Wireless communication method, terminal device and network device

Abstract

The embodiment of the invention provides a wireless communication method, terminal equipment and network equipment. The method comprises: a terminal device determining a first periodic channel occupancy, the first periodic channel occupancy comprising a channel occupancy for the terminal device to initiate channel occupancy time (COT), the first periodic channel occupancy comprising a first channel occupancy; and the terminal device determines a channel access mode corresponding to first uplink transmission, a starting position occupied by the first channel is the same as a starting position of a first time domain resource, and the first time domain resource is a resource used by the terminal device for transmitting the first uplink transmission. By determining the channel access mode corresponding to the first uplink transmission, the COT initiated by the network equipment and the COT initiated by the terminal equipment can reasonably coexist on the unlicensed spectrum, so that the system performance is improved.

Description

[0001] This application is a divisional application of the invention patent application with application number 202080105320.7 filed on October 23, 2020 and invention name “Wireless Communication Method, Terminal Equipment and Network Equipment”. Technical Field

[0002] The embodiments of the present application relate to the field of communications, and more specifically, to a wireless communication method, a terminal device, and a network device. Background Art

[0003] In the New Radio-based access to unlicensed spectrum (NR-U) system, the spectrum used is shared spectrum. In the communication system deployed on the shared spectrum, such as the NR-U system, the Channel Occupancy Time (COT) initiated by the terminal device is introduced in the frame-based equipment (FBE) mode. However, in this case, how to transmit signals / channels to ensure the reasonable coexistence of COT initiated by the network equipment and COT initiated by the terminal device on the unlicensed spectrum is an urgent problem to be solved. Summary of the invention

[0004] The embodiments of the present application provide a wireless communication method, a terminal device, and a network device, which can enable the COT initiated by the network device and the COT initiated by the terminal device to reasonably coexist on the unlicensed spectrum to improve system performance.

[0005] In a first aspect, a wireless communication method is provided, comprising:

[0006] The terminal device determines a first period channel occupancy, where the first period channel occupancy includes a channel occupancy for the terminal device to initiate a channel occupancy time COT, and the first period channel occupancy includes a first channel occupancy;

[0007] The terminal device determines a channel access method corresponding to a first uplink transmission, the starting position occupied by the first channel is the same as the starting position of a first time domain resource, and the first time domain resource is a resource used by the terminal device to transmit the first uplink transmission.

[0008] In a second aspect, a wireless communication method is provided, including:

[0009] The network device sends first downlink control information DCI to the terminal device, where the first DCI is used by the terminal device to determine a channel access method corresponding to a first uplink transmission; and the first DCI is used to schedule the first uplink transmission.

[0010] In a third aspect, a terminal device is provided, which is used to execute the method in the first aspect or its implementations. Specifically, the terminal device includes a functional module for executing the method in the first aspect or its implementations.

[0011] In a fourth aspect, a network device is provided, which is used to execute the method in the second aspect or its respective implementations. Specifically, the network device includes a functional module used to execute the method in the second aspect or its respective implementations.

[0012] In a fifth aspect, a terminal device is provided, comprising a processor and a memory, wherein 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 execute the method in the first aspect or its implementation manners.

[0013] In a sixth aspect, a network device is provided, comprising a processor and a memory, wherein 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 execute the method in the second aspect or its implementation manners.

[0014] In a seventh aspect, a chip is provided for implementing the method in any one of the first to second aspects or their respective implementations. Specifically, the chip includes: a processor for calling and running a computer program from a memory, so that a device equipped with the chip executes the method in any one of the first to second aspects or their respective implementations.

[0015] In an eighth aspect, a computer-readable storage medium is provided for storing a computer program, wherein the computer program enables a computer to execute the method of any one of the first to second aspects or any of their implementations.

[0016] In a ninth aspect, a computer program product is provided, comprising computer program instructions, wherein the computer program instructions enable a computer to execute the method in any one of the first to second aspects above or in each of their implementations.

[0017] In a tenth aspect, a computer program is provided, which, when executed on a computer, enables the computer to execute the method in any one of the first to second aspects or in each of their implementations.

[0018] Based on the above technical solution, after the terminal device determines the occupancy of the first period channel, it can determine the channel access method corresponding to the first uplink transmission, which is equivalent to that the terminal device can determine the LBT method corresponding to the first uplink transmission. For example, the UE performs LBT in the form of a COT sharing the network device or initiating a COT. This can avoid conflicts between the COT initiated by the network device and the COT initiated by the terminal device on the unlicensed spectrum, that is, it can enable the COT initiated by the network device and the COT initiated by the terminal device to coexist reasonably on the unlicensed spectrum, thereby improving communication performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of a communication system architecture applied in an embodiment of the present application.

[0020] Figure 2 It is a schematic diagram of semi-static channel occupancy provided by this application.

[0021] Figure 3 It is a schematic flowchart of the wireless communication method provided in an embodiment of the present application.

[0022] Figures 4 to 6 It is a schematic timing diagram of channel occupancy provided in an embodiment of the present application.

[0023] Figure 7 It is a schematic flowchart of the wireless communication method provided in an embodiment of the present application.

[0024] Figure 8 It is a schematic block diagram of a terminal device provided in an embodiment of the present application.

[0025] Fig. 9 It is a schematic block diagram of a network device provided in an embodiment of the present application.

[0026] Fig.10 It is a schematic block diagram of a communication device provided in an embodiment of the present application.

[0027] Fig.11 It is a schematic block diagram of the chip provided in the embodiment of the present application. Specific embodiments

[0028] The technical solutions in the embodiments of the present application will be described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. For the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.

[0029] The technical solutions of the embodiments of the present application 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, NR system evolution system, LTE on unlicensed spectrum (LTE-U) system, NR on unlicensed spectrum (NR-U) system, Non-Terrestrial Networks (NTN) system, Universal Mobile Telecommunication System (UMTS), Wireless Local Area Networks (WLAN), Wireless Fidelity (Wireless Fidelity) system. Fidelity, WiFi), fifth-generation communication (5th-Generation, 5G) system or other communication systems, etc.

[0030] Generally speaking, traditional communication systems 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 communications, but will also support, for example, device to device (Device to Device, D2D) communication, machine to machine (Machine to Machine, M2M) communication, machine type communication (Machine Type Communication, MTC), vehicle to vehicle (V2V) communication, or vehicle to everything (V2X) communication, etc. The embodiments of the present application can also be applied to these communication systems.

[0031] Optionally, the communication system in the embodiment of the present application can be applied to a carrier aggregation (CA) scenario, a dual connectivity (DC) scenario, or a standalone (SA) networking scenario.

[0032] Optionally, the communication system in the embodiment of the present application can be applied to an unlicensed spectrum, wherein the unlicensed spectrum can also be considered as a shared spectrum; or, the communication system in the embodiment of the present application can also be applied to an authorized spectrum, wherein the authorized spectrum can also be considered as an unshared spectrum.

[0033] The embodiments of the present application describe various embodiments in conjunction with network devices and terminal devices, wherein 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.

[0034] The terminal device can be a station (STATION, ST) in a WLAN, a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA) device, a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a next-generation communication system such as an NR network, or a terminal device in a future evolved Public Land Mobile Network (PLMN) network, etc.

[0035] In the embodiments of the present application, the terminal device can be deployed on land, including indoors or outdoors, handheld, wearable or vehicle-mounted; it can also be deployed on the water surface (such as ships, etc.); it can also be deployed in the air (for example, on airplanes, balloons and satellites, etc.).

[0036] In the embodiment of the present application, the terminal device can be a mobile phone, a tablet computer, a computer with wireless transceiver function, 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, a wireless terminal device in a smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city, or a wireless terminal device in a smart home, etc.

[0037] As an example but not limitation, in the embodiments of the present application, the terminal device may also be a wearable device. Wearable devices may also be referred to as wearable smart devices, which are a general term for wearable devices that are intelligently designed and developed using wearable technology for daily wear, such as glasses, gloves, watches, clothing, and shoes. A wearable device is a portable device that is worn directly on the body or integrated into the user's clothes or accessories. Wearable devices are not only hardware devices, but also powerful functions achieved through software support, data interaction, and cloud interaction. Broadly speaking, wearable smart devices include full-featured, large-sized, and fully or partially independent of smartphones, such as smart watches or smart glasses, as well as devices that only focus on a certain type of application function and need to be used in conjunction with other devices such as smartphones, such as various types of smart bracelets and smart jewelry for vital sign monitoring.

[0038] In an embodiment of the present application, the network device may be a device for communicating with a mobile device. The network device may be an access point (AP) in WLAN, a base station (Base Transceiver Station, BTS) in GSM or CDMA, a base station (NodeB, NB) in WCDMA, an evolved base station (EvolutionalNode B, eNB or eNodeB) in LTE, or a relay station or access point, or a vehicle-mounted device, a wearable device, and a network device or base station (gNB) in an NR network, or a network device in a future evolved PLMN network, or a network device in an NTN network, etc.

[0039] As an example but not limitation, in an embodiment of the present application, the network device may have a mobile characteristic, 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 set up in a location such as land or water.

[0040] In an embodiment of the present application, the network device can provide services for a cell, and the terminal device communicates with the network device through the transmission resources used by the cell (for example, frequency domain resources, or spectrum resources). The cell can be a cell corresponding to the network device (for example, a base station), and the cell can belong to a macro base station or a base station corresponding to a small cell. The small cells here may include: metro cells, micro cells, pico cells, femto cells, etc. These small cells have the characteristics of small coverage and low transmission power, and are suitable for providing high-speed data transmission services.

[0041] For example, the communication system 100 used in the embodiment of the present application is as follows: Figure 1 The communication system 100 may include a network device 110, which may be a device that communicates with a terminal device 120 (or a communication terminal or terminal). The network device 110 may provide communication coverage for a specific geographical area and may communicate with terminal devices located in the coverage area.

[0042] Figure 1 One network device and two terminal devices are shown exemplarily. Optionally, the communication system 100 may include multiple network devices and each network device may include another number of terminal devices within its coverage area, which is not limited in the embodiments of the present application.

[0043] Optionally, the communication system 100 may also include other network entities such as a network controller and a mobility management entity, which is not limited in the embodiments of the present application.

[0044] It should be understood that the device with communication function in the network / system in the embodiment of the present application can be referred to as a communication device. Figure 1Taking the communication system 100 shown as an example, the communication equipment may include a network device 110 and a terminal device 120 with communication functions. The network device 110 and the terminal device 120 may be the specific devices described above and will not be repeated here. The communication equipment may also include other devices in the communication system 100, such as a network controller, a mobile management entity and other network entities, which is not limited in the embodiments of the present application.

[0045] It should be understood that the terms "system" and "network" are often used interchangeably in this article. The term "and / or" in this article is only a description of the association relationship of associated objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0046] The terms used in the implementation mode of this application are only used to explain the specific embodiments of this application, and are not intended to limit this application. The terms "first", "second", "third" and "fourth" in the specification and claims of this application and the drawings are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0047] It should be understood that the "indication" mentioned in the embodiments of the present application can be a direct indication, an indirect indication, or an indication of an association relationship. For example, A indicates B, which can mean that A directly indicates B, for example, B can be obtained through A; it can also mean that A indirectly indicates B, for example, A indicates C, and B can be obtained through C; it can also mean that there is an association relationship between A and B.

[0048] In the description of the embodiments of the present application, the term "corresponding" may indicate a direct or indirect correspondence between two items, or an association relationship between the two items, or a relationship between indication and being indicated, configuration and being configured, and the like.

[0049] Optionally, in an embodiment of the present application, the indication information or configuration information includes at least one of physical layer signaling such as downlink control information (DCI), system information (SI), radio resource control (RRC) signaling and media access control control element (MAC CE).

