Channel access method and device

Abstract

Provided are a channel access method and device, which can determine a corresponding channel access mode when accessing a channel through an unlicensed spectrum on an FRX frequency band, thereby optimizing communication performance on the FRX frequency band. The channel access method comprises the following steps: the terminal equipment determines a first channel access mode corresponding to a first physical channel or a physical signal; wherein the first physical channel or physical signal comprises an uplink physical channel or physical signal on a first carrier, and / or a side physical channel or physical signal on the first carrier, and the first carrier is located on an unlicensed spectrum within a first frequency range; the first channel access mode comprises one of channel access without channel detection, channel access of a first type and channel access of a second type.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application is a divisional application of the patent application filed on January 8, 2021, with application number 202180089443.0 and application name “Channel Access Method and Device”. Technical Field

[0003] Embodiments of the present application relate to the field of communications, and more specifically, to a channel access method and device. Background Art

[0004] With the evolution of the New Radio (NR) system, it can support higher frequency ranges, such as the FRX (Frequency range X) band, which is 52.6GHz-71GHz. The Listen Before Talk (LBT) method on the unlicensed spectrum on the FRX band is different from the LBT method on the unlicensed spectrum on the FR1 band. Several methods such as omnidirectional LBT, directional LBT, receiving-side assisted LBT and no LBT may also be introduced on the FRX band. When communication devices (such as terminal devices and network devices) access the channel through the unlicensed spectrum on the FRX band, how to determine the corresponding channel access method is a problem that needs to be solved urgently. Summary of the invention

[0005] An embodiment of the present application provides a channel access method and device. When a terminal device and / or a network device accesses a channel through an unlicensed spectrum on the FRX frequency band, a corresponding channel access method can be determined, thereby optimizing the communication performance on the FRX frequency band.

[0006] In a first aspect, a channel access method is provided, the method comprising:

[0007] The terminal device determines a first channel access mode corresponding to a first physical channel or a physical signal; wherein,

[0008] The first physical channel or physical signal includes an uplink physical channel or physical signal on a first carrier, and / or the first physical channel or physical signal includes a sidelink physical channel or physical signal on the first carrier, and the first carrier is located on an unlicensed spectrum within a first frequency range;

[0009] The first channel access method includes one of the following:

[0010] Channel access without channel detection, first type of channel access, second type of channel access, channel access assisted by the receiving side and corresponding to the first type, channel access assisted by the receiving side and corresponding to the second type, channel access assisted by the receiving side and without channel detection.

[0011] Optionally, the first frequency range is an FRX frequency band.

[0012] In a second aspect, a channel access method is provided, the method comprising:

[0013] The network device determines a first channel access mode corresponding to the first physical channel or physical signal;

[0014] The first physical channel or physical signal includes a downlink physical channel or physical signal on a first carrier, and the first carrier is located in an unlicensed spectrum within a first frequency range;

[0015] The first channel access method includes one of the following:

[0016] Channel access without channel detection, first type of channel access, second type of channel access, channel access assisted by the receiving side and corresponding to the first type, channel access assisted by the receiving side and corresponding to the second type, channel access assisted by the receiving side and without channel detection.

[0017] Optionally, the first frequency range is an FRX frequency band.

[0018] In a third aspect, a channel access method is provided, the method comprising:

[0019] The first device determines to send a first physical channel or physical signal on a first carrier, the first physical channel or physical signal corresponds to a first channel access mode, and the first carrier is located in an unlicensed spectrum within a first frequency range;

[0020] The first device performs channel access on the first carrier according to the first channel access method;

[0021] After the channel access is successful, the first physical channel or physical signal is sent through the first carrier.

[0022] Optionally, the first frequency range is an FRX frequency band.

[0023] In a fourth aspect, a terminal device is provided for executing the method in the first aspect.

[0024] Specifically, the terminal device includes a functional module for executing the method in the above-mentioned first aspect.

[0025] In a fifth aspect, a network device is provided for executing the method in the second aspect.

[0026] Specifically, the network device includes a functional module for executing the method in the above second aspect.

[0027] In a sixth aspect, a channel access device is provided for executing the method in the third aspect.

[0028] Specifically, the channel access device includes a functional module for executing the method in the third aspect above.

[0029] In a seventh 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.

[0030] In an eighth 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.

[0031] In a ninth aspect, a channel access 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 third aspect.

[0032] In a tenth aspect, a device is provided for implementing the method in any one of the first to third aspects above.

[0033] Specifically, the apparatus includes: a processor, configured to call and run a computer program from a memory, so that a device equipped with the apparatus executes the method in any one of the first to third aspects described above.

[0034] In an eleventh aspect, a computer-readable storage medium is provided for storing a computer program, wherein the computer program enables a computer to execute the method in any one of the first to third aspects above.

[0035] In a twelfth 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 third aspects above.

[0036] In a thirteenth 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 third aspects described above.

[0037] Through the technical solution of the first aspect above, the terminal device can determine the first channel access method corresponding to the first physical channel or physical signal, and the first physical channel or physical signal includes an uplink physical channel or physical signal on the first carrier on the unlicensed spectrum included in the first frequency range, and / or the first physical channel or physical signal includes a sidelink physical channel or physical signal on the first carrier on the unlicensed spectrum included in the first frequency range. In other words, when the terminal device accesses the channel through the unlicensed spectrum on the FRX band, the corresponding channel access method can be determined, and the terminal device can use the corresponding channel access method when transmitting different channels or signals, thereby ensuring the friendly coexistence of different communication devices on the unlicensed spectrum and optimizing the communication performance on the FRX band.

[0038] Through the technical solution of the second aspect above, the network device can determine the first channel access method corresponding to the first physical channel or physical signal, and the first physical channel or physical signal includes a downlink physical channel or physical signal on the first carrier on the unlicensed spectrum included in the first frequency range. In other words, when the network device accesses the channel through the unlicensed spectrum on the FRX band, the corresponding channel access method can be determined, and the network device can use the corresponding channel access method when transmitting different channels or signals, thereby ensuring the friendly coexistence of different communication devices on the unlicensed spectrum and optimizing the communication performance on the FRX band.

[0039] Through the technical solution of the third aspect above, the first device determines to send a first physical channel or physical signal on a first carrier on an unlicensed spectrum included in a first frequency range, and the first physical channel or physical signal corresponds to a first channel access method. That is to say, when the first device accesses a channel through an unlicensed spectrum on the FRX band, it can determine the corresponding channel access method, and the first device can use the corresponding channel access method when transmitting different channels or signals, thereby ensuring the friendly coexistence of different communication devices on the unlicensed spectrum and optimizing the communication performance on the FRX band. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 It is a schematic diagram of a communication system architecture applied in an embodiment of the present application.

[0041] Figure 2 It is a schematic flowchart of a channel access method provided according to an embodiment of the present application.

[0042] Figure 3 It is a schematic diagram of a first type of channel access process provided in an embodiment of the present application.

[0043] Figure 4 It is a schematic diagram of another first type of channel access process provided by an embodiment of the present application.

[0044] Figure 5 It is a schematic flowchart of another channel access method provided according to an embodiment of the present application.

[0045] Figure 6 It is a schematic flowchart of another channel access method provided according to an embodiment of the present application.

[0046] Figure 7 It is a schematic diagram of a channel access with a fixed monitoring time slot length of 8us provided in an embodiment of the present application.

[0047] Figure 8 It is a schematic diagram of a channel access with a fixed monitoring time slot length of 13us provided in an embodiment of the present application.

[0048] Fig. 9 It is a schematic block diagram of a terminal device provided according to an embodiment of the present application.

[0049] Fig.10 It is a schematic block diagram of a network device provided according to an embodiment of the present application.

[0050] Fig.11 It is a schematic block diagram of a channel access device provided according to an embodiment of the present application.

[0051] Fig.12 It is a schematic block diagram of a communication device provided according to an embodiment of the present application.

[0052] Fig.13 It is a schematic block diagram of a device provided according to an embodiment of the present application.

[0053] Fig.14 It is a schematic block diagram of a communication system provided according to an embodiment of the present application. DETAILED DESCRIPTION

[0054] The following will describe the technical solutions in the embodiments of the present application in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not 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 this application.

[0055] 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.

[0056] 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.

[0057] 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.

[0058] 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.

[0059] 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.

[0060] 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.

[0061] 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.).

[0062] 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.

[0063] 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.

[0064] 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.

[0065] 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.

[0066] 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.

[0067] 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.

[0068] 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.

[0069] 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.

[0070] 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.

[0071] 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.

[0072] 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.

[0073] 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.

[0074] 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.

[0075] In the embodiments of the present application, "pre-definition" 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, pre-definition can refer to what is defined in the protocol.

[0076] In the embodiments 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, and the present application does not limit this.

[0077] In order to facilitate a better understanding of the embodiments of the present application, the high frequencies related to the present application are explained.

[0078] The research on NR system currently mainly considers two frequency bands, FR1 (Frequency range 1) and FR2 (Frequency range 2). The frequency domain ranges included in FR1 and FR2 are shown in Table 1.

[0079] Table 1

[0080] Frequency band definition Corresponding frequency range FR1 410MHz–7.125GHz FR2 24.25GHz–52.6GHz

[0081] With the evolution of NR systems, new frequency bands, i.e., high-frequency technologies, have also begun to be studied. The frequency domain range included in the new frequency band is shown in Table 2. For ease of description, this application uses FRX (Frequency range X) to represent it. It should be understood that the name of the frequency band should not constitute any limitation. For example, FRX can be FR3 (Frequency range 3).

[0082] Table 2

[0083] Frequency band definition Corresponding frequency range FRX 52.6GHz–71GHz

[0084] The FRX band includes both licensed and unlicensed spectrum. In other words, the FRX band includes both unshared and shared spectrum.

[0085] 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.

[0086] In order to allow various communication systems that use unlicensed 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 Transmit (LBT)" principle, that is, before a communication device sends a signal on a channel of unlicensed spectrum, it needs to first perform channel sensing. Only when the channel sensing result is that the channel is idle, the communication device can send a signal; if the channel sensing result of the communication device on the channel of unlicensed spectrum is that the channel is busy, the communication device cannot send a signal. For another example, in order to ensure fairness, in one transmission, the duration of a communication device using a channel of unlicensed spectrum for signal transmission cannot exceed a certain length of time. For another example, in order to avoid the power of the signal transmitted on the channel of unlicensed spectrum being too large and affecting the transmission of other important signals on the channel, the communication device needs to follow the limit of not exceeding the maximum power spectral density when using the channel of unlicensed spectrum for signal transmission.

[0087] The subcarrier spacing considered in the FRX band can be larger than that of FR2. The current candidate subcarrier spacing includes at least one of the following: 240kHz, 480kHz, and 960kHz. As an example, the corresponding parameter sets (Numerology) under these candidate subcarrier spacings are shown in Table 3 below. The parameter set may include: subcarrier spacing (SCS), symbol length, normal cyclic prefix (NCP) length, and extended cyclic prefix (ECP) length.

[0088] Table 3

[0089] Subcarrier spacing Symbol length NCP length ECP length Symbol with NCP length Slot length 240kHz 4.16μs 0.292μs 1.04μs 4.452μs 62.5μs 480kHz 2.08μs 0.146μs 0.52μs 2.226μs 31.25μs 960kHz 1.04μs 0.073μs 0.26μs 1.113μs 15.625μs

[0090] In order to facilitate a better understanding of the embodiments of the present application, the basic concepts of transmission on a shared spectrum related to the present application are explained.

[0091] Maximum Channel Occupancy Time (MCOT): refers to the maximum length of time allowed for signal transmission on a shared spectrum channel after successful channel sensing.

[0092] 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.

[0093] Channel Occupancy Time of Network Equipment (gNB / eNB-initiated COT): Also known as COT initiated by network equipment, it refers to the channel occupation time obtained by network equipment after successful channel detection on a shared spectrum channel. In addition to being used for network equipment transmission, COT initiated by network equipment can also be used for terminal equipment transmission under certain conditions.

[0094] UE-initiated COT: Also known as COT initiated by the UE, it refers to the channel occupancy time obtained by the UE after successful channel detection on a shared spectrum channel. 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.

[0095] 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.

[0096] 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.

