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

Abstract

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

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of communication, and particularly relates to a resource reselection method and device, a communication device, a storage medium and a system. BACKGROUND

[0002] Generally, in the process of communication between a user equipment (UE) and a network side device, the network side device can preempt a non-licensed spectrum resource for the UE, and the UE can perform data transmission with the network side device according to different channel access modes within a channel occupancy time (COT) through the non-licensed spectrum resource, so as to realize the communication between the UE and the network side device.

[0003] However, the non-licensed spectrum resource preempted by the network side device can be used only for the communication between the network side device and the UE, and in other communication cases, the success rate of UE channel access is low. SUMMARY

[0004] Embodiments of the present application provide a resource reselection method and device, a communication device, a storage medium and a system, which can solve the problem of low success rate of UE channel access.

[0005] In a first aspect, a resource reselection method is provided, which includes: in the case that a UE fails to perform LBT on a first resource, the UE determines a second resource according to target information; and the UE performs LBT on the second resource. The target information includes at least one of the following: a resource configured by a network side device, timer information, resource type information, and resource granularity reselection probability, the timer information being used to indicate a time length for stopping performing LBT.

[0006] In a second aspect, a resource reselection method is provided, which includes: a network side device sends target information to a UE, the target information being used for the UE to reselect a resource for performing LBT. The target information includes at least one of the following: a resource configured by the network side device, timer information, resource type information, and resource granularity reselection probability, the timer information being used to indicate a time length for stopping performing LBT.

[0007] In a third aspect, a resource reselection device is provided, which includes a determination module and an execution module. The determination module is configured to determine a second resource according to target information in the case that a UE fails to perform LBT on a first resource. The execution module is configured to perform LBT on the second resource. The target information includes at least one of the following: a resource configured by a network side device, timer information, resource type information, and resource granularity reselection probability, the timer information being used to indicate a time length for stopping performing LBT.

[0008] In a fourth aspect, a resource reselection apparatus is provided, which comprises a sending module. The sending module is configured to send target information to a UE, the target information being used for the UE to reselect a resource on which LBT is performed, and the target information comprising at least one of the following: a resource configured by a network-side device, timer information, resource type information, and resource granularity reselection probability, the timer information being used to indicate a time length during which LBT is stopped.

[0009] In a fifth aspect, a UE is provided, which comprises a processor, a memory, and a program or instruction stored in the memory and executable on the processor, and when the program or instruction is executed by the processor, the steps of the method according to the first aspect are implemented.

[0010] In a sixth aspect, a network-side device is provided, which comprises a processor, a memory, and a program or instruction stored in the memory and executable on the processor, and when the program or instruction is executed by the processor, the steps of the method according to the second aspect are implemented.

[0011] In a seventh aspect, a UE is provided, which comprises a processor and a communication interface, wherein the processor is configured to, in a case where the UE fails to perform LBT on a first resource, determine a second resource according to target information, and perform LBT on the second resource, and the target information comprises at least one of the following: a resource configured by a network-side device, timer information, resource type information, and resource granularity reselection probability, the timer information being used to indicate a time length during which LBT is stopped.

[0012] In an eighth aspect, a network-side device is provided, which comprises a processor and a communication interface, wherein the communication interface is configured to send target information to a UE, the target information being used for the UE to reselect a resource on which LBT is performed, and the target information comprising at least one of the following: a resource configured by a network-side device, timer information, resource type information, and resource granularity reselection probability, the timer information being used to indicate a time length during which LBT is stopped.

[0013] In a ninth aspect, a readable storage medium is provided, which stores a program or instruction, and when the program or instruction is executed by a processor, the steps of the method according to the first aspect are implemented, or the steps of the method according to the second aspect are implemented.

[0014] In a tenth aspect, a communication system is provided, which comprises the resource reselection apparatus according to the third aspect and the resource reselection apparatus according to the fourth aspect; or the communication system comprises the UE according to the fifth aspect and the network-side device according to the sixth aspect; or the communication system comprises the UE according to the seventh aspect and the network-side device according to the eighth aspect.

[0015] In a eleventh aspect, a chip is provided, the chip comprising a processor and a communication interface, the communication interface and the processor coupled, the processor configured to execute a program or instructions to implement the method of the first aspect, or to implement the method of the second aspect.

[0016] In a twelfth aspect, a computer program / program product is provided, the computer program / program product stored in a non-transitory readable storage medium, the program / program product executed by at least one processor to implement the steps of the resource reselection method of the first aspect, or to implement the steps of the resource reselection method of the second aspect.

[0017] In the embodiments of the present application, in the case that the UE fails to perform LBT on the first resource, the UE can determine a second resource on which to perform LBT according to target information, which can include at least one of the following: resource configured by a network side device, timer information indicating a time length for which LBT is to be stopped, resource type information, and resource granularity reselection probability. In the present scheme, in the case that the UE fails to perform LBT when attempting to acquire a transmission resource on an unlicensed spectrum resource, the UE can reselect a suitable resource (i.e., a second resource) according to the target information to perform LBT on the resource, and for different target information, multiple ways of determining the reselected resource are given, ensuring the communication needs of data transmission between UEs, thereby improving the success rate of UE channel access. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a schematic diagram of an architecture of a communication system provided by an embodiment of the present application;

[0019] Figure 2 is one of flowcharts of a resource reselection method provided by an embodiment of the present application;

[0020] Figure 3 is another of flowcharts of a resource reselection method provided by an embodiment of the present application;

[0021] Figure 4 is one of structural schematic diagrams of a resource reselection apparatus provided by an embodiment of the present application;

[0022] Figure 5 is another of structural schematic diagrams of a resource reselection apparatus provided by an embodiment of the present application;

[0023] Figure 6 is a hardware structural schematic diagram of a communication device provided by an embodiment of the present application;

[0024] Figure 7 is a hardware structural schematic diagram of a UE provided by an embodiment of the present application;

[0025] Figure 8 is a hardware structure schematic diagram of a network side device provided by an embodiment of the present application. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present application.

[0027] The terms "first", "second", and the like in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second" are generally of a kind, and are not limited to the number of objects, for example, the first object can be one or more. In addition, "and / or" in the specification and claims indicates at least one of the connected objects, and the character " / " generally indicates that the front and rear associated objects are in an "or" relationship.

[0028] It is worth noting that the technology described in the embodiments of the present application is not limited to Long Term Evolution (LTE) / LTE-Advanced (LTE-A) systems, but can 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 the embodiments of the present application, and the described technology can be used in the above-mentioned systems and radio technologies, as well as in other systems and radio technologies. The following description describes a New Radio (NR) system for the purpose of example, and NR terminology is used in most of the following description, but these technologies can also be applied outside the NR system application, such as in a 6th Generation (6G) communication system.

[0029] Figure 1A block diagram of a wireless communication system to which embodiments of the present application can be applied is shown. The wireless communication system includes a terminal 11 and a network side device 12. The terminal 11 can also be referred to as a terminal device or a user terminal (User Equipment, UE). The terminal 11 can be a terminal side device such as a mobile phone, a tablet personal computer, a laptop computer, a personal digital assistant (PDA), a palm computer, a netbook, an ultra-mobile personal computer (UMPC), a mobile Internet device (MID), a wearable device, or a vehicle-mounted device (VUE), a pedestrian terminal (PUE), etc. The wearable device includes a smart watch, a bracelet, a headset, glasses, etc. It should be noted that the specific type of the terminal 11 is not limited in the embodiments of the present application. The network side device 12 can be a base station or a core network. The base station can 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 home evolved node B, a WLAN access point, a WiFi node, a transmitting receiving point (TRP), or some other appropriate terminology in the art, as long as the same technical effects are achieved. The base station is not limited to a specific technical term, and it should be noted that only a base station in an NR system is taken as an example in the embodiments of the present application, but the specific type of the base station is not limited.

