CN115336378A

CN115336378A - Link determination method, link determination device, storage medium and chip

Info

Publication number: CN115336378A
Application number: CN202280002600.4A
Authority: CN
Inventors: 杨星
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2022-07-13
Filing date: 2022-07-13
Publication date: 2022-11-11
Also published as: WO2024011468A1

Abstract

The disclosure relates to a link determination method, a link determination device, a storage medium and a chip. The method comprises the following steps: under the condition that the direct connection link Sidelink and the non-direct connection link of the first terminal device cannot be sent simultaneously, acquiring the resource type used by the direct connection link; and determining a target link for communication from the direct link and the non-direct link according to the resource type. Therefore, the target link can be selected according to the resource type, and the problem that the direct link fails to be sent due to unreasonable link selection can be avoided.

Description

Link determining method, device, storage medium and chip

Technical Field

The present disclosure relates to the field of communications technologies, and in particular, to a link determining method, an apparatus, a storage medium, and a chip.

Background

With the development of wireless communication technology, in order to implement direct communication between terminal devices, 3GPP (3 rd Generation Partnership Project) defines a Sidelink (which may be referred to as a direct link or a Sidelink) communication method. By way of example, a typical application scenario for Sidelink communications is the Internet of vehicles (V2X). In the internet of vehicles, each vehicle can be used as a terminal device, and the terminal device can communicate through a direct link Sidelink, for example, information transmission is performed through a direct connection mode, so that communication time delay is effectively reduced.

Due to the introduction of the Sidelink, the terminal device may have a situation that data to be sent exists in various links, for example, data to be sent exists in both a direct link and a non-direct link. In the related art, when a direct link and a non-direct link cannot be simultaneously transmitted, there is a problem that the direct link fails to be transmitted due to unreasonable link selection.

Disclosure of Invention

To overcome the above problems in the related art, the present disclosure provides a link determining method, apparatus, storage medium, and chip.

According to a first aspect of the embodiments of the present disclosure, there is provided a link determining method applied to a first terminal device, the method including:

determining a resource type corresponding to a direct connection link when determining that the direct connection link Sidelink and a non-direct connection link of the first terminal device cannot be sent simultaneously;

and determining a target link for communication from the direct link and the non-direct link according to the resource type.

According to a second aspect of the embodiments of the present disclosure, there is provided a link determining method applied to an access network device, the method including:

determining a first parameter;

sending the first parameter to a first terminal device; the first parameter is used for determining a first link selection threshold under the condition that the resource type used by the direct connection link Sidelink is an unauthorized resource, so as to indicate the first terminal device to determine a resource link corresponding relation according to the first parameter, determine a target link selection threshold corresponding to the resource type of the direct connection link according to the resource link corresponding relation, and determine a target link for communication according to the target link selection threshold.

According to a third aspect of the embodiments of the present disclosure, there is provided a link determining apparatus applied to a first terminal device, the apparatus including:

a first determining module, configured to determine a resource type corresponding to a direct connection link when it is determined that the direct connection link and a non-direct connection link of the first terminal device cannot be simultaneously transmitted;

a second determination module configured to determine a target link for communication from the direct link and the non-direct link according to the resource type.

According to a fourth aspect of the embodiments of the present disclosure, there is provided a link determining apparatus, applied to an access network device, the apparatus including:

a third determination module configured to determine the first parameter;

a first sending module configured to send the first parameter to a first terminal device; the first parameter is used for determining a first link selection threshold under the condition that the resource type used by the direct connection link Sidelink is an unauthorized resource, so as to indicate the first terminal device to determine a resource link corresponding relation according to the first parameter, determine a target link selection threshold corresponding to the resource type of the direct connection link according to the resource link corresponding relation, and determine a target link for communication according to the target link selection threshold.

According to a fifth aspect of the embodiments of the present disclosure, there is provided a link determining apparatus, including:

a processor;

a memory for storing processor-executable instructions;

wherein the processor is configured to perform the steps of the link determination method provided by the first aspect of the present disclosure.

According to a sixth aspect of an embodiment of the present disclosure, there is provided a link determining apparatus including:

a processor;

a memory for storing processor-executable instructions;

wherein the processor is configured to perform the steps of the link determining method provided by the second aspect of the present disclosure.

According to a seventh aspect of embodiments of the present disclosure, there is provided a computer-readable storage medium having stored thereon computer program instructions which, when executed by a processor, implement the steps of the link determination method provided by the first aspect of the present disclosure.

According to an eighth aspect of embodiments of the present disclosure, there is provided a computer-readable storage medium having stored thereon computer program instructions which, when executed by a processor, implement the steps of the link determination method provided by the second aspect of the present disclosure.

According to a ninth aspect of the embodiments of the present disclosure, there is provided a chip including: a processor and an interface; the processor is configured to read instructions to perform the steps of the link determination method provided by the first aspect of the present disclosure,

according to a tenth aspect of embodiments of the present disclosure, there is provided a chip comprising: a processor and an interface; the processor is configured to read instructions to perform the steps of the link determination method provided by the second aspect of the present disclosure.

The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects: under the condition that the direct connection link Sidelink and the non-direct connection link of the first terminal device cannot be sent simultaneously, acquiring the resource type used by the direct connection link; and determining a target link for communication from the direct link and the non-direct link according to the resource type. Therefore, the target link can be selected according to the resource type, and the problem that the direct link fails to be sent due to unreasonable link selection can be solved.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

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

Fig. 1 is a schematic diagram of a communication system shown in accordance with an example embodiment.

Fig. 2 is a flow chart illustrating a method of link determination according to an example embodiment.

Fig. 3 is a flow chart illustrating a method of link determination according to an example embodiment.

Fig. 4 is a flow chart illustrating a method of link determination according to an example embodiment.

Fig. 5 is a flow chart illustrating a method of link determination according to an example embodiment.

Fig. 6 is a flow chart illustrating a method of link determination according to an example embodiment.

Fig. 7 is a block diagram illustrating a link determining apparatus in accordance with an example embodiment.

Fig. 8 is a block diagram illustrating a link determining apparatus according to an example embodiment.

Fig. 9 is a block diagram illustrating a link determining apparatus according to an example embodiment.

Fig. 10 is a block diagram illustrating a link determining apparatus according to an example embodiment.

Fig. 11 is a block diagram illustrating a link determining apparatus according to an example embodiment.

