WO2021238822A1

WO2021238822A1 - Perception result processing method and apparatus

Info

Publication number: WO2021238822A1
Application number: PCT/CN2021/095339
Authority: WO
Inventors: 刘云
Original assignee: 华为技术有限公司
Priority date: 2020-05-27
Filing date: 2021-05-21
Publication date: 2021-12-02
Also published as: CN113747463A

Abstract

Embodiments of the present application provide a perception result processing method and apparatus. The method comprises: a first terminal device receives first information from a second terminal device by means of a side link. The first terminal device determines at least one first resource in a selection window on the basis of the first information and determines a third resource according to the at least one first resource. The first terminal device sends second information to a second terminal device, the second information indicating the third resource. The first resource is a resource reserved by the second terminal device, and/or a resource reserved by the third terminal device for sending information to the second terminal information. When the first terminal device informs the second terminal device of a set of resources, the method can effectively screen the first source, and improve the effectiveness of the first resource incorporated into the third resource, thereby ensuring the quality of communication between the first terminal device and the second terminal device.

Description

Method and device for processing perception results

Cross-references to related applications

This application claims the priority of a Chinese patent application filed with the Chinese Patent Office on May 27, 2020, the application number is 202010458919.0, and the application name is "a processing method for perceptual results", the entire content of which is incorporated into this application by reference ; This application requires the priority of a Chinese patent application filed with the Chinese Patent Office, the application number is 202010924156.4, and the application name is "a method and device for processing perception results" on September 4, 2020, the entire content of which is incorporated herein by reference Applying.

Technical field

The embodiments of the present application relate to the field of wireless communication, and in particular, to a method and device for processing perception results.

Background technique

With the evolution of communication technology, the Internet of Everything is also accelerating. In the third generation partnership project (3rd generation partnership project, 3GPP) version 14 (release 14, R14) agreement, vehicle-to-everything (vehicle-to-everything) , V2X) introduces a perception mechanism. Specifically, after determining the time n of the transmission demand, the terminal device determines the sensing window (sensing window) and the selection window (selection window) according to the time n. The terminal device senses the signal strength of the service transmission, and obtains the period of the service, and then can estimate the interference strength of the reserved resource corresponding to the service in the selection window. If the interference intensity is higher than a certain threshold, the resource cannot be used as the subsequent transmission resource of the terminal device. If the interference intensity is lower than a certain threshold, the resource can be used as the subsequent transmission resource of the terminal device.

Unlike R14 V2X, R17 V2X involves enhancements in resource allocation. Exemplarily, user equipment (UE) A (hereinafter referred to as UE-A) notifies UE-B of a set of resources, and UE-B may consider the set of resources notified by UE-A when transmitting, and select among them Resources used for communication with UE-A. The advantage of this is that UE-A fully considers the interference situation near UE-A when sensing the spectrum occupancy. By notifying UE-B of a set of resources, UE-B can choose among the above-mentioned set of resources. The resources used for communication with UE-A help ensure the communication quality between UE-A and UE-B. Therefore, the sensing result of UE-A is not used for UE-A transmission as in R14 V2X, but for UE-B transmission.

Therefore, the sensing purpose of R17 V2X is different from the sensing purpose of R14 V2X. In R14 V2X, the sensing result of UE-A is used for UE-A transmission, while in R17 V2X, the sensing result of UE-A is used for UE. -B used for transmission.

In summary, how UE-A can better screen out a set of resources notified to UE-B based on the sensing result to avoid UE-B from selecting poor resources to communicate with UE-A is a problem worthy of attention.

Summary of the invention

The embodiments of the present application provide a sensing result processing method and device, which are used to implement UE-A to better filter out a set of resources notified to UE-B according to the sensing result.

In the first aspect, an embodiment of the present application provides a sensing result processing method. A first terminal device establishes a sidelink with a second terminal device. The method includes: the first terminal device receives data from The first information on the second terminal device. The first information is used to instruct the first terminal device to notify at least one resource for the second terminal device. The first terminal device determines at least one first resource in a selection window based on the first information, and determines a third resource according to the at least one first resource. The first terminal device sends second information to the second terminal device, the second information indicates the third resource, and the third resource is used by the second terminal device to transmit to the first terminal device . The first resource is a resource reserved by the second terminal device, and/or a resource reserved by the third terminal device for sending information to the second terminal device.

Using the above method, the first terminal device determines at least one first resource, and determines the third resource according to the at least one resource, where the first resource is a resource reserved by the second terminal device, and/or the third terminal device issues a request to the second terminal The resource reserved by the device for sending information. Since the first terminal device notifies the second terminal device of a group of resources, it can effectively screen the first resource, improve the effectiveness of the first resource included in the third resource, and thereby ensure that the first terminal device and the second terminal device The quality of communication.

In a possible design, the third resource does not include any one of the at least one first resource; or, the third resource does not include any resource that occupies the first time slot, and the first resource A time slot is a time slot corresponding to the at least one first resource respectively.

With the above design, since the first resource is not included in the third resource, the second terminal device does not need to adjust the transmission resources with other terminal devices for the transmission with the first terminal device, which can save the processing capacity of the second terminal device and It is possible to reduce resource conflicts caused by the second terminal device's transmission adjustment with the first terminal device and the transmission of other terminal devices.

With the above design, when the first terminal device does not notify the resource occupying the first time slot, if the first resource is the resource reserved by the second terminal device, it can avoid that the second terminal device needs to complete two services in the same time slot , Resulting in insufficient power; if the first resource is the resource reserved by the third terminal device to send information to the second terminal device, it can be avoided that other terminal devices send data to the second terminal device while the second terminal device sends data to the first terminal device. The data sent by the device brings the problem of receiving and sending conflicts to the first terminal device.

In a possible design, the third resource includes some or all of the at least one first resource.

With the above design, since the first terminal device fully considers the particularity of the first resource when notifying the second terminal device of a group of resources, the first resource can be effectively screened and the effectiveness of the first resource included in the third resource can be improved. In this way, the communication quality between the first terminal device and the second terminal device can be ensured.

In a possible design, when determining at least one first resource, the first terminal device receives at least one reservation message, and determines at least one first resource according to each reservation message.

With the above design, the first terminal device can determine at least one first resource by adopting the above design.

In a possible design, the reservation message for reserving the first resource includes a first priority, and the first priority is a priority for reserving transmission with the first resource; and the third resource includes a first priority. A first resource with a priority lower than the priority transmitted by the second terminal device to the first terminal device.

With the above design, the first terminal device can effectively screen the first resource and improve the effectiveness of the first resource included in the third resource.

In a possible design, the third resource includes a non-periodic first resource.

With the above design, since the number of aperiodic first resources is limited, the first terminal device can directly determine that the aperiodic first resource is the third resource.

When the first resource is a periodic resource, if the period of the first resource falls within the preset period range, or the period of the first resource is greater than the preset period, the first terminal device determines the first resource as the third resource resource. Or, when the first resource is a periodic resource, if the period of the first resource is less than the preset period, the first terminal device determines the first resource as the resource in the third resource. Among them, the preset period range or preset period can be stipulated by agreement.

In a possible design, the third resource includes a first resource corresponding to a reservation message whose signal strength is greater than a first threshold in a reservation message for reserving the first resource.

With the above design, the first terminal device can filter out resources with better channel quality and notify the second terminal device.

In a possible design, when the total number of resources included in the third resource meets the first preset condition, the first terminal device will reserve the first resource with a signal strength greater than a third threshold. The first resource corresponding to the reservation message is used as the resource in the third resource, and the third threshold is less than the first threshold; wherein, the first preset condition includes the total number of resources included in the third resource and The ratio of the total number of resources corresponding to the selection window is less than the preset ratio, or the total number of resources included in the third resource is less than the preset number.

With the above design, when the number of third resources determined by the first terminal device does not meet the requirements, more third resources can be screened out by lowering the first threshold.

In a possible design, after the first terminal device sets the first resource corresponding to the reservation message whose signal strength is greater than a third threshold in the reservation message for the first resource as the resource in the third resource ,Also includes:

When the third resource satisfies the first preset condition, the first terminal device uses the first resource corresponding to the reservation message whose signal strength is greater than the fourth threshold in the reservation message for the first resource reservation as the first resource In the third resource, the fourth threshold is less than the third threshold;

When the third resource does not meet the first preset condition, the first terminal device determines that the third resource includes a reservation message with a signal strength greater than a third threshold in the reservation message for reserving the first resource Part of the resources or all of the corresponding first resources.

With the above design, when the number of third resources determined by the first terminal device does not meet the requirements, more third resources can be screened out by lowering the first threshold multiple times.

In a possible design, the third resource further includes a second resource corresponding to a reservation message with at least one signal strength less than a second threshold in the reservation message for reserving the second resource, and the second resource refers to A resource reserved by a terminal device other than the second terminal device, and the second resource does not include the resource reserved by the third terminal device for sending information to the second terminal device; when the third resource satisfies In the case of the first preset condition, the first terminal device will reserve the first resource corresponding to the reservation message whose signal strength is greater than the third threshold in the reservation message of the first resource, and reserve the second resource The second resource corresponding to the reservation message whose signal strength is less than the fourth threshold in the reservation message is used as the resource in the third resource, the third threshold is less than the first threshold, and the fourth threshold is greater than the second Threshold; the first preset condition includes that the ratio of the total number of resources included in the third resource to the total number of resources corresponding to the selection window is less than a preset ratio, or the total number of resources included in the third resource is less than a preset number.

With the above design, when the number of third resources determined by the first terminal device does not meet the requirements, more third resources can be screened out by increasing the second threshold multiple times and reducing the first resources multiple times.

In a possible design, the first resource corresponding to the reservation message whose signal strength is greater than the third threshold in the reservation message for the first resource reservation by the first terminal device, and the reservation message for the second resource After the second resource corresponding to the reservation message whose signal strength is less than the fourth threshold in the reservation message is used as the resource in the third resource, the method further includes: when the third resource satisfies the first preset condition, then The first terminal device reserves the first resource corresponding to the reservation message whose signal strength is greater than the fifth threshold in the reservation message for the first resource, and the reservation whose signal strength is less than the sixth threshold in the reservation message for the second resource The second resource corresponding to the message is used as the resource in the third resource, the fifth threshold is less than the third threshold, and the sixth threshold is greater than the fourth threshold; when the third resource does not satisfy the In the case of the first preset condition, the first terminal device determines that the third resource includes a part of the first resource corresponding to the reservation message whose signal strength is greater than the third threshold in the reservation message for reserving the first resource Or all resources, and part of or all resources in the second resource corresponding to the reservation message whose signal strength is less than the fourth threshold in the reservation message for reserving the second resource.

With the above design, when the number of third resources determined by the first terminal device does not meet the requirements, more third resources can be screened out by increasing the second threshold and reducing the first resources.

In a possible design, the third resource further includes a second resource corresponding to a reservation message with at least one signal strength less than a second threshold in the reservation message for reserving the second resource, and the second resource refers to A resource reserved by a terminal device other than the second terminal device, and the second resource does not include the resource reserved by the third terminal device for sending information to the second terminal device; when the third resource satisfies Under the first preset condition, the first terminal device sequentially adjusts the first threshold to a sixth threshold and a seventh threshold, and the sixth threshold and the seventh threshold are both smaller than the first threshold , And sequentially determine whether the third resource meets the first preset condition; wherein, after the first terminal device adjusts the first threshold to a sixth threshold, the third resource includes the at least Part of the resources in a first resource; after the first terminal device adjusts the first threshold to a seventh threshold, the third resource includes all resources in the at least one first resource; in the After the first terminal device adjusts the first threshold to a sixth threshold, the first terminal device determines that the third resource satisfies the first preset condition, and the first terminal device adjusts the first After a threshold is adjusted to a seventh threshold, the first terminal device determines that the third resource satisfies the first preset condition, then the first terminal device adjusts the second threshold to an eighth threshold, so The eighth threshold is greater than the second threshold, and the seventh threshold is adjusted back to the first threshold; the second threshold is adjusted to the eighth threshold in the first terminal device, and the first After the seventh threshold is adjusted back to the first threshold, when the first terminal device determines that the third resource satisfies the first preset condition, the first terminal device sequentially adjusts the first threshold to the first Sixth threshold and seventh threshold, and sequentially determine whether the third resource meets the first preset condition, until the third resource does not meet the first preset condition.

