Wireless communication method, device, and storage medium

Abstract

The present application provides a wireless communication method, a device, and a storage medium. The method comprises: on the basis of first information and / or second information, a first station (STA) controls a non-primary channel access (NPCA) operation of the first STA. The first information is NPCA operation parameter information configured by a first basic service set (BSS), and the first BSS is a BSS in which the first STA is located. The second information is transmission restriction information of an adjacent channel and / or a candidate adjacent channel indicated by a second STA of a second BSS, and the second BSS is an overlapping basic service set (OBSS) of the first BSS.

Description

A wireless communication method and device, storage medium TECHNICAL FIELD

[0001] Embodiments of the present application relate to the field of mobile communication technology, and in particular to a wireless communication method and device, storage medium. BACKGROUND

[0002] Wireless local area network industry is one of the fastest growing industries in the entire data communication field. Wireless local area network solution, as a supplement and expansion of traditional wired local area network, has been favored by home network users, small and medium-sized office users, general enterprise users and telecom operators due to its flexibility, mobility, scalability and lower investment cost, and has been rapidly applied.

[0003] Non-primary channel access (NPCA) operating mode enables a station (STA) to access a secondary channel when a primary channel is busy due to overlapping basic service set (OBSS) traffic or other conditions.

[0004] SUMMARY

[0005] Embodiments of the present application provide a wireless communication method and device, storage medium.

[0006] The wireless communication method provided by the embodiments of the present application comprises:

[0007] The first station STA controls the non-primary channel access (NPCA) operation of the first STA based on the first information and / or the second information.

[0008] The first information is the NPCA operating parameter information configured by a first basic service set (BSS), and the first BSS is a BSS in which the first STA is located.

[0009] The second information is transmission restriction information of a neighboring channel and / or an alternative neighboring channel indicated by a second STA of a second BSS.

[0010] The second BSS is an overlapping basic service set (OBSS) of the first BSS.

[0011] The first station STA provided by the embodiments of the present application comprises:

[0012] The control unit is configured to control the non-primary channel access (NPCA) operation of the first STA based on the first information and / or the second information.

[0013] The first information is NPCA operation parameter information of a first basic service set (BSS) configuration, and the first BSS is a BSS in which the first STA is located.

[0014] The second information is transmission restriction information of a neighboring channel and / or an alternative neighboring channel indicated by a second STA of a second BSS.

[0015] The second BSS is an overlapping basic service set (OBSS) of the first BSS.

[0016] The communication device provided by the embodiment of the present application comprises a processor and a memory. The memory is configured to store a computer program, and the processor is configured to invoke and run the computer program stored in the memory, so that the communication device executes the wireless communication method described above.

[0017] The chip provided by the embodiment of the present application is configured to implement the wireless communication method described above.

[0018] Specifically, the chip comprises a processor configured to invoke and run a computer program from a memory, so that a device installed with the chip executes the wireless communication method described above.

[0019] The computer readable storage medium provided by the embodiment of the present application is configured to store a computer program, and the running of the computer program causes a computer to execute the wireless communication method described above.

[0020] The computer program product provided by the embodiment of the present application comprises computer program instructions, and the running of the computer program instructions causes a computer to execute the wireless communication method described above.

[0021] The computer program provided by the embodiment of the present application, when running on a computer, causes the computer to execute the wireless communication method described above.

[0022] Through the technical solution described above, the first STA controls the NPCA operation of the first STA according to the NPCA operation information of the first BSS configuration and / or the transmission restriction information of the neighboring channel and / or the alternative neighboring channel indicated by the second STA of the second BSS which is the OBSS of the first BSS, so as to control the channel on which the first STA performs the NPCA operation, and avoid or alleviate the problem of adjacent channel transmission interference. BRIEF DESCRIPTION OF DRAWINGS

[0023] The accompanying drawings, which are included to provide a further understanding of the present application, constitute a part of the present application and illustrate the illustrative embodiments of the present application and their description serve to explain the present application, and do not constitute improper limitations on the present application. In the drawings:

[0024] FIG. 1 is an optional schematic diagram of an application scenario of the embodiment of the present application;

[0025] FIG. 2A is an optional schematic diagram of an application scenario of the embodiments of the present application;

[0026] FIG. 2B is an optional schematic diagram of an application scenario of the embodiments of the present application;

[0027] FIG. 3 is an optional schematic diagram of a wireless communication method according to the embodiments of the present application;

[0028] FIG. 4 is an optional flow diagram of a wireless communication method according to the embodiments of the present application;

[0029] FIG. 5 is an optional schematic diagram of a neighboring channel and an alternative neighboring channel according to the embodiments of the present application;

[0030] FIG. 6 is an optional schematic diagram of a neighboring channel and an alternative neighboring channel according to the embodiments of the present application;

[0031] FIG. 7 is an optional format diagram of an NPCA parameter set element according to the embodiments of the present application;

[0032] FIG. 8 is an optional format diagram of an NPCA control field according to the embodiments of the present application;

[0033] FIG. 9 is an optional channel diagram of a wireless communication method according to the embodiments of the present application;

[0034] FIG. 10 is an optional channel diagram of a wireless communication method according to the embodiments of the present application;

[0035] FIG. 11 is an optional channel diagram of a wireless communication method according to the embodiments of the present application;

[0036] FIG. 12 is an optional structure diagram of a first STA according to the embodiments of the present application;

[0037] FIG. 13 is an optional structure diagram of a communication device according to the embodiments of the present application;

[0038] FIG. 14 is an optional structure diagram of a chip according to the embodiments of the present application;

[0039] FIG. 15 is an optional block diagram of a communication system according to the embodiments of the present application. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings.

[0041] FIG. 1 is an example of a communication system architecture to which the embodiments of the present application are applied.

[0042] As shown in FIG. 1, the communication system 100 can include an AP 110 and STAs 120 accessing the network through the AP 110. In some scenarios, the AP 110 can also be referred to as an AP STA, i.e., the AP 110 is also a STA in some sense. In some scenarios, the STAs 120 can also be referred to as non-AP STAs. In some scenarios, the STAs 120 can include both AP STAs and non-AP STAs. The communication in the communication system 100 can include communication between the AP 110 and the STAs 120, or communication between the STAs 120, or communication between a STA 120 and a peer STA, where the peer STA can refer to a peer device communicating with the STA 120, e.g., the peer STA can be an AP or a non-AP STA.

[0043] The AP 110 can be used as a bridge between a wired network and a wireless network, and mainly functions to connect various wireless network clients together and then access the wireless network to the Ethernet. The AP 110 can be a terminal device (e.g., a mobile phone) or a network device (e.g., a router) with a WiFi chip.

[0044] It should be noted that the role of the STA 120 in the communication system is not absolute, i.e., the role of the STA 120 in the communication system can be switched between the AP and the STA. For example, in some scenarios, when a mobile phone is connected to a router, the mobile phone is a STA, and when the mobile phone is used as a hotspot for other mobile phones, the mobile phone acts as an AP.

[0045] In some embodiments, the AP 110 and the STA 120 can be devices applied in the Internet of Vehicles, Internet of Things (IoT) nodes, sensors, etc., smart cameras, smart remote controllers, smart water meters, etc. in smart homes, and sensors, etc. in smart cities.

[0046] In some embodiments, the AP 110 can be a device supporting the 802.11be standard. The AP can also be a device supporting multiple current and future WLAN standards of the 802.11 family, such as 802.11ax, 802.11ac, 802.11n, 802.11g, 802.11b, and 802.11a. In some embodiments, the STA 120 can support the 802.11be standard. The STA can also support multiple current and future WLAN standards of the 802.11 family, such as 802.11ax, 802.11ac, 802.11n, 802.11g, 802.11b, and 802.11a.

[0047] In some embodiments, the AP 110 and / or the STA 120 can be deployed on land, including indoors or outdoors, handheld, wearable, or vehicle-mounted; can also be deployed on water (e.g., a ship); and can also be deployed in the air (e.g., an airplane, a balloon, and a satellite, etc.).

[0048] In some embodiments, the STA 120 can be a mobile phone, a pad, a computer with wireless transceiver function, a virtual reality (VR) device, an augmented reality (AR) device, a wireless device in industrial control, a set-top box, a wireless device in self-driving, a vehicle-mounted communication device, a wireless device in remote medical treatment, a wireless device in smart grid, a wireless device in transportation safety, a wireless device in smart city, a wireless device in smart home, a wireless communication chip / ASIC / SoC, etc., which supports WLAN / WiFi technology.

[0049] Exemplarily, the STA 120 can also be a wearable device. The wearable device can also be referred to as a wearable smart device, which is a general term for devices that are designed and developed by applying wearable technology to daily wear, such as glasses, gloves, watches, clothes, and shoes, etc. The wearable device is a portable device that is directly worn on the body or integrated into the clothes or accessories of the user. The wearable device is not only a hardware device, but also has strong functions through software support and data interaction and cloud interaction. The general wearable smart device includes devices with full functions and large sizes, which can realize complete or partial functions without relying on a smart phone, such as smart watches or smart glasses, etc., and devices that focus on a certain application function and need to cooperate with other devices such as a smart phone, such as various smart wristbands and smart jewelry for monitoring physical signs, etc.

[0050] It should be understood that FIG. 1 is only an example of the present application and should not be construed as a limitation of the present application. For example, FIG. 1 only exemplarily shows one AP and two STAs, in some embodiments, the communication system 100 can include multiple APs and include other numbers of STAs, and the embodiments of the present application do not limit this.

[0051] It should be noted that FIG. 1, FIG. 2A, FIG. 2B only schematically show the system to which the embodiments of the present application are applied, and of course, the method shown in the embodiments of the present application can also be applied to other systems. In addition, the terms "system" and "network" are often used interchangeably in this paper. The term "and / or" in this paper is only to describe the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B can represent the following three cases: A exists alone, A and B exist together, and B exists alone. In addition, the character " / " in this paper generally represents an "or" relationship between the front and rear associated objects. It should also be understood that the "indication" mentioned in the embodiments of the present application can be direct indication or indirect indication, and can also mean an associated relationship. For example, A indicates B, which can mean that B can be obtained through A; or it can mean that A indirectly indicates B, for example, A indicates C, and B can be obtained through C; or it can mean that A and B have an associated relationship. It should also be understood that the "corresponding" mentioned in the embodiments of the present application can mean a direct correspondence or an indirect correspondence between the two, or it can mean an associated relationship between the two, or it can mean an indication and being indicated, a configuration and being configured, and the like. It should also be understood that the "predefined" or "predefined rule" mentioned in the embodiments of the present application can be realized by pre-saving the corresponding code, table or other means that can be used to indicate related information in the device (for example, including terminal equipment and network equipment), and the specific implementation manner of the present application is not limited. For example, the predefinition can mean the definition in the protocol. It should also be understood that the "protocol" in the embodiments of the present application can mean a standard protocol in the communication field, which can include the LTE protocol, the NR protocol and the related protocol applied to the future communication system, and the present application is not limited thereto.

[0052] In order to facilitate the understanding of the technical solutions of the embodiments of the present application, the related technologies of the embodiments of the present application are described below, and the following related technologies can be combined with the technical solutions of the embodiments of the present application in any way, which all belong to the protection scope of the embodiments of the present application.

[0053] NPCA operation

[0054] The NPCA operation mode enables a STA to access a secondary channel when the primary channel is busy due to OBSS traffic or other conditions, in particular, this operation mode does not assume that a STA is capable of simultaneously detecting or decoding frames and obtaining Network Allocation Vector (NAV) information on the primary and secondary channels, and only one BSS can have one NPCA primary channel, when the primary channel of a BSS is known to be busy due to OBSS traffic or other conditions, a STA can contend for the channel on the NPCA primary channel.

[0055] As shown in FIG. 3, the operating bandwidth of a station is 80 megahertz (MHz), and when the station detects OBSS interference, i.e., an interference PPDU (inter-PPDU) of 20 MHz (or 40 MHz), it can contend for the channel on the other 60 MHz (or 40 MHz) secondary channel, and transmit after contending for a transmission opportunity (TXOP).

[0056] Adjacent channel interference and suppression

[0057] For the adjacent channel rejection bandwidth of W MHz (W is 20, 40, 80, 160, or 320), the strength of the desired signal is set 3 db above the rate-dependent sensitivity specified in the receiver minimum input level sensitivity requirement, and the power of the interfering signal in a W MHz bandwidth is increased to 10% PER for a physical layer service data unit (PSDU) length of 2048 octets for binary phase shift keying (BPSK) modulation using dual carrier modulation (DCM), and for a PSDU length of 4096 octets for all other modulations. The power difference between the signal in the interfering channel and the desired channel is the corresponding adjacent channel rejection.

[0058] For a W MHz channel (W is 20, 40, 80, or 160), the strength of the desired signal is set 3 db above the rate-dependent sensitivity specified in the receiver minimum input level sensitivity requirement, and the power of the interfering signal in a W MHz bandwidth is increased until the PER is 10% for a PSDU length of 4096 octets, to measure the non-adjacent channel rejection level. The power difference between the signal in the interfering channel and the desired channel is the corresponding non-adjacent channel rejection. The non-adjacent channel rejection shall be met for any non-adjacent channel located at least 2xW MHz from the center frequency of the desired signal.

[0059] Spatial reuse operation

[0060] The goal of spatial reuse operation is to allow more frequent reuse of the medium between OBSSs in dense deployment scenarios through early identification of OBSS signals and interference management. Two independent spatial reuse modes are defined: OBSS packet detect (PD) based spatial reuse and parameterized spatial reuse (PSR) based spatial reuse.

[0061] OBSS PD based spatial reuse includes two types: one is based on non-SRG OBSS PD threshold, allowing a STA to ignore inter-BSS PPDUs under certain conditions using non-SRG OBSS PD threshold (level); one is based on SRG OBSS PD level, allowing a STA to ignore inter-BSS PPDUs identified as SRG PPDUs under certain conditions using SRG OBSS PD threshold (level).

[0062] For PSR based spatial reuse, a PSR opportunity is identified from the value of a high efficiency (HE) trigger-based (TB) PPDU's receive vector (RXVECTOR) parameter spatial reuse (SPATIAL_REUSE) and / or the contents of a trigger frame. When certain conditions are met that are intended to avoid interfering with a receiver's reception of an ongoing PPDU, an HE STA can initiate a spatial reuse (SR) transmission in the PSR opportunity during the ongoing PPDU.

[0063] In the related art, the NPCA mechanism allows a station to switch to a non-primary channel (or secondary channel) to contend for a TXOP to transmit a PPDU when its primary channel is busy due to OBSS traffic or other conditions. When the station communicates on the secondary channel as the NPCA operating channel and the communication with the OBSS station occurs simultaneously on the operating channel of the OBSS station, if the secondary channel of the station as the NPCA operating channel is too close to the operating channel of the OBSS station, for example, the secondary channel of the station for NPCA communication is located in the range of the adjacent channel or the alternative adjacent channel of the operating channel of the OBSS station, it can cause serious adjacent channel interference, thereby affecting the signal reception of the receiving end of the BSS of the station and / or the receiving end of the OBSS, and affecting the system throughput and communication efficiency.

[0064] To facilitate understanding of the technical solutions of the embodiments of the present application, the technical solutions of the present application are described in detail below through specific embodiments. The above related art can be combined with the technical solutions of the embodiments of the present application as an optional solution, which all belong to the protection scope of the embodiments of the present application. The embodiments of the present application include at least part of the following contents.

[0065] The wireless communication method provided by the embodiments of the present application, as shown in FIG. 4, includes:

[0066] S401, the first station STA controls a non-primary channel access (NPCA) operation of the first STA based on first information and / or second information;

[0067] The first information is NPCA operation parameter information of a first basic service set (BSS) configuration, and the first BSS is a BSS in which the first STA is located.

[0068] The second information is transmission restriction information of a neighboring channel and / or an alternative neighboring channel indicated by a second STA of a second BSS.

[0069] The second BSS is an OBSS of the first BSS.

[0070] The first STA is any STA in the first BSS, the second STA is any STA in the second BSS, and the first BSS and the second BSS are OBSSs of each other. The primary channels, i.e., the operating channels, of the first BSS and the second BSS are the same, and the first BSS supports the NPCA operation.

[0071] In the embodiments of the present application, the STA can include an AP and / or a non-AP STA.

[0072] In an example, the first STA controls the NPCA operation of the first STA based on the first information.

[0073] In an example, the first STA controls the NPCA operation of the first STA based on the second information.

[0074] In an example, the first STA controls the NPCA operation of the first STA based on the first information and the second information.

[0075] In some embodiments, controlling the NPCA operation of the first STA can be understood as determining whether to initiate the NPCA operation, and / or determining parameters related to the NPCA operation of the first STA. For example, the parameters related to the NPCA operation include one or more of the following: an NPCA operation channel used for transmission, a bandwidth of the NPCA operation channel, a transmission power, a TXOP or a frame exchange sequence duration of the NPCA operation.

[0076] In some embodiments, the first information can be understood as NPCA operation parameter information of the first BSS configuration, i.e., information indicating NPCA operation parameters, wherein the operation parameters can be used to determine one or more of the following: a channel for performing NPCA-based transmission, a bandwidth of the NPCA operation channel, a transmission power of the NPCA-based PPDU, a transmission opportunity or a frame exchange duration of the NPCA operation, etc.

[0077] For example, the first information can comprise adjacent channel transmission requirement and policy information and / or alternative adjacent channel transmission requirement and policy information, i.e., first channel control information. The adjacent channel transmission requirement and policy information can indicate whether adjacent channel transmission is restricted in the NPCA operation and which channels in the adjacent channels are restricted, etc., and the alternative adjacent channel transmission requirement and policy information can indicate whether alternative adjacent channel transmission is restricted in the NPCA operation and which channels in the alternative adjacent channels are restricted, etc. The first channel control information is used to indicate whether to initiate the NPCA operation and part of the operation parameters in the case of initiating the NPCA operation.

[0078] For example, the first information can comprise NPCA control information used to control NPCA initiation and NPCA operation channels, etc.

[0079] In some embodiments, the second information can be understood as adjacent channel transmission restriction (ACTR) information and / or alternative adjacent channel transmission restriction (AACTR) information indicated by the second STA in the second BSS, which represents transmission restriction of the adjacent channel and / or alternative adjacent channel indicated by the second STA in the second BSS, i.e., whether to restrict adjacent channel transmission and / or alternative adjacent channel transmission during OBSS PPDU transmission and / or during a TXOP in which the OBSS PPDU is located. The OBSS PPDU can be understood as a data PPDU transmitted by the second BSS as an OBSS of the first BSS, wherein the data PPDU is transmitted on the primary channel of the second BSS.

[0080] In the embodiments of the present application, the adjacent channel and the alternative adjacent channel are relative to the OBSS PPDU transmission bandwidth, i.e., the adjacent channel and / or the alternative adjacent channel based on the OBSS PPDU transmission bandwidth.

[0081] In some embodiments, the adjacent channel and / or the alternative adjacent channel based on the OBSS PPDU transmission bandwidth can also be alternatively described as the adjacent channel and / or the alternative adjacent channel based on the OBSS PPDU transmission channel and bandwidth.

[0082] In the embodiments of the present application, the adjacent channel based on the OBSS PPDU transmission bandwidth can be understood as the adjacent channel bandwidth based on the OBSS PPDU transmission channel and bandwidth, i.e., the transmission bandwidth adjacent to the OBSS PPDU transmission channel and having the same bandwidth as the OBSS PPDU transmission bandwidth.