Detailed Description

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

It should be noted that all actions of acquiring signals, information or data in the present disclosure are performed under the premise of complying with the corresponding data protection regulation policy of the country of the location and obtaining the authorization given by the owner of the corresponding device.

In the description of the present disclosure, terms such as "first," "second," and the like are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. In addition, in the description with reference to the drawings, the same reference numerals in different drawings denote the same elements, but not otherwise described.

In the description of the present disclosure, unless otherwise indicated, "plurality" means two or more, and other terms are similar; "at least one of the following", "one or more" or similar expressions refer to any combination of the item(s), including any combination of the single item(s) or the plural items. For example, one or more of a, b, or c, may represent: a, b, c, a-b, a-c, b-c, or a-b-c, wherein a, b, c can be single or multiple; "and/or" is an association describing an associated object, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone, wherein A and B can be singular or plural.

Although operations may be depicted in the drawings in a particular order, this should not be understood as requiring that such operations be performed in the particular order shown or in serial order, or that all illustrated operations be performed, to achieve desirable results. In certain environments, multitasking and parallel processing may be advantageous.

After the Sidelink communication is introduced, the terminal device may have a situation that multiple links (for example, a direct link and a non-direct link) all have data to be sent and need to be sent simultaneously. In some scenarios (e.g., due to resource collision, insufficient power, etc.), the direct link and the non-direct link (e.g., uplink) cannot transmit simultaneously, and it is necessary to determine which link is preferentially used for transmission. If the direct connection link and the non-direct connection link both have data to send but cannot send simultaneously, in the related technology, one link can be selected for sending through comparison of the priorities of the logical channels, but the problem that a target link cannot be reasonably selected exists, which may cause failure in sending the direct connection link and affect communication quality between terminal devices.

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

The following first presents an environment for implementing embodiments of the present disclosure.

The technical scheme of the embodiment of the application can be applied to various communication systems. The communication system may include one or more of a 4G (fourth Generation) communication system, a 5G (fifth Generation) communication system, and other future wireless communication systems (e.g., 6G). The communication system may also include one or more of a Public Land Mobile Network (PLMN) Network, a Device-to-Device (D2D) communication system, a Machine-to-Machine (M2M) communication system, an Internet of Things (IoT) communication system, a Vehicle-to-event (V2X) communication system, or other communication systems.

Fig. 1 is a schematic diagram illustrating a communication system according to an example embodiment, which may include a terminal device 150 and an access network device 160, as shown in fig. 1. The communication system may be configured to support 4G network Access technologies, such as Long Term Evolution (LTE) Access technologies, or 5G network Access technologies, such as New Radio Access Technology (New RAT), or other future wireless communication technologies. It should be noted that, in the communication system, the number of the access network device and the terminal device may be one or more, and the number of the access network device and the terminal device of the communication system shown in fig. 1 is only an adaptive example, which is not limited in this disclosure.

The access network device in fig. 1 may be used to support terminal access, for example, the access network device may be an evolved Node B (eNB or eNodeB) in LTE; the access network device may also be the next Generation base station (the next Generation Node B, gNB or gnnodeb) in a 5G network; the Access Network device may also be a Radio Access Network (NG-RAN) device in a 5G Network; the access Network device may also be a base station in a Public Land Mobile Network (PLMN) of a future evolution, a Broadband Network service Gateway (BNG), a convergence switch, or a non-3 GPP access device. Optionally, the access network device in the embodiment of the present disclosure may include various forms of base stations, for example: macro base stations, micro base stations (also referred to as small stations), relay stations, access points, 5G base stations or future base stations, satellites, transmission points (TRPs), transmission Points (TPs), mobile switching centers, and devices-to-devices (D2D), machines-to-machines (M2M), internet of Things (IoT), vehicle networking (V2X), or other devices that assume a function of a base station in communication, and the like, and the embodiments of the present disclosure are not particularly limited thereto. For convenience of description, in all embodiments of the present disclosure, the apparatus for providing a terminal device with a wireless communication function is referred to as an access network device or a base station.

The Terminal device in fig. 1 may be an electronic device providing voice or data connectivity, and for example, the Terminal device may also be referred to as a User Equipment (UE), a Subscriber Unit (Subscriber Unit), a Mobile Station (Mobile Station), a Station (Station), a Terminal (Terminal), and so on. Illustratively, the terminal device may include a smart phone, a smart wearable device, a smart speaker, a smart tablet, a Wireless modem (modem), a Wireless Local Loop (WLL) station, a PDA (Personal Digital Assistant), a CPE (Customer Premise Equipment), and the like. With the development of wireless communication technology, a device which can access a communication system, can communicate with an access network device of the communication system, can communicate with other objects through the communication system, or can directly communicate between two or more devices may be a terminal device in the embodiments of the present disclosure; for example, terminals and automobiles in intelligent transportation, household appliances in smart homes, electric power meter reading instruments, voltage monitoring instruments, environment monitoring instruments, video monitoring instruments in intelligent security networks, cash registers and the like. In the disclosed embodiments, the terminal device may communicate with the access network device. Communication may also be performed between multiple terminal devices. The terminal device may be stationary or mobile, which is not limited by this disclosure.

In some embodiments, the terminal devices in fig. 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 with each other through a direct link Sidelink. The manner of performing the 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, one or more first terminal devices may be provided, and one or more second terminal devices may also be provided, which is not limited by the present disclosure.

The first terminal device may communicate with the access network device over a non-direct link, which may include an uplink and/or a downlink between the first terminal device and the access network device. For example, the non-direct link may include one or more of PRACH (Physical Random Access Channel), PUCCH (Physical Uplink Control Channel), PUSCH (Physical Uplink Shared Channel), PDSCH (Physical Downlink Shared Channel), PDCCH (Physical Downlink Control Channel), and the like.

Fig. 2 is a diagram illustrating a link determining method according to an exemplary embodiment, which may be applied to a terminal device, such as a first terminal device, in the communication system. As shown in fig. 2, the method may include:

s201, a first terminal device determines a resource type corresponding to a direct connection link under the condition that the direct connection link Sidelink and a non-direct connection link of the first terminal device cannot be sent simultaneously.

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

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

It should be noted that the target resource currently used by the direct connection link may be obtained by a request from the terminal device to the access network device; the terminal device may also determine itself, for example, when the terminal is limited in bandwidth of the authorized frequency resource, the terminal may determine at least one unlicensed frequency resource as the target resource.

