embodiment of the present application, the resources indicated by the auxiliary information may include resources recommended to be used by the first terminal device, and may also include resources recommended not to be used by the first terminal device. Among them, recommendation can also be replaced with tending or expecting. That is, the resources indicated by the auxiliary information may include resources that the first terminal device tends to use, or resources that the first terminal device tends not to use. "Recommended" can also be replaced with "Can be used", and "Not recommended" can also be replaced with "Cannot be used". That is, the resources indicated by the auxiliary information may include resources that can be used by the first terminal device, or resources that cannot be used by the first terminal device. In the embodiments of the present application, the expression "recommended" is used as an example for introduction. The first resource selection window is used for the first terminal device to select resources, and the second resource selection window is used for the second terminal device to select resources. For the implementation process of resource selection, please refer to the relevant description of the full-sensing mechanism or the partial-sensing mechanism. Time domain resource units may include one of the following: slots, symbols, and so on. In this application, a trigger message is used as an example for introduction. In the embodiment of the present application, the interval between A and B refers to a difference value determined based on the indices of the time-domain resource units where A and B are located. For example, in the same time slot, the index of the time slot occupied by A is 1, and the index of the time slot occupied by B is 6, then the interval between A and B is 5 time slots. It should be understood that the interval between A and B can also be equally replaced by the number of time-domain resource units located between A and B, but the difference in value is 1. For example, in the same time slot, the index of the time slot occupied by A is 1, and the index of the time slot occupied by B is 6, then the interval between A and B is 4 time slots. Here, a unified description is provided, and details are not repeated below.

The embodiment of the present application provides a resource determination method 600, and the resource determination method is applied in the data transmission process of the sidelink. Referring to Figure 6, the method includes the following steps:

S601. The second terminal device sends first information to the first terminal device. Correspondingly, the first terminal device receives the first information from the second terminal device.

Wherein, the first information indicates the second time domain resource set.

The introduction of the second time-domain resource set is as follows: the second time-domain resource set includes at least two time-domain resource units, and at least one time-domain resource unit between the two time-domain resource units does not belong to the second time-domain resource gather. That is, the time domain resource units in the second time domain resource set are discontinuous in the time domain. For example, taking the time domain resource unit as a time slot as an example, the second time domain resource set includes time slots with

indices

1, 3, 5, and 7, or the second time domain resource set includes

indices

1, 3, 5, 6 and 7 time slots. Exemplarily, the second time domain resource set is determined based on the second resource selection window, that is, the time domain resource units in the second time domain resource set are located within the second resource selection window.

Among them, the introduction of the first information is as follows:

Exemplarily, the first information indicates the location of the starting time-domain resource unit and the interval from the starting time-domain resource unit. Wherein, the second time domain resource set may include the initial time domain resource unit, or may not include the initial time domain resource unit. Exemplarily, still taking the example that the time domain resource unit is a time slot, the first information may include a bitmap. One bitmap corresponds to one second resource selection window, one bitmap includes at least one bit, and one bit in the bitmap corresponds to one time slot. If a bit takes a value of "1", the time slot corresponding to this bit belongs to the second time domain resource set. Conversely, if a bit takes a value of "0", the time slot corresponding to this bit does not belong to the second time domain resource set. For example, the value of the bitmap is: 01010101, that is, the value of the bit corresponding to the initial time slot is "0", which does not belong to the second time domain resource set, and the time slot corresponding to the bit valued as "1" in the bitmap The indices are 1, 3, 5 and 7. That is, the second time-domain resource set includes time slots with

indices

1, 3, 5, and 7. For another example, the value of the bitmap is: 11010111, that is, the value of the corresponding bit of the initial time slot is “1”, which belongs to the second time domain resource set, and the time slot corresponding to the bit valued as “1” in the bitmap The indices are 0, 1, 3, 5, 6 and 7. That is, the second time-domain resource set includes time slots with indices of 0, 1, 3, 5, 6, and 7.

Exemplarily, the first information further includes at least one of the following:

The first item, indicating information. The indication information indicates that the second terminal device is a partial sensing terminal, that is, the second terminal device uses a partial sensing mechanism to select resources. Exemplarily, the indication information may be a preset number of bits, for example, the indication information is implemented as 1 bit, and when the value of the bit is "1", the indication information indicates that the second terminal device is a partial sensing terminal. In this way, the first terminal device can determine that the time domain resource units in the second time domain resource set are discontinuous in the time domain. On the contrary, when the value of this bit is "0", the indication information indicates that the second terminal device is a fully aware terminal. In this way, the first terminal device can determine that the time domain resource units in the second resource selection window are continuous in the time domain.

The second item is the information of the first business. The first service is a service corresponding to the above service data. For example, the information of the first service includes information such as a period of the first service, a start time slot of the first service, and the like.

The third item is the starting position of the second resource selection window. For example, the first information indicates the starting time slot position of the second resource selection window through a preset number of bits. As a possible implementation manner, the first information indicates N time-domain resource units through a preset number of bits. Wherein, N refers to the number of time-domain resource units in the interval between the start position of the second resource selection window and the time-domain resource resource for sending the first information. Exemplarily, there are 6 time slots between the start position of the second resource selection window and the time slot where the first information is located, so N=6, and the value of the first information indicated by the preset number of bits is 6. The information indicating the position of the initial time slot of the second resource selection window by the first information is determined according to the interval between the initial position of the second resource selection window and the time domain resource unit for sending the first information.

The fourth item is the window length of the second resource selection window. The window length can also be replaced by the window size. For example, when the second terminal device adopts the full perception mode, the window length of the second resource selection window may be characterized by the number of time-domain resource units in the second resource selection window.

The fifth item is the number of time-domain resource units in the second resource selection window. Still taking the time domain resource unit as a time slot as an example, when the value of the bitmap is 01010101, the number of time slots in the second resource selection window is 4. When the value of the bitmap is 11010111, the number of time slots in the second resource selection window is 6.

The sixth item is the period of the second resource selection window.

Exemplarily, the first information may be a trigger message. For details, reference may be made to the related description of FIG. 3 , which will not be repeated here. The trigger message belongs to sidelink control signaling, which can be carried in sidelink control information (SCI)-2, or can be carried in MAC layer signaling. Certainly, the first information may also be implemented as other messages, such as a configuration message of radio resource control (radio resource control, RRC) signaling, which is not limited in this embodiment of the present application.

S602. The first terminal device determines at least one first resource in the second time domain resource set.

Wherein, the number of the first resource may be one, or may be multiple. The time domain resource unit where each first resource in the at least one first resource is located belongs to the second time domain resource set. In the case where the first resource is a resource recommended for use by the first terminal device, the interference degree of the at least one first resource is relatively low compared to the resources in the first resource selection window other than the at least one first resource. . Conversely, in the case where the first resource is a resource that is not recommended for use by the first terminal device, the degree of interference of the at least one first resource relative to the resources other than the at least one first resource in the first resource selection window Relatively high.

Wherein, when the first terminal device selects resources, it can adopt a full sensing mode or a partial sensing mode. For details, please refer to the introduction of the following two examples:

Example 1: The first terminal device uses the full perception mode to select resources. Exemplarily, the specific implementation process of S602 is as follows: First, the first terminal device performs resource detection to determine a perception result 1 . The object of resource detection includes at least one of the following: resources in the second time-domain resource set, and resources within a preset duration before the second time-domain resource set. Then, based on the sensing result 1, the first terminal device determines at least one first resource from the second time domain resource set. The process of determining the perception result 1 and the process of determining at least one first resource according to the perception result 1 can be referred to the relevant introduction of the full perception mechanism, which will not be repeated here.

Example 2: The first terminal device uses the partial sensing mode to select resources. For details, please refer to the introduction of the following three methods:

Mode 1, referring to Fig. 7a, the specific implementation process of S602 includes S602a and S602b:

S602a: The first terminal device determines candidate resource 1 in the second time domain resource set.

The number of candidate resources 1 may be one or multiple. Moreover, the time domain resource unit where the candidate resource 1 is located belongs to the first time domain resource set, and the first time domain resource set is determined based on the first resource selection window.

Exemplarily, the first terminal device regards the time-domain resource unit as a resource that belongs to both the first time-domain resource set and the second time-domain resource set as candidate resource 1 . In other words, candidate resource 1 is within both the first resource selection window and the second resource selection window.

S602b, the first terminal device determines the second resource in candidate resource 1.

Wherein, the number of the second resource may be one, or may be multiple. The second resource belongs to at least one first resource.

