Wireless communication method and terminal equipment

Abstract

The embodiment of the invention provides a wireless communication method and terminal equipment, when the terminal equipment acquires N pieces of COT shared information, target COT shared information can be determined from the N pieces of COT shared information, and channel access is carried out based on parameters corresponding to the target COT shared information. The wireless communication method comprises: a terminal device obtaining N pieces of channel occupancy time (COT) shared information, N being a positive integer; the terminal equipment determines target COT sharing information from the N pieces of COT sharing information; and the terminal equipment performs channel access according to parameters corresponding to the target COT shared information.

Description

[0001] This application claims priority to PCT patent application filed on November 15, 2021, with application number PCT / CN2021 / 130683, entitled "Method and Terminal Apparatus for Wireless Communication", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of communications, and more specifically, to a method and terminal device for wireless communication. Background Technology

[0003] When a side-pass transmission system operates on unlicensed spectrum, the terminal device must also meet the transmission requirements of the unlicensed spectrum before initiating side-pass transmission. This can be achieved by using a Listen Before Talk (LBT) method to determine if channel access is possible. The terminal device listens for channel availability; if available, side-pass transmission is possible; otherwise, it is not. When the terminal device uses Type 1 channel access and determines the channel is available, it can preempt the channel for side-pass transmission and share its Channel Occupancy Time (COT) with other terminals to assist them in accessing the channel. However, how to use the received COT information to access the channel when a terminal receives multiple shared COT messages is a problem that urgently needs to be solved. Summary of the Invention

[0004] This application provides a wireless communication method and a terminal device. When the terminal device acquires N COT shared information, it can determine the target COT shared information from the N COT shared information and perform channel access based on the parameters corresponding to the target COT shared information.

[0005] In a first aspect, a wireless communication method is provided, the method comprising: a terminal device acquiring N Channel Occupancy Time (COT) sharing information, where N is a positive integer; the terminal device determining a target COT sharing information from the N COT sharing information; and the terminal device accessing the channel according to the parameters corresponding to the target COT sharing information.

[0006] Secondly, a terminal device is provided for performing the method described in the first aspect above.

[0007] Specifically, the terminal device includes a functional module for performing the method described in the first aspect above.

[0008] Thirdly, a terminal device is provided, including a processor and a memory; the memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to perform the method described in the first aspect.

[0009] Fourthly, an apparatus is provided for implementing the method in the first aspect described above.

[0010] Specifically, the device includes a processor for retrieving and running a computer program from memory, causing a device equipped with the device to perform the method described in the first aspect above.

[0011] Fifthly, a computer-readable storage medium is provided for storing a computer program that causes a computer to perform the methods described in the first aspect above.

[0012] In a sixth aspect, a computer program product is provided, including computer program instructions that cause a computer to perform the method described in the first aspect.

[0013] In a seventh aspect, a computer program is provided that, when run on a computer, causes the computer to perform the method described in the first aspect above.

[0014] With the above technical solution, when the terminal device acquires N COT shared information, it can determine the target COT shared information from the N COT shared information and perform channel access based on the parameters corresponding to the target COT shared information. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of a communication system architecture used in an embodiment of this application.

[0016] Figure 2 This is a schematic diagram of another communication system architecture applied in the embodiments of this application.

[0017] Figure 3 This is a schematic diagram of side-to-side communication within the network coverage area provided in this application.

[0018] Figure 4 This is a schematic diagram of a partial network coverage side-by-side communication provided in this application.

[0019] Figure 5 This is a schematic diagram of outgoing network communication provided in this application.

[0020] Figure 6 This is a schematic diagram of a side-by-side communication system with a central control node provided in this application.

[0021] Figure 7This is a schematic diagram of a unicast side-by-side communication method provided in this application.

[0022] Figure 8 This is a schematic diagram of a multicast side-by-side communication method provided in this application.

[0023] Figure 9 This is a schematic diagram of a broadcast side-by-side communication method provided in this application.

[0024] Figure 10 This is a schematic diagram of a frame structure for an NR-V2X system provided in this application.

[0025] Figure 11 This is a schematic flowchart of a wireless communication method provided according to an embodiment of this application.

[0026] Figure 12 This is a schematic diagram of the remaining COT time corresponding to COT shared information provided in the embodiments of this application.

[0027] Figure 13 This is a schematic diagram of the remaining COT duration corresponding to another COT sharing information provided in the embodiments of this application.

[0028] Figure 14 This is a schematic diagram of the remaining COT duration corresponding to another type of COT shared information provided in the embodiments of this application.

[0029] Figure 15 This is a schematic block diagram of a terminal device provided according to an embodiment of this application.

[0030] Figure 16 This is a schematic block diagram of a communication device provided according to an embodiment of this application.

[0031] Figure 17 This is a schematic block diagram of an apparatus provided according to an embodiment of this application.

[0032] Figure 18 This is a schematic block diagram of a communication system provided according to an embodiment of this application. Detailed Implementation

[0033] The technical solutions of the embodiments of this application will now be described with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art without creative effort regarding the embodiments of this application are within the scope of protection of this application.

[0034] The technical solutions of this application embodiment can be applied to various communication systems, such as: Global System of Mobile communication (GSM) system, Code Division Multiple Access (CDMA) system, Wideband Code Division Multiple Access (WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, Advanced Long Term Evolution (LTE-A) system, New Radio (NR) system, evolution of NR system, LTE-based access to unlicensed spectrum (LTE-U) system, Sidelink (SL) system, NR-based access to unlicensed spectrum (NR-U) system, SL-based access to unlicensed spectrum (SL-U) system, Non-Terrestrial Networks (NTN) system, and Universal Mobile Telecommunication System (UMT). Systems such as UMTS, Wireless Local Area Networks (WLAN), Internet of Things (IoT), Wireless Fidelity (WiFi), 5th Generation (5G) systems, or other communication systems.

[0035] Traditional communication systems typically support a limited number of connections and are easy to implement. However, with the development of communication technology, mobile communication systems will not only support traditional communication but also, for example, device-to-device (D2D) communication, machine-to-machine (M2M) communication, machine-type communication (MTC), vehicle-to-vehicle (V2V) communication, or vehicle-to-everything (V2X) communication. The embodiments of this application can also be applied to these communication systems.

[0036] Optionally, the communication system in this application embodiment can be applied to carrier aggregation (CA) scenarios, dual connectivity (DC) scenarios, or standalone (SA) network deployment scenarios.

[0037] Optionally, the communication system in this application embodiment can be applied to unlicensed spectrum, wherein unlicensed spectrum can also be considered as shared spectrum; or, the communication system in this application embodiment can also be applied to licensed spectrum, wherein licensed spectrum can also be considered as non-shared spectrum.

[0038] This application describes various embodiments in conjunction with network devices and terminal devices. The terminal device may also be referred to as user equipment (UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent, or user device, etc.

[0039] Terminal devices can be stations (STs) in WLANs, cellular phones, cordless phones, Session Initiation Protocol (SIP) phones, Wireless Local Loop (WLL) stations, Personal Digital Assistant (PDA) devices, handheld devices with wireless communication capabilities, computing devices or other processing devices connected to a wireless modem, in-vehicle devices, wearable devices, terminal devices in next-generation communication systems such as NR networks, or terminal devices in future evolved Public Land Mobile Network (PLMN) networks, etc.

[0040] In the embodiments of this application, the terminal device can be deployed on land, including indoor or outdoor, handheld, wearable or vehicle-mounted; it can also be deployed on water (such as ships); and it can also be deployed in the air (such as airplanes, balloons and satellites).

[0041] In the embodiments of this application, the terminal device may be a mobile phone, a tablet computer, a computer with wireless transceiver capabilities, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in self-driving, a wireless terminal device in remote medical care, a wireless terminal device in a smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city, a wireless terminal device in a smart home, an in-vehicle communication device, a wireless communication chip / application-specific integrated circuit (ASIC) / system-on-chip (SoC), etc.

[0042] By way of example and not limitation, in this embodiment, the terminal device can also be a wearable device. Wearable devices, also known as wearable smart devices, are a general term for devices that utilize wearable technology to intelligently design and develop everyday wearables, such as glasses, gloves, watches, clothing, and shoes. Wearable devices are portable devices that are worn directly on the body or integrated into the user's clothing or accessories. Wearable devices are not merely hardware devices, but also achieve powerful functions through software support, data interaction, and cloud interaction. Broadly speaking, wearable smart devices include those that are feature-rich, large in size, and can achieve complete or partial functions without relying on a smartphone, such as smartwatches or smart glasses, as well as those that focus on a specific type of application function and require the use of other devices such as smartphones, such as various smart bracelets and smart jewelry for vital sign monitoring.

[0043] In the embodiments of this application, the network device can be a device for communicating with mobile devices. The network device can be an access point (AP) in WLAN, a base station (BTS) in GSM or CDMA, a base station (NodeB, NB) in WCDMA, an evolved base station (eNB or eNodeB) in LTE, a relay station or access point, or a network device or base station (gNB) in an in-vehicle device, wearable device, or NR network, or a network device in a future evolved PLMN network or NTN network, etc.

[0044] By way of example and not limitation, in this embodiment, the network device may have mobility characteristics; for example, the network device may be a mobile device. Optionally, the network device may be a satellite or a balloon station. For example, the satellite may be a low Earth orbit (LEO) satellite, a medium Earth orbit (MEO) satellite, a geostationary earth orbit (GEO) satellite, a high elliptical orbit (HEO) satellite, etc. Optionally, the network device may also be a base station located on land, water, or other similar locations.

[0045] In this embodiment, the network device can provide services to a cell. The terminal device communicates with the network device through the transmission resources (e.g., frequency domain resources, or spectrum resources) used by the cell. The cell can be the cell corresponding to the network device (e.g., a base station). The cell can belong to a macro base station or to a base station corresponding to a small cell. The small cell can include: metro cell, micro cell, pico cell, femto cell, etc. These small cells have the characteristics of small coverage area and low transmission power, and are suitable for providing high-speed data transmission services.

[0046] It should be understood that the terms "system" and "network" are often used interchangeably in this document. The term "and / or" in this document merely describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. Furthermore, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0047] The terminology used in the embodiments section of this application is for the purpose of explaining specific embodiments of this application only, and is not intended to limit this application. The terms "first," "second," "third," and "fourth," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0048] It should be understood that the term "instruction" mentioned in the embodiments of this application can be a direct instruction, an indirect instruction, or an indication of a relationship. For example, A instructing B can mean that A directly instructs B, such as B being able to obtain information through A; it can also mean that A indirectly instructs B, such as A instructing C, so B can obtain information through C; or it can mean that there is a relationship between A and B.

[0049] In the description of the embodiments of this application, the term "correspondence" may indicate that there is a direct or indirect correspondence between two things, or that there is an association between two things, or that there is a relationship of instruction and being instructed, configuration and being configured, etc.

[0050] In this application embodiment, "predefined" or "preconfigured" can be implemented by pre-storing corresponding codes, tables, or other means that can be used to indicate relevant information in the device (e.g., including terminal devices and network devices). This application does not limit the specific implementation method. For example, predefined can refer to what is defined in the protocol.

[0051] In this application embodiment, the "protocol" may refer to a standard protocol in the field of communication, such as the LTE protocol, the NR protocol, and related protocols applied to future communication systems. This application does not limit this.

[0052] To facilitate understanding of the technical solutions of the embodiments of this application, the technical solutions of this application are described in detail below through specific embodiments. The following related technologies are optional solutions and can be arbitrarily combined with the technical solutions of the embodiments of this application, all of which fall within the protection scope of the embodiments of this application. The embodiments of this application include at least some of the following contents.