In some embodiments, the non-direct link may be an uplink, the first device terminal may send data to the base station through the uplink, and when both the direct link and the non-direct link have to send data simultaneously, but the direct link and the non-direct link cannot be sent simultaneously due to a specific reason, the terminal device may determine that the direct link and the non-direct link cannot be sent simultaneously. The specific reasons may include: frequency resource conflict, insufficient transmission power of the terminal device, and the like, which is not limited by the present disclosure.

S202, the first terminal device determines a target link for communication from the direct connection link and the non-direct connection link according to the resource type.

In this step, the target link may be determined in different ways according to different resource types.

In some embodiments, in the case that the resource type is an unauthorized resource, the direct link may be preferentially used as the target link to transmit data.

It should be noted that, in the case of performing the sildelink transmission using the unauthorized resource, the multiple terminal devices may perform channel monitoring to determine whether link resources (e.g., frequency resources and channel resources) are idle, and if the terminal devices find that some link resources are not used for transmission by any terminal within a certain time through the channel monitoring, it may be determined that the link resources are idle, so that the terminal devices may occupy the link resources to perform the sildelink transmission. Therefore, under the condition that the type of the resource is unauthorized resource and the direct connection link and the non-direct connection link cannot be simultaneously transmitted, if the non-direct connection link is preferentially selected, the resource of the direct connection link is idle, and the resource of the direct connection link is seized by other terminal equipment with a certain probability, so that the direct connection link fails to be transmitted.

By means of the method in the embodiment, when the resource type is unauthorized, the direct connection link is preferentially used as the target link, so that unauthorized resources caused by long-time idle of the resources of the direct connection link can be prevented from being preempted by other terminal devices, and the sending reliability of the direct connection link is improved.

In other embodiments, in the case where the resource type is an authorized resource, the link selection may be performed in the manner in the related art. For example, a direct link or a non-direct link may be selected as the target link according to fairness principles. For example, direct links and non-direct links may be used in turn as a function of time; as another example, the target link may be randomly selected from a direct link or a non-direct link.

By adopting the method, under the condition that the direct link Sidelink and the non-direct link of the first terminal equipment cannot be sent simultaneously, the resource type used by the direct link is obtained; and determining a target link for communication from the direct link and the non-direct link according to the resource type. Therefore, the target link can be selected according to the resource type, and the problem that the direct link fails to be sent due to unreasonable link selection can be solved.

Fig. 3 illustrates a method of link determination according to an example embodiment. As shown in fig. 3, the method may include:

s301, the first terminal device determines the resource type corresponding to the direct connection link under the condition that the direct connection link Sidelink and the non-direct connection link of the first terminal device cannot be sent simultaneously.

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

Illustratively, the target link selection threshold corresponding to the resource type may be determined according to the resource link correspondence. The resource link corresponding relation comprises the corresponding relation between the resource type of the direct connection link and the link selection threshold.

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

In other embodiments, the resource link correspondence relationship may include a second link selection threshold corresponding to a case that 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 the authorized resource and the unauthorized resource 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 correspond to the same link selection threshold. For example, the link selection thresholds corresponding to the authorized resource and the unauthorized resource may also be the same, that is, the 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 an unauthorized resource, a first link selection threshold corresponding to the unauthorized resource may be used as the target link selection threshold according to the resource link correspondence.

For example, in a case that the resource type is an unauthorized resource, a 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 non-direct link priority threshold; the first link selection threshold may also include a first direct connection link priority threshold and a first non-direct connection link priority threshold; the second link selection threshold may also include a second direct link priority threshold and a second non-direct link priority threshold.

Therefore, 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 connection link priority threshold may be lower than the second direct connection link priority threshold.

In other embodiments, the first non-direct link priority threshold may be higher than the second non-direct link priority threshold.

In some other embodiments, the first direct connection link priority threshold may be lower than a second direct connection link priority threshold, and the first non-direct connection link priority threshold may be higher than the second non-direct connection link priority threshold.

Through the threshold, the first terminal device can preferentially select the direct connection link to transmit under the condition that the resource type of the direct connection link is unauthorized.

For example, the first terminal device may first obtain a first logical channel priority corresponding to the direct connection link and a second logical channel priority corresponding to the non-direct connection link; and then, under the condition that the priority of the first logic channel is higher than the priority threshold of the target direct connection link and the priority of the second logic channel is lower than the priority threshold of the target non-direct connection link, taking the direct connection link as the target link, namely, preferentially sending the direct connection link.

In this way, under the condition that the priority threshold of the first direct connection link is lower than the priority threshold of the second direct connection link, and/or the priority threshold of the first non-direct connection link is higher than the priority threshold of the second non-direct connection link, the first terminal device can preferentially select the direct connection link to send the direct connection link under the condition that the unauthorized resource is used.

By the mode, under the condition that the direct connection link uses the unauthorized resource and the direct connection link and the indirect connection link cannot be sent simultaneously, the direct connection link can be preferentially selected to be sent, and the problem that the direct connection link is sent unsuccessfully due to occupation of other terminals caused by the fact that the unauthorized resource sent by the direct connection link is idle is avoided.

In other embodiments of the present disclosure, in a case that the resource type is an unauthorized resource and the first terminal device is not a last terminal within a Channel Occupancy Time COT (Channel Occupancy Time), a first link selection threshold corresponding to the unauthorized resource may be used as the target link selection threshold.

It should be noted that, when the terminal device performs the Sidelink transmission on the direct link on the unlicensed resource (for example, the unlicensed spectrum resource), the unlicensed resource may be selected to perform transmission through an LBT (Listen Before transmit) mechanism, the time for the terminal device to perform transmission using the licensed resource is the channel occupancy time COT, and the terminal device may also share the channel occupancy time COT occupied by itself with other terminal devices to perform the Sidelink transmission. Multiple terminals sharing the same channel occupation time COT may perform Sidelink transmission according to the negotiated sequence.

If the first terminal device is not the last sending terminal sharing the same channel occupancy time COT and the sending of the first terminal device is interrupted, other terminal devices not sharing the COT may seize the COT, which may result in that terminal devices sharing the COT and having sending time after the first terminal device cannot perform the sildenk sending. Therefore, in this embodiment, a separate target link selection threshold may be set for the scenario, so that the first terminal device preferentially uses the direct link Sidelink for transmission.

For example, in a case that the resource type is an unauthorized resource, a 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 unauthorized resource may enable 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 non-direct link priority threshold; the first link selection threshold may also include a first direct link priority threshold and a first non-direct link priority threshold.