With the above design, when the number of third resources determined by the first terminal device does not meet the requirements, the third resources can be selected by reducing the number of first resources multiple times. If the number of third resources still does not meet the requirements, then increase The third resource is screened by the second threshold, and the two are performed alternately until the number of third resources meets the requirement.

In a possible design, the first information includes the identifier of the second terminal device, or the priority of transmission from the second terminal device to the first terminal device, or the size of the resource block that needs to be fed back At least one of them.

With the above design, the first information can indicate information required by multiple first terminal devices to determine the third resource.

In a possible design, the first terminal device receives data from the second terminal device on a fourth resource, and the fourth resource is determined according to the third resource.

With the above design, the second terminal device can determine the resource used for transmission to the first terminal device according to the resource notified by the first terminal device.

In a second aspect, an embodiment of the present application provides a communication device, which includes a module for executing any one of the first aspect and the first aspect.

In a third aspect, an embodiment of the present application provides a communication device, including a processor and an interface circuit, the interface circuit is used to receive signals from other communication devices other than the communication device and transmit them to the processor or The signal from the processor is sent to another communication device other than the communication device, and the processor is used to implement any one of the first aspect and the first aspect through a logic circuit or executing code instructions.

In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium in which a computer program or instruction is stored. When the computer program or instruction is executed by a communication device, the first aspect and the first aspect are implemented. Any one of the possible designs.

In a fifth aspect, the embodiments of the present application provide a computer program product containing a program, which when running on a communication device, causes the communication device to execute any one of the possible designs of the first aspect and the first aspect.

Description of the drawings

FIG. 1 is a schematic diagram of communication between UE-A and UE-B applied in an embodiment of this application;

FIG. 2 is a schematic diagram of UE-B communicating with UE-A and UE-C applied in an embodiment of this application;

Figure 3(a) is a schematic diagram of UE-A determining the resources used by UE-A for transmission in an embodiment of this application;

Figure 3(b) is a schematic diagram of UE-A notifying UE-B of a group of resources in an embodiment of this application;

FIG. 4 is an overview flowchart of a method for processing perception results in an embodiment of the application;

FIG. 5 is a schematic diagram of UE-A determining the first resource and the second resource in an embodiment of this application;

FIG. 6 is one of the schematic diagrams of UE-A determining the third resource in an embodiment of this application;

FIG. 7 is the second schematic diagram of UE-A determining the third resource in an embodiment of this application;

FIG. 8 is the third schematic diagram of UE-A determining the third resource in an embodiment of this application;

FIG. 9 is the fourth schematic diagram of UE-A determining the third resource in an embodiment of this application;

FIG. 10 is one of the flowcharts of UE-A notifying UE-B of the third resource in an embodiment of this application;

FIG. 11 is the second flowchart of UE-A notifying UE-B of the third resource in an embodiment of this application;

FIG. 12 is the third flow chart of UE-A notifying UE-B of the third resource in an embodiment of this application;

FIG. 13 is the fourth flow chart of UE-A notifying UE-B of the third resource in an embodiment of this application;

FIG. 14 is one of the schematic structural diagrams of a communication device in an embodiment of this application;

FIG. 15 is the second structural diagram of a communication device in an embodiment of this application.

Detailed ways

With the evolution of communication technology, the Internet of Everything is also accelerating. During Release 14 and 15, 3GPP introduced vehicle-to-vehicle (V2V) V2V and V2V in the long term evolution (LTE). V2X service support to extend the 3GPP platform to the automotive industry. During Release 16, the relevant design of the new radio (NR) V2X was studied. Further optimization will continue to be discussed in Release 17 NR sidelink enhancement (sidelink enhancement). Specifically, it is related to the enhancement of resource allocation. Considering the power reduction solutions proposed based on Release 14 and 15 as the basis, further optimization or new solutions are proposed to achieve the purpose of power reduction. In addition to the goal of reducing power consumption, improving reliability and reducing time delay are the other two main goals.

The application scenario of the embodiment of the present application includes at least two terminal devices. Wherein, the first terminal device and the second terminal device have completed establishing a sidelink connection, and the first terminal device and the second terminal device can communicate through the sidelink. The terminal device involved in the embodiments of the present application may be a vehicle terminal (VUE), a person user (PUE), or a vulnerable road user (VRU). Among them, the VUE may be a vehicle-mounted communication module or other embedded communication modules, and the VRU may include a PUE. The terminal device can also be a user's handheld communication device, including a mobile phone, a tablet computer, and so on.

As shown in Figure 1, UE-A can communicate with UE-B, and UE-A can notify UE-B of a set of resources. As shown in Figure 2, UE-B can also communicate with other UEs, such as UE-C. Among them, UE-A and UE-B may be vehicle users (VUE).

The perception mechanism is explained below. Regarding the periodic service introduced by R14, the terminal device can perceive the appearance of the periodic service through the sensing mechanism, so as to recognize whether the periodic resource corresponding to the periodic service can be used as the resource for the subsequent transmission of the terminal device. The gap is identified as a gap. Gap is generally an integral multiple of 100ms. In a few cases, 20ms and 50ms can be selected.

It can be understood that, in Figure 3(a), after UE-A determines the transmission demand at time n, UE-A determines the perception window and selection window according to time n. Exemplarily, the physical layer of UE-A receives signaling from a higher layer of UE-A at time n, where the signaling indicates that UE-A has transmission requirements. UE-A first determines the selection window according to time n. Specifically, the UE determines to start transmission at a time after time n according to the signaling. Therefore, the start position of the selection window is after time n, and the length of the selection window can be specified by the protocol . For example, according to the signaling, UE-A determines that one or more times between time n+3 and time n+10 are occupied for transmission, UE-A may determine that the start position of the selection window is time n+3. Further, in combination with various possibilities of gap, UE-A can map the position of the sensing window according to the determined position of the selection window. For example, the end position of the perception window may be at time n-1. It is understandable that UE-A can always perceive the reservation message before time n.

UE-A perceives the reservation message in the sensing window, and determines the position of the reservation resource of the service period corresponding to the reservation message in the selection window, and can further judge whether the resource can be used as the subsequent transmission of UE-A based on the signal strength of the reservation message H. If the signal strength is lower than a certain threshold, the resource can be used as a resource for subsequent transmission of UE-A. If the signal strength is higher than a certain threshold, the resource cannot be used as a resource for subsequent transmission of UE-A.

In Figure 3(b), within the sensing window of UE-A, UE-A receives the first information from UE-B. The first information is used to instruct UE-A to notify UE-B of at least one resource. UE-A may send second information to UE-B according to the sensing result. The second information is used to notify UE-B of at least one resource, such as the resource shown by the dashed box in FIG. 3(b). UE-B may select one of the resources to transmit to UE-A according to the at least one resource. Among them, UE-A can determine the resource reserved by UE-B in the UE-A selection window and/or the resource reserved by other UEs for sending information to UE-B (hereinafter referred to as the first resource). For example, if at least one resource notified by UE-A to UE-B includes the resource reserved by UE-B in the UE-A selection window, UE-B is required to decide whether to use the resource to transmit to UE-A or transmit to other UEs . For another example, if at least one resource notified by UE-A to UE-B includes a resource reserved by other UEs to send information to UE-B, UE-B is required to decide to receive information from other UEs on this resource. , Whether to simultaneously transmit to UE-A on this resource. Therefore, the first resource has a certain particularity. However, when UE-A notifies UE-B of at least one resource, only a single method is used to determine whether the resource can be used as a resource for UE-B transmission, that is, the reservation message is reserved according to the signal strength of the reservation message. Whether the resources can be used as resources for UE-B transmission, which may cause UE-B to fail to select better resources to communicate with UE-A.

It should be understood that the reservation message involved in the embodiment of the present application includes a control information part and a data information part. Taking the first terminal device as an example, when the first terminal device detects a reservation message, it parses the control information part of the reservation message. When the first terminal device determines that the target device of the reservation message is the first terminal device, the first terminal device The device parses the data information part of the reservation message. When the first terminal device determines that the target device of the reservation message is not the first terminal device, the first terminal device does not parse the data information part of the reservation message. In addition, by analyzing the control information part of the reservation message, the first terminal device can determine whether the service corresponding to the reservation message is a periodic service or a non-periodic service and the position of the resource reserved by the reservation message in the selection window, and can also determine The priority of the reserved resource. According to the detected signal strength of the reservation message, the first terminal device determines whether the resource reserved by the reservation message can be used as a resource for subsequent transmission by the first terminal device or whether the resource reserved by the reservation message can be used for subsequent transmission by other terminal devices. Resources used.

The embodiment of the present application provides a method for processing perception results, so as to realize that UE-A can better filter out a set of resources notified to UE-B based on the perception result, so as to prevent UE-B from selecting poorer resources and UE-A. To communicate, as shown in Figure 4, the method includes:

S401: The second terminal device sends the first information to the first terminal device.

Wherein, the second terminal device may send the first information to the second terminal device through the side link.

Exemplarily, the first information may include, but is not limited to, the following information: information used to indicate the resource location of the first terminal device to send the second information, the priority of the second terminal device's transmission to the first terminal device, and the second terminal device The identifier (for example, Layer-1 source ID, which occupies 8 bits), requires the size of the resource block to be fed back. Wherein, the size of the resource block that needs to be fed back is used to indicate the size of the resource block notified by the first terminal device to the second terminal device.

In some embodiments, the first information may display indicating that the first terminal device informs the second terminal device of at least one resource, or it may also be described as the first information may display indicating that the first terminal device recommends at least one resource for the second terminal device. resource. For example, the second terminal device sends configuration information or a trigger message to the first terminal device, the message carries a first field, and the first field is used to indicate whether the first terminal device is the second terminal device to notify at least one resource. Assuming that the first field includes 1 bit, when the 1 bit indicates 1, it indicates that the first terminal device informs the second terminal device of at least one resource, that is, the first information. When the 1 bit indicates 0, it indicates that the first terminal device does not At least one resource is notified to the second terminal device.

In some embodiments, after the first terminal device receives the first information from the second terminal device, the first terminal device may also determine whether it is the second terminal device to notify at least one resource in combination with other preset conditions.

Exemplarily, the first terminal device may determine whether to recommend resources to the second terminal device based on the distance between the first terminal device and the second terminal device.

In some embodiments, if the first terminal device determines that the distance from the second terminal device is less than or equal to the first threshold, the first terminal device may not recommend resources. The advantage of this method is that when the first terminal device determines that the distance to the second terminal device is relatively close, it can be determined that the communication condition between the first terminal device and the second terminal device is better. At this time, the second terminal device can select more resources and does not need to be recommended by the first terminal device.

In some embodiments, if the first terminal device determines that the distance from the second terminal device is greater than the second threshold, the second terminal device may not recommend resources. The advantage of this method is that when the first terminal device determines that the distance from the second terminal device is relatively long, it is difficult to guarantee the communication quality because the distance between the first terminal device and the second terminal device is relatively long. Therefore, the first terminal device After the device receives the first information, even if the first terminal device recommends resources to the second terminal device, the resources recommended by the first terminal device are generally less, and the quality of the resources is generally poor. Therefore, the first terminal device can Do not recommend resources for the second terminal device, saving the resource overhead of the second terminal device.

In addition, in some embodiments, when the first terminal device determines that it fails to select any resources, for example, when the first terminal device determines that the resources in the selection window are all occupied, the first terminal device does not send any resources to the second terminal. Recommended resources for equipment.