[0030] Some concepts and / or terms involved in the resource reselection method, apparatus, communication device, storage medium and system provided by the embodiments of the present application are explained as follows.

[0031] 1. New radio in unlicensed spectrum (NR-U)

[0032] In a communication protocol, Radio Resource Control (RRC) configures a consistent Listen Before Talk (LBT) failure recovery procedure for a Media Access Control (MAC) entity. If LBT detection is performed before transmission and the channel is detected as busy, a low layer sends an LBT failure indication to the MAC entity.

[0033] The consistent LBT failure is per UL BWP based, and is generated by consistent LBT failure counting for all uplink (UL) transmissions from the low layer to the MAC entity. The parameter used by the UE for LBT failure counting is LBT_COUNTER (per serving cell based). RRC configures two parameters, i.e., lbt-FailureInstanceMaxCount and lbt-FailureDetectionTimer, for consistent LBT failure detection in lbt-FailureRecoveryConfig. LBT_COUNTER is incremented by one each time the MAC entity receives an LBT failure indication from the low layer. When LBT_COUNTER >= lbt-FailureInstanceMaxCount, consistent LBT failure is triggered for an active UL BWP of a serving cell, and then, the active UL BWP is switched to another UL BWP configured with a Physical Random Access Channel (PRACH) occasion on the same carrier of the serving cell, and the LBT is performed in the UL BWP which has not triggered consistent LBT failure. If all UL BWPs of the serving cell have triggered consistent LBT failure, consistent LBT failure is indicated to the high layer.

[0034] In a communication protocol, an eNB / gNB can initiate channel occupancy sharing according to nodeB self-Downlink (DL) channel access or UE according to UL channel access. An eNB / gNB / UE can determine a maximum COT through a channel access priority class (CAPC) (as shown in Table 1). For channel access priorities p = 3 and p = 4, if it can be ensured that no other Radio Access Technology (RAT) shares this channel in the long term (as limited by the relevant protocol), Tm cot, p = 10 ms; otherwise, Tm cot, p = 8 ms.

[0035] Table 1 Channel access priority

[0036]

[0037] The resource reselection method provided by the embodiments of the present application will be described in detail below in combination with the accompanying drawings, some embodiments and application scenarios.

[0038] Generally, in the process of communication between a UE and a network side device, the network side device can preempt unlicensed spectrum resources for the UE, and the UE can perform data transmission with the network side device according to different channel access modes in a channel occupancy time through the unlicensed spectrum resources, thereby realizing communication between the UE and the network side device.

[0039] However, the unlicensed spectrum resources preempted by the network side device can only be used for communication between the network side device and the UE, and the UEs cannot communicate by using the unlicensed spectrum resources preempted by the network side device, resulting in a situation that the UE continuously fails to acquire transmission resources when attempting to acquire transmission resources on the unlicensed spectrum, thereby resulting in a low success rate of UE channel access.

[0040] To solve the above technical problems, in the embodiments of the present application, in the case that the UE fails to perform LBT on the first resource, the UE can determine a second resource according to target information to perform LBT on the second resource. The target information includes at least one of the following: resource configured by the network side device, timer information indicating a time length of stopping performing LBT, resource type information, and resource granularity reselection probability. Through the present scheme, in the case that the UE fails to perform LBT when attempting to acquire transmission resources on the unlicensed spectrum resources, the UE can reselect a suitable resource (i.e., the second resource) according to the target information to perform LBT operation on the resource, and for different target information, multiple ways of determining the reselected resource are given, thereby ensuring the communication demand of data transmission between UEs, and improving the success rate of UE channel access.

[0041] It should be noted that, on the unlicensed spectrum, the UE can perform resource selection based on different resource selection granularity, for example, carrier-based resource selection, or bandwidth part (BWP) based resource selection, or resource pool based resource selection. The UE can support SL transmission on one or more carriers on the unlicensed spectrum according to its terminal capability. Further, one carrier can contain one or more bandwidth parts, and one bandwidth part can contain one or more resource pools.

[0042] The embodiment of the present application provides a resource reselection method, Figure 2 A flow chart of a resource reselection method provided by the embodiment of the present application is shown. As shown in the figure, Figure 2 The resource reselection method provided by the embodiment of the present application can include the following steps 21 to 23.

[0043] Step 21, in the case that the UE fails to perform LBT on the first resource, the UE acquires target information.

[0044] The target information includes at least one of the following: resource configured by the network side device, timer information, resource type information, and resource granularity reselection probability, wherein the timer information is used to indicate the duration of stopping performing LBT.

[0045] Step 22, the UE determines a second resource according to the target information.

[0046] Step 23, the UE performs LBT on the second resource.

[0047] Optionally, in the embodiment of the present application, the target information can be determined by any of the following: protocol agreement, network side device pre-configuration, network side device configuration, other user equipment indication, and UE autonomous decision.

[0048] Optionally, in the embodiment of the present application, in combination with Figure 2 As shown in the figure, Figure 3 The step 21 can be implemented by the following steps 21a and 21b.

[0049] Step 21a, the network side device sends the target information to the UE.

[0050] Step 21b, the UE receives the target information sent by the network side device.

[0051] The method of the UE determining a second resource according to target information (step 22) in the resource reselection method provided by the embodiment of the present application is described below through four implementation modes.

[0052] In the first implementation, in the case where the target information includes the resource configured by the network-side device, the method for determining the second resource by the UE according to the target information can include the following step 201 (or steps 202 and 203, or steps 202 and 204).

[0053] Step 201: The UE determines the resource pre-configured by the network-side device as the second resource.

[0054] Step 202: The network-side device sends a second message to the UE.

[0055] Step 203: The UE receives the second message sent by the network-side device, and in the case where the second message includes configuration information, determines the third resource included in the configuration information as the second resource.

[0056] Step 204: The UE receives the second message sent by the network-side device, and in the case where the second message does not include the configuration information and the second message indicates that the UE is allowed to perform LBT resource reselection, determines the fourth resource as the second resource.

[0057] In the embodiments of the present application, the fourth resource is a resource that does not trigger persistent LBT failure.

[0058] It should be noted that the resource that does not trigger persistent LBT failure can be understood as a resource with a low frequency of triggering LBT failure, or a resource that has not triggered LBT failure.

[0059] In the embodiments of the present application, in one implementation, the UE can determine the resource pre-configured by the network-side device as the second resource; in another implementation, the UE can determine the resource currently configured by the network-side device (i.e., the third resource) as the second resource; and in yet another implementation, the UE can determine the resource that does not trigger persistent LBT failure as the second resource according to the message indicating that the UE is allowed to perform LBT resource reselection.

[0060] In the embodiments of the present application, the UE can determine the resource pre-configured by the network-side device or the resource autonomously selected as the second resource to perform LBT operation on the resource, which guarantees the communication requirement of data transmission between UEs, thereby improving the success rate of UE channel access.

[0061] Optionally, in the embodiments of the present application, the steps 202 and 203 can be implemented through the following steps 202a to 202d.

[0062] Step 202a: The UE sends a first message to the network-side device.

[0063] Step 202b, the network side device receives the first message sent by the UE.

[0064] In the embodiments of the present application, the first message is used to request LBT resource reselection.

[0065] Optionally, in the embodiments of the present application, the first message includes at least one of the following: the first resource, and the frequency of LBT failure of the UE on the first resource.

