Wireless communication method and device

Abstract

A wireless communication method and device, the method comprising: a first access point (AP) sending a first request frame to at least one second AP, the first request frame comprising first indication information and / or a target cooperative transmission command, the first indication information being used for indicating a first target cooperative transmission mode and / or the target cooperative transmission command being used for indicating a second target cooperative transmission mode; the first target cooperative transmission mode is a cooperative transmission mode in which the first AP requests the at least one second AP to participate, and the target cooperative transmission command is a cooperative transmission command corresponding to the first target cooperative transmission mode.

Description

Wireless communication method and device Technical Field

[0001] The embodiments of the present application relate to the field of communications, and specifically to a method and device for wireless communications. Background Art

[0002] In a multi-access point (AP) collaborative transmission scenario, an AP can support one or more multi-AP collaborative transmission modes. For different multi-AP collaborative transmission modes, the information that the APs need to exchange during the collaborative preparation phase varies, and the AP implementation complexity is relatively high. Therefore, how to design and reduce the implementation complexity of multi-AP collaboration is an urgent problem that needs to be solved.

[0003] Summary of the Invention

[0004] The present application provides a wireless communication method and device, which are conducive to reducing the implementation complexity of multi-AP collaboration.

[0005] In a first aspect, a method for wireless communication is provided, including: a first access point AP sends a first request frame to at least one second AP, the first request frame including first indication information and / or a target collaborative transmission command, wherein the first indication information is used to indicate a first target collaborative transmission mode, the first target collaborative transmission mode is a collaborative transmission mode in which the first AP requests the at least one second AP to participate, and the target collaborative transmission command is a collaborative transmission command corresponding to the first target collaborative transmission mode.

[0006] In a second aspect, a method for wireless communication is provided, including: a second access point AP receives a first request frame sent by a first AP, the first request frame includes first indication information and / or a target collaborative transmission command, wherein the first indication information is used to indicate a first target collaborative transmission mode, the first target collaborative transmission mode is a collaborative transmission mode in which the first AP requests the second AP to participate, and the target collaborative transmission command is a collaborative transmission command corresponding to the first target collaborative transmission mode.

[0007] According to a third aspect, an access point is provided for executing the method in the first aspect or its various implementations.

[0008] Specifically, the access point includes a functional module for executing the method in the above-mentioned first aspect or each implementation manner thereof.

[0009] In a fourth aspect, an access point is provided, configured to execute the method in the second aspect or its respective implementation manners.

[0010] Specifically, the access point includes a functional module for executing the method in the above second aspect or each implementation manner thereof.

[0011] In a fifth aspect, an access point is provided, comprising a processor and a memory, wherein the memory is configured to store a computer program, and the processor is configured to call and execute the computer program stored in the memory to perform the method of the first aspect or its respective implementations.

[0012] In a sixth aspect, an access point is provided, comprising a processor and a memory, wherein the memory is configured to store a computer program, and the processor is configured to call and execute the computer program stored in the memory to perform the method of the second aspect or its respective implementations.

[0013] In a seventh aspect, a chip is provided for implementing the method in any one of the first to second aspects or their respective implementations.

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

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

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

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

[0018] Through the above technical solution, the first AP can request at least one second AP to participate in the multi-AP collaborative transmission of the first target collaborative transmission mode through a first request frame, and indicate the collaborative transmission command related to the first target collaborative transmission mode to the at least one second AP, thereby realizing a unified multi-AP collaborative preparation process, which is conducive to reducing the complexity of multi-AP collaborative transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] FIG1 is a schematic diagram of a communication system architecture provided in an embodiment of the present application.

[0020] FIG2 is a schematic diagram of a wired multi-AP cooperation architecture applicable according to an embodiment of the present application.

[0021] FIG3 is a schematic diagram of a wireless multi-AP cooperation architecture applicable according to an embodiment of the present application.

[0022] FIG4 is a schematic interaction diagram of a wireless communication method provided according to an embodiment of the present application.

[0023] FIG5 is a schematic interaction diagram of a wireless communication method according to an embodiment of the present application.

[0024] FIG6 is a schematic interaction diagram of a wireless communication method according to another embodiment of the present application.

[0025] FIG7 is a schematic interaction diagram of a wireless communication method according to yet another embodiment of the present application.

[0026] FIG8 is a schematic diagram of a frame format of a collaborative transmission request frame provided in an embodiment of the present application.

[0027] FIG. 9 is a schematic format diagram of a cooperative transmission mode field used in the cooperative transmission request frame in FIG. 8 .

[0028] FIG. 10 is another schematic format diagram of the cooperative transmission mode field used in the cooperative transmission request frame in FIG. 8 .