[0083] In an embodiment of the present application, the alternative adjacent bandwidth based on the OBSS PPDU transmission bandwidth can be understood as the alternative adjacent channel bandwidth based on the OBSS PPDU transmission channel and bandwidth, that is, the transmission bandwidth adjacent to the adjacent channel bandwidth based on the OBSS PPDU transmission bandwidth and having the same bandwidth as the OBSS PPDU transmission bandwidth.

[0084] In an embodiment of the present application, the adjacent channel or the alternative adjacent channel can include one or more subchannels. In this embodiment, the bandwidth of the subchannel is 20 MHz or 40 MHz. In an example, if the bandwidth of the adjacent channel or the alternative adjacent channel is 20 MHz, 40 MHz or 80 MHz, the bandwidth of the subchannel is 20 MHz, and if the bandwidth of the adjacent channel or the alternative adjacent channel is 160 MHz or 80+80 MHz, the bandwidth of the subchannel is 40 MHz.

[0085] In an example, as shown in FIG. 5, the transmission of the OBSS PPDU is performed on the channel 501, wherein the transmission bandwidth of the OBSS PPDU is 20 MHz, the adjacent channel is the 20M bandwidth adjacent to the transmission channel of the OBSS PPDU, and thus the adjacent channel includes the subchannel 502, and the alternative adjacent channel is the 20M bandwidth adjacent to the adjacent channel, and thus the alternative adjacent channel includes the subchannel 503. In FIG. 5, the bandwidth of the subchannel 501, the subchannel 502 and the subchannel 503 is 20 MHz.

[0086] In an example, as shown in FIG. 6, the transmission of the OBSS PPDU is performed on the subchannel 601 and the subchannel 602, wherein the transmission bandwidth of the OBSS PPDU is 40 MHz, the adjacent channel is the 40M bandwidth adjacent to the transmission channel of the OBSS PPDU, and thus the adjacent channel includes the subchannel 603 and the subchannel 604, and the alternative adjacent channel is the 40M bandwidth adjacent to the adjacent channel, and thus the alternative adjacent channel includes the subchannel 605 and the subchannel 606. In FIG. 6, the bandwidth of the subchannel 601, the subchannel 602, the subchannel 603, the subchannel 604, the subchannel 605 and the subchannel 606 is 20 MHz.

[0087] It should be noted that in FIG. 5 and FIG. 6, only the adjacent channel and the alternative adjacent channel on one side of the OBSS PPDU are shown, and in practice, the adjacent channel and the alternative adjacent channel exist on both sides of the OBSS PPDU.

[0088] In the embodiments of the present application, the first STA controls the NPCA operation of the first STA according to the NPCA operation information configured by the first BSS and / or the transmission restriction information of the adjacent channel and / or the alternative adjacent channel indicated by the second STA of the second BSS which is the OBSS of the first BSS, so as to control the channel on which the first STA performs the NPCA operation, thereby avoiding or mitigating the adjacent channel transmission interference problem that may be caused.

[0089] In some embodiments, the first STA controls the NPCA operation of the first STA based on the first information and / or the second information, including:

[0090] When the first STA listens to the OBSS PPDU, the first STA controls the NPCA operation of the first STA based on the first information and / or the second information.

[0091] In the embodiments of the present application, the listening can also be replaced by the detecting.

[0092] When the first STA listens to the OBSS PPDU and the NPCA triggering condition is met, the first STA switches from the primary channel of the first BSS to the NPCA operation channel, and controls the NPCA operation of the first STA based on the first information and / or the second information.

[0093] The OBSS PPDU is a PPDU transmitted on the primary channel of the second BSS, which can be sent by a second Non-AP STA in the second BSS to an AP in the second BSS, or sent by the second AP to the second Non-AP STA.

[0094] The OBSS PPDU can also be referred to as an interference PPDU (inter PPDU).

[0095] In some embodiments, the OBSS PPDU can include a HE / EHT / UHR PPDU.

[0096] In the embodiments of the present application, when the first STA listens to the PPDU transmitted by the second BSS which is the OBSS, i.e., the OBSS PPDU, it is determined that the primary channel of the current first BSS is busy and the NPCA operation needs to be triggered, and then the NPCA operation of the first STA is controlled according to the NPCA operation information configured by the first BSS and / or the transmission restriction information of the adjacent channel and / or the alternative adjacent channel indicated by the second STA of the second BSS which is the OBSS of the first BSS, so as to control the channel on which the first STA performs the NPCA operation, thereby avoiding or mitigating the interference problem between the transmission of the OBSS PPDU and the transmission of the PPDU on the NPCA operation channel, i.e., the adjacent channel transmission interference problem.

[0097] In some embodiments, the first information comprises first channel control information, the first channel control information being used to indicate that, in the NPCA operation of the first BSS, transmission is required on all or part of the sub-channels in the adjacent channel and / or alternative adjacent channel based on the OBSS PPDU transmission bandwidth;

[0098] controlling the NPCA operation of the first STA based on the first information comprises:

[0099] In the case that the NPCA operation channel of the first BSS comprises all or part of the sub-channels in the adjacent channel and / or alternative adjacent channel based on the OBSS PPDU transmission bandwidth, based on the first channel control information, it is determined whether the first STA initiates transmission or performs transmission on all or part of the sub-channels in the adjacent channel and / or alternative adjacent channel based on the OBSS PPDU transmission bandwidth.

[0100] The NPCA operation channel of the first BSS can be understood as a channel used for the NPCA operation of the first BSS, wherein the NPCA operation channel comprises a NPCA primary channel and a NPCA secondary channel. When the NPCA initiates the NPCA operation, the channel can be contended on the NPCA primary channel.

[0101] The NPCA operation channel comprises all or part of the sub-channels in the adjacent channel and / or alternative adjacent channel based on the OBSS PPDU transmission bandwidth, and it can be considered that there is a possibility of performing the NPCA operation on all or part of the sub-channels in the adjacent channel and / or alternative adjacent channel based on the OBSS PPDU transmission bandwidth, that is, there can be transmission of a PPDU on all or part of the sub-channels in the adjacent channel and / or alternative adjacent channel based on the OBSS PPDU transmission bandwidth, and there can be mutual interference between the transmission of the PPDU and the transmission of the OBSS PPDU.

[0102] In the embodiments of the present application, determining whether the first STA initiates transmission or performs transmission on all or part of the sub-channels in the adjacent channel and / or alternative adjacent channel based on the OBSS PPDU transmission bandwidth can be understood as limiting the initiation or performance of transmission through all or part of the sub-channels in the adjacent channel and / or alternative adjacent channel based on the OBSS PPDU transmission bandwidth.

[0103] In the embodiments of the present application, if the first STA is a transmission opportunity holder (TXOP holder), it is determined whether to initiate transmission on all or part of the sub-channels in the adjacent channel and / or alternative adjacent channel based on the OBSS PPDU transmission bandwidth, and in the case of determining to initiate transmission, a PPDU is sent on all or part of the sub-channels in the adjacent channel and / or alternative adjacent channel based on the OBSS PPDU transmission bandwidth. If the first STA is not a transmission opportunity holder (TXOP holder), it is determined whether to transmit on all or part of the sub-channels in the adjacent channel and / or alternative adjacent channel based on the OBSS PPDU transmission bandwidth.

[0104] It can be understood that the TXOP holder sends a PPDU on all or part of the sub-channels in the adjacent channel and / or alternative adjacent channel based on the OBSS PPDU transmission bandwidth as a sending end, and another end that is not a TXOP holder receives the PPDU sent by the TXOP holder on all or part of the sub-channels in the adjacent channel and / or alternative adjacent channel based on the OBSS PPDU transmission bandwidth, that is, the transmission of the PPDU is carried out.

[0105] Based on the first channel control information, it is determined whether to initiate transmission or carry out transmission on all or part of the sub-channels in the adjacent channel and / or alternative adjacent channel based on the OBSS PPDU transmission bandwidth, which can be understood as: based on the adjacent channel transmission requirement and policy information and / or alternative adjacent channel transmission requirement and policy information configured by the first BSS, it is determined on which sub-channels in the adjacent channel and / or alternative adjacent channel based on the OBSS PPDU transmission bandwidth to initiate transmission or carry out transmission, or for each sub-channel in the adjacent channel and / or alternative adjacent channel based on the OBSS PPDU transmission bandwidth, it is determined whether to initiate transmission or carry out transmission on the sub-channel.

[0106] In the embodiments of the present application, in the case that the NPCA operating channel includes all or part of the sub-channels in the adjacent channel and / or alternative adjacent channel based on the OBSS PPDU transmission bandwidth, the first STA determines whether to initiate transmission or carry out transmission on all or part of the sub-channels in the adjacent channel and / or alternative adjacent channel based on the OBSS PPDU transmission bandwidth based on the first channel control information, thereby limiting the transmission on all or part of the sub-channels in the adjacent channel and / or alternative adjacent channel based on the OBSS PPDU transmission bandwidth, and thereby reducing the mutual interference between the transmission of the PPDU based on the NPCA and the transmission of the OBSS PPDU.

[0107] In some embodiments, for a sub-channel in the NPCA operating channel that does not belong to the adjacent channel and / or the alternative adjacent channel based on the OBSS PPDU transmission bandwidth, if the transmission on the sub-channel is not restricted, the first STA initiates transmission or performs transmission on the sub-channel.

[0108] In some embodiments, the first channel control information comprises:

[0109] a first bitmap, the first bitmap being used to indicate whether the transmission of a sub-channel at a corresponding position in the adjacent channel and / or the alternative adjacent channel based on the OBSS PPDU transmission bandwidth is allowed. Correspondingly, the first STA determines whether to initiate transmission or perform transmission on all or part of the sub-channels in the adjacent channel and / or the alternative adjacent channel based on the OBSS PPDU transmission bandwidth based on the first bitmap.

[0110] In the embodiments of the present application, the first bitmap is used to indicate whether each sub-channel in the adjacent channel and / or the alternative adjacent channel based on the OBSS PPDU transmission bandwidth is allowed to transmit. The sub-channels in the adjacent channel and / or the alternative adjacent channel based on the OBSS PPDU transmission bandwidth correspond to the bits of the first bitmap.

[0111] In some embodiments, one bit in the first bitmap can correspond to one sub-channel, and is used to indicate whether the corresponding sub-channel is allowed to transmit.

[0112] In some embodiments, in the case where the first bitmap indicates whether each sub-channel in the adjacent channel and the alternative adjacent channel based on the OBSS PPDU transmission bandwidth is allowed to transmit, the first bitmap can be one bitmap or two bitmaps. In the case where the first bitmap is one bitmap, the bitmap is used to indicate whether each sub-channel in the adjacent channel and the alternative adjacent channel based on the OBSS PPDU transmission bandwidth is allowed to transmit. In the case where the first bitmap is two bitmaps, one bitmap is used to indicate whether each sub-channel in the adjacent channel based on the OBSS PPDU transmission bandwidth is allowed to transmit, and one bitmap is used to indicate whether each sub-channel in the alternative adjacent channel based on the OBSS PPDU transmission bandwidth is allowed to transmit.

[0113] In an example, the first bitmap is used to indicate whether each sub-channel in the adjacent channel and the alternative adjacent channel based on the OBSS PPDU transmission bandwidth is allowed to transmit, and the first bitmap is 8 bits, the first 4 bits, i.e., the low 4 bits, correspond to the sub-channels in the adjacent channel, and the last 4 bits, i.e., the high, correspond to the sub-channels in the alternative adjacent channel. Among them, the low bits are used to indicate the sub-channels close to the OBSS PPDU transmission bandwidth, and the high bits are used to indicate the sub-channels far from the OBSS PPDU transmission bandwidth.

[0114] In the embodiments of the present application, the bits in the first bitmap are based on different values to indicate whether the transmission of the corresponding subchannel is allowed or not. In an example, one bit in the first bitmap corresponds to one subchannel, and the value of 0 of the bit indicates that the transmission of the corresponding subchannel is allowed, and the value of 1 of the bit indicates that the transmission of the corresponding subchannel is not allowed.

[0115] In some embodiments, the value of the corresponding bit in the first bitmap is reserved when there is no corresponding subchannel in the adjacent channel or the alternative adjacent channel.

[0116] In some embodiments, the first bitmap can be referred to as an ACT channel bitmap.

[0117] Taking the determination of whether to initiate or perform transmission on all or part of the subchannels in the adjacent channel and / or the alternative adjacent channel based on the OBSS PPDU transmission bandwidth based on the first bitmap as an example, for one subchannel in the adjacent channel or the alternative adjacent channel based on the OBSS PPDU transmission bandwidth, if the bit corresponding to the subchannel in the first bitmap indicates that the transmission of the subchannel is not allowed, the first STA does not initiate or perform transmission on the subchannel; if the bit corresponding to the subchannel in the first bitmap indicates that the transmission of the subchannel is allowed, the first STA initiates or performs transmission on the subchannel.

[0118] For example, based on the adjacent channel and the alternative adjacent channel shown in FIG. 6, the NPCA operating channel includes subchannels 603 to 606, the first bitmap is 8 bits, the first 4 bits indicate whether the subchannels in the adjacent channel are used for transmission, and the last 4 bits indicate whether the subchannels in the alternative adjacent channel are used for transmission, the first 4 bits are 0101, and the last 4 bits are 1010, 1 indicates that the transmission is allowed, and 0 indicates that the transmission is not allowed. In FIG. 6, the adjacent channel includes 2 subchannels, corresponding to the first two bits 01 in the first 4 bits, indicating that the subchannel 603 in the adjacent channel is not used for transmission and the subchannel 604 is used for transmission; the alternative adjacent channel includes 2 subchannels, corresponding to the first two bits 10 in the last 4 bits, indicating that the subchannel 605 in the alternative adjacent channel is used for transmission and the subchannel 606 is not used for transmission, and the first STA initiates or performs transmission of the NPCA-based PPDU on the subchannel 604 and the subchannel 605.

[0119] In some embodiments, the determination of whether the first STA initiates or performs transmission on the adjacent channel and / or the alternative adjacent channel based on the OBSS PPDU transmission bandwidth based on the first channel control information comprises:

[0120] In the case where it is determined that the first STA satisfies the first condition based on the first condition information, it is determined, based on the first channel control information, whether to initiate or perform transmission on all or part of the subchannels in the adjacent channel and / or the alternative adjacent channel based on the OBSS PPDU transmission bandwidth.

[0121] In the case that the first condition is met, the first STA determines whether the first condition is met, and if the first condition is met, the first STA determines, based on the first channel control information, whether the first STA initiates or proceeds with transmission on all or part of the sub-channels in the adjacent channel and / or the alternative adjacent channel based on the OBSS PPDU transmission bandwidth; if the first condition is not met, no determination is made whether to initiate or proceed with transmission on all or part of the sub-channels in the adjacent channel and / or the alternative adjacent channel based on the OBSS PPDU transmission bandwidth.

[0122] In some embodiments, the first condition comprises one or more of the following:

[0123] Condition 1, the first STA detects or receives a received signal strength level value of the OBSS PPDU greater than a first packet detection (PD) threshold value;

[0124] Condition 2, the second BSS and the first BSS are BSSs of a same NPCA group;

[0125] Condition 3, the first STA is not mandatorily indicated to follow the second information;

[0126] Condition 4, a power at which the first STA performs NPCA operation belongs to a first power range.

[0127] The first PD threshold value in Condition 1 can be understood as a PD for adjacent channel and / or alternative adjacent channel transmission restriction, i.e., a maximum PD value for NPCA adjacent channel transmission, which can be predefined, or indicated by the first information, or indicated by the second information.

[0128] Condition 2 can be understood as the second BSS and the first BSS being members of a same NPCA group.

[0129] In some embodiments, if the BSS that transmits the OBSS PPDU and the first BSS are not members of a same NPCA group, no restriction is imposed on transmission in the adjacent channel and / or the alternative adjacent channel based on the OBSS PPDU transmission bandwidth.

[0130] Condition 3 can be understood as the first STA not being mandatorily indicated to follow the second information, and the first STA determines, based on the first channel control information in the first information, whether to initiate or proceed with transmission on all or part of the sub-channels in the adjacent channel and / or the alternative adjacent channel based on the OBSS PPDU transmission bandwidth.

[0131] The first power range in condition 4 can be understood as a range of transmit power of the first STA for transmitting the PPDU based on the NPCA, wherein the first power range can be determined based on the NPCA minimum power and the NPCA maximum power, and if the power of the first STA for transmitting the PPDU based on the NPCA is greater than the NPCA minimum power and greater than the NPCA maximum power, it is determined that the first STA satisfies condition 4.

[0132] In some embodiments, the first information further comprises first condition information for determining whether the first STA satisfies a first condition, and the first condition information comprises one or more of the following:

[0133] a first PD value for indicating the first PD threshold value;

[0134] a second bitmap for indicating, by a color value, a BSS in the plurality of BSSs that is in the same NPCA group as the first BSS;

[0135] a third bitmap for indicating, by a partial BSSID, a BSS in the plurality of BSSs that is in the same NPCA group as the first BSS;

[0136] first power indication information for indicating the first power range.

[0137] first indication information for indicating whether the second information is to be followed compulsorily.

[0138] In some embodiments, the first PD value can be understood as a first PD value configured for the NPCA adjacent channel transmission, and the first PD value plus a set deviation value generates a value of the NPCA adjacent channel transmission maximum PD, i.e., the first PD threshold value.

[0139] For example, the set deviation value is -82 dBm.

[0140] The second bitmap indicates a BSS color value used by a member of the NPCA group to which the sending STA belongs. In an example, each bit of the second bitmap corresponds to one of 64 BSS colors, with the lowest numbered bit corresponding to BSS color value 0 and the highest numbered bit corresponding to BSS color value 63. If a corresponding bit of the second bitmap is 1, then at least one BSS uses the BSS color value, and the BSS is a member of the same NPCA as the sending STA. If a bit of the second bitmap is 0, then no BSS in the same NPCA group as the sending STA uses the corresponding BSS color value. The bit of the second bitmap corresponding to BSS color value 0 is reserved. In embodiments of the present application, the second bitmap can be referred to as an NPCA BSS color bitmap.

[0141] The third bitmap represents Partial BSSID values used by members of the NPCA group to which the first STA belongs. In an example, each bit of the third bitmap corresponds to one of 64 possible BSSID values, with the lowest bit corresponding to Partial BSSID value 0 and the highest bit corresponding to Partial BSSID value 63. If a bit of the third bitmap is 1, then at least one BSSID value is used by a BSS belonging to the same NPCA group member as the transmitting STA. If a bit of the third bitmap is 0, then no BSS in the same NPCA group as the transmitting STA uses the corresponding Partial BSSID value. In embodiments of the present application, the third bitmap can be referred to as an NPCA Partial BSSID bitmap.

[0142] The first power indication information can indicate an NPCA minimum power and an NPCA maximum power. In an example, the first power indication information includes an NPCA PD minimum offset and an NPCA PD maximum offset, wherein the NPCA PD minimum offset plus a set offset value generates the NPCA minimum power, and the NPCA PD maximum offset plus the set offset value generates the NPC maximum power.

[0143] The first indication information is used to indicate whether to follow the second information compulsorily. In embodiments of the present application, the first indication information is used to indicate whether to follow the second information compulsorily based on different values. In an example, when the value of the first indication information is 1, the second information is followed compulsorily; when the value of the first indication information is 0, the second information can be referred to. In embodiments of the present application, the second information can be understood as a transmission restriction requirement indicated by an OBSS PPDU, and the first indication information is used to indicate whether to follow the transmission restriction requirement indicated by the OBSS PPDU compulsorily. In embodiments of the present application, the first indication information can be referred to as OBSS PPDU SIG NPCA compulsory information.

