WO2024011468A1

WO2024011468A1 - Link determination method and apparatus, and storage medium and chip

Info

Publication number: WO2024011468A1
Application number: PCT/CN2022/105568
Authority: WO
Inventors: 杨星
Original assignee: 北京小米移动软件有限公司
Priority date: 2022-07-13
Filing date: 2022-07-13
Publication date: 2024-01-18
Also published as: CN115336378A

Abstract

The present disclosure relates to a link determination method and apparatus, and a storage medium and a chip. The method comprises: when it is determined that a sidelink and a non-sidelink of a first terminal device cannot be sent at the same time, acquiring a resource type which is used by the sidelink; and determining, from the sidelink and the non-sidelink and according to the resource type, a target link which is used for performing communication. In this way, a target link can be selected according to a resource type, such that the problem of sidelink transmission failure caused by irrational link selection can be prevented.

Description

Link determination method, device, storage medium and chip

Technical field

The present disclosure relates to the field of communication technology, and specifically, to a link determination method, device, storage medium and chip.

Background technique

With the development of wireless communication technology, in order to achieve direct communication between terminal devices, 3GPP (3rd Generation Partnership Project, the third generation partner project) has defined Sidelink (can be called a direct link or a side link) )way of communication. For example, a typical application scenario of Sidelink communication is Vehicle-to-Everything (V2X). In the Internet of Vehicles, each vehicle can be used as a terminal device, and terminal devices can communicate with each other through a direct link Sidelink, such as direct connection for information transmission, thereby effectively reducing communication delay.

Due to the introduction of Sidelink, the above-mentioned terminal equipment may have data to be sent on multiple links. For example, there may be data to be sent on both direct links and indirect links. In the related technology, when the direct link and the indirect link cannot transmit at the same time, there is a problem that unreasonable link selection causes the direct link to fail to transmit.

Contents of the invention

In order to overcome the above problems existing in related technologies, the present disclosure provides a link determination method, device, storage medium and chip.

According to a first aspect of an embodiment of the present disclosure, a link determination method is provided, applied to a first terminal device, and the method includes:

When it is determined that the direct link Sidelink and the indirect link of the first terminal device cannot be transmitted at the same time, determine the resource type corresponding to the direct link;

A target link for communication is determined from the directly connected link and the indirect link according to the resource type.

According to a second aspect of an embodiment of the present disclosure, a link determination method is provided, applied to access network equipment, and the method includes:

Determine the first parameter;

Send the first parameter to the first terminal device; wherein the first parameter is used to determine the first link selection threshold when the resource type used by the direct link Sidelink is an unauthorized resource to indicate the The first terminal device determines a resource link correspondence according to the first parameter, determines a target link selection threshold corresponding to the resource type of the direct link according to the resource link correspondence, and determines a target link selection threshold according to the target The link selection threshold determines the target link used for communication.

According to a third aspect of an embodiment of the present disclosure, a link determination device is provided, applied to a first terminal device, and the device includes:

The first determination module is configured to determine the resource type corresponding to the direct link when it is determined that the direct link Sidelink and the indirect link of the first terminal device cannot be transmitted at the same time;

The second determination module is configured to determine a target link for communication from the direct link and the indirect link according to the resource type.

According to a fourth aspect of an embodiment of the present disclosure, a link determination device is provided, applied to access network equipment, and the device includes:

a third determination module configured to determine the first parameter;

The first sending module is configured to send the first parameter to the first terminal device; wherein the first parameter is used to determine the first parameter when the resource type used by the direct link Sidelink is an unauthorized resource. A link selection threshold to instruct the first terminal device to determine the resource link correspondence relationship according to the first parameter, and to determine the target link corresponding to the resource type of the direct link according to the resource link correspondence relationship. A threshold is selected, and a target link for communication is determined according to the target link selection threshold.

According to a fifth aspect of the embodiment of the present disclosure, a link determination device is provided, including:

processor;

Memory used to store instructions executable by the processor;

Wherein, the processor is configured to execute the steps of the link determination method provided in the first aspect of the present disclosure.

According to a sixth aspect of the embodiment of the present disclosure, a link determination device is provided, including:

processor;

Memory used to store instructions executable by the processor;

Wherein, the processor is configured to execute the steps of the link determination method provided in the second aspect of the present disclosure.

According to a seventh aspect of the embodiment of the present disclosure, there is provided a computer-readable storage medium on which computer program instructions are stored. When the computer program instructions are executed by a processor, the link determination method provided by the first aspect of the present disclosure is implemented. step.

According to an eighth aspect of the embodiment of the present disclosure, there is provided a computer-readable storage medium on which computer program instructions are stored. When the computer program instructions are executed by a processor, the link determination method provided by the second aspect of the present disclosure is implemented. step.

According to a ninth aspect of the embodiment of the disclosure, a chip is provided, including: a processor and an interface; the processor is configured to read instructions to execute the steps of the link determination method provided in the first aspect of the disclosure,

According to a tenth aspect of an embodiment of the present disclosure, a chip is provided, including: a processor and an interface; the processor is configured to read instructions to execute the steps of the link determination method provided in the second aspect of the present disclosure.

The technical solution provided by the embodiments of the present disclosure may include the following beneficial effects: when it is determined that the direct link Sidelink and the indirect link of the first terminal device cannot be sent at the same time, obtain the resources used by the direct link type; and determine the target link for communication from direct links and indirect links based on the resource type. In this way, the target link can be selected based on the resource type, thereby avoiding the problem of unreasonable link selection leading to direct link transmission failure.

It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only, and do not limit the present disclosure.

Description of drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description, serve to explain the principles of the disclosure.

FIG. 1 is a schematic diagram of a communication system according to an exemplary embodiment.

Figure 2 is a flowchart of a link determination method according to an exemplary embodiment.

Figure 3 is a flowchart of a link determination method according to an exemplary embodiment.

Figure 4 is a flowchart of a link determination method according to an exemplary embodiment.

Figure 5 is a flowchart of a link determination method according to an exemplary embodiment.

Figure 6 is a flowchart of a link determination method according to an exemplary embodiment.

Figure 7 is a block diagram of a link determination device according to an exemplary embodiment.

Figure 8 is a block diagram of a link determination device according to an exemplary embodiment.

Figure 9 is a block diagram of a link determination device according to an exemplary embodiment.

Figure 10 is a block diagram of a link determination device according to an exemplary embodiment.

Figure 11 is a block diagram of a link determination device according to an exemplary embodiment.

Detailed ways

Exemplary embodiments will be described in detail herein, examples of which are illustrated in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with aspects of the disclosure as detailed in the appended claims.

It should be noted that all actions to obtain signals, information or data in this disclosure are performed under the premise of complying with the corresponding data protection regulations and policies of the country where the location is located, and with authorization from the owner of the corresponding device.

In the description of the present disclosure, terms such as “first”, “second”, etc. are used to distinguish similar objects and do not necessarily mean a specific order or sequence. In addition, in the description with reference to the drawings, the same reference numerals in different drawings represent the same elements unless otherwise stated.

In the description of this disclosure, unless otherwise stated, "plurality" refers to two or more than two, and other quantifiers are similar; "at least one of the following", "one or more" "Item (items)" or similar expressions refer to any combination of these items (items), including any combination of single items (items) or plural items (items). For example, one or more items in a, b, or c can mean: a, b, c, a-b, a-c, b-c, or a-b-c, where a, b, c can be single, It can also be multiple; "and/or" is an association relationship that describes associated objects, indicating that there can be three relationships, for example, A and/or B, which can mean: A exists alone, A and B exist simultaneously, alone There are three cases of B, where A and B can be singular or plural.