[0050] Optionally, in an embodiment of the present application, the high-level parameters or high-level signaling include at least one of radio resource control RRC signaling and media access control unit MAC CE.

[0051] Optionally, in the embodiment of the present application, "preset" can be implemented by pre-saving corresponding codes, tables or other methods that can be used to indicate relevant information in a device (for example, including a terminal device and a network device), and the present application does not limit the specific implementation method. For example, the preset can refer to the definition in the protocol.

[0052] Optionally, in an embodiment of the present application, the "protocol" may refer to a standard protocol in the communication field, for example, it may include an LTE protocol, an NR protocol, and related protocols used in future communication systems, which is not limited in the present application.

[0053] Unlicensed spectrum is the spectrum allocated by countries and regions that can be used for radio equipment communications. This spectrum is generally considered to be a shared spectrum, that is, as long as communication equipment in different communication systems meets the regulatory requirements set by the country or region on the spectrum, they can use the spectrum without applying for exclusive spectrum authorization from the government.

[0054] In order to allow various communication systems that use unlicensed spectrum (also called shared spectrum) for wireless communication to coexist in a friendly manner on the spectrum, some countries or regions have stipulated regulatory requirements that must be met when using unlicensed spectrum. For example, communication equipment follows the "Listen Before Talk (LBT)" principle, that is, before a communication device sends a signal on a channel of the unlicensed spectrum, it needs to first perform channel sensing (also called channel detection). Only when the channel sensing result is that the channel is idle can the communication device send a signal; if the channel sensing result of the communication device on the channel of the unlicensed spectrum is that the channel is busy, the communication device cannot send a signal. In order to ensure fairness, in one transmission, the duration that a communication device uses a channel of the unlicensed spectrum for signal transmission cannot exceed the maximum channel occupancy time (MCOT).

[0055] In the unlicensed spectrum, the network equipment needs to perform LBT before sending the downlink channel or downlink signal. Only when LBT succeeds can the transmission be carried out, otherwise the transmission cannot be carried out. Therefore, the communication in the unlicensed spectrum is an opportunistic transmission. From the perspective of system layout, channel detection includes two mechanisms. One is LBT based on load equipment (LBE), also known as dynamic channel detection, dynamic channel access or dynamic channel occupancy. The other is LBT based on frame structure equipment (FBE), also known as semi-static channel detection, semi-static channel access, semi-static channel occupancy or periodic channel occupancy.

[0056] In the channel access mechanism of FBE, or in other words, in the semi-static channel access mode, the frame structure appears periodically, that is, the channel resources that the communication device can use for service transmission appear periodically. A frame structure includes a fixed frame period (FFP), a channel occupancy time (COT), and an idle period (IP). Among them, the length of FFP can range from 1 to 10ms, for example, the length of the channel occupancy time COT does not exceed 95% of the length of the fixed frame period FFP, the length of the idle period IP is at least 5% of the length of the fixed frame period FFP, and the minimum value of IP is 100μs, and it is located at the end of the fixed frame period FFP.

[0057] The communication device performs channel detection on the channel during the idle period to evaluate the channel availability (sensing forevaluating a channel availability, also known as idle channel assessment CCA). If the channel detection is successful, the channel occupancy time (COT) in the next fixed frame period can be used for signal transmission; if the channel detection fails, the channel occupancy time in the next fixed frame period cannot be used for signal transmission.

[0058] Currently in the NR-U system, only COT initiated by the network device is supported in FBE mode. The semi-static channel access mode can be indicated by the base station through the system information block (SIB) 1 or configured through high-level parameters.

[0059] Figure 2 It is a schematic diagram of semi-static channel occupancy provided by the present application.

[0060] like Figure 2 As shown, the length of the fixed frame period (FFP) is Tx , T x Can be configured by the base station, T x The unit is ms, T x The value range may include, for example, 1, 2, 2.5, 4, 5, and 10. Starting from every two consecutive radio frames, within every two consecutive radio frames, the value of x·T may be x Determine the starting position of the FFP, where x∈{0,1,…,20 / T x -1}, the maximum COT length in FFP can be T y =0.95·T x , the idle period length within FFP can be at least T z =max(0.05·T x , 100μs).

[0061] If a serving cell is configured as a semi-static channel access mode, the periodic channel occupancy length (or channel occupancy period) of the serving cell is T x The maximum channel occupancy length included in the periodic channel occupancy length of the service cell is T y The length of the idle period included in the periodic channel occupancy length of the serving cell is T z The terminal device can be configured according to the T x Determine T y and / or T z For example, as described above, the terminal device determines the length T of the FFP x After that, the starting position of the FFP, the period of the FFP, the maximum COT length for signal transmission in the FFP, the idle period for channel detection in the FFP and other information can be determined according to the preset rules.

[0062] In the FBE-based NR-U system, when the UE is scheduled to perform uplink transmission within the FFP of the base station, the UE can transmit in the COT mode of the shared network equipment.

[0063] The following is an introduction to the COT solution for sharing network equipment.

[0064] When the UE detects a downlink transmission opportunity sent by the base station within the COT, the UE can share the resources within the COT of the base station to send an uplink transmission opportunity. In this case, the UE's channel detection method includes:

[0065] 1. If the gap between the uplink transmission opportunity and the downlink transmission opportunity does not exceed 16 microseconds, the UE may start sending the uplink transmission opportunity without performing channel detection after the downlink transmission opportunity ends;

[0066] 2. If the gap between the uplink transmission opportunity and the downlink transmission opportunity exceeds 16 microseconds, the UE performs a channel detection with a detection slot length of 9 microseconds within an interval of 25 microseconds before the start of the uplink transmission opportunity, and sends the uplink transmission opportunity after the channel detection is successful.

[0067] Specifically, in FBE mode, when the terminal device is scheduled to transmit PUSCH or PUCCH, the network device can indicate the channel access method corresponding to the PUSCH or PUCCH and the size of the extended cyclic prefix (CPE) during UE transmission through the channel access indication information in the downlink control information DCI carrying the uplink grant (UL grant) or downlink grant (DL grant).

[0068] In some embodiments of the present application, the downlink control information DCI carrying the uplink grant (UL grant) or the downlink grant (DL grant) may include the following:

[0069] Non-fallback uplink grant for scheduling PUSCH transmission (e.g. DCI format 0_1):

[0070] Optionally, the high-level parameter configures a first indication set, where the first indication set includes at least one jointly coded channel access type, CPE length, and CAPC.

[0071] Optionally, the non-fallback uplink authorization includes channel access indication information, and the channel access indication information is used to determine the jointly coded channel access type, CPE length and CAPC from the above-mentioned first indication set.

[0072] Optionally, the channel access type, CPE length and CAPC may be used for PUSCH transmission.

[0073] Optionally, in this case, the channel access indication information includes a maximum of 6 bits.

[0074] Non-fallback downlink grant for scheduling PDSCH transmission (e.g. DCI format 1_1):

[0075] Optionally, the high-level parameter configures a second indication set, where the second indication set includes at least one jointly coded channel access type and CPE length.

[0076] Optionally, the non-fallback downlink authorization includes channel access indication information, and the channel access indication information is used to determine the jointly coded channel access type and CPE length from the above-mentioned second indication set.

[0077] Optionally, the channel access type and CPE length may be used for PUCCH transmission, wherein the PUCCH may carry HARQ-ACK information corresponding to the PDSCH scheduled by the non-fallback downlink grant. Optionally, CAPC=1.

[0078] Optionally, in this case, the channel access indication information includes a maximum of 4 bits.

[0079] Fallback uplink grant for scheduling PUSCH transmission (e.g. DCI format 0_0):

[0080] Optionally, the fallback uplink authorization includes channel access indication information, and the channel access indication information is used to determine the jointly coded channel access type and CPE length from a third indication set.

[0081] Optionally, the third indication set is preset, as shown in Table 1 and Table 2 below.

[0082] Optionally, the channel access type and CPE length may be used for PUSCH transmission. Optionally, the terminal device selects the CAPC according to the service priority.

[0083] Optionally, in this case, the channel access indication information includes 2 bits.

[0084] Fallback downlink grant for scheduling PDSCH transmission (e.g. DCI format 1_0):

[0085] Optionally, the fallback downlink authorization includes channel access indication information, and the channel access indication information is used to determine the jointly coded channel access type and CPE length from a third indication set.

[0086] Optionally, the third indication set is preset, as shown in Table 1 and Table 2 below.

[0087] Optionally, the channel access type and CPE length may be used for PUCCH transmission, wherein the PUCCH may carry HARQ-ACK information corresponding to the PDSCH scheduled by the fallback downlink grant. Optionally, CAPC=1.

[0088] Optionally, in this case, the channel access indication information includes 2 bits.

[0089] Table 1 The third indication set

[0090]

[0091] As shown in Table 1, if the channel access indication information indicates 0, the channel access type is Type 2C, and the CPE length is determined according to the CPE length corresponding to 2 in Table 2, that is, the CPE length is determined according to C2 and 16 microseconds + T TAOptionally, the CPE length is determined according to Table 2 and includes: CPE length = Ci*symbol length-Δi. As an example, in this case, the CPE length is C2*symbol length-16 microseconds-T TA In this case, it can be considered that the CPE length corresponds to 16 microseconds.

[0092] Table 2 CPE parameters

[0093] CPE length Ci Δi 0 - - 1 C1 25 microseconds 2 C2 <![CDATA[16 microseconds + T TA > 3 C3 <![CDATA[25 microseconds + T TA >

[0094] The values ​​of C2 and C3 are configured by high-level parameters, and the value of C1 is preset, C1=1forμ∈{0,1}, C1=2forμ=2. μ represents the subcarrier spacing configuration, and μ=0, 1, and 2 represent 15kHz, 30kHz, and 60kHz, respectively.

[0095] As an example, in a system based on FBE mode, if the terminal device receives channel access indication information indicating Type 2A channel access or receives channel access indication information indicating Type 1 channel access, the channel detection method of the terminal device is: the terminal device performs a channel detection with a detection time slot length of 9 microseconds within an interval of 25 microseconds before the start of the uplink transmission opportunity.

[0096] As the system evolves, terminal devices are also allowed to initiate COT in FBE mode.

[0097] For example, the channel detection methods for the terminal device to initiate COT include:

[0098] The terminal device performs a channel detection with a detection time slot length of 9 microseconds before the uplink transmission opportunity or FFP starts, and sends the uplink transmission opportunity from the start position of COT after the channel detection is successful. If the channel detection fails, the terminal device cannot perform any uplink transmission in the current uplink transmission opportunity.

[0099] However, in this case, how to transmit signals / channels to ensure reasonable coexistence of COT initiated by network devices and COT initiated by terminal devices in the unlicensed spectrum is an urgent problem to be solved.

[0100] For example, when a terminal device is scheduled for uplink transmission, where the uplink transmission is located at the starting position of a channel occupancy (an FFP) in a periodic channel occupancy (FFP configuration) configured by the terminal device for initiating channel occupancy by the terminal device, how the terminal device determines the LBT mode corresponding to the uplink transmission, for example, whether the terminal device performs LBT in the COT mode of a shared network device or in the mode of initiating COT by the terminal device, is the main issue considered in the present application.

[0101] The present application provides a wireless communication method, a terminal device and a network device, which can enable the COT initiated by the network device and the COT initiated by the terminal device to reasonably coexist on an unlicensed spectrum to improve system performance.

[0102] To facilitate the understanding of this application, the terms involved in this application are explained below.

[0103] Maximum Channel Occupancy Time (MCOT): refers to the maximum length of time allowed to use the channel for signal transmission after channel sensing is successful on a shared spectrum channel.