[0144] In some embodiments, the second information is carried in the OBSS PPDU, or the second information is carried in a preamble of the OBSS PPDU, or the second information is carried in a second frame carried by the OBSS PPDU.

[0145] In some embodiments, the second information includes second channel control information, the second channel control information being used to indicate transmission restrictions of all or part of subchannels in adjacent channels and / or alternative adjacent channels based on an OBSS PPDU transmission bandwidth.

[0146] The controlling the NPCA operation of the first STA based on the second information includes:

[0147] In a case that the NPCA operating channel of the first BSS comprises all or part of sub-channels in the adjacent channel and / or the alternative adjacent channel based on the OBSS PPDU transmission bandwidth, based on the second channel control information, it is determined whether the first STA initiates transmission or performs transmission on all or part of sub-channels in the adjacent channel and / or the alternative adjacent channel based on the OBSS PPDU transmission bandwidth.

[0148] The determination of whether to initiate transmission or perform transmission on all or part of sub-channels in the adjacent channel and / or the alternative adjacent channel based on the OBSS PPDU transmission bandwidth based on the second channel control information can be understood as: based on the adjacent channel transmission restriction information and / or the alternative adjacent channel transmission restriction information carried in the OBSS PPDU, it is determined whether to initiate transmission or perform transmission on all or part of sub-channels in the adjacent channel and / or the alternative adjacent channel based on the OBSS PPDU transmission bandwidth.

[0149] In the embodiments of the present application, in a case that the NPCA operating channel comprises all or part of sub-channels in the adjacent channel and / or the alternative adjacent channel based on the OBSS PPDU transmission bandwidth, the first STA determines whether to initiate transmission or perform transmission on all or part of sub-channels in the adjacent channel and / or the alternative adjacent channel based on the OBSS PPDU transmission bandwidth based on the second channel control information, thereby limiting the transmission on all or part of sub-channels in the adjacent channel and / or the alternative adjacent channel based on the OBSS PPDU transmission bandwidth, and thereby reducing mutual interference between the transmission of the NPCA-based PPDU and the transmission of the OBSS PPDU.

[0150] In some embodiments, the second channel control information comprises one or more transmission indication information, which is used to indicate a transmission restriction manner of all or part of sub-channels in the adjacent channel and / or the alternative adjacent channel based on the OBSS PPDU transmission bandwidth. The transmission restriction manner is used to indicate a manner of limiting transmission.

[0151] In the embodiments of the present application, the transmission indication information can be referred to as NCPA information or ACT information. The field carrying the transmission indication information in the OBSS PPDU can be referred to as NPCA field or ACT field.

[0152] In some embodiments, the second channel control information comprises: first transmission indication information, which indicates a transmission restriction manner of the adjacent channel based on the OBSS PPDU transmission bandwidth.

[0153] Correspondingly, the second channel control information includes one transmission indication information, i.e., the first transmission indication information, which is used to indicate the transmission restriction mode of the entire adjacent channel and / or the alternative adjacent channel, i.e., to define the transmission restriction mode of the entire adjacent channel.

[0154] It can be understood that the transmission restriction modes of different sub-channels in the adjacent channel and / or the alternative adjacent channel are the same.

[0155] In some embodiments, the second channel control information includes:

[0156] a plurality of second transmission indication information, which is used to indicate the transmission restriction mode of a corresponding channel in the adjacent channel based on the OBSS PPDU transmission bandwidth.

[0157] Correspondingly, the second channel control information includes a plurality of transmission indication information, i.e., a plurality of second transmission indication information, which is used to indicate the transmission restriction mode of part of the sub-channels in the entire adjacent channel and / or the alternative adjacent channel, i.e., to define the transmission restriction of part of the channels of the entire adjacent channel respectively.

[0158] In an example, the second channel control information includes four second transmission indication information, wherein the first second transmission control information is used to indicate the transmission restriction mode of the sub-channel closest to the OBSS PPDU transmission bandwidth, the second transmission control information is used to indicate the transmission restriction mode of the second sub-channel closest to the OBSS PPDU transmission bandwidth, the third transmission control information is used to indicate the transmission restriction mode of the third sub-channel closest to the OBSS PPDU transmission bandwidth, and the fourth transmission control information is used to indicate the transmission restriction mode of the fourth sub-channel closest to the OBSS PPDU transmission bandwidth.

[0159] In the embodiments of the present application, in the case that the second transmission indication information does not exist in the corresponding sub-channel in the adjacent channel bandwidth or the alternative adjacent channel bandwidth based on the OBSS PPDU transmission bandwidth, the second transmission indication information is the same as the first transmission indication information or the second transmission indication information.

[0160] In an example, for the second second transmission indication information, when the OBSS PPDU transmission width is 20mhz or 40mhz, the transmission indication information is reserved or the same as the first second transmission indication information. In an example, for the third second transmission indication information, when the OBSS PPDU transmission width is 20mhz or 40mhz, the transmission indication information is reserved or the same as the first second transmission indication information.

[0161] In an example, for the fourth second transmission indication information, the transmission indication information is reserved or same as the first second transmission indication information when the OBSS PPDU transmission width is 20mhz, and the transmission indication information is reserved or same as the second second transmission indication information when the OBSS PPDU transmission width is 40mhz.

[0162] In the embodiments of the present application, the transmission indication information in the second channel control information represents different transmission restriction manners based on different values.

[0163] In some embodiments, the transmission restriction manner is one of one or more PPDU-based transmission restriction manners, or one of one or more TXOP-based transmission restriction manners. The PPDU-based transmission restriction manner can be understood as a PPDU level transmission restriction. The TXOP-based transmission restriction manner can be understood as a TXOP level transmission restriction.

[0164] In some embodiments, the one or more PPDU-based transmission restriction manners include one or more of:

[0165] A first transmission manner, the first transmission manner is that during the OBSS PPDU transmission, the transmission of the corresponding channel in the adjacent channel based on the OBSS PPDU transmission bandwidth is allowed and not restricted;

[0166] A second transmission manner, the second transmission manner is that during the OBSS PPDU transmission, the transmission of the corresponding channel in the adjacent channel based on the OBSS PPDU transmission bandwidth is not allowed;

[0167] A third transmission manner, the third transmission manner is that during the OBSS PPDU transmission, the transmission of the corresponding channel in the adjacent channel and the alternative adjacent channel based on the OBSS PPDU transmission bandwidth is not allowed;

[0168] A fourth transmission manner, the fourth transmission manner is that during the OBSS PPDU transmission, the transmission of the corresponding channel in the adjacent channel based on the OBSS PPDU transmission bandwidth before the end of the OBSS PPDU is allowed;

[0169] A fifth transmission manner, the fifth transmission manner is that during the OBSS PPDU transmission, the transmission of the corresponding channel in the adjacent channel based on the OBSS PPDU transmission bandwidth is delayed;

[0170] A sixth transmission manner, the sixth transmission manner is that during the OBSS PPDU transmission, the transmission of the corresponding channel in the adjacent channel and the alternative adjacent channel based on the OBSS PPDU transmission bandwidth is delayed.

[0171] The first transmission manner can be understood as that during the OBSS PPDU transmission, the transmission in the corresponding subchannel in the adjacent channel based on the OBSS PPDU transmission bandwidth is allowed and not restricted. In an example, the first transmission indication information indicates the first transmission manner, and then during the OBSS PPDU transmission, the transmission in the subchannel in the entire adjacent channel based on the OBSS PPDU transmission bandwidth is allowed and not restricted. In an example, the first second transmission indication information indicates the first transmission manner, and then during the OBSS PPDU transmission, the transmission in the subchannel closest to the OBSS PPDU transmission bandwidth in the adjacent channel based on the OBSS PPDU transmission bandwidth is allowed and not restricted. In some embodiments, the first transmission manner can be identified as ACT allowed and not restricted (ACT_ALLOW_AND_NOT_RESTRICTED).

[0172] The second transmission manner can be understood as that during the current OBSS PPDU transmission, the transmission in the corresponding subchannel in the adjacent channel based on the current PPDU transmission bandwidth is not allowed (or not recommended) or the corresponding subchannel is punctured. In an example, the first transmission indication information indicates the second transmission manner, and then during the OBSS PPDU transmission, the transmission in the subchannel in the entire adjacent channel based on the OBSS PPDU transmission bandwidth is not allowed or punctured. In an example, the second second transmission indication information indicates the second transmission manner, and then during the OBSS PPDU transmission, the transmission in the second subchannel closest to the OBSS PPDU transmission bandwidth in the adjacent channel based on the OBSS PPDU transmission bandwidth is not allowed or punctured. In some embodiments, the second transmission manner can be identified as PPDU level disallowed ACT (ACT_DISALLOW_FOR_PPDU_LEVEL).

[0173] The third transmission manner can be understood as that during the current OBSS PPDU transmission, the transmission in the corresponding subchannel in the adjacent channel and the alternative adjacent based on the current PPDU transmission bandwidth is not allowed (or not recommended) or punctured. In some embodiments, the third transmission manner can be identified as PPDU level disallowed ACT and AACT (ACT_AND_AACT_DISALLOW_FOR_PPDU_LEVEL).

[0174] The fourth transmission manner can be understood as that during the current OBSS PPDU transmission, only the transmission in the corresponding subchannel in the adjacent channel based on the OBSS PPDU transmission bandwidth before the end of the current PPDU is allowed. In some embodiments, the fourth transmission manner can be identified as restricted before the end of the PPDU (ACT_RESTRICTED_AND_BEFORE_END_OF_PPDU).

[0175] The fifth transmission manner can be understood as delaying the adjacent channel transmission based on the bandwidth of the OBSS PPDU transmission during the current OBSS PPDU transmission, i.e., only allowing the transmission in the corresponding subchannel in the adjacent channel based on the bandwidth of the PPDU transmission after the end of the current PPDU transmission. In some embodiments, the fifth transmission manner can be identified as ACT_DELAYED.

[0176] The sixth transmission manner can be understood as delaying the adjacent channel transmission and the alternative adjacent channel transmission based on the bandwidth of the OBSS PPDU transmission during the current OBSS PPDU transmission, i.e., only allowing the transmission in the corresponding subchannel in the adjacent channel and the alternative adjacent channel based on the bandwidth of the OBSS PPDU transmission after the end of the current OBSS PPDU transmission. In some embodiments, the sixth transmission manner can be identified as ACT_AND_AACT_DELAYED.

[0177] In some embodiments, the one or more TXOP-based transmission restriction manners include one or more of the following:

[0178] The seventh transmission manner is that the transmission in the corresponding subchannel in the adjacent channel based on the bandwidth of the OBSS PPDU transmission is allowed and not restricted during the TXOP in which the OBSS PPDU is located;

[0179] The eighth transmission manner is that the transmission in the corresponding subchannel in the adjacent channel based on the bandwidth of the OBSS PPDU transmission is not allowed during the TXOP in which the OBSS PPDU is located;

[0180] The ninth transmission manner is that the transmission in the corresponding subchannel in the adjacent channel and the alternative adjacent channel based on the bandwidth of the OBSS PPDU transmission is not allowed during the TXOP in which the OBSS PPDU is located.

[0181] The seventh transmission manner can be understood as that during the transmission of the TXOP where the OBSS PPDU is located, the transmission in the corresponding subchannel in the adjacent channel based on the transmission bandwidth of the OBSS PPDU is allowed and not restricted. In an example, the first transmission indication information indicates the seventh transmission manner, then during the transmission of the TXOP where the OBSS PPDU is located, the transmission in the subchannel in the entire adjacent channel based on the transmission bandwidth of the OBSS PPDU is allowed and not restricted. In an example, the second transmission indication information indicates the seventh transmission manner, then during the transmission of the TXOP where the OBSS PPDU is located, the transmission in the subchannel closest to the transmission bandwidth of the OBSS PPDU in the adjacent channel based on the transmission bandwidth of the OBSS PPDU is allowed and not restricted. In some embodiments, the seventh transmission manner can be identified as ACT allowed and not restricted (ACT_ALLOW_AND_NOT_RESTRICTED).

[0182] The eighth transmission manner can be understood as that during the transmission of the TXOP where the current OBSS PPDU is located, the transmission in the corresponding subchannel in the adjacent channel based on the transmission bandwidth of the current PPDU is not allowed (or not suggested) or the corresponding subchannel is punctured. In an example, the first transmission indication information indicates the eighth transmission manner, then during the transmission of the TXOP where the current OBSS PPDU is located, the transmission in the subchannel in the entire adjacent channel based on the transmission bandwidth of the OBSS PPDU is not allowed or punctured. In an example, the second transmission indication information indicates the eighth transmission manner, then during the transmission of the TXOP where the current OBSS PPDU is located, the transmission in the second subchannel closest to the transmission bandwidth of the OBSS PPDU in the adjacent channel based on the transmission bandwidth of the OBSS PPDU is not allowed or punctured.

[0183] In some embodiments, the eighth transmission manner can be identified as disallowed ACT for TXOP level (ACT_DISALLOW_FOR_TXOP_LEVEL).

[0184] The ninth transmission manner can be understood as that during the transmission of the TXOP where the current OBSS PPDU is located, the transmission in the corresponding subchannel in the adjacent channel and the alternative adjacent based on the transmission bandwidth of the current PPDU is not allowed (or not suggested) or punctured. In some embodiments, the ninth transmission manner can be identified as disallowed ACT and AACT for TXOP level (ACT_AND_AACT_DISALLOW_FOR_TXOP_LEVEL).

[0185] For example, based on the adjacent channel and the alternative adjacent channel shown in FIG. 6, the NPCA operating channel includes the subchannel 603 to the subchannel 606, the second channel control information includes the first transmission indication information, and the transmission restriction mode indicated by the first transmission indication information is the third transmission mode. During the OBSS PPDU transmission, no transmission is initiated or performed on the subchannel 603 to the subchannel 606 included in the NPCA operating channel. In this case, the first STA does not initiate or perform the transmission of the NPCA-based PPDU on the subchannel 603 and the subchannel 603.

[0186] For example, based on the adjacent channel and the alternative adjacent channel shown in FIG. 6, the NPCA operating channel includes the subchannel 603 to the subchannel 606, the second channel control information includes four second transmission indication information corresponding to the subchannel 603 to the subchannel 606, respectively, wherein the first second transmission indication information corresponding to the subchannel 603 indicates the first transmission mode, the second second transmission indication information corresponding to the subchannel 604 indicates the first transmission mode, the third second transmission indication information corresponding to the subchannel 605 indicates the second transmission mode, and the fourth second transmission indication information corresponding to the subchannel 606 indicates the second transmission mode. During the OBSS PPDU transmission, the first STA initiates or performs the transmission on the subchannel 603 and the subchannel 604, and does not initiate or perform the transmission on the subchannel 605 and the subchannel 606.

[0187] In some embodiments, the determining, based on the second channel control information, whether the first STA initiates or performs the transmission on all or part of the subchannels in the adjacent channel and / or the alternative adjacent channel based on the OBSS PPDU transmission bandwidth includes:

[0188] In a case where it is determined that the first STA satisfies the second condition, determining, based on the second channel control information, whether to initiate or perform the transmission on all or part of the subchannels in the adjacent channel and / or the alternative adjacent channel based on the OBSS PPDU transmission bandwidth.

[0189] In a case where the second condition exists, the first STA determines whether the second condition is satisfied. If the second condition is satisfied, the first STA determines, based on the second channel control information, whether the first STA initiates or performs the transmission on all or part of the subchannels in the adjacent channel and / or the alternative adjacent channel based on the OBSS PPDU transmission bandwidth. If the second condition is not satisfied, no determination is made as to whether to initiate or perform the transmission on all or part of the subchannels in the adjacent channel and / or the alternative adjacent channel based on the OBSS PPDU transmission bandwidth.

[0190] In some embodiments, the second condition comprises:

[0191] Condition 5, the first STA detects a packet detection value of the OBSS PPDU is greater than a second PD threshold.

[0192] The second PD threshold in Condition 5 can be understood as a PD for adjacent channel and / or alternative adjacent channel transmission restriction, i.e. a maximum PD value for NPCA adjacent channel transmission, which can be predefined, or indicated by the first information, or indicated by the second information.

[0193] In case that the first PD threshold and the second PD threshold are defined or indicated in the same way, it can be understood that the first PD threshold and the second PD threshold are the same PD threshold.

[0194] In some embodiments, the second information further comprises: second condition information, the second condition information being used to determine whether the first STA satisfies the second condition; the second condition information comprises:

[0195] a second PD value, the second PD value being used to indicate the second PD threshold.

[0196] In some embodiments, the second PD value can be understood as a deviation of the maximum PD value for NPCA adjacent channel transmission carried by the OBSS PPDU, and the second PD value plus a set deviation value generates the value of the maximum PD for NPCA adjacent channel transmission, i.e. the second PD threshold.

[0197] In some embodiments, the field carrying the second PD value in the OBSS PPDU can be referred to as a received signal strength threshold field.

[0198] In some embodiments, the first STA determines whether to initiate transmission or perform transmission on all or part of the subchannels in the adjacent channel and / or alternative adjacent channel based on the OBSS PPDU transmission bandwidth based on the first channel control information and / or the second channel control information.

[0199] In an example, in case that the first STA determines whether to initiate transmission or perform transmission on all or part of the subchannels in the adjacent channel and / or alternative adjacent channel based on the OBSS PPDU transmission bandwidth based on the first channel control information, the first channel control information is used to determine the subchannels on which transmission is initiated or performed based on NPCA, i.e. on which subchannels transmission is performed.

[0200] In an example, the first STA determines, based on the second channel control information, a transmission restriction manner of each subchannel in the adjacent channel and / or the alternative adjacent channel based on the OBSS PPDU transmission bandwidth in a case that the first STA initiates transmission or performs transmission on all or part of the subchannels in the adjacent channel and / or the alternative adjacent channel based on the first channel control information.

[0201] In an example, the first STA determines, based on the first channel control information and the second channel control information, whether the subchannels based on the NPCA transmission can be determined based on the first channel control information and the transmission restriction manner on the subchannels can be determined based on the second channel control information in a case that the first STA initiates transmission or performs transmission on all or part of the subchannels in the adjacent channel and / or the alternative adjacent channel based on the OBSS PPDU transmission bandwidth.

[0202] In an embodiment of the present application, the behavior or rule of the NPCA operation determined by the first STA based on the first information and / or the second information includes one or more of the following:

[0203] Behavior 1, when the NPCA main channel and / or the auxiliary channel corresponding to the NPCA operation is located in the adjacent channel of the OBSS PPDU, and the first information and / or the second information indicates that the transmission in the adjacent channel based on the OBSS PPDU transmission bandwidth is allowed and is not restricted, the first STA can initiate the NPCA operation on the corresponding NPCA main channel and / or auxiliary channel during the current OBSS PPDU transmission, and the operation is not restricted by the adjacent channel transmission.

[0204] Behavior 2, when the NPCA main channel and / or the auxiliary channel corresponding to the NPCA operation is located in the adjacent channel of the OBSS PPDU, and the first information and / or the second information indicates that the corresponding channel in the adjacent channel is not allowed to initiate or perform transmission, the first STA does not initiate or perform transmission on the NPCA main channel during the OBSS PPDU transmission, wherein the first STA can not switch to the NPCA main channel during the current OBSS PPDU transmission, or the first STA switches to the NPCA channel after identifying the OBSS PPDU, such as does not initiate transmission or delays transmission after competing for the TXOP during the current PPDU transmission.

