WO2024032497A1

WO2024032497A1 - Channel access process processing method and apparatus, and terminal

Info

Publication number: WO2024032497A1
Application number: PCT/CN2023/111218
Authority: WO
Inventors: 黎建辉; 肖潇; 姜蕾; 杨聿铭
Original assignee: 维沃移动通信有限公司
Priority date: 2022-08-09
Filing date: 2023-08-04
Publication date: 2024-02-15
Also published as: CN117676746A

Abstract

The present application relates to the field of wireless communications, and discloses a channel access process processing method and apparatus, and a terminal. The channel access process processing method in embodiments of the present application comprises: a first terminal acquires sidelink (SL) resource information during executing a first channel access process of a first type, wherein the first channel access process is used for performing SL transmission with a second terminal; and the first terminal executes a target operation on the basis of the SL resource information, wherein the target operation comprises one of: maintaining the first channel access process; switching to a second channel access process of a second type; and terminating the first channel access process.

Description

Processing method, device and terminal for channel access process

cross reference

This application requires the priority of a Chinese patent application submitted to the China Patent Office on August 9, 2022, with the application number 202210950559.5 and the invention name "Processing Method, Device and Terminal for Channel Access Process". The entire content of this application has been approved. This reference is incorporated into this application.

Technical field

The present application belongs to the field of wireless communication technology, and specifically relates to a processing method, device and terminal for a channel access process.

Background technique

In future communication systems, unlicensed bands can be used as a supplement to licensed bands to help operators expand services. In order to be consistent with New Radio (NR) deployment and maximize NR-based unlicensed access as much as possible, unlicensed frequency bands can operate in the 5GHz, 37GHz and 60GHz frequency bands. The large bandwidth (80MHz or 100MHz) of the unlicensed frequency band can reduce the implementation complexity of base stations and terminals (User Equipment, UE). Since the unlicensed frequency band is shared by multiple wireless access technologies (Radio Access Technology, RAT), such as WiFi, radar, Long Term Evolution (LTE) licensed spectrum assisted access (License-Assisted Access, LAA), etc., therefore In some countries or regions, the use of unlicensed frequency bands must comply with regulations to ensure that all devices can use the resource fairly, such as listen before talk (LBT), maximum channel occupancy time (maximum channel occupancy time, MCOT) and other rules. When the transmission node needs to send information, it needs to perform LBT first, and performs power detection (ED) on the surrounding nodes. When the detected power is lower than a threshold, the channel is considered idle, and the transmission node can to send. Otherwise, the channel is considered busy and the transmitting node cannot send. The transmission node can be a base station, UE, WiFi AP, etc. After the transmission node starts transmitting, the occupied channel time COT cannot exceed MCOT. In addition, according to occupied channel bandwidth (OCB) regulation, in the unlicensed frequency band, the transmission node must occupy at least 70% (60GHz) or 80% (5GHz) of the entire frequency band during each transmission.

Among them, the commonly used types of LBT can be divided into Type 1 and Type 2. Type2 also includes Type2A, Type2B and Type2C. Type1LBT is a channel listening mechanism based on back-off. When the transmission node detects that the channel is busy, it backs off and continues listening until it detects that the channel is empty. Type2C means that the sending node does not perform LBT, that is, no LBT or immediate transmission. Type2, Type2A and Type2B LBT are one-shot LBT, that is, the node performs LBT once before transmission. If the channel is empty, it will transmit, and if the channel is busy, it will not transmit.

In related technologies, a base station (for example, an evolved Node B (eNB)/the next Generation Node B (gNB)) can be accessed according to the node's own downlink channel, or the uplink channel of the UE. Channel access initiates channel occupancy (Channel Occupancy). The eNB/gNB/UE can determine a maximum channel occupancy time (Channel Occupancy Time, COT) through the channel access priority class (CAPC). When the eNB/gNB accesses the channel through the Type 1 channel access method and obtains the CO, it can instruct the UE to share this channel occupancy (Channel Occupancy, CO) with itself, which is called COT sharing (sharing). In addition, when the UE accesses the channel through the Type1 channel access method and obtains the CO, it can instruct the eNB/gNB to share this CO with itself, which is also called COT sharing.

When an unlicensed frequency band is introduced in sidelink (SL, also called secondary link, side link or side link, etc.) transmission, the UE can access the channel through the channel access process to obtain channel occupancy. However, When the channel access process in the UE process performs side link transmission, it may receive side link resource information sent by other devices (for example, the base station or the opposite end UE). For example, the base station or the opposite end UE shares the preempted Channel occupation, etc. In this case, how the UE handles the ongoing channel access process is a technical issue that needs to be solved in related technologies.

Contents of the invention

Embodiments of the present application provide a method, device and terminal for processing a channel access process, which can solve the problem of how a UE handles an ongoing channel access process during side link transmission.

In a first aspect, a method for processing a channel access process is provided, which includes: a first terminal acquiring side link SL resource information during a process of executing a first type of first channel access process, wherein the first terminal A channel access process is used for SL transmission with the second terminal; based on the SL resource information, the first terminal performs a target operation, wherein the target operation includes one of the following: maintaining the first Channel access process; switch to a second channel access process of the second type; terminate the first channel access process.

In a second aspect, a processing device for a channel access process is provided, including: an acquisition module configured to acquire SL resource information during the execution of a first channel access process of the first type, wherein the first The channel access process is used to perform SL transmission with the second terminal; the execution module is used to perform target operations based on the SL resource information, wherein the target operations include one of the following: maintaining the first channel Access process; switch to a second type of second channel access process; terminate the first channel access process.

In a third aspect, a terminal is provided. The terminal includes a processor and a memory. The memory stores programs or instructions that can be run on the processor. When the program or instructions are executed by the processor, the following implementations are implemented: The steps of the method described in one aspect.

A fourth aspect provides a terminal, including a processor and a communication interface, wherein the processor is used to implement the steps of the method described in the first aspect, and the communication interface is used to communicate with an external device.

In a fifth aspect, a readable storage medium is provided. Programs or instructions are stored on the readable storage medium. When the programs or instructions are executed by a processor, the steps of the method described in the first aspect are implemented.

In a sixth aspect, a chip is provided. The chip includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run programs or instructions to implement the method described in the first aspect. A step of.

In a seventh aspect, a computer program/program product is provided, the computer program/program product being stored in a memory In the storage medium, the computer program/program product is executed by at least one processor to implement the steps of the method described in the first aspect.

In this embodiment of the present application, during the process of executing the first type of first channel access process for SL transmission with the second terminal, the first terminal acquires side link resource information, and according to the side link channel resource information, maintain the first channel access, switch to the second type of second channel access process or terminate the first channel access process, thereby solving the problem of how the UE handles the ongoing channel during side link transmission. Issues with the access process.

Description of drawings

Figure 1 shows a block diagram of a wireless communication system to which embodiments of the present application are applicable;

Figure 2 shows a schematic flow chart of the processing method of the channel access process provided by the embodiment of the present application;

Figure 3 shows a schematic structural diagram of a processing device for a channel access process provided by an embodiment of the present application;

Figure 4 shows a schematic structural diagram of a communication device provided by an embodiment of the present application;

Figure 5 shows a schematic diagram of the hardware structure of a terminal provided by an embodiment of the present application.

Detailed ways

The technical solutions in the embodiments of the present application will be clearly described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art fall within the scope of protection of this application.

The terms "first", "second", etc. in the description and claims of this application are used to distinguish similar objects and are not used to describe a specific order or sequence. It is to be understood that the terms so used are interchangeable under appropriate circumstances so that the embodiments of the present application can be practiced in sequences other than those illustrated or described herein, and that "first" and "second" are distinguished objects It is usually one type, and the number of objects is not limited. For example, the first object can be one or multiple. In addition, "and/or" in the description and claims indicates at least one of the connected objects, and the character "/" generally indicates that the related objects are in an "or" relationship.

It is worth pointing out that the technology described in the embodiments of this application is not limited to Long Term Evolution (LTE)/LTE Evolution (LTE-Advanced, LTE-A) systems, and can also be used in other wireless communication systems, such as code 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" in the embodiments of this application are often used interchangeably, and the described technology can be used not only for the above-mentioned systems and radio technologies, but also for other systems and radio technologies. The following description describes a New Radio (NR) system for example purposes, and NR terminology is used in much of the following description, but these techniques can also be applied to applications other than NR system applications, such as 6th ^generation Generation, 6G) communication system.

Figure 1 shows a block diagram of a wireless communication system to which embodiments of the present application are applicable. Wireless communication systems include relay terminals Terminal 11, network side device 12 and remote terminal 13. In the embodiment of the present application, the remote terminal 13 communicates with the relay terminal 11 through the PC5 (secondary link) interface, and the relay terminal 11 communicates with the network side device 12 through the Uu interface.