Although operations are described in a specific order in the drawings in the embodiments of the present disclosure, this should not be construed as requiring that these operations be performed in the specific order shown or in serial order, or that all of the operations shown are performed. Operate to get the desired results. In certain circumstances, multitasking and parallel processing may be advantageous.

After the introduction of Sidelink communication, the terminal device may have multiple links (for example, direct links and indirect links) that need to send data at the same time. In some scenarios (such as resource conflicts, insufficient power, etc.), the direct link and the indirect link (such as the uplink) cannot transmit at the same time. In this case, it is necessary to determine which link should be used first for transmission. If there is data to be sent on both the direct link and the indirect link but cannot be sent at the same time, in related technologies, one link can be selected for sending by comparing logical channel priorities, but there is a problem in that the target link cannot be selected reasonably. Path problems may cause the direct link to fail to send, affecting the communication quality between terminal devices.

In order to solve the above problems, the present disclosure provides a link determination method, device, storage medium and chip.

The following first introduces the implementation environment of the embodiment of the present disclosure.

The technical solutions of the embodiments of this application can be applied to various communication systems. The communication system may include one or more of a 4G (the 4th Generation, fourth generation) communication system, a 5G (the 5th Generation, the fifth generation) communication system, and other future wireless communication systems (such as 6G). The communication system may also include a Public Land Mobile Network (PLMN) network, a Device-to-Device (D2D) communication system, a Machine to Machine (M2M) communication system, One or more of the Internet of Things (IoT) communication system, Vehicle-to-Everything (V2X) communication system or other communication systems.

Figure 1 is a schematic diagram of a communication system according to an exemplary embodiment. As shown in Figure 1, the communication system may include a terminal device 150 and an access network device 160. The communication system can be used to support 4G network access technology, such as Long Term Evolution (LTE) access technology, or 5G network access technology, such as New Radio Access Technology (New RAT), Or, other future wireless communication technologies. It should be noted that in this communication system, the number of access network equipment and terminal equipment can be one or more. The number of access network equipment and terminal equipment in the communication system shown in Figure 1 is only an example of adaptability. This disclosure does not limit this.

The access network equipment in Figure 1 can be used to support terminal access. For example, the access network equipment can be an evolutionary Node B (eNB or eNodeB) in LTE; the access network equipment can also be a 5G network The next generation base station (the next Generation Node B, gNB or gNodeB); the access network equipment can also be the wireless access network (NG Radio Access Network, NG-RAN) equipment in the 5G network; the access network equipment It can also be the base station, broadband network service gateway (Broadband Network Gateway, BNG), aggregation switch or non-3GPP access equipment in the future evolved Public Land Mobile Network (PLMN). Optionally, the access network equipment in the embodiment of the present disclosure may include various forms of base stations, such as: macro base stations, micro base stations (also called small stations), relay stations, access points, 5G base stations or future base stations, Satellites, transmission points (Transmitting and Receiving Point, TRP), transmitting points (TP), mobile switching centers, and device-to-device (D2D), machine-to-machine (M2M) ), Internet of Things (IoT), Vehicle-to-Everything (V2X) or other devices that perform base station functions in communications, etc., the embodiments of this disclosure do not specifically limit this. For convenience of description, in all embodiments of the present disclosure, devices that provide wireless communication functions for terminal equipment are collectively referred to as access network equipment or base stations.

The terminal device in Figure 1 can be an electronic device that provides voice or data connectivity. For example, the terminal device can also be called user equipment (User Equipment, UE), subscriber unit (Subscriber Unit), mobile station (Mobile Station). ), Station, Terminal, etc. For example, the terminal device may include a smartphone, a smart wearable device, a smart speaker, a smart tablet, a wireless modem, a wireless local loop (Wireless Local Loop, WLL) station, a PDA (Personal Digital Assistant, personal digital assistant) ), CPE (Customer Premise Equipment, customer terminal equipment), etc. With the development of wireless communication technology, devices that can access the communication system, can communicate with the access network equipment of the communication system, can communicate with other objects through the communication system, or two or more devices can directly communicate with each other. The communicating devices can all be terminal devices in the embodiments of the present disclosure; for example, terminals and cars in smart transportation, household equipment in smart homes, power meter reading instruments, voltage monitoring instruments, environmental monitoring instruments, intelligent Video monitoring instruments, cash registers, etc. in security networks. In the embodiment of the present disclosure, the terminal device can communicate with the access network device. Communication between multiple terminal devices is also possible. The terminal device may be static or fixed, or may be mobile, which is not limited in this disclosure.

In some embodiments, the terminal device in Figure 1 may include a first terminal device 151 and a second terminal device 152, and the first terminal device 151 and the second terminal device 152 may communicate through a direct link Sidelink. The method of Sidelink communication between the first terminal device 151 and the second terminal device 152 may include any one or more of unicast, multicast or broadcast. It should be noted that in FIG. 1 , there may be one or more first terminal devices, and there may also be one or more second terminal devices, and the present disclosure does not limit this.

The first terminal device may communicate with the access network device through an indirect link, and the indirect link may include an uplink and/or a downlink between the first terminal device and the access network device. For example, the indirect link may include PRACH (Physical Random Access Channel, physical random access channel), PUCCH (Physical Uplink Control Channel, physical uplink control channel), PUSCH (Physical Uplink Shared Channel, physical uplink shared channel) , PDSCH (Physical Downlink Shared Channel, physical downlink shared channel), PDCCH (Physical Downlink Control Channel, physical downlink control channel) and other links.

Figure 2 shows a link determination method according to an exemplary embodiment, which can be applied to a terminal device in the above communication system, such as a first terminal device. As shown in Figure 2, the method may include:

S201. When the first terminal device determines that the direct link Sidelink and the indirect link of the first terminal device cannot be sent at the same time, determine the resource type corresponding to the direct link.

For example, the resource type used by the direct link may include one or more of authorized resources and unauthorized resources. For example, the resource type is authorized resources to indicate that the first terminal device can use ITU (International Telecommunication Union, International Telecommunications Union) or spectrum resources authorized by a specific country and region for Sidelink transmission. The resource type is unlicensed resource, which is used to indicate that the first terminal device can use unlicensed spectrum resources for Sidelink transmission (Sidelink Unlicense, Sidelink-U). The unlicensed spectrum resources may also be called shared spectrum resources.

In some embodiments, the terminal device may determine the resource type according to the target resource currently used by the direct link. For example, when the frequency of the target resource of the direct link is within a frequency corresponding to an unlicensed spectrum resource, the resource type may be determined to be an unlicensed resource.

It should be noted that the target resource currently used by the direct link can be obtained by the terminal device requesting the access network device; it can also be determined by the terminal device itself. For example, when the bandwidth of the authorized frequency resource of the terminal is limited, the terminal At least one unlicensed frequency resource may be determined as the target resource.

In some embodiments, the indirect link may be an uplink, and the first device terminal may send data to the base station through the uplink. Data to be sent on both the direct link and the indirect link needs to be sent at the same time. However, when the direct link and the indirect link cannot transmit at the same time due to specific reasons, the terminal device can determine that the direct link and the indirect link cannot transmit at the same time. The specific reason may include one or more of: frequency resource conflict, insufficient transmit power of the terminal device, etc., which is not limited in this disclosure.