[0205] Behavior 3, when the corresponding NPCA primary and / or secondary channel of the NPCA operation is located on an adjacent channel to the OBSS PPDU, and the first and / or second information indicates that transmission is allowed to be initiated or conducted on the primary channel but not on the corresponding secondary channel (or the transmission on the corresponding secondary channel is punctured), the first STA can initiate or conduct transmission on the NPCA primary channel but not on the corresponding secondary channel (or the transmission on the corresponding secondary channel is punctured) during the current OBSS PPDU transmission, wherein the first STA can switch to the NPCA primary channel to contend for a TXOP and initiate transmission during the current OBSS PPDU transmission, but does not contend for a TXOP or initiate transmission on the corresponding secondary channel, or the transmission on the corresponding secondary channel is punctured.

[0206] Behavior 4, when the corresponding NPCA primary and / or secondary channel of the NPCA operation is located on an adjacent channel to the OBSS PPDU, and the first and / or second information indicates that during the current PPDU transmission, only adjacent channel transmission based on the PPDU transmission bandwidth is allowed to be conducted before the end of the current PPDU, the first STA switches to the NPCA primary and / or secondary channel and contends for a TXOP or initiates transmission during the current OBSS PPDU transmission, the TXOP or frame exchange sequence initiated on the NPCA primary and / or secondary channel should be terminated before the end of the current PPDU.

[0207] In some embodiments, the first STA determines whether to initiate or conduct transmission on all or part of the subchannels in the adjacent channel and / or alternative adjacent channel based on the OBSS PPDU transmission bandwidth based on the first indication information.

[0208] In an example, when the first indication information does not indicate whether to initiate or conduct transmission on all or part of the subchannels in the adjacent channel and / or alternative adjacent channel based on the OBSS PPDU transmission bandwidth based on the second information, the first STA determines whether to initiate or conduct transmission on all or part of the subchannels in the adjacent channel and / or alternative adjacent channel based on the first channel control.

[0209] In an example, when the first indication information does not indicate whether to initiate or conduct transmission on all or part of the subchannels in the adjacent channel and / or alternative adjacent channel based on the OBSS PPDU transmission bandwidth based on the second information, the first STA determines whether to initiate or conduct transmission on all or part of the subchannels in the adjacent channel and / or alternative adjacent channel based on the first channel control.

[0210] In some embodiments, the first STA determines whether to initiate or proceed with a transmission on all or part of the sub-channels in the adjacent channel and / or the alternative adjacent channel based on the OBSS PPDU transmission bandwidth based on one or more of the following conditions being met:

[0211] Condition 1, the first STA detects or receives a received signal strength level value of the OBSS PPDU that is greater than a first packet detection (PD) threshold;

[0212] Condition 2, the second BSS and the first BSS are BSSs of a same NPCA group;

[0213] Condition 4, a power at which the first STA performs the NPCA operation belongs to a first power range.

[0214] Condition 5, the first STA detects a packet detection value of the OBSS PPDU that is greater than a second PD threshold.

[0215] In some embodiments, the first information further includes: NPCA control information, the NPCA control information being used to indicate a control parameter related to the NPCA operation.

[0216] In embodiments of the present application, the first STA determines a control parameter related to the NPCA operation based on the NPCA control information included in the first information, and determines whether to initiate or proceed with a transmission on all or part of the sub-channels in the adjacent channel and / or the alternative adjacent channel based on the OBSS PPDU transmission bandwidth based on the first channel control information and / or the second channel control information in the NPCA operation controlled based on the control parameter related to the NPCA operation.

[0217] In some embodiments, the control parameter related to the NPCA operation includes one or more of the following: indication information indicating whether to perform the NPCA operation; an NPCA primary channel; an NPCA operation channel; and indication information indicating whether to allow the NPCA operation based on the ACT.

[0218] In some embodiments, the NPCA control information includes one or more of the following:

[0219] Second indication information, the second indication information being used to indicate whether to allow a STA of the first BSS to perform the NPCA operation;

[0220] Third indication information, the third indication information being used to indicate an NPCA primary channel;

[0221] Fourth indication information, the fourth indication information being used to indicate an NPCA operation channel;

[0222] a fifth indication information, the fifth indication information being used to indicate whether the STAs of the first BSS are allowed to transmit over all or part of the sub-channels in the adjacent channel and / or the alternative adjacent channel based on the OBSS PPDU transmission bandwidth;

[0223] a fourth bitmap, the fourth bitmap being used to indicate whether the transmission of the sub-channels in the corresponding positions of the channels included in the first BSS bandwidth is not allowed.

[0224] The second indication information is used to indicate whether the STAs of the first BSS are allowed to perform the NPCA operation, i.e., the indication information used to determine whether to perform the NPCA operation. The encoding value of the second indication information can be taken as the sub-channel number corresponding to the NPCA primary channel. The second indication information can indicate whether the STAs are allowed to perform the NPCA operation, i.e., the NPCA-based transmission, based on different values. In an example, when the value of the second indication information is 1, it indicates that the NPCA operation or the NPCA-based transmission is not allowed. When the value of the second indication information is 0, the NPCA operation or the NPCA-based transmission is allowed. In some embodiments, the second indication information can be identified as NPCA Disallowed.

[0225] The third indication information is used to indicate which channel in the bandwidth occupied by the first BSS is the NPCA primary channel, i.e., the third indication information is used to determine the NPCA primary channel. In an example, the encoding value of the 20mhz sub-channel with the lowest frequency in the set of channels in the bandwidth occupied by the BSS is 0, and each incremental value corresponds to the next higher frequency 20mhz sub-channel. In some embodiments, the third indication information can be identified as NPCA Primary Channel.

[0226] The fourth indication information is used to indicate which channels in the bandwidth occupied by the first BSS are the NPCA operation channels, i.e., the fourth indication information is used to determine the NPCA operation channels. In some embodiments, the fourth indication information is a bitmap, the lowest numbered bit corresponds to the sub-channel with the lowest frequency in the set of all sub-channels in the bandwidth of the BSS, and each consecutive bit in the bitmap corresponds to the next higher frequency sub-channel. In some embodiments, a bit in the bitmap is set to 1, indicating that the sub-channel corresponding to the bit position is the NPCA operation channel, and a bit in the bitmap is set to 0, indicating that the sub-channel corresponding to the bit position is not the NPCA operation channel.

[0227] The fifth indication information is used to indicate whether the STA of the first BSS is allowed to transmit through all or part of the sub-channels in the adjacent channel and / or alternative adjacent channel based on the OBSS PPDU transmission bandwidth. That is, the fifth indication information is used to determine the indication information of whether the STA of the first BSS is allowed to perform the NPCA operation based on the ACT. The fifth indication information indicates whether the STA of the first BSS is allowed to transmit through all or part of the sub-channels in the adjacent channel and / or alternative adjacent channel based on the OBSS PPDU transmission bandwidth based on different values. In an example, when the fifth indication information is 1, it indicates that the transmission is not allowed to be initiated or performed through all or part of the sub-channels in the adjacent channel based on the OBSS PPDU transmission bandwidth. When the fifth indication information is 0, it indicates that there is no adjacent channel transmission restriction based on the OBSS PPDU transmission bandwidth. In some embodiments, the fifth indication information is used to indicate whether the STA of the first BSS is allowed to transmit through all or part of the sub-channels in the adjacent channel based on the OBSS PPDU transmission bandwidth when the first condition or the second condition is met.

[0228] In the embodiments of the present application, the fourth bitmap is used to indicate whether each sub-channel included in the bandwidth of the first BSS is allowed to transmit. The sub-channels in the bandwidth of the first BSS correspond to the bits of the fourth bitmap. In some embodiments, one bit in the fourth bitmap can correspond to one sub-channel. In an example, the bandwidth of the sub-channel is 20MHz, the low bit of the fourth bitmap corresponds to the 20MHz sub-channel with the lowest frequency in the set of all 20MHz sub-channels in the bandwidth of the first BSS, and each consecutive bit in the fourth bitmap corresponds to the 20MHz sub-channel with the next higher frequency. In some embodiments, the bits in the bitmap are used to indicate whether the corresponding sub-channel is allowed to initiate transmission or perform transmission based on different values. In an example, the bit in the fourth bitmap is set to 1, indicating that the sub-channel corresponding to the bit is not allowed to initiate transmission or perform transmission; the bit in the fourth bitmap is set to 0, indicating that the sub-channel corresponding to the bit is allowed to initiate transmission or perform transmission, that is, there is no transmission restriction on the sub-channel corresponding to the bit. In some embodiments, not allowing the sub-channel to perform transmission can also be replaced by not allowing the transmission of the sub-channel to be punctured. In some embodiments, the fourth bitmap can be referred to as the disallowed sub-channel bitmap.

[0229] It should be noted that the first information including the NPCA control information in the embodiments of the present application can be used to determine the control parameters related to the NPCA operation when the NPCA operation channel includes all or part of the sub-channels in the adjacent channel and / or alternative adjacent channel, and can also be used to determine the control parameters related to the NPCA operation when the NPCA operation channel does not include all or part of the sub-channels in the adjacent channel and / or alternative adjacent channel.

[0230] For example, based on the fourth bitmap, the first STA determines whether to initiate or conduct transmission on all or part of the sub-channels in the adjacent channel and / or alternative adjacent channel based on the OBSS PPDU transmission bandwidth. For one of the sub-channels in the adjacent channel or alternative adjacent channel of the transmission channel of the OBSS PPDU, if the bit corresponding to the sub-channel in the fourth bitmap indicates that the transmission of the sub-channel is not allowed, the first STA determines not to initiate or conduct transmission on the sub-channel; if the bit corresponding to the sub-channel in the first bitmap indicates that the transmission of the sub-channel is allowed, the first STA determines to initiate or conduct transmission on the sub-channel.

[0231] For example, based on the first bitmap and the fourth bitmap, the first STA determines whether to initiate or conduct transmission on all or part of the sub-channels in the adjacent channel and / or alternative adjacent channel based on the OBSS PPDU transmission bandwidth. For one of the sub-channels in the adjacent channel or alternative adjacent channel of the transmission channel of the OBSS PPDU, if the bit corresponding to the sub-channel in the first bitmap indicates that the transmission of the sub-channel is not allowed, or the bit corresponding to the sub-channel in the fourth bitmap indicates that the transmission of the sub-channel is not allowed, the first STA determines not to initiate or conduct transmission on the sub-channel; if the bit corresponding to the sub-channel in the first bitmap indicates that the transmission of the sub-channel is allowed and the bit corresponding to the sub-channel in the fourth bitmap indicates that the transmission of the sub-channel is allowed, the first STA determines to initiate or conduct transmission on the sub-channel.

[0232] For example, based on the adjacent channel and alternative adjacent channel shown in FIG. 6, the first STA determines to initiate or conduct transmission of the PPDU based on the NPCA on the sub-channel 603 and the sub-channel 606, because the 4 bits indicating the sub-channel 603 and the sub-channel 606 in the fourth bitmap are 1001, where 1 indicates that the transmission is not allowed, and 0 indicates that the transmission is allowed, and the sub-channel 604 and the sub-channel 605 are not allowed to transmit.

[0233] In the embodiments of the present application, the first STA can determine whether to initiate or conduct transmission on all or part of the sub-channels in the adjacent channel and / or alternative adjacent channel based on the OBSS PPDU transmission bandwidth based on the first bitmap and the fourth bitmap.

[0234] In an example, the first STA determines the sub-channels allowed to conduct transmission based on the fourth bitmap, and determines the sub-channels in the adjacent channel and / or alternative adjacent channel allowed to initiate or conduct transmission among the sub-channels allowed to initiate or conduct transmission based on the first bitmap.

[0235] For example, the first STA determines whether to initiate or perform transmission on each subchannel in the NPCA operating channel based on the fourth bitmap. For a subchannel in the NPCA operating channel, if the bit corresponding to the subchannel in the fourth bitmap indicates that the subchannel is not allowed to transmit, the first STA determines not to initiate or perform transmission on the subchannel. If the bit corresponding to the subchannel in the first bitmap indicates that the subchannel is allowed to transmit, the first STA determines to initiate or perform transmission on the subchannel.

[0236] In the embodiments of the present application, the first STA can determine whether the first condition or the second condition is met. If the first condition or the second condition is met, the first STA determines whether the NPCA operation can be performed and on which candidate subchannels the NPCA operation can be performed based on the NPCA control information.

[0237] In the case where the NPCA operating channel includes all or part of the subchannels of the adjacent channel and / or the alternative adjacent channel, the first STA determines on which subchannels in the candidate subchannels, i.e., target subchannels, to initiate or perform transmission based on the first channel control information and / or the second channel control information. Further, the first STA can also determine a transmission restriction mode indicating how to perform transmission on the target subchannels.

[0238] In some embodiments, the NPCA control information further includes one or more of the following:

[0239] The sixth indication information is used to indicate whether to set a transmission mode of the NPCA operation triggered by a PPDU transmitted by the first STA.

[0240] In the embodiments of the present application, the NPCA operation performed by the first STA is the NPCA operation triggered by an OBSS PPDU transmitted by the second STA, i.e., the NPCA operation triggered by the second STA.

[0241] In the embodiments of the present application, the PPDU transmitted by the first STA can also trigger the NPCA operation of the second STA, and the sixth indication information is used to control the transmission restriction mode of the NPCA operation of the second STA.

[0242] In some embodiments, the value of the sixth indication information is 1, indicating the transmission restriction mode of the NPCA operation of the second STA. If the value of the sixth indication information is 0, the transmission restriction mode of the NPCA operation of the second STA is not indicated.

[0243] In some embodiments, the transmission restriction mode includes one or more of the following transmission modes: the second transmission mode, the third transmission mode, and the ninth transmission mode.

[0244] In the embodiments of the present application, the sixth indication information can be identified as PPDU SIG NPCA allow. In an example, the PPDU SIG NPCA allow indicates whether the first Non-AP STA can set the TXVECTOR parameter to ACT_DISALLOW_FOR_PPDU_LEVEL, ACT__AND_AACT_DISALLOW_FOR_PPDU_LEVEL, or ACT_AND_AACT_DISALLOW_FOR_TXOP_LEVEL. Wherein, the value of the PPDU SIG NPCA allow is 1, indicating that the first Non-AP STA can set the TXVECTOR parameter to ACT_DISALLOW_FOR_PPDU_LEVEL, ACT__AND_AACT_DISALLOW_FOR_PPDU_LEVEL, or ACT_AND_AACT_DISALLOW_FOR_TXOP_LEVEL; otherwise, the value of the PPDU SIG NPCA allow is 0.

[0245] In some embodiments, the controlling the NPCA operation of the first STA based on the first information and / or the second information comprises one or more of:

[0246] determining whether to switch from a primary channel of the first BSS to a NPCA primary channel based on the first information and / or the second information;

[0247] determining whether to initiate a NPCA operation based on the first information and / or the second information;

[0248] determining a NPCA operation parameter in the case of initiating a NPCA operation based on the first information and / or the second information.

[0249] In some embodiments, the NPCA operation parameter comprises one or more of:

[0250] a first parameter for indicating a channel for performing a NPCA-based transmission;

[0251] a second parameter for indicating a bandwidth of a NPCA operation channel;

[0252] a third parameter for indicating a duration of a transmission opportunity or a frame exchange sequence of a NPCA.

[0253] In the embodiments of the present application, the first STA determines whether to switch from the primary channel of the first BSS to the NPCA primary channel, and / or whether to initiate the NPCA operation, and / or determines the NPCA operation parameters based on the first information and / or the second information, and uses the determined parameters for transmission during the NPCA operation. The NPCA operation includes which sub-channels in the NPCA operation channel to initiate or perform transmission, the bandwidth of the corresponding channel in the NPCA operation channel, the TXOP or frame exchange sequence length of the NPCA operation, and the like.

[0254] In an example, the first STA determines whether to switch from the primary channel of the first BSS to the NPCA primary channel based on the second indication information. In an example, the first STA determines whether to switch from the primary channel of the first BSS to the NPCA primary channel based on the first channel control information and / or the second channel control information. In an example, the first STA determines whether to initiate the NPCA operation based on the first channel control information and / or the second channel control information. In an example, the first STA determines whether to initiate the NPCA operation based on the NPCA based on the second indication information. In an example, the first STA determines the channel for the NPCA based transmission based on the third indication information, the fourth indication information, and the first channel control information and / or the second channel control information. In an example, the first STA determines the bandwidth of the NPCA operation channel based on the channel for the NPCA transmission. In an example, the first STA determines the transmission opportunity or frame exchange sequence length of the NPCA based on the first channel control information and / or the second channel control information. In an example, the first STA determines to switch from the primary channel of the first BSS to the NPCA primary channel in the case of determining to initiate the NPCA operation, and then switches from the primary channel of the first BSS to the NPCA primary channel and initiates the NPCA operation. In an example, the first STA can switch from the primary channel of the first BSS to the NPCA primary channel, and determines whether to initiate the NPCA operation, and initiates the NPCA operation in the case of determining to initiate the NPCA operation.

[0255] In the wireless communication method provided by the embodiments of the present application, the first STA that intends to initiate the NPCA operation determines whether to initiate the NPCA operation and / or determines the related parameters of the NPCA operation (including which sub-channels of the secondary channels as the NPCA operation channels to initiate transmission, the bandwidth of the NPCA operation channel, the transmission power, the TXOP or the frame exchange sequence length of the NPCA operation, etc.) based on the first information (the adjacent channel transmission requirement and strategy information and / or the alternative adjacent channel transmission requirement and strategy information) configured by the first BSS and / or the second information (the adjacent channel transmission restriction information and / or the alternative adjacent channel transmission restriction information indication carried by the OBSS PPDU), and performs transmission during the NPCA operation by using the determined parameters, so that the transmission of the station during the NPCA operation and the transmission of the OBSS station can avoid or mitigate the adjacent frequency interference caused to each other.

[0256] In some embodiments, the method further includes switching, by the first STA, to the NPCA primary channel and / or the NPCA secondary channel.

[0257] In an example, the first STA switches to the NPCA primary channel. In an example, the first STA switches to the NPCA secondary channel. In an example, the first STA switches to the NPCA primary channel and the NPCA secondary channel.

[0258] In an example, when the first STA satisfies the NPCA operation trigger condition, the first STA switches from the primary channel of the first BSS to the NPCA primary channel and / or the NPCA secondary channel, and controls the NPCA operation of the first STA based on the first information and / or the second information.

[0259] In an example, when the first STA satisfies the NPCA operation trigger condition, the first STA controls the NPCA operation of the first STA based on the first information and / or the second information, and switches from the primary channel of the first BSS to the NPCA primary channel and / or the NPCA secondary channel and performs the NPCA operation (i.e., performs the enhanced distributed channel access (EDCA) operation, receives or transmits a PPDU in the NPCA operation channel) when it is determined to initiate or perform the NPCA operation.

[0260] In the embodiments of the present application, the control of the NPCA operation of the first STA includes determining which sub-channels in the NPCA operation channel to initiate transmission or perform transmission, and in particular, the condition for initiating transmission in one or more sub-channels of the NPCA operation channel is that the first STA acquires the TXOP in these sub-channels.

[0261] In the embodiments of the present application, the NPCA operating channel includes an NPCA primary channel and zero, one or more NPCA non-primary channels, and the NPCA primary channel is also referred to as an NPCA anchor channel.