Among them, the relay terminal 11 may also be called a relay terminal device or a relay user terminal (User Equipment, UE), and the remote terminal 13 may also be called a remote terminal device or a remote UE. The subsequent terminal 11 and the remote terminal 13 can be a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (Laptop Computer), or a notebook computer, a personal digital assistant (Personal Digital Assistant, PDA), a palmtop computer, a netbook, Ultra-mobile personal computer (UMPC), Mobile Internet Device (MID), Wearable Device (Wearable Device) or Vehicle User Equipment (VUE), Pedestrian User Equipment (Pedestrian User Equipment) , PUE) and other terminal-side devices, wearable devices include: bracelets, headphones, glasses, etc. It should be noted that the embodiment of the present application does not limit the specific types of the relay terminal 11 and the remote terminal 13 . The network side device 12 may be a base station or a core network, where the base station may be called a node B, an evolved node B, an access point, a base transceiver station (Base Transceiver Station, BTS), a radio base station, a radio transceiver, or a basic service Set (Basic Service Set, BSS), Extended Service Set (ESS), B node, evolved B node (eNB), home B node, home evolved B node, Wireless Local Area Network (Wireless Local Area Network, WLAN ) access point, WiFi node, Transmitting Receiving Point (TRP) or some other appropriate term in the field, as long as the same technical effect is achieved, the base station is not limited to specific technical terms. It needs to be explained that , in the embodiment of this application, only the base station in the NR system is taken as an example, but the specific type of the base station is not limited.

The processing solution for the channel access process provided by the embodiments of the present application will be described in detail below with reference to the accompanying drawings through some embodiments and their application scenarios.

FIG. 2 shows a schematic flowchart of a channel access process processing method in an embodiment of the present application. The method 200 can be executed by the first terminal. In other words, the method may be performed by software or hardware installed on the first terminal. As shown in Figure 2, the method may include the following steps.

S210: The first terminal acquires SL resource information while executing a first channel access process of the first type, where the first channel access process is used for SL transmission with the second terminal.

In this embodiment of the present application, the first type of first channel access process may be Type 1 (Type 1), that is, the first channel access process is a Type 1 LBT process. That is to say, the first terminal is configured to communicate with the second terminal. For SL transmission, listen to the channel to obtain SL transmission resources. Therefore, the first terminal in the embodiment of this application may be a terminal that accesses the channel in the unlicensed spectrum in a type 1LBT manner, which may be called an initiator UE.

S220: Based on the SL resource information, the first terminal performs a target operation.

Wherein, the target operation includes one of the following:

Maintain the first channel access process; for example, the first terminal uses the first channel access process to transmit part or all of the SL transmission information.

Switch to a second channel access process of the second type; for example, the first terminal switches to type 2LBT Channel access.

Terminate the first channel access process. For example, the first terminal terminates the first channel access process and switches to the second channel access process.

Through the technical solution provided by the embodiments of the present application, the first terminal obtains the side link resource information during the process of executing the first type of first channel access process for SL transmission with the second terminal. According to The side link resource information can maintain the first channel access, switch to the second type of second channel access process, or terminate the first channel access process, thereby solving how the UE handles the side link transmission. Problems with the channel access process in .

In a possible implementation of the embodiment of the present application, the SL resource information may be used to indicate SL resources for SL transmission. For example, the SL resource information can be a dynamic authorization or configuration authorization sent by the base station, or the SL resource information can create a selected sidelink grant (SG) for the first terminal to obtain the SL resource information, or, The SL resource information may also be COT sharing information sent by the third terminal, that is, the SL resource information is used to indicate the first time-frequency resource of the COT shared by the third terminal. These situations are explained below respectively.

In a possible implementation, the first terminal obtaining the SL resource information may include: the first terminal receiving a dynamic authorization or configuration authorization sent by the base station, where the dynamic authorization or configuration authorization indicates the SL resource. That is to say, the SL resource information includes a new side link grant (SL grant) from the base station, where the SL grant can be dynamic grant (DG) or configured grant (CG).

Among them, the side link terminal (SL UE) includes two resource allocation methods, mode 1 (mode1) and mode 2 (mode2). Among them, mode1 is the base station scheduling resource, and mode2 is the resource that the UE decides to use for transmission. The SL resource information may come from the base station's broadcast message or preconfigured information. If the UE works within the range of the base station and has a Radio Resource Control (RRC) connection with the base station, it can be mode1 and/or mode2; if the UE works within the range of the base station but has no RRC connection with the base station, it can only work in mode2. If the UE is outside the base station range, it can only work in mode2 and perform SL transmission according to preconfigured information.

For mode 2, the specific working method is as follows: 1) After the resource selection is triggered, the sending (transmit, TX) UE first determines the resource selection window. The lower boundary of the resource selection window is at the T1 time after the resource selection is triggered. The resource selection The upper boundary is the T2 time after triggering, where T2 is the value selected by the UE implementation within the packet delay budget (packet delay budget, PDB) transmitted by its Transport Block (TB), and T2 is not earlier than T1. 2) Before resource selection, the UE needs to determine the candidate resource set for resource selection, based on the reference signal received power (Reference Signal Received Power, RSRP) measured on the resources within the resource selection window and the corresponding RSRP threshold ( threshold) for comparison, if the RSRP is lower than the RSRP threshold, then the resource can be included in the candidate resource set. 3) After the resource set is determined, the UE randomly selects transmission resources from the candidate resource set. In addition, the UE can reserve transmission resources for subsequent transmissions during this transmission.

In addition, SL UE has three ways to authorize resources, dynamic grant (DG, dynamic grant), configured grant (CG, configured grant) and authorization, selected sidelink grant (SG).

Among them, dynamic authorization and configuration authorization are used for UEs that use the mode1 resource allocation method. Dynamically authorized resources are dynamically scheduled by the base station, while configuration authorized resources are semi-statically scheduled by the base station. Configuration authorization is divided into two types, That is, configured grant type 1 (configured grant type 1) and configured grant type 2 (configured grant type 2). The former is configured by RRC signaling, and the latter is configured by RRC signaling and is configured by downlink control information (DCI). to activate/deactivate the configured grant.

The selected secondary link grant is used for UEs using the mode2 resource allocation method. The UE itself selects the resources used for transmission and grants these resources as selected secondary links.

Therefore, in a possible implementation, mode1UE may be executing the ongoing type1LBT (ongoing type1LBT) process and receive a new SL grant from the base station. The UE needs to process the new SL grant from the base station and determine whether to maintain or terminate. ongoing type1LBT process.

In a possible implementation, the first terminal obtaining the SL resource information may include: the first terminal creating a selected secondary link authorization, and the selected secondary link authorization indicates the SL resource. For example, if mode2UE creates a new SL grant, the UE needs to process the new SL grant created by itself and determine whether to maintain or terminate the ongoing type1LBT process.

In one possible implementation, in the case where the UE receives a new SL grant from the base station and a selected secondary link grant created by the UE, for example, when the UE receives an indication from the base station (via DCI) of a SL grant (such as DG , CG), or when the UE creates a new SL grant (such as selected sidelink grant, SG), the SL grant schedules SL transmission with type1LBT or type2LBT access, and there is an ongoing type1 channel in front of the location of the SL transmission Access process, S220 may include at least one of the following:

(1) When the first CAPC value is greater than or equal to the second CAPC value, the first terminal transmits the first SL transmission information corresponding to the SL resource through the first channel access process; that is, in If the first CAPC value is greater than or equal to the second CAPC value, the first terminal maintains the first channel access process and transmits the first SL transmission information corresponding to the SL resource indicated by the SL resource information through the first channel access process, For example, after receiving a new SL grant from the base station for scheduling a certain SL resource to transmit the first SL transmission information, if the first CAPC value is greater than or equal to the second CAPC value, the first terminal accesses the process through the first channel. The first SL transmission information is transmitted.

(2) When the first CAPC value is less than the second CAPC value, the first terminal terminates the first channel access process;

(3) The first terminal transmits the second SL transmission information corresponding to the SL resource through the first channel access process; for example, the first terminal maintains the first channel access process, and transmits the second SL transmission information corresponding to the SL resource through the first channel access process. A channel access process transmits second SL transmission information corresponding to the SL resource.

(4) When the first channel access process is used to send a physical side link feedback channel (PSFCH) and the second CAPC value is greater than or equal to the first threshold, the first The terminal maintains the first channel access process; for example, the CAPC value includes 1 to 4, then the first threshold can be any positive integer from 1 to 4, and the specific value can be determined according to actual applications.

(5) When the first channel access process is used to send PSFCH and the second CAPC value is less than or equal to the second threshold, the first terminal terminates the first channel access process; for example , the CAPC value includes 1 to 4, then the second threshold can be any positive integer from 1 to 4, and the specific value can be determined according to the actual application. implemented in this application In this example, the first threshold and the second threshold may be the same or different, and are not limited in the specific embodiments of this application.

In the above possible implementation manner, the first CAPC value is the CAPC value used by the first channel access process, and the second CAPC value is the CAPC value indicated by the SL resource information.

In each of the above possible implementations, optionally, the first SL transmission information or the second SL transmission information includes at least one of the following:

·Physical SideLink Shared Channel (PSSCH);

·Physical SideLink Control Channel (PSCCH);

·Physical SideLink Broadcast Channel (PSBCH);

·PSFCH;

·SideLink Synchronization Signal Block (S-SSB).

In a possible implementation, in S210, the first terminal obtaining the SL resource information may include: the first terminal receiving the SL resource information sent by the third terminal, wherein the SL resource information is used for A first time-frequency resource indicating a channel occupancy time shared by the third terminal, where the third terminal includes the second terminal or a terminal other than the second terminal. In this possible implementation, the third terminal may indicate to the first terminal the first time-frequency resource of the shared COT through SL resource information. In this possible implementation, the SL resource information may be called COT shared information. (COT sharing information), the COT sharing information indicates SL authorization (that is, SL resources).