[0104] Channel Occupancy Time (COT): refers to the length of time that a channel is used for signal transmission after successful channel detection on a shared spectrum channel. It can also be considered as the length of time that the channel is occupied after successful channel detection on a shared spectrum channel. The signal occupation of the channel during this time length can be continuous or discontinuous, and this time length includes the total time for signal transmission by the device initiating channel occupation and the device sharing the channel occupation.

[0105] gNB / eNB-initiated COT: also called COT initiated by network devices or channel occupancy initiated by network devices, it refers to the channel occupancy time obtained by network devices after successful channel detection on a shared spectrum channel. In addition to being used for network device transmission, COT initiated by network devices can also be used for terminal device transmission under certain conditions.

[0106] UE-initiated COT: Also known as COT initiated by the UE or channel occupancy initiated by the UE, it refers to the channel occupancy time obtained by the UE after successful channel detection on a channel in the shared spectrum. In addition to being used for transmission by the UE, the COT initiated by the UE can also be used for transmission by network devices under certain conditions.

[0107] DL transmission burst: A group of downlink transmissions (i.e., including one or more downlink transmissions) performed by a network device, which is a continuous transmission (i.e., there is no gap between multiple downlink transmissions), or there is a gap in the group of downlink transmissions but the gap is less than or equal to 16μs. If the gap between two downlink transmissions performed by the network device is greater than 16μs, then the two downlink transmissions are considered to belong to two downlink transmission opportunities.

[0108] UL transmission burst: A group of uplink transmissions (i.e., including one or more uplink transmissions) performed by a terminal device, which is a continuous transmission (i.e., there is no gap between multiple uplink transmissions), or there is a gap in the group of uplink transmissions but the gap is less than or equal to 16μs. If the gap between two uplink transmissions performed by the terminal device is greater than 16μs, then the two uplink transmissions are considered to belong to two uplink transmission opportunities.

[0109] Channel detection success: also called channel detection idleness. For example, the energy detected in the channel detection time slot is lower than the energy detection threshold.

[0110] Channel detection failure: also called channel detection busy. For example, the energy detection in the channel detection time slot is higher than or equal to the energy detection threshold.

[0111] Figure 3 A schematic flow chart of a wireless communication method 200 according to an embodiment of the present application is shown, and the method 200 can be executed by a terminal device. For example, Figure 1 The terminal equipment shown.

[0112] like Figure 3 As shown, the method 200 may include:

[0113] S210, the terminal device determines a first periodic channel occupancy, where the first periodic channel occupancy includes a channel occupancy for the terminal device to initiate a channel occupancy time COT, and the first periodic channel occupancy includes a first channel occupancy;

[0114] S220, the terminal device determines a channel access method corresponding to a first uplink transmission, the starting position occupied by the first channel is the same as the starting position of a first time domain resource, and the first time domain resource is a resource used by the terminal device to transmit the first uplink transmission.

[0115] In other words, if the terminal device is configured with a first periodic channel occupancy by the network device, the first periodic channel occupancy is used by the terminal device to initiate COT. In this case, when the terminal device is scheduled to transmit the first uplink transmission from the starting position of the first channel occupancy in the first periodic channel occupancy, it is necessary to determine whether to perform LBT using the COT method of the shared network device or using the COT method initiated by the terminal device.

[0116] Based on the above technical solution, after the terminal device determines the occupancy of the first period channel, it can determine the channel access method corresponding to the first uplink transmission, which is equivalent to that the terminal device can determine the LBT method corresponding to the first uplink transmission. For example, the UE performs LBT in the form of a COT sharing the network device or initiating a COT. This can avoid conflicts between the COT initiated by the network device and the COT initiated by the terminal device on the unlicensed spectrum, that is, it can enable the COT initiated by the network device and the COT initiated by the terminal device to coexist reasonably on the unlicensed spectrum, thereby improving communication performance.

[0117] Optionally, the first periodic channel occupancy refers to a configured periodic FFP, and the first channel occupancy refers to a certain FFP in the configured periodic FFPs.

[0118] Optionally, the first channel occupancy is the channel occupancy configured by the terminal device for the terminal device to initiate COT.

[0119] Optionally, the first channel occupancy includes a first COT and a first IP, and a starting position of the first COT is the same as a starting position of the first time domain resource.

[0120] Optionally, the terminal device determines a second channel occupancy, where the second channel occupancy is used by the network device to initiate channel occupancy, and the second channel occupancy includes a second COT and a second IP.

[0121] Optionally, the first uplink transmission is the first uplink transmission in a first uplink transmission opportunity. Optionally, the first uplink transmission opportunity includes one or more uplink transmissions.

[0122] In some embodiments of the present application, the channel access method corresponding to the first uplink transmission includes a first channel access method and / or a second channel access method.

[0123] Optionally, the first channel access method includes a channel access method in which the terminal device initiates COT.

[0124] Optionally, the first channel access method includes a channel access method in which the terminal device initiates channel occupancy.

[0125] Optionally, the first channel access method includes performing channel detection with a fixed detection time slot length.

[0126] Optionally, the detection time slot length is fixed to 9 microseconds.

[0127] As an example, the first channel access method includes: the terminal device performs a channel detection with a fixed detection time slot length of 9 microseconds before the first time domain resource; if the channel detection is successful, the terminal device sends the first uplink transmission through the first time domain resource; if the channel detection fails, the terminal device does not send the first uplink transmission through the first time domain resource.

[0128] As another example, the first channel access method includes: the terminal device performs a channel detection with a detection time slot length of 9 microseconds before the starting position of the first channel occupation, and after the channel detection is successful, sends a first uplink transmission opportunity from the starting position of the first channel occupation, and the first uplink transmission opportunity includes the first uplink transmission. If the channel detection fails, the terminal device cannot perform any uplink transmission during the occupation of the first channel.

[0129] As another example, the first channel access method includes: the terminal device performs a channel detection with a detection time slot length of 9 microseconds before the starting position of the first COT, and sends a first uplink transmission opportunity from the starting position of the first COT after the channel detection is successful, and the first uplink transmission opportunity includes the first uplink transmission. If the channel detection fails, the terminal device cannot perform any uplink transmission while the first channel is occupied.

[0130] Optionally, if the terminal device is configured with a COT shared energy detection threshold, the terminal device uses the COT shared energy detection threshold to perform channel detection in the first channel access mode.

[0131] Optionally, the second channel access method includes a COT channel access method of a shared network device.

[0132] Optionally, the second channel access mode includes a first channel access sub-mode and / or a second channel access sub-mode, wherein the first channel access sub-mode includes not performing channel detection, and the second channel access sub-mode includes performing channel detection with a fixed detection time slot length within a fixed interval.

[0133] Optionally, the detection time slot length is fixed to 9 microseconds.

[0134] Optionally, the fixed interval length is 25 microseconds.

[0135] As an example, the first channel access sub-mode includes: if the gap between the first uplink transmission and the first downlink transmission opportunity does not exceed 16 microseconds, the terminal device does not perform channel detection and starts to send the first uplink transmission after the first downlink transmission opportunity ends; as an example, the second channel access sub-mode includes: if the gap between the first uplink transmission and the first downlink transmission opportunity exceeds 16 microseconds, the terminal device performs a channel detection with a fixed detection time slot length of 9 microseconds within a fixed interval of 25 microseconds before the start of transmission of the first uplink transmission, and sends the first uplink transmission after the channel detection is successful; wherein, the first uplink transmission and the first downlink transmission opportunity belong to the same COT of the network device.

[0136] It should be noted that, in the embodiment of the present application, the first COT and the COT initiated by the terminal device may completely overlap or partially overlap, and the present application does not make any specific limitation on this.

[0137] Optionally, the first time domain resource is a resource used by the terminal device to transmit the first uplink transmission, wherein the first time domain resource is a resource used for the first uplink transmission scheduled by a network device through a first DCI.

[0138] Optionally, the first time domain resource is a resource used by the terminal device to transmit the first uplink transmission, wherein the first time domain resource is a resource preconfigured by a network device for the first uplink transmission.

[0139] In some embodiments of the present application, the S220 may include:

[0140] The terminal device determines a channel access method corresponding to the first uplink transmission according to first downlink control information (Downlink Control Information, DCI); the first DCI is used to schedule the first uplink transmission.

[0141] Optionally, the terminal device determines the channel access mode corresponding to the first uplink transmission according to the channel access indication information in the first DCI.

[0142] Optionally, the channel access indication information indicates an extended cyclic prefix CPE length. If the CPE length indicated by the channel access indication information is a first preset value or corresponds to a first preset value, the terminal device determines that the channel access method corresponding to the first uplink transmission is a first channel access method; or, if the CPE length indicated by the channel access indication information is not the first preset value or does not correspond to the first preset value, the terminal device determines that the channel access method corresponding to the first uplink transmission is a second channel access method.

[0143] Optionally, the first preset value is 0.

[0144] As an example, when the CPE length indicated by the channel access indication information is 0, the terminal device determines that the channel access method corresponding to the first uplink transmission is the first channel access method; or, when the CPE length indicated by the channel access indication information is not 0, the terminal device determines that the channel access method corresponding to the first uplink transmission is the second channel access method.

[0145] Optionally, the first preset value is 25 microseconds.

[0146] As an example, when the CPE length indicated by the channel access indication information corresponds to 25 microseconds, the terminal device determines that the channel access method corresponding to the first uplink transmission is the first channel access method; or, when the CPE length indicated by the channel access indication information does not correspond to 25 microseconds, the terminal device determines that the channel access method corresponding to the first uplink transmission is the second channel access method.

[0147] Optionally, the channel access indication information also indicates a channel access type. When the CPE length indicated by the channel access indication information is not the first preset value or does not correspond to the first preset value, if the channel access type indicated by the channel access indication information is type 2C or type 2B, the terminal device determines that the channel access method corresponding to the first uplink transmission is the first channel access sub-method in the second channel access method; or, if the channel access type indicated by the channel access indication information is type 2A or type 1, the terminal device determines that the channel access method corresponding to the first uplink transmission is the second channel access sub-method in the second channel access method.

[0148] Optionally, the first preset value is 0.

[0149] As an example, if the channel access indication information received by the terminal device indicates "3" in Table 1 (the CPE length indication is 0), the terminal device determines that the channel access mode corresponding to the first uplink transmission is the first channel access mode; or, if the channel access indication information received by the terminal device indicates "0", "1" or "2" in Table 1 (the CPE length indication is not 0), the terminal device determines that the channel access mode corresponding to the first uplink transmission is the second channel access mode. Further, if the channel access indication information received by the terminal device indicates "0" in Table 1, the terminal device determines that the channel access mode corresponding to the first uplink transmission is the first channel access sub-mode; or, if the channel access indication information received by the terminal device indicates "1" or "2" in Table 1, the terminal device determines that the channel access mode corresponding to the first uplink transmission is the second channel access sub-mode.

[0150] Optionally, the first preset value is 25 microseconds.

[0151] As an example, if the channel access indication information received by the terminal device indicates "1" or "2" (the CPE length indication corresponds to 25 microseconds) in Table 1, the terminal device determines that the channel access mode corresponding to the first uplink transmission is the first channel access mode; or, if the channel access indication information received by the terminal device indicates "0" or "3" (the CPE length indication does not correspond to 25 microseconds) in Table 1, the terminal device determines that the channel access mode corresponding to the first uplink transmission is the second channel access mode. Further, if the channel access indication information received by the terminal device indicates "0" in Table 1, the terminal device determines that the channel access mode corresponding to the first uplink transmission is the first channel access sub-mode; or, if the channel access indication information received by the terminal device indicates "3" in Table 1, the terminal device determines that the channel access mode corresponding to the first uplink transmission is the second channel access sub-mode.