In other embodiments, the first information may not include a field for indicating whether the first terminal device is the second terminal device to notify at least one resource. When the first terminal device receives the first information, the first terminal device determines to notify the second terminal device of at least one resource.

S402: The first terminal device determines at least one first resource in the selection window based on the first information.

The first resource is a resource reserved by the second terminal device, and/or a resource reserved by the third terminal device for sending information to the second terminal device. For example, as shown in FIG. 5, if the first terminal device is UE-A, and the second terminal device is UE-B. The resource reserved by the second terminal device may refer to the resource reserved by UE-B to send information to UE-C. The resource reserved by the third terminal device for sending information to the second terminal device may refer to the resource reserved by the UE-C for sending information to the UE-B.

In some embodiments, the first resource occupies 1 time slot in the time domain, or more than 1 time slot, and occupies at least one sub-channel in the frequency domain.

Exemplarily, the first terminal device may use the following method to determine the first resource: the first terminal device receives at least one reservation message, and determines at least one resource according to each reservation message. Among them, one reservation information can reserve one or more resources. For example, one reservation message can reserve 3 resources.

For example, the first terminal device receives multiple reservation messages in the sensing window and parses the source ID in each reservation message. When it is determined that the source ID included in the reservation message is the Layer-1 source ID of the second terminal device, the reservation message The reserved resource is the first resource.

For another example, the first terminal device receives multiple reservation messages in the perception window, and parses the destination ID (destination ID) in each reservation message. When it is determined that the destination ID included in the reservation message is the ID of the second terminal device, the The resource reserved by the reservation message is the first resource.

It should be noted that, for resources other than the first resource in the selection window, the first terminal device detects whether these resources are reserved by other terminal devices in the sensing window, and determines the idle resources and the second resources among them. Among them, idle resources refer to resources that have not been reserved, and the second resource is a reserved resource. Specifically, the second resource refers to a resource reserved by a terminal device other than the second terminal device, and the second resource does not include the third resource. The terminal device sends the resource reserved by the information to the second terminal device.

For example, taking resource A as an example, if resource A is not reserved, then resource A is a non-reserved resource or an idle resource. At this time, the first terminal device may directly use resource A as the third resource, or include resource A in the candidate resource pool. If resource A has a reservation, the first terminal device determines a signal strength threshold (hereinafter referred to as threshold 1, namely the second threshold) according to the priority of the transmission from the first terminal to the second terminal and the priority of the reserved resource A ). When the signal strength of the reservation message (i.e. reservation message) corresponding to resource A is greater than or equal to the threshold 1, resource A cannot be used as the resource used by the second terminal device to transmit to the first terminal device (i.e., resource A has a signal strength greater than or The second resource corresponding to the reservation message equal to the second threshold), otherwise, resource A can be used as the resource used by the second terminal device to transmit to the first terminal device (that is, the first resource corresponding to the reservation message whose signal strength is less than the second threshold). Two resources). Wherein, the threshold 1 may be SL-ThresRSRP_pi_pj, pi in SL-ThresRSRP_pi_pj is the priority of the transmission of the reserved resource A, and pj is the priority of the second terminal device's transmission to the first terminal device. When the resource A can be used as the resource used by the second terminal device to transmit to the first terminal device, the first terminal device can directly use the resource A as the third resource, or include the resource A in the candidate resource pool.

It is understandable that the first terminal device may further perform random resource selection according to the resource pool to be selected. Exemplarily, a high level in the first terminal device performs further random resource selection. Specifically, the higher layer may perform random resource selection for the resource pool to be selected according to the number of third resources that need to be notified to the second terminal device. Among them, the quantity of the third resource is related to the capacity of the second information.

It should be noted that if the first terminal device determines that resource B is reserved, and the priority of the reserved resource B for transmission is different from the priority of the reserved resource A for transmission, then the first terminal device sends the first terminal device to the second terminal according to the The priority of equipment transmission and the priority of reserved resource B for transmission determine a signal strength threshold (hereinafter referred to as threshold 2), where threshold 1 and threshold 2 are independent parameters, and the value of threshold 1 may be the same as that of threshold 2. The value is the same or different.

As shown in Fig. 5, UE-A receives the first information from UE-B at the resource location marked 1 in the sensing window. The resource location marked 2 is the resource location where UE-A sends the second information to UE-B. The resource location of the resource block marked by the diagonal line in the perception window of UE-A, and the reservation message sent by UE-B to other UEs or the reservation message sent by other UEs to UE-B is received. For example, other UEs here can be UE-C etc. The first resource is a resource block marked in black in FIG. 5. In addition, UE-A also receives reservation messages sent by other UEs at the resource location of the resource block marked on the lower diagonal within the sensing window. These reservation messages reserve the second resource in the selection window, as shown in the grid in Figure 5. The marked resource block.

S403: The first terminal device determines a third resource according to the at least one first resource. It can be understood that the third resource is a resource recommended by the first terminal device to the second terminal device.

In some embodiments, the third resource is used for the second terminal device to transmit to the first terminal device.

In some embodiments, the second terminal device may select a resource from the third resource to transmit to the first terminal device. Or, in some embodiments, the second terminal device may also select resources other than the third resource to transmit to the first terminal device according to other conditions (for example, resources perceived by the second terminal device). The embodiment of the present application does not limit that the resource used by the second terminal device to transmit to the first terminal device comes from the third resource.

Wherein, the number of the third resource can be one or more.

Wherein, the third resource may be determined according to the first resource, the idle resource, and the second resource.

For a specific embodiment of S403, refer to the following.

S404: The first terminal device sends second information to the second terminal device, where the second information indicates the third resource.

Exemplarily, the second information may indicate the time domain position and frequency domain position of each third resource. In addition, if the third resource is a periodic resource, the second information may also indicate the period of the third resource. At the same time, the second information may also indicate information such as the priority of the third resource, which is not limited in the embodiment of the present application. Wherein, the priority of the third resource is the priority of transmission from the second terminal device that the third resource can support to the first terminal device. Exemplarily, the second information may include an index of the priority of the third resource, for example, the priority index here is a value in 1-8.

It is understandable that after the first terminal device sends the second information to the second terminal device, the first terminal device receives data from the second terminal device on a fourth resource, and the fourth resource is based on the first terminal device. Three resources are determined.

For S403, the first terminal device may adopt but not limited to the following scheme to determine the third resource.

Solution 1: The third resource does not include any one of the at least one first resource.

At this time, the third resource includes the second resource and/or idle resource.

Using scheme 1, since the first resource is not included in the third resource, the second terminal device does not need to adjust the transmission resources with other terminal devices for transmission with the first terminal device, which can save the processing capacity of the second terminal device and It is possible to reduce resource conflicts caused by the second terminal device's transmission adjustment with the first terminal device and the transmission of other terminal devices.

As shown in Fig. 6, UE-A receives the first information from UE-B at the resource location marked 1 in the sensing window. The resource location marked 2 is the resource location where UE-A sends the second information to UE-B. The resource location of the resource block marked by the diagonal line in the perception window of UE-A, and the reservation message sent by UE-B to other UEs or the reservation message sent by other UEs to UE-B is received. For example, other UEs here can be UE-C etc. The first resource is a resource block marked by X in FIG. 6. In addition, UE-A also receives reservation messages sent by other UEs at the resource location of the resource block marked on the lower diagonal within the sensing window. These reservation messages reserve the second resource in the selection window, as shown in the grid in Figure 6. The marked resource block. Among them, the third resource does not include the resource block marked with X. Or, the resource pool to be selected does not include resource blocks marked with X.

Solution 2: The third resource does not include any resource occupying the first time slot, and the first time slot is a time slot corresponding to at least one first resource respectively.

At this time, the third resource includes the second resource and/or the idle resource, and the second resource does not occupy the first time slot, and the idle resource does not occupy the first time slot.

Using scheme 2, when the first terminal device does not notify the resource occupying the first time slot, if the first resource is the resource reserved by the second terminal device, it can avoid that the second terminal device needs to complete two services in the same time slot , Resulting in insufficient power; if the first resource is the resource reserved by the third terminal device to send information to the second terminal device, it can be avoided that other terminal devices send data to the second terminal device while the second terminal device sends data to the first terminal device. The data sent by the device brings the problem of receiving and sending conflicts to the first terminal device.

Exemplarily, UE-A determines the resource reserved by UE-B to send a message to UE-C (hereinafter referred to as resource A). If the third resource includes a resource occupying a time slot of resource A, such as resource B, when UE-B When -B selects resource B to send a message to UE-A according to the third resource, UE-B also needs to use resource A to send a message to UE-C at the same time, which may cause insufficient transmission power of UE-B.

Exemplarily, UE-A determines the resource reserved by UE-C to send a message to UE-B (hereinafter referred to as resource A'), if the third resource includes a resource occupying a time slot of resource A', such as resource B', Then, when UE-B selects resource B'to send a message to UE-A according to the third resource, UE-B also needs to receive the message sent by UE-C in resource A'at the same time. Therefore, UE-B may cause a conflict in sending and receiving.

Solution 3: The third resource includes all resources in at least one first resource.

It is understandable that, at this time, the third resource may also include the second resource and/or idle resource.

Using scheme 3, the first terminal device uses all the first resources as resources in the third resource, so that the first terminal device can adjust the transmission resources with other terminal devices for transmission with the second terminal device, thereby ensuring the first terminal device. The communication quality between the terminal device and the second terminal device.

In some embodiments, the first terminal device determines according to at least one first resource that the third resource includes all the resources reserved by the second terminal device, that is, does not include the resources reserved by the third terminal device for sending information to the second terminal device. resource.

In an example, the first terminal device may determine the number of third resources that need to be notified to the second terminal device, and then use all the first resources as the third resources, that is, not put all the first resources in the candidate resource pool. After all the first resources are used as the third resources, if the number of the first resources is less than the number of the third resources that need to be notified to the second terminal device, the higher layer then selects the idle resources and/or from the pool of resources to be selected. Or, another third resource is determined from the second resource corresponding to the reservation message whose signal strength is less than the second threshold.

In another example, the first terminal device may put all the first resources into the candidate resource pool, and then the higher layer randomly determines the third resource from the candidate resource pool. At this time, the third resource may include all the first resources, or the third resource may include part of the first resources.

It is understandable that in the above two examples, all first resources may also refer to all resources reserved by the second terminal device, that is, excluding the resources reserved by the third terminal device for sending information to the second terminal device.

Solution 4: The third resource includes part of at least one resource.

Using scheme 4, the first terminal device can effectively screen the first resource and improve the effectiveness of the first resource included in the third resource.

In some embodiments, the first terminal device determines according to at least one first resource that the third resource includes part of the resources reserved by the second terminal device, that is, does not include the resources reserved by the third terminal device for sending information to the second terminal device. resource.

It is understandable that the first terminal device may adopt but not limited to the following solutions to determine the first resource included in the third resource.

Example 1: The third resource includes a first resource whose first priority is lower than the priority of transmission from the second terminal device to the first terminal device. The reservation message for reserving the first resource includes a first priority, and the first priority is a priority for reserving the first resource for transmission.

It is understandable that the first terminal device receives the reservation message, and can determine according to the reservation message that the resource reserved by the reservation message is the first resource, and the reservation message includes the priority of reserving the first resource for transmission, that is, the first priority. The first terminal device compares the first priority with the communication priority of the second terminal device to the second terminal device (hereinafter referred to as the second priority), and if the first priority is higher than the second priority, it will make an appointment with the The first resource corresponding to the message is not used as the resource in the third resource. If the first priority is lower than the second priority, the first resource corresponding to the reservation message is used as the resource in the third resource. Wherein, when the first priority is the same as the second priority, the first resource corresponding to the reservation message may be used as a resource in the third resource, or may not be used as a resource in the third resource. For example, it can be stipulated by agreement whether the first resource is used as the resource in the third resource when the priority is the same.