[0029] FIG11 is a schematic format diagram of the C-BF command field in the cooperative transmission request frame in FIG8 .

[0030] FIG. 12 is a schematic format diagram of the C-OFDMA command field in the coordinated transmission request frame in FIG. 8 .

[0031] FIG13 is a schematic format diagram of the C-SR command field in the cooperative transmission request frame in FIG8 .

[0032] FIG. 14 is a schematic format diagram of the J-TX command field in the cooperative transmission request frame in FIG. 8 .

[0033] FIG15 is a schematic diagram of a frame format of a trigger frame.

[0034] FIG16 is a schematic diagram of a frame format for carrying the first indication information and the target collaborative transmission command through the general information field of the trigger frame.

[0035] 17 to 20 are exemplary format diagrams of the relevant collaborative transmission mode command field in the trigger frame in FIG. 16 .

[0036] FIG21 is a schematic diagram of a frame format in which the communication information field of a trigger frame carries only the first indication information.

[0037] FIG22 is a schematic diagram of the format of carrying the target collaborative transmission command through the special user information field of the trigger frame (specifically, the user information of the trigger frame type).

[0038] 23 to 26 are diagrams showing exemplary formats of the user information field of the trigger frame type in FIG. 22 .

[0039] FIG27 is a schematic diagram of a frame format for carrying a collaborative transmission command via a newly defined user information field of a trigger frame.

[0040] FIG28 is a schematic diagram of a frame format for carrying the first indication information and the target collaborative transmission command through the user information field of the trigger frame.

[0041] Figure 29 is a schematic diagram of the frame format of a collaborative transmission response frame provided in an embodiment of the present application.

[0042] FIG30 is a schematic format diagram of the accepted collaborative transmission mode field in the collaborative transmission response frame in FIG29.

[0043] FIG31 is another schematic format diagram of the accepted cooperative transmission mode field in the cooperative transmission response frame in FIG29.

[0044] FIG32 is a schematic format diagram of the participating STA list field in the cooperative transmission response frame in FIG29.

[0045] FIG33 is a schematic format diagram of the participating C-BF information field in the cooperative transmission response frame in FIG29.

[0046] FIG34 is a schematic format diagram of the participating J-TX information field in the cooperative transmission response frame in FIG29.

[0047] FIG35 is a schematic format diagram of the participating C-OFDMA information field in the cooperative transmission response frame in FIG29.

[0048] FIG36 is a schematic format diagram of the participating C-SR information field in the cooperative transmission response frame in FIG29.

[0049] Figure 37 is a schematic diagram of the frame format of another collaborative transmission response frame provided in an embodiment of the present application.

[0050] 38-41 are schematic format diagrams of the collaborative transmission mode information field in the collaborative transmission response frame in FIG. 37 .

[0051] Figure 42 is a schematic diagram of the frame format of a collaborative transmission notification frame provided in an embodiment of the present application.

[0052] FIG43 is a schematic format diagram of the adopted collaborative transmission mode field in the collaborative transmission notification frame in FIG42 .

[0053] FIG. 44 is another schematic format diagram of the adopted collaborative transmission mode field in the collaborative transmission notification frame in FIG. 42 .

[0054] FIG45 is a schematic format diagram of the participating AP list field in the cooperative transmission notification frame in FIG42.

[0055] FIG46 is a schematic format diagram of the C-BF / J-TX parameter field in the collaborative transmission notification frame in FIG42.

[0056] FIG47 is a schematic format diagram of the C-SR parameter field in the collaborative transmission notification frame in FIG42 .

[0057] FIG. 48 is a schematic format diagram of the C-UL-MU-MIMO parameter field in the cooperative transmission notification frame in FIG. 42 .

[0058] FIG49 is a schematic format diagram of the C-OFDMA parameter field in the cooperative transmission notification frame in FIG42.

[0059] Figure 50 is a schematic block diagram of an access point provided in an embodiment of the present application.

[0060] Figure 51 is a schematic block diagram of another access point provided in an embodiment of the present application.

[0061] Figure 52 is a schematic block diagram of a communication device provided in an embodiment of the present application.

[0062] Figure 53 is a schematic block diagram of a chip provided in an embodiment of the present application.

[0063] Figure 54 is a schematic block diagram of a communication system provided in an embodiment of the present application. DETAILED DESCRIPTION

[0064] The following will describe the technical solutions in the embodiments of this application in conjunction with the drawings in the embodiments of this application. Obviously, the embodiments described are part of the embodiments of this application, not all of the embodiments. With respect to the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0065] The technical solutions of the embodiments of the present application can be applied to various communication systems, such as Wireless Local Area Networks (WLAN), Wireless Fidelity (WiFi), or other communication systems.