[0066] Optionally, in the embodiments of the present application, the first message includes the first resource; or the first message includes the frequency of LBT failure of the UE on the first resource; or the first message includes both the first resource and the frequency of LBT failure of the UE on the first resource.

[0067] It should be noted that the frequency of LBT failure of the UE on the first resource can be understood as the proportion of the number of times of LBT failure of the UE on the first resource to the total number of times of LBT of the UE. For example, if the UE performs 10 times of LBT on the first resource, and there are 8 times of LBT failure, the frequency of LBT failure of the UE on the first resource is 0.8.

[0068] It can be understood that the higher the frequency of LBT failure of the UE on the first resource, the more unavailable the first resource is, and a suitable resource needs to be reselected.

[0069] Step 202c, the network side device sends a second message to the UE.

[0070] In the embodiments of the present application, the second message includes configuration information.

[0071] 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.

[0072] In the embodiments of the present application, the network side device can perform resource reconfiguration on the UE, and the third resource is carried in the message indicating the reconfiguration, so that the UE performs LBT operation on the third resource, which guarantees the communication demand of data transmission between UEs, thereby improving the success rate of UE channel access.

[0073] In this embodiment, when the UE fails to perform LBT on different resource levels, the UE can perform autonomous selection or network side device coordinated resource reconfiguration based on different resource granularity. The first embodiment is specifically described below by taking the network side device coordinated resource reconfiguration of the UE on the BWP resource level as an example.

[0074] Case 1, the network side device configures an active sidelink bandwidth part (SL BWP) for the UE, in the case that the UE triggers consistent LBT failure on a resource pool (i.e., the first resource) of the active SL BWP, the UE autonomously reselects to a resource pool (i.e., the second resource) that does not trigger consistent LBT failure to perform LBT operation on the resource pool.

[0075] Case 2, the network side device configures an active SL BWP for the UE, in the case that the UE triggers consistent LBT failure on all resource pools of the active SL BWP (i.e., the first resource):

[0076] 1) if the network side device pre-configures a target SL BWP (i.e., the second resource) for SL BWP reselection for the UE, the UE reselects to the target SL BWP to perform LBT operation on the target SL BWP.

[0077] 2) if the network side device does not pre-configure any SL BWP for the UE, the UE reports relevant information of consistent LBT failure to the network side device to request LBT resource reselection, the information includes the BWP resource (i.e., the first resource) that triggers consistent LBT failure and / or the frequency / frequency of consistent LBT failure triggered by the UE on the BWP resource;

[0078] A) if the network side device reconfigures the SL BWP resource for 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;

[0079] B) if the network side device reconfigures the SL BWP resource for 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 consistent LBT failure to perform LBT operation on the SL BWP.

[0080] Case 3, the network side device configures a carrier for the UE, in the case that the UE triggers consistent LBT failure on all SL BWPs of the carrier (i.e., the first resource):

[0081] 1) if there are enough uplink shared channel (UL-SCH) resources for the UE to report LBT failure MAC control element (CE) and subheader, the UE generates LBTfailure MAC CE and reports to the network side device;

[0082] 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.

[0083] In the second implementation, in the case where the target information includes timer information, the method in which the UE determines the second resource according to the target information can include the following step 301 or step 302.

[0084] Step 301, in the case where the first timer information is pre-configured in the UE, the UE determines the fifth resource as the second resource after a timer reaches a first time length indicated by the first timer information.

[0085] In the embodiments of the present application, the fifth resource is any one of the following: a resource pre-configured by the network side device, a resource autonomously selected by the UE.

[0086] Optionally, in the embodiments of the present application, the first timer information can be timer information pre-configured by the network side device for the UE.

[0087] Optionally, in the embodiments of the present application, if the network side device pre-configures the first timer information for the UE, the UE can determine a resource pre-configured by the network side device as the second resource after a timer reaches a first time length indicated by the first timer information; or the UE can autonomously reselect a resource and determine the autonomously reselected resource as the second resource.

[0088] Step 302, in the case where the first timer information is not pre-configured 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 a timer reaches a second time length indicated by the second timer information.

[0089] In the embodiments of the present application, the sixth resource is any one of the following: a resource pre-configured by the network side device, a resource configured by the network side device through configuration information, and a resource autonomously selected by the UE.

[0090] Optionally, in the embodiments of the present application, the first time length and the second time length can be the same or different.

[0091] Optionally, in the embodiments of the present application, the method in which the network side device configures a resource for the UE through configuration information can include: the network side device sends a message including the configuration information to the UE, the UE receives the message sent by the network side device, and the resource included in the configuration information is determined as the sixth resource.

[0092] Optionally, in the embodiments of the present application, the UE can receive the second timer information sent by the network side device, so that the UE determines the second resource as the resource pre-configured by the network side device after the timer reaches the second time length indicated by the second timer information; or, the UE determines the second resource as the resource currently configured by the network side device; or, the UE can autonomously reselect the resource and determine the autonomously reselected resource as the second resource.

[0093] In the embodiments of the present application, the UE can select a suitable resource based on the pre-configured timer information or the currently configured timer information, so as to perform the LBT operation on the resource, thereby guaranteeing the communication requirement of data transmission between UEs and improving the success rate of UE channel access.

[0094] Optionally, in the embodiments of the present application, the step 302 can be implemented through the following steps 302a to 302d.

[0095] The step 302a comprises that the UE sends a third message to the network side device.

[0096] The step 302b comprises that the network side device receives the third message sent by the UE.

[0097] In the embodiments of the present application, the third message is used to indicate that the UE fails to perform the LBT on the first resource.

[0098] Optionally, in the embodiments of the present application, the third message can include the reason why the UE fails to perform the LBT on the first resource, for example, channel busy, overheating scenario, low power and the like.

[0099] The step 302c comprises that the network side device sends a fourth message to the UE.

[0100] The step 302b comprises that the UE receives the fourth message sent by the network side device.

[0101] In the embodiments of the present application, the fourth message includes the second timer information.

[0102] In the embodiments of the present application, the UE can receive the second timer information configured by the network side device, so as to determine the reselected second resource after the time length indicated by the second timer information, thereby guaranteeing the communication requirement of data transmission between UEs and improving the success rate of UE channel access.

[0103] Optionally, in the embodiments of the present application, the resource reselection method provided by the present application further includes the following steps 303 and 304.

[0104] The step 303 comprises that the UE stops performing the LBT in the case that the timer does not reach the target time length.

[0105] In step 304, the UE clears the LBT counter after the timer reaches the target duration.

[0106] In the embodiments of the present application, the target duration is the first duration or the second duration.

[0107] Optionally, in the embodiments of the present application, the LBT counter is used to record the number of times of LBT performed by the UE.

[0108] In the embodiments of the present application, since there may be multiple other UEs pre-empting the resources within the target duration, the UE does not perform LBT within the target duration, and clears the LBT counter after the target duration to re-perform the LBT operation, thereby ensuring the communication requirement of data transmission between UEs and improving the success rate of UE channel access.

[0109] In this implementation, when the UE triggers persistent LBT failure in the out of coverage (OOC), low battery or overheating scenarios, the UE can not perform LBT within the duration indicated by a (pre)configured timer, and re-performs the LBT operation after the timer expires. The following takes the UE at the SL carrier resource level as an example to specifically describe the second implementation.

[0110] In the case where all SL BWPs of the UE under the SL carrier trigger persistent LBT failure:

[0111] 1) If the network side device pre-configures a timer (i.e., first timer information) for the UE, the UE stops LBT within the duration T0 indicated by the timer, and clears the LBT counter after the timer expires. Then, the UE reselects to the default SL BWP pre-configured by the network side device, or the UE autonomously reselects to any SL BWP to perform the LBT operation on the default SL BWP or any resource pool on the SL BWP.

