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, and a storage medium Technical Field

[0001] This application relates to the field of mobile communication technology, specifically to a wireless communication method and device, and a storage medium. Background Technology

[0002] The wireless LAN industry is one of the fastest-growing sectors in the entire data communication field. As a supplement and extension to traditional wired LANs, wireless LAN solutions have gained popularity among home network users, small and medium-sized office users, a wide range of enterprise users, and telecommunications operators due to their advantages such as flexibility, mobility, scalability, and lower investment costs, leading to their rapid adoption.

[0003] The Non-Primary Channel Access (NPCA) operating mode enables a station (STA) to access a secondary channel when the primary channel is busy due to Oerlapping Basic Service Set (OBSS) traffic or other conditions.

[0004] Summary of the Invention

[0005] This application provides a wireless communication method, device, and storage medium.

[0006] The wireless communication method provided in this application includes:

[0007] The first station STA controls the non-master 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 operation parameter information configured in the first basic service set (BSS), where the first BSS is the BSS where the first STA is located;

[0009] The second information is the transmission restriction information of the adjacent channel and / or alternative adjacent channel indicated by the second STA of the second BSS;

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

[0011] The first site STA provided in this application embodiment includes:

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

[0013] The first information is the NPCA operation parameter information configured in the first basic service set BSS, where the first BSS is the BSS where the first STA is located;

[0014] The second information is the transmission restriction information of the adjacent channel and / or alternative adjacent channel indicated by the second STA of the second BSS;

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

[0016] The communication device provided in this application includes a processor and a memory. The memory stores computer programs, and the processor calls and runs the computer programs stored in the memory, causing the communication device to perform the wireless communication method described above.

[0017] The chip provided in this application embodiment is used to implement the above-described wireless communication method.

[0018] Specifically, the chip includes a processor for calling and running a computer program from a memory, causing a device equipped with the chip to perform the aforementioned wireless communication method.

[0019] The computer-readable storage medium provided in this application embodiment is used to store a computer program, the execution of which causes the computer to perform the above-described wireless communication method.

[0020] The computer program product provided in this application includes computer program instructions, the execution of which causes a computer to perform the above-described wireless communication method.

[0021] The computer program provided in this application embodiment, when run on a computer, causes the computer to perform the aforementioned wireless communication method.

[0022] Through the above technical solution, the first STA controls the NPCA operation of the first STA according to the NPCA operation information configured in 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 first BSS, thereby controlling the channel on which the first STA performs NPCA operation and avoiding or mitigating possible adjacent channel transmission interference problems. Attached Figure Description

[0023] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0024] Figure 1 is an optional schematic diagram of an application scenario according to an embodiment of this application;

[0025] Figure 2A is an optional schematic diagram of an application scenario according to an embodiment of this application;

[0026] Figure 2B is an optional schematic diagram of an application scenario according to an embodiment of this application;

[0027] Figure 3 is a schematic diagram of an optional wireless communication method according to an embodiment of this application;

[0028] Figure 4 is an optional flowchart of the wireless communication method according to an embodiment of this application;

[0029] Figure 5 is a schematic diagram of the possible locations of adjacent channels and alternative adjacent channels according to an embodiment of this application;

[0030] Figure 6 is a schematic diagram of the possible adjacent channels and alternative adjacent channels according to an embodiment of this application;

[0031] Figure 7 is a schematic diagram of the optional format of NPCA parameter set elements according to an embodiment of this application;

[0032] Figure 8 is a schematic diagram of the optional format of the NPCA control field according to an embodiment of this application;

[0033] Figure 9 is a schematic diagram of an optional channel for a wireless communication method according to an embodiment of this application;

[0034] Figure 10 is a schematic diagram of an optional channel for a wireless communication method according to an embodiment of this application;

[0035] Figure 11 is a schematic diagram of an optional channel for a wireless communication method according to an embodiment of this application;

[0036] Figure 12 is a schematic diagram of the optional structure of the first STA according to an embodiment of this application;

[0037] Figure 13 is a schematic structural diagram of a communication device provided in an embodiment of this application;

[0038] Figure 14 is a schematic structural diagram of a chip according to an embodiment of this application;

[0039] Figure 15 is a schematic block diagram of a communication system provided in an embodiment of this application. Detailed Implementation

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

[0041] Figure 1 is an example of a communication system architecture applied in an embodiment of this application.

[0042] As shown in Figure 1, the communication system 100 may include an AP 110 and a STA 120 accessing the network through the AP 110. In some scenarios, the AP 110 may be referred to as an AP STA, meaning that in a sense, the AP 110 is also a type of STA. In some scenarios, the STA 120 may be referred to as a non-AP STA. In some scenarios, the STA 120 may include both AP STAs and non-AP STAs. Communication in the communication system 100 may include: communication between the AP 110 and the STA 120, or communication between STAs 120, or communication between the STA 120 and a peer STA. A peer STA may refer to the end device communicating with the STA 120; for example, a peer STA may be an AP or a non-AP STA.

[0043] The AP 110 serves as a bridge connecting wired and wireless networks, primarily linking various wireless network clients together and then connecting the wireless network to the Ethernet. The AP 110 can be a terminal device with a WiFi chip (such as a mobile phone) or a network device (such as a router).

[0044] It's important to note that the role of the STA 120 in a communication system is not absolute; that is, the STA 120 can switch between the roles of AP and STA. For example, in some scenarios, when a mobile phone is connected to a router, it acts as a STA; when the phone serves as a hotspot for other mobile phones, it acts as an AP.

[0045] In some embodiments, AP 110 and STA 120 may be devices used in vehicle networking, IoT nodes and sensors in the Internet of Things (IoT), smart cameras, smart remote controls, smart water and electricity meters in smart homes, and sensors in smart cities.

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

[0047] In some embodiments, AP 110 and / or STA 120 can be deployed on land, including indoors or outdoors, handheld, wearable, or vehicle-mounted; they can also be deployed on water (such as on ships); and they can also be deployed in the air (e.g., on airplanes, balloons, and satellites).

[0048] In some embodiments, STA 120 may be a mobile phone, tablet, computer with wireless transceiver capabilities, virtual reality (VR) device, augmented reality (AR) device, wireless device in industrial control, set-top box, wireless device in self-driving, vehicle communication device, wireless device in remote medical, wireless device in smart grid, wireless device in transportation safety, wireless device in smart city or smart home, vehicle communication device, wireless communication chip / application specific integrated circuit (ASIC) / system on chip (SoC), etc.

[0049] For example, STA 120 can also be a wearable device. Wearable devices, also known as wearable smart devices, are a general term for devices that utilize wearable technology to intelligently design and develop everyday wearables, such as glasses, gloves, watches, clothing, and shoes. Wearable devices are portable devices that are worn directly on the body or integrated into the user's clothing or accessories. Wearable devices are not just hardware devices, but also achieve powerful functions through software support, data interaction, and cloud interaction. Broadly speaking, wearable smart devices include those that are feature-rich, large in size, and can achieve complete or partial functions without relying on a smartphone, such as smartwatches or smart glasses, as well as those that focus on a specific type of application function and require the use of other devices such as smartphones, such as various smart bracelets and smart jewelry for vital sign monitoring.

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

[0051] It should be noted that Figures 1, 2A, and 2B are merely illustrative examples illustrating the system to which this application applies. Of course, the methods shown in the embodiments of this application can also be applied to other systems. Furthermore, the terms "system" and "network" are often used interchangeably herein. The term "and / or" in this document merely describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship. It should also be understood that the "instruction" mentioned in the embodiments of this application can be a direct instruction, an indirect instruction, or an indication of an association relationship. For example, A instructing B can mean that A directly instructs B, for example, B can be obtained through A; it can also mean that A indirectly instructs B, for example, A instructs C, and B can be obtained through C; or it can mean that there is an association relationship between A and B. It should also be understood that the term "correspondence" mentioned in the embodiments of this application can indicate a direct or indirect correspondence between two things, or an association between them, or a relationship of instruction and being instructed, configuration and being configured, etc. It should also be understood that the "predefined" or "predefined rules" mentioned in the embodiments of this application can be implemented by pre-storing corresponding codes, tables, or other methods that can be used to indicate relevant information in the device (e.g., including terminal devices and network devices), and this application does not limit the specific implementation method. For example, predefined can refer to what is defined in a protocol. It should also be understood that in the embodiments of this application, the term "protocol" can refer to standard protocols in the field of communication, such as the LTE protocol, the NR protocol, and related protocols applied to future communication systems, and this application does not limit this.

[0052] To facilitate understanding of the technical solutions of the embodiments of this application, the relevant technologies of the embodiments of this application are described below. The following relevant technologies are optional solutions and can be combined with the technical solutions of the embodiments of this application in any way, and they all fall within the protection scope of the embodiments of this application.

[0053] NPCA Operation

[0054] The NPCA operating mode allows the STA to access the secondary channel when the primary channel is busy due to OBSS traffic or other conditions. In particular, this operating mode does not assume that the STA can simultaneously detect or decode frames and obtain Network Allocation Vector (NAV) information on both the primary and secondary channels. At the same time, a BSS can only have one NPCA primary channel. When the BSS's primary channel is known to be busy due to OBSS traffic or other conditions, the STA can compete for the channel on the NPCA primary channel.

[0055] As shown in Figure 3, the operating bandwidth of the station is 80 MHz. When the station detects OBSS interference, i.e., interference PPDU (interference PPDU, inter-PPDU) at 20 MHz (or 40 MHz), it can compete for the channel on the other 60 MHz (or 40 MHz) secondary channel. Once it wins the transmission opportunity (TXOP), it can transmit.

[0056] Adjacent Channel Interference and Suppression

[0057] For an adjacent channel rejection (ADCR) bandwidth of W MHz (W being 20, 40, 80, 160, or 320), the desired signal strength is set 3 dB above the rate-dependent sensitivity specified by the receiver's minimum input level sensitivity, and the power of the interfering signal in the W MHz bandwidth is increased to 10% PER. The Physical Layer Service Data Unit (PSDU) length is 2048 bytes (octets) for Binary Phase Shift Keying (BPSK) modulation using dual carrier modulation (DCM), and 4096 octets for all other modulations. The power difference between the signal in the interfering channel and the desired channel is the corresponding ADCR.

[0058] For a W MHz channel (W = 20, 40, 80, or 160), the desired signal strength should be set 3 dB higher than the rate-dependent sensitivity specified in the "Minimum Input Level Sensitivity Requirement for Receiver" in the standard, and the power of the interfering signal with a W MHz bandwidth should be increased until the PER value reaches 10% at a PSDU length of 4096 octets, thereby measuring the non-adjacent channel suppression level. The power difference between the signal in the interfering channel and the desired channel is the corresponding non-adjacent channel suppression. Non-adjacent channel suppression should be satisfied by any non-adjacent channel located at least 2 × W MHz from the center frequency of the desired signal.

[0059] Space reuse operation

[0060] The goal of spatial multiplexing is to enable more frequent media reuse among OBSSs in densely deployed scenarios by managing signal and interference issues in OBSSs early on. Two independent spatial multiplexing modes are defined: spatial multiplexing based on OBSS packet detection (PD) and spatial multiplexing based on parameterized spatial reuse (PSR).

[0061] Spatial multiplexing based on OBSS PD includes two types: one is based on the non-SRG OBSS PD threshold, which allows STAs to ignore inter-BSS PPDUs under specific conditions using the non-SRG OBSS PD threshold (level); the other is based on the SRG OBSS PD level, which allows STAs to ignore inter-BSS PPDUs identified as SRG PPDUs under specific conditions using the SRG OBSS PD threshold (level).

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

[0063] In related technologies, the NPCA mechanism allows a station to switch to a non-primary channel (or secondary channel) to compete for TXOPs for PPDU transmission when its primary channel is busy due to OBSS traffic or other conditions. However, when a station communicates on a secondary channel (which serves as the NPCA operating channel) simultaneously with communication on the OBSS station's operating channel, if the secondary channel and the OBSS station's operating channel are too close together—for example, if the secondary channel is located in an adjacent or alternative adjacent channel range of the OBSS station's operating channel—it may cause severe adjacent-channel interference. This can affect signal reception at the receiver of the station's BSS and / or the receiver of the OBSS, impacting system throughput and communication efficiency.

[0064] To facilitate understanding of the technical solutions of the embodiments of this application, the technical solutions of this application are described in detail below through specific embodiments. The above-mentioned related technologies are optional solutions and can be arbitrarily combined with the technical solutions of the embodiments of this application, all of which fall within the protection scope of the embodiments of this application. The embodiments of this application include at least some of the following contents.

[0065] The wireless communication method provided in this application embodiment, as shown in Figure 4, includes:

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

[0067] The first information is the NPCA operation parameter information configured in the first basic service set BSS, where the first BSS is the BSS where the first STA is located;

[0068] The second information is the transmission restriction information of the adjacent channel and / or alternative adjacent channel indicated by the second STA of the second BSS;

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

[0070] The first STA is any STA in the first BSS, and the second STA is any STA in the second BSS. The first BSS and the second BSS are each other's OBSS. The primary channel (operating channel) of the first BSS and the second BSS are the same, and the first BSS supports NPCA operation.

[0071] In the embodiments of this application, the STA may include AP and / or non-AP STA.

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

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

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

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

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

[0077] For example, the first information may include adjacent channel transmission requirements and policy information and / or alternative adjacent channel transmission requirements and policy information, i.e., first channel control information. The adjacent channel transmission requirements and policy information may indicate whether to restrict adjacent channel transmission during NPCA operation, and which channels among the adjacent channels should be restricted. The alternative adjacent channel transmission requirements and policy information may indicate whether to restrict alternative adjacent channel transmission during NPCA operation, and which channels among the alternative adjacent channels should be restricted. The first channel control information is used to indicate whether to initiate NPCA operation, and some operating parameters when initiating NPCA operation.

[0078] For example, the first information may include: NPCA control information, used to control NPCA initiation and NPCA operation channels, etc.