[0053] Figure 1 This is a schematic diagram of a communication system applicable to an embodiment of this application. The transmission resources of the vehicle-mounted terminals (vehicle-mounted terminal 121 and vehicle-mounted terminal 122) are allocated by the base station 110, and the vehicle-mounted terminals transmit data on the side link according to the resources allocated by the base station 110. Specifically, the base station 110 can allocate resources for single transmission or semi-static transmission for the terminals.

[0054] Figure 2This is a schematic diagram of another communication system applicable to the embodiments of this application. The vehicle-mounted terminals (vehicle-mounted terminal 131 and vehicle-mounted terminal 132) autonomously select transmission resources on the side link for data transmission. Optionally, the vehicle-mounted terminals may randomly select transmission resources or select transmission resources by listening.

[0055] It should be noted that in side-line communication, depending on the network coverage of the communicating terminal, it can be divided into side-line communication within network coverage, such as... Figure 3 As shown; partial network coverage side-by-side communication, such as Figure 4 As shown; and network coverage outside the line of communication, such as Figure 5 As shown.

[0056] Figure 3 In side-line communication within network coverage, all terminals conducting side-line communication are within the coverage area of ​​the base station. Therefore, all of these terminals can conduct side-line communication based on the same side-line configuration by receiving configuration signaling from the base station.

[0057] Figure 4 In partial network coverage sidelink communication scenarios, some terminals performing sidelink communication are located within the base station's coverage area. These terminals can receive configuration signaling from the base station and perform sidelink communication according to the base station's configuration. Terminals located outside the network coverage area cannot receive the base station's configuration signaling. In this case, terminals outside the network coverage area will determine their sidelink configuration and perform sidelink communication based on pre-configuration information and information carried in the Physical Sidelink Broadcast Channel (PSBCH) sent by terminals within the network coverage area.

[0058] Figure 5 For out-of-network coverage communication, all terminals conducting out-of-network communication are located outside the network coverage area, and all terminals determine their out-of-network configuration based on pre-configuration information for out-of-network communication.

[0059] Figure 6 For side-by-side communication with a central control node, multiple terminals form a communication group. This communication group has a central control node, also known as the cluster head (CH). The central control node has one of the following functions: responsible for establishing the communication group; joining and leaving the group members; coordinating resources, allocating side-by-side transmission resources to other terminals, receiving side-by-side feedback information from other terminals, and coordinating resources with other communication groups.

[0060] It should be noted that device-to-device communication is a sidelink (SL) transmission technology based on device-to-device (D2D). Unlike traditional cellular systems where communication data is received or transmitted through base stations, vehicular networks use direct terminal-to-terminal communication, thus offering higher spectral efficiency and lower transmission latency. 3GPP defines two transmission modes, denoted as: mode 1 (sidelink resource allocation mode 1) and mode 2 (sidelink resource allocation mode 2).

[0061] In the first mode, the terminal's transmission resources are allocated by the base station, and the terminal transmits data on the side link according to the resources allocated by the base station. The base station can allocate resources for a single transmission or for semi-static transmission. For example... Figure 3 As shown, the terminal is located within the network coverage area, and the network allocates transmission resources for the terminal to use for side-by-side transmission.

[0062] Second mode: The terminal selects a resource from the resource pool for data transmission. For example... Figure 5 As shown, if the terminal is located outside the cell coverage area, the terminal autonomously selects transmission resources from the pre-configured resource pool for sideline transmission; or, as... Figure 3 As shown, the terminal autonomously selects transmission resources from the resource pool configured in the network for side-line transmission.

[0063] In New Radio - Vehicle to Everything (NR-V2X), autonomous driving is supported, which places higher demands on data interaction between vehicles, such as higher throughput, lower latency, higher reliability, wider coverage, and more flexible resource allocation.

[0064] LTE-V2X supports broadcast transmission, while NR-V2X introduces unicast and multicast transmission methods. For unicast transmission, there is only one receiving terminal, such as... Figure 7 As shown, UE1 and UE2 communicate via unicast; for multicast transmission, the receiving end is all terminals within a communication group, or all terminals within a certain transmission distance, such as... Figure 8 As shown, UE1, UE2, UE3, and UE4 form a communication group, where UE1 transmits data, and the other terminal devices in the group are all receiving terminals. For broadcast transmission, the receiving terminal is any terminal surrounding the transmitting terminal, such as... Figure 9As shown, UE1 is the sending terminal, and the other terminals around it, UE2-UE6, are all receiving terminals.

[0065] To facilitate a better understanding of the embodiments of this application, the NR-V2X system frame structure related to this application will be described.

[0066] Time slot structure in NR-V2X Figure 10 As shown, Figure 10 In the table, (a) indicates a time slot structure that does not include the Physical Sidelink Feedback Channel (PSFCH); Figure 10 Figure (b) shows the time slot structure including PSFCH.

[0067] In NR-V2X, the Physical Sidelink Control Channel (PSCCH) occupies 2 or 3 Orthogonal Frequency-Division Multiplexing (OFDM) symbols in the time domain, starting from the second sidelink symbol of the time slot. In the frequency domain, it can occupy {10, 12, 15, 20, 25} physical resource blocks (PRBs). To reduce the complexity of blind detection of the PSCCH by the UE, only one number of PSCCH symbols and PRBs can be configured within a resource pool. Furthermore, because the sub-channel is the smallest granularity for resource allocation in NR-V2X's Physical Sidelink Shared Channel (PSSCH), the number of PRBs occupied by the PSCCH must be less than or equal to the number of PRBs contained in a sub-channel within the resource pool, to avoid imposing additional restrictions on PSSCH resource selection or allocation. In the time domain, PSSCH also begins with the second sideline symbol of the time slot. The last time-domain symbol in this time slot is the Guard Period (GP) symbol, and the remaining symbols map to PSSCH. The first sideline symbol in this time slot is a repetition of the second sideline symbol. Typically, the receiving terminal uses the first sideline symbol as an Auto Gain Control (AGC) symbol, and the data on this symbol is usually not used for demodulation. PSSCH occupies M sub-channels in the frequency domain, and each sub-channel includes N consecutive PRBs. For example... Figure 10 As shown in (a) of the diagram.

[0068] When a time slot contains a PSFCH channel, the second-to-last and third-to-last symbols in that time slot are used for PSFCH channel transmission, and the data on the third-to-last symbol is a repetition of the data on the second-to-last symbol. The time-domain symbol preceding the PSFCH channel is used as the GP symbol, such as... Figure 10 As shown in (b) of the diagram.

[0069] To facilitate a better understanding of the embodiments of this application, the unauthorized spectrum related to this application is described.

[0070] Unlicensed spectrum is spectrum allocated by a country or region for use in wireless communication. This spectrum is usually considered a shared spectrum, meaning that communication equipment in different communication systems can use the spectrum as long as it meets the requirements set by the country or region, without needing to apply for a proprietary spectrum license from the government.

[0071] To ensure the amicable coexistence of various communication systems using unlicensed spectrum, some countries or regions have stipulated requirements for using unlicensed spectrum. For example, communication devices must adhere to the "LBT" principle: before transmitting signals on an unlicensed spectrum channel, the device must first perform channel listening. Transmission is only permitted if the channel listening result indicates the channel is idle; otherwise, transmission is prohibited. To guarantee fairness, the duration of signal transmission using an unlicensed spectrum channel in a single transmission cannot exceed the Maximum Channel Occupancy Time (MCOT).

[0072] Signal transmission in unlicensed spectrum includes the following basic concepts: Maximum Channel Occupancy Time (MCOT): This refers to the maximum duration for which signal transmission using unlicensed spectrum channels is permitted after a successful LBT (Landing Bypass). Different channel access priorities have different MCOT values. Currently, the maximum MCOT value is 10ms. It should be understood that this MCOT represents the time occupied by signal transmission.

[0073] Channel Occupancy Time (COT): This refers to the length of time after a successful LBT (Landing Bypass) that the signal is transmitted using an unlicensed spectrum channel. This channel occupancy can be discontinuous. A single COT cannot exceed 20ms, and the signal transmission time within a COT cannot exceed the MCOT (Multiple Channel Occupancy Time).

[0074] Channel Occupancy Time (gNB-initiated COT): Also known as the COT initiated by the network device, it refers to the channel occupancy time obtained by the network device after a successful LBT (Local Level Bypass). During the channel occupancy time, the network device can be used for downlink transmission, and under certain conditions, it can also be used for uplink transmission by the UE.

[0075] When a base station initiates a Channel Access Detection (COT), it can use the resources within the COT for downlink transmission and also share these resources with the terminal for uplink transmission. When sharing COT resources with the terminal for uplink transmission, the terminal can use one of three channel access methods: Type 2A, Type 2B, or Type 2C. Type 2A, Type 2B, and Type 2C are all channel access methods based on fixed-length listening time slots.

[0076] Terminal-initiated COT (also known as terminal-initiated COT) refers to the channel occupancy time obtained after the terminal successfully completes LBT.

[0077] In NR-U, there are the following channel access methods: Type 1 channel access, Type 2A channel access, Type 2B channel access, and Type 2C channel access.

[0078] Type 1 channel access (also known as Type 1 channel access method): This method uses multi-slot channel detection with random backoff based on contention window size adjustment. According to the channel access priority p, a channel occupancy of length Tmcot can be initiated. When using Type 1 channel access, the base station can transmit its own data and share its COT (Content Targeting) with the UE. Similarly, when using Type 1 channel access, the UE can transmit its own data and share its COT with the base station. Table 1 below shows the channel access priority and its corresponding parameters for Type-1 channel access by the terminal. A smaller value for p indicates a higher channel access priority.

[0079] Table 1 Channel access parameters corresponding to different channel priorities Channel access priority (p) mp CWmin,p CWmax,p Tmcot,p Allowed CWp values 1 2 3 7 2 ms {3,7} 2 2 7 15 4 ms {7,15} 3 3 15 1023 6 or 10 ms {15,31,63,127,255,511,1023} 4 7 15 1023 6 or 10 ms {15,31,63,127,255,511,1023} It should be noted that in Table 1 above, mp refers to the number of backoff slots corresponding to the channel access priority, CWp refers to the contention window size corresponding to the channel access priority, CWmin,p refers to the minimum value of CWp corresponding to the channel access priority, CWmax,p refers to the maximum value of CWp corresponding to the channel access priority, and Tmcot,p refers to the maximum channel occupancy time length corresponding to the channel access priority.

[0080] In NR-U, there are four channel access priorities for Type 1, with p=1 being the highest priority.

[0081] Type 2 channel access is a channel access method based on fixed-length channel listening time slots.

[0082] The Type 2A channel access method (also known as the Type 2A channel access method) involves a 25µs single-slot detection of the channel, starting 25µs before data transmission begins. This includes one 16µs detection and one 9µs detection. If both detections are successful, the channel is considered idle and access can proceed.

[0083] The Type 2B channel access method (also known as the Type 2B channel access method) uses a fixed-length single-slot channel detection of 16µs. If there is more than 4µs of idle time in the last 9µs of the detection period, the channel is considered to be idle.

[0084] The Type 2C channel access method (also known as the Type 2C channel access method) does not perform channel detection and transmits directly. Since the time difference between the current transmission and the previous transmission is less than 16us, it can be considered as the same transmission, but the transmission length does not exceed 584us.

[0085] To facilitate a better understanding of the embodiments of this application, the technical problems solved by this application will be described.