[0097] Channel detection success: also called channel detection idleness. For example, the energy detection in the monitoring time slot of the channel is lower than the energy detection threshold.

[0098] Channel detection failure: also called channel detection busy. For example, the energy detection in the monitoring time slot of the channel is higher than or equal to the energy detection threshold.

[0099] In order to better understand the embodiments of the present application, channel access in the release 16 (Rel-16) NR-U system related to the present application is described.

[0100] In the Rel-16 NR-U system, from the perspective of system networking, channel detection includes two mechanisms. One is LBT based on load based equipment (LBE), also known as dynamic channel detection, dynamic channel access or dynamic channel occupancy. The other is LBT based on frame based equipment (FBE), also known as semi-static channel detection, semi-static channel access or semi-static channel occupancy.

[0101] In the channel access mechanism of LBE, the channel access modes include Type 1 channel access, Type 2A channel access, Type 2B channel access and Type 2C channel access.

[0102] In the channel access mechanism of FBE, the channel access modes include channel detection with a monitoring time slot length of 9 microseconds and no channel detection.

[0103] When a terminal device is dynamically scheduled for uplink transmission, the network device can carry channel access indication information in the scheduling information, such as downlink control information DCI, and the terminal device can determine the channel access method corresponding to the uplink transmission according to the channel access indication information sent by the network device. When a terminal device performs uplink transmission through pre-configured resources, the terminal device can perform channel access according to the preset channel access method.

[0104] In order to facilitate a better understanding of the embodiments of the present application, the channel access corresponding to the unlicensed spectrum on the FRX frequency band related to the present application is explained.

[0105] In the FRX frequency band, for countries and regions with LBT requirements, the LBT mode (i.e., channel access mode) can include omnidirectional LBT, directional LBT, receiving-side assisted LBT, and no LBT. Among them, the channel access mode without LBT may also be subject to certain conditions such as automatic transfer power control (ATPC), dynamic frequency selection (DFS), long-term interference detection or other interference elimination mechanisms. In addition, it is possible to switch between channel access with LBT and channel access without LBT.

[0106] For countries and regions that do not have LBT requirements, it is also necessary to consider whether to introduce certain conditions, such as whether to apply DFS, ATPC, long-term interference detection, limit a certain duty cycle, limit a certain transmit power, limit MCOT, etc.

[0107] Due to the relatively high frequency band, the LBT method on the unlicensed spectrum on the FRX band is different from the LBT method on the unlicensed spectrum on the FR1 band. In addition, several methods such as omnidirectional LBT, directional LBT, receiving-side auxiliary LBT and no LBT may be introduced on the FRX band. Accordingly, in a communication system deployed on the unlicensed spectrum on the FRX band, when communication devices such as network devices and terminal devices need to access the channel through the unlicensed spectrum, there is currently no clear solution on how to determine the corresponding channel access method and how to perform LBT.

[0108] Based on the above problems, the present application proposes a channel access solution. When the terminal device and / or network device accesses the channel through the unlicensed spectrum on the FRX band, the corresponding channel access method can be determined, thereby optimizing the communication performance on the FRX band.

[0109] The technical solution of the present application is described in detail below through specific embodiments.

[0110] Figure 2 is a schematic flow chart of a channel access method 200 according to an embodiment of the present application, such as Figure 2 As shown, the method 200 may include at least part of the following contents:

[0111] S210, the terminal device determines a first channel access method corresponding to a first physical channel or physical signal; wherein the first physical channel or physical signal includes an uplink physical channel or physical signal on a first carrier, and / or the first physical channel or physical signal includes a sidelink physical channel or physical signal on the first carrier, and the first carrier is located on an unlicensed spectrum within a first frequency range; the first channel access method includes one of the following: channel access without channel detection, a first type of channel access, a second type of channel access, a receiving side assisted and corresponding to the first type of channel access, a receiving side assisted and corresponding to the second type of channel access, a receiving side assisted and channel access without channel detection.

[0112] In an embodiment of the present application, the terminal device determines a first channel access method corresponding to a first physical channel or physical signal, which may include: the terminal device determines that the first channel access method is a channel access method for initiating channel occupancy for the first physical channel or physical signal, or the terminal device can transmit the first physical channel or physical signal after initiating channel occupancy and successfully accessing the channel using the first channel access method.

[0113] Specifically, the first physical channel or physical signal may be a first physical channel or a first physical signal. That is, S210 may specifically be: the terminal device may determine the first channel access method corresponding to the first physical channel according to the first information, wherein the first physical channel includes an uplink physical channel on the first carrier and / or a sidelink physical channel on the first carrier; or the terminal device may determine the first channel access method corresponding to the first physical signal according to the first information, wherein the first physical signal includes an uplink physical signal on the first carrier and / or a sidelink physical signal on the first carrier.

[0114] In some embodiments, the uplink physical channel on the first carrier may include but is not limited to at least one of the following:

[0115] Physical Uplink Shared Channel (PUSCH), Physical Uplink Control Channel (PUCCH), Physical Random Access Channel (PRACH).

[0116] In some embodiments, the sidelink physical channel on the first carrier may include but is not limited to at least one of the following:

[0117] Physical Sidelink Control Channel (PSCCH), Physical Sidelink Shared Channel (PSSCH), Physical Sidelink Feedback Channel (PSFCH).

[0118] In some embodiments, the first physical channel or physical signal may include but is not limited to at least one of the following:

[0119] Synchronization Signal Block (SSB) burst transmission opportunity, Sounding Reference Signal (SRS).

[0120] In the case of sidelink transmission, the SSB burst transmission opportunity may be, for example, a sidelink SSB (S-SSB). Optionally, the S-SSB includes a sidelink primary synchronization signal (S-PSS), a sidelink secondary synchronization signal (S-SSS), a physical sidelink broadcast channel (PSBCH), and a demodulation reference signal (DMRS) for the PSBCH.

[0121] It should be noted that SSB can also be called synchronization signal / physical broadcast channel block (SS / PBCH block). S-SSB is also called S-SS / PSBCH block.

[0122] It should be noted that, in the embodiment of the present application, the "preset rule" may be protocol agreed information. That is, the terminal device may determine the first channel access mode corresponding to the first physical channel or physical signal according to the protocol agreed information.

[0123] In the embodiments of the present application, "unlicensed spectrum" may also be referred to as "shared spectrum" or "unlicensed frequency band", which is not limited in the present application. In addition, in the embodiments of the present application, "channel access" may also be referred to as "LBT", and "channel access method" may also be referred to as "LBT method", which is not limited in the present application.

[0124] In some embodiments, the first frequency range may be the FRX frequency band, and its frequency range may be: 52.6 GHz-71 GHz. Of course, the first frequency range may also be other frequency bands higher than FR1 or FR2, which is not limited in the embodiments of the present application.

[0125] In some embodiments, the first type of channel access includes at least one of the following:

[0126] The first type of channel access corresponds to omni-directional channel detection and the first type of channel access corresponds to directional channel detection.

[0127] That is, the first type of channel access may correspond to omnidirectional LBT and / or directional LBT. The second type of channel access may also correspond to omnidirectional LBT and / or directional LBT.

[0128] In some embodiments, the first type of channel access is a channel access method that detects a random backoff of multiple listening time slots.

[0129] In some embodiments, the first type of channel access corresponding to omnidirectional channel detection may also be referred to as the first type of channel access, which is not limited in the present application.

[0130] In some embodiments, the second type of channel access includes at least one of the following:

[0131] The second type of channel access corresponding to omni-directional channel detection and the second type of channel access corresponding to directional channel detection.

[0132] That is, the second type of channel access may also correspond to omnidirectional LBT and / or directional LBT.

[0133] In some embodiments, the second type of channel access is a channel access method for detecting a fixed listening time slot length.

[0134] In some embodiments, the second type of channel access corresponding to omnidirectional channel detection may also be referred to as the second type of channel access, which is not limited in the present application.

[0135] In some embodiments, channel access is performed without channel detection. For example, if the gap between an uplink transmission opportunity and a downlink transmission opportunity does not exceed 16 microseconds, the terminal device may start sending the uplink transmission opportunity after the end of the downlink transmission opportunity without performing channel detection. As another example, if the terminal device determines that a first channel access method corresponding to a first physical channel or a physical signal on a first carrier on an unlicensed spectrum is channel access without performing channel detection, the terminal device may directly transmit the first physical channel or physical signal on the first carrier without performing channel detection.

[0136] In some embodiments, the receiving-side assisted channel access includes a channel detection method based on a request-response process. For example, the receiving-side assisted channel access includes a channel detection method based on the interaction of transmission request information and transmission response information.

[0137] As an example, during the communication process between the first device and the second device, before the first device transmits, it first sends a transmission request message to ask the second device whether it is ready for data transmission. After the second device receives the transmission request message, if the channel access process is successful, it can send a transmission response message to the first device to inform the first device that it is ready for data transmission. After receiving the transmission response message, the first device can transmit data to the second device. Alternatively, if the second device does not receive the transmission request message, or the second device receives the transmission request message but cannot send the transmission response message due to channel access failure, the second device will not send the transmission response message to the first device. If the first device does not receive the transmission response message from the second device, it can give up transmitting data to the second device.

[0138] In some embodiments, the receiving side assists and corresponds to the first type of channel access, including: the channel access performed to send the transmission request information is the first type of channel access, and / or the channel access performed to send the transmission response information is the first type of channel access.

[0139] In some embodiments, the receiving side assists and corresponds to the second type of channel access, including: the channel access performed to send the transmission request information is the second type of channel access, and / or the channel access performed to send the transmission response information is the second type of channel access.

[0140] In some embodiments, the channel access assisted by the receiving side and without channel detection includes: the channel access performed for sending the transmission request information is the channel access without channel detection, and / or the channel access performed for sending the transmission response information is the channel access without channel detection.

[0141] It should be noted that omnidirectional LBT may mean that when a communication device detects a channel in a monitoring time slot, the detected energy includes energy in all directions. Directional LBT may mean that when a communication device detects a channel in a monitoring time slot, the detected energy includes energy in one or some specific directions.

[0142] In some embodiments, the first type of channel access is a channel access method that detects a random backoff of a plurality of listening time slots.

[0143] As an example, Figure 3 As shown, the first type of channel access process includes the following steps:

[0144] (1) Set a counter N=Ninit, where Ninit is a random number uniformly distributed between 0 and Zmax, and the value of Zmax is greater than or equal to 3; perform a monitoring time slot detection on the channel with a time length of 8 μs, and after the monitoring time slot detection result is idle, execute step (4);

[0145] (2) If N>0, decrement the counter by 1, that is, N=N-1;

[0146] (3) Perform a 5 μs monitoring time slot detection on the channel. If the monitoring time slot detection result is idle, execute step (4); otherwise, execute step (5);

[0147] (4) If N = 0, end the channel access process; otherwise, execute step (2);

[0148] (5) Perform a monitoring time slot detection on the channel with a time length of 8 μs. If the monitoring time slot detection result is idle, execute step (3); otherwise, execute step (5).

[0149] As another example, Figure 4 As shown, the first type of channel access process includes the following steps:

[0150] (1) Set a counter N=Ninit, where Ninit is a random number uniformly distributed between 0 and Zmax, and the value of Zmax is greater than or equal to 3; perform a monitoring time slot detection on the channel with a time length of 8 μs, and after the monitoring time slot detection result is idle, execute step (4);

[0151] (2) If N>0, decrement the counter by 1, that is, N=N-1;

[0152] (3) Perform a 5 μs monitoring time slot detection on the channel. If the monitoring time slot detection result is idle, execute step (4); otherwise, execute step (5);

[0153] (4) If N = 0, end the channel access process; otherwise, execute step (2);

[0154] (5) Perform a monitoring time slot detection on the channel with a time length of 8 μs. If the monitoring time slot detection result is idle, execute step (4); otherwise, execute step (5).

[0155] In some embodiments, the value of Zmax is predefined or configured by a network device or determined by a communication device that initiates the first type of channel access procedure.

[0156] In some embodiments, the second type of channel access is a channel access method for detecting a fixed listening time slot length.

[0157] In some embodiments, the second type of channel access includes at least one of the following:

[0158] A channel access method in which a fixed monitoring time slot length is a first preset value;

[0159] A channel access method in which a fixed monitoring time slot length is a second preset value, wherein the second preset value is greater than the first preset value;

[0160] A channel access method without channel monitoring.