[0066] For example, a communication system 100 used in an embodiment of the present application is shown in FIG1 . The communication system 100 may include an access point (AP) 110 and a station (STA) 120 that accesses a network through the access point 110 .

[0067] In some scenarios, an AP is also called an AP STA. In a sense, an AP is also a STA.

[0068] In some scenarios, a STA is also called a non-AP STA.

[0069] The communication in the communication system 100 can be communication between an AP and a non-AP STA, communication between a non-AP STA and a non-AP STA, or communication between a STA and a peer STA, where a peer STA may refer to a device that communicates with the STA on a peer-to-peer basis. For example, the peer STA may be an AP or a non-AP STA.

[0070] An AP acts as a bridge between wired and wireless networks. Its primary function is to connect wireless network clients together and then connect the wireless network to the Ethernet. An AP can be a terminal device with a WiFi chip (such as a mobile phone) or a network device (such as a router).

[0071] It should be understood that the role of STA in the communication system is not absolute. For example, in some scenarios, when a mobile phone is connected to a router, the mobile phone is a non-AP STA. When the mobile phone serves as a hotspot for other mobile phones, the mobile phone plays the role of AP.

[0072] APs and non-AP STAs can be devices used in the Internet of Vehicles, 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.

[0073] In some embodiments, a non-AP STA may support 802.11be. A non-AP STA may also support various current and future 802.11 family wireless local area network (WLAN) standards, such as 802.11ax, 802.11ac, 802.11n, 802.11g, 802.11b, and 802.11a.

[0074] In some embodiments, the AP 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.

[0075] In the embodiment of the present application, the STA may be a mobile phone, tablet computer, computer, virtual reality (VR) device, augmented reality (AR) device, wireless device in industrial control, set-top box, wireless device in self-driving, in-vehicle communication equipment, wireless device in remote medical, wireless device in smart grid, wireless device in transportation safety, wireless device in smart city or smart home, wireless communication chip / ASIC / SOC / etc. that supports WLAN or WiFi technology.

[0076] The frequency bands supported by WLAN technology may include but are not limited to: low frequency bands (eg, 2.4 GHz, 5 GHz, 6 GHz) and high frequency bands (eg, 60 GHz).

[0077] FIG1 exemplarily shows one AP STA and two non-AP STAs. Optionally, the communication system 100 may include multiple AP STAs and other numbers of non-AP STAs, which is not limited in the embodiments of the present application.

[0078] It should be understood that in the embodiments of the present application, a device having communication functionality in a network / system may be referred to as a communication device. Taking the communication system 100 shown in FIG1 as an example, the communication device may include an access point 110 and a station 120 having communication functionality. Access point 110 and station 120 may be the specific devices described above and will not be described in detail here. The communication device may also include other devices in the communication system 100, such as a network controller, a gateway, or other network entities, which is not limited in the embodiments of the present application.

[0079] It should be understood that the terms "system" and "network" are often used interchangeably herein. The term "and / or" is simply a description of an association between related objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, or B exists alone. Furthermore, the character " / " generally indicates that the related objects are in an "or" relationship.

[0080] It should be understood that the "indication" mentioned in the embodiments of this application can be a direct indication, an indirect indication, or an indication of an association. For example, "A indicates B" can mean that A directly indicates B, for example, B can be obtained through A; it can also mean that A indirectly indicates B, for example, A indicates C, and B can be obtained through C; it can also mean that there is an association between A and B.

[0081] In the description of the embodiments of the present application, the term "corresponding" may indicate a direct or indirect correspondence between the two, or an association relationship between the two, or a relationship between indication and being indicated, configuration and being configured, etc.

[0082] In the embodiments of the present application, "predefined" may be implemented by pre-storing corresponding codes, tables, or other methods that can be used to indicate relevant information in a device (e.g., including an access point and a station). The present application does not limit the specific implementation method. For example, predefined may refer to a method defined in a protocol.

[0083] In the embodiments of the present application, the “protocol” may refer to a standard protocol in the communication field, for example, it may include a WiFi protocol and related protocols used in future WiFi communication systems, and the present application does not limit this.

[0084] To facilitate understanding of the technical solutions of the embodiments of the present application, the establishment of a multi-AP cooperation set related to the present application is described below.

[0085] The establishment of a multi-AP cooperative set includes the following two stages: multi-AP cooperative capability discovery stage and multi-AP cooperative set establishment stage.