In this embodiment of the present application, a terminal that shares COT with other terminals can be called a COT-sharing UE (COT-sharing UE, for example, the above-mentioned third terminal), and the UE is in a SL-U COT sharing relationship. , indicating that the opposite end UE or other UEs can use the COT shared by themselves. Here, the COT-sharing UE may or may not be the initiator UE. There are two reasons why COT-sharing UE is not equivalent to initiator UE: 1. After initiator UE seizes the channel, it obtains a COT, but it does not have to do COT sharing; 2. The possibility that COT-sharing UE is not initiator UE cannot be ruled out , for example, UE1 is the initiator UE and shares COT with UE2. After UE2 uses this COT, it may also share the COT with UE3.

The terminal that receives the COT shared by other terminals can be called a COT-shared UE (COT-shared UE), that is, in the sidelink on Unlicensed band (SL-U) COT sharing relationship in an unlicensed frequency band, it receives COT-sharing UE sends COT sharing information. The COT sharing information indicates that COT-shared UE can use a shared COT based on the COT sharing information in the COT sharing information.

It should be noted that in some scenarios, the concept of COT-shared UE only refers to the UE that receives COT sharing information, and is not equivalent to "the UE that uses shared COT"; in other scenarios, COT-shared UE refers to "UE using shared COT". At this time, COT-shared UE can also be called response UE. The specific meaning of COT-share UE needs to be understood according to each embodiment.

In a possible implementation, in the case where the first terminal receives the first time-frequency resource indicating the channel occupancy time COT shared by the third terminal from the third terminal, in S220, based on the SL resource information , the mentioned A terminal performs a target operation, including: the first terminal obtains a first time-frequency resource indicated by the SL resource information, and obtains a first time-frequency resource from the first time-frequency resource at one or more time-frequency positions in the first time-frequency resource. The channel access process is switched to the second channel access process.

For example, when the COT shared UE receives the SL grant (such as COT sharing grant) indicated by the COT sharing information and determines the time-frequency positions of the remaining COs in the CO initiated by the COT sharing UE, the UE can be in these positions. Switch from type1 channel access process to type 2 or type 2A channel access process.

Optionally, the SL resource information is also used to indicate at least one of the following:

(1) The equipment type of the third terminal, wherein the equipment type includes: a mode 1 terminal or a mode 2 terminal; wherein, a mode 1 (mode 1) terminal refers to a terminal whose resources are provided by a base station or other terminal equipment. , Mode 2 (mode2) terminal means that the resources of the terminal are determined by the terminal itself;

(2) Resource type, the resource type includes: mode 1 resource or mode 2 resource; wherein, the resource type can indicate the resource type corresponding to the shared COT, or it can indicate the third terminal The type of resource used. For example, mode 1 resources refer to the resources of the shared COT that are scheduled by the base station or resources scheduled by other terminals, and mode 2 resources refer to the resources of the shared COT that are selected by the third terminal.

(3) Authorization type, which includes one of the following: dynamic authorization, configuration authorization, and selected secondary link authorization. The authorization type may indicate the resource type corresponding to the shared COT, or may indicate the authorization type used by the third terminal.

Optionally, in the case where the SL transmission scheduled by the SL resource information is PSSCH and/or PSCCH transmission on the first time-frequency resource corresponding to the shared COT, and at least one of the following is satisfied, the third A terminal can assume that the first time-frequency resource corresponding to the shared COT has any priority:

The authorization type is dynamic authorization;

The authorization type is configuration authorization;

The resource type is Mode 1 resource;

The device type of the second terminal is a mode 1 terminal;

The equipment type of the first terminal is a mode 1 terminal.

For example, if the grant type of shared COT is CG or DG, or the resource type of shared COT is mode1 resource, or the UE's COT sharing UE's UE type is mode1UE, and the SL transmission is PSSCH and/or on the resource indicated by shared COT or PSCCH transmission, the UE can assume that the shared COT is of any priority type.

In the above possible implementation manner, optionally, the third terminal is a mode 1 terminal or a mode 2 terminal. For example, COT sharing UE is mode1UE or mode2UE.

Optionally, the first terminal is a mode 1 terminal or a mode 2 terminal. For example, COT shared UE is mode1UE or mode2UE.

Optionally, the first terminal receiving the SL resource information sent by the third terminal includes: the first terminal receiving the SL resource information on a resource dedicated to a mode 1 terminal or a mode 2 terminal. For example, COT shared UE Receive COT sharing information on resources dedicated to mode1UE or mode2UE.

In the above possible implementation manner, optionally, after receiving the SL resource information sent by the third terminal, the first terminal may re-evaluate (re-evaluate) the first time-frequency resource indicated by the SL resource information. evaluation) or priority preemption (pre-emption) check.

Optionally, before using the first time-frequency resource indicated by the SL resource information, the first terminal evaluates that the first time-frequency resource is available. That is to say, after the first terminal performs re-evaluation or priority preemption check on the first time-frequency resource, it determines that the first time-frequency resource has not been preempted or reserved by other terminals.

In this embodiment of the present application, it may also be determined based on the CAPC value indicated by the SL resource information indicating the first time-frequency resource of the COT shared by the third terminal and the CAPC value used by the first channel access process. How to handle incoming processes. The CAPC value indicated by the SL resource information may be the CAPC value determined by the third terminal before seizing the channel, and the third terminal may seize the channel through the CAPC value to obtain the shared COT.

Therefore, in a possible implementation, in S220, based on the SL resource information, the first terminal performing the target operation may include: when the second CAPC value is greater than or equal to the first CAPC value, and the SL resource information If the indicated first time-frequency resource meets the transmission requirements of the first channel access process (that is, the first time-frequency resource is sufficient to transmit all TBs associated with the first channel access process), the The first terminal executes at least one of the following:

(1) Terminate the first channel access process;

(2) Switch from the first channel access process to the second channel access process at the time-frequency position of the first time-frequency resource indicated by the SL resource information;

(3) Use the shared COT to send the TB associated with the first channel access process; in this possible implementation, the first terminal can terminate the first channel access process and use the shared COT to send the TB associated with the first channel access process. All TBs associated with the first channel access process.

The second CAPC value is the CAPC value indicated by the SL resource information, and the first CAPC value is the CAPC value used by the first channel access process.

Through the above possible implementation, if the first CAPC value is greater than or equal to the first CAPC value, then the maximum occupyable COT length of the channel preempted by the third terminal is greater than or equal to the maximum occupyable COT length of the first channel access process, Since the first time-frequency resource corresponding to the shared COT meets the transmission requirements of the second channel access process, the first channel access process can be terminated and the shared COT is used to save resources.

In the above possible implementation manner, optionally, the time domain position of the first time-frequency resource indicated by the SL resource information is no later than the transmission position of the TB associated with the first channel.

For example, the UE has an ongoing type1 channel access process. The UE receives the SL grant indicated by the COT sharing information (such as COT sharing grant), and determines the time-frequency location of the resource indicated by the COT sharing information. If the CAPC indicated by COT sharing information is greater than or equal to the CAPC used by the ongoing type1 channel access process, and the resources indicated by COT sharing information can satisfy the ongoing type1 channel access process, or can satisfy the ongoing type1 channel access process All TBs associated with the process (can be 1 or more TBs), then The UE performs at least one of the following:

·The UE stops the ongoing type1 channel access process;

·The UE switches from the type 1 channel access process to the type 2 or type 2A channel access process at the time-frequency position of the COT sharing information indication resource;

·The UE uses the shared COT to send one or more TBs associated with the ongoing type1 channel access process;

Optionally, the time domain location of the resource is no later than the SL transmission location associated with the ongoing type 1 channel access process.

Optionally, the COT shared UE evaluates that the resource indicated by the COT sharing information is available, or the COT sharing grant is a valid SL grant.

In the above possible implementation manner, the first time-frequency resource indicated by the optional SL resource information meets the transmission requirements of the first channel access process, including at least one of the following:

(1) When the first terminal needs to send first data to the third terminal, the remaining time-frequency resources after excluding the second time-frequency resource in the first time-frequency resource satisfy the requirement of the third time-frequency resource. Transmission requirements of a channel access process, the second time-frequency resource is the time-frequency resource used to send the first data, wherein the third terminal is a terminal other than the second terminal; for example, UE1 has at least one TB to be sent to UE2 (the TB associated with the ongoing channel access process), and receives the COT share information of UE3. At this time, if UE1 needs to send data to UE3, UE1 uses the COT share information shared by UE3. COT resources are used to send data to UE3. If the shared COT resources are left after sending, UE1 can use the remaining COT to send the data to be sent to UE2. That is to say, in this possible implementation, UE1 uses the COT shared by UE3 to send data related to the ongoing channel access process to UE2.