In some other embodiments of the present disclosure, when the resource type is an authorized resource, a 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 may be the same as or different from the first link selection threshold. Therefore, different link selection thresholds are flexibly set for different resource types, and a flexible resource allocation strategy can be realized.

It should be noted that, if the resource type currently used by the direct connection link of the first terminal device includes both the unauthorized resource and the authorized resource, the target resource may also be determined according to the method in the embodiment of the present disclosure when the resource type is the unauthorized resource.

In some embodiments of the present disclosure, the determining manner of the resource link correspondence may include one or more of the following manners:

receiving a first parameter sent by access network equipment in a first mode; and determining the corresponding relation of the resource link according to the first parameter.

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

Illustratively, the first parameter may include a first link selection threshold corresponding to the unlicensed resource.

In other embodiments, where the first link selection threshold includes a first direct link priority threshold and a first non-direct link priority threshold, the first parameter may include a second parameter used to determine the first direct link priority threshold and a third parameter used to determine the first non-direct link priority threshold.

For example, the first parameter may include: and when the resource type is an unauthorized resource, the corresponding priority threshold of the first direct connection link and the priority threshold of the first non-direct connection link are set.

In some further embodiments, the first parameter may be further used to instruct the first terminal device to determine a first link selection threshold if the resource type is an unlicensed resource, and a second link selection threshold if the resource type is a licensed resource.

Illustratively, the first parameter may include a first link selection threshold corresponding to the unlicensed resource and a second link selection threshold corresponding to the licensed resource.

In still other embodiments, in a case where the first link selection threshold includes a first direct-connected link priority threshold and a first non-direct-connected link priority threshold, and the second link selection threshold includes a second direct-connected link priority threshold and a second non-direct-connected link priority threshold, the first parameter may include a fourth parameter for determining the first direct-connected link priority threshold, a fifth parameter for determining the first non-direct-connected link priority threshold, a sixth parameter for determining the second direct-connected link priority threshold, and a seventh parameter for determining the second non-direct-connected link priority threshold.

For example, the first parameter may include: the method comprises the steps of obtaining a first direct connection link priority threshold and a first non-direct connection link priority threshold corresponding to the condition that a resource type is an unauthorized resource, and obtaining a second direct connection link priority threshold and a second non-direct connection link priority threshold corresponding to the condition that the resource type is an authorized resource.

And secondly, the first terminal equipment determines the corresponding relation of the resource link according to preset parameters.

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

In other embodiments, the preset parameters may include: the method comprises the steps of configuring a first link selection threshold corresponding to a pre-configured unauthorized resource and configuring a second link selection threshold corresponding to a pre-configured authorized resource.

It should be noted that the first terminal device may also determine the resource link corresponding relationship by combining the first and second manners, for example, the first terminal device may determine the resource link corresponding relationship according to the first parameter when receiving the first parameter sent by the access network device; otherwise, the first terminal device may determine the resource link corresponding relationship according to the preset parameter when the first parameter sent by the access network device is not received or the received first parameter does not meet the preset parameter condition.

And S303, the first terminal equipment determines the target link according to the target link selection threshold.

The target link selection threshold may include a target direct connection link priority threshold and a target non-direct connection link priority threshold; in this way, in this step, a first logical channel priority corresponding to the direct connection link and a second logical channel priority corresponding to the non-direct connection link may be obtained first; and then determining the target link according to the first logic channel priority, the second logic channel priority, the target direct-connected link priority threshold and the target non-direct-connected link priority threshold.

For example, the first terminal device may determine the target link, that is, determine whether to send the priority direct link Sidelink or the priority non-direct link, according to a relationship between the priority of the first logical channel and the priority threshold of the target direct link, and a relationship between the priority of the second logical channel and the priority threshold of the target non-direct link.

In some embodiments, the first terminal device may take the direct connection link as the target link when the first preset condition is met, that is, preferentially perform the direct connection link Sidelink transmission.

In addition, the first terminal device may also take the non-direct link as a target link, that is, preferentially perform non-direct link transmission (for example, uplink transmission) when the first preset condition is not satisfied.

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

It should be noted that a smaller value of the priority may indicate a higher priority, and a larger value of the priority may indicate a higher priority, which is not limited in this disclosure.

For example, if a smaller value of the priority indicates a higher priority, the first preset condition may include: the value of the priority of the first logic channel is smaller than the value of the priority threshold of the target direct connection link, and the value of the priority of the second logic channel is larger than the value of the priority threshold of the target non-direct connection link.

In other embodiments, the first terminal device may take the non-direct link as the target link when a second preset condition is met, that is, preferentially perform non-direct link transmission; and if the second preset condition is not met, taking the direct connection link as a target link, namely preferentially sending the direct connection link.

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

Thus, by the method, the target link can be determined more flexibly according to the logical channel priority and the link priority threshold.

It should be noted that the target link selection threshold may include a target direct connection link priority threshold and a target non-direct connection link priority threshold; the first link selection threshold may also include a first direct-connection link priority threshold and a first non-direct-connection link priority threshold; the second link selection threshold may also include a second direct link priority threshold and a second non-direct link priority threshold.

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

In some other embodiments, the first direct link priority threshold may be lower than the second direct link priority threshold, and the first non-direct link priority threshold may be higher than the second non-direct link priority threshold.

By adopting the mode, under the condition that the direct connection link uses the unauthorized resource and the direct connection link and the indirect connection link cannot be sent simultaneously, the direct connection link can be preferentially selected to be sent, and the problem that the direct connection link is sent in failure due to occupation of other terminals caused by the fact that the unauthorized resource sent by the direct connection link is idle is avoided.

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

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

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

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

In some embodiments, the second logical channel priority may be a priority of a logical channel with a highest priority among at least one logical channel having data to be transmitted, which corresponds to the non-direct-connection link.

In other embodiments, the second logical channel priority may be a priority of a logical channel with a lowest priority among at least one logical channel having data to be transmitted, which corresponds to the non-direct connection link.

In some other embodiments, the second logical channel priority may be an average of priorities of at least one logical channel corresponding to the non-direct-connection link, where there is data to be transmitted.

In this way, the above logical channel priority can be flexibly determined according to the demand.

In some embodiments of the present disclosure, the first logical channel priority may be determined by:

first, in case that the resource type is an unlicensed resource, at least one second terminal device sharing the same channel occupancy time COT as 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 as the first terminal device and does not use the channel occupancy time COT for data transmission.