[0262] The NPCA operating channel includes one or more non-primary sub-channels of the first BSS operating channel, or all or part of the sub-channels of the NPCA operating channel are located outside the operating bandwidth of the first BSS.

[0263] In the embodiments of the present application, the NPCA operating channel is pre-negotiated, and it is necessary to determine which corresponding sub-channels in the NPCA operating channel to compete for TXOP and / or initiate transmission according to the first information and / or the second information. Among them, in the case of including an NPCA secondary channel, transmission can only be initiated after TXOP is competed for on the NPCA primary channel, while for the NPCA secondary channel, TXOP right needs to be obtained on the NPCA primary channel at the same time through a priority interframe space (PIFS) lookback to see whether the NPCA secondary channel is idle, and if the NPCA corresponding secondary channel is idle within the PIFS period of the lookback, TXOP right is also obtained on the NPCA corresponding secondary channel.

[0264] In the embodiments of the present application, the NPCA operation triggering condition can be understood as a condition for triggering NPCA operation, that is, a condition for triggering switching to the NPCA primary channel and / or the NPCA secondary channel.

[0265] In some embodiments, the condition for triggering switching to the NPCA primary channel and / or the NPCA secondary channel includes:

[0266] detecting an OBSS control frame, and / or the TXOP duration indicated by the OBSS control frame is greater than or equal to a first duration threshold; or

[0267] detecting an OBSS PPDU, and / or the transmission duration of the OBSS PPDU or the TXOP duration indicated by the OBSS PPDU is greater than or equal to a second duration threshold.

[0268] In the embodiments of the present application, the OBSS null frame can be understood as a control frame for frame exchange in the second BSS, wherein the control frame can include an initial control frame (ICF), an immediate response (IR) frame, etc.

[0269] In some embodiments, the on-TXOP duration indicated by the OBSS control frame can be indicated by a "duration" field carried by the OBSS control frame. In some embodiments, the on-TXOP duration indicated by the OBSS PPDU can be indicated by a "duration" field carried by the OBSS PPDU.

[0270] In some embodiments, the first STA is a first Non-AP STA or a first access point (AP).

[0271] In the case that the first STA is a first Non-AP STA, the first Non-AP STA detects an OBSS PPDU on a primary channel of a first basic service set (BSS) and the OBSS PPDU satisfies a non-AP controlled access (NPCA) operation trigger condition, switches from the primary channel of the first BSS to a NPCA primary channel, and determines whether to initiate a NPCA operation based on the first information and / or the second information, and transmits a PPDU on a determined subchannel in the case that the NPCA operation is initiated. The channel can be contended by the first Non-AP STA or the first AP.

[0272] In the case that the first STA is a first AP, the first AP detects an OBSS PPDU on a primary channel of a first BSS and the OBSS PPDU satisfies a non-AP controlled access (NPCA) operation trigger condition, switches from the primary channel of the first BSS to a NPCA primary channel, and determines whether to initiate a NPCA operation based on the first information and / or the second information, and transmits a PPDU on a determined subchannel in the case that the NPCA operation is initiated. The channel can be contended by the first Non-AP STA or the first AP.

[0273] In the embodiments of the present application, the PPDU based on the NPCA transmission can be sent by the first Non-AP STA to the first AP, or sent by the first AP to the first Non-AP STA.

[0274] In some embodiments, in the case that the first STA is a first Non-AP STA, the method further comprises:

[0275] The first Non-AP STA receives a first frame sent by the first AP, the first frame carrying the first information, and the first Non-AP STA is associated with the first AP.

[0276] In the case that the first STA is a first Non-AP STA, the first Non-AP STA receives the first information sent by the first AP through a first frame.

[0277] In the embodiments of the present application, the first information that the first STA can have in the case of being the first AP.

[0278] In the embodiments of the present application, the first AP can publish the first information to the associated first Non-AP STA through the first frame.

[0279] In some embodiments, the first frame is a management frame. Optionally, the first frame includes a beacon frame, an association response frame, or the like management frame.

[0280] In some embodiments, the first information is contained in a first element of the first frame.

[0281] In the embodiments of the present application, the first element can be a defined element in the first frame or a newly defined element.

[0282] If the first element is a defined element, a new field can be added in the defined element to carry the first information.

[0283] If the first element is a newly defined element, the first element can be understood as an element specially used to carry the first information.

[0284] In the embodiments of the present application, the first element can be referred to as an NPCA parameter set element.

[0285] In some embodiments, the field carrying the first bitmap in the first element can be referred to as an ACT channel bitmap field or an ACT channel bitmap subfield. The field carrying the fourth bitmap in the first element can be referred to as a disallowed subchannel bitmap field or a disallowed subchannel bitmap subfield.

[0286] In some embodiments, the field carrying the first PD value in the first element can be referred to as a NPCA adjacent channel transmission maximum PD value offset (NPCA ACT PD Max Offset) field or a NPCA adjacent channel transmission maximum PD value offset subfield. In some embodiments, the field carrying the second bitmap in the first element can be referred to as a NPCA BSS color bitmap field or a NPCA BSS color bitmap subfield. In some embodiments, the field carrying the third bitmap in the first element can be referred to as a NPCA Partial BSSID bitmap field. In some embodiments, the field carrying the NPCA PD minimum offset in the first element can be referred to as a NPCA PD Max Offset field, and the field carrying the NPCA PD maximum offset in the first element can be referred to as a NPCA PD maximum offset field. In some embodiments, the field carrying the first indication information in the first element can be referred to as an OBSS PPDU SIG NPCA mandatory field or an OBSS PPDU SIG NPCA mandatory subfield. In some embodiments, the field carrying the second indication information in the first element can be referred to as a NPCA Disallowed field or subfield. In some embodiments, the field carrying the third indication information in the first element can be referred to as a NPCA primary channel field or subfield. In some embodiments, the field carrying the fourth indication information in the first element can be referred to as a NPCA operating channel bitmap subfield or subfield. In some embodiments, the field carrying the fifth indication information in the first element can be referred to as an ACT subfield or subfield.

[0287] In the following, the wireless communication method provided by the embodiments of the present application is further described taking the first station as a Non-AP STA as an example.

[0288] The wireless communication method provided by the embodiments of the present application is an adjacent channel transmission coordination scheme based on OBSS PD, which can be used for, but not limited to, avoiding or mitigating the adjacent channel transmission interference problem that can be caused in NPCA operation.

[0289] The wireless communication method provided by the embodiments of the present application includes:

[0290] (1) Define a PD threshold based on adjacent channel transmission restriction, if the received signal strength level of the OBSS PPDU received by the station is greater than the specific PD threshold, the transmission in the corresponding channel in the adjacent channel based on the transmission bandwidth of the OBSS PPDU needs to be restricted. For example, during the transmission of the OBSS PPDU, or during the TXOP in which the OBSS PPDU is located, the transmission in the corresponding channel (all or part of the channel) in the adjacent channel based on the current PPDU transmission bandwidth is not allowed (or not recommended) to be initiated, or the transmission in the corresponding channel is punctured. Wherein, the PD threshold based on adjacent channel transmission restriction can be specified by the standard, or specified by the AP associated with the station by carrying relevant information in the management frame, or specified by the field carried by the PPDU.

[0291] (2) The AP can carry the NPCA parameter set element in the beacon frame or association response frame and other management frames to give the first information required by the station associated with the AP when performing the NPCA operation, wherein the NPCA parameter set element can include adjacent channel transmission requirement and strategy information and / or alternative adjacent channel transmission requirement and strategy information. Wherein, the adjacent channel transmission requirement and strategy information can indicate whether to restrict the adjacent channel transmission, which channels in the adjacent channel to restrict the transmission, how to restrict the adjacent channel transmission when encountering the OBSS PPDU carrying the adjacent channel transmission restriction information, and other information.

[0292] (3) The ACTR information and / or AACTR information, i.e. the second information, can also be carried in the PPDU sent by the station of a BSS, indicating whether to restrict the adjacent channel transmission and / or alternative adjacent channel transmission during the transmission of the PPDU and / or during the transmission opportunity (TXOP) in which the PPDU is located.

[0293] (4) the station of another BSS which intends to initiate the NPCA operation determines whether to initiate the NPCA operation and / or determines the related parameters of the NPCA operation (including which secondary channels as the NPCA operation channels to initiate transmission, the bandwidth of the NPCA operation channel, the TXOP or frame exchange sequence duration of the NPCA operation, etc.) based on the adjacent channel transmission requirement and policy information and / or the alternative adjacent channel transmission requirement and policy information published by the AP of the BSS where the station is located and / or the adjacent channel transmission restriction information and / or the alternative adjacent channel transmission restriction information carried by the OBSS PPDU (note: the BSS where the station which sends the PPDU is located is the OBSS of the BSS where the station which intends to initiate the NPCA operation is located, and the PPDU is an OBSS PPDU or an inter-BSS PPDU) to indicate, and transmits during the NPCA operation by using the determined related parameters of the NPCA operation, so as to avoid or mitigate the adjacent channel interference caused by the transmission of the station and the transmission of the OBSS station to each other.

[0294] In the embodiments of the present application, the center frequency of the adjacent channel is located at a distance of W MHz from the center frequency of the transmission channel of the current PPDU, and the bandwidth range of the adjacent channel is W; in addition, the center frequency of the alternative adjacent channel is located at a distance of 2W MHz from the center frequency of the transmission channel of the current PPDU, and the bandwidth range of the alternative adjacent channel is W. The adjacent channel transmission refers to the transmission by using all or part of the channels in the bandwidth range of the adjacent channel; and the alternative adjacent channel transmission refers to the transmission by using all or part of the channels in the bandwidth range of the alternative adjacent channel.

[0295] In an example, the transmission bandwidth (Bandwidth) field of the current PPDU is 20 MHz, 40 MHz or 80 MHz, and the center frequency of the adjacent channel is located at a distance of W W Hz from the center frequency of the transmission channel of the current PPDU, where W is the transmission bandwidth (Bandwidth) of the current PPDU.

[0296] For the second information, i.e., the adjacent channel transmission restriction information and the alternative adjacent channel transmission restriction information

[0297] The ACTR information includes the restriction requirement information of the adjacent channel transmission during the transmission of the current PPDU or during the TXOP where the current PPDU is located (such as the TXOP duration is indicated by the Duration field); and the AACTR information includes the restriction requirement information of the alternative adjacent channel transmission during the transmission of the current PPDU or during the TXOP where the current PPDU is located.

[0298] The ACTR information can be carried in a PPDU, or can be carried through the preamble of a PPDU, or can be carried through a field of a frame carried by a PPDU.

[0299] The ACTR information can include one or more of the following:

[0300] Adjacent channel and adjacent alternative channel transmission restriction information based on a PPDU (PPDU Level):

[0301] ACT allowed and not restricted (ACT_ALLOW_AND_NOT_RESTRICTED): transmission in a corresponding channel in an adjacent channel based on the bandwidth of the current PPDU transmission is allowed and not restricted during the current PPDU transmission or during the TXOP in which the current PPDU is located;

[0302] PPDU level disallowed ACT (ACT_DISALLOW_FOR_PPDU_LEVEL): transmission in a corresponding channel in an adjacent channel based on the bandwidth of the current PPDU transmission is disallowed (or not recommended) during the current PPDU transmission; or, if there is a specific PD threshold for adjacent channel transmission restriction (such as NPCA ACT PD Max), it means that during the current PPDU transmission, if the received signal strength level of the current PPDU received by a station of an OBSS is greater than the specific PD threshold, transmission in a corresponding channel in an adjacent channel based on the bandwidth of the current PPDU transmission is disallowed (or not recommended) or the transmission in the corresponding channel is punctured;

[0303] PPDU level disallowed ACT and AACT (ACT__AND_AACT_DISALLOW_FOR_PPDU_LEVEL): transmission in a corresponding channel in an adjacent channel and an alternative adjacent channel based on the bandwidth of the current PPDU transmission is disallowed (or not recommended) during the current PPDU transmission, or the transmission in the corresponding channel is punctured; or, if there is a specific PD threshold for adjacent channel transmission restriction (such as NPCA ACT PD Max), it means that during the current PPDU transmission, if the received signal strength level of the current PPDU received by a station of an OBSS is greater than the specific PD threshold, transmission in a corresponding channel in an adjacent channel and an alternative adjacent channel based on the bandwidth of the current PPDU transmission is disallowed (or not recommended) or the transmission in the corresponding channel is punctured;

[0304] Restrict ACT to be before end of PPDU (ACT_RESTRICTED_AND_BEFORE_END_OF_PPDU): Only allow transmission in the corresponding channel in the adjacent channel based on the PPDU transmission bandwidth before the end of the current PPDU transmission during the current PPDU transmission;

[0305] Delay ACT (ACT_DELAYED): Delay the adjacent channel transmission based on the PPDU transmission bandwidth during the current PPDU transmission, i.e., only allow transmission in the corresponding channel in the adjacent channel based on the PPDU transmission bandwidth after the end of the current PPDU transmission;

[0306] Delay ACT and AACT (ACT_AND_AACT_DELAYED): Delay the adjacent channel transmission and the alternative adjacent channel transmission based on the PPDU transmission bandwidth during the current PPDU transmission, i.e., only allow transmission in the corresponding channel in the adjacent channel and the alternative adjacent channel based on the PPDU transmission bandwidth after the end of the current PPDU transmission.

[0307] TXOP Level based adjacent channel and alternative adjacent channel transmission restriction information

[0308] ACT_ALLOW_AND_NOT_RESTRICTED: Transmission in the corresponding channel in the adjacent channel based on the PPDU transmission bandwidth is allowed and not restricted during the current PPDU transmission or the TXOP in which the current PPDU is located;

[0309] TXOP Level disallow ACT (ACT_DISALLOW_FOR_TXOP_LEVEL): Transmission in the corresponding channel in the adjacent channel based on the PPDU transmission bandwidth is not allowed (or not recommended) or punctured during the TXOP in which the current PPDU is located; or, if there is a specific PD threshold (such as NPCAACT PD Max) based on the adjacent channel transmission restriction, it indicates that during the TXOP in which the current PPDU is located, if the received signal strength level of the OBSS station receiving the current PPDU is greater than the specific PD threshold, transmission in the corresponding channel in the adjacent channel based on the PPDU transmission bandwidth is not allowed (or not recommended) or punctured;

[0310] ACT and AACT (ACT_AND_AACT_DISALLOW_FOR_TXOP_LEVEL): Disallow (or not recommend) transmission in the corresponding channels in the adjacent channels and alternate adjacent channels based on the transmission bandwidth of the current PPDU during the TXOP in which the current PPDU is located, or the transmission in the corresponding channels is punctured; or, if there is a specific PD threshold based on adjacent channel transmission restriction (such as NPCAACT PD Max), it means that during the TXOP in which the current PPDU is located, if the OBSS station receives the received signal strength level of the current PPDU greater than the specific PD threshold, it is not allowed (or not recommended) to initiate transmission in the corresponding channels in the adjacent channels and alternate adjacent channels based on the transmission bandwidth of the current PPDU, or the transmission in the corresponding channels is punctured.

[0311] For the first information, i.e., adjacent channel transmission requirement and policy information and / or alternate adjacent channel transmission requirement and policy information

[0312] The station initiating the NPCA operation determines whether to initiate the NPCA operation and / or determines the relevant parameters of the NPCA operation (including which secondary channels as the NPCA operation channels to initiate transmission, the bandwidth of the NPCA operation channel, the duration of the TXOP or frame exchange sequence of the NPCA operation, etc.) based on the adjacent channel transmission requirement and policy information and / or alternate adjacent channel transmission requirement and policy information published by the AP of the BSS in which the station is located, and / or the indication of the adjacent channel transmission restriction information and / or alternate adjacent channel transmission restriction information carried by the OBSS PPDU (note: the BSS to which the station sending the PPDU is the OBSS of the BSS in which the station initiating the NPCA operation is located, and the PPDU is an OBSS PPDU or an inter-BSS PPDU), and transmits during the NPCA operation using the determined parameters. In particular, the station initiating the NPCA operation limits the initiation (or conducts) of transmission through all or part of the channels in the adjacent channels based on the transmission bandwidth of the OBSS PPDU under the satisfaction of a given condition, wherein the given condition includes one or more of the following:

[0313] The received signal strength level of the OBSS station receiving the OBSS PPDU is greater than the PD threshold based on adjacent channel transmission restriction, wherein the PD threshold based on adjacent channel transmission restriction can be specified by the standard, or specified by the AP to which the station is associated by carrying relevant information in the management frame, or specified by the field carried by the OBSS PPDU.

[0314] The OBSS PPDU received by the station is from a specific OBSS identification information with restricted adjacent channel transmission requirement issued by the AP to which the station is associated, wherein the OBSS identification information can be indicated by the NPCA Parameter Set element in the beacon frame or management frame carried by the AP, and the NPCA BSS Color Bitmap field and / or the NPCA Partial BSSID Bitmap field in the NPCA Parameter Set element.

[0315] One or more subchannels in the adjacent channel correspond to the subchannels indicated as "not allowed to initiate (or conduct) transmission" in the "not allowed subchannel bitmap" field, i.e., the value of the bit corresponding to the one or more subchannels in the adjacent channel in the "not allowed subchannel bitmap" is set to 1.

[0316] The adjacent channel transmission restriction information indicated by the NPCA field carried by the OBSS PPDU, in particular, when the adjacent channel transmission strategy information issued by the AP to which the station is associated indicates that the transmission restriction requirement indicated by the NPCA field of the OBSS PPDU is strictly followed, i.e., the OBSS PPDU SIG NPCA mandatory field carried by the NPCA Parameter Set element is indicated as 1.

[0317] In the embodiments of the present application, the behavior and rules of the station initiating (or conducting) transmission in all or part of the channels in the adjacent channel of the OBSS PPDU transmission bandwidth when the station initiates the NPCA operation include the following:

[0318] 1. When the NPCA main channel and / or the NPCA auxiliary channel corresponding to the NPCA operation initiated by the station are located in the adjacent channel of the OBSS PPDU, and the adjacent channel transmission requirement, strategy information and / or adjacent channel transmission restriction information indicate that the adjacent channel transmission based on the OBSS PPDU transmission bandwidth is allowed and not restricted, the station can initiate the NPCA operation in the corresponding NPCA main channel and / or auxiliary channel during the current OBSS PPDU transmission, and the operation is not restricted by the adjacent channel transmission.

[0319] 2. When the NPCA main channel corresponding to the NPCA operation initiated by the station is located in the corresponding channel in the adjacent channel of the OBSS PPDU, and the adjacent channel transmission requirement, strategy information and / or adjacent channel transmission restriction information indicate that the corresponding channel in the adjacent channel is not allowed to initiate or conduct transmission, the station does not initiate transmission on the NPCA main channel during the current PPDU transmission, including that the station does not switch to the NPCA main channel during the current OBSS PPDU transmission, or the station switches to the NPCA main channel after identifying the OBSS PPDU, such as does not initiate transmission or delays transmission after competing for TXOP during the current PPDU transmission.