(2) In the case where the first terminal needs to send second data other than the TB associated with the first channel access process to the second terminal, the third time-frequency resource is removed from the first time-frequency resource. The remaining time-frequency resources meet the transmission requirements of the first channel access process, and the third time-frequency resource is the time-frequency resource used to send the second data, wherein the second data has a high priority. Is equal to or equal to the priority of the TB associated with the first channel access process. That is to say, in this possible implementation, the first terminal uses the COT shared by the second terminal to send data associated with the ongoing channel access process and data associated with the ongoing channel access process to the second terminal. data outside. For example, UE1 has at least one TB (associated with the ongoing channel access process) for UE2 to be sent, and the COT share information of UE2 is received, and UE1 has data associated with the ongoing channel access process that needs to be sent to UE2 still has second data that needs to be sent to UE2, then UE1 uses the COT resources shared by UE2 to send the second data to UE2. If the shared COT resources are left after sending, UE1 can use the remaining COT resources to send to UE2 for processing. Data associated with the channel access process in .

The above-mentioned priority may be CAPC, or it may be layer 1 priority (L1 priority, which may also be called physical layer priority), or it may also be logical channel priority.

For example, the UE has an ongoing type1 channel access process. The UE receives the SL grant indicated by the COT sharing information (such as COT sharing grant), and determines the time-frequency location of the resource indicated by the COT sharing information. If the UE needs to send data to the COT sharing UE, and the CAPC indicated by the COT sharing information is greater than or equal to the CAPC used in the ongoing type1 channel access process, and the data sent to the COT sharing UE is removed from the resources indicated by the COT sharing information. The remaining resources can satisfy the ongoing type1 channel access process, or can satisfy all TBs (which may be 1 or more TBs) associated with the ongoing type1 channel access process, then the UE performs at least one of the following:

·The UE stops the ongoing type1 channel access process;

In another possible implementation, the first terminal can use the COT shared by the third terminal, but does not use it to send data associated with the first channel access process. For example, the cache of the first terminal has data sent to the second terminal. If there is data with a higher priority than the data associated with the first channel access process, the first terminal can fetch the data with a higher priority from the cache and send it to the second terminal. For another example, the shared COT is shared by the third terminal, and the first terminal needs to send data to the third terminal. At this time, the first terminal does not send the TB to UE2. Therefore, in this possible implementation, after the first terminal receives the SL resource information sent by the third terminal, in S220, based on the SL resource information, the first terminal performs a target operation, including: in the The time-frequency position of the first time-frequency resource indicated by the SL resource information partially or fully overlaps with the time-frequency position of the SL transmission associated with the first channel access process, and the first terminal uses the first time-frequency resources, but does not use the first time-frequency resource to send at least one TB associated with the first channel access process, the first terminal performs at least one of the following:

(1) Terminate the first channel access process;

(2) At the time-frequency position of the first time-frequency resource indicated by the SL resource information, switch from the first channel access process to the second channel access process; for example, the UE may be in COT sharing information indicates that the time-frequency location of the resource is switched from the type 1 channel access process to the type 2 or type 2A channel access process.

(3) Perform resource reselection for at least one TB associated with the first channel access process; for example, the UE performs resource reselection for one or more TBs associated with the ongoing type1 channel access process, and the reselection is performed. The type1 channel in accesses 1 or more TB resources associated with the process.

(4) Suspend at least one feedback process associated with the first channel access process; for example, the UE associates one or more hybrid automatic repeat requests (Hybrid automatic repeat request) with the ongoing type1 channel access process. , HARQ) process hangs.

(5) Trigger the transmission resources associated with the first channel access process to perform re-evaluation or priority preemption check. Pass Over-evaluation or priority preemption check determines whether the transmission resources associated with the first channel access process are available.

In the above possible implementation manner, optionally, the first terminal caches data to be sent to the third terminal. That is to say, the cache of the first terminal contains data to be sent to the third terminal. Or, the first terminal needs to reply PSFCH data to the third terminal, that is, the first terminal needs to reply feedback information to the third terminal.

Optionally, the first priority is higher than or equal to the second priority, the first priority is the highest logical channel priority in the cached data to be sent, and the second priority is the first The highest logical channel priority in at least one TB associated with the channel access process.

For example, the priority of the highest priority logical channel of the data in the UE's cache is higher than the priority of the highest priority logical channel in one or more TBs associated with the ongoing type1 channel access process, or the logical channel of the data The associated CAPC priority is higher than the CAPC priority used by the ongoing type1 channel access process.

Optionally, the first terminal uses the first time-frequency resource to send one of the following with the highest target priority: medium access control layer (Medium Access Control, MAC) control element (Control Element, CE); logical channel ; Physical channel; Physical signal; Wherein, the target priority includes one of the following: layer 1 priority, logical channel priority (logical channel priority), and priority corresponding to CAPC. For example, the UE uses the COT sharing information instruction resource to send the MAC CE or logical channel or physical channel or physical signal with the highest priority corresponding to any L1 priority or logical channel priority or CAPC, such as PSFCH/S-SSB, or MAC CE related to sidelink.

Optionally, after the first terminal receives the SL resource information sent by the third terminal, the method may further include: the first terminal evaluates that the time-frequency resource indicated by the SL resource information is available, Alternatively, it is evaluated that the time-frequency resource indicated by the SL resource information is valid. For example, COT shared UE receives COT sharing information and performs re-evaluation or priority preemption check on the resources indicated by COT sharing information. COT shared UE evaluates that the resources indicated by COT sharing information are available. Optional, it can be understood that after COT shared UE re-evaluates or checks the priority of the resources indicated by COT sharing information, it determines that the resources indicated by COT sharing information are not used by other UEs. Preempt or reserve.

In a possible implementation, the first terminal can also use the shared COT to send some TBs associated with the first channel access process. The first terminal has multiple TBs to be sent to the second terminal. The first terminal receives any The COT share information sent by one terminal (which may be a second terminal or a terminal other than the second terminal) uses the COT resource to send part of multiple TBs. For example, although the shared COT cannot meet the needs of the first channel access process, for example, it is not enough to transmit all the TBs associated with the first channel access process, but it can transmit some of the TBs associated with the first channel access process, then the first terminal The shared COT may be used to send part of the TB associated with the first channel access process. Of course, this is not limited to this. In other cases, the first terminal may also use the shared COT to send part of the TB associated with the first channel access process. There are no specific limitations in the embodiments of this application. For example, the UE has an ongoing type1 channel access process, which is associated with the transmission of M TBs or N processes. The UE receives the SL grant indicated by the COT sharing information (such as COT sharing grant) and determines the time-frequency location of the resource indicated by the COT sharing information. The UE can use the resource indicated by the COT sharing information to transmit the type1 channel access process associated with it. Partial terabytes or partial processes. Therefore, in this possible implementation, in the case of receiving the SL resource information sent by the third terminal, in S220, based on the SL resource information, the first terminal performing the target operation may include: in the first situation Next, the first terminal executes at least one of the following:

(1) The first terminal uses the first time-frequency resource indicated by the SL resource information to send m TBs or n processes associated with the first channel access process, where m and n are integers greater than 0; For example, the UE uses the resources indicated by COT sharing information to send m TBs or n processes that can be satisfied by the resources.

(2) The first terminal performs resource reselection on p TBs associated with the first channel access process, and the p TBs are at least one TB associated with the first channel access process except the For TBs other than m TBs, p is an integer greater than 0; for example, the UE performs resource reselection on p TBs, P=M-m; the P TBs are TBs sent without using the resources indicated by the COT sharing information.

(3) The first terminal suspends q processes associated with the first channel access process, and the q TBs are at least one process associated with the first channel access process except the n For processes outside the process, q is an integer greater than 0; for example, the UE suspends q processes, q=N-n; the q processes are processes sent without using the resources indicated by the COT sharing information.

Where, m is less than M, n is less than N, M is the number of TBs associated with the first channel access process, and N is the number of processes associated with the first channel access process.

For example, the first terminal receives the COT shared by the third terminal before the first channel access process, and the first time-frequency resource of the shared COT does not overlap with the resources associated with the first channel access process, then the first terminal can The partial TB associated with the first channel access process is sent from type1 to type2 before the time domain position of the first time-frequency resource of the shared COT. At this time, the first channel access process may be in a suspended state. The UE uses the shared COT to send the part of the TB and then resumes the suspended first channel access process.

For another example, the first terminal receives the COT shared by the third terminal before the first channel access process, and the first time-frequency resources of the shared COT overlap with the resources associated with the first channel access process, if The shared COT is used to transmit part of the TB associated with the first channel access process, and then the first terminal terminates the first channel access process.

In the above possible implementation manner, optionally, the m TBs are not greater than the number of TBs that the first time-frequency resource can transmit.

Optionally, the CAPC value of any one of the m TBs is not greater than the CAPC value indicated by the SL resource information.

Optionally, the CAPC value of any one of the n processes is not greater than the CAPC value indicated by the SL resource information.

Optionally, the first situation includes at least one of the following:

(1) The CAPC value of any one of the M TBs associated with the first channel access process is not greater than the CAPC value indicated by the SL resource information; for example, the CAPC value of any one of the M TBs is not greater than the COT The CAPC value indicated by sharing information;

(2) The CAPC value of at least one TB among the M TBs associated with the first channel access process is not greater than the The CAPC value indicated by the SL resource information; for example, the CAPC value of at least one TB among the M TBs is not greater than the CAPC value indicated by the COT sharing information.

(3) The CAPC value of any one of the N processes associated with the first channel access process is not greater than the CAPC value indicated by the SL resource information; for example, the CAPC value of any one of the N processes is not greater than the COT The CAPC value indicated by sharing information.