[0086] In the multi-AP cooperation capability discovery phase, APs can discover each other's multi-AP cooperation capabilities by receiving beacon frames or other management frames sent by neighboring APs.

[0087] In the multi-AP cooperative set establishment phase, the AP that initiates multi-AP cooperative transmission is called the master AP (Master AP, MAP), and the MAP selects the auxiliary AP (Slave AP, SAP) (one or more SAPs) around it to participate in the multi-AP cooperative transmission. In this process, the MAP and SAP will exchange some information for configuring the multi-AP cooperative set. The specific steps and interactive information are as follows:

[0088] 1) MAP sends a request frame to SAP, which mainly includes the following information: the identity (ID) of SAP in multi-AP collaborative transmission and the ID of multi-AP collaborative set;

[0089] 2) SAP replies to MAP with a response frame, which mainly includes the following information: information about the STA associated with SAP, including the STA's ID and its ability to participate in multi-AP collaborative transmission; and the priority of the STA in participating in multi-AP collaborative transmission.

[0090] APs participating in multi-AP collaborative transmission may include the following roles:

[0091] MAP (Master AP), SAP (Slave AP), Coordinating AP, Coordinated AP, Sharing AP, and Shared AP.

[0092] Among them, in the multi-AP cooperative set establishment phase, the AP in the MAP role initiates a request for multi-AP cooperative set establishment to the AP in the SAP role; in the channel sounding phase, the cooperating AP in the cooperating AP role initiates channel sounding, and the AP in the coordinated AP role participates in channel sounding; in the preparation phase and / or the coordinated transmission phase, the AP in the sharing AP role shares its transmission opportunity (TXOP) resources with the AP in the shared AP role for coordinated transmission.

[0093] In some embodiments, the present application may be applied to a wired multi-AP cooperative transmission architecture as shown in FIG. 2 , or to a wireless multi-AP cooperative transmission architecture as shown in FIG. 3 .

[0094] In the wired multi-AP cooperative transmission architecture, as shown in Figure 2 (a), the coordinator in the network is in an AP and controls other APs through a wired connection; as shown in Figure 2 (b), there is an independent coordinator in the network that controls other APs through a wired connection. For the wired multi-AP cooperative transmission architecture, the multi-AP cooperative set is directly set by the network operator at the controller.

[0095] In the wireless multi-AP cooperative transmission architecture, the coordinator in the network is located in an AP (called MAP) and controls other APs (called SAPs) wirelessly.

[0096] In some scenarios, an AP can support one or more of the following multi-AP cooperative transmission modes:

[0097] Coordinated Beamforming (C-BF) mode;

[0098] Coordinated Orthogonal Frequency Division Multiple Access (C-OFDMA) mode;

[0099] Coordinated Spatial Reuse (C-SR) mode;

[0100] Joint Transmission (J-TX) mode;

[0101] Coordinated Uplink Multiple-User Multiple Input Multiple Output (C-UL MU MIMO) mode.

[0102] For different multi-AP cooperative transmission modes, the information that needs to be exchanged in the preparation stage is different. Therefore, how to design a unified cooperative preparation process to reduce the complexity of multi-AP cooperation is an issue that needs to be solved urgently.

[0103] To facilitate understanding of the technical solutions of the embodiments of the present application, the technical solutions of the present application are described in detail below through specific embodiments. The following related technologies can be combined with the technical solutions of the embodiments of the present application as optional solutions, and they all fall within the scope of protection of the embodiments of the present application. The embodiments of the present application include at least part of the following contents.

[0104] FIG4 is a schematic interaction diagram of a wireless communication method 200 according to an embodiment of the present application. As shown in FIG4 , the method 200 includes the following contents:

[0105] S210: A first access point AP sends a first request frame to at least one second AP.

[0106] Correspondingly, the at least one second AP receives the first request frame from the first AP.

[0107] In which, the first request frame includes first indication information and / or target collaborative transmission command, wherein the first indication information is used to indicate a first target collaborative transmission mode, the first target collaborative transmission mode is a collaborative transmission mode in which the first AP requests the at least one second AP to participate, and the target collaborative transmission command is a collaborative transmission command corresponding to the first target collaborative transmission mode.

[0108] In some embodiments, the first request frame is also called a coordinated transmission request (Coordinated TX Request) frame, or a multi-AP preparation trigger frame (Multi-AP Preparation Trigger frame), or other similar names are used, which are not limited in this application.

[0109] In some embodiments, the first AP and the at least one second AP belong to a multi-AP cooperation set.

[0110] In some embodiments, the first AP is a sharing AP (Sharing AP), and the second AP is a shared AP (Shared AP).