[0079] In some embodiments, the second information can be understood as the Adjacent Channel Transmission Restriction (ACTR) information and / or Alternative Adjacent Channel Transmission Restriction (AACTR) information indicated by the second STA in the second BSS, characterizing the transmission restrictions of the adjacent channels and / or alternative adjacent channels indicated by the second STA of the second BSS, i.e., whether the transmission of adjacent channels and / or alternative adjacent channels is restricted during the transmission of the OBSS PPDU and / or during the TXOP in which the OBSS PPDU is located. The OBSS PPDU can be understood as the data PPDU transmitted by the second BSS as the OBSS of the first BSS, wherein the data PPDU is transmitted on the main channel of the second BSS.

[0080] In this embodiment, adjacent channels and alternative adjacent channels are relative to the OBSS PPDU transmission bandwidth, that is, adjacent channels and / or alternative adjacent channels based on the OBSS PPDU transmission bandwidth.

[0081] In some embodiments, adjacent channels and / or alternative adjacent channels based on OBSS PPDU transmission bandwidth may also be described as adjacent channels and / or alternative adjacent channels based on OBSS PPDU transmission channels and bandwidth.

[0082] In this embodiment of the 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, that is, the transmission bandwidth that is adjacent to the OBSS PPDU transmission channel and has the same bandwidth as the OBSS PPDU transmission bandwidth.

[0083] In this embodiment of the 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 that is adjacent to the adjacent channel bandwidth based on the OBSS PPDU transmission bandwidth and has the same bandwidth as the OBSS PPDU transmission bandwidth.

[0084] In this embodiment, an adjacent channel or a candidate adjacent channel may include one or more subchannels. The bandwidth of the subchannel is 20MHz or 40MHz. In one example, if the bandwidth of the adjacent channel or the candidate adjacent channel is 20MHz, 40MHz, or 80MHz, then the bandwidth of the subchannel is 20MHz; if the bandwidth of the adjacent channel or the candidate adjacent channel is 160MHz or 80+80MHz, then the bandwidth of the subchannel is 40MHz.

[0085] In one example, as shown in Figure 5, OBSS PPDU transmission is performed on channel 501. The transmission bandwidth of the OBSS PPDU is 20MHz. The adjacent channel is a 20MHz bandwidth adjacent to the transmission channel of the OBSS PPDU, and thus the adjacent channel includes sub-channel 502. The alternative adjacent channel is a 20MHz bandwidth adjacent to the adjacent channel, and thus the alternative adjacent channel includes sub-channel 503. In Figure 5, the bandwidth of sub-channels 501, 502, and 503 is 20MHz.

[0086] In one example, as shown in Figure 6, OBSS PPDUs are transmitted on sub-channels 601 and 602. The transmission bandwidth of the OBSS PPDU is 40MHz. The adjacent channels are 40MHz bandwidths adjacent to the transmission channels of the OBSS PPDU, including sub-channels 603 and 604. The alternative adjacent channels are 40MHz bandwidths adjacent to the adjacent channels, including sub-channels 605 and 606. In Figure 6, the bandwidth of sub-channels 601, 602, 603, 604, 605, and 606 is 20MHz.

[0087] It should be noted that in Figures 5 and 6, only the adjacent channels and alternative adjacent channels on one side of the OBSS PDUU are shown. In practice, there are adjacent channels and alternative adjacent channels on both sides of the OBSS PDUU.

[0088] In this embodiment, the first STA controls the NPCA operation of the first STA based on the NPCA operation information configured in 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 OBSSS of the first BSS, thereby controlling the channel on which the first STA performs NPCA operation and avoiding or mitigating possible adjacent channel transmission interference problems.

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

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

[0091] In this embodiment of the application, "listening" can also be replaced with "eavesdropping".

[0092] If the first STA detects the OBSS PPDU and meets the NPCA triggering conditions, it switches from the main 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] OBSS PPDU is a PPDU transmitted on the main channel of the second BSS. It can be sent from the Non-AP STA in the second BSS to the AP in the second BSS, or from the second AP to the second Non-AP STA.

[0094] OBSS PPDU can also be called interfering PPDU.

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

[0096] In this embodiment, when the first STA detects a PPDU transmitted by the second BSS (which is an OBSS), i.e., an OBSS PPDU, it determines that the main channel of the current first BSS is busy and needs to trigger NPCA operation. Then, based on the NPCA operation information configured in the first BSS and / or the transmission restriction information of the adjacent channel and / or alternative adjacent channel indicated by the second STA of the second BSS (which is the first BSS), the NPCA operation of the first STA is controlled. This controls the channel on which the first STA performs NPCA operation, avoiding or mitigating the possible interference problem between the transmission of OBSS PPDU and the transmission of PPDU on the NPCA operation channel, i.e., the adjacent channel transmission interference problem.

[0097] In some embodiments, the first information includes first channel control information, which is used to indicate the transmission requirements on all or some sub-channels of the adjacent channels and / or alternative adjacent channels based on the OBSS PPDU transmission bandwidth during the NPCA operation of the first BSS.

[0098] The NPCA operation of the first STA based on the first information includes:

[0099] In the case where the NPCA operation channel of the first BSS includes all or some of the sub-channels in the adjacent channel and / or alternative adjacent channel based on the OBSS PPDU transmission bandwidth, the first STA is determined, based on the first channel control information, whether to initiate or perform transmission on all or some 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 NPCA operations of the first BSS, wherein the NPCA operation channel includes the NPCA main channel and the NPCA auxiliary channel. When an NPCA initiates an NPCA operation, it can compete for the channel on the NPCA main channel.

[0101] The NPCA operation channel includes all or some of the sub-channels in the adjacent channels and / or alternative adjacent channels based on the OBSS PPDU transmission bandwidth. It can be considered that there is a possibility of NPCA operation on all or some of the sub-channels in the adjacent channels and / or alternative adjacent channels based on the OBSS PPDU transmission bandwidth. That is, PPDU transmission may occur on all or some of the sub-channels in the adjacent channels and / or alternative adjacent channels based on the OBSS PPDU transmission bandwidth. There may be mutual interference between the transmission of PPDU and the transmission of OBSS PPDU.

[0102] In this embodiment of the application, determining whether the first STA initiates 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 restricting 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 this embodiment, if the first STA is a transmission opportunity holder (TXOP holder), it is determined whether to initiate transmission on all or some of the sub-channels in the adjacent channel and / or alternative adjacent channel based on the OBSS PPDU transmission bandwidth. If it is determined to initiate transmission, a PPDU is transmitted on all or some 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 perform transmission on all or some of the sub-channels in the adjacent channel and / or alternative adjacent channel based on the OBSS PPDU transmission bandwidth.

[0104] Understandably, the TXOP holder, as the transmitting end, transmits PPDUs on all or some of the sub-channels in the adjacent channels and / or alternative adjacent channels based on the OBSS PPDU transmission bandwidth. The other end of the TXOP holder does not receive the PPDUs transmitted by the TXOP holder on all or some of the sub-channels in the adjacent channels and / or alternative adjacent channels based on the OBSS PPDU transmission bandwidth, thus performing PPDU transmission.

[0105] Determining whether to initiate or perform transmission on all or some sub-channels of the adjacent channels and / or alternative adjacent channels based on the first channel control information can be understood as: determining which sub-channels of the adjacent channels and / or alternative adjacent channels based on the OBSS PPDU transmission bandwidth based on the adjacent channel transmission requirements and / or alternative adjacent channel transmission requirements and / or alternative adjacent channel transmission requirements and strategy information configured in the first BSS, or determining whether to initiate or perform transmission on each sub-channel of the adjacent channels and / or alternative adjacent channels based on the OBSS PPDU transmission bandwidth.

[0106] In this embodiment of the application, when the NPCA operation channel includes all or some of the sub-channels in the adjacent channels and / or alternative adjacent channels based on the OBSS PPDU transmission bandwidth, the first STA determines whether to initiate or perform transmission on all or some of the sub-channels in the adjacent channels and / or alternative adjacent channels based on the OBSS PPDU transmission bandwidth based on the first channel control information, thereby limiting the transmission on all or some of the sub-channels in the adjacent channels and / or alternative adjacent channels based on the OBSS PPDU transmission bandwidth, thereby reducing the mutual interference between the transmission of PPDU based on NPCA and the transmission of OBSS PPDU.

[0107] In some embodiments, for a sub-channel in the NPCA operation channel that is not a neighboring channel and / or an alternative neighboring channel based on the OBSS PPDU transmission bandwidth, transmission on that sub-channel is not restricted, and the first STA initiates or performs transmission on that sub-channel.

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

[0109] The first bitmap indicates whether transmission is permitted on a sub-channel at a corresponding position in the adjacent channel and / or alternative adjacent channel based on the OBSS PPDU transmission bandwidth. Accordingly, the first STA determines, based on the first bitmap, whether to initiate or perform transmission on all or some of the sub-channels in the adjacent channel and / or alternative adjacent channel based on the OBSS PPDU transmission bandwidth.

[0110] In this embodiment, the first bit diagram is used to indicate whether each sub-channel in the adjacent channel and / or alternative adjacent channel based on the OBSS PPDU transmission bandwidth is allowed to transmit. The adjacent channel based on the OBSS PPDU transmission bandwidth and the sub-channel in the alternative adjacent channel correspond to the bits in the first bit diagram.

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

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

[0113] In one example, the first bit diagram is used to indicate whether each sub-channel in the adjacent channels and alternative adjacent channels based on the OBSS PPDU transmission bandwidth is allowed to transmit. The first bit diagram is 8 bits, with the first 4 bits (lower 4 bits) corresponding to the sub-channels in the adjacent channels and the last 4 bits (higher 4 bits) corresponding to the sub-channels in the alternative adjacent channels. Specifically, the lower bits indicate sub-channels closer to the OBSS PPDU transmission bandwidth, and the higher bits indicate sub-channels farther from the OBSS PPDU transmission bandwidth.

[0114] In this embodiment, the bits in the first bit diagram are configured to indicate whether transmission of the corresponding sub-channel is allowed based on different values. In one example, if one bit in the first bit diagram corresponds to one sub-channel, a bit value of 0 indicates that transmission of the corresponding sub-channel is allowed, and a bit value of 1 indicates that transmission of the corresponding sub-channel is not allowed.

[0115] In some embodiments, if the corresponding bit in the first bit diagram does not have a corresponding sub-channel in the adjacent channel or alternative adjacent channel, then the value of that bit is retained.

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

[0117] Taking the determination of whether to initiate or perform 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 as an example, for a sub-channel in the adjacent channel or alternative adjacent channel based on the OBSS PPDU transmission bandwidth, if the bit indication corresponding to the sub-channel in the first diagram does not allow the sub-channel to transmit, then the first STA will not initiate or perform transmission on the sub-channel; if the bit indication corresponding to the sub-channel in the first diagram allows the sub-channel to transmit, then the first STA will initiate or perform transmission on the sub-channel.

[0118] For example, based on the adjacent channels and alternative adjacent channels shown in Figure 6, the NPCA operation channel includes sub-channels 603 to 606. The first bit is 8 bits, with the first 4 bits indicating whether the sub-channel in the adjacent channel is used for transmission, and the last 4 bits indicating whether the sub-channel in the alternative adjacent channel is used for transmission. The first 4 bits are 0101, and the last 4 bits are 1010, where 1 indicates that transmission is allowed and 0 indicates that transmission is not allowed. In Figure 6, the adjacent channel includes two sub-channels, corresponding to the first two bits of the first 4 bits being 01, indicating that sub-channel 603 in the adjacent channel is not used for transmission and sub-channel 604 is used for transmission; the alternative adjacent channel includes two sub-channels, corresponding to the first two bits of the last 4 bits being 10, indicating that sub-channel 605 in the alternative adjacent channel is used for transmission and sub-channel 606 is not used for transmission. Then, the first STA initiates or performs NPCA-based PPDU transmission on sub-channels 604 and 605.

[0119] In some embodiments, determining whether the first STA initiates or performs transmission on an adjacent channel and / or a candidate adjacent channel based on the first channel control information includes:

[0120] If the first STA satisfies the first condition based on the first condition information, then based on the first channel control information, it is determined whether to initiate or perform 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.

[0121] If the first condition exists, the first STA determines whether the first condition is met. If the first condition is met, the first STA determines, based on the first channel control information, whether the first STA initiates or performs 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, the determination of whether to initiate 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 is not performed.

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

[0123] Condition 1: The received signal strength level of the first STA detecting or receiving the OBSS PPDU is greater than the first packet detection PD threshold;

[0124] Condition 2: The second BSS and the first BSS belong to the same NPCA group.

[0125] Condition 3: The first STA is not forced to follow the second information;

[0126] Condition 4: The power of the first STA performing NPCA operation is within the first power range.

[0127] The first PD threshold in condition 1 can be understood as the PD used for transmission restrictions of adjacent channels and / or alternative adjacent channels, i.e., the maximum PD value of NPCA adjacent channel transmission, which can be predefined, 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 the same NPCA group.

[0129] In some embodiments, if the BSS transmitting the OBSS PPDU is not a member of the same NPCA group as the first BSS, then there is no restriction on the transmission of adjacent channels and / or alternative adjacent channels based on the OBSS PPDU transmission bandwidth.

[0130] Condition 3 can be understood as the first STA not being forced to follow the second information. In this case, the first STA determines whether to initiate or perform transmission on all or part of the sub-channels in the adjacent channels and / or alternative adjacent channels based on the first channel control information in the first information.

[0131] The first power range in condition 4 can be understood as the range of the transmit power of the first STA for PPDU transmission based on the NPCA. The first power range can be determined based on the minimum power and maximum power of the NPCA. If the power of the first STA for PPDU transmission based on the NPCA is greater than the minimum power and greater than the maximum power of the NPCA, then the first STA is determined to satisfy condition 4.