[0112] 2) If the network side device does not pre-configure the timer for the UE, the UE reports the sidelink carrier persistence LBT failure to the network side device, and can also report the reason for the persistent LBT failure (such as Channel Busy / Overheating / Low Power, etc.), the UE can receive one timer (i.e., second counter information) configured by the network side device, stop LBT within the time T1 indicated by the timer, and after the timer expires, clear the LBT counter, and then the UE reselects to the default SL BWP pre-configured by the network side device, or reselects to the SL BWP configured by the network side device according to the configuration information, or autonomously reselects to any one SL BWP to perform LBT operation on any one resource pool on the SL BWP.

[0113] In a third implementation, the target information includes resource type information, the resource type information is used to indicate a first type resource and a second type resource, and the method in which the UE determines the second resource according to the target information can include the following step 401.

[0114] Step 401: The UE determines the second type resource as the second resource.

[0115] In the embodiments of the present application, the priority of the first type resource is higher than the priority of the second type resource.

[0116] Optionally, in the embodiments of the present application, 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.

[0117] It should be noted that, since the dedicated resource and the unlicensed spectrum resource are relatively difficult to obtain, the UE usually preferentially uses the dedicated resource or the unlicensed spectrum resource.

[0118] In the embodiments of the present application, the first resource can be the first type resource, that is, in the case that the UE performs LBT failure on the resource with high priority, the UE can reselect to the resource with low priority to perform LBT operation on the resource with low priority, thereby ensuring the communication requirement of data transmission between UEs, and improving the success rate of UE channel access.

[0119] Optionally, before the step 401, the resource reselection method provided by the embodiments of the present application further includes the following steps 402 to 405.

[0120] Step 402: The UE sends a fifth message to the network side device.

[0121] Step 403, the network side device receives the fifth message sent by the UE.

[0122] In the embodiments of the present application, 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.

[0123] Step 404, the network side device sends resource type information to the UE.

[0124] Step 405, the UE receives the resource type information sent by the network side device.

[0125] In the embodiments of the present application, since the network side device configures the UE with the first type of resource and the second type of resource, when the UE fails to perform LBT on the first type of resource or the second type of resource, the UE can reselect to the second type of resource (i.e. the resource with low priority) to perform LBT operation on the second type of resource, which guarantees the communication requirement of data transmission between UEs, thereby improving the success rate of UE channel access.

[0126] In this implementation, for a region, if it is ensured in the long term that no other wireless access technology shares this channel (such as relevant protocol restrictions), the network side device can 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 by the UE within the coverage of the network side device can also be a licensed spectrum type or an unlicensed spectrum type. The following takes the UE at the resource pool level as an example to specifically describe the third implementation.

[0127] 1) The network side device configures the UE with a dedicated resource pool and a shared resource pool, and the UE preferentially uses the dedicated resource pool:

[0128] 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.

[0129] B) If the UE triggers persistent LBT failure on the shared resource pool configured by the network side device, the UE reports to the network side device that LBT failure is performed on the shared resource pool.

[0130] 2) The network-side device configures the UE with an unlicensed spectrum resource pool and a licensed spectrum resource pool, and the UE preferentially uses the unlicensed spectrum resource pool:

[0131] 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 the licensed spectrum resource pool.

[0132] B) If the UE triggers persistent LBT failure on the licensed spectrum resource pool configured by the network-side device, the UE reports to the network-side device that LBT failure is performed on the licensed spectrum resource pool.

[0133] In a fourth implementation, in a case where the target information includes the resource granularity reselection probability, the method for determining the second resource by the UE according to the target information can include the following step 501 or step 502.

[0134] Step 501: In a case where the resource granularity reselection probability meets a preset condition, the UE determines the seventh resource as the second resource.

[0135] In the embodiments of the present application, the seventh resource is a resource that does not trigger persistent LBT failure.

[0136] Optionally, in the embodiments of the present application, the resource granularity reselection probability can be a resource granularity reselection probability corresponding to the first resource.

[0137] Optionally, in the embodiments of the present application, the resource granularity reselection probability meeting the preset condition means that a random number related to the resource granularity reselection probability falls within the range of the resource reselection probability. For example, assuming that the resource granularity reselection probability is 30%, if the random number falls within 【0, 30】, the UE needs to reselect the resource.

[0138] It should be noted that the resource that does not trigger persistent LBT failure can be understood as a resource with a low frequency of triggering LBT failure, or a resource that has not triggered LBT failure.

[0139] Step 502: In a case where the resource granularity reselection probability does not meet the preset condition, the UE determines the first resource as the second resource.

[0140] For example, assuming that the resource granularity reselection probability 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.

[0141] In the embodiments of the present application, the UE can determine whether to reselect resources according to the resource granularity reselection probability, to perform the LBT operation on the first resource or the reselected resource, so as to ensure the communication requirement of data transmission between UEs, thereby improving the success rate of UE channel access.

[0142] In this embodiment, the network side device can configure the SL carrier on which the UE can perform transmission and the multiple SL BWPs on the SL carrier according to the capability of the UE, and multiple SL resource pools can be configured on each SL BWP. The network side device can select whether to (pre)configure the BWP reselection probability and / or the resource pool reselection probability for the UE. According to different resource granularity, the UE can perform 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 can determine whether to perform BWP reselection / resource pool reselection according to the BWP reselection probability / resource pool reselection probability when triggering persistent LBT failure. If the network side device does not configure the BWP reselection probability / resource pool reselection probability, the UE can autonomously reselect the BWP until all SL BWPs on the SL carrier trigger persistent LBT failure, and then the UE reports the persistent LBT failure to the network side device. The fourth embodiment is specifically described below taking the UE at the resource pool resource level as an example.

[0143] Case one, the network side device configures one active SL BWP for the UE, and the UE triggers consistent LBT failure on a resource pool of the active SL BWP:

[0144] 1) If the network side device configures the resource pool reselection probability based on each resource pool (i.e., each resource pool corresponds to a resource pool reselection probability) or the resource pool reselection probability based on all resource pools (i.e., all resource pools correspond to a resource pool reselection probability) for the UE;

[0145] A) UE decides to reselect resource pool according to this probability, UE can reselect to other resource pool which does not trigger consistent LBT failure in the active SL BWP to perform LBT operation in this resource pool;

[0146] B) UE does not perform resource pool reselection according to this probability, still perform LBT operation in current resource pool.

[0147] 2) If network side device does not configure resource pool reselection probability for UE, UE autonomously reselects to other resource pool which does not trigger consistent LBT failure in the active SL BWP to perform LBT operation in this resource pool.

[0148] Case two, network side device configures one active SL BWP for UE, in the case that UE triggers consistent LBT failure in all resource pools of the active SL BWP:

[0149] 1) If network side device configures BWP reselection probability based on each bandwidth part (for per BWP) or BWP reselection probability based on all bandwidth parts (for all BWP) for UE;

[0150] A) UE decides to reselect SL BWP according to this probability, UE can reselect to other SL BWP which does not trigger consistent LBT failure in the SL carrier to perform LBT operation in this SL BWP;

[0151] B) UE does not perform SL BWP reselection according to this probability, still perform LBT operation in current SL BWP.

[0152] 2) If network side device does not configure BWP reselection probability for UE, UE autonomously reselects to other SL BWP which does not trigger consistent LBT failure in the SL carrier to perform LBT operation in this SL BWP.

