CN115835315A

CN115835315A - Resource reselection method, device, communication equipment, storage medium and system

Info

Publication number: CN115835315A
Application number: CN202111089098.9A
Authority: CN
Inventors: 黎建辉; 鲍炜
Original assignee: Vivo Software Technology Co Ltd
Current assignee: Vivo Software Technology Co Ltd
Priority date: 2021-09-16
Filing date: 2021-09-16
Publication date: 2023-03-21
Also published as: WO2023040892A1

Abstract

The application discloses a resource reselection method, a resource reselection device, communication equipment, a storage medium and a resource reselection system, and belongs to the technical field of communication. The resource reselection method comprises the following steps: determining a second resource according to the target information under the condition that the UE fails to perform LBT on the first resource; performing LBT on the second resource. Wherein the target information comprises at least one of: the method comprises the steps of configuring resources, timer information, resource type information and resource granularity reselection probability by network side equipment, wherein the timer information is used for indicating the duration of stopping executing LBT.

Description

Resource reselection method, device, communication equipment, storage medium and system

Technical Field

The present application belongs to the field of communications technologies, and in particular, to a method, an apparatus, a communication device, a storage medium, and a system for resource reselection.

Background

Generally, in a process of communicating between User Equipment (UE) and network side Equipment, the network side Equipment may preempt an unlicensed spectrum resource for the UE, and the UE may perform data transmission with the network side Equipment according to different Channel access modes within one Channel Occupied Time (COT) through the unlicensed spectrum resource, so as to implement communication between the UE and the network side Equipment.

However, the unlicensed spectrum resources preempted by the network-side device may only be used for communication between the network-side device and the UE, and in other communication situations, the success rate of UE channel access may be low.

Disclosure of Invention

The embodiment of the application provides a resource reselection method, a resource reselection device, communication equipment, a storage medium and a resource reselection system, which can solve the problem of low success rate of UE channel access.

In a first aspect, a resource reselection method is provided, where the resource reselection method includes: the UE determines a second resource according to the target information under the condition that the UE fails to execute LBT on the first resource; the UE performs LBT on the second resource. Wherein the target information comprises at least one of: the method comprises the steps of configuring resources, timer information, resource type information and resource granularity reselection probability by network side equipment, wherein the timer information is used for indicating the duration of stopping executing LBT.

In a second aspect, a resource reselection method is provided, which includes: and the network side equipment sends target information to the UE, wherein the target information is used for the UE to reselect the resource for executing the LBT. Wherein the target information comprises at least one of: the method comprises the steps of configuring resources, timer information, resource type information and resource granularity reselection probability by network side equipment, wherein the timer information is used for indicating the duration of stopping executing LBT.

In a third aspect, a resource reselection apparatus is provided, which includes: a determining module and an executing module. The determining module is configured to determine the second resource according to the target information when the UE fails to perform the LBT on the first resource. An execution module to perform LBT on a second resource. Wherein the target information comprises at least one of: the method comprises the steps of configuring resources, timer information, resource type information and resource granularity reselection probability by network side equipment, wherein the timer information is used for indicating the duration of stopping executing LBT.

In a fourth aspect, a resource reselection apparatus is provided, which includes: and a sending module. A sending module, configured to send target information to a UE, where the target information is used for the UE to reselect a resource for performing LBT, and the target information includes at least one of: the method comprises the steps of configuring resources, timer information, resource type information and resource granularity reselection probability by network side equipment, wherein the timer information is used for indicating the duration of stopping executing LBT.

In a fifth aspect, there is provided a UE comprising a processor, a memory, and a program or instructions stored on the memory and executable on the processor, which when executed by the processor, implement the steps of the method according to the first aspect.

In a sixth aspect, a network-side device is provided, which comprises a processor, a memory, and a program or instructions stored on the memory and executable on the processor, wherein the program or instructions, when executed by the processor, implement the steps of the method according to the second aspect.

In a seventh aspect, a UE is provided, including a processor and a communication interface, where the processor is configured to determine, according to target information, a second resource in a case that the UE fails to perform LBT on a first resource; and performing LBT on the second resource. Wherein the target information comprises at least one of: the method comprises the steps of configuring resources, timer information, resource type information and resource granularity reselection probability by network side equipment, wherein the timer information is used for indicating the duration of stopping executing LBT.

In an eighth aspect, a network side device is provided, which includes a processor and a communication interface, where the communication interface is configured to send target information to a UE, and the target information is used for the UE to reselect a resource for performing LBT. Wherein the target information comprises at least one of: the method comprises the steps of configuring resources, timer information, resource type information and resource granularity reselection probability by network side equipment, wherein the timer information is used for indicating the duration of stopping executing LBT.

In a ninth aspect, there is provided a readable storage medium on which is stored a program or instructions which, when executed by a processor, carries out the steps of the method of the first aspect or the steps of the method of the second aspect.

In a tenth aspect, there is provided a communication system comprising the resource reselection apparatus of the third aspect and the resource reselection apparatus of the fourth aspect; alternatively, the communication system includes the UE according to the fifth aspect and the network side device according to the sixth aspect; alternatively, the communication system includes the UE according to the seventh aspect and the network side device according to the eighth aspect.

In an eleventh aspect, there is provided a chip comprising a processor and a communication interface, the communication interface being coupled to the processor, the processor being configured to execute a program or instructions to implement the method according to the first aspect, or to implement the method according to the second aspect.

In a twelfth aspect, there is provided a computer program/program product, stored in a non-transitory readable storage medium, which program/program product is executable by at least one processor to implement the steps of the resource reselection method as described in the first aspect, or to implement the steps of the resource reselection method as described in the second aspect.

In this embodiment, in case that the UE fails to perform LBT on the first resource, the UE may determine a second resource according to target information to perform LBT on the second resource, where the target information may include at least one of: the method comprises the steps of configuring resources by network side equipment, timer information indicating the time length for stopping executing the LBT, resource type information and resource granularity reselection probability. In the scheme, under the condition that the LBT is failed to be executed when the UE tries to acquire the transmission resources on the unauthorized spectrum resources, the UE can reselect a proper resource (namely, a second resource) according to the target information so as to execute the LBT operation on the resource, and for different target information, various modes for determining the reselected resource are provided, so that the communication requirement of data transmission between the UE is ensured, and the success rate of UE channel access is improved.

Drawings

Fig. 1 is a schematic architecture diagram of a communication system according to an embodiment of the present application;

fig. 2 is a flowchart of a resource reselection method provided in an embodiment of the present application;

fig. 3 is a second flowchart of a resource reselection method according to an embodiment of the present application;

fig. 4 is a schematic structural diagram of a resource reselection apparatus according to an embodiment of the present application;

fig. 5 is a second schematic structural diagram of a resource reselection apparatus according to a second embodiment of the present disclosure;

fig. 6 is a schematic hardware structure diagram of a communication device according to an embodiment of the present application;

fig. 7 is a schematic hardware structure diagram of a UE according to an embodiment of the present application;

fig. 8 is a schematic hardware structure diagram of a network-side device according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be described below clearly with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments that can be derived from the embodiments given herein by a person of ordinary skill in the art are intended to be within the scope of the present disclosure.

The terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application are capable of operation in other sequences than those illustrated or otherwise described herein, and that the terms "first" and "second" are generally used herein in a generic sense to distinguish one element from another, and not necessarily from another element, such as a first element which may be one or more than one. In addition, "and/or" in the specification and the claims means at least one of connected objects, and a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.

It is noted that the techniques described in the embodiments of the present application are not limited to Long Term Evolution (LTE)/LTE Evolution (LTE-Advanced) systems, but may also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), time Division Multiple Access (TDMA), frequency Division Multiple Access (FDMA), orthogonal Frequency Division Multiple Access (OFDMA), single-carrier Frequency-Division Multiple Access (SC-FDMA), and other systems. The terms "system" and "network" are often used interchangeably in embodiments of the present application, and the described techniques may be used for both the above-mentioned systems and radio technologies, as well as for other systems and radio technologies. The following description describes a New Radio (NR) system for exemplary purposes and NR terminology is used in much of the description below, but the techniques may also be applied to applications other than NR system applications, such as 6th generation (6 g) communication systems.