In further embodiments, the second terminal device may be all terminal devices sharing the same channel occupancy time COT as the first terminal device.

And then, determining the priority of the first logical channel according to at least one logical channel corresponding to the direct connection link of the first terminal device and the second terminal device.

In some embodiments, the priority of a logical channel with the highest priority among at least one logical channel with data to be transmitted, which corresponds to a direct connection link between the first terminal device and the second terminal device, may be taken as the priority of the first logical channel.

For example, the direct link of the first terminal device includes N logical channels where data to be transmitted exists, the number of the second terminal devices is K, each direct link of the second terminal device includes M logical channels where data to be transmitted exists, then there are (N + K × M) logical channels where data to be transmitted exists in total, and the priority of the logical channel with the highest priority among the (N + K × M) logical channels may be used as the priority of the first logical channel.

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

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

By adopting the above manner, the logical channel priorities corresponding to the logical channels of a plurality of terminal devices (for example, the first terminal device and the second terminal device) sharing the same COT can all be considered, a maximum value, a minimum value or an average value among the logical channel priorities can be selected as the first logical channel priority, and the target link can be determined further according to the first logical channel priority, the target direct-connected link priority threshold, the second logical channel priority and the target non-direct-connected link priority threshold. Therefore, when the target link is determined, a plurality of terminal devices sharing the same COT are considered, the target link can be determined more comprehensively and accurately, and unauthorized resources corresponding to the direct connection link are prevented from being occupied by other terminal devices.

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

The second terminal device may be a terminal device sharing the same channel occupation time COT as 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 a plurality of terminal devices sharing the same COT, any one terminal device may send its own logical channel priority to another terminal device.

It should be noted that the terminal device may send the logical channel priority through one or more of a Sidelink RRC (Sidelink Radio Resource Control) message, a Sidelink MAC CE (Sidelink Medium Access Control Element, a direct link Medium Access Control Element), and an SCI (Sidelink Control Information, a direct link Control indication). The terminal device may also receive the logical channel priority via one or more of a Sidelink RRC message, a Sidelink MAC CE, and a SCI.

In some other embodiments of the present disclosure, the first terminal device may receive resource location information sent by the second terminal device, where the resource location information may be used to represent location information of the second terminal device for data transmission through the channel occupancy time COT.

In some embodiments, the resource location information may characterize an ordered location of data transmission by the second terminal device through the COT.

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

Thus, the first terminal device may determine, according to the resource location information, at least one second terminal device that shares the same channel occupancy time COT as the first terminal device and does not use the channel occupancy time COT for data transmission.

Fig. 4 illustrates a method of link determination according to an example embodiment. As shown in fig. 4, the method may include:

s401, the first terminal device determines a resource type corresponding to a direct link when determining that the direct link Sidelink and a non-direct link of the first terminal device cannot be sent simultaneously.

S402, determining at least one second terminal device sharing the same channel occupation time COT with the first terminal device when the resource type is an unauthorized resource.

And S403, determining 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.

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

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

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

S404, determining a priority of a fourth logic channel according to at least one logic channel corresponding to the non-direct connection link of the first terminal device.

In some embodiments, the fourth logical channel priority may be a priority of a logical channel with a highest priority among the at least one logical channel with data to be transmitted corresponding to the non-direct connection link.

In other embodiments, the priority of the fourth logical channel may be the priority of a logical channel with the lowest priority among at least one logical channel with data to be transmitted, which corresponds to the non-direct connection link.

In some other embodiments, the fourth logical channel priority may be an average of priorities of at least one logical channel corresponding to the non-direct-connection link, where there is data to be transmitted.

S405, determining a target link according to the third logical channel priority and the fourth logical channel priority.

In this step, there may be a variety of ways to determine the target link, for example:

in some embodiments, the direct link Sidelink may be the target link if the third logical channel priority is greater than or equal to the fourth logical channel priority.

In other embodiments, the non-direct link may be the target link if the third logical channel priority is less than the fourth logical channel priority.

In some other embodiments, the direct link priority threshold and the non-direct link priority threshold may be determined first; and then, determining a target link according to the third logic channel priority, the fourth logic channel priority, the direct connection link priority threshold and the non-direct connection link priority threshold.

For example, the first terminal device may determine the target link according to a relationship between the priority of the third logical channel and the priority threshold of the direct connection link, and a relationship between the priority of the fourth logical channel and the priority threshold of the non-direct connection link, that is, determine whether to send the Sidelink preferentially, or send the non-direct connection link preferentially.

In some embodiments, the first terminal device may take the direct link as the target link when the third preset condition is met, that is, preferentially perform the direct link Sidelink transmission.

In addition, the first terminal device may also take the non-direct link as a target link when the third preset condition is not satisfied, that is, preferentially perform non-direct link transmission (for example, uplink transmission).

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 non-direct link priority threshold.

It should be noted that, a smaller value of the priority may be used to indicate that the priority is higher, and a larger value of the priority may also be used to indicate that the priority is higher, which is not limited in this disclosure.

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

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

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

Fig. 5 is a diagram illustrating a link determining method according to an exemplary embodiment, which may be applied to an access network device in the communication system. As shown in fig. 5, the method may include:

s501, the access network equipment determines a first parameter.

S502, the access network equipment sends the first parameter to the first terminal equipment.

The first parameter is used for determining a first link selection threshold under the condition that the resource type used by the directly connected link Sidelink is an unauthorized resource, so as to indicate the first terminal device to determine the resource link corresponding relation according to the first parameter, determine a target link selection threshold corresponding to the resource type of the directly connected link according to the resource link corresponding relation, and determine a target link for communication according to the target link selection threshold.

By adopting the above manner, the access network device may send the first parameter to the first terminal device, and may instruct the first terminal device to determine, according to the first parameter, the first link selection threshold when the resource type used by the direct link Sidelink is an unauthorized resource, so as to determine the target link selection threshold when the resource type is an unauthorized resource, and determine the target link for communication according to the target link selection threshold. The target link can be selected according to the resource type, so that the problem that the direct link fails to be sent due to unreasonable link selection can be solved.

In some embodiments, the first parameter may be used to instruct the first terminal device to determine the first link selection threshold in the case that the resource type is an unlicensed resource.

Further, the first link selection threshold may include a first direct connection link priority threshold and a first non-direct connection link priority threshold, and the first parameter may include a second parameter used to determine the first direct connection link priority threshold, and a third parameter used to determine the first non-direct connection link priority threshold.