S202. The first terminal device determines a target link for communication from the direct link and the indirect link according to the resource type.

In this step, different methods can be used to determine the target link according to different resource types.

In some embodiments, when the resource type is an unauthorized resource, the directly connected link may be preferentially used as the target link to send data.

It should be noted that when using unauthorized resources for Sidelink transmission, multiple terminal devices will monitor the channel to determine whether the link resources (such as frequency resources and channel resources) are idle. If the terminal device discovers through channel monitoring that If certain link resources are not used by any terminal for transmission within a certain period of time, it can be determined that the link resource is idle, and the link resource can be occupied for Sidelink transmission. Therefore, when the resource type is an unauthorized resource and the direct link and the indirect link cannot transmit at the same time, if the indirect link is preferred, the resources of the direct link will become idle. There is a certain probability that the resources of the direct link will be preempted by other terminal devices, causing the direct link to fail to send.

Through the method in this embodiment, when the resource type is an unauthorized resource, the direct link is preferentially used as the target link, which can avoid the unauthorized resources of the direct link being idle for a long time and being used by other terminals. Device preemption, thereby improving the reliability of direct link transmission.

In other embodiments, when the resource type is an authorized resource, link selection can be performed according to the method in the related art. For example, a directly connected link or an indirectly connected link can be selected as the target link based on the principle of fairness. For example, the direct link and the indirect link can be used in turn according to time; for another example, the target link can be randomly selected from the direct link or the indirect link.

Using the above method, when it is determined that the direct link Sidelink and the indirect link of the first terminal device cannot be transmitted at the same time, the resource type used by the direct link is obtained; and based on the resource type, the resource type is obtained from the direct link. Determine the target link for communication among the routes and indirect links. In this way, the target link can be selected based on the resource type, thereby avoiding the problem of unreasonable link selection leading to direct link transmission failure.

Figure 3 illustrates a link determination method according to an exemplary embodiment. As shown in Figure 3, the method may include:

S301. When the first terminal device determines that the direct link Sidelink and the indirect link of the first terminal device cannot be sent at the same time, determine the resource type corresponding to the direct link.

S302. The first terminal device determines the target link selection threshold according to the resource type of the direct link.

For example, the target link selection threshold corresponding to the resource type can be determined according to the resource link correspondence relationship. The resource link correspondence includes a correspondence between the resource type of the direct link and the link selection threshold.

In some embodiments, the resource link correspondence relationship may include a corresponding first link selection threshold when the resource type of the direct link is an unauthorized resource.

In other embodiments, the resource link correspondence relationship may include a corresponding second link selection threshold when the resource type of the direct link is an authorized resource.

In some embodiments, different resource types may correspond to different link selection thresholds. For example, the link selection thresholds corresponding to authorized resources and unauthorized resources may be different, that is, the first link selection threshold and the second link selection threshold may be different.

In other embodiments, different resource types may also correspond to the same link selection threshold. For example, the link selection thresholds corresponding to authorized resources and unauthorized resources may also be the same, that is, the above-mentioned first link selection threshold and the second link selection threshold may be the same.

In some embodiments of the present disclosure, when the resource type includes unlicensed resources, the first link selection threshold corresponding to the unlicensed resource can be used as the target link selection threshold according to the resource link correspondence. .

For example, when the resource type is an unauthorized resource, the first link selection threshold corresponding to the unauthorized resource may be used as the target link selection threshold.

In some embodiments, the target link selection threshold may include a target direct link priority threshold and a target indirect link priority threshold; the first link selection threshold may also include the first direct link priority level threshold and the first indirect link priority threshold; the second link selection threshold may also include the second direct link priority threshold and the second indirect link priority threshold.

In this way, different target link selection thresholds are determined according to different resource types, and flexible target link selection can be achieved.

In some embodiments, the first direct link priority threshold may be lower than the second direct link priority threshold.

In other embodiments, the first indirect link priority threshold may be higher than the second indirect link priority threshold.

In some other embodiments, the priority threshold of the first direct link may be lower than the priority threshold of the second direct link, and the priority threshold of the first indirect link may be higher than the second indirect link priority threshold. Link priority threshold.

Through the above threshold, the first terminal device can be caused to preferentially select the direct link for transmission when the resource type of the direct link is an unauthorized resource.

For example, the first terminal device may first obtain the first logical channel priority corresponding to the direct link and the second logical channel priority corresponding to the indirect link; and then when the first logical channel priority is higher When the priority threshold of the target direct link is lower than the priority threshold of the target indirect link, and the priority of the second logical channel is lower than the priority threshold of the target indirect link, the direct link is used as the target link, that is, the direct link is prioritized. Road sent.

In this way, when the priority threshold of the first direct link is lower than the priority threshold of the second direct link, and/or, the priority threshold of the first indirect link is higher than the priority threshold of the second indirect link. In the case of , the first terminal device can be caused to preferentially select the direct link for transmission when using unauthorized resources.

Through the above method, when the direct link uses unauthorized resources and the direct link and the indirect link cannot transmit at the same time, the direct link can be selected first for transmission to avoid non-authorized resources sent by the direct link. The direct link transmission fails due to being preempted by other terminals due to idle authorized resources.

In other embodiments of the present disclosure, when the resource type is an unlicensed resource and the first terminal device is not the last terminal within the channel occupancy time (COT), the unlicensed resource can be The corresponding first link selection threshold is used as the target link selection threshold.

It should be noted that when the terminal device performs sidelink transmission on unlicensed resources (such as unlicensed spectrum resources), it can select the unlicensed resource for transmission through the LBT (Listen Before Talk) mechanism. The time the terminal device uses the authorized resources for sending is the channel occupancy time COT. The terminal device can also share its own channel occupancy time COT with other terminal devices for Sidelink transmission. Multiple terminals sharing the same channel occupancy time COT can perform Sidelink transmission in the negotiated order.

If the first terminal device is not the last sending terminal sharing the same channel occupancy time COT, and the first terminal device is interrupted in sending, other terminal devices that do not share the COT may preempt the COT, resulting in sharing the COT and sending No terminal device with a time after the first terminal device can perform Sidelink transmission. Therefore, in this embodiment, a separate target link selection threshold can be set for this scenario, so that the first terminal device preferentially uses the direct link Sidelink for transmission.

For example, when the resource type is an unauthorized resource, the first link selection threshold corresponding to the unauthorized resource may be used as the target link selection threshold. It should be noted that the first link selection threshold corresponding to the unlicensed resource can cause the first terminal device to preferentially select the direct link for transmission.

In some embodiments, the target link selection threshold may include a target direct link priority threshold and a target indirect link priority threshold; the first link selection threshold may also include the first direct link priority level threshold and the first indirect link priority threshold.

In some other embodiments of the present disclosure, when the resource type is an authorized resource, the second link selection threshold corresponding to the authorized resource may be used as the target link selection threshold according to the resource link correspondence.

The second link selection threshold and the first link selection threshold may be the same or different. In this way, different link selection thresholds can be flexibly set for different resource types, thereby enabling flexible resource allocation strategies.

It should be noted that if the resource type currently used by the direct link of the first terminal device includes both unauthorized resources and authorized resources, the target can also be determined in the same manner as in the case where the resource type is an unauthorized resource in the embodiment of the present disclosure. resource.