[0320] 3. When the corresponding NPCA primary channel and NPCA secondary channel of the NPCA operation to be initiated by the station are located in the corresponding channels of the adjacent channels of the OBSS PPDU, and the adjacent channel transmission requirement and policy information and / or adjacent channel transmission restriction information indicates that transmission is allowed to be initiated or performed on the primary channel but not allowed to be initiated or performed on the corresponding secondary channel (or the transmission on the corresponding secondary channel is punctured), the station can initiate transmission on the NPCA primary channel but not initiate or perform transmission on the corresponding secondary channel (or the transmission on the corresponding secondary channel is punctured) during the current OBSS PPDU transmission, including that the station switches to the NPCA primary channel to contend for a TXOP and initiate transmission during the current OBSS PPDU transmission, but does not contend for a TXOP or initiate transmission on the corresponding secondary channel, or the transmission on the corresponding secondary channel is punctured.

[0321] 4. When the corresponding NPCA primary channel and / or NPCA secondary channel of the NPCA operation to be initiated by the station is located in the adjacent channel of the OBSS PPDU, and the adjacent channel transmission requirement and policy information and / or adjacent channel transmission restriction information indicates that, during the current PPDU transmission, only PPDU transmission bandwidth-based adjacent channel transmission is allowed to be performed before the end of the current PPDU, then: when the station switches to the NPCA primary channel and / or NPCA secondary channel and contends for a TXOP or initiates transmission during the current PPDU transmission, the TXOP or frame exchange sequence initiated by the station on the NPCA primary channel and / or NPCA secondary channel should be terminated before the end of the current PPDU.

[0322] In the following, the transmission of the ACT information and AACT information is described by taking the case that the ACT information and AACT information are located in the preamble of the PPDU.

[0323] The NPCA field can be defined in the preamble of the PPDU to carry the transmission restriction information for all or part of the channels in the adjacent channel and / or alternative adjacent channel for the NPCA operation, i.e. the transmission restriction information for initiating transmission in all or part of the channels in the adjacent channel and / or alternative adjacent channel based on the transmission bandwidth of the current PPDU for the NPCA operation. For example, the NPCA field can be defined in the UHR SIG, and the NPCA field can adopt one of the following two forms:

[0324] 1) One NPCA field and an optional received signal strength threshold field are defined for the transmission restriction of the entire adjacent channel, as shown in Table 1.

[0325] 2) Four NPCA fields and an optional received signal strength threshold field are defined for the transmission restriction of part of the channels in the entire adjacent channel, respectively, as shown in Table 2.

[0326] Table 1: Example of NPCA field in the preamble of the PPDU

[0327] Table 1, NPCA field in PPDU preamble example

[0328] Table 3: NPCA field encoding example

[0329] NPCA parameter set element definition

[0330] The NPCA parameter set element provides information required by a station when performing a NPCA operation. In an example, the format of the NPCA parameter set element is shown in FIG. 7. An AP can provide information required by a station associated with the AP when performing a NPCA operation by carrying the NPCA parameter set element in a management frame such as a beacon frame or an association response frame.

[0331] As shown in FIG. 7, the NPCA parameter set element includes the following fields: 1 byte of element ID, 1 byte of length, 1 byte of element ID extension, 4 bytes of NPCA control, 0 or 1 byte of NPCA PD Min Offset, 0 or 1 byte of NPCA PD Max Offset, 0 or 1 byte of NPCA ACT PD Max Offset, 0 or 1 byte of ACT channel bitmap, 0 or 8 bytes of NPCA BSS Color Bitmap, 0 or 8 bytes of NPCA Partial BSSID Bitmap, and 0 or 2 bytes of disallowed subchannel bitmap. The element ID field and the element ID extension field are used to identify the NPCA parameter set element. The length field is used to indicate the length of the NPCA parameter set element.

[0332] The format of the NPCA control field is shown in FIG. 8, including the following subfields:

[0333] 1 bit of NPCA Disallowed, 4 bits of NPCA primary channel, 16 bits of NPCA operation channel bitmap, 1 bit of ACT Disallowed, 1 bit of AACT Disallowed, 1 bit of whether there is NPCA BSS information, 1 bit of PPDU SIG NPCA Allowed, 1 bit of OBSS PPDU SIG NPCA Forced, 1 bit of ACT channel bitmap present, and 1 bit of disallowed subchannel bitmap present.

[0334] The NPCA Allowed field indicates whether NPCA operation is allowed for non-AP STAs associated with the AP sending this NPCA parameter element. When the NPCA Allowed subfield is 1, NPCA operation or NPCA based transmission is not allowed. When the NPCA Allowed subfield is 0, NPCA operation or NPCA based transmission is allowed.

[0335] The NPCA Primary Channel field indicates which channel within the bandwidth occupied by the BSS is the NPCA primary channel, and its encoding value can be taken as the subchannel number corresponding to the NPCA primary channel, wherein the encoding value of the 20mhz subchannel with the lowest frequency in the channel set within the bandwidth occupied by the BSS is 0, and each incremental value corresponds to the 20mhz subchannel with the next higher frequency.

[0336] The NPCA Operating Channel bitmap field indicates which channels within the bandwidth occupied by the BSS are the NPCA operating channels, and the lowest numbered bit corresponds to the 20mhz subchannel with the lowest frequency in the entire set of 20mhz subchannels within the bandwidth of the BSS, and each consecutive bit in the bitmap corresponds to the 20mhz subchannel with the next higher frequency. A bit in the bitmap set to 1 indicates that the 20MHz channel corresponding to the bit position is an NPCA operating channel, and a bit in the bitmap set to 0 indicates that the 20MHz channel corresponding to the bit position is not an NPCA operating channel.

[0337] The Not Allowed ACT field indicates whether all or part of the channels in the adjacent channels of the OBSS PPDU transmission bandwidth are allowed to be initiated (or conducted) by the non-AP STAs associated with the AP sending this element under given conditions (if any). When the Not Allowed ACT subfield is 1, it indicates that all or part of the channels in the adjacent channels of the OBSS PPDU transmission bandwidth are not allowed to be initiated (or conducted) under the given conditions. When the Not Allowed ACT subfield is 0, it indicates that there is no adjacent channel transmission restriction for the OBSS PPDU transmission bandwidth. Wherein, the given conditions satisfy one or more of the following:

[0338] 1) The received signal strength level of the OBSS PPDU that is intended to trigger the NPCA operation is greater than the NPCA ACT PD threshold value indicated by the NPCA ACT PD Max Offset field (if any);

[0339] 2) The OBSS PPDU that is intended to trigger the NPCA operation is sent from a station in the BSS indicated by the NPCA BSS Color Bitmap field and / or the NPCA Partial BSSID Bitmap field (if any);

[0340] 3) One or more subchannels in the adjacent channel correspond to the subchannels indicated as "not allowed to initiate (or conduct) transmission" in the "not allowed subchannel bitmap" field, i.e., the value of the bit in the "not allowed subchannel bitmap" corresponding to the one or more subchannels in the adjacent channel is set to 1.

[0341] 4) When the OBSS PPDU SIG NPCA force field is indicated as 1, the OBSS PPDU triggering the NPCA operation carries the NPCA field indicating one of the following: ACT_DISALLOW_FOR_PPDU_LEVEL, ACT_AND_AACT_DISALLOW_FOR PPDU_LEVEL, ACT_DELAYED, ACT_AND_AACT_DELAYED.

[0342] 5) The presence of the corresponding channel in the adjacent channel indicated as "not allowed transmission" in the ACT channel bitmap field (if any).

[0343] Not allowed AACT indicates whether all or part of the channels in the alternative adjacent channel of the OBSS PPDU transmission bandwidth are allowed to initiate (or conduct) transmission by the non-AP STA associated with the AP sending this element under given conditions (if any). When the not allowed AACT subfield is 1, it indicates that all or part of the channels in the alternative adjacent channel of the OBSS PPDU transmission bandwidth are not allowed to initiate (or conduct) transmission under the given conditions.

[0344] Presence or absence of NPCA BSS information for indicating whether the NPCA BSS color bitmap and / or the NPCA preferred BSSID bitmap are carried in the NPCA parameter set element.

[0345] The PPDU SIG NPCA Allowed subfield indicates whether non-AP stations associated with the AP that transmitted this element can set the TXVECTOR parameter NPCA to ACT_DISALLOW_FOR_PPDU_LEVEL, ACT__AND_AACT_DISALLOW_FOR_PPDU_LEVEL, or ACT_AND_AACT_DISALLOW_FOR_TXOP_LEVEL. Wherein, the PPDU SIG NPCA Allowed subfield value is 1, indicating that non-AP stations associated with the AP that transmitted this element can set the TXVECTOR parameter NPCA to ACT_DISALLOW_FOR_PPDU_LEVEL, ACT__AND_AACT_DISALLOW_FOR_PPDU_LEVEL, or ACT_AND_AACT_DISALLOW_FOR_TXOP_LEVEL; otherwise, the PPDU SIG NPCA Allowed subfield value is 0.

[0346] The OBSS PPDU SIG NPCA Force subfield indicates whether the non-AP STA associated with the AP that transmitted this element is forced to follow the transmission restriction information of all or part of the channels in the adjacent channel and / or alternative adjacent channel indicated by the NPCA field of the OBSS PPDU when performing NPCA operation. When the OBSS PPDU SIG NPCA Force subfield is 1, the transmission restriction requirement indicated by the NPCA field of the OBSS PPDU is forced to be followed; when the OBSS PPDU SIG NPCA Force subfield is 0, the transmission restriction requirement indicated by the NPCA field is taken as reference information when implementing.

[0347] The ACT Channel Bitmap Present subfield indicates whether the ACT Channel Bitmap subfield is present in the NPCA Parameter Set element. When the ACT Channel Bitmap Present subfield value is 1, it indicates that the ACT Channel Bitmap subfield is present in the NPCA Parameter Set element; when the ACT Channel Bitmap Present subfield value is 0, it indicates that the ACT Channel Bitmap subfield is not present in the NPCA Parameter Set element.

[0348] The Not Allowed Subchannel Bitmap Present subfield indicates whether the Not Allowed Subchannel Bitmap subfield is present in the NPCA Parameter Set element. When the Not Allowed Subchannel Bitmap Present subfield value is 1, it indicates that the Not Allowed Subchannel Bitmap subfield is present in the NPCA Parameter Set element; when the Not Allowed Subchannel Bitmap Present subfield value is 0, it indicates that the Not Allowed Subchannel Bitmap subfield is not present in the NPCA Parameter Set element.

[0349] The NPCA PD Min Offset field contains an unsigned integer that is added to -82 dBm to generate the value of the NPCA PD Min parameter.

[0350] The NPCA PD Max Offset field contains an unsigned integer that is added to -82 dBm to generate the value of the NPCA PD Max Offset parameter.

[0351] The NPCA ACT PD Max Offset field contains an unsigned integer that is added to -82 dBm to generate the value of the NPCA ACT PD Max parameter, which is the maximum PD value for adjacent channel transmissions by the NPCA operation. When the station receives an OBSS PPDU with a received signal strength level, or RSSI level, that is greater than the indicated NPCA ACT PD Max value, there is an adjacent channel transmission restriction of the OBSS PPDU transmission bandwidth, see the definition of the Not Allowed ACT field.

[0352] The ACT channel bitmap field indicates the restriction requirement of the corresponding channel transmission of the adjacent channel and / or the alternative adjacent channel based on the OBSS PPDU transmission bandwidth when the non-AP STA associated with the AP sending this element performs NPCA operation. Each bit of the bitmap corresponds to the corresponding channel of the adjacent channel and the alternative adjacent channel based on the OBSS PPDU transmission bandwidth. Among them, the first 4 bits of the bitmap correspond to the corresponding channel in the adjacent channel. If the adjacent channel bandwidth is 20mhz, 40mhz or 80mhz, the lowest bit corresponds to the 20MHz sub-band closest to the PPDU bandwidth in the adjacent channel, i.e. the front 20mhz sub-band, and the highest bit corresponds to the 20MHz sub-band farthest from the PPDU bandwidth in the adjacent channel, i.e. the rear 20mhz sub-band; if the adjacent channel bandwidth is 160 / 80+80mhz, the lowest bit corresponds to the 40MHz sub-band closest to the PPDU bandwidth in the 160mhz operating frequency band, i.e. the front 40mhz sub-band, and the highest bit corresponds to the 40MHz sub-band farthest from the PPDU bandwidth in the 160mhz operating frequency band, i.e. the rear 40mhz sub-band. The last 4 bits of the bitmap correspond to the corresponding channel in the alternative adjacent channel. If the alternative adjacent channel bandwidth is 20mhz, 40mhz or 80mhz, the lowest bit corresponds to the 20MHz sub-band closest to the PPDU bandwidth in the alternative adjacent channel, i.e. the front 20mhz sub-band, and the highest bit corresponds to the 20MHz sub-band farthest from the PPDU bandwidth in the alternative adjacent channel, i.e. the rear 20mhz sub-band; if the alternative adjacent channel bandwidth is 160 / 80+80mhz, the lowest bit corresponds to the 40MHz sub-band closest to the PPDU bandwidth in the 160mhz frequency band, i.e. the front 40mhz sub-band, and the highest bit corresponds to the 40MHz sub-band farthest from the PPDU bandwidth in the 160mhz frequency band, i.e. the rear 40mhz sub-band. Among them, if the value of the corresponding bit of the bitmap is 1, it indicates that the transmission of the channel corresponding to the bit position in the adjacent channel or the alternative adjacent channel is allowed; if the value of the corresponding bit of the bitmap is 0, it indicates that the transmission of the channel corresponding to the bit position in the adjacent channel or the alternative adjacent channel is not allowed. If the channel corresponding to the corresponding bit in the bitmap in the adjacent channel or the alternative adjacent channel does not exist, the bit is reserved.

[0353] The NPCA BSS Color Bitmap (NPCA BSS Color Bitmap) field is a bitmap that indicates the BSS color values used by members of the NPCA group to which the sending STA belongs. Each bit of the bitmap corresponds to one of the 64 BSS colors, with the lowest numbered bit corresponding to BSS color value 0 and the highest numbered bit corresponding to BSS color value 63. If the corresponding bit of the bitmap is 1, then at least one BSS uses the BSS color value, and the BSS is a member of the same NPCA as the sending STA. If a bit of the bitmap is 0, then no BSS in the same NPCA group as the sending STA uses the corresponding BSS color value. The bit of the bitmap that corresponds to BSS color value 0 is reserved.

[0354] The NPCA Partial BSSID Bitmap (NPCA Partial BSSID Bitmap) field is a bitmap that indicates the Partial BSSID values used by members of the NPCA group to which the sending STA belongs. Each bit of the bitmap corresponds to one of the 64 possible BSSID values, with the lowest numbered bit corresponding to Partial BSSID value 0 and the highest numbered bit corresponding to Partial BSSID value 63. If the corresponding bit of the bitmap is 1, then at least one BSSID value is used by a BSS that is a member of the same NPCA group as the sending STA. If a bit of the bitmap is 0, then no BSS in the same NPCA group as the sending STA uses the corresponding Partial BSSID value.

[0355] The lowest numbered bit of the Not Allowed Subchannel bitmap field corresponds to the 20 MHz subchannel of lowest frequency in the set of all 20 MHz subchannels within the BSS bandwidth, and each successive bit of the bitmap corresponds to the next higher frequency 20 MHz subchannel. A bit of the bitmap is set to 1 to indicate that the 20 MHz channel corresponding to the bit position is not allowed to initiate (or conduct) transmissions, or that the transmissions of the 20 MHz channel corresponding to the bit position are punctured; a bit of the bitmap is set to 0 to indicate that there is no restriction on the initiation (or conduct) of transmissions on the 20 MHz channel corresponding to the bit position.

[0356] The wireless communication method provided by the embodiments of the present application includes but is not limited to the following embodiments one to four.

[0357] Embodiment one

[0358] As shown in FIG. 9, in one BSS (set as BSS1) whose operating bandwidth is 80MHz, the AP of BSS1 supports NPCA operation, wherein the NPCA primary channel is located in the third 20MHz subchannel, and the NPCA secondary channel can include the first and second 20MHz subchannels. Moreover, there is another BSS (set as BSS2) which is an OBSS of BSS1 and also uses the same primary channel as BSS1.

[0359] The AP of BSS1 supporting NPCA operation can carry the NPCA parameter set element in the beacon frame it sends, indicating to carry the adjacent channel (and / or alternative adjacent channel) transmission requirement and policy information, in particular, the NPCA Disallowed subfield indicates 0, indicating that NPCA operation is allowed. The NPCA adjacent channel transmission maximum PD value offset (NPCA ACT PD Max Offset) field is 6, indicating that the value of the NPCA adjacent channel transmission maximum PD (NPCA ACT PD Max) parameter is ((-82+6)=-76dBm), and also means that when the station of BSS1 receives the received signal strength level or RSSI level of the OBSS PPDU is greater than the indicated NPCA adjacent channel transmission maximum PD value (-76dBm), there is adjacent channel transmission restriction of the OBSS PPDU transmission bandwidth. At the same time, the OBSS PPDU SIG NPCA mandatory subfield indicates 1, indicating that when the station receives the received signal strength level or RSSI level of the OBSS PPDU is greater than the indicated NPCA adjacent channel transmission maximum PD value, it is mandatory to follow the transmission restriction requirement indicated by the NPCA field of the OBSS PPDU.

[0360] Suppose the AP2 of BSS2 competes for TXOP, and the channel it competes for covers the primary channel of BSS1, the AP2 of BSS2 sends ICF to the STA2 of BSS2 associated with the AP2 on the primary channel, the STA2 of BSS2 sends an IR frame to the AP2 of BSS2 as a response to the ICF after receiving the ICF, the AP2 of BSS2 sends a PPDU (the transmission bandwidth is 20MHz, and the corresponding adjacent channel is the first subchannel of BSS1) to the STA2 of BSS2 after receiving the IR, and indicates "ACT_DISALLOW_FOR_PPDU_LEVEL" in the NPCA field of the preamble of its PPDU, indicating that during the current PPDU transmission, if the received signal strength level of the OBSS station receiving the current PPDU is greater than a certain PD threshold, the transmission of the corresponding channel in the adjacent channel based on the current PPDU transmission bandwidth is not allowed (or not recommended).

[0361] After the AP or STA of BSS1 detects the OBSS PPDU and according to the adjacent channel (and / or alternative adjacent channel) transmission restriction information carried by the OBSS PPDU, the AP or STA of BSS1 can initiate transmission on the NPCA primary channel and the 2nd channel of BSS1 but not initiate or conduct transmission on the 2nd channel of BSS1 during the current OBSS PPDU transmission, including that the STA switches to the NPCA primary channel and the 2nd channel of BSS1 to contend for TXOP and initiate transmission during the current OBSS PPDU transmission, but does not contend for TXOP or initiate transmission on the 1st channel of BSS1.

[0362] As shown in FIG. 9, after the AP1 of BSS1 switches to the NPCA primary channel or the NPCA operating channel, it contends for TXOP on the NPCA primary channel (i.e. the 3rd channel of BSS1) and the secondary channel (i.e. the 2nd channel of BSS1), and then exchanges frames with the STAs associated therewith on the NPCA primary channel and the 2nd channel of BSS1, wherein the AP of BSS1 sends ICF to the STAs of BSS1, and the STAs of BSS1 send IR frames to the AP of BSS1 as the response of the ICF after receiving the ICF. After receiving the IR frames, the AP of BSS1 sends data PPDU on the NPCA primary channel and the 2nd channel.

[0363] Embodiment Two

[0364] As shown in FIG. 10, in one BSS (supposed to be BSS1), the operating bandwidth thereof is 120MHz, and the AP and the STAs of the BSS support NPCA operation, wherein the NPCA primary channel is located at the 5th 20MHz channel, and the NPCA secondary channel can include the 1st, 2nd, 3rd and 4th 20MHz channels. Moreover, there is another BSS (supposed to be BSS2) which is the OBSS of the BSS (i.e. BSS1).