[0153] The resource reselection method provided in the embodiments of the present application can provide multiple ways of determining reselected resources for different target information, so that in the case that the UE triggers LBT failure based on different resource granularity, a suitable way can be selected to reselect resources to perform LBT operation on the resources, thereby ensuring the communication requirement of data transmission between UEs, and improving the success rate of UE channel access.

[0154] Optionally, in the embodiments of the present application, the resource reselection method provided in the embodiments of the present application further includes the following steps 601 to 604.

[0155] Step 601: The network side device sends a sixth message to the UE.

[0156] Step 602: The UE receives the sixth message sent by the network side device.

[0157] In the embodiments of the present application, the sixth message includes a sidelink unlicensed spectrum resource.

[0158] In the embodiments of the present application, the network side device can configure the unlicensed spectrum resource for LBT detection to the connected mode UE through the sixth message, so that the UE performs LBT detection on the unlicensed spectrum resource and reports the LBT detection result to the network side device.

[0159] Optionally, in the embodiments of the present application, the sixth message can be a system information block (SIB) message.

[0160] Optionally, in the embodiments of the present application, the sixth message can carry an LBT detection period, and the UE can perform LBT detection based on the LBT detection period.

[0161] Step 603: The UE performs LBT detection on the sidelink unlicensed spectrum resource and sends the LBT detection result to the network side device.

[0162] Step 604: The network side device receives the LBT detection result sent by the UE.

[0163] Optionally, in the embodiments of the present application, the LBT detection result can assist the UE to perform autonomous resource selection on the sidelink unlicensed spectrum.

[0164] Optionally, in the embodiments of the present application, the LBT detection result can be that the UE performs LBT successfully on a certain resource, or that the UE performs LBT failure on a certain resource.

[0165] It should be noted that the resource reselection method provided in the embodiments of the present application can also be executed independently, that is, the steps 601 to 604 provided in the embodiments of the present application can be executed without executing the steps 21 to 23.

[0166] In the embodiments of the present application, when the UE has no communication demand, the network side device can configure an unlicensed spectrum resource for the UE, so that the UE performs LBT detection on the unlicensed spectrum resource and sends the LBT detection result to the network side device; when the UE has a communication demand, the network side device indicates an idle resource to the UE, thereby assisting the UE to select a suitable resource.

[0167] It should be noted that the resource reselection method provided in the embodiments of the present application can also be executed independently, that is, the steps 601 to 604 provided in the embodiments of the present application can be executed without executing the steps 21 to 23.

[0168] Figure 4 A possible structural schematic diagram of the resource reselection apparatus involved in the embodiments of the present application is shown. As shown in the figure, the resource reselection apparatus 40 can include a determination module 41 and an execution module 42. Figure 4

[0169] The determination module 41 is configured to determine a second resource according to target information in the case that the UE fails to perform LBT on a first resource. The execution module 42 is configured to perform LBT on the second resource. The target information includes at least one of the following: a resource configured by a network side device, timer information, resource type information, and resource granularity reselection probability, wherein the timer information is used to indicate a time length for stopping performing LBT.

[0170] In a possible implementation, in the case that the target information includes the resource configured by the network side device, the determination module 41 is specifically configured to determine a resource pre-configured by the network side device as the second resource; or, in the case that the second message sent by the network side device includes configuration information, the determination module 41 is specifically configured to determine a third resource included in the configuration information as the second resource; or, in the case that the second message does not include the configuration information and the second message indicates that the UE is allowed to perform LBT resource reselection, the determination module 41 is specifically configured to determine a fourth resource as the second resource, wherein the fourth resource is a resource that does not trigger persistent LBT failure.

[0171] In a possible implementation, the determination module 41 is specifically configured to send a first message to the network side device, wherein the first message is used to request LBT resource reselection; and receive a second message sent by the network side device, wherein the second message includes configuration information.

[0172] ​In a possible implementation, the first message includes at least one of the following: the first resource, and a frequency at which the UE fails to perform LBT on the first resource.

[0173] In a possible implementation, when the target information includes timer information, the determining module 41 is specifically configured to, when the UE is preconfigured with first timer information, determine a fifth resource as the second resource after a timer reaches a first time length indicated by the first timer information, the fifth resource being any one of the following: a resource preconfigured by the network-side device, and a resource autonomously selected by the UE; or the determining module 41 is specifically configured to, when the UE is not preconfigured with the first timer information, receive second timer information sent by the network-side device, and determine a sixth resource as the second resource after a timer reaches a second time length indicated by the second timer information, the sixth resource being any one of the following: a resource preconfigured by the network-side device, a resource configured by the network-side device through configuration information, and a resource autonomously selected by the UE.

[0174] In a possible implementation, the determining module 41 is specifically configured to send, to the network-side device, a third message used to indicate that the UE fails to perform LBT on the first resource, and receive a fourth message sent by the network-side device, the fourth message including the second timer information.

[0175] In a possible implementation, the resource reselection apparatus 40 further includes a clearing module. The performing module 42 is specifically configured to stop performing LBT when the timer does not reach a target time length. The clearing module is configured to clear the LBT counter after the timer reaches the target time length, the target time length being the first time length or the second time length.

[0176] In a possible implementation, the target information includes resource type information used to indicate a first type resource and a second type resource. The determining module 41 is specifically configured to determine the second type resource as the second resource, the first type resource having a higher priority than the second type resource.

[0177] In a possible implementation, the resource reselection apparatus 40 further includes a sending module and a receiving module. The sending module is configured to, before determining the second type resource as the second resource, send, to the network-side device, a fifth message used to indicate that the UE fails to perform LBT on the first type resource or the second type resource. The receiving module is configured to receive resource type information sent by the network-side device.

[0178] In a possible implementation, 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.

[0179] In a possible implementation, in a case where the target information includes the resource granularity reselection probability, the determination module 41 is specifically configured to determine the seventh resource as the second resource in a case where the resource granularity reselection probability meets a preset condition, the seventh resource being a resource that does not trigger a persistent LBT failure; or the determination module 41 is specifically configured to determine the first resource as the second resource in a case where the resource granularity reselection probability does not meet the preset condition.

[0180] In a possible implementation, the resource reselection apparatus 40 further includes a receiving module and a sending module. The receiving module is configured to receive a sixth message sent by a network side device, the sixth message including a sidelink unlicensed spectrum resource. The execution module 42 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.

[0181] The resource reselection apparatus provided in the embodiments of the present application can determine a suitable resource (i.e., the second resource) according to target information in a case where the UE fails to perform LBT on an unlicensed spectrum resource, perform LBT on the resource, and provide multiple ways of determining the reselected resource for different target information, thereby ensuring the communication requirement of data transmission between UEs and improving the success rate of channel access.

[0182] The resource reselection apparatus in the embodiments of the present application can be an apparatus, an apparatus with an operating system, or a UE, and can also be a component, an integrated circuit, or a chip in the UE. The apparatus or the UE can be a mobile terminal or a non-mobile terminal. Exemplarily, the mobile terminal can include, but is not limited to, the types of the UE 11 listed above, and the non-mobile terminal can be a server, a network attached storage (NAS), a personal computer (PC), a television (TV), a teller machine, or a self-service machine, and the like, without specific limitation in the embodiments of the present application.

[0183] The resource reselection apparatus provided in the embodiments of the present application can implement each process of the UE in the method embodiments and achieve the same technical effects. To avoid repetition, details are not described herein.