[0161] In some embodiments, the above S210 may specifically be:

[0162] The terminal device determines the first channel access method corresponding to the first physical channel or physical signal according to a preset rule.

[0163] In some embodiments, the first physical channel or physical signal includes a sidelink physical channel or physical signal on the first carrier. In this case, the preset rule includes one of the following rules:

[0164] In the case where the first physical channel or physical signal includes a PSSCH, the first channel access mode includes one of the following: a first type of channel access, a receiving side assisted and corresponding to the first type of channel access, a receiving side assisted and corresponding to the second type of channel access, a receiving side assisted and channel access without channel detection;

[0165] In the case where the first physical channel or physical signal includes only a PSFCH carrying HARQ-ACK information, the first channel access mode includes one of the following: channel access without channel detection, and a second type of channel access;

[0166] In the case where the first physical channel or physical signal includes a PSCCH, the first channel access mode includes one of the following: channel access without channel detection, a first type of channel access, and a second type of channel access;

[0167] In the case where the first physical channel or physical signal includes transmission request information, the first channel access mode includes one of the following: channel access without channel detection, first type of channel access, and second type of channel access;

[0168] In the case where the first physical channel or physical signal includes transmission response information, the first channel access method includes one of the following: channel access without channel detection, first type of channel access, and second type of channel access.

[0169] In some embodiments, the first physical channel includes a sidelink physical channel on the first carrier. In this case, the preset rule includes one of the following rules:

[0170] In the case where the first physical channel includes the PSSCH, the first channel access mode includes one of the following: a first type of channel access corresponding to omnidirectional channel detection, a first type of channel access corresponding to directional channel detection, a receiving side assisted and corresponding to the first type of channel access, a receiving side assisted and corresponding to the second type of channel access, a receiving side assisted and corresponding to the first type of channel access of directional channel detection, a receiving side assisted and corresponding to the second type of channel access of directional channel detection, a receiving side assisted and corresponding to the channel access of directional channel detection, a receiving side assisted and no channel detection;

[0171] In the case where the first physical channel includes only a PSFCH carrying hybrid automatic repeat request Acknowledgement (HARQ-ACK) information, the first channel access mode includes one of the following: channel access without channel detection, a second type of channel access, and a second type of channel access corresponding to directional channel detection;

[0172] In the case where the first physical channel includes the PSCCH, the first channel access mode includes one of the following: channel access without channel detection, a first type of channel access corresponding to omnidirectional channel detection, a first type of channel access corresponding to directional channel detection, a second type of channel access corresponding to omnidirectional channel detection, and a second type of channel access corresponding to directional channel detection;

[0173] In the case where the first physical channel includes transmission request information, the first channel access mode includes one of the following: channel access without channel detection, a first type of channel access corresponding to omnidirectional channel detection, a first type of channel access corresponding to directional channel detection, a second type of channel access corresponding to omnidirectional channel detection, and a second type of channel access corresponding to directional channel detection;

[0174] When the first physical channel includes transmission response information, the first channel access method includes one of the following: channel access without channel detection, a first type of channel access corresponding to omnidirectional channel detection, a first type of channel access corresponding to directional channel detection, a second type of channel access corresponding to omnidirectional channel detection, and a second type of channel access corresponding to directional channel detection.

[0175] In some embodiments, the first physical channel or physical signal includes an uplink physical channel or physical signal on the first carrier, and the preset rule includes one of the following rules:

[0176] In the case where the first physical channel or physical signal includes a PUSCH, the first channel access mode includes one of the following: a first type of channel access, a receiving side assisted and corresponding to the first type of channel access, a receiving side assisted and corresponding to the second type of channel access, a receiving side assisted and channel access without channel detection;

[0177] In the case where the first physical channel or physical signal includes a PRACH, the first channel access mode includes one of the following: channel access without channel detection, a second type of channel access, and a first type of channel access;

[0178] In the case where the first physical channel or physical signal includes only a PUCCH that does not carry HARQ-ACK information, or in the case where the first physical channel or physical signal includes only a PUSCH that does not carry HARQ-ACK information and has no data, the first channel access mode includes one of the following: a second type of channel access, a first type of channel access;

[0179] In the case where the first physical channel or physical signal includes only a PUCCH carrying HARQ-ACK information, or in the case where the first physical channel includes only a PUSCH carrying HARQ-ACK information and no data, the first channel access mode includes one of the following: channel access without channel detection, and a second type of channel access;

[0180] In the case where the first physical channel or physical signal includes transmission request information, the first channel access mode includes one of the following: channel access without channel detection, second type of channel access, first type of channel access;

[0181] In the case where the first physical channel or physical signal includes transmission response information, the first channel access method includes one of the following: channel access without channel detection, second type of channel access, and first type of channel access.

[0182] In some embodiments, the first physical channel includes an uplink physical channel on the first carrier; in this case, the preset rule includes one of the following rules:

[0183] In the case where the first physical channel includes PUSCH, the first channel access mode includes one of the following: a first type of channel access corresponding to omnidirectional channel detection, a first type of channel access corresponding to directional channel detection, a receiving side assisted and corresponding to the first type of channel access, a receiving side assisted and corresponding to the second type of channel access, a receiving side assisted and corresponding to the first type of channel access of directional channel detection, a receiving side assisted and corresponding to the second type of channel access of directional channel detection, a receiving side assisted and corresponding to the second type of channel access of directional channel detection, a receiving side assisted and channel access without channel detection;

[0184] In the case where the first physical channel includes PRACH, the first channel access mode includes one of the following: channel access without channel detection, a second type of channel access corresponding to omnidirectional channel detection, a second type of channel access corresponding to directional channel detection, a first type of channel access corresponding to omnidirectional channel detection, and a first type of channel access corresponding to directional channel detection;

[0185] In a case where the first physical channel includes only a PUCCH that does not carry HARQ-ACK information, or in a case where the first physical channel includes only a PUSCH that does not carry HARQ-ACK information and has no data, the first channel access mode includes one of the following: a second type of channel access corresponding to omnidirectional channel detection, a second type of channel access corresponding to directional channel detection, a first type of channel access corresponding to omnidirectional channel detection, and a first type of channel access corresponding to directional channel detection;

[0186] In a case where the first physical channel includes only a PUCCH carrying HARQ-ACK information, or in a case where the first physical channel includes only a PUSCH carrying HARQ-ACK information and no data, the first channel access mode includes one of the following: channel access without channel detection, a second type of channel access corresponding to omnidirectional channel detection, and a second type of channel access corresponding to directional channel detection;

[0187] In the case where the first physical channel includes transmission request information, the first channel access mode includes one of the following: channel access without channel detection, a first type of channel access corresponding to omnidirectional channel detection, a first type of channel access corresponding to directional channel detection, a second type of channel access corresponding to omnidirectional channel detection, and a second type of channel access corresponding to directional channel detection;

[0188] When the first physical channel includes transmission response information, the first channel access method includes one of the following: channel access without channel detection, a first type of channel access corresponding to omnidirectional channel detection, a first type of channel access corresponding to directional channel detection, a second type of channel access corresponding to omnidirectional channel detection, and a second type of channel access corresponding to directional channel detection.

[0189] In some embodiments, the preset rule includes one of the following rules:

[0190] In the case where the first physical channel or physical signal includes only the SRS, the first channel access mode includes one of the following: channel access without channel detection, second type of channel access, and first type of channel access;

[0191] In the case where the first physical channel or physical signal includes an SSB burst transmission opportunity, and the SSB burst transmission opportunity includes user data, the first channel access mode includes one of the following: a first type of channel access, a receiving side assisted and corresponding to the first type of channel access, a receiving side assisted and corresponding to the second type of channel access, a receiving side assisted and channel access without channel detection;

[0192] When the first physical channel or physical signal includes an SSB burst transmission opportunity and the SSB burst transmission opportunity does not include user data, the first channel access method includes one of the following: channel access without channel detection and a second type of channel access.

[0193] In some embodiments, the first physical signal includes an uplink physical signal on the first carrier and / or a sidelink physical signal on the first carrier; and the preset rule includes one of the following rules:

[0194] In the case where the first physical signal includes only the SRS, the first channel access mode includes one of the following: channel access without channel detection, a second type of channel access corresponding to omnidirectional channel detection, a second type of channel access corresponding to directional channel detection, a first type of channel access corresponding to omnidirectional channel detection, and a first type of channel access corresponding to directional channel detection;

[0195] In the case where the first physical signal includes an SSB burst transmission opportunity and the SSB burst transmission opportunity includes user data, the first channel access mode includes one of the following: a first type of channel access corresponding to omnidirectional channel detection, a first type of channel access corresponding to directional channel detection, a receiving side assisted and corresponding to the first type of channel access, a receiving side assisted and corresponding to the second type of channel access, a receiving side assisted and corresponding to the first type of channel access of directional channel detection, a receiving side assisted and corresponding to the second type of channel access of directional channel detection, a receiving side assisted and corresponding to the second type of channel access of directional channel detection, a receiving side assisted and corresponding to the channel access without channel detection;

[0196] When the first physical signal includes an SSB burst transmission opportunity and the SSB burst transmission opportunity does not include user data, the first channel access method includes one of the following: channel access without channel detection, a second type of channel access corresponding to omnidirectional channel detection, and a second type of channel access corresponding to directional channel detection.

[0197] In some embodiments, when the first physical channel includes only PUCCH carrying HARQ-ACK information, the first channel access mode is channel access without channel detection, which needs to meet certain conditions. Alternatively, when the first physical channel includes only PUSCH carrying HARQ-ACK information and no data, the first channel access mode is channel access without channel detection, which needs to meet certain conditions. Alternatively, when the first physical channel includes only PRACH, or the first physical signal includes only SRS, the first channel access mode is channel access without channel detection, which needs to meet certain conditions. The condition may be a predefined condition.

[0198] Taking the PUCCH transmission carrying HARQ-ACK information as an example, the condition includes: the duty cycle of the PUCCH transmission carrying HARQ-ACK information is 1 / 20. As another example, the condition includes: the time domain resources occupied by the PUCCH transmission carrying HARQ-ACK information in a period of 100 ms do not exceed 10 ms.

[0199] In some embodiments, the above S210 may specifically be:

[0200] The terminal device determines that the first physical channel or physical signal corresponds to the first channel access method based on the first indication information, wherein the first indication information is used to indicate the channel access method.

[0201] In some embodiments, the above S210 may specifically be:

[0202] The terminal device determines the first channel access method corresponding to the first physical channel or physical signal according to the first indication information and a preset rule, wherein the first indication information is used to indicate the channel access method.

[0203] Specifically, if the channel access mode corresponding to the first physical channel or physical signal indicated by the first indication information is different from the channel access mode corresponding to the first physical channel or physical signal defined by the preset rule, the terminal device determines that the first physical channel or physical signal corresponds to the first channel access mode according to the channel access mode indicated by the first indication information;

[0204] The first indication information indicates that the first physical channel or physical signal corresponds to the first channel access method, and the preset rule predefines that the first physical channel or physical signal corresponds to the second channel access method. That is, when the channel access method indicated by the first indication information is different from the channel access method indicated by the preset rule, the channel access method indicated by the first indication information shall prevail.

[0205] In some embodiments, the second channel access method includes one of the following:

[0206] Channel access without channel detection, first type of channel access, second type of channel access, channel access assisted by the receiving side and corresponding to the first type, channel access assisted by the receiving side and corresponding to the second type, channel access assisted by the receiving side and without channel detection.

[0207] In some embodiments, the first indication information is used to indicate a joint coded channel access method and / or an extended cyclic prefix (CPE) length. That is, through the joint coding method, the first indication information can indicate some other information, such as the CPE length, while indicating the channel access method.

[0208] In some embodiments, the channel detection beam type corresponding to the channel access method is determined based on high-level parameters configured by the network device or is indicated by the first indication information or is preset; and / or, the channel detection beam direction is determined based on high-level parameters configured by the network device or is indicated by the first indication information or is preset.