[0086] When a side-transmission system operates on unlicensed spectrum (referred to as an SL-U system), the terminal needs to determine if the channel is idle via LBT before performing side-transmission. If the channel is idle, side-transmission can be performed; otherwise, it cannot. When a terminal determines the channel is idle using the Type 1 channel access method, it can preempt the channel for side-transmission and share the Channel Occupancy Time (COT) with other terminals to assist them in accessing the channel. If a terminal receives shared COT information from other terminals, it can use Type 2 channel access methods, such as Type 2A, Type 2B, or Type 2C, within the corresponding COT time, thereby improving the success rate of channel access. If the terminal does not receive shared COT information from other terminals, it can typically only use the Type 1 channel access method. However, in the SL-U system, which terminals can use shared COT information for channel access, or how to use the received COT information to access the channel when a terminal receives multiple shared COT messages, are issues that need to be addressed in the SL-U system.

[0087] To address the aforementioned issues, this application proposes a side-pass transmission scheme. When a terminal device acquires N COT shared information, it can determine the target COT shared information from the N COT shared information and access the channel based on the parameters corresponding to the target COT shared information, thereby optimizing side-pass transmission on unlicensed spectrum.

[0088] The technical solution of this application is described in detail below through specific embodiments.

[0089] Figure 11 This is a schematic flowchart of a wireless communication method 200 according to an embodiment of this application, such as... Figure 11 As shown, the wireless communication method 200 may include at least some of the following: S210, The terminal device obtains N COT shared information, where N is a positive integer; S220, the terminal device determines the target COT shared information from the N COT shared information; S230, the terminal device accesses the channel based on the parameters corresponding to the target COT shared information.

[0090] In some embodiments, the N COT shared information is provided by other terminals.

[0091] For example, the N COT shared information are provided by N other terminals respectively.

[0092] For example, the N COT shared information is provided by the group head terminal (also known as the central control node). This N COT shared information is obtained by the group head terminal from the N terminals within its communication group.

[0093] In some embodiments, one of the N COT shared information is provided by a network device, and the other N-1 COT shared information are provided by other terminals.

[0094] For example, the other N-1 COT shared information items among the N COT shared information items are provided by N-1 other terminals respectively.

[0095] For example, the other N-1 COT shared information among the N COT shared information are provided by the group head terminal (also known as the central control node). Specifically, the other N-1 COT shared information are obtained by the group head terminal from the N-1 terminals within its communication group.

[0096] In some embodiments, COT shared information is carried in Sidelink Control Information (SCI) or Media Access Control Control Element (MAC CE), wherein the SCI includes a first-order SCI or a second-order SCI.

[0097] In some embodiments, the COT sharing information in the N COT sharing information carries at least one of the following information: Resource block set information, COT duration information, COT start time slot location, priority information, channel access type information, and target identification information.

[0098] In some embodiments, the resource block set information can be determined based on the resource block set corresponding to the transmission resources of the PSCCH or PSSCH sent together with the COT shared information, that is, the resource block set information is determined based on the resource block set occupied by the PSCCH or PSSCH sent together with the COT shared information. It should be understood that the embodiments in this application are illustrated using the example of resource block set information carried in the COT shared information, and the embodiments of this application are also applicable to the case where the resource block set information is determined based on the resource block set corresponding to the transmission resources of the PSCCH or PSSCH sent together with the COT shared information.

[0099] For example, UE-A sends COT sharing information, which includes resource block set information. UE-B receives the COT sharing information sent by UE-A and determines whether it can use the COT sharing information for channel access based on the resource block set information carried in the COT sharing information.

[0100] For example, UE-A sends COT sharing information and sends PSSCH along with the COT sharing information. The transmission resources of the PSSCH correspond to N resource block sets, where N is a positive integer. UE-B receives the COT sharing information sent by UE-A and determines the corresponding N resource block sets based on the transmission resources of the PSSCH sent along with the COT sharing information. UE-B then determines whether it can use the COT sharing information for channel access based on the N resource block sets.

[0101] In some embodiments, the target identification information can be determined based on the target identification information field in the SCI. It should be understood that the embodiments in this application are illustrated using the example of target identification information carried in COT shared information; the embodiments of this application are also applicable to situations where the target identification information is determined based on the target identification information field in the SCI sent together with the COT shared information.

[0102] For example, UE-A sends COT sharing information, which includes target identification information. UE-B receives the COT sharing information sent by UE-A and determines whether it can use the COT sharing information for channel access based on the target identification information carried in the COT sharing information.

[0103] For example, UE-A sends COT sharing information and sends SCI along with the COT sharing information. The SCI carries target identification information. UE-B receives the COT sharing information sent by UE-A and determines the target identification information based on the SCI sent along with the COT sharing information. UE-B then determines whether it can use the COT sharing information for channel access based on the target identification information.

[0104] In some embodiments, the target identification information may further include a zone ID, meaning that terminals located within the zone corresponding to the zone ID can use the COT sharing information. In some embodiments, the zone ID is carried in the COT sharing information, or the zone ID is carried in an SCI or MAC CE sent together with the COT sharing information.

[0105] For example, UE-A sends COT sharing information along with a SCI (Self-Channel Information Component). The SCI carries Zone ID information. UE-B receives the COT sharing information from UE-A and determines the Zone ID based on the SCI. UE-B then determines whether it belongs to the area corresponding to that Zone ID, and thus whether it can use the COT sharing information for channel access. For instance, if the terminal belongs to the area corresponding to that Zone ID, it can use the COT sharing information for channel access; otherwise, it cannot.

[0106] For example, UE-A sends COT sharing information, which includes Zone ID information. UE-B receives the COT sharing information from UE-A and determines whether it belongs to the area corresponding to that Zone ID based on the Zone ID information. This determines whether it can use the COT sharing information for channel access. For instance, if the terminal belongs to the area corresponding to that Zone ID, it can use the COT sharing information for channel access; otherwise, it cannot.

[0107] In some embodiments, when the first terminal sends COT sharing information, it carries first Zone ID information in the COT sharing information (or in the SCI or MAC CE sent simultaneously with the COT sharing information). Only terminals located within the area corresponding to the first Zone ID information can use the COT sharing information. Additionally, the COT sharing information (or in the SCI or MAC CE sent simultaneously with the COT sharing information) carries second Zone ID information, which indicates the area where the first terminal is located. When the second terminal receives the COT sharing information, it determines whether it is the area closest to the area where the first terminal is located and corresponds to the first Zone ID. For example, if the second terminal belongs to the area corresponding to the first Zone ID and is the area closest to the area where the first terminal is located and corresponds to the first Zone ID, it can use the COT sharing information for channel access; otherwise, it cannot use the COT sharing information for channel access.

[0108] For example, resource block set information is used to indicate that other devices (such as terminal devices and / or network devices) have successfully performed LBT on the resource block set indicated by the resource block set information, where other devices refer to the devices that sent the COT sharing information.

[0109] Specifically, for example, the duration information of COT is used to determine the remaining COT duration. Optionally, for the i-th COT shared information among N COT shared information, the remaining COT duration included in the i-th COT shared information can be determined according to the time slot where the i-th COT shared information is located. For example, the starting position of the time slot where the i-th COT shared information is located is the starting position corresponding to the remaining COT duration, or the starting position of the next time slot where the i-th COT shared information is located is the starting position corresponding to the remaining COT duration.

[0110] Specifically, for example, the starting time slot position of COT is used to determine the starting position corresponding to the remaining COT duration. Optionally, for the i-th COT shared information among N COT shared information, the starting time slot information of COT included in the i-th COT shared information is used to indicate the time slot offset, which indicates the time slot offset of the starting position corresponding to the remaining COT duration relative to the time slot where the i-th COT shared information is located.

[0111] For example, priority information represents sideline priority or channel access priority (CAPC).

[0112] Specifically, for example, channel access type information is used to indicate the type of channel access. Optionally, the channel access type information includes at least one of the following: Type2A, Type2B, Type2C, and Type1. Preferably, the channel access type is Type2A.

[0113] It should be understood that the channel access type information is used to indicate the channel access type used by other terminals when accessing the channel during the shared COT duration.

[0114] In some embodiments, the terminal device can determine the channel access type during the shared COT duration based on pre-configuration information or network configuration information. For example, the resource pool configuration information or the Band Width Part (BWP) configuration information includes indication information that indicates the channel access type when the terminal accesses the channel using the shared COT. In this case, the channel access type does not need to be indicated in the COT sharing information (i.e., the channel access type information may not be carried in the COT sharing information).

[0115] Specifically, for the i-th COT shared information among N COT shared information sets, the target identification information included in the i-th COT shared information set is used to determine the terminals that can use the i-th COT shared information set. For example, the target identification information may include terminal identification information; only terminals corresponding to this terminal identification information can use the i-th COT shared information set to access the channel. Another example is that the target identification information may include group identification information; only terminals belonging to the group corresponding to this group identification information can use the i-th COT shared information set to access the channel. Yet another example is that the target identification information may include service type information; only terminals transmitting the service type corresponding to this service type information can use the i-th COT shared information set to access the channel. It should be understood that the target identification information may include partial information from the terminal identification information, partial information from the group identification information, or partial information from the service type information. For example, the terminal identification information may be 24 bits long, while the target identification information included in the COT shared information may be 16 bits long, meaning it includes only a portion of the terminal identification information.

[0116] In some embodiments, the terminal device determines the value of the information field included in the COT sharing information sent by the terminal device based on the target COT sharing information.

[0117] In some embodiments, when a terminal device uses parameters corresponding to the target COT sharing information to access the channel, and when sending its own COT sharing information, the terminal device can determine the parameters carried in the COT sharing information sent by the terminal device based on the target COT sharing information.

[0118] For example, the resource block set information carried in the COT sharing information sent by the terminal device can be consistent with the resource block set information carried in the target COT sharing information, or the resource block set information carried in the COT sharing information sent by the terminal device can be determined based on the resource block set information carried in the target COT sharing information.

[0119] For example, the priority information carried in the COT sharing information sent by the terminal device may be consistent with the priority information carried in the target COT sharing information; or, the priority information carried in the COT sharing information sent by the terminal device may be determined based on the priority information carried in the target COT sharing information; or, the priority information carried in the COT sharing information sent by the terminal device may correspond to the side-going priority of the terminal device; or, the priority information carried in the COT sharing information sent by the terminal device may correspond to a priority lower than the priority information carried in the target COT sharing information in the side-going priority of the terminal device; or, the priority information carried in the COT sharing information sent by the terminal device may correspond to a priority higher than the priority information carried in the target COT sharing information in the side-going priority of the terminal device.

[0120] For example, the target identification information carried in the COT sharing information sent by the terminal device can be consistent with the target identification information carried in the target COT sharing information, or the target identification information carried in the COT sharing information sent by the terminal device can be determined based on the target identification information carried in the target COT sharing information.

[0121] For example, the COT duration carried in the COT sharing information sent by the terminal device can be determined based on the remaining COT duration determined in the time slot where the terminal sends the COT information.

[0122] In some embodiments, the terminal device may determine whether it can access the channel using COT sharing information based on priority information, target identification information, resource block set information, etc.

[0123] In some embodiments, the above-described S220 may specifically include: The terminal device determines the target COT shared information from the N COT shared information based on the first information; The first information includes at least one of the following: priority information corresponding to the data to be transmitted by the terminal device, identification information of the terminal device, and resource block set information determined by the terminal device.

[0124] In some embodiments, the priority information corresponding to the sideline data to be transmitted is the sideline priority information corresponding to the sideline data to be transmitted; or, the priority information corresponding to the sideline data to be transmitted is the channel access priority information corresponding to the sideline data to be transmitted.

[0125] In some embodiments, when sideline transmission is performed on unlicensed spectrum or shared spectrum, the terminal device determines the channel access priority based on the priority information of the sideline data or sideline service to be transmitted.