[0365] In which, the AP supporting NPCA operation can carry NPCA parameter set element in the beacon frame it sends, indicating carrying adjacent channel (and / or alternative adjacent channel) transmission requirement and policy information, in particular, NPCA Disallowed subfield indicates 0, indicating allowing NPCA operation. NPCA adjacent channel transmission maximum PD value offset (NPCA ACT PD Max Offset) field is 6, indicating that the value of NPCA adjacent channel transmission maximum PD (NPCA ACT PD Max) parameter is ((-82+6)=-76dBm), at the same time, also means that when the received signal strength level or RSSI level of the OBSS PPDU received by the station of BSS2 is greater than the indicated NPCA adjacent channel transmission maximum PD value (-76dBm), there is adjacent channel transmission restriction of OBSS PPDU transmission bandwidth. In the ACT channel bitmap, the value of the bit corresponding to the bit position of the 20MHz subband closest to the PPDU bandwidth in the adjacent channel is 0, that is, indicating that the transmission of the 20MHz subband closest to the PPDU bandwidth in the adjacent channel is not allowed, and the values of the corresponding bits in other positions of the bitmap are 1, indicating that the transmission of other channels in the adjacent channel is allowed. The NPCA BSS color bitmap field and / or NPCA Partial BSSID bitmap field indicate that BSS2 is a BSS of the same NPCA group member as the sending STA, that is, the received OBSS PPDU comes from BSS2.

[0366] Assuming that AP2 of BSS2 competes for TXOP and the channel competed by AP2 covers the primary channel of BSS1, AP2 sends ICF to STA2 associated with AP2 in BSS2, and then STA2 sends IR frame to AP2 as the response of ICF, and AP2 sends PPDU (transmission bandwidth is 20MHz, the corresponding adjacent channel is the first 20MHz subchannel of BSS1, and the alternative adjacent channel is the second 20MHz subchannel of BSS1) to STA2 after receiving the IR. At the same time, the preamble of the PPDU indicates that the color of the PPDU is the color value corresponding to BSS2, or the information carried by the PPDU indicates that the identification of the BSS to which the station sending the PPDU belongs is the BSSID of BSS2.

[0367] The AP or STA of BSS1 receives or detects the ICF / IR control frame exchange of BSS2, receives or detects the OBSS PPDU after the ICF / IR control frame exchange, detects that the received signal strength level is greater than -76 dBm, and the length or duration information carried by the PPDU meets the duration condition for triggering the NPCA operation, and according to the adjacent channel transmission requirement and strategy information (i.e. indicating: receiving the OBSS PPDU from BSS2, if the received signal strength level is greater than -76 dBm, the transmission in the 20MHz sub-band closest to the transmission bandwidth of the OBSS PPDU is not allowed) published by the AP1, the AP or station can initiate transmission on the NPCA primary channel and the secondary channel (i.e. the 2nd, 3rd and 4th channels of BSS1) during the current OBSS PPDU transmission, but not on the 1st channel of BSS1, including that the station switches to the NPCA primary channel and the 2nd, 3rd and 4th channels of BSS1 to compete for TXOP and initiate transmission during the current OBSS PPDU transmission, but does not compete for TXOP or initiate transmission on the 1st channel of BSS1, or punctures the transmission on the 1st channel of BSS1.

[0368] As shown in FIG. 10, after the AP of BSS1 switches to the NPCA primary channel or the NPCA operation channel, it competes for TXOP on the NPCA primary channel (i.e. the 5th channel of BSS1) and the secondary channel (i.e. the 2nd, 3rd and 4th channels of BSS1), and then exchanges frames with the STAs associated therewith, which also support the NPCA operation. Among them, the AP of BSS1 first sends an ICF to the STAs of BSS1, and the STAs of BSS1 send an IR frame to the AP of BSS1 as a response to the ICF after receiving the ICF. After receiving the IR frame, the AP of BSS1 sends a data PPDU on the NPCA primary channel and the 2nd, 3rd and 4th channels.

[0369] Embodiment Three

[0370] As shown in FIG. 11, in one BSS (referred to as BSS1), the operating bandwidth is 120MHz, and the AP and the stations of the BSS support the NPCA operation, wherein the NPCA primary channel is located in the 5th 20MHz sub-channel, and the NPCA secondary channel can include the 1st, 2nd, 3rd and 4th 20MHz sub-channels. Moreover, there are two other BSSs (referred to as BSS2 and BSS3), which are OBSSs of the BSS.

[0371] In the above example, the AP supporting NPCA operation can carry the NPCA parameter set element in the beacon frame it transmits, indicating that the adjacent channel (and / or alternative adjacent channel) transmission requirement and policy information is carried, in particular, the NPCA Disallowed subfield is indicated as 0, indicating that the NPCA operation is allowed. The BSS3 is indicated as a same NPCA group member of the transmitting STA in the NPCA BSS Color Bitmap field and / or NPCA Partial BSSID Bitmap field, i.e., the received OBSS PPDU is from the BSS3; at the same time, for the BSS3 (i.e., the OBSS PPDU from the BSS3), the "Disallowed Subchannel Bitmap" subfield indicates that the transmission is not allowed to be initiated (or conducted) on the 1st, 2nd and 3rd 20MHz channels of the BSS1. For the OBSS PPDU from other OBSS (BSS2), the NPCA operation has no adjacent channel transmission restriction.

[0372] Assuming that the AP of the BSS2 contends for the TXOP, and the contended channel covers the primary channel and the first secondary channel of the BSS1, the AP of the BSS2 transmits the PPDU (the transmission bandwidth is 40MHz, and the corresponding adjacent channel is the 2nd and 3rd 20MHz secondary channels of the BSS1) to the STA associated with it in the BSS2, and at the same time, the color of the preamble of the PPDU is indicated as the color value corresponding to the BSS2, or the information carried by the PPDU indicates that the BSSID of the BSS to which the station transmitting the PPDU belongs is the BSSID of the BSS2. After the AP or the STA of the BSS1 detects or receives the OBSS PPDU, if the length or duration information carried by the PPDU (i.e., the OBSS PPDU1) satisfies the duration condition for triggering the NPCA operation, and at the same time, for the OBSS PPDU from the BSS2, the NPCA operation has no adjacent channel transmission restriction, the AP of the BSS1 can directly contend for the TXOP on the NPCA operation channel (i.e., the 2nd, 3rd, 4th and 5th secondary channels of the BSS1), and return to the primary channel and the responding operation channel of the BSS1 after the frame exchange ends.

[0373] As shown in FIG. 11, after the AP of the BSS1 switches to the NPCA primary channel and the NPCA secondary channel, the AP of the BSS1 contends for the TXOP on the NPCA primary channel (the 5th secondary channel of the BSS1) and the NPCA secondary channel (the 2nd, 3rd and 4th secondary channels of the BSS1), and the AP and the STA of the BSS1 perform frame exchange on the NPCA primary channel and the NPCA secondary channel (i.e., the 2nd, 3rd, 4th and 5th secondary channels of the BSS1), wherein the AP of the BSS1 transmits the ICF to the STA of the BSS1, the STA of the BSS1 receives the ICF and transmits the IR frame to the AP of the BSS1 as a response, and the AP of the BSS1 transmits the PPDU to the STA of the BSS2 after receiving the IR.

[0374] When the AP or STA of BSS1 receives the OBSS PPDU from BSS3, detects that the received signal strength level is greater than -76dBm, and the length or duration information carried by the PPDU meets the duration condition for triggering the NPCA operation, switches to the NPCA primary channel, and according to the adjacent channel transmission requirement and strategy information (i.e. indication: received the OBSS PPDU from BSS3, if the received signal strength level is greater than -76dBm, then according to the "no subchannel bitmap" subfield indication, no transmission is allowed to be initiated (or conducted) on the 1st, 2nd and 3rd 20MHz channels of BSS1), the AP or station can initiate transmission on the NPCA primary channel and the 4th and 5th channels of BSS1 during the transmission of the current OBSS PPDU (OBSS PPDU2), but not on the 2nd and 3rd channels of BSS1, including that the station switches to the NPCA primary channel and the 4th channel of BSS1 to compete for TXOP and initiate transmission during the transmission of OBSS PPDU2, but does not compete for TXOP or initiate transmission on the 2nd and 3rd channels of BSS1, or punctures the transmission on the 2nd and 3rd channels of BSS1.

[0375] As shown in FIG. 11, after the AP of BSS1 switches to the NPCA primary channel and the NPCA operation channel, it competes for TXOP on the NPCA primary channel (the 6th channel of BSS1) and the NPCA auxiliary channel (i.e. the 4th channel), and conducts frame exchange on the NPCA primary channel and the 4th channel of BSS1, wherein the AP of BSS1 sends ICF to the STA of BSS1, the STA of BSS1 receives the ICF and sends an IR frame to the AP of BSS1, and the AP of BSS1 sends a PPDU to the STA of BSS2 after receiving the IR.

[0376] The preferred embodiments of the present application are described in detail in combination with the drawings, but the present application is not limited to the specific details in the above-described embodiments. Within the technical concept scope of the present application, various simple modifications can be made to the technical solutions of the present application, and these simple modifications all belong to the protection scope of the present application. For example, in the above-described specific embodiments, various specific technical features described can be combined in any appropriate manner without contradiction. In order to avoid unnecessary repetition, various possible combination manners are not described again in the present application. For another example, various different embodiments of the present application can also be combined in any manner, as long as it does not deviate from the idea of the present application, and it should also be considered as the disclosed content of the present application. For another example, under the premise of no conflict, each embodiment described in the present application and / or the technical features in each embodiment can be combined with any prior art, and the technical solutions obtained after the combination should also fall within the protection scope of the present application.

[0377] It should also be understood that the size of the sequence number of each process described above does not mean the order of execution in various method embodiments of the present application, and the execution order of each process should be determined according to its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application. In addition, in the embodiments of the present application, the terms "downlink", "uplink" and "sidelink" are used to represent the transmission direction of signals or data, wherein "downlink" is used to represent the transmission direction of signals or data as the first direction from the station to the user equipment of the cell, "uplink" is used to represent the transmission direction of signals or data as the second direction from the user equipment of the cell to the station, and "sidelink" is used to represent the transmission direction of signals or data as the third direction from user equipment 1 to user equipment 2. For example, "downlink signal" represents the transmission direction of the signal as the first direction. In addition, in the embodiments of the present application, the term "and / or" is only a description of the association relationship between the associated objects, which means that there can be three relationships. Specifically, A and / or B can represent three cases of A alone, A and B together, and B alone. In addition, the character " / " in this paper generally represents that the front and rear associated objects are in an "or" relationship.

[0378] FIG. 12 is a schematic diagram of the structure of the first STA according to an embodiment of the present application. As shown in FIG. 12, the first STA 1200 includes:

[0379] The control unit 1201 is configured to control the non-primary channel access (NPCA) operation of the first STA based on the first information and / or the second information.

[0380] The first information is the NPCA operation parameter information of the first basic service set (BSS) configuration, and the first BSS is the BSS in which the first STA is located.

[0381] The second information is the transmission restriction information of the adjacent channel and / or the alternative adjacent channel indicated by the second STA of the second BSS.

[0382] The second BSS is an overlapping basic service set (OBSS) of the first BSS.

[0383] In some embodiments, the control unit 1201 is configured to control the NPCA operation of the first STA based on the first information and / or the second information in the case of listening to the OBSS PPDU.

[0384] In some embodiments, the control unit 1201 is further configured to, in a case that the NPCA operating channel of the first BSS comprises all or part of sub-channels in the OBSS PPDU transmission bandwidth based adjacent channel and / or alternative adjacent channel, determine whether to initiate transmission or make transmission on all or part of sub-channels in the OBSS PPDU transmission bandwidth based adjacent channel and / or alternative adjacent channel based on the first channel control information included in the first information.

[0385] The first channel control information is used to indicate transmission requirements on all or part of sub-channels in the OBSS PPDU transmission bandwidth based adjacent channel and / or alternative adjacent channel in the NPCA operation of the first BSS.

[0386] In some embodiments, the first channel control information comprises:

[0387] A first bitmap, the first bitmap is used to indicate whether to allow transmission of sub-channels at corresponding positions in the OBSS PPDU transmission bandwidth based adjacent channel and / or alternative adjacent channel.

[0388] In some embodiments, the control unit 1201 is further configured to, in a case that the first STA satisfies a first condition, determine whether to initiate transmission or make transmission on all or part of sub-channels in the OBSS PPDU transmission bandwidth based adjacent channel and / or alternative adjacent channel based on the first channel control information.

[0389] In some embodiments, the first condition comprises one or more of:

[0390] The second STA detects or receives a received signal strength level value of the OBSS PPDU greater than a first packet detection (PD) threshold value;

[0391] The second BSS is a BSS of the same NPCA group as the first BSS; the first STA is not forced to indicate to follow the second information; and a power at which the first STA operates the NPCA operation belongs to a first power range.

[0392] In some embodiments, the first information further comprises first condition information used to determine whether the first STA satisfies the first condition, and the first condition information comprises one or more of:

[0393] A first PD value, the first PD value is used to indicate the first PD threshold value;

[0394] A second bitmap, the second bitmap is used to indicate, by a color value, a BSS of a plurality of BSSs that is in the same NPCA group as the first BSS;

[0395] a third bitmap, the third bitmap being used to indicate, among a plurality of BSSs, a BSS that is in a same NPCA group as the first BSS by a partial BSSID;

[0396] first power indication information, the first power indication information being used to indicate the first power range;

[0397] first indication information, the first indication information being used to indicate whether to follow the second information compulsorily.

[0398] In some embodiments, the second information is carried in the OBSS PPDU, or the second information is carried in a preamble of the OBSS PPDU, or the second information is carried in a second frame carried by the OBSS PPDU.

[0399] In some embodiments, the control unit 1201 is further configured to, in a case that the NPCA operating channel of the first BSS comprises all or partial sub-channels of the adjacent channel and / or the alternative adjacent channel based on the OBSS PPDU transmission bandwidth, determine whether the first STA initiates transmission or performs transmission on all or partial sub-channels of the adjacent channel and / or the alternative adjacent channel based on the second information comprising second channel control information; the second channel control information is used to indicate transmission restriction of all or partial sub-channels of the adjacent channel and / or the alternative adjacent channel based on the OBSS PPDU transmission bandwidth.

[0400] In some embodiments, the second channel control information comprises: first transmission indication information, the first transmission indication information being used to indicate a transmission restriction manner of the adjacent channel based on the OBSS PPDU transmission bandwidth.

[0401] In some embodiments, the second channel control information comprises: a plurality of second transmission indication information, the second transmission indication information being used to indicate a transmission restriction manner of a corresponding channel among the adjacent channel based on the OBSS PPDU transmission bandwidth.

[0402] In some embodiments, the transmission restriction manner is one of one or more PPDU-based transmission restriction manners, or one of one or more TXOP-based transmission restriction manners.

[0403] In some embodiments, the one or more PPDU-based transmission restriction manners comprise one or more of the following:

[0404] a first transmission manner, the first transmission manner being that, during OBSS PPDU transmission, transmission of a corresponding sub-channel among the adjacent channel based on the OBSS PPDU transmission bandwidth is allowed and unrestricted;

[0405] a second transmission manner, in which transmission of a corresponding subchannel in an adjacent channel based on the OBSS PPDU transmission bandwidth is not allowed during the OBSS PPDU transmission;

[0406] a third transmission manner, in which transmission of a corresponding subchannel in an adjacent channel and an alternative adjacent channel based on the OBSS PPDU transmission bandwidth is not allowed during the OBSS PPDU transmission;

[0407] a fourth transmission manner, in which transmission of a corresponding subchannel in an adjacent channel based on the OBSS PPDU transmission bandwidth before the end of the OBSS PPDU is allowed during the OBSS PPDU transmission;

[0408] a fifth transmission manner, in which transmission of a corresponding subchannel in an adjacent channel based on the OBSS PPDU transmission bandwidth is delayed during the OBSS PPDU transmission;

[0409] a sixth transmission manner, in which transmission of a corresponding subchannel in an adjacent channel and an alternative adjacent channel based on the OBSS PPDU transmission bandwidth is delayed during the OBSS PPDU transmission.

[0410] In some embodiments, the one or more TXOP-based transmission restriction manners include one or more of the following:

[0411] a seventh transmission manner, in which transmission of a corresponding subchannel in an adjacent channel based on the OBSS PPDU transmission bandwidth is allowed and not restricted during a TXOP in which the OBSS PPDU is located;

[0412] an eighth transmission manner, in which transmission of a corresponding subchannel in an adjacent channel based on the OBSS PPDU transmission bandwidth is not allowed during a TXOP in which the OBSS PPDU is located;

[0413] a ninth transmission manner, in which transmission of a corresponding subchannel in an adjacent channel and an alternative adjacent channel based on the OBSS PPDU transmission bandwidth is not allowed during a TXOP in which the OBSS PPDU is located.

[0414] In some embodiments, the control unit 1201 is further configured to, in a case where it is determined that the first STA satisfies a second condition, determine whether to perform transmission on all or part of subchannels in an adjacent channel and / or an alternative adjacent channel based on the second channel control information based on the OBSS PPDU transmission bandwidth.

[0415] In some embodiments, the second condition comprises: the first STA detecting or receiving a received signal strength level value of the OBSS PPDU being greater than a second PD threshold.

[0416] In some embodiments, the second information further comprises: second condition information used for determining whether the first STA satisfies the second condition; the second condition information comprises: a second PD value used for indicating the second PD threshold.

[0417] In some embodiments, the first information further comprises: NPCA control information used for indicating control parameters related to the NPCA operation.

[0418] In some embodiments, the NPCA control information comprises one or more of:

[0419] second indication information used for indicating whether the STA of the first BSS is allowed to perform the NPCA operation;

[0420] third indication information used for indicating an NPCA primary channel;

[0421] fourth indication information used for indicating an NPCA operation channel;

[0422] fifth indication information used for indicating whether the STA of the first BSS is allowed to perform transmission through all or part of sub-channels in an adjacent channel based on an OBSS PPDU transmission bandwidth;

[0423] a fourth bitmap used for indicating whether transmission of a sub-channel at a corresponding position in the sub-channels included in the first BSS bandwidth is not allowed.

[0424] In some embodiments, the fifth indication information is used for indicating whether the STA of the first BSS is allowed to perform transmission through all or part of sub-channels in an adjacent channel based on an OBSS PPDU transmission bandwidth in a case where a first condition or a second condition is satisfied.

[0425] In some embodiments, the NPCA control information further comprises: sixth indication information used for indicating a transmission restriction manner of the NPCA operation triggered based on a PPDU transmitted by the first STA.

[0426] In some embodiments, the control unit 1201 is further configured to comprise one or more of:

[0427] determine whether to switch from a primary channel of the first BSS to a NPCA primary channel based on the first information and / or the second information;

[0428] determine whether to initiate a NPCA operation based on the first information and / or the second information;

[0429] determine a NPCA operation parameter in case of initiating a NPCA operation based on the first information and / or the second information.

[0430] In some embodiments, the NPCA operation parameter comprises one or more of:

[0431] a first parameter for indicating a channel for performing a NPCA based transmission;

[0432] a second parameter for indicating a bandwidth of a NPCA operation channel;

[0433] a third parameter for indicating a duration of a transmission opportunity or a frame exchange sequence of a NPCA.