[0132] In some embodiments, the first information further includes first condition information, which is used to determine whether the first STA satisfies a first condition. The first condition information includes one or more of the following:

[0133] A first PD value, wherein the first PD value is used to indicate the first PD threshold;

[0134] The second bitmap is used to indicate, through color values, the BSS that belongs to the same NPA group as the first BSS among the multiple BSSs;

[0135] The third bitmap is used to indicate, through a portion of the BSSID, a BSS that belongs to the same NPA group as the first BSS among a plurality of BSSs;

[0136] First power indication information, which is used to indicate the first power range.

[0137] The first instruction information is used to indicate whether to enforce compliance with the second information.

[0138] In some embodiments, the first PD value can be understood as the first deviation from the maximum PD value of the configured NPCA adjacent channel transmission. The first PD value plus the set deviation value generates the maximum PD value of the NPCA adjacent channel transmission, which is the first PD threshold value.

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

[0140] The second bitmap represents the BSS color value used by members of the NPCA group to which the transmitting STA belongs. In one 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 the corresponding bit in the second bitmap is 1, then at least one BSS uses the BSS color value, and that BSS is a member of the same NPCA as the transmitting STA. If a bit in the second bitmap is 0, then no BSS in the same NPCA group as the transmitting STA uses the corresponding BSS color value. The bit in the second bitmap corresponding to BSS color value 0 is reserved. In embodiments of this application, the second bitmap may be referred to as the NPCABSS color bitmap.

[0141] The third bitmap represents the Partial BSSID value used by members of the NPCA group to which the first STA belongs. In one example, each bit of the third bitmap corresponds to one of 64 possible BSSID values, where the lowest bit corresponds to a partial BSSID value of 0 and the highest bit corresponds to a partial BSSID value of 63. If a bit in the third bitmap is 1, then at least one BSSID value is used by a BSS belonging to a member of the same NPCA group that sent the STA. If a bit in the third bitmap is 0, then no BSS in the same NPCA group that sent the STA uses the corresponding Partial BSSID value. In this embodiment, the third bitmap may be called the NPCA Preference BSSID (NPCA Partial BSSID Bitmap).

[0142] The first power indication information can indicate the NPCA minimum power and the NPCA maximum power. In one example, the first power indication information includes: NPCA PD minimum offset (NPCA PD Min Offset) and NPCA PD maximum offset (NPCA PD Max Offset), wherein the NPCA minimum power is generated by adding a set offset value to the NPCA minimum power, and the NPCA maximum power is generated by adding a set offset value to the NPCA maximum power.

[0143] The first indication information is used to indicate whether to enforce compliance with the second information. In this embodiment, the first indication information is used to indicate whether to enforce compliance with the second information based on different values. In one example, when the value of the first indication information is 1, compliance with the second information is enforced; when the value of the first indication information is 0, the second information can be referenced. In this embodiment, the second information can be understood as the transmission restriction requirements indicated by the OBSS PPDU, and the first indication information is used to indicate whether to enforce compliance with the transmission restriction requirements indicated by the OBSS PPDU. In this embodiment, the first indication information can be called OBSS PPDU SIG NPCA mandatory information.

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

[0145] In some embodiments, the second information includes: second channel control information, which is used to indicate transmission restrictions of all or some sub-channels in adjacent channels and / or alternative adjacent channels based on the OBSS PPDU transmission bandwidth;

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

[0147] In the case where the NPCA operation channel of the first BSS includes all or some of the sub-channels in the adjacent channel and / or alternative adjacent channel based on the OBSS PPDU transmission bandwidth, the first STA is determined, based on the second channel control information, whether to initiate or perform transmission on all or some of the sub-channels in the adjacent channel and / or alternative adjacent channel based on the OBSS PPDU transmission bandwidth.

[0148] Determining whether to initiate or perform transmission on all or some sub-channels of the adjacent channels and / or alternative adjacent channels based on the OBSS PPDU transmission bandwidth based on the second channel control information can be understood as: determining whether to initiate or perform transmission on all or some sub-channels of the adjacent channels and / or alternative adjacent channels based on the adjacent channel transmission restriction information and / or alternative adjacent channel transmission restriction information carried by the OBSS PPDU.

[0149] In this embodiment of the application, when the NPCA operation channel includes all or some of the sub-channels in the adjacent channels and / or alternative adjacent channels based on the OBSS PPDU transmission bandwidth, the first STA determines whether to initiate or perform transmission on all or some of the sub-channels in the adjacent channels and / or alternative adjacent channels based on the OBSS PPDU transmission bandwidth based on the second channel control information, thereby limiting the transmission on all or some of the sub-channels in the adjacent channels and / or alternative adjacent channels based on the OBSS PPDU transmission bandwidth, thereby reducing the mutual interference between the transmission of PPDU based on NPCA and the transmission of OBSS PPDU.

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

[0151] In this embodiment, 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 the NPCA field or the ACT field.

[0152] In some embodiments, the second channel control information includes: first transmission indication information, which refers to the transmission restriction method of adjacent channels based on the OBSS PPDU transmission bandwidth.

[0153] Accordingly, the second channel control information includes a transmission indication information, namely the first transmission indication information, which is used to indicate the transmission restriction method of the entire adjacent channel and / or the alternative adjacent channel, that is, to define the transmission restriction method of the entire adjacent channel.

[0154] Understandably, the transmission constraints are the same for different sub-channels in adjacent channels and / or alternative adjacent channels.

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

[0156] Multiple second transmission indication information, which are used to indicate the transmission restriction method of the corresponding channel in the adjacent channel based on the OBSS PPDU transmission bandwidth.

[0157] Accordingly, the second channel control information includes multiple transmission indication information, i.e., multiple second transmission indication information. The second transmission indication information is used to indicate the transmission restriction method of the entire adjacent channel and / or some sub-channels in the alternative adjacent channel, i.e., the transmission restriction of some channels in the entire adjacent channel is defined respectively.

[0158] In one 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 method of the sub-channel closest to the OBSS PPDU transmission bandwidth, the second transmission control information is used to indicate the transmission restriction method of the second sub-channel closest to the OBSS PPDU transmission bandwidth, the third transmission control information is used to indicate the transmission restriction method 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 method of the fourth sub-channel closest to the OBSS PPDU transmission bandwidth.

[0159] In this embodiment of the application, if there is no corresponding sub-channel in the adjacent channel bandwidth or 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 one example, for the second second transmission indication information, when the OBSS PPDU transmission width is 20MHz or 40MHz, this transmission indication information is reserved or is the same as the first second transmission indication information. In one example, for the third second transmission indication information, when the OBSS PPDU transmission width is 20MHz or 40MHz, this transmission indication information is reserved or is the same as the first second transmission indication information.

[0161] In one example, for the fourth second transmission indication information, when the OBSS PPDU transmission width is 20MHz, this transmission indication information is reserved or is the same as the first second transmission indication information; when the OBSS PPDU transmission width is 40MHz, this transmission indication information is reserved or is the same as the second second transmission indication information.

[0162] In this embodiment of the application, the transmission indication information in the second channel control information represents different transmission restriction methods based on different values.

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

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

[0165] The first transmission mode is that during OBSS PPDU transmission, transmission of the corresponding channel in the adjacent channel based on the OBSS PPDU transmission bandwidth is allowed and unrestricted;

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

[0167] The third transmission mode (the third transmission mode is that during 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] The fourth transmission mode is that during the OBSS PPDU transmission, transmission in the corresponding channel in the adjacent channel based on the OBSS PPDU transmission bandwidth is allowed before the end of the OBSS PPDU;

[0169] The fifth transmission mode is to delay the transmission of the corresponding channel in the adjacent channel based on the OBSS PPDU transmission bandwidth during OBSS PPDU transmission;

[0170] The sixth transmission mode is to delay the transmission of the corresponding channel in the adjacent channel and the alternative adjacent channel based on the OBSS PPDU transmission bandwidth during OBSS PPDU transmission.

[0171] The first transmission mode can be understood as allowing and unrestricted transmission of corresponding sub-channels in adjacent channels based on the OBSS PPDU transmission bandwidth during OBSS PPDU transmission. In one example, if the first transmission indication information indicates the first transmission mode, then during OBSS PPDU transmission, transmission of sub-channels in the entire adjacent channels based on the OBSS PPDU transmission bandwidth is allowed and unrestricted. In another example, if the first second transmission indication information indicates the first transmission mode, then during OBSS PPDU transmission, transmission of the sub-channel closest to the OBSS PPDU transmission bandwidth in adjacent channels based on the OBSS PPDU transmission bandwidth is allowed and unrestricted. In some embodiments, the first transmission mode may be identified as ACT_ALLOW_AND_NOT_RESTRIC TED.

[0172] The second transmission mode can be understood as disallowing (or discouraging) the transmission of corresponding sub-channels in adjacent channels based on the current OBSS PPDU transmission bandwidth, or the puncturing of corresponding sub-channels, during the current OBSS PPDU transmission. In one example, if the first transmission indication information indicates the second transmission mode, then during the OBSS PPDU transmission, the transmission or puncturing of sub-channels in the entire adjacent channels based on the OBSS PPDU transmission bandwidth is disallowed. In another example, if the second second transmission indication information indicates the second transmission mode, then during the OBSS PPDU transmission, the transmission or puncturing of the second sub-channel closest to the OBSS PPDU transmission bandwidth in adjacent channels based on the OBSS PPDU transmission bandwidth is disallowed. In some embodiments, the second transmission mode may be identified as a PPDU-level disallowed ACT (ACT_DISALLO W_FOR_PPDU_LEVEL).

[0173] The third transmission mode can be understood as disallowing (or not recommending) transmission or puncturing of the corresponding sub-channels in adjacent channels and alternative adjacent channels based on the current OBSS PPDU transmission bandwidth during the current PPDU transmission period. In some embodiments, the third transmission mode can be identified as the PPDU-level disallowed ACT and AACT (ACT__AND_AACT_DISALLOW_FOR_PPDU_LEVEL).

[0174] The fourth transmission mode can be understood as allowing transmission of the corresponding sub-channel in the adjacent channel based on the OBSS PPDU transmission bandwidth only during the current OBSS PPDU transmission period, before the end of the current PPDU. In some embodiments, the fourth transmission mode can be identified as restricted before the end of the PPDU (ACT_RESTRICTED_AND_BEFORE_END_OF_PPDU).

[0175] The fifth transmission mode can be understood as delaying the transmission of adjacent channels based on the OBSS PPDU transmission bandwidth during the current OBSS PPDU transmission. That is, transmission of the corresponding sub-channel in the adjacent channels based on the PPDU transmission bandwidth is only allowed after the current PPDU transmission ends. In some embodiments, the fifth transmission mode can be identified as Delayed ACT (ACT_DELAYED).

[0176] The sixth transmission mode can be understood as delaying the transmission of adjacent channels and alternative adjacent channels based on the OBSS PPDU transmission bandwidth during the current OBSS PPDU transmission. That is, transmission of the corresponding sub-channels in the adjacent channels and alternative adjacent channels based on the OBSS PPDU transmission bandwidth is only allowed after the current OBSS PPDU transmission ends. In some embodiments, the sixth transmission mode can be identified as delayed ACT AND AACT (·ACT_AND_AACT_DELAYED).

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

[0178] The seventh transmission mode is that during the TXOP period where the OBSS PPDU is located, the transmission of the corresponding sub-channel in the adjacent channel based on the transmission bandwidth of the OBSS PPDU is allowed and unrestricted;

[0179] The eighth transmission mode is that during the TXOP period where the OBSS PPDU is located, the transmission of the corresponding sub-channel in the adjacent channel based on the transmission bandwidth of the OBSS PPDU is not allowed.

[0180] The ninth transmission mode is that during the TXOP period where the OBSS PPDU is located, transmission of the corresponding sub-channels in the adjacent channels and alternative adjacent channels based on the transmission bandwidth of the OBSS PPDU is not allowed.

[0181] The seventh transmission mode can be understood as allowing and unrestricted transmission of corresponding sub-channels in adjacent channels based on the OBSS PPDU transmission bandwidth during the TXOP transmission of the OBSS PPDU. In one example, if the first transmission indication information indicates the seventh transmission mode, then during the TXOP transmission of the OBSS PPDU, transmission of sub-channels in the entire adjacent channels based on the OBSS PPDU transmission bandwidth is allowed and unrestricted. In another example, if the first second transmission indication information indicates the seventh transmission mode, then during the TXOP transmission of the OBSS PPDU, transmission of the sub-channel closest to the OBSS PPDU transmission bandwidth in adjacent channels based on the OBSS PPDU transmission bandwidth is allowed and unrestricted. In some embodiments, the seventh transmission mode can be identified as ACT_ALLOW_AND_NOT_RESTRIC TED.

[0182] The eighth transmission mode can be understood as disallowing (or discouraging) transmission or puncturing of the corresponding sub-channel in adjacent channels based on the current OBSS PPDU's transmission bandwidth during the TXOP transmission of the current OBSS PPDU. In one example, if the first transmission indication information indicates the eighth transmission mode, then during the TXOP transmission of the current OBSS PPDU, transmission or puncturing of the sub-channel in the entire adjacent channel based on the OBSS PPDU's transmission bandwidth is not permitted. In another example, if the second transmission indication information indicates the eighth transmission mode, then during the TXOP transmission of the current OBSS PPDU, transmission or puncturing of the second sub-channel closest to the OBSS PPDU's transmission bandwidth in adjacent channels based on the OBSS PPDU's transmission bandwidth is not permitted.

[0183] In some embodiments, the eighth transport mode may be identified as a disallowed ACT (ACT_DISALLOW_FOR_TXOP_LEVEL) at the TXOP level.

[0184] The ninth transmission mode can be understood as disallowing (or not recommending) transmission or puncturing of the corresponding sub-channels in adjacent channels and alternative adjacent channels based on the current OPSS PPDU transmission bandwidth during the TXOP transmission period. In some embodiments, the ninth transmission mode can be identified as the disallowed ACT and AACT (ACT__AND_AACT_DISALLOW_FOR_TXOP_LEVEL) at the TXOP level.