Exemplarily, the first terminal device determines the second resource according to the candidate resource 1 and the preset ratio 1. For example, the first terminal device selects a certain number of resources from the candidate resource 1 according to the preset ratio 1 as the second resource. . Alternatively, the first terminal device performs resource detection on candidate resource 1 and/or resources before candidate resource 1 to determine perception result 2. The first terminal device determines the second resource according to the sensing result 2 . Wherein, the sensing result 2 indicates the RSRP measurement value of each resource in the candidate resource 1. For the process of determining the sensing result 2, and the process of determining the second resource according to the sensing result 2, reference may be made to the relevant descriptions of some sensing mechanisms, which will not be repeated here.

It should be understood that the following situations may be included between the first resource selection window and the second resource selection window:

In the first case, the first resource selection window and the second resource selection window completely overlap. That is to say, the window size, start time, and end time of the first resource selection window and the second resource selection window are the same.

In the second case, the window sizes of the first resource selection window and the second resource selection window are different, and the first resource selection window is located within the second resource selection window.

In the third case, the first resource selection window and the second resource selection window have different window sizes, and the second resource selection window is located within the first resource selection window.

In the fourth case, the first resource selection window partially overlaps with the second resource selection window. The window sizes of the first resource selection window and the second resource selection window may be the same or different.

In the fifth case, there is no overlap between the first resource selection window and the second resource selection window. The window sizes of the first resource selection window and the second resource selection window may be the same or different.

It should be noted that mode 1 is an optional mode. For example, when the first resource selection window and the second resource selection window satisfy the above-mentioned first to fourth cases, the first terminal device may determine the first resource by adopting method 1, or may not use method 1 to determine the first resource, This embodiment of the present application does not limit this. When the first resource selection window and the second resource selection window satisfy the fifth situation above, if there is no intersection between the first resource selection window and the second resource selection window, the first terminal device does not use the method 1 to determine the first resource, and can Mode 2 is used to determine the first resource.

Mode 2, see Fig. 7b, the specific implementation process of S602 includes S602c and S602d:

S602c: The first terminal device determines candidate resource 2 in the second time domain resource set.

The number of candidate resources 2 may be one or multiple. Moreover, the time domain resource unit where the candidate resource 2 is located does not belong to the first time domain resource set.

Exemplarily, the first terminal device uses the time domain resource unit that does not belong to the first time domain resource set, but belongs to the second time domain resource set, as the candidate resource 2 . In other words, candidate resource 2 is outside the first resource selection window, but within the second resource selection window.

S602d, the first terminal device determines a third resource in candidate resource 2.

Wherein, the quantity of the third resource may be one, or may be multiple. The third resource belongs to at least one first resource.

Exemplarily, as a first possible implementation manner, the specific implementation process of S602d includes: the first terminal device performs resource detection to obtain the perception result 3 of the candidate resource 2 . The object of resource detection includes at least one of the following: candidate resource 2, and resources within a period of time before candidate resource 2. For the process of determining the perception result 3, reference may be made to the introduction of some perception mechanisms, which will not be repeated here. Wherein, the sensing result 3 indicates the RSRP measurement value of each resource in the candidate resource 2. Then, the first terminal device determines the third resource according to the sensing result 3 . For example, the first terminal device uses the resource that meets the preset condition as the third resource. The preset condition may be: the RSRP measurement value of the third resource is less than or equal to the reference signal received power threshold value.

Exemplarily, as a second possible implementation manner, the specific implementation process of S602d includes: the first terminal device determines the third resource according to the candidate resource 2 and the preset ratio 2 . For example, the first terminal device selects a certain number of resources from the candidate resources 2 according to the preset ratio 2 to be used as the third resources.

That is to say, the first terminal device determines the first resource (ie, the third resource in S602d) from the resources within the second resource selection window but outside the first resource selection window, so that the first resource is within the second resource selection window so that the first resource can assist the second terminal device in resource selection.

It should be noted that Mode 2 is an optional mode. For example, the first resource selection window and the second resource selection window satisfy the above-mentioned first situation (that is, the first resource selection window and the second resource selection window completely overlap), In the third case (that is, the window sizes of the first resource selection window and the second resource selection window are different, and the second resource selection window is located in the first resource selection window), there is no window outside the first resource selection window, but is located in the first resource selection window. 2. Resources in the resource selection window. Therefore, the first terminal device does not use Mode 2 to determine the first resource. The second situation above is satisfied in the first resource selection window and the second resource selection window (that is, the window sizes of the first resource selection window and the second resource selection window are different, and the first resource selection window is located in the second resource selection window) , in the fourth case (that is, the first resource selection window and the second resource selection window partially overlap) or the fifth case (the first resource selection window and the second resource selection window do not have an intersection), there is a Resources outside the resource selection window, but within the second resource selection window. The first terminal device may determine the first resource by using Mode 2, or may not determine the first resource by using Mode 2, which is not limited in this embodiment of the present application.

Mode 3, the specific implementation process of S602 includes S602a, S602b, S602c and S602d. Wherein, S602c is specifically implemented as: when the resource amount of the second resource is less than the threshold value 1, the first terminal device determines the candidate resource 2 in the second time domain resource set. The threshold value 1 may be a preconfigured value. That is to say, the first terminal device preferentially executes S602a and S602b, and then executes S602c and S602d, that is, the first terminal device preferentially determines the second resource, and the first terminal device determines the second resource only when the resource amount of the second resource is insufficient. Three resources. Since the second resource is both within the first resource selection window and within the second resource selection window, the second resource is the most preferred resource, which is conducive to ensuring data transmission reliability.

It should be noted that, in mode 3, if the first terminal device determines the third resource according to the preset ratio 2 when performing S602d, the value of the preset ratio 2 is related to the resource amount of the second resource, that is, the preset ratio 2 is related to the resource amount of the second resource. The ratio 2 is determined based on the resource amount of the second resource. For example, when the difference between the resource amount of the second resource and the threshold value 1 is larger, the value of the preset ratio 2 is larger to increase the resource amount of the third resource, thereby ensuring that the resource amount of the first resource reaches the threshold value 1 . Conversely, when the difference between the resource amount of the second resource and the threshold value 1 is smaller, the value of the preset ratio 2 is smaller, so as to reduce the resource amount of the third resource, so that the resource amount of the first resource does not exceed the threshold value 1.

S603. The first terminal device sends the second information to the second terminal device. Correspondingly, the second terminal device receives the second information from the first terminal device.

Wherein, the second information indicates at least one first resource.

Exemplarily, the second information may be auxiliary information, and for details, reference may be made to the relevant description of FIG. 3 , which will not be repeated here. The auxiliary information belongs to the sideline control signaling, which can be carried in the SCI-2 or in the MAC layer signaling. Certainly, the second information may also be implemented as other messages, such as feedback information carried by the auxiliary information on a physical layer sidelink feedback channel (PSFCH), which is not limited in this embodiment of the present application.

S604. The second terminal device determines the target resource according to the at least one first resource.

The target resource is used to transmit service data to other terminal devices (eg, the first terminal device). Exemplarily, the service corresponding to the service data is the above-mentioned first service.

Exemplarily, the second terminal device performs resource selection according to the sensing result of the resources in the second resource selection window and the at least one first resource to determine the target resource. For example, in the case where the first resource is a resource recommended for use by the first terminal device, the target resource may include one or more of the above-mentioned at least one first resource. Conversely, in the case that the first resource is a resource recommended not to be used by the first terminal device, the target resource does not include any one of the above at least one first resource.

In the resource determination method 600 provided in this embodiment of the present application, the second terminal device sends the first information to the first terminal device, so that the first terminal device is more targeted when determining the first resource, that is, at least one first resource The time domain resource unit in which each first resource is located belongs to the second time domain resource set. Since the second time-domain resource set is a set of time-domain resource units known to the second terminal device, the second terminal device determines, on the known time-domain resource units, the target resource according to at least one first resource, that is, The second terminal equipment makes full use of the second information when performing resource selection, so as to take into account the interference status of the first terminal equipment, thereby ensuring the reliability of data transmission.

The embodiment of the present application provides a resource determination method 800, and the resource determination method is applied in the data transmission process of the sidelink. Referring to Figure 8a, the method includes the following steps:

S801. The second terminal device sends a trigger message to the first terminal device. Correspondingly, the first terminal device receives the trigger message from the second terminal device.

Exemplarily, for the implementation process of S801, reference may be made to the relevant description of FIG. 3, which will not be repeated here.