By way of example, the first parameter may include: and when the resource type is an unauthorized resource, the corresponding priority threshold of the first direct connection link and the priority threshold of the first non-direct connection link are set.

In some embodiments, the first parameter may be used to instruct the first terminal device to determine the second link selection threshold if the resource type is a granted resource.

Illustratively, the first parameter may include a second link selection threshold corresponding to the granted resource.

Further, the second link selection threshold may include a second direct link priority threshold and a second non-direct link priority threshold, and the first parameter may include a fourth parameter for determining the second direct link priority threshold and a fourth parameter for determining the second non-direct link priority threshold.

By way of example, the first parameter may include: and the resource type is a second direct connection link priority threshold and a second non-direct connection link priority threshold corresponding to the authorized resource.

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

In some embodiments, the direct link Sidelink is a communication link between the first terminal device and another terminal device; the non-direct link is an uplink between the first terminal device and the access network device.

In some embodiments, the access network device may send the first parameter to the terminal device (e.g., the first terminal device or the second terminal device) via one or more of a system message and an RRC message.

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

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

It should be noted that, in this embodiment, the first terminal device determines a target link selection threshold corresponding to the resource type of the direct connection link, and determines a specific manner of the target link for communication according to the target link selection threshold, which may refer to the description in the foregoing other embodiments, and this disclosure is not repeated herein.

Fig. 6 is a flow diagram illustrating a method of link determination, which, as shown in fig. 6, may include:

s601, the access network equipment sends the first parameter to the first terminal equipment.

S602, the first terminal device determines the corresponding relation of the resource link according to the received first parameter.

The resource link corresponding relation comprises the corresponding relation between the resource type of the direct link and the link selection threshold.

In some embodiments, the resource link correspondence may include a first link selection threshold corresponding to a case where the resource type of the direct link is an unauthorized resource. The first parameter may be used to instruct the first terminal device to determine the first link selection threshold in the case that the resource type is an unlicensed resource. In this way, the first terminal device may determine, according to the first parameter, the corresponding first link selection threshold when the resource type is the unauthorized resource.

Further, the first link selection threshold may include a first direct link priority threshold and a first non-direct link priority threshold, and the first parameter may include a second parameter used to determine the first direct link priority threshold, and a third parameter used to determine the first non-direct link priority threshold. In this way, the first terminal device may determine the priority threshold of the first direct connection link according to the second parameter, and determine the priority threshold of the first non-direct connection link according to the third parameter.

In other embodiments, the resource link correspondence relationship may include a second link selection threshold corresponding to the condition that the resource type of the direct link is an authorized resource. The first parameter may be used to instruct the first terminal device to determine the second link selection threshold in the case that the resource type is an authorized resource. In this way, the first terminal device may determine, according to the first parameter, the second link selection threshold corresponding to the resource type being the authorized resource.

Further, the second link selection threshold may include a second direct connection link priority threshold and a second non-direct connection link priority threshold, and the first parameter may include a fourth parameter used to determine the second direct connection link priority threshold and a fourth parameter used to determine the second non-direct connection link priority threshold. In this way, the first terminal device may determine the priority threshold of the second direct connection link according to the fourth parameter, and determine the priority threshold of the second non-direct connection link according to the fifth parameter.

In some other embodiments, the resource link correspondence relationship may include a first link selection threshold corresponding to the case where the resource type of the direct link is an unauthorized resource, and a second link selection threshold corresponding to the case where the resource type of the direct link is an authorized resource.

S603, the first terminal device obtains the resource type used by the direct link when determining that the direct link Sidelink and the non-direct link cannot be sent simultaneously.

Illustratively, the type of resources 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 non-direct link according to the resource type.

For example, the first terminal device may determine, according to the resource link correspondence, a target link selection threshold corresponding to the resource type, and determine the target link according to the target link selection threshold.

It should be noted that, for the specific manner of determining the target link by the first terminal device, reference may be made to the description in the foregoing embodiment, and details are not described here again.

By adopting the method, the first terminal equipment can determine the corresponding relation of the resource link according to the first parameter sent by the access network equipment, and acquire the resource type used by the direct link when determining that the direct link Sidelink and the non-direct link cannot be sent simultaneously; and determining a target link for communication from the direct link and the non-direct link according to the resource type. Therefore, the target link can be selected according to the resource type, and the problem that the direct link fails to be sent due to unreasonable link selection can be avoided.

Fig. 7 is a block diagram illustrating a link determining apparatus 700 according to an exemplary embodiment, which is applied to a first terminal device, and as shown in fig. 7, the apparatus 700 may include:

a first determining module 701, configured to determine a resource type corresponding to a direct link when it is determined that the direct link Sidelink and a non-direct link of the first terminal device cannot be sent simultaneously;

a second determining module 702 configured to determine a target link for communication from the direct link and the non-direct link according to the resource type.

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

In some embodiments, the second determining module 702 is configured to determine, according to the resource link correspondence, a target link selection threshold corresponding to the resource type; the resource link corresponding relation comprises the corresponding relation between the resource type of the direct connection link and the link selection threshold.

In some embodiments, the apparatus further comprises:

fig. 8 is a block diagram illustrating a link determining apparatus 700 according to an example embodiment, where as shown in fig. 8, the apparatus 700 may further include:

a first receiving module 703 configured to receive a first parameter sent by an access network device; the first parameter is used for indicating the first terminal device to determine a first link selection threshold under the condition that the resource type is an unauthorized resource;

the second determining module 702 is configured to determine the resource link corresponding relationship according to the first parameter.

In some embodiments, the second determining module 702 is configured to, when the resource type is an unauthorized resource, take a first link selection threshold corresponding to the unauthorized resource as the target link selection threshold according to the resource-link correspondence relationship.

In some embodiments, the second determining module 702 is configured to, in a case that the resource type is an unlicensed resource and the first terminal device is not the last terminal within the channel occupancy time COT, use a first link selection threshold corresponding to the unlicensed resource as the target link selection threshold.

In some embodiments, the target link selection threshold comprises a target direct link priority threshold and a target non-direct link priority threshold; the second determining module 702 is configured to obtain a first logical channel priority corresponding to the direct connection link and a second logical channel priority corresponding to the non-direct connection link; and determining the target link according to the first logic channel priority, the second logic channel priority, the target direct-connected link priority threshold and the target non-direct-connected link priority threshold.