[0185] For example, based on the adjacent channels and alternative adjacent channels shown in Figure 6, the NPCA operation channel includes sub-channels 603 to 606. The second channel control information includes first transmission indication information, and the transmission restriction mode indicated by the first transmission indication information is the third transmission mode. Therefore, during the OBSS PPDU transmission, transmission is not allowed to be initiated or performed on sub-channels 603 to 606 included in the NPCA operation channel. At this time, the first STA does not initiate or perform NPCA-based PPDU transmission on sub-channels 603 and 606.

[0186] For example, based on the adjacent channels and alternative adjacent channels shown in Figure 6, the NPCA operation channels include: sub-channels 603 to 606. The second channel control information includes four second transmission indication messages, corresponding to sub-channels 603 to 606 respectively. The first second transmission indication message corresponding to sub-channel 603 indicates the first transmission mode, the second second transmission indication message corresponding to sub-channel 604 indicates the first transmission mode, the third second transmission indication message corresponding to sub-channel 605 indicates the second transmission mode, and the fourth second transmission indication message corresponding to sub-channel 606 indicates the second transmission mode. Then, during OBSS PPDU transmission, the first STA initiates or performs transmission on sub-channels 603 and 604, but does not initiate or perform transmission on sub-channels 605 and 606.

[0187] In some embodiments, determining whether the first STA initiates or performs transmission on all or some sub-channels in the adjacent channel and / or alternative adjacent channel based on the second channel control information includes:

[0188] If the first STA satisfies the second condition, it is determined, based on the second channel control information, whether to initiate or perform 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.

[0189] If the second condition exists, the first STA determines whether the second condition is met. If the second condition is met, the first STA determines, based on the second channel control information, whether the first STA initiates or performs 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 second condition is not met, the determination of whether to initiate 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 is not performed.

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

[0191] Condition 5: The packet detection value of the OBSS PPDU detected by the first STA is greater than the second PD threshold.

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

[0193] If 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 includes: second condition information, the second condition information being used to determine whether the first STA satisfies the second condition; the second condition information includes:

[0195] The second PD value is used to indicate the second PD threshold.

[0196] In some embodiments, the second PD value can be understood as the deviation of the maximum PD value of the NPCA adjacent channel transmission carried by the OBSS PPDU. The second PD value plus the set deviation value generates the value of the maximum PD of the NPCA adjacent channel transmission, which is the second PD threshold.

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

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

[0199] In one example, if the first STA determines, based on the first channel control information, whether to initiate or perform transmission on all or some of the sub-channels in the adjacent channels and / or alternative adjacent channels based on the OBSS PPDU transmission bandwidth, it determines, based on the first channel control information, the sub-channels on which to initiate or perform transmission based on NPCA, i.e., on which sub-channels to transmit.

[0200] In one example, if the first STA determines, based on the first channel control information, whether to initiate or perform transmission on all or some of the sub-channels in the adjacent channels and / or alternative adjacent channels based on the OBSS PPDU transmission bandwidth, it determines, based on the second channel control information, the transmission restriction method for each sub-channel in the adjacent channels and / or alternative adjacent channels based on the OBSS PPDU transmission bandwidth.

[0201] In one example, when the first STA determines whether to initiate or perform transmission on all or some of the sub-channels in the adjacent channels and / or alternative adjacent channels based on the first channel control information and the second channel control information, it may determine the sub-channels based on NPCA transmission based on the first channel control information and determine the transmission restriction method on these sub-channels based on the second channel control information.

[0202] In this embodiment of the application, the behavior or rules of the NPCA operation determined by the first STA based on the first information and / or the second information include, but are not limited to, one or more of the following:

[0203] Action 1: When the NPA primary channel and / or secondary channel corresponding to the NPA operation are located on the adjacent channel of the OBSS PPDU, and the first information and / or the second information indicate that the adjacent channel transmission based on the OBSS PPDU transmission bandwidth is allowed and unrestricted, then the first STA may initiate an NPA operation on the corresponding NPA primary channel and / or secondary channel during the current OBSS PPDU transmission, and its operation is not restricted by the adjacent channel transmission.

[0204] Action 2: When the NPCA primary channel and / or secondary channel corresponding to the NPCA operation are located on the adjacent channel of the OBSS PPDU, and the first information and / or the second information indicate that the corresponding channel in the adjacent channel is not allowed to initiate or transmit, then the first STA will not initiate or transmit on the NPCA primary channel during the OBSS PPDU transmission. In this case, the first STA may not switch to the NPCA primary channel during the current OBSS PPDU transmission, or the first STA may switch to the NPCA channel after recognizing the OBSS PPDU, and if it wins the TXOP during the current PPDU transmission, it may not initiate transmission or delay transmission.

[0205] Action 3: When the NPCA operation corresponds to the NPCA primary channel and / or secondary channel located on the adjacent channel of the OBSS PPDU, and the first information and / or the second information indicate that initiation or transmission is permitted on the primary channel but not on the corresponding secondary channel (or the transmission on the corresponding secondary channel is punctured), then the first STA may initiate or transmit on the NPCA primary channel during the current OBSS PPDU transmission but not on the corresponding secondary channel (or the transmission on the corresponding secondary channel is punctured). Specifically, the first STA may switch to the NPCA primary channel to compete for TXOP and initiate transmission during the current OBSS PPDU transmission, but not compete for TXOP or initiate transmission on the corresponding secondary channel, or the transmission on the corresponding secondary channel is punctured.

[0206] Action 4: When the NPA primary channel and / or secondary channel corresponding to the NPA operation are located on the adjacent channel of the OBSS PPDU, and the first information and / or the second information indicate that during the current PPDU transmission, only adjacent channel transmission based on the PPDU transmission bandwidth is allowed before the end of the current PPDU, then when the first STA switches to the NPA primary channel and / or secondary channel during the current OBSS PPDU transmission and competes for TXOP or initiates transmission, the TXOP or frame exchange sequence initiated on the NPA primary channel and / or secondary channel should be terminated before the end of the current PPDU.

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

[0208] In one example, if the first indication information does not indicate whether to initiate or perform transmission on all or some of the sub-channels 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 perform transmission on all or some 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.

[0209] In one example, if the first indication information does not indicate whether to initiate or perform transmission on all or some of the sub-channels 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 perform transmission on all or some 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.

[0210] In some embodiments, the first STA determines, based on first channel control information and / or second channel control information, whether to initiate or perform transmission on all or some of the sub-channels in the adjacent channel and / or alternative adjacent channel based on the OBSS PPDU transmission bandwidth, if one or more of the following conditions are met:

[0211] Condition 1: The received signal strength level of the first STA detecting or receiving the OBSS PPDU is greater than the first packet detection PD threshold;

[0212] Condition 2: The second BSS and the first BSS belong to the same NPCA group.

[0213] Condition 4: The power of the first STA performing NPCA operation is within the first power range.

[0214] Condition 5: The packet detection value of the OBSS PPDU detected by the first STA is greater than the second PD threshold.

[0215] In some embodiments, the first information further includes: NPCA control information, which is used to indicate control parameters related to the operation of the NPCA.

[0216] In this embodiment of the application, the first STA determines the control parameters related to NPCA operation based on the NPCA control information included in the first information. In the NPCA operation controlled by the control parameters related to NPCA operation, it determines whether to initiate or perform transmission on all or part of the sub-channels in the adjacent channel and / or alternative adjacent channel based on the first channel control information and / or the second channel control information.

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

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

[0219] The second indication information is used to indicate whether the STA of the first BSS is allowed to perform NPCA operation;

[0220] The third indication information is used to indicate the NPCA main channel;

[0221] The fourth indication information is used to indicate the NPCA operation channel;

[0222] 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 channels or sub-channels in the adjacent channels and / or alternative adjacent channels based on the OBSS PPDU transmission bandwidth;

[0223] The fourth bitmap is used to indicate whether transmission of a subchannel at a corresponding position in the channel included in the first BSS bandwidth is not allowed.

[0224] The second indication information is used to indicate whether NPCA operation is permitted with the STA of the first BSS, i.e., it is the indication information used to determine whether to perform NPCA operation. The encoded value of the second indication information can be the sub-channel number corresponding to the NPCA main channel. The second indication information can indicate whether NPCA operation, i.e., NPCA-based transmission, is permitted based on different values. In one example, when the value of the second indication information is 1, it indicates that NPCA operation or NPCA-based transmission is not permitted. When the value of the second indication information is 0, it indicates that NPCA operation or NPCA-based transmission is permitted. In some embodiments, the second indication information can be marked as NPCA Disallowed.

[0225] The third indication information is used to indicate which channel within the bandwidth occupied by the first BSS is the primary NPCA channel; that is, the third indication information is used to determine the primary NPCA channel. In one example, the lowest frequency 20MHz sub-channel in the channel set within the bandwidth occupied by the BSS is coded as 0, and each incrementing value corresponds to the next higher frequency 20MHz sub-channel. In some embodiments, the third indication information may identify the primary NPCA channel.

[0226] The fourth indication information is used to indicate which channels within the bandwidth occupied by the first BSS are NPCA operating channels; that is, the fourth indication information is used to determine the NPCA operating channels. In some embodiments, the fourth indication information is a bitmap, where the lowest numbered bit corresponds to the lowest frequency sub-channel in the set of all sub-channels within the BSS bandwidth, 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 that bit position is an NPCA operating channel, and a bit in the bitmap is set to 0, indicating that the sub-channel corresponding to that bit position is not an NPCA operating channel.

[0227] The fifth indication information is used to indicate whether the STA of the first BSS is allowed to transmit through all or some of the sub-channels in the adjacent channels and / or alternative adjacent channels based on the OBSS PPDU transmission bandwidth. That is, the fifth indication information is used to determine whether NPCA operation based on ACT is allowed. The fifth indication information indicates whether the STA of the first BSS is allowed to transmit through all or some of the sub-channels in the adjacent channels and / or alternative adjacent channels based on the OBSS PPDU transmission bandwidth based on different values. In one example, when the fifth indication information is 1, it indicates that initiating or performing transmission through all or some of the sub-channels in the adjacent channels in the OBSS PPDU transmission bandwidth is not allowed. 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 some of the sub-channels in the adjacent channels in the OBSS PPDU transmission bandwidth based, provided that a first condition or a second condition is met.

[0228] In this embodiment, the fourth bitmap is used to indicate whether each subchannel in the subchannels included in the first BSS bandwidth is allowed to transmit. The subchannels in the first BSS bandwidth correspond to bits in the fourth bitmap. In some embodiments, one bit in the fourth bitmap may correspond to one subchannel. In one example, the bandwidth of the subchannel is 20MHz, the lower bits of the fourth bitmap correspond to the lowest frequency 20MHz subchannel in the set of all 20MHz subchannels within the first BSS bandwidth, and each consecutive bit in the fourth bitmap corresponds to the next higher frequency 20MHz subchannel. In some embodiments, the bits in the bitmap are used to indicate whether the corresponding subchannel is allowed to initiate or transmit based on different values. In one example, a bit in the fourth bitmap is set to 1, indicating that the subchannel corresponding to that bit is not allowed to initiate or transmit; a bit in the fourth bitmap is set to 0, indicating that the subchannel corresponding to that bit is allowed to initiate or transmit, i.e., there is no transmission restriction on the subchannel corresponding to that bit. In some embodiments, disallowing subchannel transmission can also be replaced by disallowing subchannel transmission by puncturing. In some embodiments, the fourth bitmap may be called a disallowed subchannel bitmap.

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

[0230] Taking the NPCA operation channel as an example, which includes all or some sub-channels of adjacent channels and / or alternative adjacent channels, the decision to initiate or perform transmission on all or some sub-channels of adjacent channels and / or alternative adjacent channels based on the OBSS PPDU transmission bandwidth is determined based on the fourth bitmap. For a sub-channel of the adjacent channel or alternative adjacent channel of the transmission channel of the OBSS PPDU, if the bit indication corresponding to the sub-channel in the fourth bitmap does not allow the sub-channel to transmit, the first STA determines not to initiate or perform transmission on the sub-channel; if the bit indication corresponding to the sub-channel in the first bitmap allows the sub-channel to transmit, the first STA determines to initiate or perform transmission on the sub-channel.

[0231] Taking the determination of whether to initiate or perform transmission on all or part of the sub-channels in the adjacent channels and / or alternative adjacent channels based on the OBSS PPDU transmission bandwidth as an example, for a sub-channel in the adjacent channels or alternative adjacent channels of the transmission channel of the OBSS PPDU, if the bit indication corresponding to the sub-channel in the first bit diagram does not allow the transmission of the sub-channel, or the bit indication corresponding to the sub-channel in the fourth bit diagram does not allow the transmission of the sub-channel, then the first STA determines not to initiate or perform transmission on the sub-channel. If the bit indication corresponding to the sub-channel in the first bit diagram allows the transmission of the sub-channel and the bit indication corresponding to the sub-channel in the fourth bit diagram allows the transmission of the sub-channel, then the first STA determines to initiate or perform transmission on the sub-channel.

[0232] For example, based on the adjacent channels and alternative adjacent channels shown in Figure 6, the NPCA operation channels include: sub-channels 603 to 606. The four bits indicating sub-channels 603 to 606 in the fourth bit diagram are: 1001, where 1 indicates that transmission is not allowed and 0 indicates that transmission is allowed. Then, sub-channels 603 and 606 are allowed to transmit, while sub-channels 604 and 605 are not allowed to transmit. Then, the first STA initiates or performs NPCA-based PPDU transmission on sub-channels 603 and 604.

[0233] In this embodiment of the application, the first STA can determine whether to initiate or perform transmission on all or part of the sub-channels in the adjacent channel and / or alternative adjacent channel based on the first bit map and the fourth bit map.

[0234] In one example, the first STA determines the sub-channels that are allowed to transmit based on the fourth bitmap, and determines the adjacent channels and / or alternative adjacent channels that are allowed to initiate or transmit among the sub-channels that are allowed to initiate or transmit based on the first bitmap.