It should be noted that S801 is an optional step. For example, after the first terminal device establishes a communication connection with the second terminal device, and the second terminal device sends service data to the first terminal device for the first time, S801 is performed. The second terminal device executes S802 in response to the trigger message. For another example, after the first terminal device sends the message X to the second terminal device, the first terminal device waits for feedback information from the second terminal device, such as a hybrid automatic repeat request (HARQ) message, to learn the message. The reception status of X. That is to say, when the first terminal device has learned that it is to receive information from the second terminal device, the first terminal device executes S802.

Exemplarily, the trigger message in S801 belongs to sideline control signaling, which may be carried in SCI-2 or in MAC layer signaling. Certainly, the trigger message may also be replaced with other messages, such as a configuration message of RRC signaling, which is not limited in this embodiment of the present application.

S802. The first terminal device determines at least one first resource in the first resource selection window.

Wherein, the number of the first resource may be one, or may be multiple. In the case where the first resource is a resource recommended for use by the first terminal device, the interference degree of the at least one first resource is relatively low compared to the resources in the first resource selection window other than the at least one first resource. . Conversely, in the case where the first resource is a resource that is not recommended for use by the first terminal device, the degree of interference of the at least one first resource relative to the resources other than the at least one first resource in the first resource selection window Relatively high. The time domain resource unit where each first resource in the at least one first resource is located belongs to the first time domain resource set.

The introduction of the first time domain resource set is as follows:

Exemplarily, the first time domain resource set is determined based on the first resource selection window, that is, the time domain resource units in the first time domain resource set are located within the first resource selection window. Below, two cases are explained:

As a first case, the first time domain resource set includes at least two time domain resource units, and at least one time domain resource unit between the two time domain resource units does not belong to the first time domain resource set. That is, the time domain resource units in the first time domain resource set are discontinuous in the time domain. Exemplarily, when the first terminal device executes S802, the partial sensing mode is adopted. For example, taking the time domain resource unit as a time slot as an example, when the value of the bitmap is: 01010101, the first time domain resource set includes time slots with

indices

1, 3, 5 and 7. The number of time slots in the first resource selection window is 4, and the window size of the first resource selection window is 4 time slots. For another example, when the value of the bitmap is: 11010111, the first time domain resource set includes time slots with indices of 0, 1, 3, 5, 6 and 7. The number of time slots in the first resource selection window is 6, and the window size of the first resource selection window is 6 time slots. As the second case, the time-domain resource units in the first time-domain resource set are continuous in the time domain, that is, the first time-domain resource set includes at least two time-domain resource units, and the above two time-domain resource units The time-domain resource units in between also belong to the first time-domain resource set. Exemplarily, when the first terminal device performs S802, a full sensing mode or a partial sensing mode may be used. For example, taking the time domain resource unit as a time slot as an example, when the value of the bitmap is: 01111111, the first time domain resource set includes time slots with indexes 1 to 7. The number of time slots in the first resource selection window is 7, and the window size of the first resource selection window is 7 time slots. In the second case, the first time-domain resource set may be determined based on the starting position of the first resource selection window and the window length of the first resource selection window. Exemplarily, there are 5 time slots between the starting position of the first resource selection window and the time slot where the second information is located, and the window length of the first resource selection window is 10 time slots, then the first time domain resource set includes: : a time slot between 5 and 14 between the time slot and the time slot where the second information is located.

It should be noted that in the partial sensing mode, the time-domain resource units in the first time-domain resource set may be continuous or discontinuous in the time domain. For details, please refer to the introduction of the above two cases.

Exemplarily, for the implementation process of S802, reference may be made to the relevant description of FIG. 3 , which will not be repeated here.

S803. The first terminal device sends the second information to the second terminal device. Correspondingly, the second terminal device receives the second information from the first terminal device.

Wherein, the second information indicates at least one first resource and a first time domain resource set.

Among them, the introduction of the second information is as follows:

Exemplarily, the second information includes information of the first resource selection window. Wherein, the information of the first resource selection window includes at least one of the following:

The first item, the starting position of the first resource selection window. For example, the second information indicates the starting time slot position of the first resource selection window through a preset number of bits. As a possible implementation manner, the second information indicates N time-domain resource units through a preset number of bits. Wherein, N refers to the number of time-domain resource units in the interval between the start position of the first resource selection window and the time-domain resource resource for sending the second information. Exemplarily, there are 6 time slots between the start position of the first resource selection window and the time slot where the second information is located, then N=6, and the value of the second information indicated by the preset number of bits is 6. The information indicating the position of the initial time slot of the first resource selection window by the second information is determined according to the interval between the initial position of the first resource selection window and the time domain resource unit for sending the second information.

The second item is the window length of the first resource selection window. The window length can also be replaced by the window size. For example, when the first terminal device adopts the full perception mode, the window length of the first resource selection window may be characterized by the number of time-domain resource units in the first resource selection window.

The third item is the number of time-domain resource units in the first resource selection window. Still taking the time domain resource unit as a time slot as an example, when the value of the bitmap is 01010101, the number of time slots in the first resource selection window is 4. When the value of the bitmap is 11010111, the number of time slots in the first resource selection window is 6.

The fourth item, the specific location of the time domain resource unit in the first resource selection window. Exemplarily, the second information indicates the position of the starting time-domain resource unit and the interval from the starting time-domain resource unit. Wherein, the first time domain resource set may include the initial time domain resource unit, or may not include the initial time domain resource unit. Still taking the example that the time domain resource unit is a time slot, the second information may be a bitmap. One bitmap corresponds to one first resource selection window, one bitmap includes at least one bit, and one bit in the bitmap corresponds to one time slot. When a bit takes a value of "1", the time slot corresponding to this bit belongs to the first time domain resource set. Conversely, if a bit takes a value of "0", the time slot corresponding to this bit does not belong to the first time domain resource set. For example, the value of the bitmap is: 01010101, that is, the value of the bit corresponding to the initial time slot is "0", which does not belong to the first time domain resource set, and the time slot corresponding to the bit valued as "1" in the bitmap The indices are 1, 3, 5 and 7. That is, the first time domain resource set includes time slots with

indices

1, 3, 5, and 7. For another example, the value of the bitmap is: 11010111, that is, the value of the corresponding bit of the initial time slot is "1", which belongs to the first time domain resource set, and the time slot corresponding to the bit whose value is "1" in the bitmap The indices are 0, 1, 3, 5, 6 and 7. That is, the first time-domain resource set includes time slots with indices of 0, 1, 3, 5, 6, and 7. For another example, the value of the bitmap is: 01111111, that is, the value of the bit corresponding to the initial time slot is “0”, which does not belong to the first time domain resource set, and the time corresponding to the bit valued as “1” in the bitmap The slot indices are 1 to 7. That is, the first time domain resource set includes time slots with indices 1 to 7.

The fifth item, the period of the second resource selection window.

The sixth item, instruction information. The indication information indicates that the first terminal device is a partial sensing terminal, that is, the first terminal device adopts a partial sensing mechanism to select resources. For example, the indication information may be a preset number of bits, for example, the indication information is implemented as 1 bit, and when the value of the bit is "1", the indication information indicates that the first terminal device is a partial sensing terminal. In this way, the second terminal device can determine that the time domain resource units in the first time domain resource set are discontinuous in the time domain. On the contrary, when the value of this bit is "0", the indication information indicates that the first terminal device is a fully aware terminal. In this way, the second terminal device can determine that the time domain resource units in the first resource selection window are continuous in the time domain.

It should be noted that, when the second information includes the above-mentioned first item and the second item, the second information can also indicate the position of the first resource selection window. In other words, the second information further includes location information of the first resource selection window.

Exemplarily, the second information may be auxiliary information, and for details, reference may be made to the relevant description of FIG. 3 , which will not be repeated here. The auxiliary information belongs to the sideline control signaling, which can be carried in the SCI-2 or in the MAC layer signaling. Certainly, the second information may also be implemented as other messages, such as feedback information of the PSFCH, which is not limited in this embodiment of the present application.

S804. The second terminal device determines the target resource according to the at least one first resource and the first time domain resource set.

Exemplarily, the second terminal device may determine the following three types of resources based on the at least one first resource and the first set of time domain resources:

The first type of resources, the resources recommended for use by the first terminal device, are denoted as set A1. For example, when the first resource is a resource recommended for use by the first terminal device, the set A1 is the set of the first resources. For another example, in the case where the first resource is a resource that is not recommended for use by the first terminal device, the set A1 is the complement of the first resource in the first time domain resource set, that is, in the first resource selection window In the set A1, resources other than the first resource belong to the set A1, in other words, the time domain resource unit where each resource in the set A1 is located belongs to the first time domain resource set, but is different from the time domain resource unit where the first resource is located. As shown in Fig. 8b, Fig. 8b shows the distribution of the first type of resources in the first resource selection window.