[0152] Optionally, when the starting position of the first time domain resource is different from the starting position of the first COT (or, the starting position of the first time domain resource is different from the starting position of the first channel occupation), the terminal device does not expect the CPE length indicated by the channel access indication information to be 0. Alternatively, when the starting position of the first time domain resource is different from the starting position of the first COT (or, the starting position of the first time domain resource is different from the starting position of the first channel occupation), the terminal device determines that the first uplink transmission corresponds to the second channel access mode, or in other words, the terminal device does not determine the channel access mode according to the CPE length indicated by the channel access indication information.

[0153] Optionally, the channel access indication information indicates a channel access type. If the channel access type indicated by the channel access indication information is a first type, the terminal device determines that the channel access method corresponding to the first uplink transmission is a first channel access method; or, if the channel access type indicated by the channel access indication information is not the first type, the terminal device determines that the channel access method corresponding to the first uplink transmission is a second channel access method.

[0154] Optionally, the channel access indication information also indicates the CPE length. If the channel access type indicated by the channel access indication information is not the first type, if the CPE length indicated by the channel access indication information corresponds to 16 microseconds, the terminal device determines that the channel access method corresponding to the first uplink transmission is the first channel access sub-method in the second channel access method, or, if the CPE length indicated by the channel access indication information does not correspond to 16 microseconds, the terminal device determines that the channel access method corresponding to the first uplink transmission is the second channel access sub-method in the second channel access method.

[0155] Optionally, the first type includes at least one of the following: type 2A, type 2B, type 2C and type 1.

[0156] Optionally, when the channel access type indicated by the channel access indication information is Type 1 channel access, the terminal device determines that the channel access method corresponding to the first uplink transmission is the first channel access method; or, when the channel access type indicated by the channel access indication information is not Type 1 channel access, the terminal device determines that the channel access method corresponding to the first uplink transmission is the second channel access method.

[0157] As an example, if the channel access indication information received by the terminal device indicates "3" (Type 1 channel access) in Table 1, the terminal device determines that the channel access mode corresponding to the first uplink transmission is the first channel access mode; or, if the channel access indication information received by the terminal device indicates "0", "1" or "2" (non-Type 1 channel access) in Table 1, the terminal device determines that the channel access mode corresponding to the first uplink transmission is the second channel access mode. Further, if the channel access indication information received by the terminal device indicates "0" (Type 2C channel access) in Table 1, the terminal device determines that the channel access mode corresponding to the first uplink transmission is the first channel access sub-mode; or, if the channel access indication information received by the terminal device indicates "1" or "2" (Type 2A channel access) in Table 1, the terminal device determines that the channel access mode corresponding to the first uplink transmission is the second channel access sub-mode.

[0158] Optionally, when the channel access type indicated by the channel access indication information is Type2A channel access, the terminal device determines that the channel access method corresponding to the first uplink transmission is the first channel access method; or, when the channel access type indicated by the channel access indication information is not Type2A channel access, the terminal device determines that the channel access method corresponding to the first uplink transmission is the second channel access method.

[0159] As an example, if the channel access indication information received by the terminal device indicates "1" or "2" (Type2A channel access) in Table 1, the terminal device determines that the channel access mode corresponding to the first uplink transmission is the first channel access mode; or, if the channel access indication information received by the terminal device indicates "0" or "3" (non-Type2A channel access) in Table 1, the terminal device determines that the channel access mode corresponding to the first uplink transmission is the second channel access mode. Further, if the channel access indication information received by the terminal device indicates "0" (Type2C channel access) in Table 1, the terminal device determines that the channel access mode corresponding to the first uplink transmission is the first channel access sub-mode; or, if the channel access indication information received by the terminal device indicates "3" (Type1 channel access) in Table 1, the terminal device determines that the channel access mode corresponding to the first uplink transmission is the second channel access sub-mode.

[0160] Optionally, when the channel access type indicated by the channel access indication information is Type2B channel access, the terminal device determines that the channel access method corresponding to the first uplink transmission is the first channel access method; or, when the channel access type indicated by the channel access indication information is not Type2B channel access, the terminal device determines that the channel access method corresponding to the first uplink transmission is the second channel access method.

[0161] Optionally, when the channel access type indicated by the channel access indication information is Type2C channel access, the terminal device determines that the channel access method corresponding to the first uplink transmission is the first channel access method; or, when the channel access type indicated by the channel access indication information is not Type2C channel access, the terminal device determines that the channel access method corresponding to the first uplink transmission is the second channel access method.

[0162] Optionally, if the channel access indication information indicates a second preset value, the terminal device determines that the channel access method corresponding to the first uplink transmission is the first channel access method; or, if the channel access indication information does not indicate the second preset value, the terminal device determines that the channel access method corresponding to the first uplink transmission is the second channel access method.

[0163] As an example, the second preset value is "00". If the channel access indication information indicates "00", the terminal device determines that the channel access mode corresponding to the first uplink transmission is the first channel access mode; or, if the channel access indication information indicates "01", "10" or "11", the terminal device determines that the channel access mode corresponding to the first uplink transmission is the second channel access mode.

[0164] Optionally, if the channel access indication information indicates a second preset value, the terminal device determines that the channel access method corresponding to the first uplink transmission is the first channel access method; or, if the channel access indication information indicates a third preset value, the terminal device determines that the channel access method corresponding to the first uplink transmission is the second channel access method, and the second preset value is different from the third preset value.

[0165] As an example, the second preset value is "00" and the third preset value is "11". If the channel access indication information indicates "00", the terminal device determines that the channel access mode corresponding to the first uplink transmission is the first channel access mode; or, if the channel access indication information indicates "11", the terminal device determines that the channel access mode corresponding to the first uplink transmission is the second channel access mode.

[0166] Optionally, the channel access indication information includes at least one bit, and the at least one bit is used to indicate a channel access mode corresponding to the first uplink transmission.

[0167] Optionally, the at least one bit includes 2 bits.

[0168] In other words, the information field indicated by the channel access indication information in the FBE mode may be redesigned.

[0169] As an example, the channel access indication information includes 2 bits, and the information field indicated is shown in Table 3 below. The terminal device determines the channel access mode corresponding to the first uplink transmission according to the indication of the channel access indication information. It should be understood that Table 3 is a schematic table, and this application does not limit the mapping relationship between the channel access indication information and the channel access type.

[0170] Table 3 The third indication set

[0171] Channel access indication information Channel access type 0 First channel access mode 1 First channel access submode 2 Second channel access sub-mode 3 Reserved Bit

[0172] In some embodiments of the present application, the S220 may include:

[0173] The terminal device determines the channel access method corresponding to the first uplink transmission according to a preset rule.

[0174] Optionally, if the terminal device is configured with a COT shared energy detection threshold, the terminal device determines that the channel access mode corresponding to the first uplink transmission is a first channel access mode; or, if the terminal device is not configured with a COT shared energy detection threshold, the terminal device determines that the channel access mode corresponding to the first uplink transmission is a second channel access mode.

[0175] Optionally, the terminal device determines a channel access mode corresponding to the first uplink transmission based on at least one of the following methods:

[0176] If the first time domain resource is within the second COT of the network device, and the terminal device receives a downlink signal or a downlink channel sent by the network device before the first time domain resource within the second COT, the terminal device determines that the channel access mode corresponding to the first uplink transmission is the second channel access mode;

[0177] If the first time domain resource is within the second COT, and the terminal device does not receive a downlink signal or a downlink channel sent by the network device before the first time domain resource within the second COT, the terminal device determines that the channel access mode corresponding to the first uplink transmission is the first channel access mode;

[0178] If the first time domain resource is not within the COT of the network device, the terminal device determines that the channel access mode corresponding to the first uplink transmission is the first channel access mode;

[0179] If the first DCI is within the second COT, and the first time domain resource is not within the second COT, the terminal device determines that the channel access mode corresponding to the first uplink transmission is the first channel access mode;

[0180] If the first DCI is within the second COT, and the first time domain resource is within the second COT, the terminal device determines that the channel access mode corresponding to the first uplink transmission is the second channel access mode;

[0181] If the first DCI is within the second COT, and the first time domain resource is within the second COT, the terminal device determines the channel access mode corresponding to the first uplink transmission according to the channel access indication information in the first DCI;

[0182] The first DCI is used to schedule the first uplink transmission.

[0183] In some embodiments of the present application, the method 200 may further include:

[0184] The terminal device determines, according to the channel access method corresponding to the first uplink transmission, the extended cyclic prefix CPE length used by the terminal device when sending the first uplink transmission.

[0185] Optionally, if the channel access mode corresponding to the first uplink transmission is the first channel access mode, the terminal device determines that the CPE length used when the terminal device sends the first uplink transmission is 0, or the terminal device determines that the CPE length corresponding to the first uplink transmission is 0.

[0186] Optionally, if the channel access mode corresponding to the first uplink transmission is the first channel access mode, the terminal device ignores the CPE length indicated by the channel access indication information in the first DCI, and the first DCI is used to schedule the first uplink transmission; or, the terminal device expects the CPE length indicated by the channel access indication information in the first DCI to be 0; or, the terminal device does not expect the CPE length indicated by the channel access indication information in the first DCI to be other than 0.

[0187] As an example, if the terminal device determines that the channel access mode corresponding to the first uplink transmission is the first channel access mode, if the CPE length indicated by the channel access indication information in the first DCI received by the terminal device for scheduling the first uplink transmission is not 0, the terminal device can ignore the indicated CPE length information, or the terminal device determines that the CPE length used by the terminal device when sending the first uplink transmission is 0, or the terminal device determines that the CPE length corresponding to the first uplink transmission is 0.

[0188] Optionally, in some embodiments of the present application, the terminal device determines the channel access method corresponding to the first uplink transmission, which can also be considered as the terminal device assuming the channel access method corresponding to the first uplink transmission.

[0189] In some embodiments of the present application, the method 200 may further include:

[0190] If the terminal device is configured with a COT shared energy detection threshold, the terminal device determines whether to perform channel detection based on the COT shared energy detection threshold according to the channel access method corresponding to the first uplink transmission.

[0191] Optionally, if the terminal device is configured with a COT shared energy detection threshold, and the channel access method corresponding to the first uplink transmission is the first channel access method, the terminal device performs channel detection based on the COT shared energy detection threshold.

[0192] Optionally, if the terminal device is configured with a COT shared energy detection threshold, and the channel access method corresponding to the first uplink transmission is the second channel access method; the terminal device performs channel detection based on the COT shared energy detection threshold, or the terminal device does not perform channel detection based on the COT shared energy detection threshold.

[0193] Optionally, the COT shared energy detection threshold is determined according to the transmission power of the network device.

[0194] Optionally, when the starting position of the first time domain resource is different from the starting position of the first COT (or the starting position of the first time domain resource is different from the starting position of the first channel occupancy), the terminal device sends the first uplink transmission according to the CPE length indicated by the channel access indication information in the first DCI.

[0195] Optionally, if the channel access mode corresponding to the first uplink transmission is the first channel access mode, and the terminal device is configured with a COT shared energy detection threshold, the terminal device performs channel detection according to the first channel access mode and the COT shared energy detection threshold.

[0196] Optionally, if the channel access mode corresponding to the first uplink transmission is the second channel access mode, and the terminal device is configured with a COT shared energy detection threshold, the terminal device performs channel detection according to the second channel access mode and the COT shared energy detection threshold. For example, the second channel access mode corresponds to the second channel access sub-mode in the second channel access mode.

[0197] Optionally, if the channel access method corresponding to the first uplink transmission is the second channel access method, and the terminal device is configured with a COT shared energy detection threshold, the terminal device performs channel detection according to the second channel access method and not according to the COT shared energy detection threshold. For example, the second channel access method corresponds to the second channel access sub-method in the second channel access method.