[0126] In some embodiments, the channel access priority information corresponding to the side data to be transmitted is determined based on a first correspondence. The first correspondence represents a correspondence between one of the following information and the channel access priority: sideline priority, latency information corresponding to sideline services, reliability information corresponding to sideline services, and quality of service (QoS) information corresponding to sideline services.

[0127] For example, the QoS information corresponding to the sideline service is the PC5 5G QoS Identifier (PQI).

[0128] In some embodiments, the terminal device obtains the first correspondence based on pre-configuration information (such as resource pool configuration information or side-by-side BWP configuration information) or network configuration information (such as resource pool configuration information or side-by-side BWP configuration information).

[0129] In some embodiments, when the first information includes at least the priority information corresponding to the sideline data to be transmitted, the terminal device determines the first COT shared information among the N COT shared information as the target COT shared information; wherein the priority corresponding to the sideline data to be transmitted is higher than or equal to the priority corresponding to the first priority information, and the priority corresponding to the first priority information is determined based on the first COT shared information.

[0130] In some embodiments, the priority corresponding to the first priority information includes a priority threshold value or a priority value.

[0131] In some embodiments, each of the N COT shared information pieces corresponds to a first priority information piece. For the i-th COT shared information piece, if the priority of the data to be transmitted is higher than or equal to the priority of the first priority information corresponding to the i-th COT shared information piece, the terminal device can use the i-th COT shared information piece to access the channel; otherwise, it cannot use the i-th COT shared information piece to access the channel.

[0132] In some embodiments, the first priority information is obtained by the terminal device based on the first COT sharing information. For example, the first COT sharing information includes the first priority information.

[0133] In some embodiments, the first priority information is determined by the terminal device based on the priority information field in the sidelink control information (SCI) of the device providing the first COT sharing information. For example, the terminal device uses the priority carried in the priority information field of the SCI of the device providing the first COT sharing information as the first priority information. Another example is that the terminal device determines the channel access priority based on the priority information field in the SCI of the device providing the first COT sharing information, and further determines the priority corresponding to the first priority information based on the channel access priority, such as using the channel access priority as the priority corresponding to the first priority information.

[0134] In some embodiments, the priority corresponding to the first priority information can also be determined based on pre-configuration information (such as resource pool configuration information or side-by-side BWP configuration information) or network configuration information (such as resource pool configuration information or side-by-side BWP configuration information), or the priority corresponding to the first priority information can also be obtained from pre-configuration information (such as resource pool configuration information or side-by-side BWP configuration information) or network configuration information (such as resource pool configuration information or side-by-side BWP configuration information).

[0135] In some embodiments, the first priority information corresponds to sideline priority information, or the first priority information corresponds to channel access priority information.

[0136] In some embodiments, when the first priority information corresponds to sideline priority information, the priority information corresponding to the sideline data to be transmitted is the sideline priority information corresponding to the sideline data to be transmitted.

[0137] In some embodiments, when the first priority information corresponds to channel access priority information, the priority information corresponding to the data to be transmitted is the channel access priority information corresponding to the data to be transmitted.

[0138] In some embodiments, when the sidelink data to be transmitted is a Physical Sidelink Control Channel (PSCCH), the priority of the sidelink data is determined according to the priority in the SCI carried by the PSCCH; when the sidelink data to be transmitted is a Physical Sidelink Shared Channel (PSSCH), the priority of the sidelink data is determined according to the priority in the SCI that schedules the PSSCH; when the sidelink data to be transmitted is sidelink feedback information, the priority of the sidelink data to be transmitted is determined according to the priority of the PSSCH corresponding to the sidelink feedback information; when the sidelink data to be transmitted is a Sidelink Synchronization Signal Block (S-SSB), the priority of the sidelink synchronization block is determined according to the pre-configuration information or network configuration information.

[0139] For example, such as Figure 12As shown, UE-A accesses the channel via Type 1 channel access before time slot n. If channel access is successful, UE-A performs sideline transmission in time slot n and carries COT sharing information in the SCI. The starting position of the COT sharing duration is the next time slot after time slot n, i.e., time slot n+1. The remaining COT sharing duration is 4 time slots, meaning 4 time slots starting from time slot n+1, i.e., the shared COT duration includes time slots n+1 to n+4. Optionally, if the COT sharing information indicates that the starting position of COT sharing is time slot n+2 and the COT duration is 2 time slots, it means that the shared COT range is the 2 time slots starting from time slot n+2, i.e., corresponding to time slots n+2 and n+3. Optionally, the COT shared information also includes priority information. If the priority information indicates a sideline priority, such as a priority value of 3, then only other terminals with a priority higher than or equal to that priority can use the COT shared information to access the channel, such as using Type 2A, Type 2B, or Type 2C channel access types in time slots n+1 to n+4. Figure 12 As shown, the side-channel priority values ​​of UE-B, UE-C, UE-D, and UE-E are all higher than the priority indicated in the COT sharing information. Therefore, UE-B, UE-C, UE-D, and UE-E will use the Type 2A channel access method to access the channel within the COT duration. If the priority of other terminals is lower than the priority indicated in the COT sharing information, they cannot use the COT sharing information to access the channel and can only use the Type 1 channel access type. Figure 13 As shown in the table, if the priority information included in the COT sharing information sent by UE-A has a value of 3 and the priority value of UE-E has a value of 5, it means that the priority of UE-E is lower than the priority indicated in the COT sharing information (the lower the priority value, the higher the priority level). Therefore, UE-E cannot use the Type 2A channel access type to access the channel within the COT duration, or UE-E cannot use the COT sharing information sent by UE-A for channel access; UE-E can only access the channel through the Type 1 channel access method. Optionally, if the priority included in the COT sharing information sent by UE-A represents the channel access priority, as shown in Table 1, and p=2, then the COT sharing information can only be used to access the channel if the channel access priority corresponding to the sideline data to be transmitted by other terminals is higher than or equal to 2 (i.e., the channel access priority is equal to 1 or 2); otherwise, it cannot.

[0140] In some embodiments, when the first information includes at least the identification information of the terminal device, the terminal device determines the second COT shared information among the N COT shared information as the target COT shared information; wherein the second COT shared information includes target identification information or the SCI sent simultaneously with the second COT shared information includes target identification information, and the identifier corresponding to the target identification information includes the identifier of the terminal device, or the service type corresponding to the target identification information is the service type corresponding to the sideline data to be transmitted by the terminal device, or the area where the terminal is located belongs to the area corresponding to the Zone ID information carried in the target identification information.

[0141] For example, the target identification information included in the second COT sharing information is used to determine the terminals that can use the second COT sharing information. Another example is that the SCI sent simultaneously with the second COT sharing information includes target identification information, which is used to determine the terminals that can use the second COT sharing information.

[0142] Optionally, the target identification information includes terminal identification information, and only the terminal corresponding to the terminal identification information can use the second COT shared information access channel; or, the target identification information includes group identification information, and only terminals belonging to the group corresponding to the group identification information can use the second COT shared information access channel; or, the target identification information includes service type information, and only terminals transmitting the service type corresponding to the service type information can use the second COT shared information access channel; or, the target identification information includes Zone ID information, and only terminals located within the area corresponding to the Zone ID information can use the second COT shared information access channel. It should be understood that the terminal identification information included in the target identification information can be a partial piece of terminal identification information, or the group identification information included in the target identification information can be a partial piece of group identification information, or the service type information included in the target identification information can be a partial piece of service type information, or the Zone ID information included in the target identification information can be a partial piece of Zone ID information.

[0143] In some embodiments, the target identification information includes terminal identification information that allows the use of the second COT shared information; or, The target identification information includes identification information of the terminal group that is permitted to use the second COT shared information; or, the target identification information includes area identification information corresponding to the area where the terminal that is permitted to use the second COT shared information is located.

[0144] For example, if the i-th COT shared information in N COT shared information includes terminal identification information, such as terminal identification information used to indicate UE-C, then only UE-C can use the channel access type of Type 2A, Type 2B or Type 2C to access the channel within the COT duration corresponding to the i-th COT shared information. Other terminals cannot use the channel access type of Type 2A, Type 2B or Type 2C to access the channel within the COT duration corresponding to the i-th COT shared information.

[0145] For example, UE-A, UE-B, UE-C, and UE-D belong to the first communication group, while UE-E does not. The COT sharing information sent by UE-A includes group identification information, which indicates the first communication group. Terminals within this first communication group, such as UE-B, UE-C, and UE-D, can access the channel using Type 2A, Type 2B, or Type 2C channel access types within the COT duration corresponding to the COT sharing information sent by UE-A. Terminals outside this first communication group, such as UE-E, cannot access the channel using Type 2A, Type 2B, or Type 2C channel access types within the COT duration corresponding to the COT sharing information sent by UE-A. Figure 13 As shown.

[0146] For example, if the COT sharing information sent by UE-A includes service type information indicating service type A, where the service type corresponding to the data to be transmitted by UE-B is service type A, the service type corresponding to the data to be transmitted by UE-C is service type A, the service type corresponding to the data to be transmitted by UE-D is service type A, and the service type corresponding to the data to be transmitted by UE-E is service type B, then UE-B, UE-C, and UE-D can access the channel using channel access types Type 2A, Type 2B, or Type 2C within the COT duration corresponding to the COT sharing information sent by UE-A, while UE-E cannot access the channel using channel access types Type 2A, Type 2B, or Type 2C within the COT duration corresponding to the COT sharing information sent by UE-A. Figure 13 As shown.

[0147] In some embodiments, when the first information includes at least resource block set information, the terminal device determines the third COT shared information among the N COT shared information as the target COT shared information; wherein the third COT shared information includes target resource block set information, and the resource block set used by the terminal device belongs to the resource block set corresponding to the target resource block set information; or, the resource block set corresponding to the transmission resources of the PSCCH or PSSCH sent simultaneously with the third COT shared information includes the resource block set used by the terminal device.

[0148] For example, COT sharing information is carried in SCI or MAC CE. When UE-A sends COT sharing information, it also sends PSSCH. The target resource block set can be determined based on the resource block set information corresponding to the transmission resources of the PSSCH. Since UE-A sends PSSCH simultaneously with COT sharing information, UE-A's use of the resource block set corresponding to the PSSCH transmission resources to send the PSSCH indicates that UE-A has successfully performed LBT on that resource block set. UE-B obtains the COT sharing information sent by UE-A. Based on the transmission resources of the PSSCH sent simultaneously with the COT sharing information, it can determine the target resource block set. Only when the resource block set indicated by the target resource block set information includes the resource block set corresponding to the sideline transmission resources to be sent by UE-B can UE-B use the COT sharing information for channel access.

[0149] For example, UE-A carries target resource block set information in the COT sharing information. This target resource block set information is used to indicate that UE-A performs LBT or successfully accesses the channel on the resource block set corresponding to the target resource block set information. UE-B obtains the COT sharing information sent by UE-A and determines whether it can use the COT sharing information for channel access based on the target resource block set information carried in the COT sharing information.

[0150] In some embodiments, when a terminal device determines to use a first resource block set for side-channel transmission, the terminal device can only use the COT sharing information for channel access if the resource block set indicated by the target resource block set information in the COT sharing information obtained by the terminal device includes the first resource block set.

[0151] For example, the resource pool includes three resource block sets, corresponding to resource block set 0, resource block set 1, and resource block set 2, respectively; the first terminal determines that it will perform side-channel transmission in resource block set 1. The first terminal receives COT sharing information a sent by the second terminal, the target resource block set information included in COT sharing information a indicates resource block set 0 and resource block set 1; the first terminal receives COT sharing information b sent by the third terminal, the target resource block set information included in COT sharing information b indicates resource block set 0; the first terminal receives COT sharing information c sent by the fourth terminal, the target resource block set information included in COT sharing information c indicates resource block set 1 and resource block set 2; then the first terminal uses the COT sharing information sent by the second terminal (i.e., COT sharing information a) for channel access, or the first terminal uses the COT sharing information sent by the fourth terminal (i.e., COT sharing information c) for channel access, and cannot use the COT sharing information sent by the third terminal (i.e., COT sharing information b) for channel access.