Fig. 1 shows a block diagram of a wireless communication system to which embodiments of the present application are applicable. The wireless communication system includes a terminal 11 and a network-side device 12. Wherein, the terminal 11 may also be called as a terminal Device or a User Equipment (UE), the terminal 11 may be a Mobile phone, a Tablet Personal Computer (Tablet Personal Computer), a Laptop Computer (Laptop Computer) or a notebook Computer, a Personal Digital Assistant (PDA), a palmtop Computer, a netbook, a super-Mobile Personal Computer (UMPC), a Mobile Internet Device (MID), a Wearable Device (Wearable Device) or a vehicle-mounted Device (VUE), a pedestrian terminal (PUE), and other terminal side devices, the Wearable Device includes: smart watches, bracelets, earphones, glasses, and the like. It should be noted that the embodiment of the present application does not limit the specific type of the terminal 11. The network-side device 12 may be a Base Station or a core network, where the Base Station may be referred to as a node B, an evolved node B, an access Point, a Base Transceiver Station (BTS), a radio Base Station, a radio Transceiver, a Basic Service Set (BSS), an Extended Service Set (ESS), a node B, an evolved node B (eNB), a home node B, a WLAN access Point, a WiFi node, a Transmit Receiving Point (TRP), or some other suitable terminology in the field, as long as the same technical effect is achieved, the Base Station is not limited to a specific technical vocabulary, and it should be noted that, in the embodiment of the present application, only the Base Station in the NR system is taken as an example, but a specific type of the Base Station is not limited.

The following explains some concepts and/or terms involved in a resource reselection method, apparatus, communication device, storage medium and system provided by the embodiments of the present application.

1. New Radio in Unlicensed Spectrum (NR-U) operating over Unlicensed Spectrum

In a communication protocol, a Radio Resource Control (RRC) configures a Listen Before Talk (LBT) failure recovery procedure (persistent LBT failure recovery) for a Media Access Control (MAC) entity, and if LBT detection is performed Before transmission and a channel is detected to be busy, a lower layer sends an LBT failure indication (LBT failure indication) to the MAC entity.

The persistent LBT failure is generated on a per BWP (for UL BWP) basis by the persistent LBT failure count of all Uplink (UL) transmissions from lower layers to the MAC entity. The parameter used by the UE for LBT failure counting is LBT _ COUNTER (on a per Serving Cell basis). The RRC configures two parameters for persistent LBT failure detection (persistent LBT failure detection) in an LBT-FailureRecoveryConfig, namely, an LBT-FailureInstanceinMaxCount and an LBT-FailureDetectionTimer. Whenever the MAC entity receives a lower layer LBT failure indication, the LBT _ COUNTER count is incremented by one. When LBT _ COUNTER > = LBT-failure interference maxcount, a passive LBT failure is triggered for an active uplink bandwidth part (active UL BWP) of a serving cell, and then, on the same carrier of the serving cell, a handover is made from the active UL BWP to another UL BWP where a Physical Random Access Channel (PRACH) occasion is configured and the passive LBT failure is not yet triggered, and LBT continues to be performed at the UL BWP. If all UL BWPs of the serving cell trigger the persistent LBT failure, the persistent LBT failure is indicated to the higher layer.

In the communication protocol, the eNB/gNB may access according to a Downlink (DL) channel of the nodeB itself, or the UE initiates channel occupancy sharing (channel occupancy sharing) according to UL channel access. The eNB/gNB/UE may determine a maximum COT by Channel Access Priority Class (CAPC) (as shown in table 1). For channel Access priorities p =3 and p =4, if it is guaranteed in the long term that no other Radio Access Technology (RAT) shares the channel (e.g. the relevant protocol limit), tm cot, p =10ms; otherwise, tm cot, p =8ms.

TABLE 1 channel Access priority

The resource reselection method provided by the embodiments of the present application is described in detail below with reference to the accompanying drawings by using some embodiments and application scenarios thereof.

Generally, in the process of communication between the UE and the network side device, the network side device may preempt an unlicensed spectrum resource for the UE, and the UE may perform data transmission with the network side device according to different channel access modes within one channel occupation time through the unlicensed spectrum resource, thereby implementing communication between the UE and the network side device.

However, the unlicensed spectrum resource preempted by the network side device may only be used for communication between the network side device and the UE, and the UE cannot communicate with the unlicensed spectrum resource preempted by the network side device, which causes a persistent LBT failure when the UE attempts to acquire the transmission resource on the unlicensed spectrum, thereby resulting in a low success rate of UE channel access.

In order to solve the above technical problem, in this embodiment, in a case that the UE fails to perform LBT on the first resource, the UE may determine a second resource according to the target information to perform LBT on the second resource. Wherein the target information comprises at least one of: the network side equipment comprises the configured resources, timer information indicating the time length for stopping executing the LBT, resource type information and resource granularity reselection probability. According to the scheme, under the condition that the LBT is failed to be executed when the UE tries to acquire the transmission resources on the unauthorized frequency spectrum resources, the UE can reselect proper resources (namely second resources) according to the target information so as to execute the LBT operation on the resources, and for different target information, various modes for determining the reselected resources are provided, so that the communication requirement of data transmission between the UE is ensured, and the success rate of UE channel access is improved.

It should be noted that, in the unlicensed spectrum, the UE may perform resource selection based on different resource selection granularities, for example, resource selection based on a carrier (carrier), resource selection based on a Bandwidth Part (BWP), or resource selection based on a resource pool (resource pool). The UE may support Sidelink (SL) transmission on one or more carriers on the unlicensed spectrum according to its own terminal capability. Further, one carrier may contain one or more bandwidth parts, and one bandwidth part may contain one or more resource pools.

An embodiment of the present application provides a resource reselection method, and fig. 2 shows a flowchart of the resource reselection method provided in the embodiment of the present application. As shown in fig. 2, the resource reselection method provided in the embodiment of the present application may include steps 21 to 23 described below.

Step 21, under the condition that the UE fails to execute LBT on the first resource, the UE acquires target information.

Wherein the target information includes at least one of: the method comprises the steps of configuring resources, timer information, resource type information and resource granularity reselection probability by network side equipment, wherein the timer information is used for indicating the duration of stopping executing LBT.

And step 22, the UE determines a second resource according to the target information.

Step 23, the UE performs LBT on the second resource.

Optionally, in this embodiment of the application, the target information may be determined by any one of: protocol agreement, network side device pre-configuration, network side device configuration, other user equipment indication, and UE autonomous decision.

Alternatively, in the embodiment of the present application, as shown in fig. 3 in combination with fig. 2, the step 21 may be specifically implemented by a step 21a and a step 21b described below.

Step 21a, the network side equipment sends the target information to the UE.

And step 21b, the UE receives the target information sent by the network side equipment.

In the resource reselection method provided in this embodiment, a method for the UE to determine the second resource (step 22) according to the target information is described in the following four embodiments.

In the first embodiment, in the case that the target information includes resources configured by the network side device, the method for the UE to determine the second resource according to the target information may include step 201 (or step 202 and step 203, or step 202 and step 204) described below.

Step 201, the UE determines a resource preconfigured by the network side device as a second resource.

Step 202, the network side device sends a second message to the UE.

Step 203, the UE receives a second message sent by the network side device, and determines a third resource included in the configuration information as the second resource when the second message includes the configuration information.

Step 204, the UE receives a second message sent by the network side device, and determines the fourth resource as the second resource when the second message does not include the configuration information and indicates that the UE is allowed to perform the LBT resource reselection.

In this embodiment of the present application, the fourth resource is a resource that does not trigger a failure of consecutive LBT.

It should be noted that the resources that do not trigger the failure of consecutive LBT may be understood as: resources with lower frequency of triggering LBT failure, or resources with LBT failure not yet triggered.

In an embodiment of the present application, in an implementation manner, a UE may determine a resource preconfigured by a network side device as a second resource; in another implementation manner, the UE may determine a resource (i.e., a third resource) currently configured by the network side device as the second resource; in still another implementation, the UE may determine, as the second resource, a resource that does not trigger consecutive LBT failures according to a message that the network side device indicates that the UE is allowed to perform LBT resource reselection.

In the embodiment of the present application, the UE may determine a resource (pre) configured by the network side device or an autonomously selected resource as the second resource to perform the LBT operation on the resource, so as to ensure a communication requirement for data transmission between UEs, thereby improving a success rate of UE channel access.

Alternatively, in this embodiment of the application, the step 202 and the step 203 may be specifically implemented by the following steps 202a to 202 d.

Step 202a, the UE sends a first message to the network side device.

Step 202b, the network side device receives a first message sent by the UE.

In this embodiment of the present application, the first message is used to request LBT resource reselection.

Optionally, in this embodiment of the application, the first message includes at least one of the following: a first resource, a frequency on which the UE performs LBT failure on the first resource.

Optionally, in this embodiment of the present application, the first message includes the first resource; or, the first message includes a frequency at which the UE fails to perform LBT on the first resource; alternatively, the first message includes both the first resource and a frequency at which the UE failed to perform LBT on the first resource.