[0198] Optionally, if the channel access mode corresponding to the first uplink transmission is the second channel access mode, and the terminal device is configured with a COT shared energy detection threshold, the terminal device does not perform channel detection according to the COT shared energy detection threshold. For example, the second channel access mode corresponds to the first channel access sub-mode or the second channel access sub-mode in the second channel access mode.

[0199] Optionally, if the terminal device is configured with a COT shared energy detection threshold, the COT shared energy detection threshold is associated with the first channel access mode.

[0200] In some embodiments of the present application, the channel access method corresponding to the first uplink transmission is also used to determine whether downlink transmission can be performed based on resources in a first channel occupancy time COT, and the first channel occupancy includes a first COT.

[0201] In other words, if the channel access mode corresponding to the first uplink transmission is the first channel access mode, the network device can share the resources in the first COT for downlink transmission.

[0202] Optionally, if the channel access method corresponding to the first uplink transmission is the first channel access method, downlink transmission can be performed based on the resources in the first COT, for example, the network device can perform downlink transmission based on the resources in the first COT; or, if the channel access method corresponding to the first uplink transmission is the second channel access method, downlink transmission cannot be performed based on the resources in the first COT, for example, the network device cannot perform downlink transmission based on the resources in the first COT.

[0203] Optionally, if the channel access mode corresponding to the first uplink transmission is the first channel access mode, and the terminal device is not configured with a COT shared energy detection threshold, downlink transmission may be performed based on resources in the first COT. For example, the network device may perform downlink transmission based on resources in the first COT. The time length used for downlink transmission in the first COT is less than or equal to a fourth preset value.

[0204] Optionally, the value of the fourth preset value is related to the subcarrier spacing; and / or the unit of the fourth preset value is millisecond, subframe, time slot or symbol.

[0205] As an example, for a subcarrier spacing of 15 kHz, 30 kHz or 60 kHz, the fourth preset value is 2, 4 or 8 symbols, respectively.

[0206] In some embodiments of the present application, the first periodic channel occupancy is a channel occupancy configured by the terminal device and can be used by the terminal device to initiate COT, wherein, if the terminal device is an idle state (RRC_IDLE state) or an inactive state (RRC_INACTIVE state) terminal device, the first periodic channel occupancy is configured by the network device through a system message; or,

[0207] If the terminal device is a terminal device in a connected state (RRC_CONNECTED state), the first periodic channel occupancy is configured by the network device through dedicated radio resource control RRC signaling of the terminal device.

[0208] In some embodiments of the present application, the end position of the COT in the first cycle channel occupancy is determined based on the maximum COT length corresponding to the first cycle channel occupancy, or the end position of the COT in the first cycle channel occupancy is determined based on the end position of the COT in the second cycle channel occupancy.

[0209] Optionally, the second periodic channel occupancy includes the channel occupancy used by the network device to initiate COT, or the second periodic channel occupancy includes the channel occupancy used by the terminal device to initiate COT.

[0210] In some embodiments of the present application, the first periodic channel occupies a corresponding first bandwidth part BWP, and the first BWP includes an activation BWP and / or a configuration BWP of the terminal device. Optionally, the first BWP includes an uplink BWP and / or a downlink BWP of the terminal device.

[0211] Optionally, if the terminal device is configured with multiple BWPs, the multiple BWPs correspond to the same first periodic channel occupancy, or the terminal device does not expect different BWPs in the multiple BWPs to correspond to different periodic channel occupancies.

[0212] In some embodiments of the present application, the first uplink transmission includes at least one of a physical uplink shared channel (Physical Uplink Shared Channel, PUSCH), a physical uplink control channel (Physical Uplink Control Channel, PUCCH), a sounding reference signal (Sounding Reference Signal, SRS), and a physical random access channel (Physical Random Access Channel, PRACH).

[0213] The present application also provides a method for a network device to configure periodic channel occupancy (or periodic FFP) for a terminal device.

[0214] The network device configures a first period FFP for the terminal device, wherein the first period FFP is a period FFP used by the terminal device to initiate channel occupation.

[0215] Optionally, the first periodic FFP is a periodic FFP used for a terminal device in an idle state or an inactive state to initiate channel occupation.

[0216] Optionally, the network device configures the first period FFP for the terminal device through a system message such as SIB1.

[0217] Optionally, the first-period FFP is associated with the initial BWP, or in other words, the network device configures the first-period FFP for the initial BWP of the terminal device.

[0218] Optionally, the way in which the network device configures the first period FFP for the terminal device is the same as the way in which the network device configures the second period FFP for the terminal device, wherein the second period FFP is the period FFP configured by the network device for the terminal device for initiating channel occupancy.

[0219] Optionally, the length of the first period FFP is the same as the length of the second period FFP. Optionally, the end position of the COT in the first period FFP is the same as the end position of the COT in the second period FFP. Optionally, the end position of the COT in the first period FFP is determined based on the end position of the COT in the second period FFP, or the end position of the COT in the second period FFP is determined based on the end position of the COT in the first period FFP.

[0220] Optionally, the length of the second period FFP is an integer multiple of the length of the first period FFP, or the length of the first period FFP is an integer multiple of the length of the second period FFP. Optionally, the end position of the COT in the first period FFP is the same as the end position of the COT in the second period FFP. Optionally, the end position of the COT in the first period FFP is determined based on the end position of the COT in the second period FFP, or the end position of the COT in the second period FFP is determined based on the end position of the COT in the first period FFP.

[0221] Optionally, the end position of the COT in the first period FFP is determined according to the end position of the COT in the second period FFP and / or the maximum COT length in the first period FFP. Optionally, the end position of the COT in the second period FFP is determined according to the end position of the COT in the first period FFP and / or the maximum COT length in the second period FFP.

[0222] Optionally, the first cycle FFP is determined according to the PRACH configuration. For example, the starting position of the first cycle FFP is the same as the starting position of the first configured PRACH resource (or RACH opportunity, RO, RACH occasion) in the PRACH resource cycle. Alternatively, the starting position of the first cycle FFP is the same as the starting position of the first configured valid PRACH resource (or valid RO) in the PRACH resource cycle.

[0223] Optionally, the first period FFP is determined according to the first period and a first offset value, wherein the first offset value is associated with a boundary of the SFN. Optionally, the first period may also be considered as the length of the first period FFP.

[0224] The network device configures a third period FFP for the terminal device, wherein the third period FFP is a period FFP used by the terminal device to initiate channel occupation.

[0225] Optionally, the third periodic FFP is a periodic FFP used for a terminal device in an RRC connected state to initiate channel occupancy.

[0226] Optionally, the network device configures the third period FFP for the terminal device through dedicated RRC signaling of the terminal device.

[0227] Optionally, the third period FFP is associated with the first BWP, or in other words, the network device configures the third period FFP for the first BWP of the terminal device. Optionally, the first BWP includes an activation BWP and / or a configuration BWP of the terminal device. Optionally, the first BWP includes an uplink BWP and / or a downlink BWP of the terminal device.

[0228] Optionally, the terminal device is configured with multiple bandwidth parts BWP, the multiple BWPs correspond to the same third period FFP, or the terminal device does not expect the FFPs configured in the multiple BWPs to be different. Optionally, the multiple BWPs include an uplink BWP and / or a downlink BWP of the terminal device.

[0229] Optionally, the length of the second period FFP is an integer multiple of the length of the third period FFP, or the length of the third period FFP is an integer multiple of the length of the second period FFP. Optionally, the end position of the COT in the third period FFP is the same as the end position of the COT in the second period FFP. Optionally, the end position of the COT in the third period FFP is determined based on the end position of the COT in the second period FFP, or the end position of the COT in the second period FFP is determined based on the end position of the COT in the third period FFP.

[0230] Optionally, the end position of the COT in the third period FFP is determined according to the end position of the COT in the second period FFP and / or the maximum COT length in the third period FFP. Optionally, the end position of the COT in the second period FFP is determined according to the end position of the COT in the third period FFP and / or the maximum COT length in the second period FFP.

[0231] Embodiment 1:

[0232] Figure 4 It is a schematic timing diagram of channel occupancy provided in an embodiment of the present application.

[0233] like Figure 4As shown, it is assumed that the length of the second cycle FFP is 10 milliseconds and the length of the third cycle FFP is 5 milliseconds. In the time domain, the offset between the second cycle FFP and the third cycle FFP is 0.5 milliseconds (ms). Among them, the end position of the COT in the third cycle FFP is determined according to the end position of the COT in the second cycle FFP and / or the maximum COT length in the third cycle FFP. For example, the end position of the COT in one FFP in the third cycle FFP is determined according to the maximum COT length in the third cycle FFP; the end position of the COT in another FFP in the third cycle FFP is determined according to the end position of the COT in the second cycle FFP, or the end position of the COT in another FFP in the third cycle FFP is the same as the end position of the COT in the second cycle FFP.

[0234] Embodiment 2:

[0235] Figure 5 and Figure 6 These are schematic timing diagrams of channel occupancy provided in the embodiments of the present application.

[0236] like Figure 5 and Figure 6 As shown, the terminal device determines a first FFP and a second FFP. The first FFP is one of the first cycle FFPs configured by the terminal device and can be used by the terminal device to initiate channel occupancy. The second FFP is one of the second cycle FFPs in which the network device initiates channel occupancy. The terminal device receives a first DCI sent by the network device, and the first DCI is used to schedule the terminal device to send a first PUSCH through a first time domain resource, wherein the starting position of the first time domain resource is the same as the starting position of the first FFP.

[0237] In some possible implementations, the first DCI includes channel access indication information, and the terminal device determines the channel access mode corresponding to the first PUSCH according to the channel access indication information.

[0238] like Figure 6 As shown. If the CPE length indicated by the channel access indication information is 0, the terminal device determines that the channel access method corresponding to the first PUSCH is the first channel access method, or the terminal device determines that the LBT method corresponding to the first PUSCH is the channel access method for initiating the first COT. Specifically, the terminal device performs a channel detection with a detection time slot length of 9 microseconds before the starting position of the first time domain resource, and sends the first PUSCH from the starting position of the first COT after the channel detection is successful.

[0239] If the CPE length indicated by the channel access indication information is not 0, the terminal device determines that the channel access mode corresponding to the first PUSCH is the second channel access mode, or the terminal device determines that the LBT mode corresponding to the first PUSCH is the channel access mode of the shared network device COT. Further, if the channel access mode indicated by the channel access indication information is Type2C channel access or Type2B channel access, then the terminal device determines that the channel access mode corresponding to the first PUSCH is the first channel access sub-mode, or the terminal device may start sending the first PUSCH without performing channel detection. If the channel access mode indicated by the channel access indication information is Type2A channel access or Type1 channel access, the terminal device determines that the channel access mode corresponding to the first PUSCH is the second channel access sub-mode, or the terminal device performs a channel detection with a detection time slot length of 9 microseconds within an interval of 25 microseconds before the start of the first time domain resource, and sends the first PUSCH after the channel detection is successful.

[0240] In some possible implementations, the terminal device determines the channel access mode corresponding to the first PUSCH according to a preset rule. For example, the terminal device determines the channel access mode corresponding to the first PUSCH according to the position of the first time domain resource.

[0241] like Figure 5 As shown, if the first DCI is within the second COT of the network device, and the first time domain resource for the first PUSCH transmission scheduled by the first DCI is not within the second COT of the network device, the terminal device determines that the channel access method corresponding to the first PUSCH is the first channel access method, or the terminal device determines that the LBT method corresponding to the first PUSCH is the channel access method for initiating COT. Specifically, the terminal device performs a channel detection with a detection time slot length of 9 microseconds before the starting position of the first time domain resource, and sends the first PUSCH from the starting position of the first COT after the channel detection is successful.