The second type of resources, the resources recommended not to be used by the first terminal device, are recorded as set A2. For example, in the case that the first resource is a resource recommended not to be used by the first terminal device, the set A2 is the set of the first resources. For another example, when the first resource is a resource recommended by the first terminal device, the set A2 is the complement of the first resource in the first time domain resource set, that is, within the first resource selection window. , the resources except the first resource belong to the set A2, in other words, the time domain resource unit where each resource in the set A2 is located belongs to the first time domain resource set, but is different from the time domain resource unit where the first resource is located. As shown in Fig. 8b, Fig. 8b shows the distribution of the second type of resources in the first resource selection window. It can be seen from Fig. 8b that there are two types of resources in the first resource selection window, namely the above-mentioned first type of resources and second type of resources.

The third type of resources, the resources for which the first terminal device does not indicate whether to recommend to use or not, are denoted as set A3. That is to say, the resources outside the first resource selection window all belong to the resources without recommendation information, that is, the resources outside the first resource selection window all belong to the set A3. In other words, the time domain resource unit where the resources in the set A3 are located does not belong to the first time domain resource set. As shown in Fig. 8b, Fig. 8b shows the distribution of the third type of resources outside the first resource selection window. It can be seen from FIG. 8b that the resources outside the first resource selection window are the above-mentioned third type of resources.

Below, two examples are used to introduce the processing process of the above three types of resources by the second terminal device, that is, the implementation process of S804 includes:

Example 1, referring to FIG. 9a, the implementation process of S804 includes S8041 to S8043:

S8041 , the second terminal device performs resource detection to obtain a perception result 1 .

Exemplarily, the object of resource detection in S8041 includes at least one of the following: resources in the second resource selection window, and resources within a period of time before the second resource selection window. The second terminal device performs RSRP measurement to obtain sensing result 1.

S8042. The second terminal device selects resources from the resources in the second resource selection window according to the sensing result 1, so as to obtain a second set of time-frequency resources.

Exemplarily, according to the sensing result 1, the second terminal device selects X% resources from the resources in the second resource selection window as the second time-frequency resource set. The second time-frequency resource set may be recorded as set B. The value of X% can be one of the following: 20%, 30%, 50%, or 100%. Referring to Fig. 9b, (2) in Fig. 9b shows the distribution of the resources in the set B within the second resource selection window.

S8043. The second terminal device determines the target resource according to the at least one first resource, the first time-domain resource set, and the second time-frequency resource set. Exemplarily, the implementation process of S8043 is introduced through the following three steps:

In step a, the second terminal device uses the resources belonging to the first type of resources and the second set of time-frequency resources as the second resources. That is, the second resource is determined based on at least one first resource and belongs to the second time-frequency resource set. Exemplarily, in the case that the set A1 and the set B have an intersection, the second resource belongs to the resource of the intersection of the set A1 and the set B. Referring to Fig. 9b, (3) in Fig. 9b shows the distribution of the second resource. Wherein, the filling pattern in the "rectangular box representing the second resource" is consistent with the filling pattern in the "rectangular box representing the resource in the set A1", to reflect that the second resource is selected from the set A1. In addition, the "rectangular box representing the second resource" and the "rectangular box representing the resource in set B" are both bold lines to indicate that the second resource is selected from set B. The resources of the set A1 can be referred to (1) in FIG. 9b. In this way, the second resource is not only recommended for use by the first terminal device, but also a resource recommended for use by the second terminal device. Alignment issue.

In step b, the second terminal device uses the resources that belong to the above-mentioned first type of resources but do not belong to the second time-frequency resource set as the third resources. That is, the third resource is determined based on at least one first resource and does not belong to the second time-frequency resource set. Exemplarily, in the case that there are resources in the set A1 that do not belong to the set B, the third resource belongs to the resources other than the set B in the set A1. Or, the third resource is a resource selected from the resources in the set A1 except the set B according to the preset ratio 1. Exemplarily, there are 30 resources in the set A1 except the set B, the preset ratio 1 is 20%, the third resource is the selected resource, and the number of the third resource is 6. Referring to Fig. 9b, (3) in Fig. 9b shows the distribution of the third resource. Wherein, the filling pattern in the "rectangular box representing the third resource" is consistent with the filling pattern in the "rectangular box representing the resource in the set A1", to reflect that the third resource is selected from the set A1. Moreover, the position of the "rectangular box representing the third resource" is different from the position of the "rectangular box representing any resource in the set B", to show that the third resource is not selected from the set B. In this way, the third resource is a resource recommended by the first terminal device but not recommended by the second terminal device, which ensures the reliability of data transmission to a certain extent.

In step c, the second terminal device uses the resources that belong to the second time-frequency resource set but do not belong to the first time-frequency resource set as the fourth resource. Exemplarily, in the case that there are resources in the set B that do not belong to the sets A1 and A2, the fourth resource belongs to the resources in the set B other than the sets A1 and A2. Or, the fourth resource is a resource selected from the resources in the set B except the set A1 and the set A2 according to the preset ratio 2. Exemplarily, there are 40 resources in set B except set A1 and set A2, the preset ratio 2 is 30%, the fourth resource is a filtered resource, and the number of fourth resources is 12. Referring to Fig. 9b, (3) in Fig. 9b shows the distribution of the fourth resource. Wherein, the filling pattern in the "rectangular box representing the fourth resource" is consistent with the filling pattern in the "rectangular box representing the resource in the set A3", to reflect that the fourth resource is selected from the set A3. In addition, the "rectangular box representing the fourth resource" and the "rectangular box representing some resources in the set B" are both bold lines to indicate that the fourth resource is selected from the set B. The resources of the set A3 may refer to (1) in Fig. 9b. In this way, the fourth resource is recommended for use by the second terminal device, but the first terminal device does not indicate whether the resource is recommended for use (that is, a resource without recommendation information), which ensures the reliability of data transmission to a certain extent.

Exemplarily, S804 is implemented as at least one of step a, step b, and step c. For example, when the second terminal device performs step a, the target resource includes the second resource. When the second terminal device performs step a and step b, the target resource includes the second resource and the third resource. When the second terminal device performs step a, step b and step c, the target resource includes the second resource, the third resource and the fourth resource.

It should be understood that the second resource is the most preferred resource, that is, the resource recommended by both the first terminal device and the second terminal device. The second terminal device also determines the resource amount of the second resource. When the resource amount of the second resource is lower than the threshold value 1, the second terminal device performs at least one of step b and step c in addition to step a. That is, the target resource includes the second resource, and the resource amount of the second resource is lower than the threshold 1. In the case where the second terminal device also performs step b, the target resource further includes a third resource. In the case that the second terminal device also performs step c, the target resource further includes a fourth resource. Wherein, the threshold value 1 may be X% in S8042.

Example 2, referring to Fig. 9c, the implementation process of S804 includes S8044 and S8045:

S8044. The second terminal device compares the first type of resources and the third type of resources with the second resource selection window respectively to obtain a comparison result.

Exemplarily, the second terminal device denote the resources of the first type of resources in the second resource selection window as the set A1in, the resources of the first type of resources outside the second resource selection window as the set A1out, and set the The resources of the third type of resources in the second resource selection window are denoted as set A3in, and the resources of the third type of resources outside the second resource selection window are denoted as set A3out. As shown in (1) in FIG. 9d, (1) in FIG. 9d shows the distribution of resources in the set A1in, the set A1out, the set A3in, and the set A3out.

S8045. The second terminal device determines the target resource according to the comparison result. Exemplarily, the implementation process of S8045 is introduced through the following three steps:

Step d, the second terminal device performs resource detection to obtain a perception result 2 . Wherein, the object of resource detection in step d includes at least one of the following: resources in the set A1in, and resources within a period of time before the set A1in. Then, according to the sensing result 2, the second terminal device uses the resources in the set A1in that meet the preset conditions as the fifth resources. The preset condition may be: the RSRP measurement value is less than or equal to the reference signal received power threshold value. That is to say, the fifth resource is a resource within the second resource selection window, determined based on at least one first resource, and satisfying a preset condition. In other words, the fifth resource is a resource selected from the set A1in according to a preset condition. As shown in (2) in FIG. 9d, (2) in FIG. 9d shows the distribution status of the fifth resource. Among them, there are two "rectangular boxes representing the fifth resource", and the filling images of the two rectangular boxes are consistent with the filling pattern of the "rectangular box representing the resources in the set A1in", to reflect that the fifth resource is selected from the set A1in. In this way, the fifth resource is not only recommended for use by the first terminal device, but also a resource recommended for use by the second terminal device. Alignment issues.