In some embodiments of the present disclosure, the method for determining the above-mentioned resource link correspondence may include one or more of the following methods:

Method 1: Receive the first parameter sent by the access network device; determine the resource link correspondence relationship based on the first parameter.

In some embodiments, the first parameter may be used to instruct the first terminal device to determine the first link selection threshold when the resource type is an unauthorized resource.

For example, the first parameter may include a first link selection threshold corresponding to the unauthorized resource.

In other embodiments, in the case where the first link selection threshold includes a first direct link priority threshold and a first indirect link priority threshold, the first parameter may include a method for determining the The second parameter of the first direct link priority threshold, and the third parameter used to determine the first indirect link priority threshold.

For example, the first parameter may include: the corresponding first direct link priority threshold and the first indirect link priority threshold when the resource type is an unauthorized resource.

In some other embodiments, the first parameter may also be used to instruct the first terminal device to determine the first link selection threshold when the resource type is an unauthorized resource, and the first link selection threshold when the resource type is an authorized resource. Second link selection threshold.

For example, the first parameter may include a first link selection threshold corresponding to unauthorized resources and a second link selection threshold corresponding to authorized resources.

In some embodiments, the first link selection threshold includes a first direct link priority threshold and a first indirect link priority threshold, and the second link selection threshold includes a second direct link priority threshold. In the case of a link priority threshold and a second indirect link priority threshold, the first parameter may include a fourth parameter used to determine the first direct link priority threshold, a fourth parameter used to determine the first indirect link priority threshold, and a fourth parameter used to determine the first indirect link priority threshold. The fifth parameter of the connected link priority threshold, the sixth parameter used to determine the second directly connected link priority threshold, and the seventh parameter used to determine the second indirect link priority threshold.

For example, the first parameter may include: the corresponding first direct link priority threshold and the first indirect link priority threshold when the resource type is an unauthorized resource, and the corresponding first direct link priority threshold when the resource type is an authorized resource. The second directly connected link priority threshold and the second indirect link priority threshold.

Method 2: The first terminal device determines the resource link correspondence relationship according to the preset parameters.

In some embodiments, the preset parameters may include a first link selection threshold corresponding to a preconfigured unauthorized resource.

In other embodiments, the preset parameters may include: a first link selection threshold corresponding to preconfigured unauthorized resources, and a second link selection threshold corresponding to preconfigured authorized resources.

It should be noted that the first terminal device can also combine the above-mentioned method 1 and method 2 to determine the above-mentioned resource link correspondence. For example, the first terminal device receives the first parameter sent by the access network device. , the resource link correspondence relationship can be determined based on the first parameter; conversely, when the first terminal device does not receive the first parameter sent by the access network device or the received first parameter does not meet the preset parameter conditions, The resource link correspondence can be determined based on preset parameters.

S303. The first terminal device determines the target link according to the target link selection threshold.

The target link selection threshold may include a target direct link priority threshold and a target indirect link priority threshold; thus, in this step, the first logical channel priority corresponding to the direct link can be first obtained , and the second logical channel priority corresponding to the indirect link; then according to the first logical channel priority, the second logical channel priority, the target direct link priority threshold and the target indirect link priority level threshold to determine the target link.

For example, the first terminal device may determine the target link based on the relationship between the priority of the first logical channel and the priority threshold of the target direct link, and the relationship between the second logical channel and the priority threshold of the target indirect link. , that is, determine whether the direct link Sidelink is sent first, or the indirect link is sent first.

In some embodiments, the first terminal device may use the direct link as the target link when the first preset condition is met, that is, the direct link Sidelink is sent first.

In addition, the first terminal device may also use the indirect link as the target link when the above-mentioned first preset condition is not satisfied, that is, priority is given to transmitting on the indirect link (for example, uplink transmission).

The first preset condition may include that the first logical channel priority is higher than the target direct link priority threshold, and the second logical channel priority is lower than the target indirect link priority threshold.

It should be noted that the smaller the value of the priority level, the higher the priority level may be defined, and the larger the value of the priority level, the higher the priority level may be defined. This disclosure does not limit this.

For example, if a smaller value of the priority indicates a higher priority, the first preset condition may include: the value of the first logical channel priority is less than the value of the target direct link priority threshold, and The value of the second logical channel priority is greater than the value of the target indirect link priority threshold.

In other embodiments, the first terminal device may use the indirect link as the target link when the second preset condition is met, that is, the indirect link is sent first; if the second preset condition is not met, Under the second preset condition, the directly connected link is used as the target link, that is, the directly connected link is sent first.

The second preset condition may include that the first logical channel priority is lower than the target direct link priority threshold, and the second logical channel priority is higher than the target indirect link priority threshold.

In this way, through this method, the target link can be determined more flexibly based on the logical channel priority and link priority threshold.

It should be noted that the above-mentioned target link selection threshold may include the target direct link priority threshold and the target indirect link priority threshold; the above-mentioned first link selection threshold may also include the first direct link priority threshold and the first indirect link priority threshold; the above-mentioned second link selection threshold may also include the second direct link priority threshold and the second indirect link priority threshold.

Using the above method, when the direct link uses unauthorized resources and the direct link and the indirect link cannot send at the same time, the direct link can be given priority for sending to avoid non-authorized resources sent by the direct link. The direct link transmission fails due to being preempted by other terminals due to idle authorized resources.

In some embodiments, the first logical channel priority may be the priority of a logical channel with the highest priority among at least one logical channel corresponding to the direct link in which data to be transmitted exists.

For example, if the direct link of the first terminal device includes N logical channels with data to be transmitted, the priority of the logical channel with the highest priority among the N logical channels can be used as the priority of the first logical channel. class.

In other embodiments, the first logical channel priority may be the priority of a logical channel with the lowest priority among at least one logical channel corresponding to the direct link in which data to be transmitted exists.

In some other embodiments, the first logical channel priority may be an average value of priorities of at least one logical channel corresponding to the direct link in which data to be transmitted exists.

In some embodiments, the second logical channel priority may be the priority of a logical channel with the highest priority among at least one logical channel corresponding to the indirect link in which data to be transmitted exists.

In other embodiments, the second logical channel priority may be the priority of a logical channel with the lowest priority among at least one logical channel corresponding to the indirect link in which data to be transmitted exists.

In some other embodiments, the second logical channel priority may be an average value of the priorities of at least one logical channel corresponding to the indirect link in which data to be transmitted exists.

In this way, the above logical channel priorities can be flexibly determined according to needs.

In some embodiments of the present disclosure, the above-mentioned first logical channel priority may be determined through the following steps:

First, if the resource type is an unlicensed resource, at least one second terminal device sharing the same channel occupancy time COT with the first terminal device is determined.

In some embodiments, the second terminal device may be a terminal device that shares the same channel occupancy time COT with the first terminal device and does not use the channel occupancy time COT for data transmission.

In other embodiments, the second terminal device may be all terminal devices that share the same channel occupancy time COT with the first terminal device.

Then, determine the priority of the first logical channel according to at least one logical channel corresponding to the direct link between the first terminal device and the second terminal device.

In some embodiments, the priority of the logical channel with the highest priority among at least one logical channel corresponding to the direct link between the first terminal device and the second terminal device in which data to be transmitted may be used as the first logical channel. Channel priority.

For example, the direct link of the first terminal device includes N logical channels on which data needs to be transmitted, and the number of the second terminal device is K. The direct link of each second terminal device includes M logical channels on which data needs to be transmitted. Logical channels for transmitting data, then there are a total of (N+K*M) logical channels with data to be transmitted. The priority of the logical channel with the highest priority among these (N+K*M) logical channels can be used as the priority of the logical channel. First logical channel priority.