[0184] Figure 5 A possible structural schematic diagram of the resource reselection apparatus involved in the embodiments of the present application is shown. As shown in the figure, the resource reselection apparatus 50 can include a determination module 51 and a sending module 52. Figure 5

[0185] ​The determining module 51 is configured to obtain target information. The sending module 52 is configured to send the target information to the 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 following: a resource configured by a network side device, timer information, resource type information, and resource granularity reselection probability, where the timer information is used to indicate a time length for stopping performing LBT.

[0186] In a possible implementation, in a case where the target information includes the resource configured by the network side device, the sending module 52 is specifically configured to send a second message to the UE. The second message includes configuration information, and the configuration information includes a third resource. Alternatively, the second message does not include the configuration information, and the second message indicates that the UE is allowed to perform LBT resource reselection.

[0187] In a possible implementation, 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 send a second message to the UE, where the second message includes configuration information.

[0188] In a possible implementation, the first message includes at least one of the following: a first resource and a frequency of LBT failure of the UE on the first resource.

[0189] In a possible implementation, in a case where the target information includes the timer information, the sending module 52 is specifically configured to send second timer information to the UE, where the second timer information is used for the UE to determine a sixth resource as a resource for performing LBT after a second time length indicated by the second timer information is reached, and the sixth resource is any one of the following: a resource preconfigured by the network side device, a resource configured by the network side device through the configuration information, and a resource autonomously selected by the UE.

[0190] In a possible implementation, the sending module 52 is specifically configured to receive a third message sent by the UE, where the third message is used to indicate LBT failure of the UE on a first resource; and send a fourth message to the UE, where the fourth message includes second timer information.

[0191] In a possible implementation, the target information includes resource type information, where the resource type information is used to indicate a first type resource and a second type resource, and a priority of the first type resource is higher than a priority of the second type 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 LBT failure of the UE on the first type resource or the second type resource; and send the resource type information to the UE.

[0192] In a possible implementation, 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.

[0193] In a possible implementation, the resource reselection apparatus 50 further includes a receiving module. The sending module 52 is configured to send, to the UE, a sixth message including the sidelink unlicensed spectrum resource. The receiving module is further configured to receive an LBT detection result sent by the UE, the LBT detection result being a result of LBT detection performed by the UE on the sidelink unlicensed spectrum resource.

[0194] The embodiment of the present application provides a resource reselection apparatus, which can send target information to the UE, so that the UE reselects a suitable resource (i.e., a second resource) according to the target information, performs an LBT operation on the resource, and for different target information, multiple ways of determining the reselected resource are given, so as to guarantee the communication requirement of data transmission between UEs, thereby improving the success rate of channel access.

[0195] The resource reselection apparatus in the embodiment of the present application can be an apparatus or a network side device, and can also be a component, an integrated circuit or a chip in the network side device.

[0196] The resource reselection apparatus provided in the embodiment of the present application can implement each process implemented by the network side device in the method embodiment, and achieve the same technical effects. To avoid repetition, details are not described herein.

[0197] Optionally, as shown in Figure 6 The embodiment of the present application also provides a communication device 600, which includes a processor 601, a memory 602, and a program or instruction stored in the memory 602 and executable on the processor 601. For example, when the communication device 600 is a UE, the program or instruction is executed by the processor 601 to implement each process of the UE side in the method embodiment, and achieve the same technical effects. When the communication device 600 is a network side device, the program or instruction is executed by the processor 601 to implement each process of the network side device in the method embodiment, and achieve the same technical effects. To avoid repetition, details are not described herein.

[0198] The UE provided by the embodiment of the present application also includes a processor and a communication interface. The processor is configured to determine a second resource according to target information in the case that the UE fails to perform LBT on a first resource, and perform LBT on the second resource. The target information includes at least one of the following: a resource configured by a network side device, timer information, resource type information, and resource granularity reselection probability. The timer information is used to indicate a time length for stopping LBT. The UE embodiment corresponds to the UE side method embodiment described above. Each implementation process and implementation manner of the method embodiment described above can be applied to the UE embodiment, and the same technical effects can be achieved. Specifically, Figure 7 A hardware structure diagram of a UE according to an embodiment of the present application is shown in FIG. 20.

[0199] The UE 100 includes, but is not limited to, at least part of the following components: a radio frequency unit 101, a network module 102, an audio output unit 103, an input unit 104, a sensor 105, a display unit 106, a user input unit 107, an interface unit 108, a memory 109, and a processor 110, etc.

[0200] Those skilled in the art can understand that the UE 100 can also include a power supply (such as a battery) for supplying power to each component. The power supply can be logically connected to the processor 110 through a power management system, so as to realize functions such as management of charging, discharging, and power consumption management through the power management system. Figure 7 The UE structure shown in FIG. 20 does not constitute a limitation on the UE. The UE can include more or fewer components than those shown in the figure, or combine certain components, or have a different arrangement of components, which will not be described here.

[0201] It should be understood that in the embodiment of the present application, the input unit 104 can include a graphics processing unit (GPU) 1041 and a microphone 1042. The graphics processing unit 1041 processes image data of a still picture or a video obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode. The display unit 106 can include a display panel 1061, which can be configured in the form of a liquid crystal display, an organic light emitting diode, etc. The user input unit 107 includes a touch panel 1071 and other input devices 1072. The touch panel 1071 is also called a touch screen. The touch panel 1071 can include two parts: a touch detection device and a touch controller. The other input devices 1072 can include, but are not limited to, a physical keyboard, function keys (such as volume control keys, on-off keys, etc.), a trackball, a mouse, a joystick, etc., which will not be described here.

[0202] In the embodiments of the present application, the radio frequency unit 101 receives the downlink data from the network side device, and then sends the data to the processor 110 for processing. In addition, the radio frequency unit 101 sends the uplink data to the network side device. Generally, the 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, etc.

[0203] The memory 109 can be used to store software programs or instructions and various data. The memory 109 can mainly include a program or instruction storage area and a data storage area, wherein the program or instruction storage area can store an operating system, application programs or instructions required by at least one function (such as a sound playing function, an image playing function, etc.), etc. In addition, the memory 109 can include a high-speed random access memory, and can also include a non-volatile memory, which can be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically EPROM (EEPROM), or a flash memory. For example, at least one magnetic disk storage device, a flash memory device, or other non-volatile solid-state memory device.

[0204] The processor 110 can include one or more processing units; optionally, the processor 110 can integrate an application processor and a modem processor, wherein the application processor mainly processes the operating system, user interface, and application programs or instructions, and the modem processor mainly processes wireless communication, such as a baseband processor. It can be understood that the above-mentioned modem processor can also not be integrated into the processor 110.

[0205] The processor 110 is configured to determine a second resource according to target information in a case where the UE fails to perform LBT on a first resource; and perform LBT on the second resource. The target information includes at least one of the following: a resource configured by the network side device, timer information, resource type information, and resource granularity reselection probability, wherein the timer information is used to indicate a time length for stopping performing LBT.

[0206] The embodiments of the present application provide a UE, in a case where the UE fails to perform LBT when attempting to acquire a transmission resource on an unlicensed spectrum resource, the UE can 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 the reselected resource are given, to ensure the communication needs of data transmission between UEs, thereby improving the success rate of UE channel access.

[0207] Optionally, in a case where the target information comprises 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 the second resource; or the processor 110 is specifically configured to receive a second message sent by the network-side device, and in a case where the second message comprises configuration information, determine a third resource comprised in the configuration information as the second resource, and in a case where the second message does not comprise the configuration information and the second message indicates that the UE is allowed to perform LBT resource reselection, determine a fourth resource as the second resource, the fourth resource being a resource that does not trigger persistent LBT failure.