Step e, the second terminal device performs resource detection to obtain a perception result 3 . Wherein, the object of resource detection in step e includes at least one of the following: the resources in the set A3in, and the resources within a period of time before the set A3in. Then, according to the sensing result 3, the second terminal device uses the resources in the set A3in that meet the preset conditions as the sixth resource. For the description of the preset conditions, reference may be made to the introduction of step d, which will not be repeated here. That is, the sixth resource is the resource in the second resource selection window. The time domain resource unit where the sixth resource is located does not belong to the first time domain resource set and is a resource that satisfies a preset condition. In other words, the sixth resource is a resource selected from the set A3in according to a preset condition. As shown in (2) in FIG. 9d, (2) in FIG. 9d shows the distribution status of the sixth resource. Among them, there are two "rectangular boxes representing the sixth resource", and the filling patterns of the two rectangular boxes are consistent with the filling pattern of the "rectangular box representing the resources in the set A3in", so as to reflect that the sixth resource is selected from the set A3in. In this way, the sixth resource is recommended to be used by the second terminal device, but the first terminal device does not indicate whether the resource is recommended to be used (ie, belongs to the resource without recommended information), which ensures the reliability of data transmission to a certain extent.

Step f, the second terminal device determines the seventh resource from the set A1out. That is, the seventh resource is a resource determined based on the at least one first resource. As shown in (2) in FIG. 9d, (2) in FIG. 9d shows the distribution of the seventh resource. Among them, there is one "rectangular box representing the seventh resource", and the filling pattern is consistent with the filling pattern of the "rectangular box representing the resource in the set A1out", to reflect that the seventh resource is selected from the set A1out. Exemplarily, the second terminal device selects a certain resource from the set A1out according to a preset ratio value of 3, as the seventh resource. Alternatively, the second terminal device selects a certain resource from the set A1out according to the resource amount difference and the ratio value 4, as the seventh resource. The resource amount difference is the difference between the fifth resource and the target resource in resource amount. Since the time domain resource unit where the resources in the set A1out are located does not belong to the second time domain resource set, and the seventh resource is a resource selected from the set A1out, the seventh resource is recommended by the first terminal device, but the second terminal device It is recommended not to use resources, which ensures the reliability of data transmission to a certain extent.

Exemplarily, S804 is implemented as at least one of step d, step e and step f. For example, when the second terminal device performs step d, the target resource includes the fifth resource. When the second terminal device performs steps d and e, the target resources include fifth resources and sixth resources. When the second terminal device performs step d, step e and step f, the target resource includes the fifth resource, the sixth resource and the seventh resource.

It should be understood that the fifth resource is the most preferred resource, that is, the resource recommended by both the first terminal device and the second terminal device.

Further, the second terminal device also determines the resource amount of the fifth resource. In the case that the resource amount of the fifth resource is lower than the threshold 2, the second terminal device performs at least one of step e and step f. That is, the target resource includes the fifth resource, and the resource amount of the fifth resource is lower than the threshold 2 . In the case that the second terminal device also performs step e, the target resource further includes a sixth resource. In the case where the second terminal device also performs step f, the target resource further includes a seventh resource. Wherein, the threshold 2 may be X% in S8042.

That is to say, the second terminal device preferentially selects the resources that satisfy the preset condition from the set A1in, that is, determines the fifth resource. When the fifth resource is insufficient, the second terminal device determines at least one of the sixth resource and the seventh resource. Since both the sixth resource and the seventh resource are resources recommended for use by one of the two terminal devices (ie, the first terminal device and the second terminal device), data transmission reliability is guaranteed to a certain extent.

Further, in the case that the second terminal device also performs step e, the second terminal device further determines the resource amount of the fifth resource and the resource amount of the sixth resource. In the case that the sum of the resource amounts of the fifth resource and the sixth resource is lower than the threshold value 3, the second terminal device performs step f. That is, the second terminal device performs step f only when the target resource includes the fifth resource and the sixth resource, and the sum of the resource amounts of the fifth resource and the sixth resource is lower than the threshold 3. Wherein, the threshold 3 may be X% in S8042.

That is to say, the second terminal device preferentially selects the resources satisfying the preset condition from the set A1in and the set A3in, that is, preferentially determines the fifth resource and the sixth resource. The second terminal device determines the seventh resource only when the sum of the resource amounts of the fifth resource and the sixth resource is insufficient. Since both the fifth resource and the sixth resource are resources that the first terminal device does not explicitly indicate to recommend not to use, and the seventh resource is a resource that the first terminal device indicates to recommend not to use, therefore, compared with the seventh resource, The interference degree of the fifth resource and the sixth resource is lower, which is beneficial to ensure the reliability of data transmission.

In the resource determination method 800 provided in the embodiment of the present application, the second terminal device receives the second information from the first terminal device, which is used for reference by the second terminal device when determining the target resource. In addition to indicating at least one first resource, the second information also indicates a first set of time domain resources. Therefore, the first time-domain resource set is also a set of time-domain resource units known to the second terminal device, and the second terminal device determines, on the known time-domain resource units, the target resource according to at least one first resource, that is, the first resource. The second terminal equipment makes full use of the second information when selecting resources, so as to take into account the interference status of the first terminal equipment, so as to ensure the reliability of data transmission.

The embodiment of the present application provides a resource determination method 1000, and the resource determination method is applied in the data transmission process of the sidelink. Referring to Figure 10, the method includes the following steps:

S1001. The second terminal device sends a trigger message to the first terminal device. Correspondingly, the first terminal device receives the trigger message from the second terminal device.

Exemplarily, for the implementation process of S1001, reference may be made to the relevant description of FIG. 3 , which will not be repeated here.

It should be noted that S1001 is an optional step. For details, please refer to the relevant description of S801, which will not be repeated here.

S1002. The first terminal device determines at least one first resource in the first resource selection window.

Exemplarily, for the implementation process of S1002, reference may be made to the introduction of S802, which will not be repeated here.

S1003. The first terminal device sends the second information to the second terminal device. Correspondingly, the second terminal device receives the second information from the first terminal device.

Wherein, the second information indicates at least one first resource. The time domain resource unit where each first resource in the at least one first resource is located belongs to the first time domain resource set.

Exemplarily, the second information may be auxiliary information, and for details, reference may be made to the relevant description of FIG. 3 , which will not be repeated here. Certainly, the second information may also be implemented as other messages, which is not limited in this embodiment of the present application.

S1004. The second terminal device determines a target resource according to at least one first resource.

Exemplarily, taking the above-mentioned at least one first resource located outside the second resource selection window as an example, the target resource determined in S1004 is also located outside the second resource selection window. The set of first resources located outside the second resource selection window may be recorded as set Aout. Below, the implementation process of S1004 is introduced through two examples:

Example 1, when the first resource is the resource recommended by the first terminal device, in the notation of set Aout, A represents the resource recommended by the first terminal device, and out refers to the resource outside the second resource selection window. In the notation of the set Ain, A represents the resources recommended by the first terminal device, and in refers to the resources in the second resource selection window, as shown in (1) in Figure 11a, and (1) in Figure 11a The distribution of resources in the sets Ain and Aout is shown. The implementation process of S1004 includes the following two ways:

Mode 1, see Figure 11b, S1004 is implemented as S1004a:

S1004a, the second terminal device determines a target resource in at least one first resource according to the ratio value 1.

Exemplarily, the second terminal device selects a certain number of resources from at least one first resource according to a ratio value of 1, as the target resource. The value of the ratio value 1 may be less than 1, that is, the second terminal device uses a part of the resources in the at least one first resource as the target resource. Alternatively, the value of the ratio value 1 may also be equal to 1, that is, the second terminal device uses all of the above at least one first resource as the target resource.

Exemplarily, (2) in FIG. 11a shows the distribution of target resources. Among them, there are two "rectangular boxes representing the target resource", and the filling pattern of the two rectangular boxes is consistent with the filling pattern of the "rectangular box representing the resources in the set Aout", to reflect that the target resource is selected from the set Aout.

That is to say, the second terminal device uses part or all of the first resources as the target resources. Since the first resource is a resource recommended for use by the first terminal device, the second terminal device takes into account the interference degree and resource occupation status of the opposite side, and can ensure data transmission reliability.

Mode 2, see Figure 11b, S1004 is implemented as S1004b and S1004c:

S1004b, the second terminal device performs resource detection to obtain a perception result 1 of at least one first resource.