In some embodiments, the second determining module 702 is configured to, in a case that a first preset condition is met, regard the direct link as the target link; the first preset condition comprises that the priority of the first logic channel is higher than the priority threshold of the target direct connection link, and the priority of the second logic channel is lower than the priority threshold of the target non-direct connection link.

In some embodiments, the first logical channel priority is a priority of a logical channel with a highest priority among at least one logical channel with data to be transmitted, which corresponds to the direct connection link; the second logic channel priority is the priority of the logic channel with the highest priority in at least one logic channel with data to be transmitted corresponding to the non-direct connection link.

In some embodiments, the second determining module 702 is configured to determine, in case the resource type is an unlicensed resource, at least one second terminal device sharing a same channel occupancy time, COT, as the first terminal device; determining a third logical channel priority according to at least one logical channel corresponding to the direct connection link of the first terminal device and the second terminal device; determining a priority of a fourth logical channel according to at least one logical channel corresponding to the non-direct link of the first terminal device; and determining 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 as the first terminal device and does not use the channel occupancy time COT for data transmission.

Fig. 9 is a block diagram illustrating a link determining apparatus 700 according to an example embodiment, and as shown in fig. 9, the apparatus 700 may further include:

a second receiving module 704, configured to receive a fifth logical channel priority sent by the second terminal device, where the fifth logical channel priority represents a priority of at least one logical channel where data to be transmitted exists, where the at least one logical channel corresponds to a direct-connected link of the second terminal device.

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 location information of the second terminal device for data transmission by using the channel occupancy time COT;

the second determining module 702 is configured to determine, 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.

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

In some embodiments, the second determining module 702 is configured to use, as the third logical channel priority, a priority of a logical channel with a highest priority among at least one logical channel where data to be transmitted exists, which is corresponding to a direct connection link between the first terminal device and the second terminal device.

In some embodiments, the second determining module 702 is configured to use, as the fourth logical channel priority, a priority of a logical channel with a highest priority among at least one logical channel where data to be transmitted exists, which corresponds to the non-direct-connection link of the first terminal device.

Fig. 10 is a block diagram illustrating a link determining apparatus 1000 according to an exemplary embodiment, where the link determining apparatus 1000 is applied to an access network device, and as shown in fig. 10, the apparatus 1000 may include:

a third determining module 1001 configured to determine the first parameter;

a first sending module 1002 configured to send the first parameter to a first terminal device; the first parameter is used for determining a first link selection threshold under the condition that the resource type used by the direct connection link Sidelink is an unauthorized resource, so as to indicate the first terminal device to determine a resource link corresponding relation according to the first parameter, determine a target link selection threshold corresponding to the resource type of the direct connection link according to the resource link corresponding relation, and determine a target link for communication according to the target link selection threshold.

In some embodiments, the first link selection threshold comprises a first direct link priority threshold and a first non-direct link priority threshold; the first parameter comprises a second parameter used for determining the first direct connection link priority threshold and a third parameter used for determining the first non-direct connection link priority threshold.

With regard to the apparatus in the above-described embodiment, the specific manner in which each module performs the operation has been described in detail in the embodiment related to the method, and will not be elaborated here.

Fig. 11 is a block diagram illustrating a link determining apparatus according to an example embodiment. The link determining apparatus 2000 may be a terminal device in the communication system shown in fig. 1, or may be an access network device in the communication system.

Referring to fig. 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 overall operation of the device 2000, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing component 2002 may include one or more processors 2020 to execute instructions to perform all or a portion of the steps of the link determination methods described above. Further, the processing component 2002 can include one or more modules that facilitate interaction between the processing component 2002 and other components. For example, the processing component 2002 can include a multimedia module to facilitate interaction between the multimedia component and the processing component 2002.

The memory 2004 is configured to store various types of data to support operations at the apparatus 2000. Examples of such data include instructions for any application or method operating on device 2000, contact data, phonebook data, messages, pictures, videos, and so forth. The memory 2004 may be implemented by any type or combination of volatile or non-volatile memory devices, such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disks.

The communication component 2006 is configured to facilitate communications between the apparatus 2000 and other devices in a wired or wireless manner. The apparatus 2000 may access a wireless network based on a communication standard, such as Wi-Fi,2G, 3G, 4G, 5G, 6G, NB-IOT, eMTC, or the like, 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 an exemplary embodiment, the communication component 2006 further includes a Near Field Communication (NFC) module to facilitate short-range communications. For example, the NFC module may 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, the apparatus 2000 may be implemented 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 Arrays (FPGAs), controllers, micro-controllers, microprocessors or other electronic components for performing the link determination methods described above.

The apparatus 2000 may be a stand-alone electronic device or a part of a stand-alone electronic device, for example, in an embodiment, the electronic device may be an Integrated Circuit (IC) or a chip, where the IC may be one IC or a set of multiple ICs; the chip may include, but is not limited to, the following categories: a GPU (Graphics Processing Unit), a CPU (Central Processing Unit), an FPGA (Field Programmable Gate Array), a DSP (Digital Signal Processor), an ASIC (Application Specific Integrated Circuit), an SOC (System on Chip, SOC, system on Chip, or System on Chip), and the like. The integrated circuit or chip described above may be configured to execute executable instructions (or code) to implement the link determination method described above. Where the executable instructions may be stored in the integrated circuit or chip or may be retrieved from another device or apparatus, such as an integrated circuit or chip that includes a processor, memory, and an interface for communicating with other devices. The executable instructions may be stored in the processor, and when executed by the processor, implement the link determining method described above; alternatively, the integrated circuit or chip may receive executable instructions through the interface and transmit the executable instructions to the processor for execution, so as to implement the link determination method.

In an exemplary embodiment, the present disclosure also provides a computer readable storage medium having stored thereon computer program instructions, which when executed by a processor, implement the steps of the link determination method provided by the present disclosure. Illustratively, the computer-readable storage medium may be a non-transitory computer-readable storage medium comprising instructions, e.g., the memory 2004 comprising instructions, executable by the processor 2020 of the apparatus 2000 to perform the link determination method described above. For example, the non-transitory computer readable storage medium may be a ROM, a Random Access Memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like.

In another exemplary embodiment, a computer program product is also provided, which contains a computer program executable by a programmable apparatus, the computer program having code portions for performing the above-described link determination method when executed by the programmable apparatus.

Other embodiments of the disclosure will be 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 following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. 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 will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A link determination method, applied to a first terminal device, the method comprising:

2. The method of claim 1, wherein the determining a target link for communication from the direct link and the non-direct link according to the resource type comprises:

determining a target link selection threshold according to the resource type of the direct connection link; wherein, different resource types correspond to different link selection thresholds;

and determining the target link according to the target link selection threshold.