(4) The CAPC value of at least one of the N processes associated with the first channel access process is not greater than the CAPC value indicated by the SL resource information; for example, the CAPC value of at least one process among the N processes is not greater than The CAPC value indicated by COT sharing information.

(5) The time domain position of the first time-frequency resource indicated by the SL resource information is no later than the position of the SL transmission associated with the first channel access process. For example, COT sharing information indicates that the time domain location of the resource is no later than the SL transmission location associated with the ongoing type1 channel access process.

Through the above possible implementation methods, the COT shared by the third terminal can be fully utilized to achieve effective utilization of resources and improve resource utilization.

In a possible implementation, in some cases, the first terminal may need to maintain the first channel access process to ensure that the SL transmission between the first terminal and the second terminal proceeds smoothly. Therefore, in a possible implementation, in the case of receiving the SL resource information sent by the third terminal, in S220, based on the SL resource information, the first terminal performing the target operation may include: in the second In this case, the terminal maintains the first channel access process;

Wherein, the second situation includes at least one of the following:

The first terminal evaluates that the first time-frequency resource is unavailable;

The CAPC value indicated by the SL resource information is less than or equal to the CAPC value used by the first channel access process;

The first time-frequency resource cannot satisfy the SL transmission associated with the first channel access process;

The first time-frequency resource cannot meet the transmission requirements of at least one TB associated with the first channel access process;

The time domain position of the first time-frequency resource is later than the transmission position of the SL associated with the first channel access process.

For example, the UE has an ongoing type1 channel access process. The UE receives the SL grant (such as COT sharing grant) indicated by COT sharing information and determines the time-frequency location of the resource indicated by COT sharing information. If at least one of the following conditions is met, the UE maintains the ongoing type1 channel access process:

·The UE evaluates that the resource indicated by the COT sharing information is unavailable;

·The CAPC value indicated by COT sharing information is less than or equal to the CAPC value used by the ongoing type1 channel access process;

·The resources indicated by COT sharing information cannot satisfy the ongoing type1 channel access process, or cannot satisfy one or more TBs associated with the ongoing type1 channel access process;

·COT sharing information indicates that the time domain location of the resource is later than the SL transmission location associated with the ongoing type1 channel access process.

In a possible implementation, the SL resource information may also be resource set information carried in an Inter-UE Coordination (IUC) message sent by the second terminal to indicate that the second terminal does not recommend it. . The resources indicated by the resource set information may overlap with resources associated with the first channel access process. In this case, the first terminal also needs to process the first channel access process. For example, the UE has an ongoing type1 channel access process, and the UE receives an IUC message sent by the peer UE. If the non-preferred resource set resource indicated by the IUC message is related to the ongoing type1 channel access process, overlap, the UE needs to process the ongoing type1 channel access process.

In the above possible implementation manner, in S220, based on the SL resource information, the first terminal performing the target operation may include: connecting the resources in the resource set corresponding to the non-recommended resource set information with the first channel. If the resources associated with the incoming processes overlap, the first terminal performs at least one of the following:

Terminate the first channel access process;

Perform resource reselection for at least one TB associated with the first channel access process;

Suspend at least one feedback process associated with the first channel access process;

Triggering re-evaluation or priority preemption check of the transmission resources associated with the first channel access process;

Perform a target action on listen-before-talk LBT or clear channel assessment CCA at the location where resources are not recommended, and the target action includes one of the following: do not execute, stop, terminate, or pause;

The value of the counter used by LBT remains unchanged at the location of the resource in the resource set that is not recommended, and the counter is a counter adjusted based on channel sensing in the sensing time slot.

For example, the UE has an ongoing type1 channel access process. The UE receives an IUC message sent by the peer UE. If the non-preferred resource set resources indicated by the IUC message overlap with the resources associated with the ongoing type1 channel access process, the UE performs at least one of the following:

·The UE stops the ongoing type1 channel access process;

·The UE performs resource reselection for one or more TBs associated with the ongoing type1 channel access process;

·The UE suspends one or more HARQ processes associated with the ongoing type1 channel access process;

·The UE triggers transmission resource re-evaluation or priority preemption check associated with the ongoing type1 channel access process;

·The UE performs target actions on LBT or CCA (Clear Channel Assessment) at the location of non-preferred resource set resources, and the target actions are "do not execute, stop, terminate" or "pause";

·The UE keeps the value of the counter N used by LBT unchanged at the location of the non-preferred resource set resource. The counter N is a counter based on channel sensing adjustment in the sensing slot.

Through the above possible implementation methods, when the non-preferred resource set resources indicated by the IUC message overlap with the resources associated with the ongoing type1 channel access process, corresponding processing can be performed to ensure the reliability of SL transmission.

For the processing method of the channel access process provided by the embodiment of the present application, the execution subject may be a processing device of the channel access process. In the embodiment of the present application, the processing method of the channel access process executed by the channel access process processing apparatus is used as an example to illustrate the channel access process processing apparatus provided by the embodiment of the present application.

Figure 3 shows a schematic structural diagram of a device for processing a channel access process provided by an embodiment of the present application. As shown in Figure 3, the device 300 mainly includes: an acquisition module 301 and an execution module 302.

In this embodiment of the present application, the acquisition module 301 is configured to acquire SL resource information during the process of executing a first channel access process of the first type, wherein the first channel access process is used to perform the communication with the second channel access process. SL transmission between terminals;

The execution module 302 is configured to execute a target operation based on the SL resource information, where the target operation includes one of the following:

Maintain the first channel access process;

Switch to the second type of second channel access process;

Terminate the first channel access process.

In a possible implementation, the SL resource information is used to indicate SL resources for SL transmission.

In a possible implementation, the obtaining module 301 is prepared to obtain the SL resource information including:

Receive dynamic authorization or configuration authorization sent by the base station, the dynamic authorization or configuration authorization indicating the SL resource; or,

Create a selected secondary link grant indicating the SL resource.

In a possible implementation, the execution module 302 performs target operations, including at least one of the following:

When the first channel access priority CAPC value is greater than or equal to the second CAPC value, transmit the first SL transmission information corresponding to the SL resource through the first channel access process;

If the first CAPC value is less than the second CAPC value, terminate the first channel access process;

Transmit the second SL transmission information corresponding to the SL resource through the first channel access process;

When the first channel access process is used to send the physical secondary link feedback channel PSFCH, and the second CAPC value is greater than or equal to the first threshold, maintain the first channel access process;

When the first channel access process is used to send the physical secondary link feedback channel PSFCH, and the second CAPC value is less than or equal to the second threshold, terminate the first channel access process;

The first CAPC value is the CAPC value used by the first channel access process, and the second CAPC value is the CAPC value indicated by the SL resource information.

In a possible implementation, the obtaining module 301 obtains the SL resource information, including:

Receive the SL resource information sent by a third terminal, wherein the SL resource information is used to indicate a first time-frequency resource of a channel occupancy time COT shared by the third terminal, and the third terminal includes the second terminal or a terminal other than the second terminal.

In a possible implementation, the execution module 302 performs target operations based on the SL resource information, including:

Obtain the first time-frequency resource indicated by the SL resource information, and switch from the first channel access process to the second channel access at one or more time-frequency positions in the first time-frequency resource. process.

In a possible implementation, the SL resource information is also used to indicate at least one of the following:

The device type of the third terminal, wherein the device type includes: a mode 1 terminal or a mode 2 terminal;

Resource type, the resource type includes: Mode 1 resources or Mode 2 resources;

Authorization type, the authorization type includes one of the following: dynamic authorization, configuration authorization, selected secondary link authorization.

In a possible implementation, when the SL transmission scheduled by the SL resource information is PSSCH and/or PSCCH transmission on the first time-frequency resource corresponding to the shared COT, and at least one of the following conditions is met: , the first terminal can regard the first time-frequency resource corresponding to the shared COT as any priority:

The authorization type is dynamic authorization;

The authorization type is configuration authorization;

The resource type is Mode 1 resource;

The device type of the second terminal is a mode 1 terminal;

The device type of the first terminal applied by the device is a mode 1 terminal.

In a possible implementation, the third terminal is a Mode 1 terminal or a Mode 2 terminal; and/or the first terminal is a Mode 1 terminal or a Mode 2 terminal.

In a possible implementation, receiving the SL resource information sent by the third terminal includes: receiving the SL resource information on a resource dedicated to a mode 1 terminal or a mode 2 terminal.

When the second CAPC value is greater than or equal to the first CAPC value, and the first time-frequency resource indicated by the SL resource information meets the transmission requirements of the first channel access process, perform at least one of the following :

Terminate the first channel access process;

Switch from the first channel access process to the second channel access process at the time-frequency position of the first time-frequency resource indicated by the SL resource information;

Use the shared COT to send the TB associated with the first channel access process;

In a possible implementation, the first time-frequency resource indicated by the SL resource information meets the transmission requirements of the first channel access process, including at least one of the following:

When the first terminal needs to send first data to the third terminal, the remaining time-frequency resources after excluding the second time-frequency resources in the first time-frequency resources satisfy the first channel access requirement. According to the transmission requirements of the process, the second time-frequency resource is the time-frequency resource used to send the first data, wherein the third terminal is a terminal other than the second terminal;

In the case where the first terminal needs to send second data other than the TB associated with the first channel access process to the second terminal, the remainder of the first time-frequency resource after excluding the third time-frequency resource The time-frequency resources meet the transmission requirements of the first channel access process, and the third time-frequency resources are time-frequency resources used to send the second data, wherein the priority of the second data is higher than or equal to The priority of the TB associated with the first channel access process.