Exemplarily, the object of resource detection in S1004b includes at least one of the following: the above-mentioned at least one first resource, and a resource within a period of time before the above-mentioned at least one first resource. Perception result 1 includes the measured value of the RSRP of the first resource.

S1004c, the second terminal device determines the target resource according to the sensing result 1.

Exemplarily, according to the measured value of the RSRP of the first resource in the sensing result 1 and the reference signal received power threshold value, the second terminal device uses the first resource whose RSRP measured value is lower than the reference signal received power threshold value as the first resource. target resource.

Exemplarily, in the case that the first preset condition is satisfied, the second terminal device executes the foregoing manner 1 or manner 2. Wherein, the first preset condition includes at least one of the following:

In the first item, the resource amount of the second resource is less than the first preset value. The second resource is a resource within the second resource selection window and determined based on at least one first resource. That is to say, the second resource is the resource recommended by the first terminal device in the second resource selection window, which may be recorded as the set Ain. That is, the second terminal device preferentially determines the second resource. In the case that the resource amount of the second resource is less than the first preset value, the current situation is represented as: in the second resource selection window, the resources recommended by the first terminal device are insufficient. . In this case, the second terminal device only executes the above-mentioned way 1 or way 2, that is, outside the second resource selection window, and the resources recommended by the first terminal device (ie, the first resource) are screened for resources, so as to obtain the target resource, In order to make the amount of resources reported to the MAC layer meet the requirements.

In the second item, the resource amount of the third resource is less than the second preset value. The third resource is a resource that satisfies the second preset condition in the second resource. Wherein, the second preset condition may refer to a resource whose RSRP measurement value is less than or equal to a reference signal received power threshold value. That is, the second terminal device performs resource detection to obtain a perception result 2 of the second resource. Then, the second terminal device filters resources from the second resources according to the sensing result 2, and uses the filtered resources as the third resources. That is, the second terminal device preferentially determines the set Ain, and in the case that the amount of resources in the set Ain that is less than or equal to the reference signal received power threshold value is less than the second preset value, the current situation is represented as: within the second resource selection window , the resources that meet the second preset condition among the resources recommended by the first terminal device are insufficient. In this case, the second terminal device only executes the above-mentioned way 1 or way 2, that is, outside the second resource selection window, and the resources recommended by the first terminal device (ie, the first resource) are screened for resources, so as to obtain the target resource, In order to make the amount of resources reported to the MAC layer meet the requirements.

In the third item, the resource amount of the fourth resource is less than the third preset value. The fourth resource belongs to the second resource and belongs to the second time-frequency resource set. The second time-frequency resource set is the resource set determined by the second terminal device based on the resource sensing result of the second resource selection window. For the specific determination process, please refer to The relevant descriptions of S8041 and S8042 in the resource determination method 800 in this embodiment of the present application will not be repeated here. That is, the fourth resource belongs to the resource on the intersection of the first resource selection window and the second resource selection window, that is, the fourth resource is the most preferred resource. In this way, the second terminal device preferentially determines the fourth resource, and only when the resource amount of the fourth resource is less than the third preset value, the second terminal device executes the above-mentioned method 1 or method 2, thereby obtaining the target resource, so as to report The resources of the MAC layer meet the requirements.

It should be noted that, as a possible implementation manner, the second terminal device preferentially determines whether the first preset condition satisfies the third item, that is, the second terminal device preferentially determines whether the resource amount of the fourth resource is less than the third preset value. , so that the resources for reporting the MAC layer are resources supported by both terminal devices (ie, the first terminal device and the second terminal device), which is beneficial to ensure the reliability of data transmission.

In some embodiments, the second information further indicates the resources located in the second resource selection window, namely the set Ain, as shown in (1) in FIG. 11d , and (1) in FIG. 11d shows the resources in the set Ain distribution. Referring to Fig. 11c, the second terminal device further includes at least one of S1005 and S1006.

As a first implementation manner, the second terminal device executes S1005:

S1005. The second terminal device determines a fourth resource in the second resource selection window.

Wherein, the fourth resource is used to transmit service data to other terminal equipment (such as the first terminal equipment), and satisfies the following two items:

The first item, the fourth resource is determined based on the at least one first resource. That is to say, the fourth resource is a resource recommended for use by the first terminal device. Exemplarily, as shown in (3) in FIG. 11d , (3) in FIG. 11d shows the distribution status of the fourth resource. Wherein, the filling pattern in the "rectangular box representing the fourth resource" is consistent with the filling pattern in the "rectangular box representing the resource in the set Ain", to reflect that the fourth resource is selected from the set Ain.

In the second item, the time domain resource unit where the fourth resource is located belongs to the second time-frequency resource set. The second time-frequency resource set is a resource set determined by the second terminal device based on the resource sensing result of the second resource selection window. Exemplarily, as shown in (3) in FIG. 11d , (3) in FIG. 11d shows the distribution status of the fourth resource. Wherein, the "rectangular box representing the fourth resource" and the "rectangular box representing the resources in the second time-frequency resource set" are both bold lines to indicate that the fourth resource is selected from the second time-frequency resource set. Wherein, (2) in FIG. 11d shows the distribution of resources in the second time-frequency resource set.

That is to say, the fourth resource is a resource supported by both terminal devices (ie, the first terminal device and the second terminal device), which is beneficial to ensure the reliability of data transmission.

As a second implementation manner, the second terminal device executes S1006:

S1006. The second terminal device determines a fifth resource in the second resource selection window.

Wherein, the fifth resource is used to transmit service data to the first terminal device and satisfies the following two items:

In the first item, it is determined that the fifth resource does not belong to the above-mentioned at least one first resource. That is to say, the fifth resource is a resource that is not indicated by the first terminal device to be recommended for use. In other words, the fifth resource is not in the set Ain. Exemplarily, the fifth resource may be a resource other than the first resource within the first resource selection window. Alternatively, the fifth resource may also be a resource outside the first resource selection window. Exemplarily, as shown in (3) in FIG. 11d , (3) in FIG. 11d shows the distribution status of the fifth resource. Wherein, the "rectangular frame representing the fifth resource" is outside the first resource selection window, indicating that the fifth resource is not in the set Ain.

In the second item, the time domain resource unit where the fifth resource is located belongs to the second time-frequency resource set. That is to say, the fifth resource is a resource recommended for use by the second terminal device. In other words, the fifth resource is in the X% resource set within the second resource selection window. Exemplarily, as shown in (3) in FIG. 11d , (3) in FIG. 11d shows the distribution status of the fifth resource. Wherein, the "rectangular box representing the fifth resource" and the "rectangular box representing some resources in the second time-frequency resource set" are both bold lines, to indicate that the fifth resource is selected from the second time-frequency resource set.

In this way, the fifth resource is a resource that is not indicated by the first terminal device to be recommended for use, but is recommended to be used by the second terminal device, which ensures the reliability of data transmission to a certain extent.

As a third implementation manner, the second terminal device executes S1005 and S1006. In this case, the implementation process of S1006 includes: when the resource amount of the fourth resource is lower than the threshold, the second terminal device determines the fifth resource within the second resource selection window. For the introduction of the fourth resource, reference may be made to the relevant description of S1005, which will not be repeated here. That is to say, when the resource amount of the fourth resource is insufficient, the second terminal device determines the fifth resource from the resources outside the set Ain and within the second resource selection window, so as to report to the MAC layer resources meet the requirements.

Example 2, in the case where the first resource is a resource recommended not to be used by the first terminal device, in the notation of the set Aout, A represents the resource recommended not to be used by the first terminal device, and out refers to the resource outside the second resource selection window. resource. In the notation of set Ain, A represents the resources recommended not to be used by the first terminal device, and in refers to the resources in the second resource selection window, as shown in (1) in Figure 12a, (1) in Figure 12a The distribution of resources in the sets Ain and Aout is shown. The implementation process of S1004 includes the following two ways:

Mode 1, see Figure 12b, S1004 is implemented as S1004d and S1004e:

S1004d, the second terminal device determines candidate resources.

The candidate resources include resources outside the second resource selection window and other than the at least one first resource.

S1004e, the second terminal device determines the target resource from the candidate resources according to the ratio value 2.

Exemplarily, the second terminal device selects a certain number of resources from the candidate resources according to the ratio value of 2, as the target resources. The value of the ratio value 2 may be less than 1, that is, the second terminal device uses a part of the candidate resources as the target resource. Alternatively, the value of the ratio value 2 may also be equal to 1, that is, the second terminal device uses all the resources in the candidate resources as the target resources.