[0209] In some embodiments, the first indication information may be at least one of downlink control information (Downlink Control Information, DCI), sidelink control information (Sidelink Control Information, SCI), radio resource control (Radio Resource Control, RRC) and media access control control element (Media Access Control Control Element, MAC CE).

[0210] For example, the terminal device receives a DCI that schedules transmission of a first physical channel or physical signal, and the DCI includes the first indication information.

[0211] For another example, the terminal device receives an SCI for scheduling transmission of a first physical channel or a physical signal, and the SCI includes the first indication information.

[0212] In some embodiments, the channel detection beam type corresponding to the channel access method includes corresponding omnidirectional channel detection or corresponding directional channel detection.

[0213] It should be noted that the channel detection beam type may be omnidirectional or directional. In the directional case, the channel detection beam direction may be a specifically associated beam direction or a reference signal index or a transmission configuration indicator (TCI) information.

[0214] In some embodiments, the first indication information includes a first high-level parameter, and the terminal device can determine the first channel access method according to the first high-level parameter and a preset rule.

[0215] As an example, the terminal device is configured with directional channel detection. For example, the network device configures the channel detection mode corresponding to the terminal device as directional channel detection through the first high-level parameter. The terminal device determines the first channel access mode corresponding to the first physical channel or physical signal according to a preset rule, including at least one row shown in the following Table 4.

[0216] Table 4

[0217]

[0218] As another example, the terminal device is configured for omnidirectional channel detection or the terminal device is not configured for directional channel detection. For example, the network device configures the channel detection mode corresponding to the terminal device as omnidirectional channel detection through the first high-level parameter or the network device is not configured with the first high-level parameter corresponding to directional channel detection. The terminal device determines the first channel access mode corresponding to the first physical channel or physical signal according to a preset rule, including at least one row shown in the following Table 5.

[0219] Table 5

[0220]

[0221] It should be noted that, in the above Table 5, the first type of channel access can also be referred to as the first type of channel access corresponding to omnidirectional channel detection, and the second type of channel access can also be referred to as the second type of channel access corresponding to omnidirectional channel detection.

[0222] In some embodiments, the first frequency range may be the FR1 frequency band, and its frequency band range may be: 410 MHz-7.125 GHz. For example, when the first physical channel or physical signal includes a side physical channel or physical signal on the first carrier, the first frequency range may also be the FR1 frequency band. That is, in the embodiment of the present application, the unlicensed spectrum of the FR1 frequency band supports channel access corresponding to the side physical channel or physical signal.

[0223] Therefore, in an embodiment of the present application, the terminal device can determine the first channel access method corresponding to the first physical channel or physical signal according to the first indication information and / or the preset rule, and the first physical channel or physical signal includes an uplink physical channel or physical signal on the first carrier on the unlicensed spectrum included in the first frequency range, and / or the first physical channel or physical signal includes a sidelink physical channel or physical signal on the first carrier on the unlicensed spectrum included in the first frequency range. In other words, when the terminal device accesses the channel through the unlicensed spectrum on the FRX band, the corresponding channel access method can be determined, and the terminal device can use the corresponding channel access method when transmitting different channels or signals, thereby ensuring the friendly coexistence of different communication devices on the unlicensed spectrum and optimizing the communication performance on the FRX band.

[0224] Figure 5 is a schematic flow chart of a channel access method 300 according to an embodiment of the present application, such as Figure 5 As shown, the method 300 may include at least part of the following contents:

[0225] S310, the network device determines a first channel access method corresponding to a first physical channel or physical signal; wherein the first physical channel or physical signal includes a downlink physical channel or physical signal on a first carrier, and the first carrier is located on an unlicensed spectrum within a first frequency range; the first channel access method includes one of the following: channel access without channel detection, a first type of channel access, a second type of channel access, a receiving side assisted channel access corresponding to the first type, a receiving side assisted channel access corresponding to the second type, a receiving side assisted channel access without channel detection.

[0226] In an embodiment of the present application, the network device determines a first channel access method corresponding to a first physical channel or physical signal, which may include: the network device determines that the first channel access method is a channel access method for initiating channel occupancy for the first physical channel or physical signal, or the network device can transmit the first physical channel or physical signal after initiating channel occupancy using the first channel access method and successfully accessing the channel.

[0227] Specifically, the first physical channel or physical signal may be a first physical channel or a first physical signal. That is, S310 may specifically be: the network device may determine the first channel access method corresponding to the first physical channel according to a preset rule, wherein the first physical channel includes a downlink physical channel on the first carrier; or the network device may determine the first channel access method corresponding to the first physical signal according to a preset rule, wherein the first physical signal includes a downlink physical signal on the first carrier.

[0228] In some embodiments, the downlink physical channel on the first carrier may include but is not limited to at least one of the following:

[0229] Unicast Physical Downlink Shared Channel (PDSCH), Physical Downlink Control Channel (PDCCH).

[0230] In some embodiments, the downlink physical signal on the first carrier may include but is not limited to at least one of the following:

[0231] Channel State Information Reference Signal (CSI-RS), SSB burst transmission opportunity.

[0232] The SSB burst transmission opportunity may be, for example, SSB. Optionally, SSB includes a primary synchronization signal (PSS), a secondary synchronization signal (SSS), a physical broadcast channel (PBCH), and a DMRS for the PBCH.

[0233] It should be noted that SSB can also be called SS / PBCH block.

[0234] It should be noted that, in the embodiment of the present application, the "preset rule" may be protocol agreed information. That is, the network device may determine the first channel access mode corresponding to the first physical channel or physical signal according to the protocol agreed information.

[0235] In the embodiments of the present application, "unlicensed spectrum" may also be referred to as "shared spectrum" or "unlicensed frequency band", which is not limited in the present application. In addition, in the embodiments of the present application, "channel access" may also be referred to as "LBT", and "channel access method" may also be referred to as "LBT method", which is not limited in the present application.

[0236] In some embodiments, the first frequency range may be the FRX frequency band, and its frequency range may be: 52.6 GHz-71 GHz. Of course, the first frequency range may also be other frequency bands higher than FR1 or FR2, which is not limited in the embodiments of the present application.

[0237] In some embodiments, the first type of channel access includes at least one of the following:

[0238] The first type of channel access corresponds to omni-directional channel detection and the first type of channel access corresponds to directional channel detection.

[0239] That is, the first type of channel access may correspond to omnidirectional LBT and / or directional LBT. The second type of channel access may also correspond to omnidirectional LBT and / or directional LBT.

[0240] In some embodiments, the first type of channel access is a channel access method that detects a random backoff of multiple listening time slots.

[0241] In some embodiments, the first type of channel access corresponding to omnidirectional channel detection may also be referred to as the first type of channel access, which is not limited in the present application.

[0242] In some embodiments, the second type of channel access includes at least one of the following:

[0243] The second type of channel access corresponding to omni-directional channel detection and the second type of channel access corresponding to directional channel detection.

[0244] That is, the second type of channel access may also correspond to omnidirectional LBT and / or directional LBT.

[0245] In some embodiments, the second type of channel access is a channel access method for detecting a fixed listening time slot length.

[0246] In some embodiments, the second type of channel access corresponding to omnidirectional channel detection may also be referred to as the second type of channel access, which is not limited in the present application.

[0247] In some embodiments, channel access is performed without channel detection. For example, if the gap between an uplink transmission opportunity and a downlink transmission opportunity does not exceed 16 microseconds, the network device may start sending downlink transmission opportunities after the uplink transmission opportunity ends without performing channel detection. As another example, if the network device determines that the channel access method of a first carrier on an unlicensed spectrum is channel access without performing channel detection, the network device may directly transmit a first physical channel or a physical signal on the first carrier without performing channel detection.

[0248] In some embodiments, the receiving-side assisted channel access includes a channel detection method based on a request-response process. Optionally, the receiving-side assisted channel access includes a channel detection method based on the interaction of transmission request information and transmission response information.

[0249] As an example, during the communication process between the first device and the second device, before the first device transmits, it first sends a transmission request message to ask the second device whether it is ready for data transmission. After the second device receives the transmission request message, if the channel access process is successful, it can send a transmission response message to the first device to inform the first device that it is ready for data transmission. After receiving the transmission response message, the first device can transmit data to the second device. Alternatively, if the second device does not receive the transmission request message, or the second device receives the transmission request message but cannot send the transmission response message due to channel access failure, the second device will not send the transmission response message to the first device. If the first device does not receive the transmission response message from the second device, it can give up transmitting data to the second device.

[0250] In some embodiments, the receiving side assists and corresponds to the first type of channel access, including: the channel access performed to send the transmission request information is the first type of channel access, and / or the channel access performed to send the transmission response information is the first type of channel access.

[0251] In some embodiments, the receiving side assists and corresponds to the second type of channel access, including: the channel access performed to send the transmission request information is the second type of channel access, and / or the channel access performed to send the transmission response information is the second type of channel access.

[0252] In some embodiments, the channel access assisted by the receiving side and without channel detection includes: the channel access performed for sending the transmission request information is the channel access without channel detection, and / or the channel access performed for sending the transmission response information is the channel access without channel detection.

[0253] It should be noted that omnidirectional LBT may mean that when a communication device detects a channel in a monitoring time slot, the detected energy includes energy in all directions. Directional LBT may mean that when a communication device detects a channel in a monitoring time slot, the detected energy includes energy in one or some specific directions.

[0254] In some embodiments, the first type of channel access is a channel access method that detects a random backoff of a plurality of listening time slots.

[0255] As an example, Figure 3 As shown, the first type of channel access process includes the following steps:

[0256] (1) Set a counter N=Ninit, where Ninit is a random number uniformly distributed between 0 and Zmax, and the value of Zmax is greater than or equal to 3; perform a monitoring time slot detection on the channel with a time length of 8 μs, and after the monitoring time slot detection result is idle, execute step (4);

[0257] (2) If N>0, decrement the counter by 1, that is, N=N-1;

[0258] (3) Perform a 5 μs monitoring time slot detection on the channel. If the monitoring time slot detection result is idle, execute step (4); otherwise, execute step (5);

[0259] (4) If N = 0, end the channel access process; otherwise, execute step (2);

[0260] (5) Perform a monitoring time slot detection on the channel with a time length of 8 μs. If the monitoring time slot detection result is idle, execute step (3); otherwise, execute step (5).

[0261] As another example, Figure 4 As shown, the first type of channel access process includes the following steps:

[0262] (1) Set a counter N=Ninit, where Ninit is a random number uniformly distributed between 0 and Zmax, and the value of Zmax is greater than or equal to 3; perform a monitoring time slot detection on the channel with a time length of 8 μs, and after the monitoring time slot detection result is idle, execute step (4);

[0263] (2) If N>0, decrement the counter by 1, that is, N=N-1;

[0264] (3) Perform a 5 μs monitoring time slot detection on the channel. If the monitoring time slot detection result is idle, execute step (4); otherwise, execute step (5);

[0265] (4) If N = 0, end the channel access process; otherwise, execute step (2);

[0266] (5) Perform a monitoring time slot detection on the channel with a time length of 8 μs. If the monitoring time slot detection result is idle, execute step (4); otherwise, execute step (5).

[0267] In some embodiments, the value of Zmax is predefined or configured by a network device or determined by a communication device that initiates the first type of channel access procedure.

[0268] In some embodiments, the second type of channel access is a channel access method for detecting a fixed listening time slot length.

[0269] In some embodiments, the second type of channel access includes at least one of the following:

[0270] A channel access method in which a fixed monitoring time slot length is a first preset value;

[0271] A channel access method in which a fixed monitoring time slot length is a second preset value, wherein the second preset value is greater than the first preset value;

[0272] A channel access method without channel monitoring.

[0273] In some embodiments, the above S310 may specifically be:

[0274] The network device determines the first channel access mode corresponding to the first physical channel or physical signal according to a preset rule.