It should be noted that, the frequency of LBT failure performed by the UE on the first resource may be understood as: the number of times the UE fails to perform LBT is a proportion of the total number of times the UE performs LBT. For example, if the UE performs LBT on the first resource 10 times, wherein there are 8 LBT failures, the frequency of LBT failures performed by the UE on the first resource is 0.8.

It can be appreciated that the higher the frequency of failure of the UE to perform LBT on the first resource, the first resource is not available and a suitable resource needs to be reselected.

Step 202c, the network side device sends a second message to the UE.

In this embodiment, the second message includes configuration information.

Step 202d, the UE receives the second message sent by the network side device, and determines the third resource included in the configuration information as the second resource.

In the embodiment of the application, the network side equipment can perform resource reconfiguration on the UE, and the message indicating the reconfiguration carries the third resource, so that the UE executes LBT operation on the third resource, the communication requirement of data transmission between the UE is ensured, and the success rate of UE channel access is improved.

In this embodiment, based on different resource granularities, when the UE fails to perform LBT on different resource hierarchies, the UE may perform resource reconfiguration independently selected or cooperated by the network side device, respectively. The following describes a first embodiment specifically, taking the case where the UE is reconfigured from the network-side device cooperative resource at the BWP resource level.

In case one, the network side device configures an active SL BWP for the UE, and in case that the UE triggers persistent LBT failure (persistent LBT failure) on a resource pool (i.e. a first resource) of the active SL BWP, the UE autonomously reselects to a resource pool (i.e. a second resource) that does not trigger persistent LBT failure, so as to perform LBT operation on the resource pool.

In case two, the network side device configures an active sidelink bandwidth part for the UE, and in case that the UE triggers persistent LBT failure on all resource pools of the active sidelink bandwidth part (i.e. the first resource):

1) If the network-side device pre-configures a target SL BWP (i.e., the second resource) for the SL BWP reselection for the UE, the UE reselects to the target SL BWP to perform the LBT operation on the target SL BWP.

2) If the network-side device does not pre-configure any SL BWP for the UE, the UE reports information related to persistent LBT failure to the network-side device to request LBT resource reselection, where the information includes a BWP resource (i.e., a first resource) triggering the persistent LBT failure and/or a frequency/frequency of the persistent LBT failure triggered by the UE on the BWP resource;

a) If the network side device performs SL BWP resource reconfiguration on the UE and the message indicating the SL BWP reconfiguration carries the target SL BWP, the UE reselects to the target SL BWP to perform LBT operation on the target SL BWP;

b) If the network side device performs SL BWP resource reconfiguration on the UE, but the message indicating the SL BWP reconfiguration does not carry any resource, the UE autonomously reselects to a SL BWP that does not trigger persistent LBT failure, so as to perform LBT operation on the SL BWP.

In case three, the network side device configures one carrier for the UE, and in case that the UE triggers persistent LBT failure on all SL BWPs of the carrier (i.e. the first resource):

1) If enough Uplink Shared Channel (UL-SCH) resources are used for reporting an LBT failure MAC Control Element (CE) and a subheader thereof by the UE, the UE generates an LBT failure MAC CE and reports the LBT failure MAC CE to the network side device;

2) If there is not enough UL-SCH resource for the UE to report the LBT failure MAC CE and its subheader, the UE triggers a Scheduling Request (SR) to report the LBT failure MAC CE.

In the second embodiment, in the case that the target information includes timer information, the method for the UE to determine the second resource according to the target information may include step 301 or step 302 described below.

Step 301, under the condition that the first timer information is preconfigured in the UE, after the timer reaches the first duration indicated by the first timer information, the UE determines the fifth resource as the second resource.

In an embodiment of the present application, the fifth resource is any one of: the resource pre-configured by the network side equipment and the resource autonomously selected by the UE.

Optionally, in this embodiment of the present application, the first timer information may be timer information preconfigured by the network side device for the UE.

Optionally, in this embodiment of the present application, if the network side device preconfigured the first timer information for the UE, after the timer reaches the first time length indicated by the first timer information, the UE may determine the resource preconfigured by the network side device as the second resource; alternatively, the UE may autonomously reselect a resource and determine the autonomously reselected resource as the second resource.

Step 302, under the condition that the first timer information is not preconfigured in the UE, the UE receives second timer information sent by the network side device, and determines the sixth resource as the second resource after the timer reaches the second duration indicated by the second timer information.

In an embodiment of the application, the sixth resource is any one of: the resources configured by the network side equipment, the resources configured by the network side equipment through the configuration information, and the resources selected by the UE autonomously.

Optionally, in this embodiment of the application, the first duration and the second duration may be the same or different.

Optionally, in this embodiment of the present application, the method for configuring, by the network side device, the resource for the UE through the configuration information may include: and the UE receives the message sent by the network side equipment and takes the resource included in the configuration information as a sixth resource.

Optionally, in this embodiment of the present application, the UE may receive second timer information sent by the network side device, so that after the timer reaches a second duration indicated by the second timer information, the UE determines a resource preconfigured by the network side device as a second resource; or, the UE determines the resource currently configured by the network side device as the second resource; alternatively, the UE may autonomously reselect a resource and determine the autonomously reselected resource as the second resource.

In the embodiment of the application, the UE may select a suitable resource based on the preconfigured timer information or the currently configured timer information, so as to perform LBT operation on the resource, thereby ensuring a communication requirement for data transmission between UEs, and improving a success rate of UE channel access.

Optionally, in this embodiment of the present application, the step 302 may be specifically implemented by the following steps 302a to 302 d.

Step 302a, the UE sends a third message to the network side device.

Step 302b, the network side device receives a third message sent by the UE.

In this embodiment of the present application, the third message is used to indicate that the UE fails to perform LBT on the first resource.

Optionally, in this embodiment of the application, the third message may include a reason why the UE fails to perform LBT on the first resource, for example, a channel is busy, an overheat scenario, a low power level, and the like.

Step 302c, the network side device sends a fourth message to the UE.

Step 302b, the UE receives a fourth message sent by the network side device.

In this embodiment of the application, the fourth message includes second timer information.

In the embodiment of the application, the UE may receive the second timer information configured by the network side device, so as to determine the reselected second resource after the duration indicated by the second timer information, thereby ensuring the communication requirement for data transmission between UEs, and improving the success rate of UE channel access.

Optionally, in this embodiment of the present application, the resource reselection method provided in this embodiment of the present application further includes steps 303 and 304 described below.

Step 303, the UE stops performing LBT when the timer does not reach the target duration.

And step 304, after the timer reaches the target duration, the UE clears the LBT counter.

In the embodiment of the present application, the target duration is a first duration or a second duration.

Optionally, in this embodiment of the present application, the LBT counter is used to record the number of times the UE performs LBT.

In the embodiment of the application, because a plurality of other UEs possibly occupy the resources within the target duration, the UE does not execute the LBT within the target duration, and the LBT counter is cleared after the target duration so as to execute the LBT operation again, thereby ensuring the communication requirement of data transmission between the UEs and improving the success rate of UE channel access.

In this embodiment, when the UE fails in Out-of-Coverage (OOC), low battery, or overheating scenarios triggering persistent LBT, the UE may not perform LBT for the duration indicated by the timer based on a (pre-) configured timer (timer), and may perform LBT operation again after the timer expires. The second embodiment will be specifically described below, taking the UE at the SL carrier resource level as an example.

In case all SL BWPs under SL carrier of UE triggered persistent LBT failure:

1) If the network-side device pre-configures a timer (i.e. the first timer information) for the UE, the UE stops LBT within a duration T0 indicated by the timer, and after the timer expires, clears the LBT counter, and then reselects to a default SL BWP (default SL BWP) pre-configured by the network-side device, or autonomously reselects to any SL BWP, so as to perform LBT operation on the default SL BWP or any resource pool on the SL BWP.

2) If the network-side device does not pre-configure a timer for the UE, the UE reports a sidelink carrier persistent LBT failure to the network-side device, and may also report a reason of the persistent LBT failure (e.g., channel Busy/Overheating/low power (LowPower)), the UE may receive a timer (i.e., second counter information) configured by the network-side device, stop the LBT within a duration T1 indicated by the timer, and clear the LBT counter after the timer expires, and then reselect to a default SL BWP pre-configured by the network-side device, or reselect to a SL BWP configured by the network-side device according to configuration information, or autonomously reselect to any SL BWP to perform an LBT operation on any resource pool on the SL BWP.

In a third embodiment, the target information includes resource type information indicating a first type of resource and a second type of resource, and the method for the UE to determine the second resource according to the target information may include step 401 as described below.

Step 401, the UE determines the second type resource as a second resource.

In the embodiment of the application, the priority of the first type resource is higher than that of the second type resource.