That is to say, the second terminal device takes part or all of the candidate resources as the target resource. Since the candidate resources are outside the second resource selection window, but do not include the resources recommended for use by the first terminal device, the candidate resources can ensure the reliability of data transmission to a certain extent.

Mode 2, referring to Fig. 12b, S1004 is implemented as S1004d, S1004f and S1004g. Among them, the descriptions of S1004f and S1004g are as follows:

S1004f, the second terminal device performs resource detection to obtain the perception result 2 of the candidate resource.

Exemplarily, the object of resource detection in S1004f includes at least one of the following: candidate resources, resources within a period of time before the candidate resources. Perception result 2 includes a measure of the RSRP of the candidate resource.

S1004g, the second terminal device determines the target resource according to the sensing result 2.

Exemplarily, according to the RSRP measurement value of the candidate resource in the sensing result 2 and the reference signal received power threshold value, the second terminal device uses the candidate resource whose RSRP measurement value is lower than the reference signal received power threshold value as the target resource. .

Exemplarily, (2) in FIG. 12a shows the distribution of target resources. Among them, there are two "rectangular boxes representing the target resource", and the positions of the two rectangular boxes are outside the second resource selection window, and are different from the positions of the "rectangular boxes representing any resource in the set Aout" to reflect the target resource. is not selected from the set Aout, and is outside the second resource selection window.

Exemplarily, the second terminal device executes S1004f and S1004g only when the third preset condition is satisfied. Wherein, the third preset condition includes at least one of the following:

In the first item, the resource amount of the second resource is less than the default value of 4. The second resource does not belong to the at least one first resource, but belongs to the second time-frequency resource set. The second time-frequency resource set is a resource set determined by the second terminal device based on the resource sensing result of the second resource selection window. For the specific determination process, please refer to the relevant descriptions of S8041 and S8042 in the resource determination method 800 in this embodiment of the present application. It is not repeated here. That is, the second resource is not in the set Ain, but is in X% of the resources in the second resource selection window. The second terminal device executes S1004f and S1004g only when the third preset condition satisfies the first item, that is, outside the second resource selection window, and the first terminal device does not indicate whether it is among the recommended resources (ie, candidate resources) Screen resources to obtain target resources, so that the amount of resources reported to the MAC layer meets the requirements.

In the second item, the resource amount of the second time-frequency resource set is less than the preset value of 5. That is to say, within the second resource selection window, the amount of resources whose RSRP measurement value is lower than the reference signal received power threshold value is less than the preset value of 5. In this case, the second terminal device executes S1004f and S1004g, that is, outside the second resource selection window, and the first terminal device does not indicate whether to filter resources among recommended resources (ie, the first resource), so as to obtain the target resource, In order to make the amount of resources reported to the MAC layer meet the requirements.

In some embodiments, the second information further indicates the resources located in the second resource selection window, namely the set Ain, as shown in (1) in FIG. 12d , and (1) in FIG. 12d shows the resources in the set Ain distribution. Referring to Fig. 12c, the second terminal device further includes S1007:

S1007. The second terminal device determines the second resource.

Wherein, the second resource is used to transmit service data to the first terminal device, and satisfies the following two items:

In the first item, the second resource does not belong to the at least one first resource. That is to say, the second resource is a resource for which the first terminal device does not indicate whether it is recommended to be used. Exemplarily, as shown in Figure 12d, in (3) in Figure 12d, there is one "rectangular box representing the second resource", and the position is different from that of the "rectangular box representing any resource in the set Ain". , to reflect that the second resource is not selected from the set Ain.

In the second item, the time domain resource unit where the second resource is located belongs to the second time-frequency resource set. Exemplarily, as shown in FIG. 12d , in (3) in FIG. 12d , there is one “rectangular frame representing the second resource”, which is the same as the “rectangular frame representing the resource in the second time-frequency resource set”. Bold lines indicate that the second resource is selected from the second time-frequency resource set. The resources in the second time-frequency resource set are shown in (2) in FIG. 12d.

In this way, the second resource is a resource that the first terminal device does not indicate whether it is recommended to be used, but is recommended to be used by the second terminal device, which ensures the reliability of data transmission to a certain extent.

In the resource determination method 1000 provided by this embodiment of the present application, after the second terminal device receives the second information from the first terminal device, even if the second information indicates the first resource located outside the second resource selection window, the second The terminal device can also determine the target resource in combination with the first resource indicated by the second information, and use the target resource outside the second resource selection window to transmit service data. Since the second terminal device makes full use of the second information when selecting resources, the interference status of the first terminal device is taken into consideration, thereby ensuring the reliability of data transmission.

The foregoing mainly introduces the solutions provided by the embodiments of the present application from the perspective of interaction between various network elements. Correspondingly, an embodiment of the present application further provides a communication device, and the communication device may be a network element in the foregoing method embodiments, or a device including the foregoing network element, or a component usable for a network element. It can be understood that, in order to realize the above-mentioned functions, the communication apparatus includes corresponding hardware structures and/or software modules for executing each function. Those skilled in the art should easily realize that the present application can be implemented in hardware or a combination of hardware and computer software with the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein. Whether a function is performed by hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Skilled artisans may implement the described functionality using different methods for each particular application, but such implementations should not be considered beyond the scope of this application.

Exemplarily, FIG. 13 shows a schematic structural diagram of a communication apparatus 1300 . The communication device 1300 includes a processing unit 1301 , a sending unit 1302 and a receiving unit 1303 .

In a possible example, taking the communication apparatus 1300 as the second terminal device as an example, the processing unit 1301 is configured to support the second terminal device to perform S604 in FIG. 6 , S804 in FIG. 8a , S1004 in FIG. 10 , and/ Or other processing operations that need to be performed by the second terminal device in this embodiment of the present application. The sending unit 1302 is configured to support the second terminal device to perform S601 in FIG. 6 , S801 in FIG. 8a , S1001 in FIG. 10 , and/or other sending operations that the second terminal device needs to perform in this embodiment of the present application. The receiving unit 1303 is configured to support the second terminal device to perform S603 in FIG. 6 , S803 in FIG. 8a , S1003 in FIG. 10 , and/or other receiving operations that the second terminal device needs to perform in this embodiment of the present application.

In another possible example, taking the communication apparatus 1300 as the first terminal device as an example, the processing unit 1301 is configured to support the first terminal device to perform S602 in FIG. 6 , S802 in FIG. 8a , S1002 in FIG. 10 , and /or other processing operations that need to be performed by the first terminal device in this embodiment of the present application. The receiving unit 1303 is configured to support the first terminal device to perform S601 in FIG. 6 , S801 in FIG. 8a , S1001 in FIG. 10 , and/or other receiving operations that the first terminal device needs to perform in this embodiment of the present application. The sending unit 1302 is configured to support the first terminal device to perform S603 in FIG. 6 , S803 in FIG. 8a , S1003 in FIG. 10 , and/or other sending operations that the first terminal device needs to perform in this embodiment of the present application.

Optionally, the communication device 1300 may further include a storage unit 1304 for storing program codes and data of the communication device, and the data may include but not limited to original data or intermediate data.

The processing unit 1301 may be a processor or a controller, such as a CPU, a general-purpose processor, an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other Programmable logic devices, transistor logic devices, hardware components, or any combination thereof. It may implement or execute the various exemplary logical blocks, modules and circuits described in connection with this disclosure. A processor may also be a combination that implements computing functions, such as a combination of one or more microprocessors, a combination of a DSP and a microprocessor, and the like.

The sending unit 1302 may be a communication interface, a sending or sending circuit, etc., where the communication interface is a general term, and in a specific implementation, the communication interface may include multiple interfaces, for example, may include: an interface between terminal devices and/or other interface.

The receiving unit 1303 may be a communication interface, a receiver or a receiving circuit, etc., where the communication interface is a general term, and in a specific implementation, the communication interface may include multiple interfaces, for example, may include: an interface between terminal devices and/or other interfaces.

The storage unit 1304 may be a memory.

When the processing unit 1301 is a processor, the sending unit 1302 and the receiving unit 1303 are communication interfaces, and the storage unit 1304 is a memory, the communication device involved in the embodiment of the present application may be as shown in FIG. 14 .

Referring to FIG. 14 , the communication device includes: a processor 1401 , a communication interface 1402 , and a memory 1403 . Optionally, the communication device may further include a bus 1404 . Wherein, the communication interface 1402, the processor 1401 and the memory 1403 can be connected to each other through a bus 1404; the bus 1404 can be a peripheral component interconnect (PCI) bus or an extended industry standard architecture (EISA) bus etc. The bus 1404 can be divided into an address bus, a data bus, a control bus, and the like. For ease of presentation, only one thick line is shown in FIG. 14, but it does not mean that there is only one bus or one type of bus.