[0235] Taking the NPCA operation channel excluding all or some of the sub-channels in adjacent channels and / or alternative adjacent channels as an example, the decision on whether to initiate or perform transmission on each sub-channel of the NPCA operation channel is based on the fourth bitmap. For a sub-channel of the NPCA operation channel, if the bit indication corresponding to the sub-channel in the fourth bitmap does not allow transmission on the sub-channel, the first STA determines not to initiate or perform transmission on the sub-channel; if the bit indication corresponding to the sub-channel in the first bitmap allows transmission on the sub-channel, the first STA determines to initiate or perform transmission on the sub-channel.

[0236] In this embodiment of the 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, it determines whether NPCA operation can be performed and on which candidate sub-channels NPCA operation can be performed based on the NPCA control information.

[0237] In cases where the NPCA operation channel includes all or part of the sub-channels of adjacent channels and / or alternative adjacent channels, the transmission is initiated or performed on which sub-channels, i.e. the target sub-channel, among the candidate sub-channels is determined based on the first channel control information and / or the second channel control information. Furthermore, the transmission restriction method indicating how to perform the transmission on the target sub-channel can also be determined.

[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 the transmission mode of NPCA operation triggered by the PPDU transmitted by the first STA.

[0240] In this embodiment, the NPCA operation performed by the first STA is an NPCA operation triggered by the PPDU transmitted by the second STA, namely the OBSS PPDU, that is, the second STA triggers the NPCA operation of the first STA.

[0241] In this embodiment of the 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 method includes one or more of the following transmission methods: a second transmission method, a third transmission method, and a ninth transmission method.

[0244] In this embodiment of the application, the sixth indication information can be identified as PPDU SIG NPCA allowed. In one example, PPDU SIG NPCA allowed 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. Specifically, a value of 1 for PPDU SIG NPCA allowed indicates 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, a value of 0 for PPDU SIG NPCA allowed is specified.

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

[0246] Based on the first information and / or the second information, determine whether to switch from the main channel of the first BSS to the main channel of the NPCA;

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

[0248] The NPCA operation parameters are determined based on the first information and / or the second information when initiating an NPCA operation.

[0249] In some embodiments, the NPCA operating parameters include one or more of the following:

[0250] The first parameter is used to indicate the channel for NPCA-based transmission;

[0251] The second parameter indicates the bandwidth of the NPCA operation channel;

[0252] The third parameter is used to indicate the transmission opportunity or frame exchange sequence duration of the NPCA.

[0253] In this embodiment, the first STA determines, based on first information and / or second information, whether to switch from the primary channel of the first BSS to the primary channel of the NPCA, and / or whether to initiate an NPCA operation, and / or determine the NPCA operation parameters, and transmits using the determined parameters during the NPCA operation. The NPCA operation includes which sub-channels in the NPCA operation channel initiate or transmit, the bandwidth of the corresponding channel in the NPCA operation channel, and the duration of the TXOP or frame exchange sequence in the NPCA operation.

[0254] In one example, the first STA determines whether to switch from the primary channel of the first BSS to the primary channel of the NPCA based on second indication information. In one example, the first STA determines whether to switch from the primary channel of the first BSS to the primary channel of the NPCA based on first channel control information and / or second channel control information. In one example, the first STA determines whether to initiate an NPCA operation based on first channel control information and / or second channel control information. In one example, the first STA determines whether to initiate an NPCA operation based on NPCA based on second indication information. In one example, the first STA determines the channel for NPCA-based transmission based on third indication information, fourth indication information, and first channel control information and / or second channel control information. In one example, the first STA determines the bandwidth of the NPCA operation channel based on the channel used for NPCA transmission. In one example, the first STA determines the transmission opportunity or frame exchange sequence duration of the NPCA based on first channel control information and / or second channel control information. In one example, if the first STA determines to initiate an NPCA operation and determines to switch from the primary channel of the first BSS to the primary channel of the NPCA, then the first STA switches from the primary channel of the first BSS to the primary channel of the NPCA and initiates the NPCA operation. In one example, the first STA can switch from the main channel of the first BSS to the main channel of the NPCA and determine whether to initiate an NPCA operation. If it is determined that an NPCA operation should be initiated, then the NPCA operation is initiated.

[0255] In the wireless communication method provided in this application embodiment, the first STA intending to initiate NPCA operation determines whether to initiate NPCA operation based on the first information (adjacent channel transmission requirements and policy information and / or alternative adjacent channel transmission requirements and policy information) configured in the first BSS, and / or the second information (adjacent channel transmission restriction information and / or alternative adjacent channel transmission restriction information indication carried in the OBSS PPDU). It also determines the relevant parameters of NPCA operation (including which secondary channels are used as NPCA operation channels for transmission, the bandwidth of the NPCA operation channel, the transmission power, the TXOP or frame exchange sequence duration of the NPCA operation, etc.), and transmits using the determined parameters during NPCA operation. This method can avoid or mitigate adjacent channel interference caused by the transmission of the STA during NPCA operation and the transmission of the OBSS station to the other's transmission.

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

[0257] In one example, the first STA switches to the NPCA primary channel. In another example, the first STA switches to the NPCA secondary channel. In yet another example, the first STA switches to both the NPCA primary channel and the NPCA secondary channel.

[0258] In one example, if the first STA meets the NPCA operation triggering conditions, it can switch from the primary channel of the first BSS to the NPCA primary channel and / or the NPCA secondary channel, and control the NPCA operation of the first STA based on the first information and / or the second information.

[0259] In one example, when the first STA meets the NPCA operation triggering condition, the NPCA operation of the first STA is controlled based on the first information and / or the second information. When it is determined to initiate or perform an NPCA operation, the first BSS switches from the primary channel to the NPCA primary channel and / or the NPCA secondary channel and performs the NPCA operation, that is, performs Enhanced Distributed Channel Access (EDCA) operation, receives or sends PPDUs on the NPCA operation channel.

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

[0261] In this embodiment of the application, the NPCA operation channel includes the NPCA main channel and zero or one or more NPCA non-main channels. The NPCA main channel is also called the NPCA anchor channel.

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

[0263] In this embodiment, the NPCA operation channel is pre-negotiated. Which sub-channels within the NPCA operation channel will be used for transmission depends on first and / or second information, which corresponding sub-channels within the NPCA operation channel will compete for the TXOP and / or initiate transmission. Specifically, when an NPCA secondary channel is included, transmission can only be initiated after winning the TXOP on the NPCA primary channel. For the NPCA secondary channel, while acquiring the TXOP right on the NPCA primary channel, the NPCA secondary channel must be checked for idleness using the priority interframe space (PIFS). If the corresponding NPCA secondary channel is idle during the checked PIFS period, the TXOP right is also acquired on the corresponding NPCA secondary channel.

[0264] In this embodiment of the application, the NPCA operation triggering condition can be understood as the condition that triggers the NPCA operation, that is, the condition that triggers the switch to the NPCA main channel and / or the NPCA secondary channel.

[0265] In some embodiments, the conditions that trigger a switch to the NPCA primary channel and / or the NPCA secondary channel include:

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

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

[0268] In this embodiment of the application, the OBSS empty frame can be understood as the control frame for frame exchange in the second BSS. The control frame may include: initial control frame (ICF), immediate response (IR) frame, etc.

[0269] In some embodiments, the duration of the TXOP indicated by the OBSS control frame may be indicated by the "duration" field carried by the OBSS control frame. In some embodiments, the duration of the TXOP indicated by the OBSS PPDU may be indicated by the "duration" field carried by the OBSS PPDU.

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

[0271] When the first STA is a first Non-AP STA, if the first Non-AP STA detects an OBSS PPDU on the primary channel of the first BSS, and the OBSS PPDU meets the NPCA operation triggering conditions, it switches from the primary channel of the first BSS to the primary channel of the NPCA, and determines whether to initiate an NPCA operation based on the first information and / or the second information. If an NPCA operation is initiated, the PPDU is transmitted on the determined sub-channel. The channel can be contested by the first Non-AP STA or by the first AP.

[0272] When the first STA is the first AP, if the first AP detects an OBSS PPDU on the main channel of the first BSS, and the OBSS PPDU meets the NPCA operation triggering conditions, it switches from the main channel of the first BSS to the main channel of the NPCA, and determines whether to initiate an NPCA operation based on the first information and / or the second information. If an NPCA operation is initiated, the PPDU is transmitted on the determined sub-channel. The channel can be contested by the first Non-AP STA or by the first AP.

[0273] In this embodiment of the application, the PPDU transmitted based on NPCA can be sent from the first Non-AP STA to the first AP, or it can be sent from the first AP to the first Non-AP STA.

[0274] In some embodiments, where the first STA is a first Non-AP STA, the method further includes:

[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] When the first STA is the first Non-AP STA, the first Non-AP STA receives the first information sent by the first AP in the first frame.

[0277] In this embodiment of the application, when the first STA is the first AP, it can possess the first information.

[0278] In this embodiment of the application, the first AP can publish first information to its 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 management frames such as beacon frames and associated response frames.

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

[0281] In this embodiment of the application, the first element can be an element already defined in the first frame or a newly defined element.

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

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

[0284] In this embodiment of the application, the first element may be referred to as the NPCA parameter set element.

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

[0286] In some embodiments, the field carrying the first PD value in the first element may be referred to as the NPCA Adjacent Channel Transmission Maximum PD Value Offset (NPCAACT PD Max Offset) field or the NPCA Adjacent Channel Transmission Maximum PD Value Offset subfield. In some embodiments, the field carrying the second bitmap in the first element may be referred to as the NPCABSS Color Bitmap field or the NPCABSS Color Bitmap subfield. In some embodiments, the field carrying the third bitmap in the first element may be referred to as the NPCA Partial BSSID Bitmap field. In some embodiments, the field carrying the NPCA PD Minimum Offset in the first element may be referred to as the NPCA PD Max Offset field, and the field carrying the NPCA PD Maximum Offset in the first element may be referred to as the NPCA PD Maximum Offset field. In some embodiments, the field carrying the first indication information in the first element may be referred to as the OBSS PPDU SIG NPCA Forced field or the OBSS PPDU SIG NPCA Forced subfield. In some embodiments, the field carrying the second indication information in the first element may be referred to as the NPCA Disallowed field or a subfield. In some embodiments, the field carrying the third indication information in the first element may be referred to as the NPCA Main Channel field or a subfield. In some embodiments, the field carrying the fourth indication information in the first element may be referred to as the NPCA operation channel bitmap subfield or subfield. In some embodiments, the field carrying the fifth indication information in the first element may be referred to as the ACT subfield or subfield.

[0287] The wireless communication method provided in this application embodiment will be further described below, taking the first station as a Non-AP STA as an example.

[0288] The wireless communication method provided in this application is an adjacent channel transmission coordination scheme based on OBSS PD, which can be used, but is not limited to, avoiding or mitigating potential adjacent channel transmission interference problems in NPCA operations.

[0289] The wireless communication method provided in this application includes:

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

[0291] (2) The AP can provide the site associated with it with the first information required for performing NPCA operations by carrying NPCA parameter set elements in management frames such as beacon frames or associated response frames. The NPCA parameter set elements may include adjacent channel transmission requirements and policies information and / or alternative adjacent channel transmission requirements and policies information. The adjacent channel transmission requirements and policies information may indicate whether to restrict adjacent channel transmission, which channels among the adjacent channels to restrict, and how to restrict adjacent channel transmission when encountering an OBSS PPDU carrying adjacent channel transmission restriction information.

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

[0293] (4) The site of another BSS that intends to initiate NPCA operation determines whether to initiate NPCA operation based on the adjacent channel transmission requirements and policy information and / or alternative adjacent channel transmission requirements and policy information published by the AP of its BSS, and / or the adjacent channel transmission restriction information and / or alternative adjacent channel transmission restriction information carried by the OBSS PPDU (Note: the BSS where the site sending the PPDU is located is the OBSS of the BSS where the site intending to initiate NPCA operation is located, and the PPDU is an OBSS PPDU or an inter-BSS PPDU). The site determines the relevant parameters of NPCA operation (including which secondary channels are used as NPCA operation channels for transmission, the bandwidth of the NPCA operation channel, the TXOP or frame exchange sequence duration of NPCA operation, etc.), and transmits using the determined relevant parameters of NPCA operation during NPCA operation, thereby avoiding or mitigating adjacent channel interference caused by the transmission of the site during NPCA operation and the transmission of the OBSS site to the other party's transmission.

[0294] In this embodiment, the current PPDU transmission bandwidth is set to W. The center frequency of the adjacent channel is located at a distance of W MHz from the center frequency of the current PPDU transmission channel, and the bandwidth range of the adjacent channel is W. Additionally, the center frequency of the candidate adjacent channel is located at a distance of 2W MHz from the center frequency of the current PPDU transmission channel, and the bandwidth range of the candidate adjacent channel is W. Adjacent channel transmission refers to transmission using all or part of the channels within the bandwidth range of the adjacent channel; while candidate adjacent channel transmission refers to transmission using all or part of the channels within the bandwidth range of the candidate adjacent channel.

[0295] In one example, if the current PPDU's transmission bandwidth field is 20MHz, 40MHz, or 80MHz, then the center frequency of the adjacent channel is located at a distance of W WHz from the center frequency of the current PPDU's transmission channel, where W is the current PPDU's transmission bandwidth.

[0296] The second information is the adjacent channel transmission restriction information and the adjacent alternative channel transmission restriction information.

[0297] ACTR information includes restrictions on adjacent channel transmissions during the current PPDU transmission or during the TXOP (e.g., the TXOP duration is indicated by the Duration field); AACTR information includes restrictions on alternative adjacent channel transmissions during the current PPDU transmission or during the TXOP.

[0298] ACTR and ACTR information can be carried in the PPDU, or through the PPDU preamble, or through the fields of the frame carried by the PPDU.

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

[0300] Transmission restriction information for adjacent channels and adjacent alternative channels based on PPDU (PPDU Level):

[0301] Allow and Unrestricted ACT (ACT_ALLOW_AND_NOT_RESTRICTED): During the current PPDU transmission or during the TXOP in which the current PPDU is located, transmission in the corresponding channel in the adjacent channel based on the transmission bandwidth of the current PPDU is allowed and unrestricted.