[0275] In some embodiments, the preset rule includes one of the following rules:

[0276] In the case where the first physical channel or physical signal includes a unicast PDSCH, the first channel access mode includes one of the following: a first type of channel access, a receiving side assisted and corresponding to the first type of channel access, a receiving side assisted and corresponding to the second type of channel access, a receiving side assisted and channel access without channel detection;

[0277] In the case where the first physical channel or physical signal includes a PDCCH, the first channel access mode includes one of the following: a first type of channel access, a receiving side assisted and corresponding to the first type of channel access, a receiving side assisted and corresponding to the second type of channel access, a receiving side assisted and channel access without channel detection;

[0278] In the case where the first physical channel or physical signal includes only the CSI-RS, the first channel access mode includes one of the following: channel access without channel detection, second type of channel access, and first type of channel access;

[0279] In the case where the first physical channel or physical signal includes an SSB burst transmission opportunity, and the SSB burst transmission opportunity includes a unicast PDSCH, the first channel access mode includes one of the following: a first type of channel access, a receiving side assisted and corresponding to the first type of channel access, a receiving side assisted and corresponding to the second type of channel access, a receiving side assisted and channel access without channel detection;

[0280] In the case where the first physical channel or physical signal includes an SSB burst transmission opportunity, and the SSB burst transmission opportunity does not include a unicast PDSCH, the first channel access mode includes one of the following: channel access without channel detection, and a second type of channel access;

[0281] In the case where the first physical channel or physical signal includes transmission request information, the first channel access mode includes one of the following: channel access without channel detection, first type of channel access, and second type of channel access;

[0282] In the case where the first physical channel or physical signal includes transmission response information, the first channel access method includes one of the following: channel access without channel detection, first type of channel access, and second type of channel access.

[0283] In some embodiments, the preset rule includes one of the following rules:

[0284] In the case where the first physical channel includes a unicast PDSCH, the first channel access mode includes one of the following: a first type of channel access corresponding to omnidirectional channel detection, a first type of channel access corresponding to directional channel detection, a receiving side assisted and corresponding to the first type of channel access, a receiving side assisted and corresponding to the second type of channel access, a receiving side assisted and corresponding to the first type of channel access of directional channel detection, a receiving side assisted and corresponding to the second type of channel access of directional channel detection, a receiving side assisted and corresponding to the second type of channel access of directional channel detection, a receiving side assisted and channel access without channel detection;

[0285] In the case where the first physical channel includes the PDCCH, the first channel access mode includes one of the following: a first type of channel access corresponding to omnidirectional channel detection, a first type of channel access corresponding to directional channel detection, a receiving side assisted and corresponding to the first type of channel access, a receiving side assisted and corresponding to the second type of channel access, a receiving side assisted and corresponding to the first type of channel access of directional channel detection, a receiving side assisted and corresponding to the second type of channel access of directional channel detection, a receiving side assisted and corresponding to the channel access of directional channel detection, a receiving side assisted and corresponding to the channel access without channel detection;

[0286] In the case where the first physical signal includes only the CSI-RS, the first channel access mode includes one of the following: channel access without channel detection, a second type of channel access corresponding to omnidirectional channel detection, a second type of channel access corresponding to directional channel detection, a first type of channel access corresponding to omnidirectional channel detection, and a first type of channel access corresponding to directional channel detection;

[0287] In the case where the first physical signal includes an SSB burst transmission opportunity, and the SSB burst transmission opportunity includes a unicast PDSCH, the first channel access mode includes one of the following: a first type of channel access corresponding to omnidirectional channel detection, a first type of channel access corresponding to directional channel detection, a receiving side assisted and corresponding to the first type of channel access, a receiving side assisted and corresponding to the second type of channel access, a receiving side assisted and corresponding to the first type of channel access of directional channel detection, a receiving side assisted and corresponding to the second type of channel access of directional channel detection, a receiving side assisted and corresponding to the second type of channel access of directional channel detection, a receiving side assisted and corresponding to the channel access without channel detection;

[0288] In a case where the first physical signal includes an SSB burst transmission opportunity, and the SSB burst transmission opportunity does not include a unicast PDSCH, the first channel access mode includes one of the following: channel access without channel detection, a second type of channel access corresponding to omnidirectional channel detection, and a second type of channel access corresponding to directional channel detection;

[0289] In the case where the first physical channel includes transmission request information, the first channel access mode includes one of the following: channel access without channel detection, a first type of channel access corresponding to omnidirectional channel detection, a first type of channel access corresponding to directional channel detection, a second type of channel access corresponding to omnidirectional channel detection, and a second type of channel access corresponding to directional channel detection;

[0290] When the first physical channel includes transmission response information, the first channel access method includes one of the following: channel access without channel detection, a first type of channel access corresponding to omnidirectional channel detection, a first type of channel access corresponding to directional channel detection, a second type of channel access corresponding to omnidirectional channel detection, and a second type of channel access corresponding to directional channel detection.

[0291] In some embodiments, when the first physical signal includes an SSB burst transmission opportunity and the SSB burst transmission opportunity does not include a unicast PDSCH, the first channel access mode is a channel access without channel detection, which needs to meet certain conditions. The condition may be a predefined condition. As an example, the condition includes: the duty cycle of the SSB burst transmission opportunity is 1 / 20. As another example, the condition includes: the time domain resources occupied by the SSB burst transmission opportunity within a period of 100 ms do not exceed 10 ms.

[0292] In some embodiments, when the first physical signal includes only CSI-RS, the first channel access mode is channel access without channel detection, which needs to meet certain conditions. For example, the condition is a predefined condition. As an example, the condition includes: the duty cycle of the first physical signal including only CSI-RS is 1 / 20. As another example, the condition includes: the time domain resources occupied by the first physical signal including only CSI-RS within a period of 100ms do not exceed 10ms.

[0293] Optionally, as an example, the network device determines the first channel access mode corresponding to the first physical channel or physical signal according to a preset rule, including at least one row shown in the following Table 6. Optionally, the network device can determine to use omnidirectional channel detection or directional channel detection.

[0294] Table 6

[0295]

[0296] Therefore, in an embodiment of the present application, the network device can determine the first channel access method corresponding to the first physical channel or physical signal according to a preset rule, and the first physical channel or physical signal includes a downlink physical channel or physical signal on the first carrier on the unlicensed spectrum included in the first frequency range. In other words, when the network device accesses the channel through the unlicensed spectrum on the FRX band, the corresponding channel access method can be determined, and the network device can use the corresponding channel access method when transmitting different channels or signals, thereby ensuring the friendly coexistence of different communication devices on the unlicensed spectrum and optimizing the communication performance on the FRX band.

[0297] Figure 6 is a schematic flow chart of a channel access method 400 according to an embodiment of the present application, such as Figure 6 As shown, the method 400 may include at least part of the following contents:

[0298] S410, the first device determines to send a first physical channel or physical signal on a first carrier, the first physical channel or physical signal corresponds to a first channel access mode, and the first carrier is located in an unlicensed spectrum within a first frequency range;

[0299] S420: The first device performs channel access on the first carrier according to the first channel access method;

[0300] S430: After the channel access is successful, send the first physical channel or physical signal through the first carrier.

[0301] In an embodiment of the present application, the first physical channel or physical signal corresponds to a first channel access method, which may include: the first channel access method is a channel access method for initiating channel occupancy for the first physical channel or physical signal, or, after initiating channel occupancy and successfully accessing the channel using the first channel access method, the first physical channel or physical signal can be transmitted.

[0302] Specifically, the first physical channel or physical signal may be a first physical channel or a first physical signal.

[0303] In some embodiments, the first device may be a terminal device. In this case, the first physical channel may include an uplink physical channel on the first carrier and / or a sidelink physical channel on the first carrier, and the first physical signal may include an uplink physical signal on the first carrier and / or a sidelink physical signal on the first carrier.

[0304] In some embodiments, the first device may also be a network device. In this case, the first physical channel includes a downlink physical channel on a first carrier, and the first physical signal includes a downlink physical signal on the first carrier.

[0305] In some embodiments, when the first device is a terminal device, the uplink physical channel on the first carrier may include but is not limited to at least one of the following:

[0306] PUSCH, PUCCH, PRACH.

[0307] In some embodiments, when the first device is a terminal device, the sidelink physical channel on the first carrier may include but is not limited to at least one of the following:

[0308] PSCCH, PSSCH, PSFCH.

[0309] In some embodiments, when the first device is a terminal device, the first physical signal may include but is not limited to at least one of the following:

[0310] SSB burst transmission opportunity, SRS.

[0311] In some embodiments, when the first device is a network device, the downlink physical channel on the first carrier may include but is not limited to at least one of the following:

[0312] Unicast PDSCH, PDCCH.

[0313] In some embodiments, when the first device is a terminal device, the downlink physical signal on the first carrier may include but is not limited to at least one of the following:

[0314] CSI-RS, SSB burst transmission opportunities.

[0315] In the case of sideline transmission, the SSB burst transmission opportunity may be, for example, S-SSB. Optionally, S-SSB includes S-PSS, S-SSS, PSBCH, and DMRS for PSBCH.

[0316] In the case of downlink transmission, the SSB burst transmission opportunity may be, for example, SSB. Optionally, SSB includes PSS, SSS, PBCH, and DMRS for PBCH.

[0317] It should be noted that SSB can also be called SS / PBCH block. S-SSB is also called S-SS / PSBCH block.

[0318] In the embodiments of the present application, "unlicensed spectrum" may also be referred to as "shared spectrum" or "unlicensed frequency band", which is not limited in the present application. In addition, in the embodiments of the present application, "channel access" may also be referred to as "LBT", and "channel access method" may also be referred to as "LBT method", which is not limited in the present application.

[0319] In some embodiments, the first frequency range may be the FRX frequency band, and its frequency range may be: 52.6 GHz-71 GHz. Of course, the first frequency range may also be other frequency bands higher than FR1 or FR2, which is not limited in the embodiments of the present application.

[0320] In some embodiments, the first type of channel access may also be considered as the first type of channel access corresponding to omni-directional channel detection. The second type of channel access may also be considered as the second type of channel access corresponding to omni-directional channel detection.

[0321] That is, the first type of channel access may correspond to omnidirectional LBT and / or directional LBT. The second type of channel access may also correspond to omnidirectional LBT and / or directional LBT.

[0322] It should be noted that omnidirectional LBT may mean that when a communication device detects a channel in a monitoring time slot, the detected energy includes energy in all directions. Directional LBT may mean that when a communication device detects a channel in a monitoring time slot, the detected energy includes energy in one or some specific directions.

[0323] In some embodiments, the first channel access mode is a first type of channel access, and the first type of channel access is a channel access process in which channel detection is a random backoff of multiple listening time slots.

[0324] In some embodiments, the first channel access method is a second type of channel access, and the second type of channel access is a channel access method for detecting a fixed listening time slot length.

[0325] In some embodiments, the channel access process corresponding to the first channel access method is:

[0326] Channel detection is a channel access process with a fixed monitoring time slot length; or, a channel access process without channel detection.

[0327] In some embodiments, the first type of channel access is a channel access method that detects a random backoff of a plurality of listening time slots.

[0328] In some embodiments, the channel access process corresponding to the first channel access mode is a channel access process of a plurality of monitoring time slots with random backoff when the channel is detected. Optionally, the first channel access mode is a first type of channel access.

[0329] In some embodiments, during the channel access process, if a channel detection failure occurs, the counter count does not decrease by one for the first monitoring time slot in which the channel detection succeeds after the channel detection failure. Figure 3 As shown, the first type of channel access process includes the following steps:

[0330] (1) Set a counter N=Ninit, where Ninit is a random number uniformly distributed between 0 and Zmax, and the value of Zmax is greater than or equal to 3; perform a monitoring time slot detection on the channel with a time length of 8 μs, and after the monitoring time slot detection result is idle, execute step (4);

[0331] (2) If N>0, decrement the counter by 1, that is, N=N-1;

[0332] (3) Perform a 5 μs monitoring time slot detection on the channel. If the monitoring time slot detection result is idle, execute step (4); otherwise, execute step (5);

[0333] (4) If N = 0, end the channel access process; otherwise, execute step (2);

[0334] (5) Perform a monitoring time slot detection on the channel with a time length of 8 μs. If the monitoring time slot detection result is idle, execute step (3); otherwise, execute step (5).