Optionally, the embodiment of the present application further provides a computer program product carrying computer instructions, when the computer instructions are executed on the computer, the computer is made to execute the method described in the foregoing embodiments.

Optionally, an embodiment of the present application further provides a computer-readable storage medium, where the computer-readable storage medium stores computer instructions, and when the computer instructions are executed on a computer, the computer executes the methods described in the foregoing embodiments.

Optionally, an embodiment of the present application further provides a chip, including: a processing circuit and a transceiver pin, where the processing circuit and the transceiver pin are used to implement the method introduced in the foregoing embodiment. Wherein, the processing circuit is used for executing the processing actions in the corresponding method, and the transceiver pins are used for executing the actions of receiving/transmitting in the corresponding method.

Those of ordinary skill in the art can understand that: in the above-mentioned embodiments, all or part of them may be implemented by software, hardware, firmware or any combination thereof. When implemented in software, it can 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, all or part of the processes or functions described in the embodiments of the present application are generated. The computer may be a general purpose computer, special purpose computer, computer network, or other programmable device. The computer instructions may be stored in or transmitted from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions may be downloaded from a website site, computer, server or data center Transmission to another website site, computer, server, or data center by wire (eg, coaxial cable, optical fiber, digital subscriber line, DSL) or wireless (eg, infrared, wireless, microwave, etc.). The computer-readable storage medium may be any available medium that a computer can access, or a data storage device such as a server, a data center, or the like that includes an integration of one or more available media. The available media may be magnetic media (eg, floppy disk, hard disk, magnetic tape), optical media (eg, digital video disc (DVD)), or semiconductor media (eg, solid state disk (SSD)) Wait.

In the several embodiments provided in this application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the apparatus embodiments described above are only illustrative. For example, the division of the modules is only a logical function division. In actual implementation, there may be other division methods. For example, multiple modules or components may be combined or Can be integrated into another system, or some features can be ignored, or not implemented. On the other hand, the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or modules, and may be in electrical or other forms.

The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple devices. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution in this embodiment.

From the description of the above embodiments, those skilled in the art can clearly understand that the present application can be implemented by means of software plus necessary general-purpose hardware, and of course hardware can also be used, but in many cases the former is a better implementation manner . Based on this understanding, the technical solutions of the present application can be embodied in the form of software products in essence or contributed parts, and the computer software products are stored in a readable storage medium, such as a floppy disk, a hard disk or an optical disk of a computer etc., including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the various embodiments of the present application.

The above are only specific embodiments of the present application, but the protection scope of the present application is not limited thereto, and changes or substitutions within the technical scope disclosed in the present application should all be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

A method for determining resources, comprising:

The second terminal device receives second information from the first terminal device, wherein the second information indicates at least one first resource and a first set of time domain resources, where each first resource in the at least one first resource is located The time domain resource unit belongs to the first time domain resource set;

The second terminal device determines a target resource according to the at least one first resource and the first set of time domain resources, where the target resource is used for transmitting service data.
The method according to claim 1, wherein the first time domain resource set is determined based on a first resource selection window, and the first resource selection window is used for resource selection by the first terminal device.
The method according to claim 1 or 2, wherein the second information indicates a position of a starting time-domain resource unit and an interval from the starting time-domain resource unit.
The method according to any one of claims 1 to 3, wherein the second information includes at least one of the following: a start position of the first resource selection window, a window of the first resource selection window length, or the number of time-domain resource units in the first resource selection window;

Wherein, the first resource selection window is used for resource selection by the first terminal device.
The method according to any one of claims 1 to 4, wherein the second information includes indication information, wherein the indication information indicates that the first terminal device is a partially aware terminal.
The method according to any one of claims 1 to 5, wherein the target resource includes a second resource; wherein the second resource is determined based on the at least one first resource and belongs to a second time-frequency A resource set, where the second time-frequency resource set is a resource set determined by the second terminal device based on the resource sensing result of the second resource selection window.
The method according to any one of claims 1 to 6, wherein the target resource comprises at least one of the following: a third resource, wherein the third resource is determined based on the at least one first resource, and Does not belong to the second time-frequency resource set, the second time-frequency resource set is the resource set determined by the second terminal device based on the resource sensing result of the second resource selection window;

A fourth resource, wherein the fourth resource belongs to the second time-frequency resource set, and the time-domain resource unit where the fourth resource is located does not belong to the first time-domain resource set.
The method according to claim 7, wherein the third resource is a resource filtered according to a first preset ratio.
The method according to claim 7, wherein the fourth resource is a resource filtered according to a second preset ratio.
The method according to any one of claims 7 to 9, wherein the target resource further comprises a second resource, and the resource amount of the second resource is lower than a first threshold;

The second resource is determined based on the at least one first resource and belongs to the second time-frequency resource set.
The method according to any one of claims 1 to 5, wherein the target resource comprises a fifth resource in the second resource selection window;

The second resource selection window is used for resource selection by the second terminal device, and the fifth resource is a resource determined based on the at least one first resource and satisfying a preset condition.
The method according to claim 1, 2, 3, 4, 5 or 10, wherein the target resource comprises at least one of the following:

The sixth resource in the second resource selection window, wherein the second resource selection window is used for the second terminal device to select resources, and the time domain resource unit where the sixth resource is located does not belong to the first time a set of domain resources, and the sixth resource satisfies a preset condition;

The second resource selects a seventh resource outside the window, where the seventh resource is determined based on the at least one first resource.
The method according to claim 12, wherein the resource amount of the seventh resource is determined based on at least one of the following:

Preconfigured scale values;

A resource amount difference between a fifth resource and the target resource, wherein the fifth resource is located within the second resource selection window and is determined based on the at least one first resource and satisfies the predetermined conditioned resources.
The method according to claim 12 or 13, wherein the target resource further includes a fifth resource in the second resource selection window, and the resource amount of the fifth resource is lower than a second threshold;

The fifth resource is a resource determined based on the at least one first resource and satisfying the preset condition.
The method according to any one of claims 12 to 14, wherein the target resource further comprises a fifth resource and the sixth resource in the second resource selection window, the fifth resource and the The sum of the resource amounts of the sixth resource is lower than the third threshold;

The fifth resource is a resource determined based on the at least one first resource and satisfying the preset condition.
The method according to any one of claims 1 to 15, wherein the first resource comprises a resource recommended for use by the first terminal device;

Alternatively, the first resource includes a resource recommended not to be used by the first terminal device.
A method for determining resources, comprising:

The first terminal device determines at least one first resource in the first time domain resource set, wherein the time domain resource unit where each first resource in the at least one first resource is located belongs to the first time domain resource set;

The first terminal device sends second information to the second terminal device, wherein the second information indicates the at least one first resource and the first set of time domain resources.
The method according to claim 17, wherein the first time domain resource set is determined based on a first resource selection window, and the first resource selection window is used for resource selection by the first terminal device.
The method according to claim 17 or 18, wherein the second information indicates a position of a starting time domain resource unit and an interval from the starting time domain resource unit.
The method according to any one of claims 17 to 19, wherein the second information includes at least one of the following: a start position of the first resource selection window, a window of the first resource selection window length, or the number of time-domain resource units in the first resource selection window;

Wherein, the first resource selection window is used for resource selection by the first terminal device.
The method according to any one of claims 17 to 20, wherein the second information includes indication information, wherein the indication information indicates that the first terminal device is a partially aware terminal.
The method according to any one of claims 17 to 21, wherein the first resource comprises a resource recommended for use by the first terminal device;

Alternatively, the first resource includes a resource recommended not to be used by the first terminal device.
A communication device, comprising: a processor, wherein the processor is coupled to a memory, the memory stores instructions, and when the instructions are executed by the processor, the instructions are executed as claimed in claims 1 to 16 or claims The method of any one of claims 17 to 22.
A chip, characterized in that the chip includes a logic circuit and an input-output interface, the input-output interface is used for communicating with modules other than the chip, and the logic circuit is used for running a computer program or instruction to make The communication device performs a method as claimed in any one of claims 1 to 16 or claims 17 to 22.
A computer-readable storage medium, characterized in that the computer-readable storage medium stores a program, and when the program is called by a processor, the method of any one of claims 1 to 16 is executed, or the method of claim 17 is executed. The method of any one of to 22 is performed.
A computer program product comprising instructions, characterized in that, when the computer program product is run on a computer, the computer is made to perform the method of any one of claims 1 to 16, or to perform the method as claimed in claim 17 The method of any one of to 22.