Optionally, in this embodiment of the present application, the first type of resource is a dedicated resource, and the second type of resource is a shared resource; or the first type of resource is an unlicensed spectrum resource, and the second type of resource is a licensed spectrum resource.

It should be noted that, since the dedicated resources and the unlicensed spectrum resources are relatively difficult to obtain, the UE generally preferentially uses the dedicated resources or the unlicensed spectrum resources.

In this embodiment of the present application, the first resource may be a first type resource, that is, the UE may reselect to a low-priority resource when the LBT performed on the high-priority resource fails, so as to perform the LBT operation on the low-priority resource, thereby ensuring a communication requirement for data transmission between UEs, and improving a success rate of UE channel access.

Optionally, in this embodiment of the present application, before the step 401, the resource reselection method provided in this embodiment of the present application further includes the following steps 402 to 405.

Step 402, the UE sends a fifth message to the network side device.

Step 403, the network side device receives a fifth message sent by the UE.

In this embodiment of the present application, the fifth message is used to instruct the UE to perform LBT failure on the first type resource or the second type resource.

Step 404, the network side device sends resource type information to the UE.

Step 405, the UE receives resource type information sent by the network side device.

In the embodiment of the present application, since the network side device configures the first type resource and the second type resource for the UE, when the UE fails to perform LBT on the first type resource or the second type resource, the UE may reselect to the second type resource (i.e., a low priority resource) to perform LBT operation on the second type resource, thereby ensuring a communication requirement for data transmission between UEs, and improving a success rate of UE channel access.

In this embodiment, for an area, if it is guaranteed that no other radio access technology shares the channel in the long term (e.g., the relevant protocol restriction), the network side device may configure different types of resources for the UE, such as dedicated resources or shared resources, and the UE performs LBT operation on the dedicated resources or the shared resources. In addition, the resource type used for sidelink transmission may also be a licensed spectrum type or an unlicensed spectrum type within the coverage of the network side device by the UE. The third embodiment is specifically described below by taking the UE at the resource pool resource level as an example.

1) The network side equipment configures dedicated resource pool and shared resource pool for the UE, and the UE preferentially uses the dedicated resource pool:

a) If the UE triggers persistent LBT failure on the dedicated resource pool configured by the network side device, the UE reports to the network side device that LBT failure is performed on the dedicated resource pool, and reselects from the dedicated resource pool to the shared resource pool.

B) If the UE fails to trigger the persistent LBT on the shared resource pool configured by the network side equipment, the UE reports the failure of executing the LBT on the shared resource pool to the network side equipment.

2) The network side equipment configures unlicensed spectrum resource pool and licensed spectrum resource pool for the UE, and the UE preferentially uses the unlicensed spectrum resource pool:

a) If the UE triggers persistent LBT failure on the unlicensed spectrum resource pool configured by the network side device, the UE reports to the network side device that LBT failure is performed on the unlicensed spectrum resource pool, and reselects from the unlicensed spectrum resource pool to a licensed spectrum resource pool.

B) If the UE triggers the persistent LBT failure on the authorized spectrum resource pool configured by the network side device, the UE reports to the network side device that the LBT failure is performed on the authorized spectrum resource pool.

In a fourth embodiment, in a case that the target information includes a resource granularity reselection probability, the method for the UE to determine the second resource according to the target information may include step 501 or step 502 described below.

Step 501, under the condition that the resource granularity reselection probability meets the preset condition, the UE determines the seventh resource as the second resource.

In this embodiment of the present application, the seventh resource is a resource that does not trigger a failure of consecutive LBT.

Optionally, in this embodiment of the application, the resource granularity reselection probability may be a resource granularity reselection probability corresponding to the first resource.

Optionally, in this embodiment of the present application, the condition that the resource granularity reselection probability meets the preset condition is: the random number associated with the resource granularity reselection probability falls within the range of the resource reselection probability. Exemplarily, assuming that the resource granularity reselection probability is 30%, if the random number falls within [ 0, 30 ], the UE needs to reselect the resource.

It should be noted that the resource that does not trigger the failure of consecutive LBT may be understood as: the resource with lower frequency of triggering LBT failure or the resource with LBT failure is not triggered.

Step 502, under the condition that the resource granularity reselection probability does not meet the preset condition, the UE determines the first resource as a second resource.

Exemplarily, assuming that the probability of resource granularity reselection is 30%, if the random number falls outside [ 30, 100 ], the UE does not perform resource reselection and still performs LBT operation on the current resource.

In the embodiment of the application, the UE can determine whether to reselect the resource according to the resource granularity reselection probability so as to execute the LBT operation on the first resource or the reselected resource, thereby ensuring the communication requirement of data transmission between the UEs and improving the success rate of UE channel access.

In this embodiment, the network side device may configure, according to the capability of the UE, a SL carrier that can perform transmission on the unlicensed spectrum and multiple SL BWPs on the SL carrier for the UE, and multiple SL resource spots may be configured on each SL BWP. The network side device may choose whether to (pre) configure the BWP reselection probability and/or the resource pool reselection probability for the UE. According to different resource granularities, the UE can execute resource reselection or report persistent LBT failure according to the resource reselection probability. For example, if the network-side device (pre) configures the BWP reselection probability/resource pool reselection probability, the UE may determine whether to perform BWP reselection/resource pool reselection according to the BWP reselection probability/resource pool reselection probability when the persistent LBT is failed to be triggered. If the network side device does not configure the BWP reselection probability/resource pool reselection probability, the UE may reselect the BWP autonomously, and the UE does not report the persistent LBT failure to the network side device until all SL BWPs on the SL carrier trigger the persistent LBT failure. The fourth embodiment will be specifically described below by taking the UE at the resource pool resource level as an example.

In case one, the network side device configures one active SL BWP for the UE, and when the UE triggers a dependent LBT failure on one resource pool of the active SL BWP:

1) If the network side device configures resource pool reselection probability based on each resource pool (for resource pool) (i.e. each resource pool corresponds to one resource pool reselection probability) or resource pool reselection probability based on all resource pools (for all resource pools) (i.e. all resource pools correspond to one resource pool reselection probability) for the UE;

a) The UE decides to reselect the resource pool according to the probability, and the UE can reselect to other resource pools without triggering the consensumpt failure under the active SL BWP so as to execute the LBT operation on the resource pools;

b) The UE does not perform resource pool reselection according to the probability and still performs the LBT operation on the current resource pool.

2) If the network side device does not configure resource pool reselection probability for the UE, the UE autonomously reselects to other resource pools that do not trigger the persistent LBT failure under the active SL BWP, so as to perform LBT operation on the resource pools.

And the second case, the network side equipment configures one active SL BWP for the UE, and when the UE triggers the dependent LBT failure on all resource spots of the active SL BWP:

1) If the network side device configures the BWP reselection probability based on each bandwidth part (for per BWP) or based on all bandwidth parts (for all BWPs) for the UE;

a) The UE decides to reselect the SL BWP according to the probability, and the UE can reselect other SL BWPs which do not trigger the consenting LBT failure under the SL carrier so as to execute LBT operation on the SL BWP;

b) The UE does not perform SL BWP reselection according to this probability, and still performs LBT operation on the current SL BWP.

2) If the network side device does not configure the BWP reselection probability for the UE, the UE autonomously reselects to other SL BWPs under the SL carrier that do not trigger the dependent LBT failure, so as to perform LBT operation on the SL BWPs.

According to the resource reselection method provided by the embodiment of the application, because various modes for determining the reselection resources are provided for different target information, under the condition that the UE fails to trigger the LBT based on different resource granularities, the resources can be reselected in a proper mode to execute the LBT operation on the resources, the communication requirement of data transmission between the UE is ensured, and the success rate of UE channel access is improved.

Optionally, in this embodiment of the present application, the resource reselection method provided in this embodiment of the present application further includes steps 601 to 604 described below.

Step 601, the network side device sends a sixth message to the UE.

Step 602, the UE receives a sixth message sent by the network side device.

In this embodiment of the application, the sixth message includes sidelink unlicensed spectrum resources.

In this embodiment, the network side device may configure, through the sixth message, an unlicensed spectrum resource for LBT detection to the connected UE, so that the UE performs LBT detection on the unlicensed spectrum resource, and reports an LBT detection result to the network side device.

Optionally, in this embodiment of the application, the sixth message may be a System Information Block (SIB) message.

Optionally, in this embodiment of the application, the sixth message may carry an LBT detection period, and the UE may perform LBT detection based on the LBT detection period.

Step 603, the UE performs LBT detection on the sidelink unlicensed spectrum resource, and sends an LBT detection result to the network side device.