[0152] For example, the resource pool includes three resource block sets, corresponding to resource block set 0, resource block set 1, and resource block set 2, respectively. The first terminal determines that it will perform side-channel transmission in resource block set 1 and resource block set 2. The first terminal receives COT sharing information A sent by the second terminal, which includes target resource block set information indicating resource block set 0 and resource block set 1. The first terminal receives COT sharing information B sent by the third terminal, which includes target resource block set information indicating resource block set 0. The first terminal receives COT sharing information C sent by the fourth terminal, which includes target resource block set information indicating resource block set 1 and resource block set 2. Therefore, the first terminal can only use the COT sharing information sent by the fourth terminal (i.e., COT sharing information C) for channel access, and cannot use the COT sharing information sent by the second terminal (i.e., COT sharing information A) or the COT sharing information sent by the third terminal (i.e., COT sharing information B) for channel access.

[0153] In some embodiments, the i-th COT shared information among the N COT shared information carries first priority information, target resource block set information, and target identification information. When the terminal device receives the i-th COT shared information, the terminal device can only use the parameters corresponding to the i-th COT shared information for channel access if the target identification information in the i-th COT shared information includes the identification information of the terminal device, the priority of the terminal device is higher than or equal to the priority indicated by the first priority information in the i-th COT shared information, and the resource block set indicated by the target resource block set information in the i-th COT shared information includes the resource block set used by the terminal device for sideline transmission. For example, the terminal device can use the Type 2A channel access method for channel access within the COT duration corresponding to the i-th COT shared information.

[0154] In some embodiments, the i-th COT shared information among the N COT shared information carries first priority information, target resource block set information, and target identification information. When the terminal device receives the i-th COT shared information, the target identification information in the i-th COT shared information includes the identification information of the terminal device, or the priority of the terminal device is higher than or equal to the priority indicated by the first priority information in the i-th COT shared information, or the resource block set indicated by the target resource block set information in the i-th COT shared information includes the resource block set used by the terminal device for sideline transmission. Only then can the terminal device use the parameters corresponding to the i-th COT shared information for channel access, such as using the Type 2A channel access method for channel access within the COT duration corresponding to the i-th COT shared information.

[0155] In some embodiments, the terminal device obtains first indication information from resource pool configuration information or side-stream BWP configuration information; wherein, the first indication information is used to instruct the terminal device to determine the target COT shared information from the N COT shared information based on the first information. That is, after knowing the content indicated by the first indication information, the terminal device determines the target COT shared information from the N COT shared information based on the first information.

[0156] Specifically, for example, the first indication information may be one or more information elements (IEs) in the resource pool configuration information or the side row BWP configuration information, wherein the information element may be a field, element or domain, and this application does not limit it.

[0157] For example, if the first indication information indicates the priority information corresponding to the sideline data to be transmitted by the terminal device, then the terminal device determines the target COT shared information from the N COT shared information based on the priority information corresponding to the sideline data to be transmitted.

[0158] For example, if the first indication information indicates the identification information of the terminal device, then the terminal device determines the target COT shared information from the N COT shared information based on the identification information of the terminal device.

[0159] For example, if the first instruction information instructs the terminal device to determine the resource block set information to be used, then the terminal device determines the target COT shared information from the N COT shared information based on the resource block set information determined by the terminal device.

[0160] For example, if the first indication information indicates priority information, then the terminal device determines the target COT shared information from the N COT shared information based on the priority information.

[0161] For example, if the first indication information indicates resource block set information, then the terminal device determines the target COT shared information from the N COT shared information based on the resource block set information.

[0162] For example, if the first indication information indicates target identification information, then the terminal device determines the target COT shared information from the N COT shared information based on the target identification information.

[0163] In some embodiments, the above-described S220 may specifically include: The terminal device determines the target COT sharing information from the N COT sharing information based on the second information; wherein the second information includes, but is not limited to, at least one of the following: remaining COT duration, priority information corresponding to the COT sharing information, maximum remaining COT duration, highest priority, lowest priority, and the device providing the COT sharing information.

[0164] In some embodiments, the second information may be indicated in resource pool configuration information or side-row BWP configuration information.

[0165] In some embodiments, the priority information corresponding to the COT shared information is side-channel priority information, or the priority information corresponding to the COT shared information is channel access priority information.

[0166] For example, the highest priority can be the highest side priority, or the highest priority can be the highest channel priority.

[0167] For example, the lowest priority can be the lowest side priority, or the lowest priority can be the lowest channel priority.

[0168] In some embodiments, the remaining COT duration is determined based on the time domain resources where the line data to be transmitted on the terminal device resides.

[0169] For example, the terminal device determines the N second remaining COT durations corresponding to the time slot location of the data to be transmitted on the terminal device based on the first remaining COT duration carried in the N COT shared information. The terminal device then determines the target COT shared information based on the maximum value among the N second remaining COT durations.

[0170] In some embodiments, where the second information includes at least the remaining COT duration, the terminal device determines the target COT sharing information based on the remaining COT duration. By default, or as specified in the protocol, the terminal device selects the COT sharing information with the maximum remaining duration as the target COT sharing information.

[0171] In some embodiments, when the second information includes at least the remaining COT duration, the terminal device determines the fourth COT shared information among the N COT shared information as the target COT shared information. Optionally, the fourth COT shared information is the COT shared information with the longest remaining COT duration among the N COT shared information. Optionally, the fourth COT shared information is the COT shared information among the N COT shared information whose remaining COT duration is greater than or equal to a first threshold value.

[0172] In some embodiments, the remaining COT duration corresponding to the fourth COT shared information is greater than or equal to the first threshold value, or the remaining COT duration corresponding to each of the N COT shared information is greater than or equal to the first threshold value.

[0173] In some embodiments, if the N COT shared information does not include COT information with a remaining COT duration greater than or equal to the first threshold value, the terminal device will not send COT shared information when accessing the channel using the parameters corresponding to the fourth COT shared information. That is, if the COT shared information detected by the terminal device does not include COT shared information that meets the first threshold value, the terminal device will not send COT shared information when accessing the channel using the COT shared information.

[0174] In some embodiments, the first threshold value is obtained based on pre-configuration information or network device configuration information. For example, the first threshold value is indicated in resource pool configuration information or side-stream BWP configuration information.

[0175] For example, such as Figure 14As shown, UE-C (i.e., the terminal device in this application) determines that it will send sideline data in time slot n+2 based on resource selection or network scheduling information, and the sideline priority is 2; UE-C receives COT sharing information A sent by UE-A in time slot n. The target identification information included in COT sharing information A includes the identifier of UE-C, and the priority carried in COT sharing information A is 4. Therefore, UE-C can use COT sharing information A sent by UE-A for channel access. The remaining COT duration corresponding to COT sharing information A (i.e. Figure 14 The first remaining COT duration (in the data) is 3 time slots, that is, 3 time slots starting from time slot n, including time slot n to time slot n+2; further, UE-C receives COT sharing information B sent by UE-B in time slot n+1. The target identification information included in COT sharing information B includes the identifier of UE-C, and the priority value carried in COT sharing information B is 3. Therefore, UE-C can use COT sharing information B sent by UE-B for channel access. The remaining COT duration corresponding to COT sharing information B (i.e., Figure 14 The second remaining COT duration (in the data) is 4 time slots, that is, 4 time slots starting from time slot n+1, including time slot n+1 to time slot n+4. Since time slot n+2 is within the duration range corresponding to the shared COT, UE-C uses the Type 2A channel access type to access the channel before time slot n+2. Since UE-C accesses the channel in time slot n+2, UE-C determines that the remaining COT duration in time slot n+2 is 1 time slot according to COT sharing information A, and determines that the remaining COT duration in time slot n+2 is 3 time slots according to COT sharing information B. Therefore, UE-C selects the parameters corresponding to the COT sharing information with the largest remaining COT duration for channel access, that is, UE-C accesses the channel according to the parameters corresponding to COT sharing information B.

[0176] like Figure 14 As shown, since UE-C accesses the channel based on the parameters corresponding to COT information B sent by UE-B, after UE-C successfully accesses the channel, the COT sharing information carried in the sideline SCI when sending sideline data is determined based on COT sharing information B. For example, the priority information in the COT sharing information sent by UE-C is determined based on the priority in COT sharing information B, i.e., the priority value is 3; the remaining COT duration in the COT sharing information sent by UE-C is determined based on the remaining COT duration in COT sharing information B, i.e., the remaining COT duration is 3 time slots, including time slots n+2 to n+4.

[0177] like Figure 14As shown, UE-C receives COT sharing information A from UE-A and determines that the first remaining COT duration at time slot n+2 is 1 time slot. UE-C receives COT sharing information B from UE-B and determines that the second remaining COT duration at time slot n+2 is 3 time slots. If UE-C uses COT sharing information A from UE-A for channel access, UE-C cannot send COT sharing information because the remaining COT duration after time slot n+2 is 0. However, if UE-C uses COT sharing information B from UE-B for channel access, UE-C can send COT sharing information and indicate that the remaining COT duration is 3 time slots, including time slots n+3 and n+4 after time slot n+2. Therefore, other terminals can still use the COT sharing information sent by UE-C to access the channel. At this point, by configuring the first threshold value to 2 time slots, only COT shared information with a determined remaining COT duration greater than or equal to 2 time slots is available COT shared information. Therefore, in this example, the available COT shared information is COT shared information B, excluding COT shared information A.

[0178] In some embodiments, the resource pool configuration information includes an information element indicating the remaining COT duration or COT duration, that is, the terminal device determines the COT sharing information to be used based on the remaining COT duration or COT duration. By default, or according to the protocol, the terminal device selects the COT sharing information with the maximum remaining duration as the COT sharing information to be used.

[0179] In some embodiments, when the second information includes at least the maximum remaining COT duration, the terminal device determines the COT sharing information with the largest remaining COT duration among the N COT sharing information as the target COT sharing information.

[0180] In some embodiments, the resource pool configuration information includes an information element indicating the maximum remaining duration, and the terminal device selects the COT sharing information with the maximum remaining COT duration as the COT sharing information to be used.

[0181] In some embodiments, where the second information includes at least priority information corresponding to the COT sharing information, the terminal device determines the target COT sharing information based on the priority information corresponding to the COT sharing information. By default, or according to the protocol, the terminal device selects the COT sharing information with the lowest priority as the target COT sharing information, or the terminal device selects the COT sharing information with the highest priority as the target COT sharing information.

[0182] In some embodiments, the resource pool configuration information includes an information element indicating a priority, such as a side-line priority. That is, the terminal device determines the COT sharing information to be used based on the side-line priority. By default, or according to the protocol, the terminal device selects the COT sharing information corresponding to the lowest or highest side-line priority as the COT sharing information to be used.

[0183] In some embodiments, the resource pool configuration information includes an information element indicating a priority, such as a channel access priority. That is, the terminal device determines the COT sharing information to be used based on the channel access priority. By default, or according to the protocol, the terminal device selects the COT sharing information corresponding to the lowest or highest channel access priority as the COT sharing information to be used.

[0184] In some embodiments, when the second information includes at least priority information corresponding to the COT sharing information, the terminal device determines the fifth COT sharing information among the N COT sharing information as the target COT sharing information; wherein the fifth COT sharing information is the COT sharing information with the lowest priority among the N COT sharing information, or the fifth COT sharing information is the COT sharing information with the highest priority among the N COT sharing information.