In a possible implementation, the time domain position of the first time-frequency resource indicated by the SL resource information does not The transmission position of the TB associated with the first channel is later than that of the first channel.

When the time-frequency position of the first time-frequency resource indicated by the SL resource information partially or completely overlaps the time-frequency position of the SL transmission associated with the first channel access process, the first time-frequency is used. resources, but without using the first time-frequency resource to send at least one TB associated with the first channel access process, perform at least one of the following:

Terminate the first channel access process;

Triggering the transmission resource associated with the first channel access process to perform re-evaluation or priority preemption check.

In a possible implementation, the device caches data to be sent to the third terminal, or the first terminal needs to reply PSFCH data to the third terminal.

In a possible implementation, the first priority is higher than or equal to the second priority, the first priority is the highest logical channel priority in the buffered data to be sent, and the second priority is The highest logical channel priority in at least one TB associated with the first channel access process.

In a possible implementation, the execution module 302 is also configured to use the first time-frequency resource to send one of the following with the highest target priority:

Media access control layer MAC control element CE;

logical channel;

physical channel;

physical signal;

Wherein, the target priority includes one of the following: layer 1 priority, logical channel priority, and priority corresponding to CAPC.

In a possible implementation, the execution module 302 is further configured to evaluate that the time-frequency resource indicated by the SL resource information is available, or evaluate that the time-frequency resource indicated by the SL resource information is valid.

In the first case, the first terminal performs at least one of the following:

The first terminal uses the first time-frequency resource indicated by the SL resource information to send m TBs or n processes associated with the first channel access process, where m and n are integers greater than 0;

The first terminal performs resource reselection on p TBs associated with the first channel access process, and the p TBs are at least one TB associated with the first channel access process except the m TBs. Outside TB, p is greater than 0 an integer;

The first terminal suspends q processes associated with the first channel access process, and the q TBs are at least one process associated with the first channel access process except for the n processes. process, q is an integer greater than 0;

In a possible implementation, the m TBs are not greater than the number of TBs that the first time-frequency resource can transmit; and/or

The CAPC value of any one of the m TBs is not greater than the CAPC value indicated by the SL resource information; and/or

The CAPC value of any one of the n processes is not greater than the CAPC value indicated by the SL resource information.

In a possible implementation, the first situation includes at least one of the following:

The CAPC value of any one of the M TBs associated with the first channel access process is not greater than the CAPC value indicated by the SL resource information;

The CAPC value of at least one TB among the M TBs associated with the first channel access process is not greater than the CAPC value indicated by the SL resource information;

The CAPC value of any one of the N processes associated with the first channel access process is not greater than the CAPC value indicated by the SL resource information;

The CAPC value of at least one process among the N processes associated with the first channel access process is not greater than the CAPC value indicated by the SL resource information;

The time domain position of the first time-frequency resource indicated by the SL resource information is no later than the position of the SL transmission associated with the first channel access process.

In the second case, the terminal maintains the first channel access process;

Wherein, the second situation includes at least one of the following:

Evaluate that the first time-frequency resource is unavailable;

In a possible implementation, the obtaining module 301 obtains SL resource information, including:

Receive an inter-terminal collaboration IUC message sent by the second terminal, wherein the IUC message indicates the SL resource information, and the SL resource information includes: resource set information not recommended by the second terminal.

In the case where resources in the resource set corresponding to the non-recommended resource set information overlap with resources associated with the first channel access process, the first terminal performs at least one of the following:

Terminate the first channel access process;

The processing device for the channel access process in the embodiment of the present application may be an electronic device, such as an electronic device with an operating system, or may be a component in the electronic device, such as an integrated circuit or chip. The electronic device may be a terminal or other devices other than the terminal. For example, terminals may include but are not limited to the types of terminals 11 listed above, and other devices may be servers, network attached storage (Network Attached Storage, NAS), etc., which are not specifically limited in the embodiment of this application.

The processing device for the channel access process provided by the embodiment of the present application can implement each process implemented by the method embodiment in Figure 2 and achieve the same technical effect. To avoid duplication, the details will not be described here.

Optionally, as shown in Figure 4, this embodiment of the present application also provides a communication device 400, which includes a processor 401 and a memory 402. The memory 402 stores programs or instructions that can be run on the processor 401, for example. , when the communication device 400 is a terminal, when the program or instruction is executed by the processor 401, each step of the above processing method embodiment of the channel access process is implemented, and the same technical effect can be achieved.

An embodiment of the present application also provides a terminal, which includes a processor and a communication interface. The processor is used to implement each step of the processing method embodiment of the above channel access process, and the communication interface is used to communicate with an external device. This terminal embodiment corresponds to the above-mentioned terminal-side method embodiment. Each implementation process and implementation manner of the above-mentioned method embodiment can be applied to this terminal embodiment, and can achieve the same technical effect. Specifically, FIG. 5 is a schematic diagram of the hardware structure of a terminal that implements an embodiment of the present application.

The terminal 500 includes but is not limited to: a radio frequency unit 501, a network module 502, an audio output unit 503, an input unit 504, a sensor 505, a display unit 506, a user input unit 507, an interface unit 508, a memory 509, a processor 510, etc. At least some parts.

Those skilled in the art can understand that the terminal 500 may also include a power supply (such as a battery) that supplies power to various components. The power supply may be logically connected to the processor 510 through a power management system, thereby managing charging, discharging, and power consumption through the power management system. Management and other functions. The terminal structure shown in FIG. 5 does not constitute a limitation on the terminal. The terminal may include more or fewer components than shown in the figure, or some components may be combined or arranged differently, which will not be described again here.

It should be understood that in the embodiment of the present application, the input unit 504 may include a graphics processing unit (GPU) 5041 and a microphone 5042. The GPU 5041 is suitable for video capture mode or image capture mode. Process the image data of still pictures or videos obtained by an image capture device (such as a camera). The display unit 506 may include a display panel 5061, which may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like. The user input unit 507 includes a touch panel 5071 and at least one of other input devices 5072 . Touch panel 5071, also called touch screen. The touch panel 5071 may include two parts: a touch detection device and a touch controller. Other input devices 5072 may include, but are not limited to, physical keyboards, function keys (such as volume control keys, switch keys, etc.), trackballs, mice, and joysticks, which will not be described again here.

In this embodiment of the present application, after receiving downlink data from the network side device, the radio frequency unit 501 can transmit it to the processor 510 for processing; in addition, the radio frequency unit 501 can send uplink data to the network side device. Generally, the radio frequency unit 501 includes, but is not limited to, an antenna, amplifier, transceiver, coupler, low noise amplifier, duplexer, etc.

Memory 509 may be used to store software programs or instructions as well as various data. The memory 509 may mainly include a first storage area for storing programs or instructions and a second storage area for storing data, wherein the first storage area may store an operating system, an application program or instructions required for at least one function (such as a sound playback function, Image playback function, etc.) etc. Additionally, memory 509 may include volatile memory or non-volatile memory, or memory 509 may include both volatile and non-volatile memory. Among them, the non-volatile memory can be read-only memory (Read-Only 4e4ory, RO4), programmable read-only memory (Progra44able RO4, PRO4), erasable programmable read-only memory (Erasable PRO4, EPRO4), electrically removable memory. Erase programmable read-only memory (Electrically EPRO4, EEPRO4) or flash memory. Volatile memory can be random access memory (Rando4Access 4e4ory, RA4), static random access memory (Static RA4, SRA4), dynamic random access memory (Dyna4ic RA4, DRA4), synchronous dynamic random access memory (Synchronous DRA4 , SDRA4), double data rate synchronous dynamic random access memory (Double Data Rate SDRA4, DDRSDRA4), enhanced synchronous dynamic random access memory (Enhanced SDRA4, ESDRA4), synchronous link dynamic random access memory (Synch link DRA4, SLDRA4) and Direct Memory Bus Random Access Memory (Direct Ra4bus RA4, DRRA4). Memory 509 in embodiments of the present application includes, but is not limited to, these and any other suitable types of memory.

The processor 510 may include one or more processing units; optionally, the processor 510 integrates an application processor and a modem processor, where the application processor mainly handles operations related to the operating system, user interface, application programs, etc., Modem processors mainly process wireless communication signals, such as baseband processors. It can be understood that the above modem processor may not be integrated into the processor 510.

Among them, processor 510 is used for:

Obtaining SL resource information during the execution of a first channel access process of the first type, wherein the first channel access process is used for SL transmission with the second terminal;

Based on the SL resource information, perform a target operation, where the target operation includes one of the following:

Maintain the first channel access process;

Switch to the second type of second channel access process;

Terminate the first channel access process.

In this embodiment of the present application, when the terminal performs the first type of SL transmission with the second terminal, During a channel access process, obtain side link resource information, and based on the side link resource information, maintain the first channel access, switch to a second type of second channel access process, or terminate the first channel Access process, thereby solving the problem of how the UE handles the ongoing channel access process during side link transmission.