[0208] Optionally, the processor 110 is specifically configured to send a first message to the network-side device, the first message being used to request LBT resource reselection; and receive a second message sent by the network-side device, the second message comprising configuration information.

[0209] Optionally, in a case where the target information comprises timer information, the processor 110 is specifically configured to, in a case where first timer information is pre-configured in the UE, determine a fifth resource as the second resource after a timer reaches a first time length indicated by the first timer information, the fifth resource being any one of a resource pre-configured by the network-side device, a resource autonomously selected by the UE; or the processor 110 is specifically configured to, in a case where the first timer information is not pre-configured in the UE, receive second timer information sent by the network-side device, and determine a sixth resource as the second resource after a timer reaches a second time length indicated by the second timer information, the sixth resource being any one of a resource pre-configured by the network-side device, a resource configured by the network-side device through the configuration information, a resource autonomously selected by the UE.

[0210] Optionally, the processor 110 is specifically configured to send a third message to the network-side device, the third message being used to indicate that the UE fails to perform LBT on the first resource; and receive a fourth message sent by the network-side device, the fourth message comprising second timer information.

[0211] Optionally, the processor 110 is further configured to, in a case where the timer does not reach a target time length, stop performing LBT; and after the timer reaches the target time length, clear a LBT counter, the target time length being the first time length or the second time length.

[0212] Optionally, the above target information comprises resource type information, the resource type information being used to indicate a first type resource and a second type resource. The processor 110 is specifically configured to determine the second type resource as the second resource, the priority of the first type resource being higher than the priority of the second type resource.

[0213] Optionally, the radio frequency unit 101 is configured to send a fifth message to the network side device before determining the second type of resource as the second resource, the fifth message being used to indicate that the UE fails to perform LBT on the first type of resource or the second type of resource; and receive resource type information sent by the network side device.

[0214] Optionally, when the target information includes the resource granularity reselection probability, the processor 110 is specifically configured to determine a seventh resource as the second resource when the resource granularity reselection probability meets a preset condition, the seventh resource being a resource that does not trigger persistent 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 the preset condition.

[0215] Optionally, the radio frequency unit 101 is configured to receive a sixth message sent by the network side device, the sixth message including 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 the LBT detection result to the network side device.

[0216] The UE provided by the embodiments of the present application can implement each process of the above-mentioned method embodiments and achieve the same technical effects. To avoid repetition, details are not described here.

[0217] The embodiments of the present application also provide a network side device, which includes a processor and a communication interface, the communication interface being configured to send target information to a UE, the target information being used for the UE to reselect a resource on which to perform LBT. The target information includes at least one of the following: a resource configured by the network side device, timer information, resource type information, and resource granularity reselection probability, the timer information being used to indicate a time length during which LBT is stopped. The network side device embodiment corresponds to the above-mentioned network side device method embodiment, and each implementation process and implementation manner of the above-mentioned method embodiment can be applied to the network side device embodiment and achieve the same technical effects.

[0218] Specifically, the embodiments of the present application also provide a network side device. As shown in Figure 8 The network side device 800 includes an antenna 81, a radio frequency device 82, and a baseband device 83. The antenna 81 is connected to the radio frequency device 82. In the uplink direction, the radio frequency device 82 receives information through the antenna 81 and sends the received information to the baseband device 83 for processing. In the downlink direction, the baseband device 83 processes the information to be sent and sends it to the radio frequency device 82. The radio frequency device 82 processes the received information and sends it out through the antenna 81.

[0219] 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 a resource for performing LBT. The target information includes at least one of the following: a resource configured by a network side device, timer information, resource type information, and resource granularity reselection probability, and the timer information is used to indicate a time length for stopping performing LBT.

[0220] The network side device provided in the embodiments of the present application can send target information to the UE, so that the UE reselects a suitable resource (i.e., a second resource) according to the target information to perform LBT on the resource, and for different target information, multiple ways of determining the reselected resource are given, so as to ensure the communication requirement of data transmission between UEs, thereby improving the success rate of channel access.

[0221] The network side device provided in the embodiments of the present application can implement each process of the above method embodiments and achieve the same technical effects. To avoid repetition, details are not described herein.

[0222] The above frequency band processing device can be located in the baseband device 83, and the method performed by the network side device in the above embodiments can be implemented in the baseband device 83, which includes a processor 84 and a memory 85.

[0223] The baseband device 83 can include at least one baseband board, and a plurality of chips are arranged on the baseband board, as shown in the following figure. Figure 8 For example, one of the chips is the processor 84, which is connected with the memory 85 to call the program in the memory 85 and perform the operation of the network side device shown in the above method embodiments.

[0224] The baseband device 83 can also include a network interface 86 for interacting with the radio frequency device 82, and the interface is, for example, a common public radio interface (CPRI).

[0225] Specifically, the network side device of the embodiments of the present application further includes 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 perform the method performed by each module and achieve the same technical effects. To avoid repetition, details are not described herein.

[0226] The embodiments of the present application also provide a readable storage medium, and the readable storage medium stores programs or instructions, which are executed by a processor to implement each process of the above resource reselection method embodiments and achieve the same technical effects. To avoid repetition, details are not described herein.

[0227] The processor is the processor in the UE in the above embodiments. The readable storage medium includes a computer readable storage medium, such as a computer readable only memory (Read-Only Memory, ROM), a random access memory (Random Access Memory, RAM), a magnetic disk or an optical disk, etc. It should be noted that the readable storage medium can be non-volatile or volatile, and in addition, the readable storage medium can be non-transient.

[0228] The embodiment of the present application further provides a chip, which comprises a processor and a communication interface, the communication interface is coupled with the processor, the processor is used for running programs or instructions, realizes various processes of the above-mentioned resource reselection method embodiments, and can achieve the same technical effects. To avoid repetition, it will not be repeated here.

[0229] It should be understood that the chip mentioned in the embodiment of the present application can also be referred to as a system chip, a system chip, a chip system or a system on chip, etc.

[0230] The embodiment of the present application further provides a computer program / program product, which is stored in a non-transient readable storage medium, the program / program product is executed by at least one processor to realize various processes of the above-mentioned resource reselection method embodiments, and can achieve the same technical effects. To avoid repetition, it will not be repeated here.

[0231] It should be noted that in this paper, the term "include", "contain" or any other variant thereof is intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or includes elements inherent to such process, method, article or device. Without more limitations, the element defined by the statement "including a" does not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be pointed out that the scope of the method and device in the present application is not limited to the order of the functions shown or discussed, but also includes the functions performed in a substantially simultaneous manner or in the opposite order, for example, the described method can be performed in an order different from the described order, and various steps can be added, omitted or combined. In addition, the features described with reference to some examples can be combined in other examples.

[0232] Through the description of the above embodiments, those skilled in the art can clearly understand that the above-mentioned example methods can be realized by means of software and a necessary general hardware platform, and of course, can also be realized by hardware, but in many cases, the former is a better embodiment. Based on such understanding, the technical solutions of the present application can be embodied in the form of a computer software product in essence or in the form of a part that contributes to the prior art, which is stored in a storage medium (such as a ROM / RAM, a magnetic disc, an optical disc), and includes a plurality of instructions for causing a terminal (which can be a mobile phone, a computer, a server, an air conditioner, or a network side device, etc.) to execute the methods described in various embodiments of the present application.

[0233] The embodiments of the present application are described above in combination with the drawings, but the present application is not limited to the above-mentioned specific embodiments, and the above-mentioned specific embodiments are only illustrative and not restrictive. Those skilled in the art can make many forms under the inspiration of the present application without departing from the scope of the present application and the scope protected by the claims.