[0335] In some embodiments, during the channel access process, if a channel detection failure occurs, the counter count is reduced by one for the first monitoring time slot in which the channel detection is successful after the channel detection failure. Figure 4 As shown, the first type of channel access process includes the following steps:

[0336] (1) Set a counter N=Ninit, where Ninit is a random number uniformly distributed between 0 and Zmax, and the value of Zmax is greater than or equal to 3; perform a monitoring time slot detection on the channel with a time length of 8 μs, and after the monitoring time slot detection result is idle, execute step (4);

[0337] (2) If N>0, decrement the counter by 1, that is, N=N-1;

[0338] (3) Perform a 5 μs monitoring time slot detection on the channel. If the monitoring time slot detection result is idle, execute step (4); otherwise, execute step (5);

[0339] (4) If N = 0, end the channel access process; otherwise, execute step (2);

[0340] (5) Perform a monitoring time slot detection on the channel with a time length of 8 μs. If the monitoring time slot detection result is idle, execute step (4); otherwise, execute step (5).

[0341] In some embodiments, the value of Zmax is predefined or configured by a network device or determined by a communication device that initiates the first type of channel access procedure.

[0342] In some embodiments, the second type of channel access is a channel access method for detecting a fixed listening time slot length.

[0343] In some embodiments, the second type of channel access includes at least one of the following:

[0344] A channel access method in which a fixed monitoring time slot length is a first preset value;

[0345] A channel access method in which a fixed monitoring time slot length is a second preset value, wherein the second preset value is greater than the first preset value;

[0346] A channel access method without channel monitoring.

[0347] In some embodiments, the association relationship between the first channel access mode and the first gap includes at least one of the following:

[0348] If the length of the first gap is less than or equal to the first preset value, the channel access process corresponding to the first channel access mode is a channel access process without performing channel detection; or,

[0349] If the length of the first gap is greater than or equal to the first preset value, the channel access process corresponding to the first channel access mode is a channel access process with a fixed monitoring time slot length, and the fixed monitoring time slot length is the first preset value;

[0350] The first gap is a gap between a start position of the first physical channel or physical signal and an end position of a first transmission opportunity, and the first transmission opportunity is a previous transmission opportunity corresponding to the first physical channel or physical signal.

[0351] Optionally, the channel access process corresponding to the first channel access mode is a channel access process in which the channel is detected as a fixed monitoring time slot length, and the fixed monitoring time slot length is a first preset value.

[0352] In some other embodiments, the association relationship between the first channel access mode and the first gap includes at least one of the following:

[0353] If the length of the first gap is less than or equal to the first preset value, the channel access process corresponding to the first channel access mode is a channel access process without performing channel detection; or,

[0354] If the length of the first gap is greater than or equal to the first preset value and less than the second preset value, the channel access process corresponding to the first channel access mode is a channel access process with a fixed monitoring time slot length, and the fixed monitoring time slot length is the first preset value; or

[0355] If the length of the first gap is greater than or equal to the second preset value, the channel access process corresponding to the first channel access mode is a channel access process with a fixed monitoring time slot length, and the fixed monitoring time slot length is the second preset value;

[0356] The first gap is a gap between a start position of the first physical channel or physical signal and an end position of a first transmission opportunity, and the first transmission opportunity is a previous transmission opportunity corresponding to the first physical channel or physical signal.

[0357] In some embodiments, the channel access process corresponding to the first physical channel or physical signal includes a channel access process in which the channel is detected as a fixed listening time slot length, and the fixed listening time slot length is a first preset value or a second preset value, and the second preset value is greater than the first preset value.

[0358] In some embodiments, the first preset value and the second preset value include one of the following:

[0359] The first preset value is 16 μs, and the second preset value is 25 μs; or,

[0360] The first preset value is 8 μs, and the second preset value is 13 μs; or,

[0361] The first preset value is 16 μs, and the second preset value is 21 μs.

[0362] In some embodiments, the first preset value includes one of the following:

[0363] 5μs, 8μs, 9μs, 13μs, 16μs, 21μs, 25μs.

[0364] For example, in the channel access mechanism of LBE, the first preset value is one of 8 μs, 13 μs, 16 μs, 21 μs, and 25 μs. For another example, in the channel access mechanism of FBE, the first preset value is 5 μs or 9 μs.

[0365] In some embodiments, the length of the first gap is equal to the first preset value, the channel access process corresponding to the first channel access method is a channel access process without channel detection, and the length of the second transmission opportunity is less than or equal to a third preset value, wherein the second transmission opportunity is the transmission opportunity to which the first physical channel or physical signal belongs.

[0366] In some embodiments, the first preset value includes the length of an integer number of symbols, and / or the size of the first preset value is associated with the subcarrier spacing. For example, the size of the first preset value is different under different subcarrier spacings. As an example, when the subcarrier spacing corresponds to 960kHz, the first preset value includes the length of 8 symbols; when the subcarrier spacing corresponds to 480kHz, the first preset value includes the length of 4 symbols; when the subcarrier spacing corresponds to 240kHz, the first preset value includes the length of 2 symbols; when the subcarrier spacing corresponds to 120kHz, the first preset value includes the length of 1 symbol.

[0367] In some embodiments, the second preset value includes the length of an integer number of symbols, and / or the size of the second preset value is associated with the subcarrier spacing. For example, the size of the second preset value is different under different subcarrier spacings. As an example, when the subcarrier spacing corresponds to 960kHz, the second preset value includes the length of 12 symbols; when the subcarrier spacing corresponds to 480kHz, the second preset value includes the length of 6 symbols; when the subcarrier spacing corresponds to 240kHz, the second preset value includes the length of 3 symbols; when the subcarrier spacing corresponds to 120kHz, the second preset value includes the length of 2 symbols. As another example, when the subcarrier spacing corresponds to 960kHz, the first preset value includes the length of 8 symbols; when the subcarrier spacing corresponds to 480kHz, the first preset value includes the length of 4 symbols; when the subcarrier spacing corresponds to 120kHz, the first preset value includes 1 symbol. As another example, when the subcarrier spacing corresponds to 960kHz, the first preset value includes a length of 12 symbols; when the subcarrier spacing corresponds to 480kHz, the first preset value includes a length of 6 symbols; when the subcarrier spacing corresponds to 240kHz, the first preset value includes a length of 3 symbols; when the subcarrier spacing corresponds to 120kHz, the first preset value includes a length of 2 symbols.

[0368] In some embodiments, the third preset value includes a length of an integer number of symbols, and / or the size of the third preset value is associated with the subcarrier spacing. For example, the size of the third preset value is different under different subcarrier spacings. As an example, if the subcarrier spacing corresponding to the second transmission opportunity is 120kHz, the third preset value includes a length of 16 symbols; if the subcarrier spacing corresponding to the second transmission opportunity is 480kHz, the third preset value includes a length of 64 symbols; if the subcarrier spacing corresponding to the second transmission opportunity is 960kHz, the third preset value includes a length of 128 symbols. As another example, if the subcarrier spacing corresponding to the second transmission opportunity is 120kHz, the third preset value includes a length of 2 symbols; if the subcarrier spacing corresponding to the second transmission opportunity is 480kHz, the third preset value includes a length of 8 symbols; if the subcarrier spacing corresponding to the second transmission opportunity is 960kHz, the third preset value includes a length of 16 symbols.

[0369] In some embodiments, the first gap includes a length of an integer number of symbols, and / or the size of the first gap is associated with the subcarrier spacing. For example, the size of the first gap is different under different subcarrier spacings. As an example, when the subcarrier spacing corresponds to 960kHz, the first gap includes a length of 8 symbols; when the subcarrier spacing corresponds to 480kHz, the first gap includes a length of 4 symbols; when the subcarrier spacing corresponds to 240kHz, the first preset value includes a length of 2 symbols; when the subcarrier spacing corresponds to 120kHz, the first gap includes a length of 1 symbol.

[0370] In some embodiments, the first channel access mode is a second type of channel access.

[0371] As an example, a channel access method with a fixed listening time slot length of 8 μs is as follows Figure 7 As shown. The starting position of the 8μs listening time slot includes a listening time slot of 3μs in length, and the ending position includes a listening time slot of 5μs in length. If the detection results of the two listening time slots are both idle, LBT is considered to be successful, otherwise LBT is considered to have failed. As an example, if 1μs of energy detection is lower than the threshold in the 3μs listening time slot, the detection result of the listening time slot is considered to be idle; if 2μs of energy detection is lower than the threshold in the 5μs listening time slot, the detection result of the listening time slot is considered to be idle.

[0372] As an example, a channel access method with a fixed listening time slot length of 13 μs is as follows Figure 8As shown. The start position and the end position of the 13μs listening time slot each include a listening time slot of 5μs in length. If the detection results of the two listening time slots are both idle, LBT is considered successful, otherwise LBT is considered failed. As an example, if 2μs of energy detection is lower than the threshold in a 5μs listening time slot, the detection result of the listening time slot is considered to be idle.

[0373] In some embodiments, the first device performs channel access on the first carrier according to the first channel access method, including:

[0374] The first device performs channel access on the first carrier according to omni-directional channel detection and the first channel access mode; or,

[0375] The first device performs channel access on the first carrier according to directional channel detection and the first channel access mode.

[0376] Therefore, in an embodiment of the present application, the first device determines to send a first physical channel or physical signal on a first carrier on an unlicensed spectrum included in a first frequency range, and the first physical channel or physical signal corresponds to a first channel access method. That is, when the first device accesses a channel through an unlicensed spectrum on the FRX band, it can determine a corresponding channel access method, and the first device can use the corresponding channel access method when transmitting different channels or signals, thereby ensuring friendly coexistence of different communication devices on the unlicensed spectrum and optimizing communication performance on the FRX band.

[0377] Combination of the above Figures 2 to 8 , describes in detail the method embodiment of the present application, and the following is combined with Figures 9 to 14 , the device embodiments of the present application are described in detail. It should be understood that the device embodiments and the method embodiments correspond to each other, and similar descriptions can refer to the method embodiments.

[0378] Fig. 9 FIG. 5 shows a schematic block diagram of a terminal device 500 according to an embodiment of the present application. Fig. 9 As shown, the terminal device 500 includes:

[0379] The processing unit 510 is configured to determine a first channel access mode corresponding to a first physical channel or a physical signal; wherein:

[0380] The first physical channel or physical signal includes an uplink physical channel or physical signal on a first carrier, and / or the first physical channel or physical signal includes a sidelink physical channel or physical signal on the first carrier, and the first carrier is located on an unlicensed spectrum within a first frequency range;

[0381] The first channel access method includes one of the following:

[0382] Channel access without channel detection, first type of channel access, second type of channel access, channel access assisted by the receiving side and corresponding to the first type, channel access assisted by the receiving side and corresponding to the second type, channel access assisted by the receiving side and without channel detection.

[0383] In some embodiments, the first type of channel access includes at least one of the following:

[0384] The first type of channel access corresponds to omni-directional channel detection and the first type of channel access corresponds to directional channel detection.

[0385] In some embodiments, the second type of channel access includes at least one of the following:

[0386] The second type of channel access corresponding to omni-directional channel detection and the second type of channel access corresponding to directional channel detection.

[0387] In some embodiments, the first type of channel access is a channel access method that detects a random backoff of multiple listening time slots.

[0388] In some embodiments, the second type of channel access is a channel access method for detecting a fixed listening time slot length.

[0389] In some embodiments, the processing unit 510 is specifically configured to:

[0390] The first channel access mode corresponding to the first physical channel or physical signal is determined according to a preset rule.

[0391] In some embodiments, the first physical channel or physical signal includes a sidelink physical channel or physical signal on the first carrier, and the preset rule includes one of the following rules:

[0392] In the case where the first physical channel or physical signal includes a physical side shared channel PSSCH, the first channel access mode includes one of the following: a first type of channel access, a receiving side assisted and corresponding to the first type of channel access, a receiving side assisted and corresponding to the second type of channel access, a receiving side assisted and channel access without channel detection;

[0393] In the case where the first physical channel or physical signal includes only a physical sideline feedback channel PSFCH carrying hybrid automatic repeat request-acknowledgement HARQ-ACK information, the first channel access mode includes one of the following: channel access without channel detection, and a second type of channel access;

[0394] In the case where the first physical channel or physical signal includes a physical side control channel PSCCH, the first channel access mode includes at least one of the following: channel access without channel detection, a first type of channel access, and a second type of channel access;

[0395] In the case where the first physical channel or physical signal includes transmission request information, the first channel access mode includes one of the following: channel access without channel detection, first type of channel access, and second type of channel access;

[0396] In the case where the first physical channel or physical signal includes transmission response information, the first channel access method includes one of the following: channel access without channel detection, first type of channel access, and second type of channel access.