Embodiments of the present application also provide a readable storage medium, with a program or instructions stored on the readable storage medium. When the program or instructions are executed by a processor, each process of the processing method embodiment of the above channel access process is implemented. And can achieve the same technical effect. To avoid repetition, they will not be described again here.

Wherein, the processor is the processor in the terminal described in the above embodiment. The readable storage medium includes computer readable storage media, such as computer read-only memory RO4, random access memory RA4, magnetic disk or optical disk, etc.

An embodiment of the present application further provides a chip. The chip includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run programs or instructions to implement the processing of the above channel access process. Each process of the method embodiment can achieve the same technical effect, so to avoid repetition, it will not be described again here.

It should be understood that the chips mentioned in the embodiments of this application may also be called system-on-chip, system-on-a-chip, system-on-chip or system-on-chip, etc.

Embodiments of the present application further provide a computer program/program product. The computer program/program product is stored in a storage medium. The computer program/program product is executed by at least one processor to implement the above channel access process. Each process of the processing method embodiment can achieve the same technical effect, so to avoid repetition, it will not be described again here.

It should be noted that, in this document, the terms "comprising", "comprises" or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article or device that includes a series of elements not only includes those elements, It also includes other elements not expressly listed or inherent in the process, method, article or apparatus. Without further limitation, an element defined by the statement "comprises a..." does not exclude the presence of additional identical elements in a process, method, article or apparatus that includes that element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, but may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved. Functions may be performed, for example, the methods described may be performed in an order different from that described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus the necessary general hardware platform. Of course, it can also be implemented by hardware, but in many cases the former is better. implementation. Based on this understanding, the technical solution of the present application can be embodied in the form of a computer software product that is essentially or contributes to the existing technology. The computer software product is stored in a storage medium (such as RO4/RA4, disk , CD), including several instructions to cause a terminal (which can be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in various embodiments of this application.

The embodiments of the present application have been described above in conjunction with the accompanying drawings. However, the present application is not limited to the above-mentioned specific implementations. The above-mentioned specific implementations are only illustrative and not restrictive. Those of ordinary skill in the art will Inspired by this application, many forms can be made without departing from the purpose of this application and the scope protected by the claims. formulas, all fall within the protection of this application.

Claims

A method for processing a channel access process, including:

The first terminal acquires side link SL resource information during the process of executing a first channel access process of the first type, where the first channel access process is used for SL transmission with the second terminal;

Based on the SL resource information, the first terminal performs a target operation, wherein the target operation includes one of the following:

Maintain the first channel access process;

Switch to the second type of second channel access process;

Terminate the first channel access process.
The method according to claim 1, wherein the SL resource information is used to indicate SL resources for SL transmission.
The method according to claim 2, wherein the first terminal obtaining the SL resource information includes:

The first terminal receives a dynamic authorization or configuration authorization sent by the base station, and the dynamic authorization or configuration authorization indicates the SL resource; or,

The first terminal creates a selected secondary link grant indicating the SL resource.
The method of claim 3, wherein, based on the SL resource information, the first terminal performs a target operation, including at least one of the following:

When the first channel access priority level CAPC value is greater than or equal to the second CAPC value, the first terminal transmits the first SL transmission information corresponding to the SL resource through the first channel access process;

If the first CAPC value is less than the second CAPC value, the first terminal terminates the first channel access process;

The first terminal transmits the second SL transmission information corresponding to the SL resource through the first channel access process;

When the first channel access process is used to send the physical secondary link feedback channel PSFCH, and the second CAPC value is greater than or equal to the first threshold, the first terminal maintains access to the first channel process;

When the first channel access process is used to send the physical secondary link feedback channel PSFCH, and the second CAPC value is less than or equal to the second threshold, the first terminal terminates the first channel access. process;

The first CAPC value is the CAPC value used by the first channel access process, and the second CAPC value is the CAPC value indicated by the SL resource information.
The method according to claim 2, wherein the first terminal obtains the SL resource information, including:

The first terminal receives the SL resource information sent by the third terminal, wherein the SL resource information is used to indicate the first time-frequency resource of the channel occupancy time COT shared by the third terminal, and the third terminal Including the second terminal or a terminal other than the second terminal.
The method of claim 5, wherein based on the SL resource information, the first terminal performs a target operation, including:

The first terminal obtains the first time-frequency resource indicated by the SL resource information, and the first time-frequency resource in the first time-frequency resource Switch from the first channel access process to the second channel access process at one or more time-frequency positions.
The method according to claim 5, wherein the SL resource information is also used to indicate at least one of the following:

The device type of the third terminal, wherein the device type includes: a mode 1 terminal or a mode 2 terminal;

Resource type, the resource type includes: Mode 1 resources or Mode 2 resources;

Authorization type, the authorization type includes one of the following: dynamic authorization, configuration authorization, selected secondary link authorization.
The method according to claim 7, wherein when the SL transmission scheduled by the SL resource information is PSSCH and/or PSCCH transmission on the first time-frequency resource, and at least one of the following is satisfied, the The first terminal considers the first time-frequency resource to be of any priority:

The authorization type is dynamic authorization;

The authorization type is configuration authorization;

The resource type is Mode 1 resource;

The device type of the second terminal is a mode 1 terminal;

The equipment type of the first terminal is a mode 1 terminal.
The method of claim 6, wherein

The third terminal is a mode 1 terminal or a mode 2 terminal; and/or,

The first terminal is a mode 1 terminal or a mode 2 terminal.
The method according to claim 9, wherein the first terminal receiving the SL resource information sent by the third terminal includes:

The first terminal receives the SL resource information on a resource dedicated to a mode 1 terminal or a mode 2 terminal.
The method of claim 5, wherein based on the SL resource information, the first terminal performs a target operation, including:

When the second CAPC value is greater than or equal to the first CAPC value, and the first time-frequency resource indicated by the SL resource information meets the transmission requirements of the first channel access process, the first terminal Do at least one of the following:

Terminate the first channel access process;

Switch from the first channel access process to the second channel access process at the time-frequency position of the first time-frequency resource indicated by the SL resource information;

Send the transport block TB associated with the first channel access process using the shared COT;

The second CAPC value is the CAPC value indicated by the SL resource information, and the first CAPC value is the CAPC value used by the first channel access process.
The method according to claim 11, wherein the first time-frequency resource indicated by the SL resource information meets the transmission requirements of the first channel access process, including at least one of the following:

When the first terminal needs to send first data to the third terminal, the remaining time-frequency resources after excluding the second time-frequency resources in the first time-frequency resources satisfy the first channel access requirement. According to the transmission requirements of the process, the second time-frequency resource is the time-frequency resource used to send the first data, wherein the third terminal is a terminal other than the second terminal;

In the case where the first terminal needs to send second data other than the TB associated with the first channel access process to the second terminal, the remainder of the first time-frequency resource after excluding the third time-frequency resource The time-frequency resources meet the transmission requirements of the first channel access process, and the third time-frequency resources are time-frequency resources used to send the second data, wherein the priority of the second data is higher than or equal to The priority of the TB associated with the first channel access process.
The method according to claim 11 or 12, wherein the time domain position of the first time-frequency resource indicated by the SL resource information is no later than the transmission position of the TB associated with the first channel.
The method of claim 5, wherein based on the SL resource information, the first terminal performs a target operation, including:

When the time-frequency position of the first time-frequency resource indicated by the SL resource information partially or fully overlaps with the time-frequency position of the SL transmission associated with the first channel access process, the first terminal uses When using the first time-frequency resource but not using the first time-frequency resource to send at least one TB associated with the first channel access process, the first terminal performs at least one of the following:

Terminate the first channel access process;

Switch from the first channel access process to the second channel access process at the time-frequency position of the first time-frequency resource indicated by the SL resource information;

Perform resource reselection for at least one TB associated with the first channel access process;

Suspend at least one feedback process associated with the first channel access process;

Triggering the transmission resource associated with the first channel access process to perform re-evaluation or priority preemption check.
The method according to claim 14, wherein the first terminal caches data to be sent to the third terminal, or the first terminal needs to reply PSFCH data to the third terminal.
The method according to claim 15, wherein the first priority is higher than or equal to the second priority, the first priority is the highest logical channel priority in the buffered data to be sent, and the second priority is the highest logical channel priority in the buffered data to be sent. The priority is the highest logical channel priority in at least one TB associated with the first channel access process.
The method of claim 14, wherein the method further includes:

The first terminal uses the first time-frequency resource to send one of the following with the highest target priority:

Media access control layer MAC control element CE;

logical channel;

physical channel;

physical signal;

Wherein, the target priority includes one of the following: layer 1 priority, logical channel priority, and priority corresponding to CAPC.
The method according to any one of claims 6, 11 and 14, wherein after the first terminal receives the SL resource information sent by the third terminal, the method further includes:

The first terminal evaluates that the time-frequency resource indicated by the SL resource information is available, or evaluates that the time-frequency resource indicated by the SL resource information is valid.
The method of claim 5, wherein based on the SL resource information, the first terminal performs a target operation, including:

In the first case, the first terminal performs at least one of the following:

The first terminal uses the first time-frequency resource indicated by the SL resource information to send m TBs or n processes associated with the first channel access process, where m and n are integers greater than 0;