As shown in Figure 7, UE-A receives the first information from UE-B at the resource location marked 1 in the sensing window. The resource location marked 2 is the resource location where UE-A sends the second information to UE-B. The resource location of the resource block marked by the diagonal line in the perception window of UE-A, and the reservation message sent by UE-B to other UEs or the reservation message sent by other UEs to UE-B is received. For example, other UEs here can be UE-C etc. Wherein, the transmission priority of the resource block marked X is greater than or equal to the priority of UE-B transmission to UE-A. Therefore, the third resource does not include the resource block marked X or the resource pool to be selected does not include the resource block marked X. Resource block. The priority of reserving black resource blocks for transmission is less than the priority of UE-B transmitting to UE-A. Therefore, the third resource includes black resource blocks or the candidate resource pool includes black resource blocks.

Example 2: The first terminal device may also determine whether the The first resource is included in the third resource.

When the first resource is an aperiodic resource, the third resource includes the aperiodic first resource. It can be understood that, since the number of aperiodic first resources is limited, the first terminal device may directly determine that the aperiodic first resource is the third resource.

When the first resource is a periodic resource, if the period of the first resource falls within the preset period range, or the period of the first resource is greater than the preset period, the first terminal device determines the first resource as the third resource resource. For example, the first terminal device determines two first resources, where the period of one first resource is 4 time slots and is denoted as resource A, and the period of the other first resource is 90 time slots and is denoted as resource B. Assuming that the preset period is 30 time slots, the first terminal device determines that the third resource includes resource B.

Or, when the first resource is a periodic resource, if the period of the first resource is less than the preset period, the first terminal device determines the first resource as the resource in the third resource. Among them, the preset period range or preset period can be stipulated by agreement.

Example 3: The third resource includes the first resource corresponding to the reservation message whose signal strength is greater than the first threshold in the reservation message for reserving the first resource.

It is understandable that the first terminal device can measure the signal strength of the reservation message. For example, the first terminal device may measure the reference signal receiving power (RSRP) of the demodulation reference signal (DMRS) of the reservation message. If the signal strength of the reservation message is greater than the first threshold, the first terminal device determines that the third resource includes the resource reserved by the reservation message (that is, the first resource). Otherwise, the first terminal device determines that the third resource does not include the first resource.

Wherein, the first threshold may be pre-configured or defined by network equipment or standards. As the signal strength of the reservation message is higher, it indicates that the channel quality of the resource (that is, the first resource) reserved by the reservation message is better. Therefore, the first terminal device notifies the second terminal device of the first resource, which can effectively screen the first resource and improve the effectiveness of the first resource included in the third resource.

As shown in Figure 8, UE-A receives the first information from UE-B at the resource location marked 1 in the sensing window. The resource location marked 2 is the resource location where UE-A sends the second information to UE-B. The resource location of the resource block marked by the diagonal line in the perception window of UE-A, and the reservation message sent by UE-B to other UEs or the reservation message sent by other UEs to UE-B is received. For example, other UEs here can be UE-C etc. The resource reserved by the reservation message is the first resource. Wherein, the signal strength of the reservation message of the resource block marked X is less than or equal to the first threshold. Therefore, the third resource does not include the resource block marked X or the resource pool to be selected does not include the resource block marked X. The signal strength of the reservation message for reserving the black resource block is greater than the first threshold. Therefore, the third resource includes the black resource block or the candidate resource pool includes the black resource block. It is understandable that UE-A receives the reservation message sent by UE-B to other UEs at the resource position of the resource block marked on the diagonal in the sensing window, that is, the first resource in FIG. 8 may only include the second terminal The resource reserved by the device does not include the resource reserved by the third terminal device for sending information to the second terminal device.

It should be noted that the first terminal device may also combine any two or three of the above three examples to effectively screen the first resource. As shown in Figure 9, UE-A receives the first information from UE-B at the resource location marked 1 in the sensing window. The resource location marked 2 is the resource location where UE-A sends the second information to UE-B. The resource location of the resource block marked by the diagonal line in the perception window of UE-A, and the reservation message sent by UE-B to other UEs or the reservation message sent by other UEs to UE-B is received. For example, other UEs here can be UE-C etc. The resource reserved by the reservation message is the first resource. Wherein, the resource block marked X refers to the first resource reserved by the reservation message whose signal strength is less than or equal to the first threshold, or the transmission priority of the resource block marked X is greater than or equal to the transmission priority of UE-A to UE-B. Priority resource block. Therefore, the third resource does not include the resource block marked X or the candidate resource pool does not include the resource block marked X. It can be seen that the method of screening the first resource shown in FIG. 9 combines Example 1 and Example 3.

It is understandable that, in an example, the first terminal device can determine the number of third resources that need to be notified to the second terminal device, and then use the above-mentioned methods (for example, example 1, or example 2, or example 3, or Example 1 and Example 3) The first resource selected as the third resource, that is, this part of the first resource is not put into the candidate resource pool. After taking this part of the first resource as the third resource, if the number of the first resource is less than the number of the third resource that needs to be notified to the second terminal device, the higher layer then selects the idle resources and the free resources included in the pool of resources to be selected. /Or the second resource corresponding to the reservation message whose signal strength is less than the second threshold in the reservation message for the second resource reservation determines other third resources.

In another example, the first terminal device may put all the first resources screened out in the foregoing manner into the candidate resource pool, and then the higher layer randomly determines the third resource from the candidate resource pool. At this time, the third resource may include all the first resources that are screened out in the foregoing manner, or the third resource may include part of the first resources that are screened out in the foregoing manner.

For example, the first terminal device may determine the number of third resources that need to be notified to the second terminal device, and then use all the first resources whose first priority is lower than the priority of transmission from the second terminal device to the first terminal device as the first resource. The third resource, that is, this part of the first resource is not placed in the candidate resource pool. After taking this part of the first resource as the third resource, if the number of the first resource is less than the number of the third resource that needs to be notified to the second terminal device, the higher layer then selects the idle resources and the free resources included in the pool of resources to be selected. /Or the second resource corresponding to the reservation message whose signal strength is less than the second threshold in the reservation message for the second resource reservation determines other third resources.

Alternatively, the first terminal device may put all the first resources whose first priority is lower than the priority of transmission from the second terminal device to the first terminal device into the candidate resource pool, and then the higher layer randomly determines the first resource from the candidate resource pool. Three resources. At this time, the third resource may include all the first resources whose first priority is lower than the priority of the transmission from the second terminal device to the first terminal device, or the third resource may include some of the first resources whose first priority is lower than that of the second terminal. The first resource of the priority transmitted by the device to the first terminal device.

Further, when the first terminal device determines the third resource according to the at least one first resource, the number of third resources determined by the first terminal device needs to meet a preset requirement. If the total number of resources included in the third resource meets the first preset condition, the first terminal device may use but not limited to the following methods to increase the total number of resources included in the first resource. The first preset condition includes that the ratio of the total number of resources included in the third resource to the total number of resources corresponding to the selection window is less than the preset ratio, or the total number of resources included in the third resource is less than the preset number. It should be noted that the third resource may include part or all of the resources in at least one first resource, and/or non-reserved resources (i.e. idle resources), and/or at least one signal strength of the reservation message for reserving the second resource is less than The second resource corresponding to the reservation message of the second threshold.

Method 1: When the third resource includes at least one part of the first resource, the first terminal device uses the first resource corresponding to the reservation message whose signal strength is greater than the third threshold in the reservation message for reserving the first resource as the third resource Among resources, the third threshold is less than the first threshold. After the first terminal device uses the first resource corresponding to the reservation message whose signal strength is greater than the third threshold in the reservation message for the first resource reservation as the resource in the third resource, when the third resource still satisfies the first preset condition, Then, the first terminal device uses the first resource corresponding to the reservation message whose signal strength is greater than the fourth threshold in the reservation message for reserving the first resource as the resource in the third resource, and the fourth threshold is less than the third threshold. When the third resource does not meet the first preset condition, the first terminal device determines that the third resource includes a part of the first resource corresponding to the reservation message with the signal strength greater than the third threshold in the reservation message for reserving the first resource Or all resources.

It should be noted that the reason why the finally determined third resource includes part or all of the first resource corresponding to the reservation message whose signal strength is greater than the third threshold in the reservation message for the reservation of the first resource is that the determined resource is newly added. The number may not be equal to the number of resources required. For example, the first terminal device determines that the number of third resources that need to be notified to the second terminal device is 10, the current resource pool to be selected includes 8 resources, and 2 resources need to be determined. After the first terminal device reduces the signal strength from the first threshold to the third threshold, the resource pool to be selected includes 12 resources, that is, the number of newly determined resources is 4. Since the first terminal device can only notify the second terminal device of 10 resources, it is necessary to select 10 resources from the 12 resources included in the resource pool to be selected. Therefore, the finally determined 10 resources may include all or part of the first resource corresponding to the reservation message whose signal strength is greater than the third threshold in the reservation message for reserving the first resource.

Exemplarily, the first terminal device may gradually reduce the first threshold, for example, by 3 dB each time, until the number of resources included in the resource pool to be selected does not meet the first preset condition, and the first terminal device determines the first threshold according to the resource pool to be selected. Three resources.

For example, the resource pool to be selected includes 5 first resources, at least one idle resource, and at least one second resource corresponding to a reservation message whose signal strength is less than a second threshold, for a total of 10 resources. If the number of resources included in the resource pool to be selected meets the first preset condition, the first terminal device reduces the first threshold by 3dB (that is, adjusts to the third threshold). If the first terminal device adjusts the first threshold to the third threshold, , The resource pool to be selected includes 12 resources, of which 7 are the first resources, and the number of resources included in the resource pool to be selected does not meet the first preset condition, the first terminal device may further determine that the current resource pool to be selected includes Whether the number of resources is greater than the number of third resources that need to be notified to the second terminal device, if the number of resources included in the resource pool to be selected is equal to the number of third resources that need to be notified to the second terminal device, then the third resource includes the number of resources to be notified to the second terminal device. Select 12 resources in the resource pool, of which 7 are the first resources. If the number of resources included in the resource pool to be selected is greater than the number of third resources that need to be notified to the second terminal device, the resource pool to be selected is further screened by higher layers, and the finally determined third resource includes one of the seven first resources. Some resources or all resources. If the first terminal device adjusts the first threshold to the third threshold, and the number of resources included in the resource pool to be selected still meets the first preset condition, the first terminal device reduces the third threshold by 3dB (that is, determines the fourth threshold) , Repeat the foregoing judgment process until the first terminal device determines that the number of resources included in the resource pool to be selected does not meet the first preset condition, and the first terminal device determines the third resource according to the resource pool to be selected.

Method 2: The first terminal device reserves the first resource corresponding to the reservation message whose signal strength is greater than the third threshold in the reservation message for the first resource, and the reservation message whose signal strength is less than the fourth threshold in the reservation message for the second resource The corresponding second resource is used as a resource in the third resource, the third threshold is less than the first threshold, and the fourth threshold is greater than the second threshold. The first terminal device will reserve the first resource in the reservation message corresponding to the first resource whose signal strength is greater than the third threshold, and the reservation message in the reservation message for the second resource corresponding to the reservation message whose signal strength is less than the fourth threshold After the second resource in the third resource is used as the third resource, when the third resource meets the first preset condition, the first terminal device will reserve the reservation message of the first resource with the signal strength greater than the fifth threshold corresponding to the reservation message The first resource, and the second resource corresponding to the reservation message whose signal strength is less than the sixth threshold in the reservation message for the second resource is used as the resource in the third resource. The fifth threshold is less than the third threshold, and the sixth threshold is greater than the fourth threshold. . When the third resource does not meet the first preset condition, the first terminal device determines that the third resource includes a part of the first resource corresponding to the reservation message with the signal strength greater than the third threshold in the reservation message for reserving the first resource Or all of the resources, and part or all of the resources in the second resource corresponding to the reservation message whose signal strength is less than the fourth threshold in the reservation message for reserving the second resource.