[0302] PPDU-level disallowed ACT (ACT_DISALLOW_FOR_PPDU_LEVEL): During the current PPDU transmission, transmission of the corresponding channel in adjacent channels based on the current PPDU transmission bandwidth is not allowed (or is not recommended); or, if there is a specific PD threshold based on adjacent channel transmission restrictions (such as NPCAACT PD Max), it means that during the current PPDU transmission, if the received signal strength level of the current PPDU received by the OBSS site is greater than the specific PD threshold, then transmission of the corresponding channel in adjacent channels based on the current PPDU transmission bandwidth is not allowed (or is not recommended), or the transmission of the corresponding channel is punctured.

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

[0304] Restrict ACT to PPDU until PPDU ends (ACT_RESTRICTED_AND_BEFORE_END_OF_PPDU): During the current PPDU transmission, transmission in the corresponding channel of the adjacent channel based on the PPDU transmission bandwidth is only allowed before the end of the current PPDU.

[0305] Delay ACT (ACT_DELAYED): During the current PPDU transmission, delay the transmission of adjacent channels based on the PPDU transmission bandwidth. That is, transmission of the corresponding channel in the adjacent channels based on the PPDU transmission bandwidth is only allowed after the current PPDU transmission ends.

[0306] Delay ACT and AACT (ACT_AND_AACT_DELAYED): During the current PPDU transmission, delay the transmission of adjacent channels and alternative adjacent channels based on the PPDU transmission bandwidth. That is, transmission of the corresponding channel in the adjacent channels and alternative adjacent channels based on the PPDU transmission bandwidth is only allowed after the current PPDU transmission ends.

[0307] Transmission restriction information for adjacent channels and adjacent alternative channels based on TXOP (TXOP Level)

[0308] ACT_ALLOW_AND_NOT_RESTRICTED: During the current PPDU transmission or during the TXOP in which the current PPDU is located, transmission in the corresponding channel in the adjacent channel based on the current PPDU transmission bandwidth is permitted and unrestricted;

[0309] TXOP-level disallowed ACT (ACT_DISALLOW_FOR_TXOP_LEVEL): During the TXOP of the current PPDU, transmission in the corresponding channel of the adjacent channel based on the PPDU's transmission bandwidth is not allowed (or is not recommended), or the transmission in the corresponding channel is punctured; or, if there is a specific PD threshold based on adjacent channel transmission restrictions (such as NPCAACT PD Max), it means that during the TXOP of the current PPDU, if the received signal strength level of the current PPDU received by the OBSS site is greater than the specific PD threshold, then transmission in the corresponding channel of the adjacent channel based on the current PPDU's transmission bandwidth is not allowed (or is not recommended), or the transmission in the corresponding channel is punctured.

[0310] TXOP level disallowed (ACT and AACT (ACT_AND_AACT_DISALLOW_FOR_TXOP_LEVEL): During the TXOP of the current PPDU, transmission on the corresponding channel in adjacent channels and alternative adjacent channels based on the PPDU transmission bandwidth is not allowed (or is not recommended), or the transmission on the corresponding channel is punctured; or, if there is a specific PD threshold based on adjacent channel transmission restrictions (e.g., NPCAACT PD Max), it means that during the TXOP of the current PPDU, if the received signal strength level of the current PPDU received by the OBSS site is greater than the specific PD threshold, then transmission on the corresponding channel in adjacent channels and alternative adjacent channels based on the current PPDU transmission bandwidth is not allowed (or is not recommended), or the transmission on the corresponding channel is punctured.

[0311] For the first information, namely the adjacent channel transmission requirements and strategy information and / or the alternative adjacent channel transmission requirements and strategy information

[0312] The site intending to initiate an NPCA operation determines whether to initiate an NPCA operation based on the adjacent channel transmission requirements and policy information and / or alternative adjacent channel transmission requirements and policy information published by the AP of its BSS, and / or the adjacent channel transmission restriction information and / or alternative adjacent channel transmission restriction information carried in the OBSS PPDU (Note: the BSS of the site sending the PPDU is the OBSS of the BSS of the site intending to initiate the NPCA operation, and the PPDU is an OBSS PPDU or an inter-BSS PPDU). It also determines the relevant parameters of the NPCA operation (including which secondary channels are used as the NPCA operation channel for transmission, the bandwidth of the NPCA operation channel, the TXOP or frame exchange sequence duration of the NPCA operation, etc.), and transmits using the determined parameters during the NPCA operation. Specifically, the site intending to initiate an NPCA operation initiates (or performs) transmission on all or part of the adjacent channels that restrict the transmission bandwidth through the OBSS PPDU under given conditions, wherein the given conditions include one or more of the following:

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

[0314] The OBSS PPDU received by the site originates from one or more OBSS identification messages published by the AP associated with the site, which have specific requirements for restricted adjacent channel transmission. The OBSS identification messages may be indicated by the NPCABSS Color Bitmap field and / or the NPCA Partial BSSID Bitmap field in the NPCA parameter set element carried by the AP in the beacon frame or management frame.

[0315] One or more sub-channels in adjacent channels correspond to the sub-channels in the "Disallowed Sub-channel Bitmap" field that are indicated as "Transmission is not allowed"; that is, the value of the bit in the "Disallowed Sub-channel Bitmap" corresponding to one or more sub-channels in adjacent channels is set to 1.

[0316] The NPCA field carried by the OBSS PPDU indicates the adjacent channel transmission restriction information. In particular, when the adjacent channel transmission policy information published by the AP associated with the site indicates that the transmission restriction requirements indicated by the NPCA field of the OBSS PPDU must be followed, that is, the OBSS PPDU SIG NPCA mandatory field carried by the NPCA parameter set element indicates 1.

[0317] In this embodiment of the application, the behavior and rules for a site intending to initiate NPCA operations to restrict transmission through all or part of the adjacent channels in the OBSS PPDU transmission bandwidth include the following:

[0318] 1. When the NPCA operation to be initiated by the site corresponds to the NPCA primary channel and / or NPCA secondary channel, which are located on the adjacent channel of the OBSS PPDU, and the adjacent channel transmission requirements and policy information and / or adjacent channel transmission restriction information indicate that adjacent channel transmission based on the OBSS PPDU transmission bandwidth is permitted and unrestricted, the site may initiate the NPCA operation on the corresponding NPCA primary channel and / or secondary channel during the current OBSS PPDU transmission, and the operation is not subject to the adjacent channel transmission restriction.

[0319] 2. When the NPCA main channel corresponding to the NPCA operation to be initiated by the station is located in the corresponding channel of the adjacent channel of the OBSS PPDU, and the adjacent channel transmission requirements and policy information and / or adjacent channel transmission restriction information indicate that the corresponding channel in the adjacent channel is not allowed to initiate or transmit, then the station will not initiate transmission on the NPCA main channel during the current PPDU transmission period. This includes the station not switching to the NPCA main channel during the current OBSS PPDU transmission period, or the station switching to the NPCA main channel after recognizing the OBSS PPDU, and not initiating transmission or delaying transmission if it wins the TXOP during the current PPDU transmission period.

[0320] 3. When the NPCA primary channel and NPCA secondary channel corresponding to 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 requirements and policy information and / or adjacent channel transmission restriction information indicate that initiation or transmission is allowed on the primary channel but not on the corresponding secondary channel (or the transmission on the corresponding secondary channel is punctured), then the station may initiate 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. This includes the station switching to the NPCA primary channel to compete for TXOP and initiate transmission during the current OBSS PPDU transmission, but not competing for TXOP or initiating transmission on the corresponding secondary channel, or the transmission on the corresponding secondary channel is punctured.

[0321] 4. When the NPCA operation to be initiated by the station corresponds to the NPCA primary channel and / or NPCA secondary channel located on the adjacent channel of the OBSS PPDU, and the adjacent channel transmission requirements and policy information and / or adjacent channel transmission restriction information indicate that during the current PPDU transmission period, adjacent channel transmission based on the PPDU transmission bandwidth is only allowed before the end of the current PPDU, then: when the station switches to the NPCA primary channel and / or NPCA secondary channel during the current PPDU transmission period and competes for TXOP or initiates 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] The following explanation uses the example of ACT and AACT information located in the preamble of the PPDU to illustrate the transmission of ACT and AACT information.

[0323] The PPDU preamble can define an NPCA field to carry transmission restriction information for NPCA operations on all or some of the adjacent and / or alternative adjacent channels. In other words, it specifies the restrictions on NPCA operations initiating transmission on all or some of the adjacent and / or alternative adjacent channels based on the current PPDU transmission bandwidth. For example, the NPCA field can be defined in the UHR SIG, and the NPCA field can take one of the following two forms:

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

[0325] 2) The four NPCA fields and the optional received signal strength threshold field define the transmission limits for a portion of the channels in the entire adjacent channel, as shown in Table 2.

[0326] Table 1. Examples of NPCA fields in PPDU preambles

[0327] Table 1. Examples of NPCA fields in PPDU preambles

[0328] Table 3: Examples of NPCA Field Encoding

[0329] NPCA parameter set element definition

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

[0331] As shown in Figure 7, the NPCA parameter set element includes the following fields: a 1-byte element identifier, a 1-byte length, a 1-byte element identifier extension, a 4-byte NPCA control field, a 0 or 1-byte NPCA PD minimum offset, a 0 or 1-byte NPCA PD maximum offset, a 0 or 1-byte NPCA ACT PD maximum offset, a 0 or 1-byte ACT channel bitmap, a 0 or 8-byte NPCABSS color bitmap, a 0 or 8-byte NPCA partial BSSID bitmap, and a 0 or 2-byte 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 indicates the length of the NPCA parameter set element.

[0332] The format of the NPCA control field is shown in Figure 8, and includes the following subfields:

[0333] 1 bit for NPCA Disallowed, 4 bits for NPCA main channel, 16 bits for NPCA operation channel bitmap, 1 bit for ACT Disallowed, 1 bit for AACT Disallowed, 1 bit for NPCABSS presence information, 1 bit for PPDU SIG NPCA Allowed, 1 bit for OBSS PPDU SIG NPCA Forced, 1 bit for ACT channel bitmap presence, and 1 bit for disallowed sub-channel bitmap presence.

[0334] The "NPCA Not Allowed" field indicates whether NPCA operations are permitted for non-AP STAs associated with the AP that sent this NPCA parameter element. When the "NPCA Not Allowed" subfield is 1, NPCA operations or NPCA-based transmissions are not allowed. When the "NPCA Not Allowed" subfield is 0, NPCA operations or NPCA-based transmissions are allowed.

[0335] The NPCA main channel indicates which channel within the bandwidth occupied by the BSS is the NPCA main channel. Its coded value can be the sub-channel number corresponding to the NPCA main channel. Among them, the coded value of the 20MHz sub-channel with the lowest frequency in the channel set within the bandwidth occupied by the BSS is 0, and each incrementing value corresponds to the next higher frequency 20MHz sub-channel.

[0336] The NPCA Operation Channel Bitmap indicates which channels within the BSS bandwidth are designated as NPCA operation channels. The lowest-numbered bit corresponds to the lowest-frequency 20MHz sub-channel in the set of all 20MHz sub-channels within the BSS bandwidth. Each consecutive bit in the bitmap corresponds to the next higher-frequency 20MHz sub-channel. A bit set to 1 indicates that the corresponding 20MHz channel is an NPCA operation channel, while a bit set to 0 indicates that the corresponding 20MHz channel is not an NPCA operation channel.

[0337] The "Not Allowed" ACT field indicates whether, under given conditions (if any), a non-AP STA associated with the AP sending this element is permitted to initiate (or perform) transmissions through all or part of the adjacent channels within the OBSS PPDU transmission bandwidth. When the "Not Allowed" ACT subfield is 1, it indicates that the given conditions disallow transmissions through all or part of the adjacent channels within the OBSS PPDU transmission bandwidth. When the "Not Allowed" ACT subfield is 0, it indicates that there are no adjacent channel transmission restrictions within the OBSS PPDU transmission bandwidth. The given conditions must satisfy one or more of the following:

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

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

[0340] 3) One or more sub-channels in the adjacent channels correspond to the sub-channels in the "Disallowed Sub-channel Bitmap" field that are indicated as "Transmission is not allowed to be initiated (or performed)," that is, the value of the bit in the "Disallowed Sub-channel Bitmap" corresponding to one or more sub-channels in the adjacent channels is set to 1;

[0341] 4) When the NPCA forced field indicator of the OBSS PPDU SIG is 1, the NPCA field carried by the OBSS PPDU that is to trigger the NPCA operation indicates 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 ACT channel bitmap field (if any) contains a corresponding channel that is indicated as "transmission not allowed" in an adjacent channel.

[0343] The "Disallowed AACT" option indicates whether, under given conditions (if any), a non-AP STA associated with the AP sending this element is allowed to initiate (or perform) transmissions through all or some of the alternative adjacent channels in the OBSS PPDU transmission bandwidth. When the "Disallowed AACT" subfield is 1, it indicates that, under given conditions, initiating (or performing) transmissions through all or some of the alternative adjacent channels in the OBSS PPDU transmission bandwidth is not allowed.

[0344] Does NPCABSS information exist, which indicates whether the NPCA parameter set element carries an NPCABSS color bitmap and / or an NPCA preference BSSID bitmap?

[0345] The PPDU SIG NPCAAllowed subfield indicates whether a non-AP site associated with the AP sending 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. Specifically, a PPDU SIG NPCA Allowed subfield value of 1 indicates that a non-AP site associated with the AP sending 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, a PPDU SIG NPCA Allowed subfield value of 0.

[0346] The OBSS PPDU SIG NPCA Mandatory subfield indicates whether a non-AP STA associated with the AP sending this element is required to comply with all or some of the transmission restrictions indicated by the NPCA field in the OBSS PPDU when performing NPCA operations. When the OBSS PPDU SIG NPCA Mandatory subfield is 1, the transmission restriction requirements indicated by the NPCA field in the OBSS PPDU are enforced; when the OBSS PPDU SIG NPCA Mandatory subfield is 0, the transmission restriction requirements indicated by the NPCA field are used as a reference in the specific implementation.