[0242] like Figure 6As shown. If the first DCI is within the second COT of the network device, and the first time domain resource for the first DCI to schedule the transmission of the first PUSCH is also within the second COT of the network device, the terminal device determines that the channel access mode corresponding to the first PUSCH is the second channel access mode, or the terminal device determines that the LBT mode corresponding to the first PUSCH is the channel access mode of the shared network device COT. Further, if the channel access mode indicated by the channel access indication information in the first DCI is Type2C channel access or Type2B channel access, the terminal device determines that the channel access mode corresponding to the first PUSCH is the first channel access sub-mode, or the terminal device may start sending the first PUSCH without performing channel detection. If the channel access mode indicated by the channel access indication information is Type2A channel access or Type1 channel access, the terminal device determines that the channel access mode corresponding to the first PUSCH is the second channel access sub-mode, or the terminal device performs a channel detection with a detection time slot length of 9 microseconds within an interval of 25 microseconds before the start of the first time domain resource, and sends the first PUSCH after the channel detection is successful.

[0243] The preferred embodiments of the present application are described in detail above in conjunction with the accompanying drawings. However, the present application is not limited to the specific details in the above embodiments. Within the technical concept of the present application, the technical solution of the present application can be subjected to a variety of simple modifications, and these simple modifications all belong to the protection scope of the present application. For example, the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present application will not further explain various possible combinations. For another example, the various different embodiments of the present application can also be arbitrarily combined, as long as they do not violate the ideas of the present application, they should also be regarded as the contents disclosed in the present application.

[0244] It should also be understood that in various method embodiments of the present application, the size of the sequence number of each process does not mean the order of execution, and the execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiment of the present application. In addition, in the embodiment of the present application, the terms "downlink" and "uplink" are used to indicate the transmission direction of the signal or data, wherein "downlink" is used to indicate that the transmission direction of the signal or data is a first direction sent from the site to the user equipment of the cell, and "uplink" is used to indicate that the transmission direction of the signal or data is a second direction sent from the user equipment of the cell to the site, for example, "downlink signal" indicates that the transmission direction of the signal is the first direction. In addition, in the embodiment of the present application, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there can be three relationships. Specifically, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0245] Combined with the above Figures 2 to 6 The wireless communication method according to the embodiment of the present application is described in detail from the perspective of the terminal device. Figure 7 , describes the wireless communication method according to an embodiment of the present application from the perspective of a network device.

[0246] Figure 7 FIG. 3 is a schematic flow chart of a wireless communication method 300 according to an embodiment of the present application. The method 300 may be performed as follows: Figure 1 The network devices shown are executed.

[0247] like Figure 7 As shown, the method 300 may include:

[0248] S310, the network device sends first downlink control information DCI to the terminal device, where the first DCI is used by the terminal device to determine a channel access method corresponding to a first uplink transmission; the first DCI is used to schedule the first uplink transmission.

[0249] In other words, the terminal device receives the first DCI sent by the network device.

[0250] In some embodiments of the present application, the method 300 may further include:

[0251] The network device sends first configuration information to the terminal device, where the first configuration information is used to configure a channel occupancy time COT shared energy detection threshold.

[0252] In other words, the terminal device receives the first configuration information sent by the network device.

[0253] In some embodiments of the present application, the method 300 may further include:

[0254] The network device sends second configuration information to the terminal device, where the second configuration information is used to configure a first periodic channel occupancy, where the first periodic channel occupancy includes a channel occupancy for the terminal device to initiate a channel occupancy time COT.

[0255] In other words, the terminal device receives the second configuration information sent by the network device.

[0256] In some embodiments of the present application, the first periodic channel occupancy is the channel occupancy configured by the terminal device and can be used by the terminal device to initiate COT, wherein, if the terminal device is an idle or inactive terminal device, the first periodic channel occupancy is configured by the network device through a system message; or, if the terminal device is a connected terminal device, the first periodic channel occupancy is configured by the network device through the dedicated radio resource control RRC signaling of the terminal device.

[0257] It should be understood that the steps in method 300 can refer to the corresponding steps in method 200, and for the sake of brevity, they will not be repeated here. For example, the network device may also determine the channel access method corresponding to the first uplink transmission based on a method similar to that of the terminal device. For example, the channel access method corresponding to the first uplink transmission is determined based on the channel access indication information in the first DCI. For another example, the channel access method corresponding to the first uplink transmission is determined based on the preset rules involved above.

[0258] Combination of the above Figures 1 to 7 , describes in detail the method embodiment of the present application, and the following is combined with Figures 8 to 11 , describe in detail the device embodiments of the present application.

[0259] Figure 8 It is a schematic block diagram of a terminal device 400 according to an embodiment of the present application.

[0260] like Figure 8 As shown, the terminal device 400 may include:

[0261] A first processing unit 410 is configured to determine a first periodic channel occupancy, where the first periodic channel occupancy includes a channel occupancy for the terminal device to initiate a channel occupancy time COT, where the first periodic channel occupancy includes a first channel occupancy;

[0262] The second processing unit 420 is used to determine the channel access method corresponding to the first uplink transmission, the starting position occupied by the first channel is the same as the starting position of the first time domain resource, and the first time domain resource is the resource used by the terminal device to transmit the first uplink transmission.

[0263] In some embodiments of the present application, the channel access method corresponding to the first uplink transmission includes a first channel access method and / or a second channel access method.

[0264] In some embodiments of the present application, the first channel access method includes a channel access method in which the terminal device initiates COT.

[0265] In some embodiments of the present application, the first channel access method includes performing channel detection with a fixed detection time slot length; or,

[0266] The first channel access method includes: the terminal device performs a channel detection with a fixed detection time slot length of 9 microseconds before the first time domain resource; if the channel detection is successful, the terminal device sends the first uplink transmission through the first time domain resource; if the channel detection fails, the terminal device does not send the first uplink transmission through the first time domain resource.

[0267] In some embodiments of the present application, if the terminal device is configured with a COT shared energy detection threshold, the terminal device uses the COT shared energy detection threshold to perform channel detection in the first channel access mode.

[0268] In some embodiments of the present application, the second channel access method includes a COT channel access method of a shared network device.

[0269] In some embodiments of the present application, the second channel access mode includes a first channel access sub-mode and / or a second channel access sub-mode, wherein the first channel access sub-mode includes not performing channel detection, and the second channel access sub-mode includes performing channel detection with a fixed detection time slot length within a fixed interval.

[0270] In some embodiments of the present application, the first channel access sub-mode includes: if the gap between the first uplink transmission and the first downlink transmission opportunity does not exceed 16 microseconds, the terminal device does not perform channel detection after the first downlink transmission opportunity ends and starts to send the first uplink transmission; and / or,

[0271] The second channel access sub-mode includes: if the gap between the first uplink transmission and the first downlink transmission opportunity exceeds 16 microseconds, the terminal device performs a channel detection with a fixed detection time slot length of 9 microseconds within a fixed interval of 25 microseconds before the start of transmission of the first uplink transmission, and sends the first uplink transmission after the channel detection is successful;

[0272] The first uplink transmission and the first downlink transmission opportunities belong to the same COT of the network device.

[0273] In some embodiments of the present application, the second processing unit 420 is specifically configured to:

[0274] A channel access mode corresponding to the first uplink transmission is determined according to first downlink control information DCI; the first DCI is used to schedule the first uplink transmission.

[0275] In some embodiments of the present application, the second processing unit 420 is specifically configured to:

[0276] A channel access mode corresponding to the first uplink transmission is determined according to the channel access indication information in the first DCI.

[0277] In some embodiments of the present application, the channel access indication information indicates extending the cyclic prefix CPE length, and the second processing unit 420 is specifically configured to:

[0278] If the CPE length indicated by the channel access indication information is the first preset value or corresponds to the first preset value, it is determined that the channel access method corresponding to the first uplink transmission is the first channel access method; or, if the CPE length indicated by the channel access indication information is not the first preset value or does not correspond to the first preset value, it is determined that the channel access method corresponding to the first uplink transmission is the second channel access method.

[0279] In some embodiments of the present application, the channel access indication information further indicates a channel access type, and the second processing unit 420 is specifically configured to:

[0280] In the case that the CPE length indicated by the channel access indication information is not the first preset value or does not correspond to the first preset value, if the channel access type indicated by the channel access indication information is type 2C or type 2B, it is determined that the channel access method corresponding to the first uplink transmission is the first channel access sub-method in the second channel access method; or, if the channel access type indicated by the channel access indication information is type 2A or type 1, it is determined that the channel access method corresponding to the first uplink transmission is the second channel access sub-method in the second channel access method.

[0281] In some embodiments of the present application, the first preset value is 0.

[0282] In some embodiments of the present application, the channel access indication information indicates a channel access type, and the second processing unit 420 is specifically configured to:

[0283] If the channel access type indicated by the channel access indication information is the first type, determine that the channel access method corresponding to the first uplink transmission is the first channel access method; or, if the channel access type indicated by the channel access indication information is not the first type, determine that the channel access method corresponding to the first uplink transmission is the second channel access method.

[0284] In some embodiments of the present application, the channel access indication information further indicates the CPE length, and the second processing unit 420 is specifically configured to:

[0285] In the case that the channel access type indicated by the channel access indication information is not the first type, if the CPE length indicated by the channel access indication information corresponds to 16 microseconds, it is determined that the channel access method corresponding to the first uplink transmission is the first channel access sub-method in the second channel access method, or, if the CPE length indicated by the channel access indication information does not correspond to 16 microseconds, it is determined that the channel access method corresponding to the first uplink transmission is the second channel access sub-method in the second channel access method.

[0286] In some embodiments of the present application, the first type includes at least one of the following: type 2A, type 2B, type 2C and type 1.

[0287] In some embodiments of the present application, the second processing unit 420 is specifically configured to:

[0288] If the channel access indication information indicates the second preset value, the channel access method corresponding to the first uplink transmission is determined to be the first channel access method; or, if the channel access indication information does not indicate the second preset value, the channel access method corresponding to the first uplink transmission is determined to be the second channel access method.

[0289] In some embodiments of the present application, the second processing unit 420 is specifically configured to:

[0290] If the channel access indication information indicates a second preset value, it is determined that the channel access method corresponding to the first uplink transmission is the first channel access method; or, if the channel access indication information indicates a third preset value, it is determined that the channel access method corresponding to the first uplink transmission is the second channel access method, and the second preset value is different from the third preset value.

[0291] In some embodiments of the present application, the channel access indication information includes at least one bit, and the at least one bit is used to indicate the channel access mode corresponding to the first uplink transmission.

[0292] In some embodiments of the present application, the at least one bit includes 2 bits.

[0293] In some embodiments of the present application, the second processing unit 420 is specifically configured to:

[0294] The terminal device determines the channel access method corresponding to the first uplink transmission according to a preset rule.

[0295] In some embodiments of the present application, the second processing unit 420 is specifically configured to:

[0296] If the terminal device is configured with a COT shared energy detection threshold, the channel access method corresponding to the first uplink transmission is determined to be the first channel access method; or, if the terminal device is not configured with a COT shared energy detection threshold, the channel access method corresponding to the first uplink transmission is determined to be the second channel access method.

[0297] In some embodiments of the present application, the second processing unit 420 is specifically configured to perform at least one of the following:

[0298] If the first time domain resource is within the second COT of the network device, and the terminal device receives a downlink signal or a downlink channel sent by the network device before the first time domain resource within the second COT, it is determined that the channel access mode corresponding to the first uplink transmission is the second channel access mode;

[0299] If the first time domain resource is within the second COT, and the terminal device does not receive a downlink signal or a downlink channel sent by the network device before the first time domain resource within the second COT, determine that the channel access mode corresponding to the first uplink transmission is the first channel access mode;

[0300] If the first time domain resource is not within the COT of the network device, determining that the channel access mode corresponding to the first uplink transmission is a first channel access mode;

[0301] If the first DCI is within the second COT, and the first time domain resource is not within the second COT, determining that the channel access mode corresponding to the first uplink transmission is the first channel access mode;

[0302] If the first DCI is within the second COT, and the first time domain resource is within the second COT, determining that the channel access mode corresponding to the first uplink transmission is the second channel access mode;

[0303] If the first DCI is within the second COT, and the first time domain resource is within the second COT, determining a channel access mode corresponding to the first uplink transmission according to the channel access indication information in the first DCI;

[0304] The first DCI is used to schedule the first uplink transmission.