In other embodiments, the priority of the logical channel with the lowest priority among at least one logical channel corresponding to the direct link between the first terminal device and the second terminal device in which data to be transmitted may be used as the first Logical channel priority.

In some other embodiments, the average value of the priorities of at least one logical channel corresponding to the direct link of the first terminal device and the second terminal device in which data to be transmitted may be used as the first logical channel priority. .

Using the above method, the logical channel priorities corresponding to the logical channels of multiple terminal devices sharing the same COT (such as the above-mentioned first terminal device and the second terminal device) can be taken into consideration, and the maximum value, minimum value or priority among them can be selected. The average value is used as the above-mentioned first logical channel priority, and is further determined based on the first logical channel priority, the target direct link priority threshold, the second logical channel priority and the target indirect link priority threshold. target link. Therefore, multiple terminal devices sharing the same COT are considered when determining the target link, and the target link can be determined more comprehensively and accurately to avoid unauthorized resources corresponding to the direct link from being occupied by other terminal devices.

In some embodiments of the present disclosure, the first terminal device may receive the fifth logical channel priority sent by the second terminal device. The fifth logical channel priority represents the priority of at least one logical channel corresponding to the direct link of the second terminal device in which data to be transmitted exists. For example, the fifth logical channel may be the priority of a logical channel with the highest priority among at least one logical channel corresponding to the direct link of the second terminal device in which data to be transmitted exists.

The second terminal device may be a terminal device that shares the same channel occupancy time COT with the first terminal device. The second terminal device may also be a terminal device that shares the same channel occupancy time COT with the first terminal device and does not use the channel occupancy time COT for data transmission.

For example, among multiple terminal devices sharing the same COT, any terminal device can send its respective logical channel priority to other terminal devices.

It should be noted that the terminal device can pass Sidelink RRC (Sidelink Radio Resource Control, direct link radio resource control) message, Sidelink MAC CE (Sidelink Medium Access Control Control Element, direct link media access control unit) and One or more of the SCI (Sidelink Control Information, direct link control indication) sends the above logical channel priority. The end device may also receive the above logical channel priority through one or more of Sidelink RRC messages, Sidelink MAC CE and SCI.

In other embodiments of the present disclosure, the first terminal device can receive resource location information sent by the second terminal device, and the resource location information can be used to characterize the second terminal device's data transmission through the channel occupancy time COT. location information.

In some embodiments, the resource location information may represent the sorting position of the second terminal device for data transmission through the COT.

In other embodiments, the resource location information may include one or more of time location information and frequency location information.

In this way, the first terminal device can determine, based on the resource location information, at least one second terminal device that shares the same channel occupancy time COT with the first terminal device and does not use the channel occupancy time COT for data transmission.

Figure 4 illustrates a link determination method according to an exemplary embodiment. As shown in Figure 4, the method may include:

S401. When the first terminal device determines that the direct link Sidelink and the indirect link of the first terminal device cannot be sent at the same time, determine the resource type corresponding to the direct link.

S402. If the resource type is an unlicensed resource, determine at least one second terminal device that shares the same channel occupancy time COT with the first terminal device.

S403. Determine a third logical channel priority based on at least one logical channel corresponding to the direct link between the first terminal device and the second terminal device.

In some embodiments, the priority of the logical channel with the highest priority among at least one logical channel corresponding to the direct link between the first terminal device and the second terminal device in which data to be transmitted may be used as the third logical channel. Channel priority.

In other embodiments, the priority of the logical channel with the lowest priority among the at least one logical channel corresponding to the direct link between the first terminal device and the second terminal device in which data to be transmitted may be used as the third Logical channel priority.

In some other embodiments, the average value of the priorities of at least one logical channel corresponding to the direct link of the first terminal device and the second terminal device in which data to be transmitted may be used as the third logical channel priority. .

S404. Determine a fourth logical channel priority according to at least one logical channel corresponding to the indirect link of the first terminal device.

In some embodiments, the fourth logical channel priority may be the priority of a logical channel with the highest priority among at least one logical channel corresponding to the indirect link in which data to be transmitted exists.

In other embodiments, the fourth logical channel priority may be the priority of a logical channel with the lowest priority among at least one logical channel corresponding to the indirect link in which data to be transmitted exists.

In some other embodiments, the fourth logical channel priority may be an average value of the priorities of at least one logical channel corresponding to the indirect link in which data to be transmitted exists.

S405. Determine the target link according to the third logical channel priority and the fourth logical channel priority.

In this step, there can be multiple ways to determine the target link, for example:

In some embodiments, when the third logical channel priority is greater than or equal to the fourth logical channel priority, the directly connected link Sidelink may be used as the target link.

In other embodiments, when the third logical channel priority is lower than the fourth logical channel priority, the indirect link may be used as the target link.

In other embodiments, the direct link priority threshold and the indirect link priority threshold may be determined first; and then, based on the third logical channel priority, the fourth logical channel priority, and the direct link priority, Threshold and indirect link priority threshold to determine the target link.

For example, the first terminal device may determine the target link based on the relationship between the third logical channel priority and the priority threshold of the direct link, and the relationship between the fourth logical channel and the priority threshold of the indirect link, or It is to determine whether to give priority to the direct link Sidelink for sending, or to give priority to the indirect link for sending.

In some embodiments, the first terminal device may use the direct link as the target link when the third preset condition is met, that is, the direct link Sidelink is sent first.

In addition, the first terminal device may also use the indirect link as the target link when the above third preset condition is not satisfied, that is, the indirect link transmission (eg, uplink transmission) is prioritized.

The third preset condition may include that the third logical channel priority is higher than the direct link priority threshold, and the fourth logical channel priority is lower than the indirect link priority threshold.

It should be noted that the terminal device can send the above logical channel priority through one or more of Sidelink RRC messages, Sidelink MAC CE and SCI. The end device may also receive the above logical channel priority through one or more of Sidelink RRC messages, Sidelink MAC CE and SCI.

Figure 5 shows a link determination method according to an exemplary embodiment, which can be applied to access network equipment in the above communication system. As shown in Figure 5, the method may include:

S501. The access network device determines the first parameter.

S502. The access network device sends the first parameter to the first terminal device.

Wherein, the first parameter is used to determine the first link selection threshold when the resource type used by the direct link Sidelink is an unauthorized resource, to instruct the first terminal device to determine the resource link correspondence relationship according to the first parameter, According to the resource link correspondence, the target link selection threshold corresponding to the resource type of the direct link is determined, and the target link used for communication is determined according to the target link selection threshold.

Using the above method, the access network device can send the first parameter to the first terminal device, and can instruct the first terminal device to determine based on the first parameter that the resource type used by the direct link Sidelink is an unauthorized resource. A link selection threshold, so as to determine the target link selection threshold when the resource type is an unauthorized resource, and determine the target link used for communication based on the target link selection threshold. The target link can be selected based on the resource type, thereby avoiding the problem of unreasonable link selection leading to direct link transmission failure.

In some embodiments, the above-mentioned first parameter may be used to instruct the first terminal device to determine the first link selection threshold when the resource type is an unauthorized resource.

Further, the above-mentioned first link selection threshold may include a first direct link priority threshold and a first indirect link priority threshold, and the first parameter may include a parameter used to determine the priority of the first direct link. The second parameter of the level threshold, and the third parameter used to determine the first indirect link priority threshold.