[0434] In some embodiments, the control unit is further configured to switch to a NPCA primary channel and / or a NPCA secondary channel.

[0435] In some embodiments, the condition for triggering the switch to the NPCA primary channel and / or the NPCA secondary channel comprises:

[0436] detecting an OBSS control frame, and / or a duration of a TXOP indicated by the OBSS control frame is greater than or equal to a first duration threshold; or

[0437] detecting an OBSS PPDU, and / or a duration of the OBSS PPDU or a duration of a TXOP indicated by the OBSS PPDU is greater than or equal to a second duration threshold.

[0438] In some embodiments, the first STA is a first non-access point station (Non-AP STA) or a first access point (AP), and the first Non-AP STA is associated with the first AP.

[0439] In some embodiments, in case that the first STA is the first Non-AP STA, the first STA 1200 further comprises a communication unit configured to receive a first frame sent by the first AP, the first frame carrying the first information.

[0440] In some embodiments, the first frame is a management frame.

[0441] Those skilled in the art should understand that the above description of the wireless communication device of the embodiments of the present application can be understood with reference to the description of the wireless communication method of the embodiments of the present application.

[0442] FIG. 13 is a schematic structural diagram of a communication device 1300 provided by the embodiments of the present application. The communication device can be a first STA. The communication device 1300 shown in FIG. 13 includes a processor 1310, which can call and run a computer program from a memory to implement the method in the embodiments of the present application.

[0443] Optionally, as shown in FIG. 13, the communication device 1300 can further include a memory 1320. The processor 1310 can call and run a computer program from the memory 1320 to implement the method in the embodiments of the present application.

[0444] The memory 1320 can be a separate device independent of the processor 1310, or can be integrated in the processor 1310.

[0445] Optionally, as shown in FIG. 13, the communication device 1300 can further include a transceiver 1330, and the processor 1310 can control the transceiver 1330 to communicate with other devices, specifically, to send information or data to other devices, or receive information or data sent by other devices.

[0446] The transceiver 1330 can include a transmitter and a receiver. The transceiver 1330 can further include an antenna, and the number of antennas can be one or more.

[0447] Optionally, the communication device 1300 can specifically be the first STA of the embodiments of the present application, and the communication device 1300 can implement the corresponding processes implemented by the first STA in the various methods of the embodiments of the present application. For the sake of brevity, details are not described herein.

[0448] FIG. 14 is a schematic structural diagram of a chip according to the embodiments of the present application. The chip 1400 shown in FIG. 14 includes a processor 1410, which can call and run a computer program from a memory to implement the method in the embodiments of the present application.

[0449] Optionally, as shown in FIG. 14, the chip 1400 can further include a memory 1420. The processor 1410 can call and run a computer program from the memory 1420 to implement the method in the embodiments of the present application.

[0450] The memory 1420 can be a separate device independent of the processor 1410, or can be integrated in the processor 1410.

[0451] Optionally, the chip 1400 further includes an input interface 1430. The processor 1410 can control the input interface 1430 to communicate with other devices or chips, and specifically, can acquire information or data sent by other devices or chips.

[0452] Optionally, the chip 1400 further includes an output interface 1440. The processor 1410 can control the output interface 1440 to communicate with other devices or chips, and specifically, can output information or data to other devices or chips.

[0453] Optionally, the chip can be applied to the first STA in the embodiments of the present application, and the chip can implement the corresponding procedures realized by the first STA in each method of the embodiments of the present application. For brevity, details are not described herein.

[0454] It should be understood that the chip mentioned in the embodiments of the present application can also be referred to as a system chip, a system chip, a chip system or a system on chip, etc.

[0455] FIG. 15 is a schematic block diagram of a communication system 1500 provided by the embodiments of the present application. As shown in FIG. 15, the communication system 1500 includes a non-access point device 1510 and an access point device 1520.

[0456] The non-access point device 1510 (Non-AP-STA) or the access point device 1520 (AP) can be used to implement the corresponding functions realized by the first STA in the above method. For brevity, details are not described herein.

[0457] It should be understood that the processor of the embodiments of the present application can be an integrated circuit chip with a processing capability of signals. In the implementation process, each step of the method embodiments described above can be completed by the integrated logic circuit of hardware in the processor or the instructions in the form of software. The processor described above can be a general processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic devices, a discrete gate or transistor logic device, a discrete hardware component. The disclosed methods, steps and logic block diagrams 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 or the like. The steps of the method disclosed in conjunction with the embodiments of the present application can be directly embodied as a hardware code processor for execution, or can be executed by a combination of hardware and software modules in the code processor. The software module can be located in a random memory, a flash memory, a read-only memory, a programmable read-only memory or an electrically erasable programmable memory, a register or other mature storage medium in the art. The storage medium is located in the memory, and the processor reads the information in the memory, and combines the hardware to complete the steps of the above method.

[0458] It is to be understood that the memory in the embodiments of the present application can be a volatile memory or a nonvolatile memory, or can include both volatile and nonvolatile memory. Among them, the nonvolatile memory can be a read-only memory (Read-Only Memory, ROM), a programmable read-only memory (Programmable ROM, PROM), an erasable programmable read-only memory (Erasable PROM, EPROM), an electrically erasable programmable read-only memory (Electrically EPROM, EEPROM) or a flash memory. The volatile memory can be a random access memory (Random Access Memory, RAM) used as an external cache. By way of example, but not limitation, many forms of RAM are available, such as 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 (Synchlink DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM). It should be noted that the memory of the system and method described herein is intended to include, but not limited to, these and any other suitable types of memory.

[0459] It should be understood that the above-mentioned memory is exemplary but not limiting, for example, the memory in the embodiments of the present application can 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) and the like. That is, 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.

[0460] The embodiment of the present application further provides a computer readable storage medium for storing the computer program.

[0461] Optionally, the computer readable storage medium can be applied to the first STA in the embodiment of the present application, and the running of the computer program causes the computer to execute the corresponding process realized by the first STA in the various methods of the embodiment of the present application, which will not be repeated here for the sake of brevity.

[0462] The embodiment of the present application further provides a computer program product comprising computer program instructions.

[0463] Optionally, the computer program product can be applied to the first STA in the embodiment of the present application, and the running of the computer program instructions causes the computer to execute the corresponding process realized by the first STA in the various methods of the embodiment of the present application, which will not be repeated here for the sake of brevity.

[0464] The embodiment of the present application further provides a computer program.

[0465] Optionally, the computer program can be applied to the first STA in the embodiment of the present application, and when the computer program runs on the computer, causes the computer to execute the corresponding process realized by the first STA in the various methods of the embodiment of the present application, which will not be repeated here for the sake of brevity.

[0466] Those skilled in the art can realize that the units and algorithm steps of the examples described in combination with the embodiments disclosed herein can be realized in electronic hardware or in combination of computer software and electronic hardware. Whether the functions are realized in hardware or software mode depends on the specific application and design constraints of the technical solution. The skilled person can use different methods to realize the described functions for each specific application, but such implementation should not be considered beyond the scope of the present application.

[0467] Those skilled in the art can clearly understand that, for the convenience and brevity of the description, the specific working process of the system, device and unit described above can refer to the corresponding process in the foregoing method embodiments, which will not be repeated here.

[0468] In several embodiments provided in the present application, it should be understood that the disclosed system, device and method can be implemented in other manners. For example, the described device embodiments are merely schematic. The division of the units is merely logical function division. There can be other division manners in actual implementation. For example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the displayed or discussed mutual couplings or direct couplings or communication connections can be indirect couplings or communication connections through some interfaces, devices or units, and can be in electrical, mechanical or other forms.

[0469] The units described as separate components can or can not be physically separate, and the components shown as units can or can not be physical units, i.e., can be located in one place, or can be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purposes of the embodiments.

[0470] In addition, each functional unit in the various embodiments of the present application can be integrated in one processing unit, or each unit can be physically present separately, or two or more units can be integrated in one unit.

[0471] If the functions are realized in the form of software function units and sold or used as independent products, they can be stored in a computer readable storage medium. Based on this understanding, the technical solutions of the present application can be embodied in the form of a software product, and the computer software product is stored in a storage medium, and includes a number of instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and various program codes that can be stored in the medium.

[0472] The above is merely specific embodiments of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or replacements within the technical scope disclosed in the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A method of wireless communication, the method comprising: controlling, by a first station (STA), a non-primary channel access (NPCA) operation of the first STA based on first information and / or second information; the first information is an NPCA operation parameter information of a first basic service set (BSS) configuration, the first BSS being a BSS in which the first STA is located; the second information is transmission restriction information of a neighboring channel and / or an alternative neighboring channel indicated by a second STA of a second BSS; the second BSS is an overlapping BSS (OBSS) of the first BSS.

2. The method of claim 1, wherein, controlling, by the first STA, the NPCA operation of the first STA based on the first information and / or the second information comprises: controlling, by the first STA, the NPCA operation of the first STA based on the first information and / or the second information in a case that the first STA overhears an OBSS physical layer protocol data unit (PPDU).

3. The method of claim 1 or 2, wherein, the first information comprises first channel control information, the first channel control information being used to indicate a transmission requirement on all or part of sub-channels in a neighboring channel and / or an alternative neighboring channel based on an OBSS PPDU transmission bandwidth in the NPCA operation of the first BSS; controlling, by the first STA, the NPCA operation of the first STA based on the first information comprises: determining, by the first STA, whether to initiate transmission or perform transmission on all or part of sub-channels in the neighboring channel and / or the alternative neighboring channel based on the first channel control information in a case that the NPCA operation channel of the first BSS comprises all or part of sub-channels in the neighboring channel and / or the alternative neighboring channel based on the OBSS PPDU transmission bandwidth.

4. The method of claim 3, wherein, the first channel control information comprises: a first bitmap, the first bitmap being used to indicate whether to allow transmission of a sub-channel at a corresponding position in the neighboring channel and / or the alternative neighboring channel based on the OBSS PPDU transmission bandwidth.

5. The method of claim 4, wherein, determining, by the first STA, whether to initiate transmission or perform transmission on the neighboring channel and / or the alternative neighboring channel based on the first channel control information comprises: determining, by the first STA, whether to initiate transmission or perform transmission on all or part of sub-channels in the neighboring channel and / or the alternative neighboring channel based on the first channel control information in a case that the first STA satisfies a first condition.

6. The method of claim 5, wherein, the first condition comprises one or more of: a received signal strength level value of the OBSS PPDU detected or received by the second STA is greater than a first packet detection (PD) threshold; the second BSS and the first BSS are BSSs of a same NPCA group; the first STA is not mandatorily indicated to follow the second information; a power at which the first STA performs the NPCA operation belongs to a first power range.

7. The method of claim 6, wherein, the first information further comprises first condition information used to determine whether the first STA satisfies the first condition, the first condition information comprising one or more of: a first PD value, the first PD value being used to indicate the first PD threshold; a second bitmap, the second bitmap being used to indicate, by color values, BSSs in a plurality of BSSs that are in a same NPCA group as the first BSS; a third bitmap, the third bitmap being used to indicate, by partial BSSIDs, BSSs in a plurality of BSSs that are in the same NPCA group as the first BSS; a first power indication information, the first power indication information being used to indicate the first power range; a first indication information, the first indication information being used to indicate whether to follow the second information compulsively.

8. The method according to any one of claims 1 to 7, wherein, the second information is carried in an OBSS PPDU, or the second information is carried in a preamble of the OBSS PPDU, or the second information is carried in a second frame carried by the OBSS PPDU.

9. The method according to any one of claims 1 to 8, wherein, the second information comprises: second channel control information, the second channel control information being used to indicate transmission restrictions of all or part of sub-channels in adjacent channels and / or alternative adjacent channels based on an OBSS PPDU transmission bandwidth; the controlling the NPCA operation of the first STA based on the second information comprises: in a case where the NPCA operation channel of the first BSS comprises all or part of sub-channels in adjacent channels and / or alternative adjacent channels based on an OBSS PPDU transmission bandwidth, determining, based on the second channel control information, whether the first STA initiates transmission or transmits on all or part of the sub-channels in the adjacent channels and / or the alternative adjacent channels based on the OBSS PPDU transmission bandwidth.

10. The method of claim 9, wherein, the second channel control information comprises: first transmission indication information, the first transmission indication information indicating a transmission restriction mode of adjacent channels based on an OBSS PPDU transmission bandwidth.

11. The method of claim 9, wherein, the second channel control information comprises: a plurality of second transmission indication information, the second transmission indication information being used to indicate a transmission restriction mode of a corresponding channel in adjacent channels based on an OBSS PPDU transmission bandwidth.

12. The method according to any one of claims 9 to 11, wherein, the transmission restriction mode is one of one or more PPDU-based transmission restriction modes, or one of one or more transmission opportunity (TXOP)-based transmission restriction modes.

13. The method of claim 12, wherein, the one or more PPDU-based transmission restriction modes comprise one or more of the following: a first transmission mode, in which, during an OBSS PPDU transmission, transmission of a corresponding sub-channel in adjacent channels based on an OBSS PPDU transmission bandwidth is allowed and unrestricted; a second transmission mode, in which, during an OBSS PPDU transmission, transmission of a corresponding sub-channel in adjacent channels based on an OBSS PPDU transmission bandwidth is not allowed; a third transmission mode, in which, during an OBSS PPDU transmission, transmission of a corresponding sub-channel in adjacent channels and alternative adjacent channels based on an OBSS PPDU transmission bandwidth is not allowed; a fourth transmission mode, in which, during the OBSS PPDU transmission, transmission in a corresponding subchannel in an adjacent channel based on the OBSS PPDU transmission bandwidth is allowed before the end of the OBSS PPDU; a fifth transmission mode, in which, during the OBSS PPDU transmission, transmission in a corresponding subchannel in an adjacent channel based on the OBSS PPDU transmission bandwidth is delayed; a sixth transmission mode, in which, during the OBSS PPDU transmission, transmission in a corresponding subchannel in an adjacent channel and an alternative adjacent channel based on the OBSS PPDU transmission bandwidth is delayed.

14. The method of claim 12, wherein, The one or more TXOP-based transmission restriction modes include one or more of: a seventh transmission mode, in which, during a TXOP in which the OBSS PPDU is located, transmission in a corresponding subchannel in an adjacent channel based on the OBSS PPDU transmission bandwidth is allowed and is not restricted; an eighth transmission mode, in which, during a TXOP in which the OBSS PPDU is located, transmission in a corresponding subchannel in an adjacent channel based on the OBSS PPDU transmission bandwidth is not allowed; a ninth transmission mode, in which, during a TXOP in which the OBSS PPDU is located, transmission in a corresponding subchannel in an adjacent channel and an alternative adjacent channel based on the OBSS PPDU transmission bandwidth is not allowed.

15. The method according to any one of claims 9 to 14, wherein, The determining, based on the second channel control information, whether the first STA transmits on all or part of the subchannels in the adjacent channel and / or the alternative adjacent channel based on the OBSS PPDU transmission bandwidth includes: In a case where it is determined that the first STA satisfies a second condition, determining, based on the second channel control information, whether to initiate transmission or transmit on all or part of the subchannels in the adjacent channel and / or the alternative adjacent channel based on the OBSS PPDU transmission bandwidth.

16. The method of claim 15, wherein, The second condition includes: The first STA detects or receives a received signal strength level value of the OBSS PPDU that is greater than a second PD threshold value.

17. The method of claim 16, wherein, The second information further includes second condition information used to determine whether the first STA satisfies the second condition, and the second condition information includes: a second PD value used to indicate the second PD threshold value.

18. The method of any one of claims 1 to 17, wherein, The first information includes NPCA control information used to indicate a control parameter related to the NPCA operation.

19. The method of claim 18, wherein, The NPCA control information includes one or more of: second indication information used to indicate whether a STA of the first BSS is allowed to perform the NPCA operation; third indication information used to indicate an NPCA primary channel; fourth indication information used to indicate an NPCA operation channel; fifth indication information, used for indicating whether the STA of the first BSS is allowed to perform transmission through all or part of sub-channels in the adjacent channel based on the OBSS PPDU transmission bandwidth; a fourth bitmap, used for indicating whether the transmission of a sub-channel at a corresponding position in the sub-channels included in the first BSS bandwidth is not allowed.

20. The method of claim 19, wherein, The fifth indication information is used for indicating whether the STA of the first BSS is allowed to perform transmission through all or part of sub-channels in the adjacent channel based on the OBSS PPDU transmission bandwidth in a case where a first condition or a second condition is met.

21. The method of claim 19 or 20, wherein, The NPCA control information further includes: sixth indication information, used for indicating a transmission restriction mode of an NPCA operation triggered by a PPDU transmitted by the first STA.

22. The method of any one of claims 1 to 21, wherein, The control of the NPCA operation of the first STA based on the first information and / or the second information includes one or more of the following: determining, based on the first information and / or the second information, whether to switch from a primary channel of the first BSS to an NPCA primary channel; determining, based on the first information and / or the second information, whether to initiate an NPCA operation; determining, based on the first information and / or the second information, an NPCA operation parameter in a case where the NPCA operation is initiated.

23. The method of claim 22, wherein, The NPCA operation parameter includes one or more of the following: a first parameter, used for indicating a channel on which the NPCA-based transmission is performed; a second parameter, used for indicating a bandwidth of the NPCA operation channel; a third parameter, used for indicating a transmission opportunity or a frame exchange sequence duration of the NPCA.

24. The method of any one of claims 1 to 23, wherein, The method further includes: switching, by the first STA, to the NPCA primary channel and / or an NPCA secondary channel.

25. The method of claim 24, wherein, The condition triggering the switching to the NPCA primary channel and / or the NPCA secondary channel includes: detecting an OBSS control frame, and / or a TXOP duration indicated by the OBSS control frame being greater than or equal to a first duration threshold; or detecting an OBSS PPDU, and / or a transmission duration of the OBSS PPDU or a TXOP duration indicated by the OBSS PPDU being greater than or equal to a second duration threshold.

26. The method of any one of claims 1 to 25, wherein, The first STA is a first non-access point station (Non-AP STA) or a first access point (AP).

27. The method of claim 26, wherein, In a case where the first STA is a first Non-AP STA, the method further includes: receiving, by the first Non-AP STA, a first frame sent by a first AP, the first frame carrying the first information, and the first Non-AP STA being associated with the first AP.

28. The method of claim 27, wherein, The first frame is a management frame. 29.A first station (STA), comprising: a control unit, configured to control a non-primary channel access (NPCA) operation of the first STA based on first information and / or second information; the first information is an NPCA operation parameter information of a first basic service set (BSS) configuration, and the first BSS is a BSS in which the first STA is located. The second information is transmission restriction information of a neighboring channel and / or an alternative neighboring channel indicated by a second STA of a second BSS; The second BSS is an overlapping basic service set (OBSS) of the first BSS.

30. A first station (STA) comprising: A processor and a memory, the memory being configured to store a computer program, and the processor being configured to invoke and run the computer program stored in the memory, so that the first STA performs the method according to any one of claims 1 to 28.

31. A chip comprising: A processor configured to invoke and run a computer program from a memory, so that a device installed with the chip performs the method according to any one of claims 1 to 28. 32.A computer readable storage medium configured to store a computer program, execution of the computer program causing a computer to perform the method according to any one of claims 1 to 28. 33.A computer program product comprising computer program instructions, execution of the computer program instructions causing a computer to perform the method according to any one of claims 1 to 28. 34.A computer program, execution of the computer program causing a computer to perform the method according to any one of claims 1 to 28.

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