[0347] The ACT channel bitmap presence subfield indicates whether an NPCA parameter set element has an ACT channel bitmap subfield. A value of 1 indicates that the NPCA parameter set element has an ACT channel bitmap subfield, while a value of 0 indicates that the NPCA parameter set element does not have an ACT channel bitmap subfield.

[0348] The "Disallowed Sub-channel Bitmap Existence" field indicates whether the NPCA parameter set element has a "Disallowed Sub-channel Bitmap Existence" field. When the value of the "Disallowed Sub-channel Bitmap Existence" field is 1, it indicates that the NPCA parameter set element has a "Disallowed Sub-channel Bitmap Existence" field. When the value of the "Disallowed Sub-channel Bitmap Existence" field is 0, it indicates that the NPCA parameter set element does not have a "Disallowed Sub-channel Bitmap Existence" field.

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

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

[0351] The NPCAACT PD Max Offset field contains an unsigned integer, which, when added to -82dBm, generates the NPCAACT PD Max parameter, representing the maximum PD value for adjacent channel transmission via NPCA operation. When the received signal strength level or RSSI level of the OBSS PPDU received by the site exceeds the indicated NPCA PD Max value, adjacent channel transmission bandwidth limitations apply to the OBSS PPDU transmission; see the definition of the Disallowed ACT field.

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

[0353] The NPCABSS Color Bitmap field is a bitmap representing the BSS color values ​​used by members of the NPCA group to which the sending STA belongs. Each bit in the 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 the corresponding bit in the bitmap is 1, at least one BSS uses the BSS color value, and that BSS is a member of the same NPCA as the sending STA. If a bit in the bitmap is 0, no BSS in the same NPCA group as the sending STA uses the corresponding BSS color value. The bit in the bitmap corresponding to BSS color value 0 is reserved.

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

[0355] The lowest-numbered bit in the disallowed subchannel bitmap field corresponds to the lowest-frequency 20MHz subchannel in the set of all 20MHz subchannels within the BSS bandwidth. Each consecutive bit in the bitmap corresponds to the next higher-frequency 20MHz subchannel. A bit in the bitmap set to 1 indicates that the 20MHz channel corresponding to that bit position is not allowed to initiate (or perform) transmission, or that the transmission of the 20MHz channel corresponding to that bit position is punctured; a bit in the bitmap set to 0 indicates that there are no restrictions on initiating (or performing) transmission on the 20MHz channel corresponding to that bit position.

[0356] The wireless communication methods provided in this application include, but are not limited to, the following embodiments one to four.

[0357] Example 1

[0358] As shown in Figure 9, in a BSS (designated BSS1), the operating bandwidth is 80MHz. The APs and sites of BSS1 support NPCA operation, where the NPCA primary channel is located on the third 20MHz secondary channel, and the NPCA secondary channels can include the first and second 20MHz secondary channels. Furthermore, there exists another BSS (designated BSS2), which is the OBSS of BSS1 and also uses the same primary channel as that BSS.

[0359] APs supporting NPCA operation, i.e., AP1 of BSS1, can carry NPCA parameter set elements in their transmitted beacon frames, indicating the transmission requirements and policy information for adjacent channels (and / or alternative adjacent channels). Specifically, the NPCA Disallowed subfield is set to 0, indicating that NPCA operation is allowed. The NPCAACT PD Max Offset field is 6, indicating that the NPCAACT PD Max parameter value for adjacent channel transmission is ((-82+6)=-76dBm). This also means that when the received signal strength level or RSSI level of the OBSS PPDU received by the BSS1 site is greater than the indicated NPCA PD Max value (-76dBm), there is an adjacent channel transmission limitation on the OBSS PPDU transmission bandwidth. At the same time, the OBSS PPDU SIG NPCA mandatory subfield is set to 1, indicating that when the received signal strength level or RSSI level of the OBSS PPDU received by the site is greater than the maximum PD value of the adjacent channel transmission indicated by the NPCA field, the transmission restriction requirements indicated by the OBSS PPDU are enforced.

[0360] Assuming that AP2 of BSS2 wins the TXOP and the channel it wins covers the main channel of BSS1, AP2 of BSS2 sends an ICF to STA2 of BSS2 associated with AP2 on the main channel. After receiving the ICF, STA2 of BSS2 sends an IR frame to AP2 of BSS2 as a response to the ICF. After receiving the IR, AP2 of BSS2 sends a PPDU (with a transmission bandwidth of 20MHz, and the corresponding adjacent channel is the first secondary channel of BSS1) to STA2 of BSS2. At the same time, the NPCA field of the preamble of its PPDU indicates "ACT_DISALLOW_FOR_PPDU_LEVEL", which means that during the current PPDU transmission, if the received signal strength level of the current PPDU received by the OBSS site is greater than this specific PD threshold, then it is not allowed (or not recommended) to initiate the transmission of the corresponding channel in the adjacent channel based on the current PPDU transmission bandwidth.

[0361] After an AP or STA of BSS1 detects the OBSS PPDU, and based on the adjacent channel (and / or alternative adjacent channel) transmission restriction information carried by it, the AP or station of BSS1 may initiate transmission on the NPCA primary channel and the second channel of BSS1 during the current OBSS PPDU transmission, but may not initiate or perform transmission on the second channel of BSS1. This includes the station switching to the NPCA primary channel and the second channel of BSS1 to compete for TXOP and initiate transmission during the current OBSS PPDU transmission, but not competing for TXOP or initiating transmission on the first channel of BSS1.

[0362] As shown in Figure 9, after AP1 of BSS1 switches to the NPCA primary channel or NPCA operational channel, and after competing for the TXOP on the NPCA primary channel (i.e., the third secondary channel of BSS1) and the secondary channel (i.e., the second secondary channel of BSS1), it exchanges frames with its associated STA on the NPCA primary channel and the second secondary channel of BSS1. Specifically, AP1 of BSS1 sends an ICF to the STA of BSS1, and the STA of BSS1, upon receiving the ICF, sends an IR frame to AP1 of BSS1 as a response to the ICF. After receiving the IR frame, AP1 of BSS1 transmits a data PPDU on the NPCA primary channel and the second secondary channel.

[0363] Example 2

[0364] As shown in Figure 10, in a BSS (designated BSS1), the operating bandwidth is 120MHz. The APs and sites of this BSS support NPCA operation. The NPCA primary channel is located on the 5th 20MHz secondary channel, and the NPCA secondary channels can include the 1st, 2nd, 3rd, and 4th 20MHz secondary channels. Furthermore, there exists another BSS (designated BSS2), which is the OBSS of this BSS (i.e., BSS1).

[0365] APs supporting NPCA operation can include NPCA parameter set elements in their transmitted beacon frames, indicating the transmission requirements and policy information for adjacent channels (and / or alternative adjacent channels). Specifically, the NPCA Disallowed subfield is set to 0, indicating that NPCA operation is permitted. The NPCAACT PD Max Offset field is 6, indicating that the NPCAACT PD Max parameter is ((-82+6)=-76dBm). This also means that when the received signal strength level or RSSI level of the OBSS PPDU received by the BSS2 site is greater than the indicated NPCA PD Max value (-76dBm), there is an adjacent channel transmission limitation on the OBSS PPDU transmission bandwidth. In the ACT channel bitmap, a bit with a value of 0 corresponding to the 20MHz subband closest to the PPDU bandwidth in adjacent channels indicates that transmission of the 20MHz subband closest to the PPDU bandwidth in adjacent channels is not allowed. A value of 1 for the corresponding bit in other positions in the bitmap indicates that transmission of other adjacent channels is allowed. The NPCABSS color bitmap field and / or the NPA Partial BSSID bitmap field indicate that BSS2 is a BSS belonging to the same NPA group as the sending STA, meaning that the received OBSS PPDU originated from BSS2.

[0366] Assuming AP2 in BSS2 wins the TXOP and the channel it wins covers the main channel of BSS1, AP2 sends an ICF to STA2, which is associated with AP2 in BSS2. Then, STA2 sends an IR frame to AP2 as a response to the ICF. After receiving the IR, AP2 sends a PPDU to STA2 (with a transmission bandwidth of 20MHz, the corresponding adjacent channel is the first 20MHz secondary channel of BSS1, and the alternative adjacent channel is the second 20MHz secondary channel of BSS1). At the same time, the preamble of the PPDU indicates that its color is the color value corresponding to BSS2, or the information carried by the PPDU indicates that the BSS of the station that sent the PPDU is located is the BSSID of BSS2.

[0367] If an AP or STA in BSS1 receives or detects ICF / IR control frame exchange from BSS2, and simultaneously receives or detects an OBSS PPDU after the ICF / IR control frame exchange, and detects a received signal strength level greater than -76dBm, and the length or duration information carried by the PPDU meets the duration condition for triggering NPCA operation, then according to the adjacent channel transmission requirements and policy information published by AP1 (i.e., indicating that if an OBSS PPDU from BSS2 is received and its received signal strength level is greater than -76dBm, then transmission in the 20MHz subband closest to the OBSS PPDU's transmission bandwidth in the adjacent channel is not allowed), then the AP or STA may initiate transmission on the NPCA primary and secondary channels (i.e., the 2nd, 3rd, and 4th channels of BSS1) during the current OBSS PPDU transmission, but not on the 1st channel of BSS1. This includes the station's transmission on the current OBSS PPDU. During PPDU transmission, it switches to the NPCA main channel and the 2nd, 3rd and 4th channels of BSS1 to compete for TXOP and initiate 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 Figure 10, after the BSS1 AP switches to the NPCA primary channel or NPCA operation channel, and after competing for the TXOP on the NPCA primary channel (i.e., the 5th secondary channel of BSS1) and the secondary channels (i.e., the 2nd, 3rd, and 4th secondary channels of BSS1), it performs frame exchange with its associated STA, where the STA also supports NPCA operation. Specifically, the BSS1 AP first sends an ICF to the BSS1 STA, and upon receiving the ICF, the BSS1 STA sends an IR frame to the BSS1 AP as a response to the ICF. After receiving the IR frame, the BSS1 AP transmits data PPDUs on the NPCA primary channel and the 2nd, 3rd, and 4th secondary channels.

[0369] Example 3

[0370] As shown in Figure 11, in a BSS (designated BSS1), the operating bandwidth is 120MHz. The APs and sites of this BSS support NPCA operation. The NPCA primary channel is located on the 5th 20MHz secondary channel, and the NPCA secondary channels can include the 1st, 2nd, 3rd, and 4th 20MHz secondary channels. Furthermore, there are two other BSSs (designated BSS2 and BSS3), both of which are OBSSs of this BSS.

[0371] APs supporting NPCA operations can include NPCA parameter set elements in their transmitted beacon frames, indicating adjacent channel (and / or alternative adjacent channel) transmission requirements and policy information. Specifically, the NPCA Disallowed subfield is set to 0, indicating that NPCA operation is permitted. The NPCABSS color bitmap field and / or the NPCA Partial BSSID bitmap field indicate that BSS3 is a BSS belonging to the same NPCA group as the sending STA, meaning the received OBSS PPDU originates from BSS3. Simultaneously, for BSS3 (i.e., OBSS PPDUs originating from BSS3), the "Disallowed Subchannel Bitmap" subfield indicates that transmissions are not permitted on the 1st, 2nd, and 3rd 20MHz channels of BSS1. For OBSS PPDUs from other OBSSs (BSS2), NPCA operation has no adjacent channel transmission restrictions.

[0372] Assuming the AP in BSS2 wins the TXOP and the channel it wins covers the main channel and the first secondary channel of BSS1, the AP in BSS2 sends a PPDU (with a transmission bandwidth of 40MHz, and the corresponding adjacent channels are the second and third 20MHz secondary channels of BSS1) to its associated STA in BSS2. Simultaneously, the preamble of the PPDU indicates that its color is the color value corresponding to BSS2, or the information carried by the PPDU indicates that the BSS of the station sending the PPDU is identified as the BSSID of BSS2. After the AP or STA in BSS1 detects or receives this OBSS PPDU, if the length or duration information carried by the PPDU (i.e., OBSS PPDU1) meets the duration condition for triggering NPCA operation, and since there are no adjacent channel transmission restrictions for NPCA operations from OBSS PPDUs from BSS2, it can directly compete for the TXOP on the NPCA operation channels (i.e., the second, third, fourth, and fifth secondary channels of BSS1), and after frame switching, it falls back to the main channel and response operation channel of BSS1.

[0373] As shown in Figure 11, after the AP of BSS1 switches to the NPCA primary channel and the NPCA secondary channel, it competes for the TXOP on the NPCA primary channel (the 5th channel of BSS1) and the NPCA secondary channels (the 2nd, 3rd, and 4th channels). The AP and STA of BSS1 then perform frame exchange on the NPCA primary channel and the NPCA secondary channels (i.e., the 2nd, 3rd, 4th, and 5th secondary channels of BSS1). Specifically, the AP of BSS1 sends an ICF to the STA of BSS1, and after receiving the ICF, the STA of BSS1 sends an IR frame to the AP of BSS1 in response. After receiving the IR frame, the AP of BSS1 sends a PPDU to the STA of BSS2.