In other embodiments, the first parameter may be used to instruct the first terminal device to determine the second link selection threshold when the resource type is an authorized resource.

For example, the first parameter may include a second link selection threshold corresponding to the authorized resource.

Further, the above-mentioned second link selection threshold may include a second direct link priority threshold and a second indirect link priority threshold, and the first parameter may include a parameter used to determine the second direct link priority. The fourth parameter of the level threshold, and the fourth parameter used to determine the second indirect link priority threshold.

For example, the first parameter may include: the corresponding second direct link priority threshold and the second indirect link priority threshold when the resource type is an authorized resource.

Further, the first link selection threshold may include a first direct link priority threshold and a first indirect link priority threshold, and the second link selection threshold may also include a second direct link priority. threshold and the second indirect link priority threshold.

In some embodiments, the direct link Sidelink is a communication link between the first terminal device and other terminal devices; the indirect link is an uplink between the first terminal device and the access network device. .

In some embodiments, the access network device may send the above-mentioned first parameter to the terminal device (for example, the first terminal device or the second terminal device) through one or more of a system message and an RRC message.

For example, the access network device can send the above first parameter to the terminal device through SIB12 (System Information Block 12) or other SIB messages in the system message.

For another example, the access network device may send the above-mentioned first parameter to the terminal device through an RRC reconfiguration message (RRC Reconfiguration) or other RRC message.

It should be noted that in this embodiment, the first terminal device determines the target link selection threshold corresponding to the resource type of the direct link, and determines the specific method of the target link used for communication based on the target link selection threshold. Reference may be made to the descriptions in the above other embodiments, and the present disclosure will not be repeated here.

Figure 6 is a link determination method according to an exemplary embodiment. As shown in Figure 6, the method may include:

S601. The access network device sends the first parameter to the first terminal device.

S602. The first terminal device determines the resource link correspondence relationship according to the received first parameter.

The resource link correspondence includes a correspondence between the resource type of the direct link and the link selection threshold.

In some embodiments, the resource link correspondence relationship may include a corresponding first link selection threshold when the resource type of the direct link is an unauthorized resource. The above-mentioned first parameter may be used to instruct the first terminal device to determine the first link selection threshold when the resource type is an unauthorized resource. In this way, the first terminal device can determine the corresponding first link selection threshold when the resource type is an unauthorized resource according to the first parameter.

Further, the above-mentioned first link selection threshold may include a first direct link priority threshold and a first indirect link priority threshold, and the first parameter may include a parameter used to determine the priority of the first direct link. The second parameter of the level threshold, and the third parameter used to determine the first indirect link priority threshold. In this way, the first terminal device can determine the first direct link priority threshold according to the second parameter, and determine the first indirect link priority threshold according to the third parameter.

In other embodiments, the resource link correspondence relationship may include a corresponding second link selection threshold when the resource type of the direct link is an authorized resource. The above-mentioned first parameter may be used to instruct the first terminal device to determine the second link selection threshold when the resource type is an authorized resource. In this way, the first terminal device can determine the corresponding second link selection threshold when the resource type is an authorized resource based on the first parameter.

Further, the above-mentioned second link selection threshold may include a second direct link priority threshold and a second indirect link priority threshold, and the first parameter may include a parameter used to determine the second direct link priority. The fourth parameter of the level threshold, and the fourth parameter used to determine the second indirect link priority threshold. In this way, the first terminal device can determine the second direct link priority threshold according to the fourth parameter, and determine the second indirect link priority threshold according to the fifth parameter.

In other embodiments, the resource link correspondence relationship may include the corresponding first link selection threshold when the resource type of the direct link is an unauthorized resource, and the resource type of the direct link is an authorized resource. Lower the corresponding second link selection threshold.

S603. When the first terminal device determines that the direct link Sidelink and the indirect link cannot transmit at the same time, obtain the resource type used by the direct link.

For example, the resource type used by the direct link may include one or more of authorized resources and unauthorized resources.

S604. The first terminal device determines a target link for communication from the direct link and the indirect link according to the resource type.

For example, the first terminal device may determine the target link selection threshold corresponding to the resource type based on the above resource link correspondence relationship, and determine the target link based on the target link selection threshold.

It should be noted that, for the specific manner in which the first terminal device determines the target link, reference may be made to the description in the above embodiments, which will not be described again here.

Using the above method, the first terminal device can determine the resource link correspondence according to the first parameter sent by the access network device, and obtain the direct link Sidelink and the indirect link when it is determined that the direct link Sidelink and the indirect link cannot be sent at the same time. The resource type used by the connected link; and based on the resource type, the target link used for communication is determined from the direct link and the indirect link. In this way, the target link can be selected based on the resource type, thereby avoiding the problem of unreasonable link selection leading to direct link transmission failure.

Figure 7 is a block diagram of a link determination device 700 according to an exemplary embodiment, applied to the first terminal device. As shown in Figure 7, the device 700 may include:

The first determination module 701 is configured to determine the resource type corresponding to the direct link when it is determined that the direct link Sidelink and the indirect link of the first terminal device cannot be transmitted at the same time;

The second determination module 702 is configured to determine a target link for communication from the direct link and the indirect link according to the resource type.

In some embodiments, the second determination module 702 is configured to determine a target link selection threshold according to the resource type of the direct link; wherein different resource types correspond to different link selection thresholds; The target link is determined according to the target link selection threshold.

In some embodiments, the second determination module 702 is configured to determine the target link selection threshold corresponding to the resource type according to the resource link correspondence; the resource link correspondence includes the direct link The corresponding relationship between resource types and link selection thresholds.

In some embodiments, the device further includes:

Figure 8 is a block diagram of a link determination device 700 according to an exemplary embodiment. As shown in Figure 8, the device 700 may also include:

The first receiving module 703 is configured to receive the first parameter sent by the access network device; the first parameter is used to instruct the first terminal device to determine the first link when the resource type is an unauthorized resource. Road selection threshold;

The second determination module 702 is configured to determine the resource link correspondence relationship according to the first parameter.

In some embodiments, the second determination module 702 is configured to, when the resource type is an unauthorized resource, determine the first link corresponding to the unauthorized resource according to the resource link correspondence. The path selection threshold is used as the target link selection threshold.

In some embodiments, the second determination module 702 is configured to determine the resource type when the resource type is an unlicensed resource and the first terminal device is not the last terminal within the channel occupancy time COT. The first link selection threshold corresponding to the unauthorized resource is used as the target link selection threshold.

In some embodiments, the target link selection threshold includes a target direct link priority threshold and a target indirect link priority threshold; the second determination module 702 is configured to obtain the directly connected link The first logical channel priority corresponding to the link, and the second logical channel priority corresponding to the indirect link; according to the first logical channel priority, the second logical channel priority, the target The priority threshold of the direct link and the priority threshold of the target non-direct link determine the target link.

In some embodiments, the second determination module 702 is configured to use the directly connected link as the target link if a first preset condition is met; the first preset condition includes The first logical channel priority is higher than the target direct link priority threshold, and the second logical channel priority is lower than the target indirect link priority threshold.

In some embodiments, the first logical channel priority is the priority of the logical channel with the highest priority among at least one logical channel corresponding to the direct link in which data to be transmitted exists; the second logical channel priority is The level is the priority of the logical channel with the highest priority among at least one logical channel corresponding to the indirect link in which data to be transmitted exists.