Similar to method 1, it should be noted that the finally determined third resource includes some or all of the first resources corresponding to the reservation message whose signal strength is greater than the third threshold in the reservation message for the reservation of the first resource, and the reservation The reason for the partial or all resources of the second resource corresponding to the reservation message whose signal strength is less than the fourth threshold in the reservation message of the second resource is that the number of newly determined resources may not be equal to the required number of resources.

Exemplarily, the first terminal device may gradually lower the first threshold, for example, by 3dB each time, while gradually increasing the second threshold, for example, by 3dB each time, that is, the first threshold and the second threshold are adjusted at the same time until the resource to be selected The number of resources included in the pool does not meet the first preset condition, and the first terminal device determines the third resource according to the pool of resources to be selected.

For example, if the resource pool to be selected includes 5 first resources and 5 second resources, and the number of resources included in the resource pool to be selected meets the first preset condition, the first terminal device reduces the first threshold by 3dB (that is, adjusts Is the third threshold), and the second threshold is increased by 3dB (adjusted to the fourth threshold). If the first terminal device adjusts the first threshold to the third threshold and adjusts the second threshold to the fourth threshold, the resource pool to be selected includes 7 first resources and 6 second resources, and the number of resources included in the resource pool to be selected does not meet the first preset condition, the first terminal device may further determine whether the number of resources included in the resource pool to be selected is greater than required The number of third resources notified to the second terminal device. If the number of resources included in the resource pool to be selected is equal to the number of third resources that need to be notified to the second terminal device, the third resource includes 7 first resources and 6 A second resource; if the number of resources included in the resource pool to be selected is greater than the number of third resources that need to be notified to the second terminal device, the resources included in the resource pool to be selected are further screened by higher layers, and the finally determined third resource includes Part of the resources in the 7 first resources, and part or all of the resources in the 6 second resources. If after the first terminal device adjusts the first threshold to the third threshold, the third resource includes 7 first resources and 6 second resources, and the third resource still satisfies the first preset condition, the first terminal device will The three thresholds are reduced by 3dB (that is, adjusted to the fifth threshold), while the fourth threshold is increased by 3dB (adjusted to the sixth threshold), and the above judgment process is repeated until the first terminal device determines that the third resource does not meet the first preset condition.

Method 3: The first terminal device uses the first resource corresponding to the reservation message whose signal strength is greater than the third threshold in the reservation message for the first resource as the resource in the third resource, and the third threshold is less than the first threshold. After the first terminal device uses the first resource corresponding to the reservation message whose signal strength is greater than the third threshold in the reservation message for the first resource reservation as the resource in the third resource, when the third resource still satisfies the first preset condition, Then, the first terminal device uses the first resource corresponding to the reservation message whose signal strength is greater than the fourth threshold in the reservation message for reserving the first resource as the resource in the third resource, and the fourth threshold is less than the third threshold. Further, after the first terminal device uses the first resource corresponding to the reservation message whose signal strength is greater than the fourth threshold in the reservation message for the first resource reservation as the resource in the third resource, if the third resource satisfies the first preset condition And the third resource includes all resources in the at least one first resource, the first terminal device uses the first resource corresponding to the reservation message whose signal strength is greater than the first threshold in the reservation message for reserving the first resource as the resource in the third resource (I.e. adjust the fourth threshold back to the first threshold), and the second resource corresponding to the reservation message whose signal strength is less than the fifth threshold in the reservation message for the second resource is used as the resource in the third resource, and the fifth threshold is greater than the second threshold . In the first terminal device, the first resource corresponding to the reservation message whose signal strength is greater than the first threshold in the reservation message for reserving the first resource is used as the resource in the third resource, and the signal strength in the reservation message for reserving the second resource is less than the fifth resource. After the second resource corresponding to the threshold reservation message is used as the resource in the third resource, when the third resource satisfies the first preset condition, the first terminal device will reserve the first resource with a signal strength greater than the fourth threshold in the reservation message The first resource corresponding to the reservation message is used as the resource in the third resource. After the first terminal device uses the first resource corresponding to the reservation message whose signal strength is greater than the fourth threshold as the third resource, if the third resource satisfies the first preset condition and the third resource includes at least one of the first resources All resources in the first resource, the first terminal device uses the first resource corresponding to the reservation message whose signal strength is greater than the first threshold in the reservation message for the first resource as the resource in the third resource (that is, the fourth threshold is adjusted back to the first threshold) , And the second resource corresponding to the reservation message whose signal strength is less than the sixth threshold in the reservation message for the second resource is used as the resource in the third resource, the sixth threshold is greater than the fifth threshold, and the above judgment process is repeated until the third resource is not satisfied In the first preset condition, the first terminal device determines the third resource. For example, in the first terminal device, the first resource corresponding to the reservation message whose signal strength is greater than the first threshold in the reservation message for reserving the first resource is used as the resource in the third resource, and the signal strength in the reservation message for reserving the second resource is less than After the second resource corresponding to the reservation message with the sixth threshold is used as the resource in the third resource, the first terminal device determines that the third resource does not meet the first preset condition, then the first terminal device determines that the third resource includes the first resource reservation Part of or all of the resources in the first resource corresponding to the reservation message whose signal strength is greater than the first threshold in the reservation message, and the second resource corresponding to the reservation message whose signal strength is less than the sixth threshold in the reservation message for the second resource Some or all of the resources in the resource.

Exemplarily, when the second threshold does not change, the first terminal device gradually lowers the first threshold (for example, the above-mentioned third and fourth thresholds) until the resource pool to be selected includes all the resources in the at least one first resource. If the number of resources included in the selected resource pool still meets the first preset condition, the first threshold is restored to the initial value, and then the second threshold is adjusted once (that is, the second threshold is increased once, for example, the fifth threshold). If the number of resources included in the selected resource pool still meets the first preset condition, the first threshold (for example, the third and fourth thresholds above) is gradually reduced until the resource pool to be selected includes all resources in at least one first resource, If the number of resources included in the resource pool to be selected still meets the first preset condition, the first threshold is restored to the initial value, and then the second threshold is adjusted again (that is, the second threshold is increased again, such as the sixth threshold) , Repeating the foregoing judgment process until the number of resources included in the resource pool to be selected does not meet the first preset condition, and the first terminal device determines the third resource according to the resource pool to be selected.

The embodiment shown in FIG. 4 will be described below in conjunction with specific embodiments.

Embodiment 1: One of the specific procedures for UE-A to notify UE-B of the third resource, as shown in FIG. 10. Among them, UE-B and UE-A can communicate through sidelink, and UE-B and UE-C can communicate through sidelink.

Step 1: UE-B sends first information to UE-A.

Step 2 (a): UE-B sends a reservation message to UE-C.

Step 2(b): UE-C sends a reservation message to UE-B.

It is understandable that this embodiment does not limit the sequence of step 2(a) and step 2(b), and step 2(a) and step 2(b) can be in and/or relationship. Hereinafter, only the relationship between step 2(a) and step 2(b) is taken as an example for description, and it is not a limitation of this embodiment.

Step 3: UE-A based on the first information, when UE-A detects that UE-B sends a reservation message to UE-C, UE-A determines the first resource reserved by the reservation message, which is denoted as resource A below. When UE-A detects that UE-C sends a reservation message to UE-B, UE-A determines the first resource reserved by the reservation message, which is denoted as resource B below.

Step 4: UE-A determines that the third resource includes resource A and resource B.

It should be noted that the UE-A may also determine other first resources within the sensing window, and determine that the third resource includes all the first resources. At this time, UE-A may determine that the third resource includes all the first resources, and the first resource includes the resource A and the resource B, and does not include all the first resources in the candidate resource pool. The to-be-selected resource pool includes idle resources and/or second resources corresponding to reservation messages whose signal strength is less than a second threshold in at least one of the reservation messages for reserving the second resource. UE-A may also determine resources other than the first resource as part of the third resource according to the pool of resources to be selected.

Alternatively, UE-A includes all the first resources in the candidate resource pool, and UE-A uses the third resource in the candidate resource pool. In this case, the third resource may include resource A and/or resource B, or the third resource may not Include resource A or resource B.

Alternatively, UE-A directly uses resource A as the third resource, and puts resource B in the candidate resource pool. UE-A determines other third resources according to the pool of resources to be selected. In this case, the third resources may include resource B, or the third resources may not include resource B.

Step 5: UE-A sends second information to UE-B, and the second information indicates the third resource.

Step 6: UE-B determines the fourth resource according to the second information.

Step 7: UE-B sends data to UE-A on the fourth resource.

Embodiment 2: The second specific process of UE-A notifying UE-B of the third resource, as shown in FIG. 11. Among them, UE-B and UE-A can communicate through sidelink, and UE-B and UE-C can communicate through sidelink.

Step 1: UE-B sends first information to UE-A.

Step 2 (a): UE-B sends a reservation message to UE-C.

Step 2(b): UE-C sends a reservation message to UE-B.

Step 4: UE-A determines the third resource.

Specifically, when UE-A determines that the signal strength of the reservation message corresponding to resource A is greater than the first threshold, it determines that the third resource includes resource A. Or, UE-A determines that the transmission priority of reserved resource A is lower than the transmission priority of UE-B to UE-A according to the transmission priority of reserved resource A included in the reservation message corresponding to resource A, and then determines the third Resources include resource A. Or, when UE-A determines that resource A is an aperiodic resource according to the reservation message corresponding to resource A, it determines that the third resource includes resource A. Or, when UE-A determines that resource A is a periodic resource according to the reservation message corresponding to resource A, and the period of resource A is greater than the preset period, it is determined that the third resource includes resource A. In the same way, UE-A can determine whether the third resource includes resource B by using the above judgment method.

Alternatively, UE-A may also use the foregoing judgment method to determine whether resource A and resource B are resources in the resource pool to be selected, and then UE-A determines the third resource according to the resource pool to be selected.

It should be noted that the UE-A may also determine other first resources within the sensing window, and may use the foregoing method to determine whether the other first resources are resources included in the third resource or resources included in the resource pool to be selected.

Step 7: UE-B sends data to UE-A on the fourth resource.

Embodiment 3: The third specific process of UE-A notifying UE-B of the third resource is shown in FIG. 12. Among them, UE-B and UE-A can communicate through sidelink, and UE-B and UE-C can communicate through sidelink.

Step 1: UE-B sends first information to UE-A.

Step 2 (a): UE-B sends a reservation message to UE-C.

Step 2(b): UE-C sends a reservation message to UE-B.

Step 4: UE-A determines that the third resource does not include resource A and resource B, or does not include the resource that occupies the time slot of resource A or the resource that occupies the time slot of resource B.

It should be noted that UE-A may also determine other first resources within the sensing window, and UE-A determines that the third resource does not include other first resources or does not include resources occupying time slots of other first resources.

Alternatively, UE-A determines that the resource pool to be selected does not include resource A and resource B, or does not include the resource that occupies the time slot of resource A or the resource that occupies the time slot of resource B.

Step 7: UE-B sends data to UE-A on the fourth resource.

With the above method, when UE-A notifies UE-B of a group of resources (that is, the third resource), the first resource can be effectively screened, and the effectiveness of the first resource included in the third resource can be improved, thereby ensuring that the UE-B -Communication quality between A and UE-B.

Example 1: UE-B sends resources reserved by other UEs. After UE-A perceives them, it is directly listed in the resource group to be selected. For the remaining resources, UE-A follows the existing technology scheme and uses signal thresholds for screening. The details are shown in Figure 10.

Step 1: UE-B sends a message to UE-A to trigger or configure auxiliary information transmission; UE-B can indicate the resource location of UE-A to send auxiliary information, and indicate the communication priority between UE-B and UE-A and other information, And UE-B's Layer-1 source ID (8bits), the size of the resource block to be fed back, and other information. The above-mentioned information is protected in the prior art, and it is listed here for integrity protection only.