Claims

1. A resource reselection method, characterized by, Comprising: In a case where a user equipment (UE) performs a listen before talk (LBT) failure on a first resource, the UE determines a second resource according to target information; The UE performs an LBT on the second resource; Wherein the target information comprises at least one of the following: a resource configured by a network side device, a resource granularity reselection probability; In a case where the target information comprises the resource configured by the network side device, the UE determines the second resource according to the target information, comprising: The UE determines a third resource included in configuration information in a second message sent by the network side device as the second resource, in a case where the second message does not include the configuration information and the second message indicates that the UE is allowed to perform LBT resource reselection, the UE determines a fourth resource as the second resource, the fourth resource being a resource that has not triggered a persistent LBT failure.

2. The method of claim 1, wherein, The UE receives a second message sent by the network side device, comprising: The UE sends a first message to the network side device, the first message being used to request LBT resource reselection; The UE receives a second message sent by the network side device, the second message including the configuration information. The first message includes at least one of the following: the first resource, and a frequency of LBT failure of the UE on the first resource.

3. The method of claim 2, wherein, In a case where the target information comprises the resource granularity reselection probability, the UE determines the second resource according to the target information, comprising: In a case where the resource granularity reselection probability meets a preset condition, the UE determines a seventh resource as the second resource, the seventh resource being a resource that has not triggered a persistent LBT failure; Or, 4. The method of claim 3, wherein, In a case where the resource granularity reselection probability does not meet the preset condition, the UE determines the first resource as the second resource.

5. The method of claim 1, wherein, The method further comprises: The UE receives a sixth message sent by the network side device, the sixth message including a sidelink unlicensed spectrum resource; The UE performs an LBT detection on the sidelink unlicensed spectrum resource and sends an LBT detection result to the network side device. Comprising:

6. The method of claim 1, wherein, A network side device sends target information to a user equipment (UE), the target information being used for the UE to reselect a resource for performing a listen before talk (LBT); Wherein the target information comprises at least one of the following: a resource configured by a network side device, a resource granularity reselection probability; ​ 7. A resource reselection method, characterized by, ​ ​ ​ The resource configured by the network side device is used by the UE to perform LBT in a case where the UE triggers persistent LBT failure in one resource pool of an active sidelink bandwidth part configured by the network side device. The resource granularity reselection probability is used by the UE to determine whether to reselect a resource for performing LBT.

8. The method of claim 7, wherein, In a case where the target information includes the resource configured by the network side device, the network side device sends target information to the UE, including: The network side device sends a second message to the UE; 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.

9. The method of claim 8, wherein, The network side device sends a second message to the UE, including: The network side device receives a first message sent by the UE, and the first message is used to request LBT resource reselection; The network side device sends a second message to the UE, and the second message includes the configuration information.

10. The method of claim 7, wherein, The method further includes: The network side device sends a sixth message to the UE, and the sixth message includes a sidelink unlicensed spectrum resource; The network side device receives an LBT detection result sent by the UE, and the LBT detection result is a result of LBT detection performed by the UE on the sidelink unlicensed spectrum resource.

11. An apparatus for resource reselection, the apparatus comprising: It includes: A determination module and an execution module; The determination module is configured to determine a second resource according to target information in a case where a user equipment (UE) fails to perform listen before talk (LBT) on a first resource; The execution module is configured to perform LBT on the second resource; The target information includes at least one of the following: a resource configured by a network side device, and a resource granularity reselection probability; The target information includes the resource configured by the network side device, the first resource and the second resource are resources in two resource pools of an active sidelink bandwidth part configured by the network side device, and a resource pool in which the first resource is located is a resource pool in which the UE triggers persistent LBT failure, and a resource pool in which the second resource is located is a resource pool in which persistent LBT failure is not triggered; The resource granularity reselection probability is configured by the network side device, and the resource granularity reselection probability is used by the UE to determine whether to reselect a resource for performing LBT.

12. The apparatus of claim 11, wherein, In a case where the target information includes the resource configured by the network side device, The determination module is specifically configured to determine a resource pre-configured by the network side device as the second resource; Or, The determination module is specifically configured to receive a second message sent by the network side device, in a case where the second message includes configuration information, determine a third resource included in the configuration information as the second resource, in a case where the second message does not include configuration information and the second message indicates that the UE is allowed to perform LBT resource reselection, determine a fourth resource as the second resource, and the fourth resource is a resource in which persistent LBT failure is not triggered.

13. The apparatus of claim 12, wherein, The determining module is specifically configured to send a first message to the network side device, the first message being used for requesting LBT resource reselection; and receive a second message sent by the network side device, the second message including the configuration information.

14. The apparatus of claim 11, wherein, In a case where the target information includes the resource granularity reselection probability, The determining module is specifically configured to determine the first resource as the second resource in a case where the resource granularity reselection probability does not meet the preset condition. Or, The determining module is specifically configured to determine the first resource as the second resource in a case where the resource granularity reselection probability does not meet the preset condition.

15. The apparatus of claim 11, wherein, The apparatus further includes a receiving module and a sending module. The receiving module is configured to receive a sixth message sent by the network side device, the sixth message including sidelink unlicensed spectrum resources. The execution module is further configured to perform LBT detection on the sidelink unlicensed spectrum resources. The sending module is configured to send an LBT detection result to the network side device.

16. An apparatus for resource reselection, the apparatus comprising: includes: a sending module; The sending module is configured to send target information to a user equipment (UE), the target information being used for the UE to reselect a resource for performing listen before talk (LBT); The target information includes at least one of the following: a resource configured by a network side device and a resource granularity reselection probability. The resource configured by the network side device is used for the UE to perform LBT on a resource in another resource pool of an active sidelink bandwidth part that has not triggered persistent LBT failure in a case where the UE triggers persistent LBT failure in one resource pool of the active sidelink bandwidth part configured by the network side device. The resource granularity reselection probability is used for the UE to determine whether to reselect a resource for performing LBT.

17. The apparatus of claim 16, wherein, In a case where the target information includes the resource configured by the network side device, the sending module is specifically configured to send a second message to the UE; the second message includes configuration information, the configuration information including 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.

18. The apparatus of claim 17, wherein, The sending module is specifically configured to receive a first message sent by the UE, the first message being used for requesting LBT resource reselection; and send a second message to the UE, the second message including the configuration information.

19. The apparatus of claim 16, wherein, The apparatus further includes a receiving module; The sending module is configured to send a sixth message to the UE, the sixth message including sidelink unlicensed spectrum resources. The receiving module is further configured to receive an LBT detection result sent by the UE, the LBT detection result being a result of LBT detection performed by the UE on the sidelink unlicensed spectrum resources.

20. A user equipment (UE), comprising: includes a processor, a memory, and a program or instruction stored on the memory and executable on the processor, the program or instruction being executed by the processor to implement the steps of the resource reselection method according to any one of claims 1 to 6.

21. A network-side device, comprising: comprising a processor, a memory, and a program or instructions stored on the memory and executable on the processor, the program or instructions, when executed by the processor, implement the steps of the resource reselection method according to any one of claims 7 to 10.

22. A readable storage medium, characterized by, The program or instructions stored on the readable storage medium, when executed by the processor, implement the steps of the resource reselection method according to any one of claims 1 to 6, or implement the steps of the resource reselection method according to any one of claims 7 to 10.

23. A communication system, characterized by The communication system comprises the resource reselection apparatus according to any one of claims 11 to 15 and the resource reselection apparatus according to any one of claims 16 to 19; or, The communication system comprises the user equipment UE according to claim 20 and the network side equipment according to claim 21.

Images