[0374] When an AP or STA on BSS1 receives an OBSS PPDU from BSS3 and detects a received signal strength level greater than -76dBm, and the length or duration information carried by the PPDU meets the duration condition for triggering NPCA operation, it switches to the NPCA main channel. Based on the adjacent channel transmission requirements and policy information published by AP1 (i.e., indicating that if an OBSS PPDU from BSS3 is received and its received signal strength level is greater than -76dBm, then according to the "Disallowed Subchannel Bitmap" subfield, transmissions are not allowed to be initiated (or performed) on the 1st, 2nd, and 3rd 20MHz channels of BSS1), the AP or STA can initiate transmissions on the NPCA main channel and the 4th and 5th channels of BSS1 during the current OBSS PPDU (OBSS PPDU2) transmission, but not on the 2nd and 3rd channels of BSS1, including the OBSS PPDU ... During PPDU2 transmission, it switches to the NPCA main channel and the 4th channel of BSS1 to compete for TXOP and initiate transmission, 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 Figure 11, after the AP of BSS1 switches to the NPCA main channel and the NPCA operation channel, it competes for the TXOP on the NPCA main channel (the 6th channel of BSS1) and the NPCA auxiliary channel (i.e., the 4th channel). The AP of BSS1 then performs frame exchange on the NPCA main channel and the 4th channel of BSS1. Specifically, the AP of BSS1 sends an ICF to the STA of BSS1, and after receiving the ICF, the STA of BSS1 sends an IR frame to the AP of BSS1. After receiving the IR frame, the AP of BSS1 sends a PPDU to the STA of BSS2.

[0376] The preferred embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the specific details of the above embodiments. Within the scope of the technical concept of this application, various simple modifications can be made to the technical solutions of this application, and these simple modifications all fall within the protection scope of this application. For example, the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. To avoid unnecessary repetition, this application will not describe the various possible combinations separately. Furthermore, various different embodiments of this application can also be arbitrarily combined, as long as they do not violate the spirit of this application, they should also be considered as the content disclosed in this application. Moreover, without conflict, the various embodiments and / or the technical features in the various embodiments described in this application can be arbitrarily combined with the prior art, and the resulting technical solutions should also fall within the protection scope of this application.

[0377] It should also be understood that in the various method embodiments of this application, the sequence number of each process does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application. Furthermore, in the embodiments of this application, the terms "downlink," "uplink," and "sidelink" are used to indicate the transmission direction of signals or data. "Downlink" indicates that the transmission direction of signals or data is a first direction from the site to the user equipment in the cell; "uplink" indicates that the transmission direction of signals or data is a second direction from the user equipment in the cell to the site; and "sidelink" indicates that the transmission direction of signals or data is a third direction from user equipment 1 to user equipment 2. For example, "downlink signal" indicates that the transmission direction of the signal is the first direction. Additionally, in the embodiments of this application, the term "and / or" is merely a description of the association relationship between related objects, indicating that three relationships can exist. Specifically, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Furthermore, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0378] Figure 12 is a schematic diagram of the structure of the first STA provided in an embodiment of this application. As shown in Figure 12, the first STA 1200 includes:

[0379] Control unit 1201 is configured to control the non-main channel access NPCA operation of the first station STA based on first information and / or second information;

[0380] The first information is the NPCA operation parameter information configured in the first basic service set BSS, where the first BSS is the BSS where the first STA is located;

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

[0382] The second BSS is the 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 when an OBSS PPDU is detected.

[0384] In some embodiments, the control unit 1201 is further configured to determine, based on the first channel control information included in the first information, whether the first STA initiates or performs transmission on all or some of the sub-channels in the adjacent channels and / or alternative adjacent channels based on the OBSS PPDU transmission bandwidth when the NPCA operation channel of the first BSS includes all or some of the sub-channels in the adjacent channels and / or alternative adjacent channels based on the OBSS PPDU transmission bandwidth.

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

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

[0387] The first bitmap is used to indicate whether transmission of the corresponding sub-channel in the adjacent channel and / or alternative adjacent channel based on the OBSS PPDU transmission bandwidth is permitted.

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

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

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

[0391] The second BSS and the first BSS are BSSs in the same NPCA group; the first STA is not forced to follow the second information; the power of the first STA performing NPCA operation is within the first power range.

[0392] In some embodiments, the first information further includes first condition information, which is used to determine whether the first STA satisfies the first condition. The first condition information includes one or more of the following:

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

[0394] The second bitmap is used to indicate, through color values, the BSS that belongs to the same NPA group as the first BSS among the multiple BSSs;

[0395] The third bitmap is used to indicate, through a portion of the BSSID, a BSS that belongs to the same NPA group as the first BSS among a plurality of BSSs;

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

[0397] The first instruction information is used to indicate whether the second information is mandatory.

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

[0399] In some embodiments, the control unit 1201 is further configured to, when the NPCA operation channel of the first BSS includes all or some of the sub-channels in the adjacent channels and / or alternative adjacent channels based on the OBSS PPDU transmission bandwidth, determine, based on the second channel control information included in the second information, whether the first STA initiates or performs transmission on all or some of the sub-channels in the adjacent channels and / or alternative adjacent channels based on the OBSS PPDU transmission bandwidth; the second channel control information is used to indicate the transmission restrictions of all or some of the sub-channels in the adjacent channels and / or alternative adjacent channels based on the OBSS PPDU transmission bandwidth.

[0400] In some embodiments, the second channel control information includes: first transmission indication information, which indicates the transmission restriction method of adjacent channels based on the OBSS PPDU transmission bandwidth.

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

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

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

[0404] The first transmission mode is that during OBSS PPDU transmission, the transmission of corresponding sub-channels in adjacent channels based on the OBSS PPDU transmission bandwidth is allowed and unrestricted.

[0405] The second transmission mode is that during OBSS PPDU transmission, the transmission of corresponding sub-channels in adjacent channels based on the OBSS PPDU transmission bandwidth is not allowed.

[0406] The third transmission mode is that during OBSS PPDU transmission, the transmission of corresponding sub-channels in adjacent channels and alternative adjacent channels based on the OBSS PPDU transmission bandwidth is not allowed.

[0407] The fourth transmission mode is that during the OBSS PPDU transmission, the transmission of the corresponding sub-channel in the adjacent channel based on the OBSS PPDU transmission bandwidth is allowed before the end of the OBSS PPDU;

[0408] The fifth transmission mode is to delay the transmission of the corresponding sub-channel in the adjacent channel based on the OBSS PPDU transmission bandwidth during OBSS PPDU transmission;

[0409] The sixth transmission mode is to delay the transmission of the corresponding sub-channels in the adjacent channels and alternative adjacent channels based on the OBSS PPDU transmission bandwidth during OBSS PPDU transmission.

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

[0411] The seventh transmission mode is that during the TXOP period where the OBSS PPDU is located, the transmission of the corresponding sub-channel in the adjacent channel based on the transmission bandwidth of the OBSS PPDU is allowed and unrestricted;

[0412] The eighth transmission mode is that during the TXOP period where the OBSS PPDU is located, the transmission of the corresponding sub-channel in the adjacent channel based on the transmission bandwidth of the OBSS PPDU is not allowed.

[0413] The ninth transmission mode is that during the TXOP period where the OBSS PPDU is located, transmission of the corresponding sub-channels in the adjacent channels and alternative adjacent channels based on the transmission bandwidth of the OBSS PPDU is not allowed.

[0414] In some embodiments, the control unit 1201 is further configured to, upon determining that the first STA satisfies the second condition, determine, based on the second channel control information, whether to transmit on all or part of the sub-channels in the adjacent channels and / or alternative adjacent channels based on the OBSS PPDU transmission bandwidth.

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

[0416] In some embodiments, the second information further includes: second condition information, which is used to determine whether the first STA satisfies the second condition; the second condition information includes: a second PD value, which is used to indicate the second PD threshold.

[0417] In some embodiments, the first information further includes: NPCA control information, which is used to indicate control parameters related to the operation of the NPCA.

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

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

[0420] The third indication information is used to indicate the NPCA main channel;

[0421] The fourth indication information is used to indicate the NPCA operation channel;

[0422] 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 channels or sub-channels in the adjacent channels and / or alternative adjacent channels based on the OBSS PPDU transmission bandwidth.

[0423] The fourth bitmap is used to indicate whether transmission of a subchannel at a corresponding position in the subchannels included in the first BSS bandwidth is not allowed.

[0424] 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 channels based on the OBSS PPDU transmission bandwidth, provided that the first condition or the second condition is met.

[0425] In some embodiments, the NPCA control information further includes: a sixth indication information, which is used to indicate the transmission restriction method of the NPCA operation triggered by the PPDU transmitted by the first STA.

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

[0427] Based on the first information and / or the second information, determine whether to switch from the main channel of the first BSS to the main channel of the NPCA;

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

[0429] The NPCA operation parameters are determined based on the first information and / or the second information when initiating an NPCA operation.

[0430] In some embodiments, the NPCA operating parameters include one or more of the following:

[0431] The first parameter is used to indicate the channel for NPCA-based transmission;

[0432] The second parameter indicates the bandwidth of the NPCA operation channel;

[0433] The third parameter is used to indicate the transmission opportunity or frame exchange sequence duration of the NPCA.

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

[0435] In some embodiments, the conditions that trigger a switch to the NPCA primary channel and / or the NPCA secondary channel include:

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

[0437] An OBSS PPDU is detected, and / or the transmission duration of the OBSS PPDU or the duration of the 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 site (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, when the first STA is a first Non-AP STA, the first STA 1200 further includes: 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 description of the wireless communication device in the embodiments of this application can be understood with reference to the description of the wireless communication method in the embodiments of this application.

[0442] Figure 13 is a schematic structural diagram of a communication device 1300 provided in an embodiment of this application. This communication device may be a first STA. The communication device 1300 shown in Figure 13 includes a processor 1310, which can call and run computer programs from memory to implement the methods in the embodiments of this application.

[0443] Optionally, as shown in FIG13, the communication device 1300 may further include a memory 1320. The processor 1310 may retrieve and run computer programs from the memory 1320 to implement the methods described in the embodiments of this application.

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

[0445] Optionally, as shown in FIG13, the communication device 1300 may further include a transceiver 1330, and the processor 1310 may control the transceiver 1330 to communicate with other devices. Specifically, it may send information or data to other devices or receive information or data sent by other devices.

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

[0447] Optionally, the communication device 1300 may specifically be the first STA in the embodiments of this application, and the communication device 1300 may implement the corresponding processes implemented by the first STA in the various methods of the embodiments of this application. For the sake of brevity, it will not be described in detail here.

[0448] Figure 14 is a schematic structural diagram of a chip according to an embodiment of this application. The chip 1400 shown in Figure 14 includes a processor 1410, which can call and run computer programs from memory to implement the methods in the embodiments of this application.

[0449] Optionally, as shown in FIG14, chip 1400 may further include memory 1420. Processor 1410 may retrieve and run computer programs from memory 1420 to implement the methods in the embodiments of this application.

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

[0451] Optionally, the chip 1400 may also include an input interface 1430. The processor 1410 can control the input interface 1430 to communicate with other devices or chips; specifically, it can acquire information or data sent by other devices or chips.

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

[0453] Optionally, the chip can be applied to the first STA in the embodiments of this application, and the chip can implement the corresponding processes implemented by the first STA in the various methods of the embodiments of this application. For the sake of brevity, it will not be described in detail here.

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

[0455] Figure 15 is a schematic block diagram of a communication system 1500 provided in an embodiment of this application. As shown in Figure 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 non-access point device 1520 (AP) can be used to implement the corresponding functions performed by the first STA in the above method. For the sake of brevity, further details are omitted here.

[0457] It should be understood that the processor in the embodiments of this application may be an integrated circuit chip with signal processing capabilities. In implementation, the steps of the above method embodiments can be completed by integrated logic circuits in the processor's hardware or by instructions in software form. The processor described above can be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. It can implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of this application. The general-purpose processor can be a microprocessor or any conventional processor. The steps of the methods disclosed in the embodiments of this application can be directly embodied in the execution of a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor. The software modules can be located in random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, or other mature storage media in the art. The storage medium is located in memory, and the processor reads information from the memory and, in conjunction with its hardware, completes the steps of the above method.

[0458] It is understood that the memory in the embodiments of this application can be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory. The non-volatile memory can be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. The volatile memory can be random access memory (RAM), which is used as an external cache. By way of example, but not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), Synchronous DRAM (SDRAM), Double Data Rate SDRAM (DDR SDRAM), Enhanced Synchronous DRAM (ESDRAM), Synchlink DRAM (SLDRAM), and Direct Rambus RAM (DR RAM). It should be noted that the memory used in the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0459] It should be understood that the above-described memory is exemplary and not a limiting description. For example, the memory in the embodiments of this application may also be static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct memory bus RAM (DR RAM), etc. That is to say, the memory in the embodiments of this application is intended to include, but is not limited to, these and any other suitable types of memory.

[0460] This application also provides a computer-readable storage medium for storing computer programs.

[0461] Optionally, the computer-readable storage medium can be applied to the first STA in the embodiments of this application, and the execution of the computer program causes the computer to execute the corresponding processes implemented by the first STA in the various methods of the embodiments of this application. For the sake of brevity, it will not be described in detail here.

[0462] This application also provides a computer program product, including computer program instructions.

[0463] Optionally, the computer program product can be applied to the first STA in the embodiments of this application, and the execution of the computer program instructions causes the computer to execute the corresponding processes implemented by the first STA in the various methods of the embodiments of this application. For the sake of brevity, it will not be described in detail here.

[0464] This application also provides a computer program.

[0465] Optionally, the computer program can be applied to the first STA in the embodiments of this application. When the computer program is run on the computer, it causes the computer to execute the corresponding processes implemented by the first STA in the various methods of the embodiments of this application. For the sake of brevity, it will not be described in detail here.

[0466] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0467] Those skilled in the art will understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0468] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between apparatuses or units may be electrical, mechanical, or other forms.

[0469] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

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

[0471] If the aforementioned functions are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or a portion of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0472] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A method 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; first power indication information, the first power indication information being used to indicate the first power range; 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 performs transmission on all or part of sub-channels in adjacent channels and / or alternative adjacent channels based on an 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 transmission of a corresponding sub-channel in adjacent channels based on an OBSS PPDU transmission bandwidth is allowed and unrestricted during OBSS PPDU transmission; a second transmission mode, in which transmission of a corresponding sub-channel in adjacent channels based on an OBSS PPDU transmission bandwidth is not allowed during OBSS PPDU transmission; a third transmission mode, in which transmission of a corresponding sub-channel in adjacent channels and alternative adjacent channels based on an OBSS PPDU transmission bandwidth is not allowed during OBSS PPDU transmission; 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.

Images