Step 604, the network side device receives the LBT detection result sent by the UE.

Optionally, in this embodiment of the present application, the LBT detection result may assist the UE to perform autonomous resource selection on the sidelink unlicensed spectrum.

Optionally, in this embodiment of the present application, the LBT detection result may be that the UE successfully performs LBT on a certain resource, or may be that the UE fails to perform LBT on a certain resource.

It should be noted that the resource reselection method provided in the embodiment of the present application may also be executed alone, that is, steps 601 to 604 provided in the embodiment of the present application may be executed without executing steps 21 to 23.

In the embodiment of the present application, when the UE has no communication requirement, the network side device may configure an unlicensed spectrum resource for the UE, so that the UE performs LBT detection on the unlicensed spectrum resource, and sends an LBT detection result to the network side device; when the UE has a communication requirement, the network side equipment indicates idle resources to the UE so as to assist the UE to select proper resources.

It should be noted that, in the resource reselection method provided in the embodiment of the present application, the execution subject may also be a resource reselection device, or a control module in the resource reselection device, which is used for executing the resource reselection method.

Fig. 4 shows a schematic diagram of a possible structure of a resource reselection device involved in the embodiment of the present application. As shown in fig. 4, the resource reselection device 40 may include: a determination module 41 and an execution module 42.

Wherein, the determining module 41 is configured to determine the second resource according to the target information in a case that the UE fails to perform LBT on the first resource. An executing module 42, configured to execute LBT on the second resource. Wherein the target information comprises at least one of: the method comprises the steps of configuring resources, timer information, resource type information and resource granularity reselection probability by network side equipment, wherein the timer information is used for indicating the duration of stopping executing LBT.

In a possible implementation manner, in a case that the target information includes a resource configured by the network-side device, the determining module 41 is specifically configured to determine the resource pre-configured by the network-side device as a second resource; or, the determining module 41 is specifically configured to receive a second message sent by the network side device, determine, when the second message includes the configuration information, a third resource included in the configuration information as the second resource, and when the second message does not include the configuration information and indicates that the UE is allowed to perform LBT resource reselection, determine, as the second resource, a fourth resource that is a resource that does not trigger consecutive LBT failure.

In a possible implementation manner, the determining module 41 is specifically configured to send a first message to a network side device, where the first message is used to request LBT resource reselection; and receiving a second message sent by the network side equipment, wherein the second message comprises configuration information.

In a possible implementation manner, the first message includes at least one of the following: a first resource, a frequency on which the UE performs LBT failure on the first resource.

In a possible implementation manner, in a case that the target information includes timer information, the determining module 41 is specifically configured to, in a case that the first timer information is preconfigured in the UE, determine, after a time that the timer reaches a first duration indicated by the first timer information, a fifth resource as the second resource, where the fifth resource is any one of: the resource pre-configured by the network side equipment and the resource autonomously selected by the UE; or, the determining module 41 is specifically configured to receive, when the first timer information is not preconfigured in the UE, second timer information sent by the network side device, and determine, after the timer reaches a second duration indicated by the second timer information, a sixth resource as the second resource, where the sixth resource is any of the following: the resource configured by the network side equipment, the resource configured by the network side equipment through the configuration information, and the resource autonomously selected by the UE.

In a possible implementation manner, the determining module 41 is specifically configured to send a third message to the network side device, where the third message is used to instruct the UE to perform LBT failure on the first resource; and receiving a fourth message sent by the network side equipment, wherein the fourth message comprises second timer information.

In a possible implementation manner, the resource reselection apparatus 40 further includes: and clearing the module. The executing module 42 is further configured to stop executing the LBT if the timer does not reach the target duration. And the clearing module is used for clearing the LBT counter after the timer reaches a target time length, wherein the target time length is a first time length or a second time length.

In a possible implementation manner, the target information includes resource type information, and the resource type information is used to indicate the first type of resource and the second type of resource. The determining module 41 is specifically configured to determine the second type resource as the second resource, where the priority of the first type resource is higher than the priority of the second type resource.

In a possible implementation manner, the resource reselection apparatus 40 further includes: the device comprises a sending module and a receiving module. A sending module, configured to send a fifth message to the network side device before determining the second type of resource as the second resource, where the fifth message is used to instruct the UE to perform LBT failure on the first type of resource or the second type of resource. And the receiving module is used for receiving the resource type information sent by the network side equipment.

In a possible implementation manner, the first type resource is a dedicated resource, and the second type resource is a shared resource; or, the first type resource is an unlicensed spectrum resource, and the second type resource is a licensed spectrum resource.

In a possible implementation manner, in a case that the target information includes a resource granularity reselection probability, the determining module 41 is specifically configured to determine a seventh resource as the second resource when the resource granularity reselection probability meets a preset condition, where the seventh resource is a resource that does not trigger a continuous LBT failure; or, the determining module 41 is specifically configured to determine the first resource as the second resource when the resource granularity reselection probability does not meet the preset condition.

In a possible implementation manner, the resource reselection apparatus 40 further includes: the device comprises a receiving module and a sending module. A receiving module, configured to receive a sixth message sent by a network side device, where the sixth message includes sidelink unlicensed spectrum resources. The executing module 42 is further configured to perform LBT detection on the sidelink unlicensed spectrum resource. And the sending module is used for sending the LBT detection result to the network side equipment.

The embodiment of the present application provides a resource reselection device, where, when a UE fails to perform LBT when attempting to acquire transmission resources on an unlicensed spectrum resource, the resource reselection device may reselect a suitable resource (i.e., a second resource) according to target information to perform LBT operation on the resource, and for different target information, multiple ways of determining reselected resources are provided, so as to ensure a communication requirement for data transmission between UEs, thereby improving a success rate of channel access.

The resource reselection device in the embodiment of the present application may be a device, a device with an operating system, or a UE, and may also be a component, an integrated circuit, or a chip in the UE. The apparatus or UE may be a mobile terminal or a non-mobile terminal. By way of example, the mobile terminal may include, but is not limited to, the UE 11 of the type listed above, and the non-mobile terminal may be a server, a Network Attached Storage (NAS), a Personal Computer (PC), a Television (Television), a teller machine, a self-service machine, or the like, and the embodiments of the present application are not limited in particular.

The resource reselection device provided in the embodiment of the present application can implement each process implemented by the UE in the above method embodiments, and achieve the same technical effect, and for avoiding repetition, the details are not repeated here.

Fig. 5 shows a schematic diagram of a possible structure of a resource reselection apparatus involved in the embodiment of the present application. As shown in fig. 5, the resource reselection apparatus 50 may include: a determination module 51 and a sending module 52.

The determining module 51 is configured to obtain the target information. A sending module 52, configured to send target information to the UE, where the target information is used for the UE to reselect resources for performing LBT, and the target information includes at least one of the following: the method comprises the steps of configuring resources, timer information, resource type information and resource granularity reselection probability by network side equipment, wherein the timer information is used for indicating the duration of stopping executing LBT.

In a possible implementation manner, in a case that the target information includes resources configured by the network-side device, the sending module 52 is specifically configured to send the second message to the UE. Wherein, the second message includes configuration information, and the configuration information includes a third resource; or, the second message does not include configuration information, and the second message indicates that the UE is allowed to perform LBT resource reselection.

In a possible implementation manner, the sending module 52 is specifically configured to receive a first message sent by the UE, where the first message is used to request LBT resource reselection; and sending a second message to the UE, the second message including the configuration information.

In a possible implementation manner, in a case that the target information includes timer information, the sending module 52 is specifically configured to send, to the UE, second timer information, where the second timer information is used for determining, by the UE, a sixth resource as a resource for the UE to reselect and perform LBT after a timer reaches a second duration indicated by the second timer information, where the sixth resource is any of: the resource configured by the network side equipment, the resource configured by the network side equipment through the configuration information, and the resource autonomously selected by the UE.

In a possible implementation manner, the sending module 52 is specifically configured to receive a third message sent by the UE, where the third message is used to indicate that the UE fails to perform LBT on the first resource; and sending a fourth message to the UE, the fourth message including the second timer information.

In a possible implementation manner, the target information includes resource type information, where the resource type information is used to indicate a first type of resource and a second type of resource, and a priority of the first type of resource is higher than a priority of the second type of resource. The sending module 52 is specifically configured to receive a fifth message sent by the UE, where the fifth message is used to indicate that the UE fails to perform LBT on the first type of resource or the second type of resource; and transmits resource type information to the UE.

In a possible implementation manner, the resource reselection apparatus 50 further includes: and a receiving module. The sending module 52 is configured to send a sixth message to the UE, where the sixth message includes the sidelink unlicensed spectrum resource. The receiving module is further configured to receive an LBT detection result sent by the UE, where the LBT detection result is a result of the UE performing LBT detection on the side-link unlicensed spectrum resource.