[0397] In some embodiments, the first physical channel or physical signal includes an uplink physical channel or physical signal on the first carrier, and the preset rule includes one of the following rules:

[0398] In the case where the first physical channel or physical signal includes a physical uplink shared channel PUSCH, the first channel access mode includes one of the following: a first type of channel access, a receiving side assisted and corresponding to the first type of channel access, a receiving side assisted and corresponding to the second type of channel access, a receiving side assisted and channel access without channel detection;

[0399] In the case where the first physical channel or physical signal includes a physical random access channel PRACH, the first channel access mode includes one of the following: channel access without channel detection, a second type of channel access, and a first type of channel access;

[0400] In the case where the first physical channel or physical signal includes only a physical uplink control channel PUCCH that does not carry HARQ-ACK information, or in the case where the first physical channel or physical signal includes only a PUSCH that does not carry HARQ-ACK information and has no data, the first channel access mode includes one of the following: a second type of channel access, a first type of channel access;

[0401] In the case where the first physical channel or physical signal includes only a PUCCH carrying HARQ-ACK information, or in the case where the first physical channel includes only a PUSCH carrying HARQ-ACK information and no data, the first channel access mode includes one of the following: channel access without channel detection, and a second type of channel access;

[0402] In the case where the first physical channel or physical signal includes transmission request information, the first channel access mode includes one of the following: channel access without channel detection, second type of channel access, first type of channel access;

[0403] In the case where the first physical channel or physical signal includes transmission response information, the first channel access method includes one of the following: channel access without channel detection, second type of channel access, and first type of channel access.

[0404] In some embodiments, the preset rule includes one of the following rules:

[0405] In the case where the first physical channel or physical signal includes only a sounding reference signal SRS, the first channel access mode includes one of the following: channel access without channel detection, a second type of channel access, and a first type of channel access;

[0406] In the case where the first physical channel or physical signal includes a synchronization signal block SSB burst transmission opportunity, and the SSB burst transmission opportunity includes user data, the first channel access mode includes one of the following: a first type of channel access, a receiving side assisted and corresponding to the first type of channel access, a receiving side assisted and corresponding to the second type of channel access, a receiving side assisted and channel access without channel detection;

[0407] When the first physical channel or physical signal includes an SSB burst transmission opportunity and the SSB burst transmission opportunity does not include user data, the first channel access method includes one of the following: channel access without channel detection and a second type of channel access.

[0408] In some embodiments, the processing unit 510 is specifically configured to:

[0409] Determine, according to first indication information, that the first physical channel or physical signal corresponds to the first channel access mode, wherein the first indication information is used to indicate the channel access mode.

[0410] In some embodiments, the processing unit 510 is specifically configured to:

[0411] The first channel access mode corresponding to the first physical channel or physical signal is determined according to the first indication information and a preset rule, wherein the first indication information is used to indicate the channel access mode.

[0412] In some embodiments, the processing unit 510 is specifically configured to:

[0413] If the channel access mode corresponding to the first physical channel or physical signal indicated by the first indication information is different from the channel access mode corresponding to the first physical channel or physical signal defined by the preset rule, determining that the first physical channel or physical signal corresponds to the first channel access mode according to the channel access mode indicated by the first indication information;

[0414] The first indication information indicates that the first physical channel or physical signal corresponds to the first channel access method, and the preset rule predefines that the first physical channel or physical signal corresponds to the second channel access method.

[0415] In some embodiments, the second channel access method includes one of the following:

[0416] Channel access without channel detection, first type of channel access, second type of channel access, channel access assisted by the receiving side and corresponding to the first type, channel access assisted by the receiving side and corresponding to the second type, channel access assisted by the receiving side and without channel detection.

[0417] In some embodiments, the first type of channel access includes at least one of the following:

[0418] The first type of channel access corresponds to omni-directional channel detection and the first type of channel access corresponds to directional channel detection.

[0419] In some embodiments, the second type of channel access includes at least one of the following:

[0420] The second type of channel access corresponding to omni-directional channel detection and the second type of channel access corresponding to directional channel detection.

[0421] In some embodiments, the first indication information is used to indicate a joint coded channel access method and / or to extend the cyclic prefix CPE length.

[0422] In some embodiments, the channel detection beam type corresponding to the channel access mode is determined based on a high-level parameter configured by the network device or is indicated by the first indication information or is preset; and / or,

[0423] The channel detection beam direction is determined based on a high-level parameter configured by the network device or is indicated by the first indication information or is preset.

[0424] In some embodiments, the channel detection beam type corresponding to the channel access method includes corresponding omnidirectional channel detection or corresponding directional channel detection.

[0425] In some embodiments, the processing unit may be one or more processors.

[0426] It should be understood that the terminal device 500 according to the embodiment of the present application may correspond to the terminal device in the method embodiment of the present application, and the above and other operations and / or functions of each unit in the terminal device 300 are respectively to implement Figure 2 For the sake of brevity, the corresponding process of the terminal device in the method 200 is not repeated here.

[0427] Fig.10 FIG. 6 shows a schematic block diagram of a network device 600 according to an embodiment of the present application. Fig.10 As shown, the network device 600 includes:

[0428] The processing unit 610 is configured to determine a first channel access mode corresponding to a first physical channel or a physical signal;

[0429] The first physical channel or physical signal includes a downlink physical channel or physical signal on a first carrier, and the first carrier is located in an unlicensed spectrum within a first frequency range;

[0430] In some embodiments, the first channel access method includes one of the following:

[0431] Channel access without channel detection, first type of channel access, second type of channel access, channel access assisted by the receiving side and corresponding to the first type, channel access assisted by the receiving side and corresponding to the second type, channel access assisted by the receiving side and without channel detection.

[0432] In some embodiments, the first type of channel access includes at least one of the following:

[0433] The first type of channel access corresponds to omni-directional channel detection and the first type of channel access corresponds to directional channel detection.

[0434] In some embodiments, the second type of channel access includes at least one of the following:

[0435] The second type of channel access corresponding to omni-directional channel detection and the second type of channel access corresponding to directional channel detection.

[0436] In some embodiments, the first type of channel access is a channel access method that detects a random backoff of multiple listening time slots.

[0437] In some embodiments, the second type of channel access is a channel access method for detecting a fixed listening time slot length.

[0438] In some embodiments, the processing unit 610 is specifically configured to:

[0439] The first channel access mode corresponding to the first physical channel or physical signal is determined according to a preset rule.

[0440] In some embodiments, the preset rule includes one of the following rules:

[0441] In the case where the first physical channel or physical signal includes a unicast physical downlink shared channel PDSCH, the first channel access mode includes one of the following: a first type of channel access, a receiving side assisted and corresponding to the first type of channel access, a receiving side assisted and corresponding to the second type of channel access, a receiving side assisted and channel access without channel detection;

[0442] In the case where the first physical channel or physical signal includes a physical downlink control channel PDCCH, the first channel access mode includes one of the following: a first type of channel access, a receiving side assisted and corresponding to the first type of channel access, a receiving side assisted and corresponding to the second type of channel access, a receiving side assisted and channel access without channel detection;

[0443] In the case where the first physical channel or physical signal includes only a channel state information reference signal CSI-RS, the first channel access mode includes one of the following: channel access without channel detection, a second type of channel access, and a first type of channel access;

[0444] In the case where the first physical channel or physical signal includes a synchronization signal block SSB burst transmission opportunity, and the SSB burst transmission opportunity includes a unicast PDSCH, the first channel access mode includes one of the following: a first type of channel access, a receiving side assisted and corresponding to the first type of channel access, a receiving side assisted and corresponding to the second type of channel access, a receiving side assisted and channel access without channel detection;

[0445] In the case where the first physical channel or physical signal includes an SSB burst transmission opportunity, and the SSB burst transmission opportunity does not include a unicast PDSCH, the first channel access mode includes one of the following: channel access without channel detection, and a second type of channel access;

[0446] In the case where the first physical channel or physical signal includes transmission request information, the first channel access mode includes one of the following: channel access without channel detection, first type of channel access, and second type of channel access;

[0447] In the case where the first physical channel or physical signal includes transmission response information, the first channel access method includes one of the following: channel access without channel detection, first type of channel access, and second type of channel access.

[0448] In some embodiments, the processing unit may be one or more processors.

[0449] It should be understood that the network device 600 according to the embodiment of the present application may correspond to the network device in the method embodiment of the present application, and the above and other operations and / or functions of each unit in the network device 600 are respectively to implement Figure 5 For the sake of brevity, the corresponding processes of the network device in the method 300 are not repeated here.

[0450] Fig.11 FIG. 7 is a schematic block diagram of a channel access device 700 according to an embodiment of the present application. Fig.11 As shown, the channel access device 700 includes: a processing unit 710 and a communication unit 720, wherein:

[0451] The processing unit 710 is configured to determine to send a first physical channel or a physical signal on a first carrier, the first physical channel or the physical signal corresponds to a first channel access mode, and the first carrier is located in an unlicensed spectrum within a first frequency range;

[0452] The processing unit 710 is configured to perform channel access on the first carrier according to the first channel access method;

[0453] The communication unit 720 is configured to send the first physical channel or physical signal through the first carrier after the channel access is successful.

[0454] In some embodiments, the channel access process corresponding to the first channel access method is:

[0455] Channel detection is a channel access process with a fixed monitoring time slot length; or,

[0456] Channel access process without channel detection.

[0457] In some embodiments, if the length of the first gap is less than or equal to the first preset value, the channel access process corresponding to the first channel access mode is a channel access process without performing channel detection;

[0458] The first gap is a gap between a start position of the first physical channel or physical signal and an end position of a first transmission opportunity, and the first transmission opportunity is a previous transmission opportunity corresponding to the first physical channel or physical signal.

[0459] In some embodiments, the channel access process corresponding to the first channel access method is a channel access process in which the channel is detected as a fixed monitoring time slot length, and the fixed monitoring time slot length is a first preset value.

[0460] In some embodiments, if the length of the first gap is greater than or equal to the first preset value, the channel access process corresponding to the first channel access method is a channel access process in which the channel is detected as a fixed listening time slot length, and the fixed listening time slot length is the first preset value.

[0461] In some embodiments, if the length of the first gap is greater than or equal to the first preset value and less than the second preset value, the channel access process corresponding to the first channel access method is a channel access process with a fixed monitoring time slot length, and the fixed monitoring time slot length is the first preset value; or,

[0462] If the length of the first gap is greater than or equal to the second preset value, the channel access process corresponding to the first channel access mode is a channel access process with a fixed monitoring time slot length, and the fixed monitoring time slot length is the second preset value; or,

[0463] If the length of the first gap is less than or equal to the first preset value, the channel access process corresponding to the first channel access mode is a channel access process without performing channel detection;

[0464] The first gap is a gap between a start position of the first physical channel or physical signal and an end position of a first transmission opportunity, and the first transmission opportunity is a previous transmission opportunity corresponding to the first physical channel or physical signal.

[0465] In some embodiments, the channel access process corresponding to the first physical channel or physical signal includes a channel access process in which the channel is detected as a fixed listening time slot length, and the fixed listening time slot length is a first preset value or a second preset value, and the second preset value is greater than the first preset value.

[0466] In some embodiments, the length of the first gap is equal to the first preset value, the channel access process corresponding to the first channel access method is a channel access process without channel detection, and the length of the second transmission opportunity is less than or equal to a third preset value, wherein the second transmission opportunity is the transmission opportunity to which the first physical channel or physical signal belongs.

[0467] In some embodiments, the first preset value is 16 μs, and the second preset value is 25 μs; or,

[0468] The first preset value is 8 μs, and the second preset value is 13 μs; or,

[0469] The first preset value is 16 μs, and the second preset value is 21 μs.

[0470] In some embodiments, the first preset value includes one of the following:

[0471] 5μs, 8μs, 9μs, 13μs, 16μs, 21μs, 25μs.

[0472] In some embodiments, the first preset value includes a length of an integer number of symbols, and / or the size of the first preset value is related to the subcarrier spacing.