Step 2: UE-B sends a message to UE-C, and UE-A receives the message sent by UE-B to UE-C, as shown in Figure 5.

Step 3: As described in step 2, UE-B sends information in the UE-A perception window and reserves part of the resources in the UE-A selection window. The UE-A obtains the spectrum occupancy in the selection window, and the reserved resources for the signal sent by the UE-B are directly listed as the recommended resources to be selected. Among them, the resource whose source ID of the signal in the sensing window is equal to the Layer-1 source ID of UE-B is the signal sent by UE-B, and the resources reserved for these signals are the resources reserved by UE-B.

Similar to the prior art, for the resources not occupied by UE-B, UE-A detects whether these resources are reserved by other UEs, and if there is a reservation, obtains the signal strength of these UEs, according to the communication between UE-A and UE-B. Priority, determine a signal strength threshold SL-ThresRSRP_pi_pj, when the signal strength of the above-mentioned UEs is higher than the threshold, the resource is not listed as a candidate resource, otherwise the resource is listed as a candidate resource and reported to RAN2 for further randomization Resource selection. Among them, pi in SL-ThresRSRP_pi_pj is the transmission priority of other UEs, and pj is the transmission priority of UE-B to UE-A.

Step 4: UE-A sends auxiliary information to UE-B.

After UE-A's RAN2 determines which resources are used as recommended resources, it is transmitted to UE-B as the content of auxiliary information.

Step 5: UE-B selects resources based on the auxiliary information sent by UE-A; UE-B may decide which resource is used for transmission based on UE-B's local perception and UE-A's auxiliary information.

Step 6: UE-B sends data or messages to UE-A.

The method of Example 1 is used to directly incorporate the resources reserved by UE-B from other UEs into the recommended resources of UE-A, and a processing method for the resources reserved by UE-B is given. The method of Example 1 is adopted so that the resource reserved by UE-B can appear in the recommendation information of UE-A for UE-B to consider when selecting resources. The prior art compares the resource reserved by UE-B with the signal threshold. It is unreasonable to include recommended resources if it is lower than the threshold.

Example 2: UE-A perceives the resources reserved by UE-B, and the reserved resources are used to send to other UEs. UE-A screens the resources reserved by UE-B, which can be screened according to whether the signal strength of UE-B is higher than a threshold, or according to the priority of the resource and the priority of UE-B sending messages to UE-A High and low screening, or the two requirements are used together for screening, and the selected resources are used as candidate recommended resources. The details are shown in Figure 11.

Step 2: UE-B sends a message to UE-C, and UE-A receives the message sent by UE-B to UE-C. As shown in Figures 7, 8, and 9, resource block 1 is that UE-B sends auxiliary information configuration messages to UE-A, and UE-B sends messages to other UEs, such as UE-C, which is the one that reserved the first resource. Reservation message, the reservation message for reserving the first resource reserves the resource in the selection window.

Step 3: As described in step 2, UE-B sends information in the UE-A perception window and reserves part of the resources in the UE-A selection window. UE-A perceives the spectrum occupancy and screens the signal reservation resources sent by UE-B. Among them, the resource whose source ID of the signal in the sensing window is equal to the Layer-1 source ID of UE-B is the signal sent by UE-B, and the resources reserved for these signals are the resources reserved by UE-B.

The resources reserved by UE-B can be screened from three aspects: signal strength, priority, and period. The following describes each screening method. A combination of any two aspects can also be used as a screening solution.

Signal strength: As shown in Figure 8, UE-A measures the RSRP strength of its DMRS, UE-A uses a threshold Y to screen, and resources higher than this threshold are used as resources in the resource pool to be selected. The threshold can be selected. Called "UE-B signal strength threshold"; UE-B signal strength threshold, its initial value can be pre-configured, or defined by the base station or standard; the reason for this operation is that the signal strength measurement can be understood as UE-B-based Send a signal, measure and screen the channel quality from UE-B to UE-A on each resource; therefore, the higher the signal strength at this time, the better the channel quality. Further optionally, the UE-B signal strength threshold may be related to the priority of UE-B transmission to UE-A, for example, a signal strength threshold may be determined based on the priority;

Priority: As shown in Figure 7, the resources reserved by UE-B are divided into two types: lower or higher than the priority of communicating with UE-A. The priority of resources reserved by UE-B is lower than the priority of communicating with UE-A. UE-A can include the reserved resource in the recommended resource pool; the priority of the resource reserved by UE-B is higher than the priority of communication with UE-A, and UE-A does not include the resource in the recommended resource pool;

Periodicity: The non-periodic resources reserved by UE-B. Due to the limited number of times, UE-A can directly include the resources listed in the recommended resource pool. The reason is that the resource occupation occurs only once, and does not appear in the future, so this resource can be used as one of the recommended resources; the periodic resource reserved by UE-B, the standard discussion gives a period range, which can be pre-configured or configured by high-level Period threshold. When the period is greater than the threshold, the resource reserved by the UE-B is included in the recommended resource pool; when the period is less than the threshold, the resource reserved by the UE-B is not included in the recommended resource pool;

For example, 1: The period is 4 time slots, and UE-B receives great restrictions when dividing resources, and if the period is 90 time slots, UE-B avoids the time slots reserved by itself when dividing resources. Resources are sufficient; example 2, other resources reserved by UE-B should not be excluded from the optional resources of UE-A;

As mentioned above, the resources reserved by UE-B can be screened from three aspects: signal strength, priority, and period. Any combination of two aspects can also be used as a screening solution, such as the combination of priority and signal strength, such as Shown in Figure 9.

Step 4: UE-A sends auxiliary information to UE-B.

Step 6: UE-B sends data or messages to UE-A.

The method of Example 2 is adopted to filter the resources reserved by UE-B by priority and/or threshold value, so as to improve the effectiveness of the included resources. The method of Example 2 is used to screen the resources reserved by UE-B, so that resources with better signals among these resources are included for UE-B to consider for resource reselection. Compared with example 1, additional methods such as priority, threshold, period, etc. are introduced for screening.

Example 3: UE-A perceives the resources reserved by UE-B, and the reserved resources are used to send to other UEs. UE-A screens the resources reserved by UE-B, and can screen according to whether the signal strength of UE-B is higher than a threshold. If the number of screened resources is insufficient, the threshold can be lowered to include more resources. The details are shown in Figure 13.

Steps 1 to 2 are omitted, and you can refer to Example 1 and Example 2 above.

Step 3: As described in step 2, UE-B sends information in the UE-A perception window and reserves some resources in the UE-A selection window. The UE-A obtains the spectrum occupancy in the selection window, and the reserved resources for the signal sent by the UE-B are directly listed as the recommended resources to be selected. Among them, the resource whose source ID of the signal in the sensing window is equal to the Layer-1 source ID of UE-B is the signal sent by UE-B, and the resources reserved for these signals are the resources reserved by UE-B.

For the resources reserved by UE-B, UE-A measures the RSRP strength of its DMRS, and UE-A uses a threshold value Y to screen, and resources higher than the threshold value are used as resources in the resource pool to be selected. The threshold value can be called Is "UE-B signal strength threshold";

Through the screening of the resources reserved by UE-B and other resources, if the number of selected resources is too small, UE-A needs to adjust the above two thresholds (threshold Y, SL-ThresRSRP_pi_pj) to increase the resources to be selected. The adjustment method is as follows:

When the proportion of optional resources is lower than the threshold X%, reduce the threshold Y, for example, 3dB;

Or SL-ThresRSRP_pi_pj is increased by 3dB, and the threshold Y is reduced by 3dB, until the proportion reaches X%;

Or when the threshold Y is reduced until the resources reserved by all UE-B are still not up to X%, after SL-ThresRSRP_pi_pj is increased, the threshold Y is reduced from the initial value until the requirement of X% is reached;

The above 1), 2), and 3) are three parallel processing methods.

Steps 4 to 6 are omitted, and you can refer to Examples 1 and 2.

The method of Example 3 is adopted to jointly adjust the threshold value introduced in the embodiment of the present application and the existing signal strength threshold to provide a processing method when the number of selected resources is insufficient. The method of Example 3 is used to screen the resources reserved by UE-B, so that resources with better signals among these resources are included for UE-B to consider for resource reselection. Compared with example 1 and example 2, example 3 gives the processing method when the number of resources is insufficient.

Example 4: UE-A perceives the resources reserved by UE-B, and the reserved resources are used to send to other UEs. When UE-A performs resource selection, the resource reserved by UE-B is not used as a candidate resource. Further, the resource reserved by UE-B is not used as a recommended resource, that is, it will not appear in the auxiliary information. Optionally, the time slot in which the resource reserved by UE-B is located is not used as the time domain range of the recommended resource for screening. The purpose is to prevent UE-B from needing to complete two services in the same time slot, resulting in insufficient power. As shown in Figure 12.

Steps 1 to 2 refer to the first and second embodiments, and will not be repeated.

Step 3: UE-B sends information in the UE-A perception window and reserves some resources in the UE-A selection window. UE-A obtains the spectrum occupancy in the selection window, and directly lists the reserved resources for the signal sent by UE-B In order to exclude, that is, in the determination of the candidate resource pool and the recommended resource, the resources reserved by the UE-B are not included. Because the above resources are not included, the signal strength on the resources reserved by the UE-B does not need to be compared with SL-ThresRSRP_pi_pj.

The advantage of this is that there is no resource reserved by UE-B in the auxiliary information. At this time, there is no need to adjust the transmission resources for other UEs for the transmission of UE-A, which reduces the processing of UE-B.

In another implementation, UE-B sends information in the UE-A perception window, and reserves some resources in the UE-A selection window, and UE-A obtains the spectrum occupancy in the selection window and makes reservations for the signal sent by UE-B The resources within the time slot range where the resource is located are directly listed as excluded, that is, the time slot where the resource reserved by UE-B is not listed in the candidate resource pool and the recommended resource pool. The purpose of this is to avoid the problem that UE-B needs to send two or more service types in the same time slot when selecting resources, resulting in insufficient power, and then only selecting one of them for transmission, as shown in Figure 6.

Steps 4 to 6 refer to Example 1 and Example 2, and will not be repeated.

By using the method of Example 4, by excluding the resources reserved by UE-B, it is avoided that the recommended resources cause UE-B to perform resource reselection, and the processing procedure of UE-B is reduced. By using the method of Example 4, by excluding the time slots reserved by UE-B, it is avoided that the recommended resources cause UE-B to perform multiple transmissions at the same time, and the scenario where multiple transmissions occur in the same time slot is avoided. The method of Example 4 is used to exclude the resources/slots reserved by UE-B, and a processing method for UE-B reserved resources is given.

It can be understood that, in order to implement the functions in the foregoing embodiments, the network device and the terminal device include hardware structures and/or software modules corresponding to each function. Those skilled in the art should easily realize that, in combination with the units and method steps of the examples described in the embodiments disclosed in the present application, the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a certain function is executed by hardware or computer software-driven hardware depends on the specific application scenarios and design constraints of the technical solution.

14 and 15 are schematic structural diagrams of possible communication devices provided by embodiments of this application. These communication devices can be used to implement the functions of the terminal device or the network device in the foregoing method embodiment, and therefore can also achieve the beneficial effects of the foregoing method embodiment. In the embodiment of the present application, the communication device may be a terminal device or a network device, and may also be a module (such as a chip) applied to a terminal device or a network device.

As shown in FIG. 14, the communication device 1400 includes a processing unit 1410 and a transceiving unit 1420. The communication device 1400 is configured to implement the functions of the terminal device or the network device in the method embodiments shown in FIG. 4, FIG. 10, FIG. 11, and FIG.