The embodiment of the application provides a resource reselection device, which can send target information to a UE, so that the UE reselects a suitable resource (i.e., a second resource) according to the target information to perform an LBT operation on the resource, and for different target information, multiple ways of determining the reselected resource are provided, thereby ensuring a communication requirement for data transmission between UEs, and improving a success rate of channel access.

The resource reselection apparatus in the embodiment of the present application may be an apparatus or a network side device, and may also be a component, an integrated circuit, or a chip in the network side device.

The resource reselection device provided in this embodiment of the present application can implement each process implemented by the network side device in the foregoing method embodiments, and achieve the same technical effect, and for avoiding repetition, details are not described here again.

Optionally, as shown in fig. 6, an embodiment of the present application further provides a communication device 600, which includes a processor 601, a memory 602, and a program or an instruction stored on the memory 602 and executable on the processor 601, for example, when the communication device 600 is a UE, the program or the instruction is executed by the processor 601 to implement the processes on the UE side in the foregoing method embodiments, and the same technical effect can be achieved. When the communication device 600 is a network-side device, the program or the instruction is executed by the processor 601 to implement the processes of the network-side device according to the foregoing method embodiments, and the same technical effects can be achieved.

The embodiment of the present application further provides a UE, including a processor and a communication interface, where the processor is configured to determine a second resource according to target information when the UE fails to perform LBT on a first resource; and performing LBT on the second resource. Wherein the target information comprises at least one of: the method comprises the steps of configuring resources, timer information, resource type information and resource granularity reselection probability by network side equipment, wherein the timer information is used for indicating the duration of stopping executing LBT. The UE embodiment corresponds to the UE side method embodiment, and all implementation processes and implementation manners of the method embodiment can be applied to the UE embodiment, and the same technical effects can be achieved. Specifically, fig. 7 is a schematic diagram of a hardware structure of a UE implementing the embodiment of the present application.

The UE 100 includes but is not limited to: at least some of the radio frequency unit 101, the network module 102, the audio output unit 103, the input unit 104, the sensor 105, the display unit 106, the user input unit 107, the interface unit 108, the memory 109, and the processor 110.

Those skilled in the art will appreciate that the UE 100 may further include a power supply (e.g., a battery) for supplying power to various components, which may be logically connected to the processor 110 via a power management system, so as to manage charging, discharging, and power consumption management functions via the power management system. The UE structure shown in fig. 7 does not constitute a limitation of the UE, and the UE may include more or less components than those shown, or combine some components, or arrange different components, and thus, the description is not repeated herein.

It should be understood that, in the embodiment of the present application, the input Unit 104 may include a Graphics Processing Unit (GPU) 1041 and a microphone 1042, and the Graphics Processing Unit 1041 processes image data of a still picture or a video obtained by an image capturing device (such as a camera) in a video capturing mode or an image capturing mode. The display unit 106 may include a display panel 1061, and the display panel 1061 may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like. The user input unit 107 includes a touch panel 1071 and other input devices 1072. The touch panel 1071 is also referred to as a touch screen. The touch panel 1071 may include two parts of a touch detection device and a touch controller. Other input devices 1072 may include, but are not limited to, a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, and a joystick, which are not described in detail herein.

In the embodiment of the present application, the radio frequency unit 101 receives downlink data from a network side device and then processes the downlink data to the processor 110; in addition, the uplink data is sent to the network side equipment. Typically, radio frequency unit 101 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like.

The memory 109 may be used to store software programs or instructions as well as various data. The memory 109 may mainly include a storage program or instruction area and a storage data area, wherein the storage program or instruction area may store an operating system, an application program or instruction (such as a sound playing function, an image playing function, etc.) required for at least one function, and the like. In addition, the Memory 109 may include a high-speed random access Memory, and may further include a nonvolatile Memory, wherein the nonvolatile Memory may be a Read-Only Memory (ROM), a Programmable Read-Only Memory (PROM), an Erasable Programmable Read-Only Memory (EPROM), an Electrically Erasable Programmable Read-Only Memory (EEPROM), or a flash Memory. Such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid state storage device.

Processor 110 may include one or more processing units; alternatively, the processor 110 may integrate an application processor that primarily handles operating systems, user interfaces, and applications or instructions, etc., and a modem processor that primarily handles wireless communications, such as a baseband processor. It will be appreciated that the modem processor described above may not be integrated into the processor 110.

Wherein, the processor 110 is configured to determine, according to the target information, a second resource in a case that the UE fails to perform LBT on the first resource; and performing LBT on the second resource. Wherein the target information comprises at least one of: the method comprises the steps of configuring resources, timer information, resource type information and resource granularity reselection probability by network side equipment, wherein the timer information is used for indicating the duration of stopping executing LBT.

The embodiment of the present application provides a UE, where, when the UE fails to perform LBT when attempting to acquire transmission resources on unlicensed spectrum resources, the UE may reselect a suitable resource (i.e., a second resource) according to target information to perform LBT operation on the resource, and for different target information, multiple ways of determining to reselect the resource are provided, so as to ensure a communication requirement for data transmission between UEs, thereby improving a success rate of UE channel access.

Optionally, in a case that the target information includes a resource configured by the network-side device, the processor 110 is specifically configured to determine the resource pre-configured by the network-side device as a second resource; or, the processor 110 is specifically configured to receive a second message sent by the network-side device, determine, when the second message includes configuration information, a third resource included in the configuration information as the second resource, and when the second message does not include the configuration information and indicates that the UE is allowed to perform LBT resource reselection, determine, as a fourth resource, the fourth resource being a resource that does not trigger consecutive LBT failure.

Optionally, the processor 110 is specifically configured to send a first message to the network side device, where the first message is used to request LBT resource reselection; and receiving a second message sent by the network side equipment, wherein the second message comprises configuration information.

Optionally, when the target information includes timer information, the processor 110 is specifically configured to, when the first timer information is preconfigured in the UE, determine, after a timer reaches a first duration indicated by the first timer information, a fifth resource as the second resource, where the fifth resource is any one of: the resource pre-configured by the network side equipment and the resource autonomously selected by the UE; or, the processor 110 is specifically configured to receive, when the first timer information is not preconfigured in the UE, second timer information sent by the network side device, and determine, after the timer reaches a second duration indicated by the second timer information, a sixth resource as the second resource, where the sixth resource is any of the following: the resource configured by the network side equipment, the resource configured by the network side equipment through the configuration information, and the resource autonomously selected by the UE.

Optionally, the processor 110 is specifically configured to send a third message to the network side device, where the third message is used to indicate that the UE fails to perform LBT on the first resource; and receiving a fourth message sent by the network side equipment, wherein the fourth message comprises second timer information.

Optionally, the processor 110 is further configured to stop performing LBT if the timer does not reach the target duration; and after the timer reaches a target time length, clearing the LBT counter, wherein the target time length is a first time length or a second time length.

Optionally, the target information includes resource type information, where the resource type information is used to indicate a first type of resource and a second type of resource. The processor 110 is specifically configured to determine the second type resource as the second resource, where a priority of the first type resource is higher than a priority of the second type resource.

Optionally, the radio frequency unit 101 is configured to send a fifth message to the network side device before determining the second type resource as the second resource, where the fifth message is used to indicate that the UE fails to perform LBT on the first type resource or the second type resource; and receiving resource type information sent by the network side equipment.

Optionally, when the target information includes the resource granularity reselection probability, the processor 110 is specifically configured to determine, when the resource granularity reselection probability satisfies a preset condition, a seventh resource as the second resource, where the seventh resource is a resource that does not trigger the continuous LBT failure; or, the processor 110 is specifically configured to determine the first resource as the second resource when the resource granularity reselection probability does not meet a preset condition.

Optionally, the radio frequency unit 101 is configured to receive a sixth message sent by the network side device, where the sixth message includes the sidelink unlicensed spectrum resource. The processor 110 is further configured to perform LBT detection on the sidelink unlicensed spectrum resource. The radio frequency unit 101 is further configured to send an LBT detection result to the network side device.

The UE provided in the embodiment of the present application can implement each process implemented by the foregoing method embodiment, and achieve the same technical effect, and is not described here again to avoid repetition.

The embodiment of the present application further provides a network side device, which includes a processor and a communication interface, where the communication interface is configured to send target information to a UE, and the target information is used for the UE to reselect a resource for performing LBT. Wherein the target information comprises at least one of: the method comprises the steps of configuring resources, timer information, resource type information and resource granularity reselection probability by network side equipment, wherein the timer information is used for indicating the duration of stopping executing LBT. The embodiment of the network side device corresponds to the embodiment of the method of the network side device, and all implementation processes and implementation manners of the embodiment of the method can be applied to the embodiment of the network side device and can achieve the same technical effect.