[0473] In some embodiments, the second preset value includes a length of an integer number of symbols, and / or the size of the second preset value is related to the subcarrier spacing.

[0474] In some embodiments, the third preset value includes a length of an integer number of symbols, and / or the size of the third preset value is associated with the subcarrier spacing.

[0475] In some embodiments, the first gap comprises a length of an integer number of symbols, and / or a size of the first gap is associated with a subcarrier spacing.

[0476] In some embodiments, the first channel access mode is a first type of channel access, and the first type of channel access is a channel access process in which channel detection is a random backoff of multiple listening time slots.

[0477] In some embodiments, during the channel access process, if a channel detection failure occurs, the counter does not decrease by one for the first monitoring time slot in which the channel detection is successful after the channel detection failure; or,

[0478] During the channel access process, if a channel detection failure is encountered, the counter is decremented by one for the first monitoring time slot in which the channel detection is successful after the channel detection failure.

[0479] In some embodiments, the first channel access method is a second type of channel access, and the second type of channel access is a channel access method for detecting a fixed listening time slot length.

[0480] In some embodiments, the processing unit 710 is specifically configured to:

[0481] Performing channel access on the first carrier according to the omnidirectional channel detection mode and the first channel access mode; or,

[0482] Channel access is performed on the first carrier according to a directional channel detection mode and the first channel access mode.

[0483] In some embodiments, the communication unit may be a communication interface or a transceiver, or an input / output interface of a communication chip or a system on chip. The processing unit may be one or more processors.

[0484] It should be understood that the channel access device 700 according to the embodiment of the present application may correspond to the first device in the method embodiment of the present application, and the above and other operations and / or functions of each unit in the channel access device 700 are respectively to implement Figure 6 For the sake of brevity, the corresponding process of the first device in the method 400 is not repeated here.

[0485] Fig.12It is a schematic structural diagram of a communication device 800 provided in an embodiment of the present application. Fig.12 The communication device 800 shown includes a processor 810, and the processor 810 can call and run a computer program from a memory to implement the method in the embodiment of the present application.

[0486] In some embodiments, Fig.12 As shown, the communication device 800 may further include a memory 820. The processor 810 may call and run a computer program from the memory 820 to implement the method in the embodiment of the present application.

[0487] The memory 820 may be a separate device independent of the processor 810 , or may be integrated into the processor 810 .

[0488] In some embodiments, Fig.12 As shown, the communication device 800 may further include a transceiver 830, and the processor 810 may control the transceiver 830 to communicate with other devices, specifically, may send information or data to other devices, or receive information or data sent by other devices.

[0489] The transceiver 830 may include a transmitter and a receiver. The transceiver 830 may further include an antenna, and the number of the antennas may be one or more.

[0490] In some embodiments, the communication device 800 may specifically be a network device of an embodiment of the present application, and the communication device 800 may implement the corresponding processes implemented by the network device in each method of the embodiment of the present application, which will not be described in detail here for the sake of brevity.

[0491] In some embodiments, the communication device 800 may specifically be a terminal device of an embodiment of the present application, and the communication device 800 may implement the corresponding processes implemented by the terminal device in each method of the embodiment of the present application, which will not be described in detail here for the sake of brevity.

[0492] Fig.13 It is a schematic structural diagram of the device of an embodiment of the present application. Fig.13 The device 900 shown includes a processor 910, which can call and run a computer program from a memory to implement the method in the embodiment of the present application.

[0493] In some embodiments, Fig.13 As shown, the apparatus 900 may further include a memory 920. The processor 910 may call and run a computer program from the memory 920 to implement the method in the embodiment of the present application.

[0494] The memory 920 may be a separate device independent of the processor 910 , or may be integrated into the processor 910 .

[0495] In some embodiments, the apparatus 900 may further include an input interface 930. The processor 910 may control the input interface 930 to communicate with other devices or chips, and specifically, may obtain information or data sent by other devices or chips.

[0496] In some embodiments, the apparatus 900 may further include an output interface 940. The processor 910 may control the output interface 940 to communicate with other devices or chips, and specifically, may output information or data to other devices or chips.

[0497] In some embodiments, the device can be applied to the network equipment in the embodiments of the present application, and the device can implement the corresponding processes implemented by the network equipment in the various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0498] In some embodiments, the apparatus can be applied to the terminal device in the embodiments of the present application, and the apparatus can implement the corresponding processes implemented by the terminal device in the various methods in the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0499] In some embodiments, the device mentioned in the embodiments of the present application may also be a chip, for example, a system-on-chip, a system-on-chip, a chip system, or a system-on-chip chip.

[0500] Fig.14 1 is a schematic block diagram of a communication system 1000 provided in an embodiment of the present application. Fig.14 As shown, the communication system 1000 includes a terminal device 1010 and a network device 1020 .

[0501] Among them, the terminal device 1010 can be used to implement the corresponding functions implemented by the terminal device in the above method, and the network device 1020 can be used to implement the corresponding functions implemented by the network device in the above method. For the sake of brevity, they are not repeated here.

[0502] It should be understood that the processor of the embodiment of the present application may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method embodiment can be completed by the hardware integrated logic circuit or software instructions in the processor. The above processor can be a general processor, a digital signal processor (Digital Signal Processor, DSP), an application-specific integrated circuit (Application Specific Integrated Circuit, ASIC), a field programmable gate array (Field Programmable Gate Array, FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components. The methods, steps and logic block diagrams disclosed in the embodiments of the present application can be implemented or executed. The general processor can be a microprocessor or the processor can also be any conventional processor. The steps of the method disclosed in the embodiment of the present application can be directly embodied as a hardware decoding processor to perform, or the hardware and software modules in the decoding processor are combined and performed. The software module can be located in a random access memory, a flash memory, a read-only memory, a programmable read-only memory or an electrically erasable programmable memory, a register, and other mature storage media in the art. The storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.

[0503] It can be understood that the memory in the embodiments of the present application can be a volatile memory or a non-volatile memory, or can include both volatile and non-volatile memories. Among them, the non-volatile memory can be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory can be a 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 dynamic random access memory (SLDRAM), and direct RAM bus random access memory (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0504] It should be understood that the above-mentioned memory is exemplary but not restrictive. For example, the memory in the embodiments of the present application may also be static random access memory (static RAM, SRAM), dynamic random access memory (dynamic RAM, DRAM), synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous link dynamic random access memory (synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM), etc. That is to say, the memory in the embodiments of the present application is intended to include but not limited to these and any other suitable types of memory.

[0505] An embodiment of the present application also provides a computer-readable storage medium for storing a computer program.

[0506] Optionally, in some embodiments, 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.

[0507] In some embodiments, the computer-readable storage medium can be applied to the terminal device in the embodiments of the present application, and the computer program enables the computer to execute 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 will not be repeated here.

[0508] An embodiment of the present application also provides a computer program product, including computer program instructions.

[0509] Optionally, in some embodiments, the computer program product can be applied to the network device in the embodiments of the present application, and the computer program instructions enable 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.

[0510] In some embodiments, the computer program product can be applied to the terminal device in the embodiments of the present application, and the computer program instructions enable the computer to execute 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 will not be repeated here.

[0511] The embodiment of the present application also provides a computer program.

[0512] Optionally, in some embodiments, 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 of the embodiments of the present application. For the sake of brevity, they are not repeated here.

[0513] In some embodiments, 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 will not be repeated here.

[0514] Those of ordinary skill 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 this application.

[0515] 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.

[0516] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0517] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0518] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0519] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. In view of such an understanding, the technical solution of the present application, 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, which is stored in a storage medium and includes several instructions for 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 methods described in each 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 (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0520] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A channel access method, characterized in that: include: The terminal device determines a first channel access mode corresponding to a first physical channel or a physical signal; wherein, The first physical channel or physical signal includes an uplink physical channel or physical signal on a first carrier, and / or the first physical channel or physical signal includes a sidelink physical channel or physical signal on the first carrier, and the first carrier is located in an unlicensed spectrum within a first frequency range; The first channel access method includes one of the following: Channel access without channel detection, first type of channel access, second type of channel access; Wherein, the first type of channel access includes a first type of channel access corresponding to directional channel detection; The second type of channel access includes a second type of channel access corresponding to directional channel detection.

2. The method according to claim 1, characterized in that The first type of channel access is a channel access method of detecting a random backoff of multiple monitoring time slots; The second type of channel access is a channel access method for detecting a fixed monitoring time slot length.

3. The method according to claim 1 or 2, characterized in that The terminal device determines a first channel access mode corresponding to a first physical channel or a physical signal, including: The terminal device determines, based on first indication information, that the first physical channel or physical signal corresponds to the first channel access method, wherein the first indication information is used to indicate the channel access method.

4. The method according to claim 3, characterized in that The channel detection beam direction is determined based on high-level parameters configured by the network device or is indicated by the first indication information or is preset.

5. A channel access method, characterized in that: include: The network device determines a first channel access mode corresponding to the first physical channel or physical signal; The first physical channel or physical signal comprises a downlink physical channel or physical signal on a first carrier, and the first carrier is located in an unlicensed spectrum within a first frequency range; The first channel access method includes one of the following: Channel access without channel detection, first type of channel access, second type of channel access; Wherein, the first type of channel access includes a first type of channel access corresponding to directional channel detection; The second type of channel access includes a second type of channel access corresponding to directional channel detection.

6. The method according to claim 5, characterized in that The first type of channel access is a channel access method of detecting a random backoff of multiple monitoring time slots; The second type of channel access is a channel access method for detecting a fixed monitoring time slot length.

7. A channel access method, characterized in that: include: The first device determines to send a first physical channel or physical signal on a first carrier, the first physical channel or physical signal corresponds to a first channel access mode, and the first carrier is located in an unlicensed spectrum within a first frequency range; The first device performs channel access on the first carrier according to the first channel access method; After the channel access is successful, sending the first physical channel or physical signal through the first carrier; The channel access process corresponding to the first channel access mode is as follows: Channel detection is a channel access process with a fixed monitoring time slot length; or, Channel access process without channel detection.

8. The method according to claim 7, characterized in that If the length of the first gap is less than or equal to the first preset value, the channel access process corresponding to the first channel access mode is a channel access process without performing channel detection; The first gap is a gap between a starting position of the first physical channel or physical signal and an ending position of a first transmission opportunity, and the first transmission opportunity is a previous transmission opportunity corresponding to the first physical channel or physical signal.

9. The method according to claim 7, characterized in that The channel access process corresponding to the first channel access mode is a channel access process in which the channel detection is a fixed monitoring time slot length, and the fixed monitoring time slot length is a first preset value; If the length of the first gap is greater than or equal to the first preset value, the channel access process corresponding to the first channel access method is a channel access process in which the channel is detected as a fixed monitoring time slot length, and the fixed monitoring time slot length is the first preset value.

10. The method according to claim 8 or 9, characterized in that The first preset value includes 8 μs.

11. A terminal device, characterized in that: include: A processing unit, configured to determine a first channel access mode corresponding to a first physical channel or a physical signal; wherein: The first physical channel or physical signal includes an uplink physical channel or physical signal on a first carrier, and / or the first physical channel or physical signal includes a sidelink physical channel or physical signal on the first carrier, and the first carrier is located in an unlicensed spectrum within a first frequency range; The first channel access method includes one of the following: Channel access without channel detection, first type of channel access, second type of channel access.

12. A network device, characterized in that: include: A processing unit, configured to implement a first channel access mode corresponding to a first physical channel or a physical signal; The first physical channel or physical signal comprises a downlink physical channel or physical signal on a first carrier, and the first carrier is located in an unlicensed spectrum within a first frequency range; The first channel access method includes one of the following: Channel access without channel detection, first type of channel access, second type of channel access.

13. A channel access device, characterized in that: include: Processing unit and communication unit, The processing unit is configured to determine to send a first physical channel or a physical signal on a first carrier, the first physical channel or the physical signal corresponds to a first channel access mode, and the first carrier is located in an unlicensed spectrum within a first frequency range; The processing unit is further used to perform channel access on the first carrier according to the first channel access method; and the communication unit is used to send the first physical channel or physical signal through the first carrier after the channel access is successful.

14. 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 4.

15. 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 as claimed in claim 5 or 6.

16. A channel access 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 as claimed in any one of claims 7 to 10.

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