In some embodiments, the second determination module 702 is configured to determine at least one second terminal device that shares the same channel occupancy time COT with the first terminal device when the resource type is an unlicensed resource. Terminal equipment; determine a third logical channel priority according to at least one logical channel corresponding to the direct link of the first terminal equipment and the second terminal equipment; based on the indirect link of the first terminal equipment Determine the fourth logical channel priority corresponding to at least one logical channel; determine the target link according to the third logical channel priority and the fourth logical channel priority.

In some embodiments, the second terminal device is a terminal device that shares the same channel occupancy time COT with the first terminal device and does not use the channel occupancy time COT for data transmission.

Figure 9 is a block diagram of a link determination device 700 according to an exemplary embodiment. As shown in Figure 9, the device 700 may also include:

The second receiving module 704 is configured to receive the fifth logical channel priority sent by the second terminal device. The fifth logical channel priority represents the existence of the direct link corresponding to the second terminal device to be transmitted. The priority of at least one logical channel of data.

In some embodiments, the second receiving module 704 is configured to receive resource location information sent by the second terminal device, where the resource location information represents the performance of the second terminal device through the channel occupancy time COT. Location information for data transmission;

The second determination module 702 is configured to determine, based on the resource location information, at least one first terminal device that shares the same channel occupancy time COT with the first terminal device and does not use the channel occupancy time COT for data transmission. 2. Terminal equipment.

In some embodiments, the resource location information includes one or more of time location information and frequency location information.

In some embodiments, the second determination module 702 is configured to prioritize at least one logical channel corresponding to the direct link of the first terminal device and the second terminal device in which data to be transmitted exists. The highest logical channel priority is used as the third logical channel priority.

In some embodiments, the second determination module 702 is configured to prioritize the logical channel with the highest priority among at least one logical channel corresponding to the indirect link of the first terminal device in which data to be transmitted exists. level as the fourth logical channel priority.

In some embodiments, the direct link Sidelink is a communication link between the first terminal device and other terminal devices; the indirect link is a communication link between the first terminal device and the access device. uplinks between network devices.

Figure 10 is a block diagram of a link determination device 1000 according to an exemplary embodiment, applied to access network equipment. As shown in Figure 10, the device 1000 may include:

The third determination module 1001 is configured to determine the first parameter;

The first sending module 1002 is configured to send the first parameter to the first terminal device; wherein the first parameter is used to determine the first parameter when the resource type used by the direct link Sidelink is an unauthorized resource. A link selection threshold to instruct the first terminal device to determine the resource link correspondence relationship according to the first parameter, and to determine the target link corresponding to the resource type of the direct link according to the resource link correspondence relationship. The path selection threshold is determined, and the target link used for communication is determined according to the target link selection threshold.

In some embodiments, the first link selection threshold includes a first direct link priority threshold and a first indirect link priority threshold; the first parameter includes a parameter used to determine the first direct link priority threshold. The second parameter of the connected link priority threshold, and the third parameter used to determine the first indirect link priority threshold.

Regarding the devices in the above embodiments, the specific manner in which each module performs operations has been described in detail in the embodiments related to the method, and will not be described in detail here.

Figure 11 is a block diagram of a link determination device according to an exemplary embodiment. The link determination device 2000 may be a terminal device in the communication system shown in Figure 1, or may be an access network device in the communication system.

Referring to Figure 11, the apparatus 2000 may include one or more of the following components: a processing component 2002, a memory 2004, and a communication component 2006.

The processing component 2002 may be used to control the overall operations of the device 2000, such as operations associated with display, phone calls, data communications, camera operations, and recording operations. The processing component 2002 may include one or more processors 2020 to execute instructions to complete all or part of the steps of the above-mentioned link determination method. Additionally, processing component 2002 may include one or more modules that facilitate interaction between processing component 2002 and other components. For example, processing component 2002 may include a multimedia module to facilitate interaction between the multimedia component and processing component 2002.

Memory 2004 is configured to store various types of data to support operations at device 2000. Examples of such data include instructions for any application or method operating on device 2000, contact data, phonebook data, messages, pictures, videos, etc. Memory 2004 may be implemented by any type of volatile or non-volatile storage device, or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EEPROM), Programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disk.

Communication component 2006 is configured to facilitate wired or wireless communication between apparatus 2000 and other devices. The device 2000 can access a wireless network based on communication standards, such as Wi-Fi, 2G, 3G, 4G, 5G, 6G, NB-IOT, eMTC, etc., or a combination thereof. In an exemplary embodiment, the communication component 2006 receives broadcast signals or broadcast related information from an external broadcast management system via a broadcast channel. In one exemplary embodiment, the communications component 2006 also includes a near field communications (NFC) module to facilitate short-range communications. For example, the NFC module can be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology and other technologies.

In an exemplary embodiment, apparatus 2000 may be configured by one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable Gate array (FPGA), controller, microcontroller, microprocessor or other electronic components are implemented for executing the above link determination method.

The above-mentioned device 2000 can be an independent electronic device or a part of an independent electronic device. For example, in one embodiment, the electronic device can be an integrated circuit (Integrated Circuit, IC) or a chip, where the integrated circuit can be an IC can also be a collection of multiple ICs; the chip can include but is not limited to the following types: GPU (Graphics Processing Unit, graphics processor), CPU (Central Processing Unit, central processing unit), FPGA (Field Programmable Gate Array, Programmable logic array), DSP (Digital Signal Processor, digital signal processor), ASIC (Application Specific Integrated Circuit, application specific integrated circuit), SOC (System on Chip, SoC, system on a chip or system-level chip), etc. The above integrated circuit or chip can be used to execute executable instructions (or codes) to implement the above link determination method. The executable instructions can be stored in the integrated circuit or chip, or can be obtained from other devices or devices. For example, the integrated circuit or chip includes a processor, a memory, and an interface for communicating with other devices. The executable instructions can be stored in the processor, and when the executable instructions are executed by the processor, the above link determination method is implemented; or, the integrated circuit or chip can receive the executable instructions through the interface and transmit them to the processor. Execute to implement the above link determination method.

In an exemplary embodiment, the present disclosure also provides a computer-readable storage medium on which computer program instructions are stored. When the program instructions are executed by a processor, the steps of the link determination method provided by the present disclosure are implemented. For example, the computer-readable storage medium may be a non-transitory computer-readable storage medium including instructions, for example, may be the above-mentioned memory 2004 including instructions, and the above-mentioned instructions may be executed by the processor 2020 of the device 2000 to complete the above-mentioned chain. Road determination method. For example, the non-transitory computer-readable storage medium may be ROM, random access memory (RAM), CD-ROM, magnetic tape, floppy disk, optical data storage device, etc.

In another exemplary embodiment, a computer program product is also provided, the computer program product comprising a computer program executable by a programmable device, the computer program having a function for performing the above when executed by the programmable device. The code part of the link determination method.

Other embodiments of the disclosure will be readily apparent to those skilled in the art from consideration of the specification and practice of the disclosure. This application is intended to cover any variations, uses, or adaptations of the disclosure that follow the general principles of the disclosure and include common common sense or customary technical means in the technical field that are not disclosed in the disclosure. . It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It is to be understood that the present disclosure is not limited to the precise structures described above and illustrated in the accompanying drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the disclosure is limited only by the appended claims.