The first terminal performs resource reselection on p TBs associated with the first channel access process, and the p TBs are at least one TB associated with the first channel access process except the m TBs. For TB other than TB, p is an integer greater than 0;

The first terminal suspends q processes associated with the first channel access process, and the q TBs are at least one process associated with the first channel access process except for the n processes. process, q is an integer greater than 0;

Where, m is less than M, n is less than N, M is the number of TBs associated with the first channel access process, and N is the number of processes associated with the first channel access process.
The method of claim 19, wherein:

The m TBs are not greater than the number of TBs that the first time-frequency resource can transmit; and/or

The CAPC value of any one of the m TBs is not greater than the CAPC value indicated by the SL resource information; and/or

The CAPC value of any one of the n processes is not greater than the CAPC value indicated by the SL resource information.
The method of claim 19, wherein the first situation includes at least one of the following:

The CAPC value of any one of the M TBs associated with the first channel access process is not greater than the CAPC value indicated by the SL resource information;

The CAPC value of at least one TB among the M TBs associated with the first channel access process is not greater than the CAPC value indicated by the SL resource information;

The CAPC value of any one of the N processes associated with the first channel access process is not greater than the CAPC value indicated by the SL resource information;

The CAPC value of at least one process among the N processes associated with the first channel access process is not greater than the CAPC value indicated by the SL resource information;

The time domain position of the first time-frequency resource indicated by the SL resource information is no later than the position of the SL transmission associated with the first channel access process.
The method of claim 5, wherein based on the SL resource information, the first terminal performs a target operation, including:

In the second case, the terminal maintains the first channel access process;

Wherein, the second situation includes at least one of the following:

The first terminal evaluates that the first time-frequency resource is unavailable;

The CAPC value indicated by the SL resource information is less than or equal to the CAPC value used by the first channel access process;

The first time-frequency resource cannot satisfy the SL transmission associated with the first channel access process;

The first time-frequency resource cannot meet the transmission requirements of at least one TB associated with the first channel access process;

The time domain position of the first time-frequency resource is later than the transmission position of the SL associated with the first channel access process.
The method according to claim 1, wherein the first terminal obtains SL resource information, including:

The first terminal receives an inter-terminal collaboration IUC message sent by the second terminal, wherein the IUC message indicates the SL resource information, and the SL resource information includes: resource set information not recommended by the second terminal.
The method of claim 23, wherein based on the SL resource information, the first terminal performs a target operation, including:

In the case where resources in the resource set corresponding to the non-recommended resource set information overlap with resources associated with the first channel access process, the first terminal performs at least one of the following:

Terminate the first channel access process;

Perform resource reselection for at least one TB associated with the first channel access process;

Suspend at least one feedback process associated with the first channel access process;

Triggering re-evaluation or priority preemption check of the transmission resources associated with the first channel access process;

Perform a target action on listen-before-talk LBT or clear channel assessment CCA at the location where resources are not recommended, and the target action includes one of the following: do not execute, stop, terminate, or pause;

The value of the counter used by LBT remains unchanged at the location of the resource in the resource set that is not recommended, and the counter is a counter adjusted based on channel sensing in the sensing time slot.
A processing device for a channel access process, including:

An acquisition module configured to acquire SL resource information during the execution of a first type of first channel access process, wherein the first channel access process is used for SL transmission with the second terminal;

An execution module, configured to execute a target operation based on the SL resource information, where the target operation includes one of the following:

Maintain the first channel access process;

Switch to the second type of second channel access process;

Terminate the first channel access process.
The device according to claim 25, wherein the SL resource information is used to indicate SL resources for SL transmission, and the obtaining module is configured to obtain the SL resource information including:

Receive dynamic authorization or configuration authorization sent by the base station, the dynamic authorization or configuration authorization indicating the SL resource; or,

Create a selected secondary link grant indicating the SL resource.
The apparatus according to claim 26, wherein the execution module performs a target operation, including at least one of the following:

When the first channel access priority CAPC value is greater than or equal to the second CAPC value, transmit the first SL transmission information corresponding to the SL resource through the first channel access process;

If the first CAPC value is less than the second CAPC value, terminate the first channel access process;

Transmit the second SL transmission information corresponding to the SL resource through the first channel access process;

When the first channel access process is used to send the physical secondary link feedback channel PSFCH, and the second CAPC value is greater than or equal to the first threshold, maintain the first channel access process;

When the first channel access process is used to send the physical secondary link feedback channel PSFCH, and the second CAPC value is less than or equal to the second threshold, terminate the first channel access process;

The first CAPC value is the CAPC value used by the first channel access process, and the second CAPC value is the CAPC value indicated by the SL resource information.
The device according to claim 25, wherein the obtaining module obtains the SL resource information, including:

Receive the SL resource information sent by a third terminal, wherein the SL resource information is used to indicate a first time-frequency resource of a channel occupancy time COT shared by the third terminal, and the third terminal includes the second terminal or a terminal other than the second terminal.
The apparatus according to claim 28, wherein the execution module performs a target operation based on the SL resource information, including:

Obtain the first time-frequency resource indicated by the SL resource information, and switch from the first channel access process to the second channel access at one or more time-frequency positions in the first time-frequency resource. process.
The apparatus according to claim 28, wherein the execution module performs a target operation based on the SL resource information, including:

When the second CAPC value is greater than or equal to the first CAPC value, and the first time-frequency resource indicated by the SL resource information meets the transmission requirements of the first channel access process, perform at least one of the following :

Terminate the first channel access process;

Switch from the first channel access process to the second channel access process at the time-frequency position of the first time-frequency resource indicated by the SL resource information;

Use the shared COT to send the TB associated with the first channel access process;

The second CAPC value is the CAPC value indicated by the SL resource information, and the first CAPC value is the CAPC value used by the first channel access process.
The apparatus according to claim 28, wherein the execution module performs a target operation based on the SL resource information, including:

When the time-frequency position of the first time-frequency resource indicated by the SL resource information partially or completely overlaps the time-frequency position of the SL transmission associated with the first channel access process, the first time-frequency is used. resources, but without using the first time-frequency resource to send at least one TB associated with the first channel access process, perform at least one of the following:

Terminate the first channel access process;

Switch from the first channel access process to the second channel access process at the time-frequency position of the first time-frequency resource indicated by the SL resource information;

Perform resource reselection for at least one TB associated with the first channel access process;

Suspend at least one feedback process associated with the first channel access process;

Triggering the transmission resource associated with the first channel access process to perform re-evaluation or priority preemption check.
The apparatus according to claim 28, wherein the execution module performs a target operation based on the SL resource information, including:

In the first case, the first terminal performs at least one of the following:

The first terminal uses the first time-frequency resource indicated by the SL resource information to send m TBs or n processes associated with the first channel access process, where m and n are integers greater than 0;

The first terminal performs resource reselection on p TBs associated with the first channel access process, and the p TBs are at least one TB associated with the first channel access process except the m TBs. For TB other than TB, p is an integer greater than 0;

The first terminal suspends q processes associated with the first channel access process, and the q TBs are at least one process associated with the first channel access process except for the n processes. process, q is an integer greater than 0;

Where, m is less than M, n is less than N, M is the number of TBs associated with the first channel access process, and N is the number of processes associated with the first channel access process.
The apparatus according to claim 28, wherein the execution module performs a target operation based on the SL resource information, including:

In the second case, the terminal maintains the first channel access process;

Wherein, the second situation includes at least one of the following:

Evaluate that the first time-frequency resource is unavailable;

The CAPC value indicated by the SL resource information is less than or equal to the CAPC value used by the first channel access process;

The first time-frequency resource cannot satisfy the SL transmission associated with the first channel access process;

The first time-frequency resource cannot meet the transmission requirements of at least one TB associated with the first channel access process;

The time domain position of the first time-frequency resource is later than the transmission position of the SL associated with the first channel access process.
The device according to claim 25, wherein the obtaining module obtains SL resource information, including:

Receive an inter-terminal collaboration IUC message sent by the second terminal, wherein the IUC message indicates the SL resource information, and the SL resource information includes: resource set information not recommended by the second terminal.
The apparatus according to claim 34, wherein the execution module performs a target operation based on the SL resource information, including:

In the case where resources in the resource set corresponding to the non-recommended resource set information overlap with resources associated with the first channel access process, the first terminal performs at least one of the following:

Terminate the first channel access process;

Perform resource reselection for at least one TB associated with the first channel access process;

Suspend at least one feedback process associated with the first channel access process;

Triggering re-evaluation or priority preemption check of the transmission resources associated with the first channel access process;

Perform a target action on listen-before-talk LBT or clear channel assessment CCA at the location where resources are not recommended, and the target action includes one of the following: do not execute, stop, terminate, or pause;

The value of the counter used by LBT remains unchanged at the location of the resource in the resource set that is not recommended, and the counter is a counter adjusted based on channel sensing in the sensing time slot.
A terminal, including a processor and a memory, the memory stores programs or instructions that can be run on the processor, and when the programs or instructions are executed by the processor, the implementation of any one of claims 1 to 24 is achieved. The steps of the processing method of the channel access process described above.
A readable storage medium on which programs or instructions are stored. When the programs or instructions are executed by a processor, the processing method of the channel access process according to any one of claims 1 to 24 is implemented. step.