[0185] Specifically, for example, the five COT shared information are the COT shared information with the lowest side-channel priority among the N COT shared information, or the five COT shared information are the COT shared information with the lowest channel priority among the N COT shared information.

[0186] Specifically, for example, the five COT shared information are the COT shared information with the highest side-channel priority among the N COT shared information, or the five COT shared information are the COT shared information with the highest channel priority among the N COT shared information.

[0187] It should be understood that in a side-channel system, a higher priority value indicates a lower priority; similarly, for channel access level, a higher channel access level value indicates a lower channel access level.

[0188] For example, when a terminal device determines the COT sharing information, it selects the COT sharing information to use based on the lowest priority. This ensures that when the terminal device sends its COT sharing information, the priority information carried in its COT sharing information also corresponds to the lowest priority, thereby enabling more terminals to use the COT sharing information. This increases the probability that other terminals can successfully access the channel.

[0189] For example, when a terminal device determines the COT sharing information, it determines the COT sharing information to use based on the highest priority. This ensures that when the terminal device sends the COT sharing information, the priority information carried in its COT sharing information also corresponds to the highest priority. Only terminal devices with a priority higher than the highest priority can use the COT sharing information, thereby reducing the number of other terminals accessing the channel or the probability of success, reducing the system's congestion level, and ensuring the transmission performance of high-priority terminals.

[0190] In some embodiments, when the second information includes at least the highest priority, the terminal device determines the COT sharing information with the highest side-row priority among the N COT sharing information as the target COT sharing information; or, the terminal device determines the COT sharing information with the highest channel priority among the N COT sharing information as the target COT sharing information.

[0191] In one embodiment, the resource pool configuration information includes an information element indicating the highest priority, such as side-line priority or channel access priority, that is, the terminal device selects the COT sharing information corresponding to the highest priority as the COT sharing information to be used.

[0192] In some embodiments, when the second information includes at least the lowest priority, the terminal device determines the COT sharing information with the lowest side priority among the N COT sharing information as the target COT sharing information; or, the terminal device determines the COT sharing information with the lowest channel priority among the N COT sharing information as the target COT sharing information.

[0193] In one embodiment, the resource pool configuration information includes an information element indicating the lowest priority, where the priority represents, for example, the side-going priority or the channel access priority. That is, the terminal device selects the COT sharing information corresponding to the lowest priority as the COT sharing information to be used.

[0194] In some embodiments, where the second information includes at least a device that provides COT sharing information, the terminal device determines the COT sharing information provided by the network device from among the N COT sharing information as the target COT sharing information.

[0195] For example, when a network device initiates COT sharing, it can send corresponding COT sharing information to each terminal through Downlink Control Information (DCI) or Radio Resource Control (RRC) signaling. Since the network device can indicate the same COT sharing information to all terminals, ensuring that terminals within the cell can access the channel based on the same COT sharing information, when a terminal receives multiple COT sharing information, if it includes the COT sharing information sent by the network device, the terminal can access the channel based on the COT sharing information sent by the network device.

[0196] In some embodiments, the terminal device obtains second indication information from resource pool configuration information or side-stream BWP configuration information; wherein, the second indication information is used to instruct the terminal device to determine the target COT shared information from the N COT shared information based on the second information. That is, after learning the content indicated by the second indication information, the terminal device determines the target COT shared information from the N COT shared information based on the second information.

[0197] Specifically, for example, the second instruction information may be one or more information elements (IEs) in the resource pool configuration information or the sidebar BWP configuration information, wherein the information element may be a field, element or domain, and this application is not limited thereto.

[0198] For example, if the second indication information indicates the remaining COT duration, the terminal device determines the target COT shared information from the N COT shared information based on the remaining COT duration.

[0199] For example, if the second indication information indicates the priority information corresponding to the COT shared information, then the terminal device determines the target COT shared information from the N COT shared information according to the priority information corresponding to the COT shared information.

[0200] For example, if the second indication information indicates the maximum remaining COT duration, the terminal device determines the target COT shared information from the N COT shared information based on the maximum remaining COT duration.

[0201] For example, if the second indication information indicates the highest priority, then the terminal device determines the target COT shared information from the N COT shared information based on the highest priority.

[0202] For example, if the second indication information indicates the lowest priority, the terminal device determines the target COT shared information from the N COT shared information based on the lowest priority.

[0203] For example, if the second instruction information indicates the device that provides COT sharing information, then the terminal device determines the target COT sharing information from the N COT sharing information based on the device that provides the COT sharing information.

[0204] In some embodiments, S210 may specifically include: The terminal device acquires M COT shared information items; and the terminal device determines N COT shared information items from the M COT shared information items based on third information. Where M is a positive integer, and N ≤ M.

[0205] The third information includes at least one of the following: priority information corresponding to the data to be transmitted on the terminal device, identification information of the terminal device, and resource block set information determined by the terminal device. In some embodiments, when the third information includes at least priority information corresponding to the data to be transmitted, the priority of the data to be transmitted is higher than or equal to the priority corresponding to the second priority information, and the priority corresponding to the second priority information is determined based on the N COT shared information. Specifically, for example, the second priority information is obtained by the terminal device based on the N COT shared information respectively; or, the second priority information is determined by the terminal device based on the priority information field in the SCI of the device providing the N COT shared information respectively.

[0206] In some embodiments, each of the M COT shared information corresponds to a second priority information.

[0207] In some embodiments, the second priority information corresponding to the M COT shared information may also be determined based on resource pool configuration information or side-stream BWP configuration information, or the second priority information corresponding to the M COT shared information may also be obtained from resource pool configuration information or side-stream BWP configuration information.

[0208] For example, for the m-th COT shared information among the M COT shared information, the second priority information is determined according to the priority carried in the m-th COT shared information. If the priority of the data to be transmitted by the terminal device is higher than or equal to the priority corresponding to the second priority information, then the m-th COT shared information is used as one of the N COT shared information; otherwise, the m-th COT shared information cannot be used as one of the N COT shared information.

[0209] In some embodiments, the priority corresponding to the second priority information includes a priority threshold value or a priority value.

[0210] In some embodiments, the second priority information corresponds to sideline priority information, or the second priority information corresponds to channel access priority information.

[0211] In some embodiments, when the second priority information corresponds to the sideline priority information, the priority information corresponding to the sideline data to be transmitted is the sideline priority information corresponding to the sideline data to be transmitted.

[0212] In some embodiments, when the second priority information corresponds to channel access priority information, the priority information corresponding to the data to be transmitted is the channel access priority information corresponding to the data to be transmitted.

[0213] For example, a terminal device acquires four COT shared information pieces (M=4), denoted as COT shared information A, COT shared information B, COT shared information C, and COT shared information D. COT shared information A carries priority determination second priority information a, COT shared information B carries priority determination second priority information b, COT shared information C carries priority determination second priority information c, and COT shared information D carries priority determination second priority information d. Where the priority of the data to be transmitted by the terminal device is higher than or equal to the priority corresponding to second priority information a, the priority of the data to be transmitted by the terminal device is higher than or equal to the priority corresponding to second priority information b, the priority of the data to be transmitted by the terminal device is lower than the priority corresponding to second priority information c, and the priority of the data to be transmitted by the terminal device is lower than the priority corresponding to second priority information d, then COT shared information A and COT shared information B are each considered as one of the N COT shared information pieces, and COT shared information C and COT shared information D cannot be considered as COT shared information pieces among the N COT shared information pieces.

[0214] In some embodiments, the SCI sent simultaneously with each of the M COT shared information pieces includes target identification information; where the third information at least includes the identification information of the terminal device, the identifier corresponding to the target identification information included in the SCI sent simultaneously with each of the N COT shared information pieces includes the identifier of the terminal device. It should be understood that the terminal identification information included in the target identification information may be a portion of the terminal identification information, or the group identification information included in the target identification information may be a portion of the group identification information, or the service type information included in the target identification information may be a portion of the service type information, or the Zone ID information included in the target identification information may be a portion of the Zone ID information.

[0215] In some embodiments, each of the M COT shared information pieces includes target identification information; where the third information at least includes the identification information of the terminal device, the identifier corresponding to the target identification information included in the N COT shared information pieces includes the identifier of the terminal device. Specifically, for example, the target identification information includes terminal identification information that allows the use of the corresponding COT shared information; or, the target identification information includes identification information of a group of terminals that allows the use of the corresponding COT shared information.

[0216] Specifically, for the m-th COT shared information among the M COT shared information, it is determined whether the m-th COT shared information can be used as one of the N COT shared information based on the target identification information carried in the m-th COT shared information. For example, if the target identification information carried in the m-th COT shared information includes terminal identification information, the m-th COT shared information can be used as one of the N COT shared information only if the terminal corresponding to the terminal identification information is the terminal device. Another example is if the target identification information carried in the m-th COT shared information includes group identification information, the m-th COT shared information can be used as one of the N COT shared information only if the terminal device belongs to the communication group corresponding to the group identification information. Yet another example is if the target identification information carried in the m-th COT shared information includes service type information, the m-th COT shared information can be used as one of the N COT shared information only if the terminal device transmits services of the service type corresponding to the service type information. For example, the target identification information carried in the m-th COT shared information includes Zone ID information. Only if the terminal device is located within the area corresponding to the Zone ID information can the m-th COT shared information be considered as one of N COT shared information. It should be understood that the terminal identification information included in the target identification information can be a partial piece of terminal identification information, or the group identification information included in the target identification information can be a partial piece of group identification information, or the service type information included in the target identification information can be a partial piece of service type information, or the Zone ID information included in the target identification information can be a partial piece of Zone ID information.

[0217] For example, a terminal device has a terminal identifier of 'a', and this terminal device has acquired four COT shared information pieces (i.e., M=4), denoted as COT shared information A, COT shared information B, COT shared information C, and COT shared information D, respectively. COT shared information A carries target identifier information including terminal identifier 'a', COT shared information B carries target identifier information including terminal identifier 'a', COT shared information C carries target identifier information including terminal identifier 'c', and COT shared information D carries target identifier information including terminal identifier 'd'. Then, COT shared information A and COT shared information B are each considered as one of the N COT shared information pieces, and COT shared information C and COT shared information D cannot be considered as COT shared information within the N COT shared information pieces.

[0218] In some embodiments, the set of resource blocks corresponding to the transmission resources of the PSCCH or PSSCH transmitted simultaneously with each of the N COT shared information messages includes the set of resource blocks determined by the terminal device. Therefore, N COT shared information messages can be determined from M COT shared information messages.

[0219] In some embodiments, each of the M COT shared information includes target resource block set information; when the third information includes at least the resource block set information determined by the terminal device, the resource block set corresponding to the target resource block set information included in the N COT shared information includes the resource block set determined by the terminal device.

[0220] For example, for the m-th COT shared information among the M COT shared information, according to the target resource block set information carried in the m-th COT shared information indicating resource block set 0 and resource block set 1, if the terminal device determines that it will perform side-by-side transmission in resource block set 0 and / or resource block set 1, then the m-th COT shared information is regarded as one of the N COT shared information; otherwise, the m-th COT shared information cannot be regarded as one of the N COT shared information.

[0221] For example, a terminal device determines that it will perform a side-channel transmission between resource block set 0 and resource block set 1, and the terminal device has acquired four COT shared information sets (i.e., M=4), denoted as COT shared information A, COT shared information B, COT shared information C, and COT shared information D. COT shared information A carries target resource block set information indicating resource block set 0 and resource block set 1; COT shared information B carries target resource block set information indicating resource block set 0, resource block set 1, and resource block set 2; COT shared information C carries target resource block set information indicating resource block set 1 and resource block set 2; and COT shared information D carries target resource block set information indicating resource block set 2 and resource block set 3. Then, COT shared information A and COT shared information B are each considered as one of the N COT shared information sets, and COT shared information C and COT shared information D cannot be considered as COT shared information sets within the N COT shared information sets.