Specifically, the embodiment of the application further provides a network side device. As shown in fig. 8, the network-side device 800 includes: antenna 81, radio frequency device 82, baseband device 83. The antenna 81 is connected to a radio frequency device 82. In the uplink direction, the rf device 82 receives information via the antenna 81 and sends the received information to the baseband device 83 for processing. In the downlink direction, the baseband device 83 processes information to be transmitted and transmits the information to the rf device 82, and the rf device 82 processes the received information and transmits the processed information through the antenna 81.

Wherein the radio frequency device 82 is configured to send target information to the UE, and the target information is used for the UE to reselect resources for performing LBT. Wherein the target information comprises at least one of: the method comprises the steps of configuring resources, timer information, resource type information and resource granularity reselection probability by network side equipment, wherein the timer information is used for indicating the duration of stopping executing LBT.

The embodiment of the present application provides a network side device, which may send target information to a UE, so that the UE reselects a suitable resource (i.e., a second resource) according to the target information to perform an LBT operation on the resource, and for different target information, multiple ways of determining a reselected resource are provided, so that a communication requirement for data transmission between UEs is ensured, thereby improving a success rate of channel access.

The network side device provided by the embodiment of the present application can implement each process implemented by the method embodiment, and achieve the same technical effect, and for avoiding repetition, the details are not repeated here.

The above band processing means may be located in the baseband device 83, and the method performed by the network side device in the above embodiment may be implemented in the baseband device 83, where the baseband device 83 includes a processor 84 and a memory 85.

The baseband device 83 may include, for example, at least one baseband board, on which a plurality of chips are disposed, as shown in fig. 8, where one of the chips, for example, the processor 84, is connected to the memory 85 to call up the program in the memory 85 to perform the network side device operation shown in the above method embodiment.

The baseband device 83 may also include a network Interface 86, such as a Common Public Radio Interface (CPRI), for exchanging information with the rf device 82.

Specifically, the network side device according to the embodiment of the present invention further includes: the instructions or programs stored in the memory 85 and executable on the processor 84, and the processor 84 calls the instructions or programs in the memory 85 to execute the methods executed by the modules, and achieve the same technical effects, which are not described herein for avoiding repetition.

An embodiment of the present application further provides a readable storage medium, where a program or an instruction is stored in the readable storage medium, and when the program or the instruction is executed by a processor, the program or the instruction implements each process of the foregoing resource reselection method embodiment, and can achieve the same technical effect, and in order to avoid repetition, details are not repeated here.

Wherein the processor is the processor in the UE described in the above embodiment. The readable storage medium includes a computer readable storage medium, such as a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and so on. It should be noted that the readable storage medium may be nonvolatile, volatile, or non-transitory.

The embodiment of the present application further provides a chip, where the chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is configured to run a program or an instruction to implement each process of the foregoing resource reselection method embodiment, and can achieve the same technical effect, and for avoiding repetition, details are not repeated here.

It should be understood that the chips mentioned in the embodiments of the present application may also be referred to as a system-on-chip, a system-on-chip or a system-on-chip, etc.

An embodiment of the present application further provides a computer program/program product, where the computer program/program product is stored in a non-transitory readable storage medium, and the program/program product is executed by at least one processor to implement each process of the foregoing resource reselection method embodiment, and can achieve the same technical effect, and in order to avoid repetition, details are not repeated here.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising a component of' 8230; \8230;" does not exclude the presence of another like element in a process, method, article, or apparatus that comprises the element. Further, it should be noted that the scope of the methods and apparatuses in the embodiments of the present application is not limited to performing the functions in the order illustrated or discussed, but may include performing the functions in a substantially simultaneous manner or in a reverse order based on the functions recited, e.g., the described methods may be performed in an order different from that described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.

Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present application may be embodied in the form of a computer software product, which is stored in a storage medium (e.g., ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (e.g., a mobile phone, a computer, a server, an air conditioner, or a network-side device) to execute the method according to the embodiments of the present application.

While the present embodiments have been described with reference to the accompanying drawings, it is to be understood that the invention is not limited to the precise embodiments described above, which are meant to be illustrative and not restrictive, and that various changes may be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A method for resource reselection, comprising:

under the condition that User Equipment (UE) fails to perform Listen Before Talk (LBT) on a first resource, the UE determines a second resource according to target information;

the UE performing LBT on the second resource;

wherein the target information comprises at least one of: the method comprises the steps of configuring resources, timer information, resource type information and resource granularity reselection probability by network side equipment, wherein the timer information is used for indicating the duration of stopping executing LBT.

2. The method according to claim 1, wherein in a case that the target information includes resources configured by the network-side device, the UE determines a second resource according to the target information, including:

the UE determines a resource pre-configured by the network side equipment as the second resource;

or,

the UE receives a second message sent by the network side equipment, determines a third resource included in the configuration information as the second resource when the second message includes the configuration information, determines a fourth resource as the second resource when the second message does not include the configuration information and the second message indicates that the UE is allowed to perform LBT resource reselection, and the fourth resource is a resource which does not trigger continuous LBT failure.

3. The method of claim 2, wherein the UE receives a second message sent by the network-side device, and the second message comprises:

the UE sends a first message to the network side equipment, wherein the first message is used for requesting LBT resource reselection;

and the UE receives a second message sent by the network side equipment, wherein the second message comprises the configuration information.

4. The method of claim 3, wherein the first message comprises at least one of: the first resource, a frequency on which the UE performs an LBT failure on the first resource.

5. The method of claim 1, wherein in case that the target information includes the timer information, the UE determines a second resource according to the target information, comprising:

under the condition that first timer information is preconfigured in the UE, after a timer reaches a first duration indicated by the first timer information, the UE determines a fifth resource as the second resource, where the fifth resource is any one of: the resource pre-configured by the network side equipment and the resource autonomously selected by the UE;

under the condition that first timer information is not preconfigured in the UE, the UE receives second timer information sent by the network side equipment, and determines a sixth resource as the second resource after a timer reaches a second duration indicated by the second timer information, where the sixth resource is any one of the following: the resource configured by the network side equipment, the resource configured by the network side equipment through configuration information, and the resource autonomously selected by the UE.

6. The method according to claim 5, wherein the UE receives the second timer information sent by the network side device, and includes:

the UE sends a third message to the network side equipment, wherein the third message is used for indicating that the UE fails to perform LBT on the first resource;

and the UE receives a fourth message sent by the network side equipment, wherein the fourth message comprises the second timer information.

7. The method of claim 5 or 6, further comprising:

the UE stops executing LBT under the condition that the timer does not reach the target duration;

and the UE clears an LBT counter after the timer reaches the target time length, wherein the target time length is the first time length or the second time length.

8. The method of claim 1, wherein the target information comprises the resource type information, and wherein the resource type information is used to indicate a first type of resource and a second type of resource;

the UE determines a second resource according to the target information, and the method comprises the following steps:

the UE determines the second type of resource as the second resource, and the priority of the first type of resource is higher than that of the second type of resource.

9. The method of claim 8, wherein before the UE determines the second type of resource as the second resource, the method further comprises:

the UE sends a fifth message to the network side equipment, wherein the fifth message is used for indicating that the UE fails to perform LBT on the first type of resources or the second type of resources;

and the UE receives the resource type information sent by the network side equipment.

10. The method according to claim 8 or 9, wherein the first type of resource is a dedicated resource and the second type of resource is a shared resource;

or,

the first type of resource is an unlicensed spectrum resource, and the second type of resource is a licensed spectrum resource.

11. The method of claim 1, wherein in the case that the target information includes the resource granularity reselection probability, the UE determines a second resource according to the target information, and wherein the determining comprises:

determining, by the UE, a seventh resource as the second resource when the resource granularity reselection probability meets a preset condition, where the seventh resource is a resource that fails to trigger continuous LBT;

or,

and under the condition that the resource granularity reselection probability does not meet a preset condition, the UE determines the first resource as the second resource.

12. The method of claim 1, further comprising:

the UE receives a sixth message sent by the network side equipment, wherein the sixth message comprises sidelink unlicensed spectrum resources;

and the UE performs LBT detection on the side link unlicensed spectrum resources and sends an LBT detection result to the network side equipment.