[0305] In some embodiments of the present application, the second processing unit 420 is further configured to:

[0306] According to the channel access method corresponding to the first uplink transmission, determine the extended cyclic prefix CPE length used by the terminal device when sending the first uplink transmission.

[0307] In some embodiments of the present application, the second processing unit 420 is specifically configured to:

[0308] If the channel access method corresponding to the first uplink transmission is the first channel access method, it is determined that the CPE length used by the terminal device when sending the first uplink transmission is 0.

[0309] In some embodiments of the present application, the second processing unit 420 is specifically configured to:

[0310] If the channel access mode corresponding to the first uplink transmission is the first channel access mode, the CPE length indicated by the channel access indication information in the first DCI is ignored, and the first DCI is used to schedule the first uplink transmission; or, it is expected that the CPE length indicated by the channel access indication information in the first DCI is 0; or, it is not expected that the CPE length indicated by the channel access indication information in the first DCI is not 0.

[0311] In some embodiments of the present application, the second processing unit 420 is further configured to:

[0312] If the terminal device is configured with a COT shared energy detection threshold, it is determined whether to perform channel detection based on the COT shared energy detection threshold according to the channel access method corresponding to the first uplink transmission.

[0313] In some embodiments of the present application, the second processing unit 420 is specifically configured to:

[0314] If the terminal device is configured with a COT shared energy detection threshold, and the channel access method corresponding to the first uplink transmission is the first channel access method, channel detection is performed based on the COT shared energy detection threshold.

[0315] In some embodiments of the present application, the second processing unit 420 is specifically configured to:

[0316] If the terminal device is configured with a COT shared energy detection threshold, and the channel access method corresponding to the first uplink transmission is the second channel access method; channel detection is performed based on the COT shared energy detection threshold, or channel detection is not performed based on the COT shared energy detection threshold.

[0317] In some embodiments of the present application, the COT shared energy detection threshold is determined according to the transmission power of the network device.

[0318] In some embodiments of the present application, the channel access method corresponding to the first uplink transmission is also used to determine whether downlink transmission can be performed based on resources in a first channel occupancy time COT, and the first channel occupancy includes a first COT.

[0319] In some embodiments of the present application, if the channel access method corresponding to the first uplink transmission is the first channel access method, downlink transmission can be performed based on the resources in the first COT; or, if the channel access method corresponding to the first uplink transmission is the second channel access method, downlink transmission cannot be performed based on the resources in the first COT.

[0320] In some embodiments of the present application, if the channel access method corresponding to the first uplink transmission is the first channel access method, and the terminal device is not configured with a COT shared energy detection threshold, downlink transmission can be performed based on the resources in the first COT; wherein the time length used for downlink transmission in the first COT is less than or equal to a fourth preset value.

[0321] In some embodiments of the present application, the value of the fourth preset value is related to the subcarrier spacing; and / or the unit of the fourth preset value is milliseconds, subframes, time slots or symbols.

[0322] In some embodiments of the present application, the first periodic channel occupancy is a channel occupancy configured by the terminal device and can be used by the terminal device to initiate COT, wherein, if the terminal device is an idle or inactive terminal device, the first periodic channel occupancy is configured by the network device through a system message; or,

[0323] If the terminal device is a connected terminal device, the first periodic channel occupancy is configured by the network device through the dedicated radio resource control RRC signaling of the terminal device.

[0324] In some embodiments of the present application, the end position of the COT in the first cycle channel occupancy is determined based on the maximum COT length corresponding to the first cycle channel occupancy, or the end position of the COT in the first cycle channel occupancy is determined based on the end position of the COT in the second cycle channel occupancy.

[0325] In some embodiments of the present application, the second periodic channel occupancy includes the channel occupancy used by the network device to initiate COT, or the second periodic channel occupancy includes the channel occupancy used by the terminal device to initiate COT.

[0326] In some embodiments of the present application, the first periodic channel occupancy corresponds to a first bandwidth part BWP, and the first BWP includes an activation BWP and / or a configuration BWP of the terminal device.

[0327] In some embodiments of the present application, if the terminal device is configured with multiple BWPs; the multiple BWPs correspond to the same first periodic channel occupancy, or the terminal device does not expect different BWPs among the multiple BWPs to correspond to different periodic channel occupancies.

[0328] In some embodiments of the present application, the first uplink transmission includes at least one of a physical uplink shared channel PUSCH, a physical uplink control channel PUCCH, a sounding reference signal SRS, and a physical random access channel PRACH.

[0329] It should be understood that the device embodiment and the method embodiment may correspond to each other, and similar descriptions may refer to the method embodiment. Specifically, Figure 8 The terminal device 400 shown may correspond to the corresponding subject in the method 200 of the embodiment of the present application, and the aforementioned and other operations and / or functions of each unit in the terminal device 400 are respectively to implement Figure 3 For the sake of brevity, the corresponding processes in each method are not repeated here.

[0330] Fig. 9 It is a schematic block diagram of a network device 500 according to an embodiment of the present application.

[0331] like Fig. 9 As shown, the network device 500 may include:

[0332] The communication unit 510 is used to send first downlink control information DCI to the terminal device, where the first DCI is used by the terminal device to determine a channel access method corresponding to a first uplink transmission; the first DCI is used to schedule the first uplink transmission.

[0333] In some embodiments of the present application, the communication unit 510 is further configured to:

[0334] Send first configuration information to the terminal device, where the first configuration information is used to configure a channel occupancy time COT shared energy detection threshold.

[0335] In some embodiments of the present application, the communication unit 510 is further configured to:

[0336] Sending second configuration information to the terminal device, where the second configuration information is used to configure a first periodic channel occupancy, where the first periodic channel occupancy includes a channel occupancy for the terminal device to initiate a channel occupancy time COT.

[0337] In some embodiments of the present application, the first periodic channel occupancy is a channel occupancy configured by the terminal device and can be used by the terminal device to initiate COT, wherein, if the terminal device is an idle or inactive terminal device, the first periodic channel occupancy is configured by the network device through a system message; or,

[0338] If the terminal device is a connected terminal device, the first periodic channel occupancy is configured by the network device through the dedicated radio resource control RRC signaling of the terminal device.

[0339] It should be understood that the device embodiment and the method embodiment may correspond to each other, and similar descriptions may refer to the method embodiment. Specifically, Fig. 9 The network device 500 shown may correspond to the corresponding subject in the method 300 of the embodiment of the present application, and the aforementioned and other operations and / or functions of each unit in the network device 500 are respectively to implement Figure 7 For the sake of brevity, the corresponding processes in each method are not repeated here.

[0340] The communication device of the embodiment of the present application is described above from the perspective of functional modules in conjunction with the accompanying drawings. It should be understood that the functional modules can be implemented in hardware form, can also be implemented by software instructions, and can also be implemented by a combination of hardware and software modules.

[0341] Specifically, each step of the method embodiment in the embodiment of the present application can be completed by the hardware integrated logic circuit and / or software instructions in the processor. The steps of the method disclosed in the embodiment of the present application can be directly reflected as being executed by a hardware decoding processor, or being executed by a combination of hardware and software modules in the decoding processor.

[0342] Optionally, the software module may be located in a mature storage medium in the art, such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory, an electrically erasable programmable memory, a register, etc. The storage medium is located in the memory, and the processor reads the information in the memory and completes the steps in the above method embodiment in combination with its hardware.

[0343] For example, the processing unit and the communication unit mentioned above may be implemented by a processor and a transceiver, respectively.

[0344] Fig.10 It is a schematic structural diagram of a communication device 600 according to an embodiment of the present application.

[0345] like Fig.10 As shown, the communication device 600 may include a processor 610 .

[0346] The processor 610 may call and run a computer program from the memory to implement the method in the embodiment of the present application.

[0347] Please continue to see Fig.10 , the communication device 600 may further include a memory 620 .

[0348] The memory 620 may be used to store indication information, and may also be used to store codes, instructions, etc. executed by the processor 610. The processor 610 may call and run a computer program from the memory 620 to implement the method in the embodiment of the present application. The memory 620 may be a separate device independent of the processor 610, or may be integrated in the processor 610.

[0349] Please continue to see Fig.10 , the communication device 600 may further include a transceiver 630 .

[0350] The processor 610 may control the transceiver 630 to communicate with other devices, specifically, to send information or data to other devices, or to receive information or data sent by other devices. The transceiver 630 may include a transmitter and a receiver. The transceiver 630 may further include an antenna, and the number of antennas may be one or more.

[0351] It should be understood that the various components in the communication device 600 are connected via a bus system, wherein the bus system includes not only a data bus but also a power bus, a control bus and a status signal bus.

[0352] It should also be understood that the communication device 600 may be a terminal device of an embodiment of the present application, and the communication device 600 may implement the corresponding processes implemented by the terminal device in each method of the embodiment of the present application, that is, the communication device 600 of the embodiment of the present application may correspond to the terminal device 400 in the embodiment of the present application, and may correspond to the corresponding subject in the method 200 according to the embodiment of the present application, for the sake of brevity, it will not be repeated here. Similarly, the communication device 600 may be a network device of the embodiment of the present application, and the communication device 600 may implement the corresponding processes implemented by the network device in each method of the embodiment of the present application. That is to say, the communication device 600 of the embodiment of the present application may correspond to the network device 500 in the embodiment of the present application, and may correspond to the corresponding subject in the method 300 according to the embodiment of the present application, for the sake of brevity, it will not be repeated here.

[0353] In addition, a chip is also provided in an embodiment of the present application.

[0354] For example, the chip may be an integrated circuit chip with signal processing capabilities, and can implement or execute the methods, steps, and logic diagrams disclosed in the embodiments of the present application. The chip may also be called a system-level chip, a system chip, a chip system, or a system-on-chip chip, etc. Optionally, the chip can be applied to various communication devices, so that the communication device equipped with the chip can execute the methods, steps, and logic diagrams disclosed in the embodiments of the present application.

[0355] Fig.11 is a schematic structural diagram of a chip 700 according to an embodiment of the present application.

[0356] like Fig.11 As shown, the chip 700 includes a processor 710 .

[0357] The processor 710 may call and run a computer program from the memory to implement the method in the embodiment of the present application.

[0358] Please continue to see Fig.11 , the chip 700 may further include a memory 720 .

[0359] The processor 710 may call and run a computer program from the memory 720 to implement the method in the embodiment of the present application. The memory 720 may be used to store indication information, and may also be used to store codes, instructions, etc. executed by the processor 710. The memory 720 may be a separate device independent of the processor 710, or may be integrated in the processor 710.

[0360] Please continue to see Fig.11 , the chip 700 may further include an input interface 730 .

[0361] The processor 710 may control the input interface 730 to communicate with other devices or chips, and specifically, may obtain information or data sent by other devices or chips.

[0362] Please continue to see Fig.11 , the chip 700 may further include an output interface 740 .

[0363] The processor 710 may control the output interface 740 to communicate with other devices or chips, and specifically, may output information or data to other devices or chips.

[0364] It should be understood that the chip 700 can be applied to the network device in the embodiments of the present application, and the chip can implement the corresponding processes implemented by the network device in the various methods of the embodiments of the present application, and can also implement the corresponding processes implemented by the terminal device in the various methods of the embodiments of the present application. For the sake of brevity, it will not be repeated here.