[0222] Therefore, in this embodiment of the application, when the terminal device obtains N COT sharing information, it can determine the target COT sharing information from the N COT sharing information and perform channel access based on the parameters corresponding to the target COT sharing information.

[0223] Furthermore, the terminal device can determine the target COT shared information from N COT shared information based on the first information or the second information. And the terminal device can determine N COT shared information from M COT shared information based on the third information.

[0224] The above text combined Figures 11 to 14 The method embodiments of this application are described in detail below, in conjunction with... Figure 15 The present application describes the device embodiments in detail. It should be understood that the device embodiments correspond to the method embodiments, and similar descriptions can be referred to the method embodiments.

[0225] Figure 15 A schematic block diagram of a terminal device 300 according to an embodiment of this application is shown. Figure 15 As shown, the terminal device 300 includes: Communication unit 310 is used to acquire shared information on the occupancy time (COT) of N channels, where N is a positive integer; Processing unit 320 is used to determine the target COT shared information from the N COT shared information; The processing unit 320 is also used to perform channel access based on the parameters corresponding to the target COT shared information.

[0226] In some embodiments, the N COT shared information is provided by other terminals; or, One of the N COT shared information is provided by a network device, and the other N-1 COT shared information are provided by other terminals.

[0227] In some embodiments, the COT sharing information in the N COT sharing information carries at least one of the following information: Resource block set information, COT duration information, COT start time slot location, priority information, channel access type information, and target identification information.

[0228] In some embodiments, the processing unit 320 is specifically used for: The target COT shared information is determined from the N COT shared information based on the first information; The first information includes at least one of the following: The priority information corresponding to the data to be transmitted by the terminal device, the identification information of the terminal device, and the resource block set information determined by the terminal device.

[0229] In some embodiments, when the first information includes at least the priority information corresponding to the line data to be transmitted, the processing unit 320 is specifically used for: The first COT shared information among the N COT shared information is identified as the target COT shared information; The priority of the data to be transmitted is higher than or equal to the priority of the first priority information, which is determined based on the first COT shared information.

[0230] In some embodiments, the first priority information is obtained by the terminal device based on the first COT sharing information; or, The first priority information is determined by the terminal device based on the priority information field in the side-by-side control information (SCI) of the device that provides the first COT shared information.

[0231] In some embodiments, the priority corresponding to the first priority information includes a priority threshold value or a priority value.

[0232] In some embodiments, the first priority information corresponds to sideline priority information, or the first priority information corresponds to channel access priority information.

[0233] In some embodiments, when the first priority information corresponds to sideline priority information, the priority information corresponding to the sideline data to be transmitted is the sideline priority information corresponding to the sideline data to be transmitted; or... When the first priority information corresponds to the channel access priority information, the priority information corresponding to the data to be transmitted is the channel access priority information corresponding to the data to be transmitted.

[0234] In some embodiments, the channel access priority information corresponding to the side data to be transmitted is determined based on a first correspondence. The first correspondence represents the correspondence between one of the following information and the channel access priority: sideline priority, latency information corresponding to sideline services, reliability information corresponding to sideline services, and quality of service (QoS) information corresponding to sideline services.

[0235] In some embodiments, where the first information includes at least the identification information of the terminal device, the processing unit 320 is specifically used for: The second COT shared information among the N COT shared information is identified as the target COT shared information; The second COT shared information includes target identification information, or the sideline control information (SCI) sent simultaneously with the second COT shared information includes target identification information, and the identifier corresponding to the target identification information includes the identifier of the terminal device.

[0236] In some embodiments, the target identification information includes terminal identification information that allows the use of the second COT shared information; or, The target identification information includes identification information of terminal groups that are permitted to use the second COT shared information; or, the target identification information includes area identification information corresponding to the area where the terminals permitted to use the second COT shared information are located.

[0237] In some embodiments, where the first information includes at least the resource block set information determined by the terminal device, the processing unit 320 is specifically configured to: The third COT shared information among the N COT shared information is identified as the target COT shared information; The third COT shared information includes target resource block set information, and the resource block set used by the terminal device belongs to the resource block set corresponding to the target resource block set information; or, the resource block set corresponding to the transmission resources of the Physical Side Cross-Line Control Channel (PSCCH) or Physical Side Cross-Line Shared Channel (PSSCH) sent simultaneously with the third COT shared information includes the resource block set used by the terminal device.

[0238] In some embodiments, the communication unit 310 is further configured to obtain first indication information from resource pool configuration information or sideband bandwidth portion (BWP) configuration information; The first instruction information is used to instruct the terminal device to determine the target COT shared information from the N COT shared information based on the first information.

[0239] In some embodiments, the processing unit 320 is specifically used for: The target COT shared information is determined from the N COT shared information based on the second information; The second information includes at least one of the following: Remaining COT duration, priority information corresponding to COT sharing information, maximum remaining COT duration, highest priority, lowest priority, and the device providing COT sharing information.

[0240] In some embodiments, the priority information corresponding to the COT shared information is side-channel priority information, or the priority information corresponding to the COT shared information is channel access priority information.

[0241] In some embodiments, where the second information includes at least the remaining COT duration, the processing unit 320 is specifically configured to: The fourth COT shared information among the N COT shared information is identified as the target COT shared information; Among them, the fourth COT shared information is the COT shared information with the longest remaining COT duration among the N COT shared information.

[0242] In some embodiments, the remaining COT duration corresponding to the fourth COT shared information is greater than or equal to the first threshold value, or the remaining COT duration corresponding to each of the N COT shared information is greater than or equal to the first threshold value.

[0243] In some embodiments, if the N COT shared information does not include COT information with a remaining COT duration greater than or equal to the first threshold value, the terminal device does not send COT shared information when accessing the channel using the parameters corresponding to the fourth COT shared information.

[0244] In some embodiments, the first threshold value is obtained based on pre-configuration information or network device configuration information.

[0245] In some embodiments, where the second information includes at least the maximum remaining COT duration, the processing unit 320 is specifically used for: The COT sharing information with the largest remaining COT duration among the N COT sharing information is determined as the target COT sharing information.

[0246] In some embodiments, the remaining COT duration is determined based on the time domain resources where the line data to be transmitted on the terminal device resides.

[0247] In some embodiments, where the second information includes at least priority information corresponding to COT shared information, the processing unit 320 is specifically used for: The fifth COT shared information among the N COT shared information is identified as the target COT shared information; Wherein, the fifth COT shared information is either the lowest priority COT shared information among the N COT shared information, or the fifth COT shared information is the highest priority COT shared information among the N COT shared information.

[0248] In some embodiments, where the second information includes at least the highest priority, the processing unit 320 is specifically used for: The COT shared information with the highest side-view priority among the N COT shared information is determined as the target COT shared information; or... The COT sharing information with the highest channel priority among the N COT sharing information is determined as the target COT sharing information.

[0249] In some embodiments, where the second information includes at least the lowest priority, the processing unit 320 is specifically configured to: The COT shared information with the lowest side-line priority among the N COT shared information is determined as the target COT shared information; or... The COT sharing information with the lowest channel priority among the N COT sharing information is determined as the target COT sharing information.

[0250] In some embodiments, where the second information includes at least a device providing COT sharing information, the processing unit 320 is specifically configured to: The COT shared information provided by the network device among the N COT shared information is identified as the target COT shared information.

[0251] In some embodiments, the communication unit 310 is further configured to obtain second indication information from resource pool configuration information or side-stream BWP configuration information; The second instruction information is used to instruct the terminal device to determine the target COT shared information from the N COT shared information based on the second information.

[0252] In some embodiments, the communication unit 310 is further configured to acquire M COT shared information; The processing unit 320 is also configured to determine the N COT shared information from the M COT shared information based on the third information; The third information includes at least one of the following: priority information corresponding to the data to be transmitted on the terminal device, identification information of the terminal device, and resource block set information determined by the terminal device. Where M is a positive integer and N≤M.

[0253] In some embodiments, when the third information includes at least the priority information corresponding to the side data to be transmitted, the priority corresponding to the side data to be transmitted is higher than or equal to the priority corresponding to the second priority information, and the priority corresponding to the second priority information is determined based on the N COT shared information.

[0254] In some embodiments, the second priority information is obtained by the terminal device based on the N COT shared information; or, The second priority information is determined by the terminal device based on the priority information field in the SCI of the device that provides the N COT shared information.

[0255] In some embodiments, the priority corresponding to the second priority information includes a priority threshold value or a priority value.

[0256] In some embodiments, the second priority information corresponds to sideline priority information, or the second priority information corresponds to channel access priority information.

[0257] In some embodiments, when the second priority information corresponds to sideline priority information, the priority information corresponding to the sideline data to be transmitted is the sideline priority information corresponding to the sideline data to be transmitted; or... When the second priority information corresponds to the channel access priority information, the priority information corresponding to the data to be transmitted is the channel access priority information corresponding to the data to be transmitted.

[0258] In some embodiments, each of the M COT shared information pieces includes target identification information; when the third information at least includes the identification information of the terminal device, the identifier corresponding to the target identification information included in the N COT shared information pieces includes the identifier of the terminal device; or, The SCI sent simultaneously with each of the M COT shared information includes target identification information; when the third information includes at least the identification information of the terminal device, the identifier corresponding to the target identification information included in the SCI sent simultaneously with each of the N COT shared information includes the identifier of the terminal device.

[0259] In some embodiments, the target identification information includes terminal identification information that allows the use of the corresponding COT shared information; or, The target identification information includes identification information of terminal groups that are allowed to use the corresponding COT shared information; or, the target identification information includes area identification information corresponding to the area where the terminals that are allowed to use the corresponding COT shared information are located.

[0260] In some embodiments, each of the M COT shared information pieces includes target resource block set information; where the third information at least includes resource block set information determined by the terminal device, the resource block set corresponding to the target resource block set information included in the N COT shared information pieces includes the resource block set determined by the terminal device; or, The set of resource blocks corresponding to the transmission resources of the PSCCH or PSSCH sent simultaneously with each of the N COT shared information includes the set of resource blocks determined by the terminal device.

[0261] In some embodiments, the processing unit 320 is further configured to determine the value of the information field included in the COT information sent by the terminal device based on the target COT sharing information.

[0262] In some embodiments, the communication unit may be a communication interface or transceiver, or an input / output interface of a communication chip or system-on-a-chip. The processing unit may be one or more processors.

[0263] It should be understood that the terminal device 300 according to the embodiments of this application may correspond to the terminal device in the method embodiments of this application, and the above and other operations and / or functions of each unit in the terminal device 300 are respectively for implementing Figure 11 The corresponding procedures for the terminal device in the wireless communication method 200 shown are not described in detail here for the sake of brevity.

[0264] Figure 16 This is a schematic structural diagram of a communication device 400 provided in an embodiment of this application. Figure 16 The communication device 400 shown includes a processor 410, which can call and run computer programs from memory to implement the methods in the embodiments of this application.

[0265] In some embodiments, such as Figure 16 As shown, the communication device 400 may further include a memory 420. The processor 410 can retrieve and run computer programs from the memory 420 to implement the methods described in this embodiment.

[0266] The memory 420 can be a separate device independent of the processor 410, or it can be integrated into the processor 410.