13. A method for resource reselection, comprising:

network side equipment sends target information to User Equipment (UE), wherein the target information is used for the UE to reselect resources for executing Listen Before Talk (LBT);

14. The method according to claim 13, wherein in a case that the target information includes resources configured by the network side device, the network side device sends the target information to the UE, including:

the network side equipment sends a second message to the UE;

wherein, the second message includes configuration information, and the configuration information includes a third resource; or, the second message does not include configuration information, and the second message indicates that the UE is allowed to perform LBT resource reselection.

15. The method of claim 14, wherein the network side device sends a second message to the UE, and wherein the second message comprises:

the network side equipment receives a first message sent by the UE, wherein the first message is used for requesting LBT resource reselection;

and the network side equipment sends a second message to the UE, wherein the second message comprises the configuration information.

16. The method according to claim 13, wherein in case that the target information includes the timer information, the network side device sends the target information to the UE, and the method includes:

the network side device sends second timer information to the UE, where the second timer information is used for determining, by the UE, a sixth resource as a resource for performing LBT reselection by the UE after a timer reaches a second duration indicated by the second timer information, where the sixth resource is any one of: the resource configured by the network side equipment, the resource configured by the network side equipment through configuration information, and the resource autonomously selected by the UE.

17. The method of claim 16, wherein the network side device sends second timer information to the UE, and wherein the second timer information comprises:

the network side equipment receives a third message sent by the UE, wherein the third message is used for indicating that the UE fails to perform LBT on the first resource;

and the network side equipment sends a fourth message to the UE, wherein the fourth message comprises the second timer information.

18. The method of claim 13, wherein the target information comprises the resource type information, and wherein the resource type information is used to indicate a first type of resource and a second type of resource, and wherein the first type of resource has a higher priority than the second type of resource;

the network side equipment sends target information to the UE, and the target information comprises the following steps:

the network side equipment receives a fifth message sent by the UE, wherein the fifth message is used for indicating that the UE fails to perform LBT on the first type of resources or the second type of resources;

and the network side equipment sends the resource type information to the UE.

19. The method of claim 13, further comprising:

the network side equipment sends a sixth message to the UE, wherein the sixth message comprises sidelink unlicensed spectrum resources;

the network side equipment receives an LBT detection result sent by the UE, wherein the LBT detection result is a result after the UE performs LBT detection on the side link unlicensed spectrum resources.

20. A resource reselection apparatus, comprising: a determining module and an executing module;

the determining module is configured to determine a second resource according to target information when the user equipment UE fails to perform listen before talk LBT on the first resource;

the performing module is configured to perform LBT on the second resource;

21. The apparatus according to claim 20, wherein in the case that the target information includes the resources configured by the network-side device,

the determining module is specifically configured to determine a resource preconfigured by the network side device as the second resource;

or,

the determining module is specifically configured to receive a second message sent by the network-side device, determine, when the second message includes configuration information, a third resource included in the configuration information as the second resource, and determine, when the second message does not include the configuration information and the second message indicates that the UE is allowed to perform LBT resource reselection, a fourth resource as the second resource, where the fourth resource is a resource that does not trigger consecutive LBT failure.

22. The apparatus of claim 21, wherein the determining module is specifically configured to send a first message to the network-side device, where the first message is used to request LBT resource reselection; and receiving a second message sent by the network side equipment, wherein the second message comprises the configuration information.

23. The apparatus of claim 20, wherein in the case that the target information includes the timer information,

the determining module is specifically configured to, when first timer information is preconfigured in the UE, determine a fifth resource as the second resource after a timer reaches a first duration indicated by the first timer information, where the fifth resource is any one of: the resource pre-configured by the network side equipment and the resource autonomously selected by the UE;

or,

the determining module is specifically configured to receive, when first timer information is not preconfigured in the UE, second timer information sent by the network side device, and determine, after a timer reaches a second duration indicated by the second timer information, a sixth resource as the second resource, where the sixth resource is any one of the following: the resource configured by the network side equipment, the resource configured by the network side equipment through configuration information, and the resource autonomously selected by the UE.

24. The apparatus of claim 23, wherein the determining module is specifically configured to send a third message to the network-side device, and wherein the third message is used to instruct the UE to perform LBT failure on the first resource; and receiving a fourth message sent by the network side device, wherein the fourth message comprises the second timer information.

25. The apparatus of claim 23 or 24, further comprising: a zero clearing module;

the execution module is further configured to stop executing the LBT when the timer does not reach the target duration;

the clearing module is configured to clear an LBT counter after the timer reaches the target duration, where the target duration is the first duration or the second duration.

26. The apparatus of claim 20, wherein the target information comprises the resource type information, and wherein the resource type information is used to indicate a first type of resource and a second type of resource;

the determining module is specifically configured to determine the second type of resource as the second resource, where a priority of the first type of resource is higher than a priority of the second type of resource.

27. The apparatus of claim 26, further comprising: a transmitting module and a receiving module;

the sending module is configured to send a fifth message to the network side device before determining the second type of resource as the second resource, where the fifth message is used to indicate that the UE failed to perform LBT on the first type of resource or the second type of resource;

the receiving module is configured to receive the resource type information sent by the network side device.

28. The apparatus of claim 20, wherein in the case that the target information comprises the resource granularity reselection probability,

the determining module is specifically configured to determine a seventh resource as the second resource when the resource granularity reselection probability meets a preset condition, where the seventh resource is a resource that fails to trigger continuous LBT;

or,

the determining module is specifically configured to determine the first resource as the second resource when the resource granularity reselection probability does not meet a preset condition.

29. The apparatus of claim 20, further comprising: the device comprises a receiving module and a sending module;

the receiving module is configured to receive a sixth message sent by the network side device, where the sixth message includes a sidelink unlicensed spectrum resource;

the performing module is further configured to perform LBT detection on the sidelink unlicensed spectrum resource;

the sending module is configured to send an LBT detection result to the network side device.

30. A resource reselection apparatus, comprising: a sending module;

the sending module is configured to send target information to a user equipment UE, where the target information is used for the UE to reselect a resource for performing listen before talk LBT;

31. The apparatus according to claim 30, wherein the sending module is specifically configured to send a second message to the UE, when the target information includes resources configured by the network-side device; wherein, the second message includes configuration information, and the configuration information includes a third resource; or, the second message does not include configuration information, and the second message indicates that the UE is allowed to perform LBT resource reselection.

32. The apparatus of claim 31, wherein the transmitting module is specifically configured to receive a first message sent by the UE, and wherein the first message is used to request LBT resource reselection; and sending a second message to the UE, wherein the second message comprises the configuration information.

33. The apparatus of claim 30, wherein, in a case that the target information includes the timer information, the sending module is specifically configured to send second timer information to the UE, where the second timer information is used by the UE to determine a sixth resource as a resource for performing LBT reselection by the UE after a timer reaches a second duration indicated by the second timer information, where the sixth resource is any one of: the resource configured by the network side equipment, the resource configured by the network side equipment through configuration information, and the resource autonomously selected by the UE.

34. The apparatus of claim 33, wherein the means for sending is specifically configured to receive a third message sent by the UE, and wherein the third message is used to indicate that the UE failed to perform LBT on the first resource; and sending a fourth message to the UE, where the fourth message includes the second timer information.

35. The apparatus as claimed in claim 34, wherein the target information comprises the resource type information, the resource type information is used to indicate a first type of resource and a second type of resource, the first type of resource has a higher priority than the second type of resource;

the sending module is specifically configured to receive a fifth message sent by the UE, where the fifth message is used to indicate that the UE fails to perform LBT on the first type of resource or the second type of resource; and transmitting the resource type information to the UE.

36. The apparatus of claim 30, further comprising: a receiving module;

the sending module is configured to send a sixth message to the UE, where the sixth message includes sidelink unlicensed spectrum resources;

the receiving module is further configured to receive an LBT detection result sent by the UE, where the LBT detection result is a result of performing LBT detection on the sidelink unlicensed spectrum resource by the UE.

37. A user equipment, UE, comprising a processor, a memory and a program or instructions stored on the memory and executable on the processor, which program or instructions, when executed by the processor, implement the steps of the resource reselection method according to any of claims 1 to 12.

38. A network-side device comprising a processor, a memory, and a program or instructions stored on the memory and executable on the processor, wherein the program or instructions, when executed by the processor, implement the steps of the resource reselection method according to any of claims 13 to 19.

39. A readable storage medium, characterized in that it stores thereon a program or instructions which, when executed by a processor, carry out the steps of the resource reselection method as claimed in any one of claims 1 to 12, or carry out the steps of the resource reselection method as claimed in any one of claims 13 to 19.

40. A communication system, characterized in that the communication system comprises the resource reselection apparatus of any of claims 20 to 29 and the resource reselection apparatus of any of claims 30 to 36; or,

the communication system comprises the user equipment UE according to claim 37 and the network side equipment according to claim 38.