3. The method of claim 2, wherein the determining a target link selection threshold according to the resource type of the direct link comprises:

determining a target link selection threshold corresponding to the resource type according to the corresponding relation of the resource link; the resource link corresponding relation comprises the corresponding relation between the resource type of the direct connection link and the link selection threshold.

4. The method of claim 3, wherein the resource-link correspondence is determined by:

receiving a first parameter sent by access network equipment; the first parameter is used for indicating the first terminal equipment to determine a first link selection threshold under the condition that the resource type is unauthorized resource;

and determining the corresponding relation of the resource link according to the first parameter.

5. The method of claim 3, wherein the determining the target link selection threshold corresponding to the resource type according to the resource link correspondence relationship comprises:

and under the condition that the resource type is the unauthorized resource, according to the resource link corresponding relation, taking a first link selection threshold corresponding to the unauthorized resource as the target link selection threshold.

6. The method of claim 3, wherein the determining the target link selection threshold corresponding to the resource type according to the resource link correspondence relationship comprises:

and when the resource type is an unauthorized resource and the first terminal device is not the last terminal within the channel occupation time COT, taking a first link selection threshold corresponding to the unauthorized resource as the target link selection threshold.

7. The method of claim 2, wherein the target link selection threshold comprises a target direct link priority threshold and a target non-direct link priority threshold; the determining the target link according to the target link selection threshold comprises:

acquiring a first logic channel priority corresponding to the direct connection link and a second logic channel priority corresponding to the non-direct connection link;

and determining the target link according to the first logic channel priority, the second logic channel priority, the target direct-connected link priority threshold and the target non-direct-connected link priority threshold.

8. The method of claim 7, wherein the determining the target link according to the first logical channel priority, the second logical channel priority, the target direct link priority threshold, and the target non-direct link priority threshold comprises:

taking the direct connection link as the target link under the condition of meeting a first preset condition; the first preset condition comprises that the priority of the first logic channel is higher than the priority threshold of the target direct connection link, and the priority of the second logic channel is lower than the priority threshold of the target non-direct connection link.

9. The method of claim 7,

the priority of the first logic channel is the priority of the logic channel with the highest priority in at least one logic channel which is corresponding to the direct connection link and has the data to be transmitted;

the priority of the second logical channel is the priority of the logical channel with the highest priority in at least one logical channel with the data to be transmitted corresponding to the non-direct connection link.

10. The method of claim 1, wherein the determining a target link for communication from the direct link and the non-direct link according to the resource type comprises:

determining at least one second terminal device sharing the same channel occupation time COT with the first terminal device under the condition that the resource type is an unauthorized resource;

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

determining a fourth logical channel priority according to at least one logical channel corresponding to the non-direct link of the first terminal device;

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

11. The method of claim 10, wherein the second terminal device is a terminal device that shares the same channel occupancy time COT as the first terminal device and does not use the channel occupancy time COT for data transmission.

12. The method of claim 10, further comprising:

and receiving a fifth logic channel priority sent by the second terminal device, wherein the fifth logic channel priority represents the priority of at least one logic channel with data to be transmitted, which corresponds to the direct connection link of the second terminal device.

13. The method of claim 10, further comprising:

receiving resource position information sent by the second terminal device, wherein the resource position information represents position information of the second terminal device for data transmission through the channel occupation time COT;

the determining at least one second terminal device sharing the same channel occupancy time COT as the first terminal device includes:

and determining at least one second terminal device which shares the same channel occupation time COT with the first terminal device and does not use the channel occupation time COT for data transmission according to the resource position information.

14. The method of claim 13, wherein the resource location information comprises one or more of time location information and frequency location information.

15. The method of claim 10, wherein the determining a third logical channel priority according to at least one logical channel corresponding to a direct link between the first terminal device and the second terminal device comprises:

and taking the priority of the logical channel with the highest priority in at least one logical channel with the data to be transmitted corresponding to the direct connection link of the first terminal device and the second terminal device as the priority of the third logical channel.

16. The method according to claim 10, wherein the determining a fourth logical channel priority according to at least one logical channel corresponding to the non-direct link of the first terminal device comprises:

and taking the priority of the logical channel with the highest priority in at least one logical channel with the data to be transmitted corresponding to the non-direct connection link of the first terminal device as the priority of a fourth logical channel.

17. The method according to any of claims 1 to 16, wherein the direct link Sidelink is a communication link between the first terminal device and other terminal devices; the non-direct link is an uplink between the first terminal device and the access network device.

18. A link determination method applied to an access network device, the method comprising:

determining a first parameter;

19. The method of claim 18, wherein the first link selection threshold comprises a first direct link priority threshold and a first non-direct link priority threshold; the first parameter comprises a second parameter used for determining the priority threshold of the first direct connection link and a third parameter used for determining the priority threshold of the first non-direct connection link.

20. The method according to claim 18 or 19, wherein the direct link Sidelink is a communication link between the first terminal device and another terminal device; the non-direct link is an uplink between the first terminal device and the access network device.

21. A link determining apparatus, applied to a first terminal device, the apparatus comprising:

22. A link determining apparatus applied to an access network device, the apparatus comprising:

a third determining module configured to determine the first parameter;

a first sending module configured to send the first parameter to a first terminal device; the first parameter is used for determining a first link selection threshold under the condition that the resource type used by the direct connection link Sidelink is unauthorized resource, so as to indicate that the first terminal device determines the resource link corresponding relation according to the first parameter, determines a target link selection threshold corresponding to the resource type of the direct connection link according to the resource link corresponding relation, and determines a target link for communication according to the target link selection threshold.

23. A link determining apparatus, characterized in that the apparatus comprises:

a processor;

a memory for storing processor-executable instructions;

wherein the processor is configured to perform the steps of the method of any one of claims 1 to 17 or the processor is configured to perform the steps of the method of any one of claims 18 to 20.

24. A computer readable storage medium having stored thereon computer program instructions, which when executed by a processor implement the steps of the method of any of claims 1 to 17 or which when executed by a processor implement the steps of the method of any of claims 18 to 20.

25. A chip comprising a processor and an interface; the processor is configured to read instructions for performing the steps of the method of any one of claims 1 to 17 or to read instructions for performing the steps of the method of any one of claims 18 to 20.