[0267] In some embodiments, such as Figure 16 As shown, the communication device 400 may also include a transceiver 430, and the processor 410 may control the transceiver 430 to communicate with other devices. Specifically, it may send information or data to other devices or receive information or data sent by other devices.

[0268] The transceiver 430 may include a transmitter and a receiver. The transceiver 430 may further include an antenna, and the number of antennas may be one or more.

[0269] In some embodiments, the communication device 400 may specifically be a network device in the embodiments of this application, and the communication device 400 may implement the corresponding processes implemented by the network device in the various methods of the embodiments of this application. For the sake of brevity, it will not be described in detail here.

[0270] In some embodiments, the communication device 400 may specifically be a terminal device in the embodiments of this application, and the communication device 400 may implement the corresponding processes implemented by the terminal device in the various methods of the embodiments of this application. For the sake of brevity, it will not be described in detail here.

[0271] Figure 17 This is a schematic structural diagram of the device according to an embodiment of this application. Figure 17 The illustrated apparatus 500 includes a processor 510, which can call and run computer programs from memory to implement the methods in the embodiments of this application.

[0272] In some embodiments, such as Figure 17 As shown, the device 500 may further include a memory 520. The processor 510 can retrieve and run computer programs from the memory 520 to implement the methods described in the embodiments of this application.

[0273] The memory 520 can be a separate device independent of the processor 510, or it can be integrated into the processor 510.

[0274] In some embodiments, the device 500 may further include an input interface 530. The processor 510 can control the input interface 530 to communicate with other devices or chips; specifically, it can acquire information or data sent by other devices or chips.

[0275] In some embodiments, the device 500 may further include an output interface 540. The processor 510 can control the output interface 540 to communicate with other devices or chips; specifically, it can output information or data to other devices or chips.

[0276] In some embodiments, the device can be applied to the network device in the embodiments of this application, and the device can implement the corresponding processes implemented by the network device in the various methods of the embodiments of this application. For the sake of brevity, it will not be described in detail here.

[0277] In some embodiments, the device can be applied to the terminal device in the embodiments of this application, and the device can implement the corresponding processes implemented by the terminal device in the various methods of the embodiments of this application. For the sake of brevity, it will not be described in detail here.

[0278] In some embodiments, the apparatus mentioned in the present application may also be a chip. For example, it may be a system-on-a-chip, a system-on-a-chip, a chip system, or a system-on-a-chip, etc.

[0279] Figure 18 This is a schematic block diagram of a communication system 600 provided in an embodiment of this application. Figure 18 As shown, the communication system 600 includes a terminal device 610 and a network device 620.

[0280] The terminal device 610 can be used to implement the corresponding functions implemented by the terminal device in the above method, and the network device 620 can be used to implement the corresponding functions implemented by the network device in the above method. For the sake of brevity, they will not be described in detail here.

[0281] It should be understood that the processor in the embodiments of this application may be an integrated circuit chip with signal processing capabilities. In implementation, the steps of the above method embodiments can be completed by integrated logic circuits in the processor's hardware or by instructions in software form. The processor described above can be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. It can implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of this application. The general-purpose processor can be a microprocessor or any conventional processor. The steps of the methods disclosed in the embodiments of this application can be directly embodied in the execution of a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor. The software modules can be located in random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, or other mature storage media in the art. The storage medium is located in memory, and the processor reads information from the memory and, in conjunction with its hardware, completes the steps of the above method.

[0282] It is understood that the memory in the embodiments of this application can be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory. The non-volatile memory can be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. The volatile memory can be random access memory (RAM), which is used as an external cache. By way of example, but not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), Synchronous DRAM (SDRAM), Double Data Rate SDRAM (DDR SDRAM), Enhanced Synchronous DRAM (ESDRAM), Synchlink DRAM (SLDRAM), and Direct Rambus RAM (DR RAM). It should be noted that the memory used in the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0283] It should be understood that the above-described memory is exemplary and not a limiting description. For example, the memory in the embodiments of this application may also be static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct memory bus RAM (DR RAM), etc. That is to say, the memory in the embodiments of this application is intended to include, but is not limited to, these and any other suitable types of memory.

[0284] This application also provides a computer-readable storage medium for storing computer programs.

[0285] In some embodiments, the computer-readable storage medium may be applied to the network device in the embodiments of this application, and the computer program causes the computer to execute the corresponding processes implemented by the network device in the various methods of the embodiments of this application. For the sake of brevity, these will not be described in detail here.

[0286] In some embodiments, the computer-readable storage medium can be applied to the terminal device in the embodiments of this application, and the computer program causes the computer to execute the corresponding processes implemented by the terminal device in the various methods of the embodiments of this application. For the sake of brevity, it will not be described in detail here.

[0287] This application also provides a computer program product, including computer program instructions.

[0288] In some embodiments, the computer program product can be applied to the network device in the embodiments of this application, and the computer program instructions cause the computer to execute the corresponding processes implemented by the network device in the various methods of the embodiments of this application. For the sake of brevity, they will not be described in detail here.

[0289] In some embodiments, the computer program product can be applied to the terminal device in the embodiments of this application, and the computer program instructions cause the computer to execute the corresponding processes implemented by the terminal device in the various methods of the embodiments of this application. For the sake of brevity, they will not be described in detail here.

[0290] This application also provides a computer program.

[0291] In some embodiments, the computer program can be applied to the network device in the embodiments of this application. When the computer program is run on a computer, it causes the computer to execute the corresponding processes implemented by the network device in the various methods of the embodiments of this application. For the sake of brevity, it will not be described in detail here.

[0292] In some embodiments, the computer program can be applied to the terminal device in the embodiments of this application. When the computer program is run on a computer, it causes the computer to execute the corresponding processes implemented by the terminal device in the various methods of the embodiments of this application. For the sake of brevity, it will not be described in detail here.

[0293] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0294] Those skilled in the art will understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0295] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between apparatuses or units may be electrical, mechanical, or other forms.

[0296] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0297] In addition, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0298] If the aforementioned functions are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or a portion of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0299] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A method for wireless communication, characterized in that, include: The terminal device obtains N channel occupancy time (COT) shared information, where N is a positive integer; The terminal device determines the target COT shared information from the N COT shared information; The terminal device accesses the channel based on the parameters corresponding to the target COT shared information.

2. The method as described in claim 1, characterized in that, The shared information of the N COTs is provided by other terminals.

3. The method as described in claim 1 or 2, characterized in that, The COT shared information in the N COT shared information sets carries at least one of the following information: Resource block set information, COT duration information, priority information, and target identifier information.

4. The method as described in claim 1 or 2, characterized in that, The terminal device determines the target COT shared information from the N COT shared information, including: The terminal device determines the target COT shared information from the N COT shared information based on the first information; The first information includes at least one of the following: The priority information corresponding to the data to be transmitted on the terminal device, the identification information of the terminal device, and the resource block set information determined by the terminal device.

5. The method as described in claim 4, characterized in that, When the first information includes at least the priority information corresponding to the sideline data to be transmitted, the terminal device determines the target COT shared information from the N COT shared information based on the first information, including: The terminal device determines the first COT shared information among the N COT shared information as the target COT shared information; Wherein, the priority of the side data to be transmitted is higher than or equal to the priority of the first priority information, and the priority of the first priority information is determined based on the first COT shared information.

6. The method as described in claim 5, characterized in that, The first priority information is obtained by the terminal device based on the first COT shared information.

7. The method as described in claim 5, characterized in that, The priority corresponding to the first priority information includes the priority threshold value.

8. The method as described in claim 5, characterized in that, The first priority information corresponds to the channel access priority information.

9. The method as described in claim 4, characterized in that, When the first information includes at least the identification information of the terminal device, the terminal device determines the target COT shared information from the N COT shared information based on the first information, including: The terminal device determines the second COT shared information among the N COT shared information as the target COT shared information; The second COT shared information includes target identification information, or the sideline control information (SCI) sent simultaneously with the second COT shared information includes target identification information, and the identifier corresponding to the target identification information includes the identifier of the terminal device.

10. The method as described in claim 9, characterized in that, The target identification information includes terminal identification information that allows the use of the second COT shared information; or... The target identification information includes identification information of terminal groups that are permitted to use the second COT shared information.

11. The method as described in claim 4, characterized in that, When the first information includes at least the resource block set information determined by the terminal device, the terminal device determines the target COT shared information from the N COT shared information based on the first information, including: The terminal device determines the third COT shared information among the N COT shared information as the target COT shared information; Wherein, the third COT shared information includes target resource block set information, and the resource block set used by the terminal device belongs to the resource block set corresponding to the target resource block set information; or, the resource block set corresponding to the transmission resources of the Physical Side Cross-Line Control Channel (PSCCH) or Physical Side Cross-Line Shared Channel (PSSCH) sent simultaneously with the third COT shared information includes the resource block set used by the terminal device.

12. A terminal device, characterized in that, include: The communication unit is used to acquire shared information on the occupancy time (COT) of N channels, where N is a positive integer. A processing unit is configured to determine the target COT shared information from the N COT shared information; The processing unit is also used to perform channel access based on the parameters corresponding to the target COT shared information.

13. The terminal device as described in claim 12, characterized in that, The shared information of the N COTs is provided by other terminals.

14. The terminal device as described in claim 12 or 13, characterized in that, The COT shared information in the N COT shared information sets carries at least one of the following information: Resource block set information, COT duration information, priority information, and target identifier information.

15. The terminal device as described in claim 12 or 13, characterized in that, The processing unit is specifically used for: The target COT shared information is determined from the N COT shared information based on the first information; The first information includes at least one of the following: The priority information corresponding to the data to be transmitted on the terminal device, the identification information of the terminal device, and the resource block set information determined by the terminal device.

16. The terminal device as described in claim 15, characterized in that, When the first information includes at least the priority information corresponding to the line data to be transmitted, the processing unit is specifically used for: The first COT shared information among the N COT shared information is determined as the target COT shared information; Wherein, the priority of the side data to be transmitted is higher than or equal to the priority of the first priority information, and the priority of the first priority information is determined based on the first COT shared information.

17. The terminal device as described in claim 16, characterized in that, The first priority information is obtained by the terminal device based on the first COT shared information.

18. The terminal device as described in claim 16, characterized in that, The priority corresponding to the first priority information includes the priority threshold value.

19. The terminal device as described in claim 16, characterized in that, The first priority information corresponds to the channel access priority information.

20. The terminal device as described in claim 15, characterized in that, When the first information includes at least the identification information of the terminal device, the processing unit is specifically used for: The second COT shared information among the N COT shared information is determined as the target COT shared information; The second COT shared information includes target identification information, or the sideline control information (SCI) sent simultaneously with the second COT shared information includes target identification information, and the identifier corresponding to the target identification information includes the identifier of the terminal device.

21. The terminal device as described in claim 20, characterized in that, The target identification information includes terminal identification information that allows the use of the second COT shared information; or... The target identification information includes identification information of terminal groups that are permitted to use the second COT shared information.

22. The terminal device as described in claim 15, characterized in that, When the first information includes at least the resource block set information determined by the terminal device, the processing unit is specifically used for: The third COT shared information among the N COT shared information is determined as the target COT shared information; Wherein, the third COT shared information includes target resource block set information, and the resource block set used by the terminal device belongs to the resource block set corresponding to the target resource block set information; or, the resource block set corresponding to the transmission resources of the Physical Side Cross-Line Control Channel (PSCCH) or Physical Side Cross-Line Shared Channel (PSSCH) sent simultaneously with the third COT shared information includes the resource block set used by the terminal device.

23. A terminal device, characterized in that, include: A processor and a memory for storing a computer program, the processor for calling and running the computer program stored in the memory to perform the method as described in any one of claims 1 to 11.

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