When the communication device 1400 is used to implement the function of the terminal device in the method embodiment shown in FIG. 4: the transceiver unit 1420 is configured to receive the first information from the second terminal device through the side link, so The first information is used to instruct the apparatus to notify at least one resource for the second terminal device; the processing unit 1410 is used to determine at least one first resource in a selection window based on the first information, and the first The resource is the resource reserved by the second terminal device and/or the resource reserved by the third terminal device for sending information to the second terminal device; the processing unit 1410 is further configured to determine the first resource according to the at least one first resource Three resources, the third resource is used for the second terminal device to transmit to the first terminal device; the transceiving unit 1420 is used for sending second information to the second terminal device, the second information indicating the The third resource.

More detailed descriptions of the processing unit 1410 and the transceiver unit 1420 can be obtained directly with reference to the relevant descriptions in the method embodiments shown in FIG. 4, FIG. 10, FIG. 11, and FIG. 12, and will not be repeated here.

As shown in FIG. 15, the communication device 1500 includes a processor 1510 and an interface circuit 1520. The processor 1510 and the interface circuit 1520 are coupled to each other. It can be understood that the interface circuit 1520 may be a transceiver or an input/output interface. Optionally, the communication device 1500 may further include a memory 1530 configured to store instructions executed by the processor 1510 or input data required by the processor 1510 to run the instructions or store data generated after the processor 1510 runs the instructions.

When the communication device 1500 is used to implement the methods shown in FIG. 4, FIG. 10, FIG. 11, and FIG.

When the foregoing communication device is a chip applied to a terminal device, the terminal device chip implements the function of the terminal device in the foregoing method embodiment. The terminal device chip receives information from other modules in the terminal device (such as a radio frequency module or antenna), and the information is sent by the network device to the terminal device; or, the terminal device chip sends information to other modules in the terminal device (such as a radio frequency module or antenna). The antenna) sends information, which is sent from the terminal device to the network device.

It is understandable that the processor in the embodiments of the present application may be a central processing unit (Central Processing Unit, CPU), or may be other general-purpose processors, digital signal processors (Digital Signal Processors, DSPs), or application specific integrated circuits. (Application Specific Integrated Circuit, ASIC), Field Programmable Gate Array (Field Programmable Gate Array, FPGA) or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. The general-purpose processor may be a microprocessor or any conventional processor.

The method steps in the embodiments of the present application can be implemented by hardware, and can also be implemented by a processor executing software instructions. Software instructions can be composed of corresponding software modules, which can be stored in Random Access Memory (RAM), Flash memory, Read-Only Memory (ROM), Programmable ROM (Programmable ROM) , PROM), Erasable Programmable Read-Only Memory (Erasable PROM, EPROM), Electrically Erasable Programmable Read-Only Memory (Electrically EPROM, EEPROM), register, hard disk, mobile hard disk, CD-ROM or well-known in the art Any other form of storage medium. An exemplary storage medium is coupled to the processor, so that the processor can read information from the storage medium and can write information to the storage medium. Of course, the storage medium may also be an integral part of the processor. The processor and the storage medium may be located in the ASIC. In addition, the ASIC can be located in a network device or a terminal device. Of course, the processor and the storage medium may also exist as discrete components in the network device or the terminal device.

In the above-mentioned embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented by software, it can be implemented in the form of a computer program product in whole or in part. The computer program product includes one or more computer programs or instructions. When the computer program or instruction is loaded and executed on the computer, the process or function described in the embodiment of the present application is executed in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, network equipment, user equipment, or other programmable devices. The computer program or instruction may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer program or instruction may be transmitted from a website, computer, or The server or data center transmits to another website site, computer, server or data center through wired or wireless means. The computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or a data center that integrates one or more available media. The usable medium may be a magnetic medium, such as a floppy disk, a hard disk, and a magnetic tape; it may also be an optical medium, such as a digital video disc (digital video disc, DVD); and it may also be a semiconductor medium, such as a solid state drive (solid state drive). , SSD).

In the various embodiments of this application, if there are no special instructions and logical conflicts, the terms and/or descriptions between different embodiments are consistent and can be mutually cited. The technical features in different embodiments are based on their inherent Logical relationships can be combined to form new embodiments.

In this application, "at least one" refers to one or more, and "multiple" refers to two or more. "And/or" describes the association relationship of the associated object, indicating that there can be three relationships, for example, A and/or B, which can mean: A alone exists, A and B exist at the same time, and B exists alone, where A, B can be singular or plural. In the text description of this application, the character "/" generally indicates that the associated objects before and after are an "or" relationship; in the formula of this application, the character "/" indicates that the associated objects before and after are a kind of "division" Relationship.

It is understandable that the various numerical numbers involved in the embodiments of the present application are only for easy distinction for description, and are not used to limit the scope of the embodiments of the present application. The size of the sequence number of the above processes does not mean the order of execution, and the execution order of each process should be determined by its function and internal logic.

Embodiment 1. A sensing result processing method, characterized in that the first terminal device establishes a side link with the second terminal device, and the method includes:

The first terminal device receives first information from the second terminal device through the side link; the first information is used to instruct the first terminal device to notify the second terminal device of at least A resource

The first terminal device determines at least one first resource in a selection window based on the first information, the first resource is a resource reserved by the second terminal device, and/or the third terminal device reports to the The resource reserved by the second terminal device for sending information;

Determining, by the first terminal device, a third resource according to the at least one first resource, where the third resource is used by the second terminal device to transmit to the first terminal device;

The first terminal device sends second information to the second terminal device, where the second information indicates the third resource.

Embodiment 2. The method according to embodiment 1, wherein the third resource does not include any one of the at least one first resource;

Alternatively, the third resource does not include any resource occupying the first time slot, and the first time slot is a time slot corresponding to the at least one first resource.

Embodiment 3. The method according to embodiment 1, wherein the third resource includes part or all of the at least one first resource.

Embodiment 4. The method according to any one of embodiments 1-3, wherein the determining at least one first resource includes:

The first terminal device receives at least one reservation message, and determines at least one first resource according to the at least one reservation message.

Embodiment 5. The method of embodiment 4, wherein the reservation message for reserving the first resource includes a first priority, and the first priority is a priority for reserving the first resource for transmission ；

The third resource includes a first resource whose first priority is lower than a second priority, where the second priority is a priority of transmission from the second terminal device to the first terminal device.

Embodiment 6. The method according to any one of embodiments 3-5, wherein the third resource includes a non-periodic first resource.

Embodiment 7. The method according to any one of embodiments 3-6, wherein the third resource includes a reservation message corresponding to a reservation message whose signal strength is greater than a first threshold in the reservation message for reserving the first resource. The first resource.

Embodiment 8. The method according to embodiment 7, characterized in that it further comprises:

When the total number of resources included in the third resource satisfies the first preset condition, the first terminal device corresponds to the reservation message whose signal strength is greater than the third threshold in the reservation message for reserving the first resource The first resource is the resource in the third resource, and the third threshold is less than the first threshold; wherein, the first preset condition includes the total number of resources included in the third resource and the total number of resources corresponding to the selection window The ratio of is less than the preset ratio, or the total number of resources included in the third resource is less than the preset number.

Embodiment 9. The method according to embodiment 8, characterized in that, in the reservation message for reserving the first resource, the first terminal device sets the first resource corresponding to the reservation message whose signal strength is greater than a third threshold. After a resource is used as the resource in the third resource, it further includes:

When the third resource satisfies the first preset condition, the first terminal device sets the first resource corresponding to the reservation message whose signal strength is greater than the fourth threshold in the reservation message for reserving the first resource. The resource is used as the resource in the third resource, and the fourth threshold is less than the third threshold;

When the third resource does not meet the first preset condition, the first terminal device determines that the third resource includes the signal strength of the reservation message for reserving the first resource that is greater than a third threshold Part of or all of the resources in the first resource corresponding to the reservation message.

Embodiment 10. The method according to embodiment 7, wherein the third resource further includes a second resource corresponding to at least one reservation message whose signal strength is less than a second threshold in the reservation message for reserving the second resource; The second resource refers to a resource reserved by a terminal device other than the second terminal device, and the second resource does not include a resource reserved by the third terminal device to send information to the second terminal device;

When the third resource satisfies the first preset condition, the first terminal device sets the first resource corresponding to the reservation message whose signal strength is greater than the third threshold in the reservation message for reserving the first resource. Resource, and the second resource corresponding to the reservation message whose signal strength is less than a fourth threshold in the reservation message for the second resource is used as the resource in the third resource, and the third threshold is less than the first threshold The fourth threshold is greater than the second threshold; the first preset condition includes that the ratio of the total number of resources included in the third resource to the total number of resources corresponding to the selection window is less than the preset ratio, or the third resource The total number of resources included is less than the preset number.

Embodiment 11. The method according to embodiment 10, characterized in that, in the reservation message for reserving the first resource, the first terminal device corresponds to the reservation message whose signal strength is greater than a third threshold. A resource, and after the second resource corresponding to the reservation message whose signal strength is less than the fourth threshold in the reservation message for reserving the second resource is used as the resource in the third resource, the method further includes:

When the third resource satisfies the first preset condition, the first terminal device sets the first terminal device corresponding to the reservation message whose signal strength is greater than the fifth threshold in the reservation message for reserving the first resource. Resource, and the second resource corresponding to the reservation message whose signal strength is less than a sixth threshold in the reservation message for reserving the second resource is used as the resource in the third resource, and the fifth threshold is less than the third threshold , The sixth threshold is greater than the fourth threshold;

When the third resource does not meet the first preset condition, the first terminal device determines that the third resource includes the signal strength of the reservation message for reserving the first resource that is greater than a third threshold Some or all of the resources in the first resource corresponding to the reservation message, and some or all of the resources in the second resource corresponding to the reservation message whose signal strength is less than the fourth threshold in the reservation message for reserving the second resource resource.

Embodiment 12. The method according to embodiment 7, wherein the third resource further includes a second resource corresponding to at least one reservation message whose signal strength is less than a second threshold in the reservation message for reserving the second resource; The second resource refers to a resource reserved by a terminal device other than the second terminal device, and the second resource does not include a resource reserved by the third terminal device to send information to the second terminal device;

When the third resource satisfies the first preset condition, the first terminal device sequentially adjusts the first threshold to a sixth threshold and a seventh threshold, the sixth threshold and the seventh threshold Are less than the first threshold, and determine in turn whether the third resource satisfies the first preset condition; wherein, after the first terminal device adjusts the first threshold to a sixth threshold, the The third resource includes part of the resources in the at least one first resource; after the first terminal device adjusts the first threshold to a seventh threshold, the third resource includes the at least one first resource All resources;

After the first terminal device adjusts the first threshold to a sixth threshold, the first terminal device determines that the third resource satisfies the first preset condition, and the first terminal device changes After the first threshold is adjusted to the seventh threshold, and the first terminal device determines that the third resource satisfies the first preset condition, the first terminal device adjusts the second threshold to eighth Threshold, the eighth threshold is greater than the second threshold, and the seventh threshold is adjusted back to the first threshold;

After the first terminal device adjusts the second threshold to an eighth threshold and adjusts the seventh threshold back to the first threshold, the first terminal device determines that the third resource satisfies the In the case of the first preset condition, the first terminal device sequentially adjusts the first threshold to a sixth threshold and a seventh threshold, and sequentially determines whether the third resource meets the first preset condition, until The third resource does not meet the first preset condition.

Embodiment 13. The method according to any one of embodiments 1-12, wherein the first information includes an identifier of the second terminal device, or the second terminal device reports to the first terminal device. At least one of the priority of the device transmission or the size of the resource block that needs to be fed back.

Embodiment 14. The method according to any one of embodiments 1-13, further comprising:

The first terminal device receives data from the second terminal device on a fourth resource, and the fourth resource is determined according to the third resource.

Embodiment 15. A sensing result processing device, characterized in that the device prepares to establish a side link with a second terminal device, and the device includes:

A receiving unit, configured to receive first information from the second terminal device through the side link, where the first information is used to instruct the apparatus to notify at least one resource for the second terminal device;

A processing unit, configured to determine at least one first resource in a selection window based on the first information, the first resource being a resource reserved by the second terminal device, and/or the third terminal device 2. The resource reserved by the terminal device for sending information;

The processing unit is further configured to determine a third resource according to the at least one first resource, where the third resource is used by the second terminal device to transmit to the apparatus;

The sending unit is configured to send second information to the second terminal device, where the second information indicates the third resource.