Claims

A link determination method, characterized in that it is applied to a first terminal device, and the method includes:

When it is determined that the direct link Sidelink and the indirect link of the first terminal device cannot be transmitted at the same time, determine the resource type corresponding to the direct link;

A target link for communication is determined from the directly connected link and the indirect link according to the resource type.
The method according to claim 1, wherein determining a target link for communication from the direct link and the indirect link according to the resource type includes:

Determine the target link selection threshold according to the resource type of the direct link; wherein different resource types correspond to different link selection thresholds;

The target link is determined according to the target link selection threshold.
The method according to claim 2, wherein determining the target link selection threshold according to the resource type of the direct link includes:

The target link selection threshold corresponding to the resource type is determined according to the resource link correspondence; the resource link correspondence includes the correspondence between the resource type of the direct link and the link selection threshold.
The method according to claim 3, characterized in that the resource link correspondence relationship is determined in the following manner:

Receive the first parameter sent by the access network device; the first parameter is used to instruct the first terminal device to determine the first link selection threshold when the resource type is an unauthorized resource;

The resource link correspondence relationship is determined according to the first parameter.
The method according to claim 3, wherein determining the target link selection threshold corresponding to the resource type according to the resource link correspondence includes:

When the resource type is an unauthorized resource, according to the resource link correspondence relationship, the first link selection threshold corresponding to the unauthorized resource is used as the target link selection threshold.
The method according to claim 3, wherein determining the target link selection threshold corresponding to the resource type according to the resource link correspondence includes:

When the resource type is an unlicensed resource and the first terminal device is not the last terminal within the channel occupancy time COT, the first link selection threshold corresponding to the unlicensed resource is used as the target link Path selection threshold.
The method of claim 2, wherein the target link selection threshold includes a target direct link priority threshold and a target non-direct link priority threshold; the target link selection threshold is Determining the target link includes:

Obtain the first logical channel priority corresponding to the directly connected link, and the second logical channel priority corresponding to the indirect link;

The target link is determined according to the first logical channel priority, the second logical channel priority, the target direct link priority threshold and the target indirect link priority threshold.
The method according to claim 7, characterized in that the method is based on the first logical channel priority, the second logical channel priority, the target direct link priority threshold and the target non-direct link priority. Link priority threshold, determining the target link includes:

When the first preset condition is met, the direct link is used as the target link; the first preset condition includes that the first logical channel has a higher priority than the target direct link. priority threshold, and the priority of the second logical channel is lower than the priority threshold of the target indirect link.
The method according to claim 7, characterized in that:

The first logical channel priority is the priority of the logical channel with the highest priority among at least one logical channel corresponding to the direct link in which data to be transmitted exists;

The second logical channel priority is the priority of the logical channel with the highest priority among at least one logical channel corresponding to the indirect link in which data to be transmitted exists.
The method according to claim 1, wherein determining a target link for communication from the direct link and the indirect link according to the resource type includes:

When the resource type is an unlicensed resource, determine at least one second terminal device that shares the same channel occupancy time COT with the first terminal device;

Determine a third logical channel priority according to at least one logical channel corresponding to the direct link between the first terminal device and the second terminal device;

Determine a fourth logical channel priority according to at least one logical channel corresponding to the indirect link of the first terminal device;

The target link is determined according to the third logical channel priority and the fourth logical channel priority.
The method of claim 10, wherein the second terminal device shares the same channel occupancy time (COT) with the first terminal device and does not use the channel occupancy time (COT) for data transmission. Terminal Equipment.
The method of claim 10, further comprising:

Receive a fifth logical channel priority sent by the second terminal device. The fifth logical channel priority represents the priority of at least one logical channel corresponding to the direct link of the second terminal device in which data to be transmitted exists. .
The method of claim 10, further comprising:

Receive resource location information sent by the second terminal device, where the resource location information represents the location information of the second terminal device for data transmission through the channel occupancy time COT;

Determining at least one second terminal device that shares the same channel occupancy time COT with the first terminal device includes:

According to the resource location information, at least one second terminal device that shares the same channel occupancy time COT with the first terminal device and does not use the channel occupancy time COT for data transmission is determined.
The method according to claim 13, wherein the resource location information includes one or more of time location information and frequency location information.
The method according to claim 10, wherein determining the third logical channel priority based on at least one logical channel corresponding to the direct link between the first terminal device and the second terminal device includes:

The priority of the logical channel with the highest priority among at least one logical channel in which data to be transmitted exists corresponding to the direct link between the first terminal device and the second terminal device is used as the third logical channel priority.
The method according to claim 10, wherein determining the fourth logical channel priority based on at least one logical channel corresponding to the indirect link of the first terminal device includes:

The priority of the logical channel with the highest priority among at least one logical channel corresponding to the indirect link of the first terminal device in which data to be transmitted exists is used as the fourth logical channel priority.
The method according to any one of claims 1 to 16, characterized in that the direct link Sidelink is a communication link between the first terminal device and other terminal devices; the indirect link A path is an uplink between the first terminal device and the access network device.
A link determination method, characterized in that it is applied to access network equipment, and the method includes:

Determine the first parameter;

Send the first parameter to the first terminal device; wherein the first parameter is used to determine the first link selection threshold when the resource type used by the direct link Sidelink is an unauthorized resource to indicate the The first terminal device determines a resource link correspondence according to the first parameter, determines a target link selection threshold corresponding to the resource type of the direct link according to the resource link correspondence, and determines a target link selection threshold according to the target The link selection threshold determines the target link used for communication.
The method of claim 18, wherein the first link selection threshold includes a first direct link priority threshold and a first indirect link priority threshold; the first parameter includes a second parameter for determining the first direct link priority threshold, and a third parameter for determining the first indirect link priority threshold.
The method according to claim 18 or 19, characterized in that the direct link Sidelink is a communication link between the first terminal device and other terminal devices; the indirect link is the An uplink between the first terminal device and the access network device.
A link determination device, characterized in that it is applied to a first terminal device, and the device includes:

The first determination module is configured to determine the resource type corresponding to the direct link when it is determined that the direct link Sidelink and the indirect link of the first terminal device cannot be transmitted at the same time;

The second determination module is configured to determine a target link for communication from the direct link and the indirect link according to the resource type.
A link determination device, characterized in that it is applied to access network equipment, and the device includes:

a third determination module configured to determine the first parameter;

The first sending module is configured to send the first parameter to the first terminal device; wherein the first parameter is used to determine the first parameter when the resource type used by the direct link Sidelink is an unauthorized resource. A link selection threshold to instruct the first terminal device to determine the resource link correspondence relationship according to the first parameter, and to determine the target link corresponding to the resource type of the direct link according to the resource link correspondence relationship. A threshold is selected, and a target link for communication is determined according to the target link selection threshold.
A link determination device, characterized in that the device includes:

processor;

Memory used to store instructions executable by the processor;

Wherein, the processor is configured to perform the steps of the method described in any one of claims 1 to 17, or the processor is configured to perform the steps of the method described in any one of claims 18 to 20.
A computer-readable storage medium with computer program instructions stored thereon, characterized in that when the computer program instructions are executed by a processor, the steps of the method described in any one of claims 1 to 17 are implemented, or, Computer program instructions, when executed by a processor, implement the steps of the method of any one of claims 18 to 20.
A chip, characterized in that it includes a processor and an interface; the processor is used to read instructions to execute the steps of the method described in any one of claims 1 to 17, or the processor is used to read instructions to Carry out the steps of the method according to any one of claims 18 to 20.