[0365] It should also be understood that the various components in the chip 700 are connected via a bus system, wherein the bus system includes not only a data bus but also a power bus, a control bus and a status signal bus.

[0366] The processors mentioned above may include but are not limited to:

[0367] General-purpose processor, digital signal processor (DSP), application-specific integrated circuit (ASIC), field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware components, etc.

[0368] The processor can be used to implement or execute the methods, steps and logic block diagrams disclosed in the embodiments of the present application. The steps of the method disclosed in the embodiments of the present application can be directly embodied as a hardware decoding processor, or a combination of hardware and software modules in the decoding processor. The software module can be located in a mature storage medium in the field such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory or an erasable programmable memory, a register, etc. The storage medium is located in a memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.

[0369] The memory mentioned above includes but is not limited to:

[0370] Volatile memory and / or non-volatile memory. Among them, the non-volatile memory can be read-only memory (ROM), programmable ROM (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 and not limitation, many forms of RAM are available, such as 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 DRAM (SLDRAM), and direct RAM bus random access memory (DR RAM).

[0371] It should be noted that the memory described herein is intended to include these and any other suitable types of memory.

[0372] In an embodiment of the present application, a computer-readable storage medium is further provided for storing a computer program. The computer-readable storage medium stores one or more programs, wherein the one or more programs include instructions, which, when executed by a portable electronic device including a plurality of application programs, enable the portable electronic device to perform the method of the method embodiment.

[0373] Optionally, the computer-readable storage medium can be applied to the network device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the network device in the various methods of the embodiments of the present application. For the sake of brevity, they are not repeated here.

[0374] Optionally, the computer-readable storage medium can be applied to the mobile terminal / terminal device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the mobile terminal / terminal device in the various methods of the embodiments of the present application. For the sake of brevity, they are not repeated here.

[0375] A computer program product is also provided in an embodiment of the present application, including a computer program.

[0376] Optionally, the computer program product can be applied to the network device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the network device in the various methods of the embodiments of the present application. For the sake of brevity, they are not repeated here.

[0377] Optionally, the computer program product can be applied to the mobile terminal / terminal device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the mobile terminal / terminal device in the various methods of the embodiments of the present application. For the sake of brevity, they are not repeated here.

[0378] The embodiment of the present application further provides a computer program. When the computer program is executed by a computer, the computer can execute the method of the method embodiment.

[0379] Optionally, the computer program can be applied to the network device in the embodiments of the present application. When the computer program runs on a computer, the computer executes the corresponding processes implemented by the network device in the various methods in the embodiments of the present application. For the sake of brevity, they are not described here.

[0380] Optionally, the computer program can be applied to the terminal device in the embodiments of the present application. When the computer program runs on the computer, the computer executes the corresponding processes implemented by the terminal device in the various methods of the embodiments of the present application. For the sake of brevity, they are not repeated here.

[0381] In addition, the embodiment of the present application further provides a communication system, which may include the terminal device and network device involved above, which will not be described in detail for the sake of brevity. It should be noted that the term "system" in this article may also be referred to as "network management architecture" or "network system".

[0382] It should also be understood that the terms used in the embodiments of the present application and the appended claims are for the purpose of describing specific embodiments only and are not intended to limit the embodiments of the present application.

[0383] For example, as used in the embodiments of the present application and the appended claims, the singular forms "a," "said," "above," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

[0384] Those skilled in the art will appreciate that the units and algorithm steps of each example 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 performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the embodiments of the present application.

[0385] If implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the embodiment of the present application is essentially or the part that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions to enable a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in the embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory, a random access memory, a magnetic disk or an optical disk.

[0386] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0387] In several embodiments provided in this application, it should be understood that the disclosed systems, devices, and methods may be implemented in other ways.

[0388] For example, the division of units or modules or components in the device embodiment described above is only a logical function division, and there may be other division methods in actual implementation. For example, multiple units or modules or components can be combined or integrated into another system, or some units or modules or components can be ignored or not executed.

[0389] For another example, the units / modules / components described above as separation / display components may or may not be physically separated, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units / modules / components may be selected according to actual needs to achieve the purpose of the embodiments of the present application.

[0390] Finally, it should be noted that the mutual coupling or direct coupling or communication connection shown or discussed above may be an indirect coupling or communication connection through some interfaces, devices or units, which may be electrical, mechanical or other forms.

[0391] The above contents are only specific implementation methods of the embodiments of the present application, but the protection scope of the embodiments of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or replacements within the technical scope disclosed in the embodiments of the present application, which should be included in the protection scope of the embodiments of the present application. Therefore, the protection scope of the embodiments of the present application shall be based on the protection scope of the claims.

Claims

1. A wireless communication method, characterized in that: include: The terminal device determines a first period channel occupancy, where the first period channel occupancy includes a channel occupancy for the terminal device to initiate a channel occupancy time COT, and the first period channel occupancy includes a first channel occupancy; The terminal device determines a channel access method corresponding to a first uplink transmission, the starting position occupied by the first channel is the same as the starting position of a first time domain resource, and the first time domain resource is a resource used by the terminal device to transmit the first uplink transmission.

2. The method according to claim 1, characterized in that The channel access method corresponding to the first uplink transmission includes a first channel access method and / or a second channel access method.

3. The method according to claim 2, characterized in that The first channel access method includes a channel access method in which the terminal device initiates COT.

4. The method according to claim 2, characterized in that The second channel access method includes a COT channel access method of a shared network device.

5. The method according to any one of claims 1 to 4, characterized in that The terminal device determines a channel access mode corresponding to the first uplink transmission, including: The terminal device determines a channel access method corresponding to the first uplink transmission according to first downlink control information DCI; the first DCI is used to schedule the first uplink transmission.

6. The method according to claim 5, characterized in that The terminal device determines, according to the first downlink control information DCI, a channel access mode corresponding to the first uplink transmission, including: The terminal device determines the channel access mode corresponding to the first uplink transmission according to the channel access indication information in the first DCI.

7. The method according to claim 6, characterized in that The terminal device determines, according to the channel access indication information in the first DCI, a channel access mode corresponding to the first uplink transmission, including: If the channel access indication information indicates a second preset value, the terminal device determines that the channel access method corresponding to the first uplink transmission is the first channel access method; or, if the channel access indication information does not indicate the second preset value, the terminal device determines that the channel access method corresponding to the first uplink transmission is the second channel access method.

8. The method according to claim 6, characterized in that The terminal device determines, according to the channel access indication information in the first DCI, a channel access mode corresponding to the first uplink transmission, including: If the channel access indication information indicates a second preset value, the terminal device determines that the channel access method corresponding to the first uplink transmission is the first channel access method; or, if the channel access indication information indicates a third preset value, the terminal device determines that the channel access method corresponding to the first uplink transmission is the second channel access method, and the second preset value is different from the third preset value.

9. The method according to claim 6, characterized in that The channel access indication information includes at least one bit, and the at least one bit is used to indicate a channel access mode corresponding to the first uplink transmission.

10. The method according to claim 9, characterized in that The at least one bit includes 2 bits.

11. The method according to any one of claims 1 to 4, characterized in that The terminal device determines a channel access mode corresponding to the first uplink transmission, including: The terminal device determines the channel access method corresponding to the first uplink transmission according to a preset rule.

12. The method according to claim 11, characterized in that The terminal device determines, according to a preset rule, a channel access mode corresponding to the first uplink transmission, including at least one of the following: If the first time domain resource is within the second COT of the network device, and the terminal device receives a downlink signal or a downlink channel sent by the network device before the first time domain resource within the second COT, the terminal device determines that the channel access mode corresponding to the first uplink transmission is the second channel access mode; If the first time domain resource is within the second COT, and the terminal device does not receive a downlink signal or a downlink channel sent by the network device before the first time domain resource within the second COT, the terminal device determines that the channel access mode corresponding to the first uplink transmission is the first channel access mode; If the first time domain resource is not within the COT of the network device, the terminal device determines that the channel access mode corresponding to the first uplink transmission is the first channel access mode; If the first DCI is within the second COT, and the first time domain resource is not within the second COT, the terminal device determines that the channel access mode corresponding to the first uplink transmission is the first channel access mode; If the first DCI is within the second COT, and the first time domain resource is within the second COT, the terminal device determines that the channel access mode corresponding to the first uplink transmission is the second channel access mode; If the first DCI is within the second COT, and the first time domain resource is within the second COT, the terminal device determines the channel access mode corresponding to the first uplink transmission according to the channel access indication information in the first DCI; The first DCI is used to schedule the first uplink transmission.

13. The method according to any one of claims 1 to 12, characterized in that The first periodic channel occupancy is a channel occupancy configured by the terminal device and can be used by the terminal device to initiate COT, wherein, if the terminal device is an idle or inactive terminal device, the first periodic channel occupancy is configured by the network device through a system message; or, If the terminal device is a terminal device in a connected state, the first periodic channel occupancy is configured by the network device through the dedicated radio resource control RRC signaling of the terminal device.

14. A wireless communication method, characterized in that: include: The network device sends first downlink control information DCI to the terminal device, where the first DCI is used by the terminal device to determine a channel access mode corresponding to a first uplink transmission; The first DCI is used to schedule the first uplink transmission.

15. The method according to claim 14, characterized in that The method further comprises: The network device sends second configuration information to the terminal device, where the second configuration information is used to configure a first periodic channel occupancy, where the first periodic channel occupancy includes a channel occupancy for the terminal device to initiate a channel occupancy time COT.

16. The method according to claim 15, characterized in that The first periodic channel occupancy is a channel occupancy configured by the terminal device and can be used by the terminal device to initiate COT, wherein, if the terminal device is an idle or inactive terminal device, the first periodic channel occupancy is configured by the network device through a system message; or, If the terminal device is a terminal device in a connected state, the first periodic channel occupancy is configured by the network device through the dedicated radio resource control RRC signaling of the terminal device.

17. A terminal device, characterized in that: include: A first processing unit, configured to determine a first periodic channel occupancy, wherein the first periodic channel occupancy includes a channel occupancy for the terminal device to initiate a channel occupancy time COT, and the first periodic channel occupancy includes a first channel occupancy; The second processing unit is used to determine the channel access method corresponding to the first uplink transmission, the starting position occupied by the first channel is the same as the starting position of the first time domain resource, and the first time domain resource is the resource used by the terminal device to transmit the first uplink transmission.

18. A network device, characterized in that: include: A communication unit, configured to send first downlink control information DCI to a terminal device, wherein the first DCI is used by the terminal device to determine a channel access mode corresponding to a first uplink transmission; The first DCI is used to schedule the first uplink transmission.

19. A terminal device, characterized in that: include: A processor and a memory, the memory being used to store a computer program, the processor being used to call and run the computer program stored in the memory to execute the method according to any one of claims 1 to 13.

20. A network device, characterized in that: include: A processor and a memory, the memory being used to store a computer program, the processor being used to call and run the computer program stored in the memory to execute the method according to any one of claims 14 to 16.

21. A chip, characterized in that: include: A processor, configured to call and run a computer program from a memory, so that a device equipped with the chip executes a method as claimed in any one of claims 1 to 13 or a method as claimed in any one of claims 14 to 16.

22. A computer-readable storage medium, characterized in that: Used to store a computer program, the computer program causing a computer to execute the method according to any one of claims 1 to 13 or the method according to any one of claims 14 to 16.

23. A computer program product, characterized in that The method comprises computer program instructions which cause a computer to execute the method according to any one of claims 1 to 13 or the method according to any one of claims 14 to 16.

24. A computer program, characterized in that The computer program causes a computer to execute the method according to any one of claims 1 to 13 or the method according to any one of claims 14 to 16.

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