Embodiment 16. The device according to embodiment 15, wherein the third resource does not include any one of the at least one first resource;

Embodiment 17. The apparatus according to embodiment 15, wherein the third resource includes some or all of the at least one first resource.

Embodiment 18. The device according to any one of embodiments 15-17, wherein when the at least one first resource is determined, the receiving unit is configured to receive at least one reservation message;

The processing unit is configured to determine at least one first resource according to the at least one reservation message.

Embodiment 19. The device of embodiment 18, wherein the reservation message for reserving the first resource includes a first priority, and the first priority is a priority for reserving the first resource for transmission ；

The third resource includes a first resource whose first priority is lower than the priority of transmission from the second terminal device to the first terminal device.

Embodiment 20. The device according to any one of embodiments 17-19, wherein the third resource includes a non-periodic first resource.

Embodiment 21. The device according to any one of embodiments 17-20, wherein the third resource includes a reservation message corresponding to a reservation message whose signal strength is greater than a first threshold in the reservation message for reserving the first resource. The first resource.

Embodiment 22. The device according to embodiment 21, wherein the processing unit is configured to: when the total number of resources included in the third resource meets a first preset condition, reserve the first resource The first resource corresponding to the reservation message whose signal strength is greater than a third threshold in the reservation message is used as the resource in the third resource, and the third threshold is less than the first threshold; wherein, the first preset condition includes The ratio of the total number of resources included in the third resource to the total number of resources corresponding to the selection window is less than the preset ratio, or the total number of resources included in the third resource is less than the preset number.

Embodiment 23. The device according to embodiment 22, wherein the processing unit is configured to: in the reservation message for reserving the first resource, corresponding to a reservation message whose signal strength is greater than a third threshold After the first resource is used as the resource in the third resource, when the third resource satisfies the first preset condition, the signal strength of the reservation message for reserving the first resource is set to be greater than the fourth threshold The first resource corresponding to the reservation message is used as the resource in the third resource, and the fourth threshold is less than the third threshold; when the third resource does not meet the first preset condition, it is determined that the The third resource includes part or all of the resources in the first resource corresponding to the reservation message whose signal strength is greater than the third threshold in the reservation message for reserving the first resource.

Embodiment 24. The device according to embodiment 21, wherein the third resource further includes a second resource corresponding to at least one reservation message whose signal strength is less than a second threshold in the reservation message for reserving the second resource; The second resource refers to a resource reserved by a terminal device other than the second terminal device, and the second resource does not include a resource reserved by the third terminal device to send information to the second terminal device;

The processing unit is configured to: when the third resource satisfies the first preset condition, compare the first resource corresponding to the reservation message whose signal strength is greater than a third threshold in the reservation message for reserving the first resource A resource, and a second resource corresponding to a reservation message whose signal strength is less than a fourth threshold in the reservation message for the second resource is used as a resource in the third resource, and the third threshold is less than the first The fourth threshold is greater than the second threshold; the first preset condition includes that the ratio of the total number of resources included in the third resource to the total number of resources corresponding to the selection window is less than the preset ratio, or the third The total number of resources included in the resource is less than the preset number.

Embodiment 25. The device according to embodiment 24, wherein the processing unit is configured to: in the reservation message for reserving the first resource, corresponding to a reservation message whose signal strength is greater than a third threshold The first resource, and the second resource corresponding to the reservation message whose signal strength is less than the fourth threshold in the reservation message for reserving the second resource is used as the resource in the third resource, when the third resource satisfies all requirements In the case of the first preset condition, the first resource corresponding to the reservation message whose signal strength is greater than the fifth threshold in the reservation message for reserving the first resource and the reservation message for reserving the second resource are combined The second resource corresponding to the reservation message whose signal strength is less than the sixth threshold is used as the resource in the third resource, the fifth threshold is less than the third threshold, and the sixth threshold is greater than the fourth threshold; when When the third resource does not meet the first preset condition, it is determined that the third resource includes the first resource corresponding to the reservation message whose signal strength is greater than the third threshold in the reservation message for reserving the first resource. Part of the resources or all of the resources, and part of or all of the resources of the second resources corresponding to the reservation message whose signal strength is less than the fourth threshold in the reservation message for the reservation of the second resource.

Embodiment 26. The device according to embodiment 21, wherein the third resource further includes a second resource corresponding to at least one reservation message whose signal strength is less than a second threshold in the reservation message for reserving the second resource; The second resource refers to a resource reserved by a terminal device other than the second terminal device, and the second resource does not include a resource reserved by the third terminal device to send information to the second terminal device;

The processing unit is configured to, when the third resource meets the first preset condition, sequentially adjust the first threshold to a sixth threshold and a seventh threshold, the sixth threshold and the seventh threshold The thresholds are all less than the first threshold, and it is determined in turn whether the third resource meets the first preset condition; wherein, after the first threshold is adjusted to the sixth threshold, the third resource includes all Part of the resources in the at least one first resource; after adjusting the first threshold to a seventh threshold, the third resource includes all resources in the at least one first resource; and after adjusting the first threshold After adjusting to the sixth threshold, it is determined that the third resource satisfies the first preset condition, and after the first threshold is adjusted to the seventh threshold, it is determined that the third resource satisfies the first preset Condition, the first terminal device adjusts the second threshold to an eighth threshold, the eighth threshold is greater than the second threshold, and adjusts the seventh threshold back to the first threshold; After the second threshold is adjusted to the eighth threshold, and the seventh threshold is adjusted back to the first threshold, when it is determined that the third resource satisfies the first preset condition, the first threshold is adjusted Adjusting to a sixth threshold and a seventh threshold in sequence, and sequentially determining whether the third resource meets the first preset condition, until the third resource does not meet the first preset condition.

Embodiment 27. The device according to any one of embodiments 15-26, wherein the first information includes an identifier of the second terminal device, or the information transmitted by the second terminal device to the device Priority, or at least one of the resource block sizes to be fed back.

Embodiment 28. The apparatus according to any one of embodiments 15-27, wherein the receiving unit is configured to receive data from the second terminal device on a fourth resource, and the fourth resource The resource is determined based on the third resource.

Embodiment 29. A communication device, characterized by comprising a processor and an interface circuit, the interface circuit being used to receive signals from other communication devices other than the communication device and transmit them to the processor or from The signal of the processor is sent to another communication device other than the communication device, and the processor is used to implement the method according to any one of claims 1 to 14 through a logic circuit or an execution code instruction.

Embodiment 30, a computer-readable storage medium, characterized in that a computer program or instruction is stored in the storage medium, and when the computer program or instruction is executed by a communication device, it implements any of claims 1 to 14 The method described in one item.

Claims

A processing method for sensing results, characterized in that a first terminal device and a second terminal device establish a side link, and the method includes:

The first terminal device receives first information from the second terminal device through the side link, and the first information is used to instruct the first terminal device to notify the second terminal device of at least A resource

The first terminal device determines at least one first resource in a selection window based on the first information, the first resource is a resource reserved by the second terminal device, and/or the third terminal device reports to the The resource reserved by the second terminal device for sending information;

Determining, by the first terminal device, a third resource according to the at least one first resource, where the third resource is used by the second terminal device to transmit to the first terminal device;

The first terminal device sends second information to the second terminal device, where the second information indicates the third resource.
The method according to claim 1, wherein the third resource does not include any one of the at least one first resource;

Alternatively, the third resource does not include any resource occupying the first time slot, and the first time slot is a time slot corresponding to the at least one first resource.
The method according to claim 1, wherein the third resource includes part or all of the at least one first resource.
The method according to any one of claims 1 to 3, wherein the determining at least one first resource comprises:

The first terminal device receives at least one reservation message, and determines at least one first resource according to the at least one reservation message.
The method of claim 4, wherein the reservation message for reserving the first resource includes a first priority, and the first priority is a priority for reserving the first resource for transmission;

The third resource includes a first resource whose first priority is lower than the priority of transmission from the second terminal device to the first terminal device.
The method according to any one of claims 3-5, wherein the third resource comprises a non-periodic first resource.
The method according to any one of claims 3-6, wherein the third resource comprises a first resource corresponding to a reservation message whose signal strength is greater than a first threshold in a reservation message for reserving the first resource.
The method of claim 7, further comprising:

When the total number of resources included in the third resource satisfies the first preset condition, the first terminal device corresponds to the reservation message whose signal strength is greater than the third threshold in the reservation message for reserving the first resource The first resource is the resource in the third resource, and the third threshold is less than the first threshold; wherein, the first preset condition includes the total number of resources included in the third resource and the total number of resources corresponding to the selection window The ratio of is less than the preset ratio, or the total number of resources included in the third resource is less than the preset number.
The method according to any one of claims 1-8, further comprising:

The first terminal device receives data from the second terminal device on a fourth resource, and the fourth resource is determined according to the third resource.
A sensing result processing device, characterized in that the device prepares to establish a side link with a second terminal device, and the device includes:

A receiving unit, configured to receive first information from the second terminal device through the side link, where the first information is used to instruct the apparatus to notify at least one resource for the second terminal device;

A processing unit, configured to determine at least one first resource in a selection window based on the first information, the first resource being a resource reserved by the second terminal device, and/or the third terminal device 2. The resource reserved by the terminal device for sending information;

The processing unit is further configured to determine a third resource according to the at least one first resource, where the third resource is used by the second terminal device to transmit to the apparatus;

The sending unit is configured to send second information to the second terminal device, where the second information indicates the third resource.
The apparatus according to claim 10, wherein the third resource does not include any one of the at least one first resource;

Alternatively, the third resource does not include any resource occupying the first time slot, and the first time slot is a time slot corresponding to the at least one first resource.
The apparatus according to claim 11, wherein the third resource includes part or all of the at least one first resource.
The device according to any one of claims 10-12, wherein when the at least one first resource is determined, the receiving unit is configured to receive at least one reservation message;

The processing unit is configured to determine at least one first resource according to the at least one reservation message.
The apparatus according to claim 13, wherein the reservation message for reserving the first resource includes a first priority, and the first priority is a priority for reserving transmission with the first resource;

The third resource includes a first resource whose first priority is lower than the priority of transmission from the second terminal device to the first terminal device.
The apparatus according to any one of claims 12-14, wherein the third resource comprises a non-periodic first resource.
15. The apparatus according to any one of claims 12-15, wherein the third resource comprises a first resource corresponding to a reservation message whose signal strength is greater than a first threshold in a reservation message for reserving the first resource.
The apparatus according to claim 16, wherein the processing unit is configured to: when the total number of resources included in the third resource meets a first preset condition, add a reservation message for reserving the first resource The first resource corresponding to the reservation message whose signal strength is greater than a third threshold is used as the resource in the third resource, and the third threshold is less than the first threshold; wherein, the first preset condition includes the third The ratio of the total number of resources included in the resource to the total number of resources corresponding to the selection window is less than the preset ratio, or the total number of resources included in the third resource is less than the preset number.
The apparatus according to any one of claims 10-17, wherein the receiving unit is configured to receive data from the second terminal device on a fourth resource, and the fourth resource is based on the The third resource is determined.
A communication device, characterized by comprising a processor and an interface circuit, the interface circuit is used to receive signals from other communication devices other than the communication device and transmit them to the processor or transfer signals from the processor The signal of is sent to another communication device other than the communication device, and the processor is used to implement the method according to any one of claims 1 to 9 through a logic circuit or an execution code instruction.
A computer-readable storage medium, characterized in that a computer program or instruction is stored in the storage medium, and when the computer program or instruction is executed by a communication device, the computer program or instruction is implemented as described in any one of claims 1 to 9 Methods.