[0111] In some embodiments, the first AP is a MAP and the second AP is a SAP.

[0112] In some embodiments, the first target cooperative transmission mode may include at least one of the following modes:

[0113] C-BF mode, C-OFDMA mode, C-SR mode, J-TX mode, C-UL MU-MIMO mode.

[0114] In some embodiments, a first AP may request at least one second AP to participate in multi-AP collaborative transmission of a first target collaborative transmission mode through a first request frame, and indicate collaborative transmission commands related to the first target collaborative transmission mode to the at least one second AP, thereby enabling a unified multi-AP collaborative preparation process to be implemented, which is conducive to reducing the complexity of multi-AP collaborative transmission.

[0115] In some embodiments, when the first target collaborative transmission mode includes a C-OFDMA mode, the target collaborative transmission command can be used to inquire whether the at least one second AP participates in the multi-AP collaborative transmission of the C-OFDMA mode and / or allocates frequency domain resources, such as resource units (RU) or multiple resource units (MRU), for the multi-AP collaborative transmission of the C-OFDMA mode.

[0116] In some embodiments, when the first target collaborative transmission mode includes a C-BF mode, the target collaborative transmission command can be used to inquire whether the at least one second AP participates in the multi-AP collaborative transmission of the C-BF mode, and / or request the second AP to report channel state information (CSI).

[0117] In some embodiments, when the first target collaborative transmission mode includes a J-TX mode, the target collaborative transmission command can be used to inquire whether the at least one second AP participates in the multi-AP collaborative transmission of the J-TX mode, and / or request the second AP to report CSI.

[0118] In some embodiments, when the first target cooperative transmission mode includes the C-UL MU-MIMO mode, the target cooperative transmission command may be used to inquire whether the at least one second AP participates in the multi-AP cooperative transmission in the C-UL MU-MIMO mode.

[0119] In some embodiments, when the first target collaborative transmission mode includes a C-SR mode, the target collaborative transmission command can be used to inquire whether the at least one second AP participates in the multi-AP collaborative transmission of the C-SR mode, and / or request the second AP to report a received signal strength indicator (RSSI).

[0120] In the embodiment of the present application, the AP participating in the multi-AP cooperative transmission in the C-BF mode may also be referred to as the AP participating in the C-BF mode. The same is true for other multi-AP cooperative modes, which will not be repeated here.

[0121] Mode 1: The first indication information indicates, in a bitmap manner, the collaborative transmission mode in which the first AP requests the at least one second AP to participate.

[0122] Optionally, in mode 1, the number of bits occupied by the first indication information may be equal to the total number P of candidate multi-AP cooperation modes.

[0123] For example, the first indication information includes multiple bits, each bit corresponding to one of multiple collaborative transmission modes, and the value of each bit is used to indicate whether the first AP requests the at least one second AP to participate in the corresponding collaborative transmission mode. For example, a value of 1 indicates a request, and a value of 0 indicates no request, or a value of 1 indicates no request, and a value of 0 indicates a request.

[0124] Optionally, the first indication information may be 5 bits, used to indicate whether to request C-BF mode, C-OFDMA mode, C-SR mode, J-TX mode and C-UL MU-MIMO mode.

[0125] In mode 1, the first AP may request the at least one second AP to participate in one or more modes of multi-AP cooperative transmission.

[0126] Mode 2: Different values ​​of the first indication information are used to indicate the collaborative transmission mode in which the first AP requests the at least one second AP to participate.

[0127] In the second approach, the number of bits occupied by the first indication information may be determined according to the total number P of candidate multi-AP cooperation modes.

[0128] For example, if the candidate multi-AP cooperation mode includes five multi-AP cooperation modes: C-BF mode, C-OFDMA mode, C-SR mode, J-TX mode and C-UL MU-MIMO mode, the first indication information can occupy 3 bits, and the different values ​​of the 3 bits are used to indicate that the first AP requests to participate in the multi-AP cooperative transmission mode of the at least one second AP.

[0129] As an example, the 3-bit value of 001 indicates a request to participate in the C-BF mode, the value of 010 indicates a request to participate in the C-OFDMA mode, the value of 011 indicates a request to participate in the C-SR mode, the value of 100 indicates a request to participate in the J-TX mode, and the value of 101 indicates a request to participate in the C-UL MU-MIMO mode, where the values ​​000 and 110-111 are reserved values.

[0130] In some embodiments, the target cooperative transmission command includes at least one of the following information:

[0131] Indication information of whether to report CSI between the second AP and the associated STA;

[0132] Indication information of whether to report CSI between the second AP and non-associated STAs (e.g., overlapping basic service set (OBSS) STAs);

[0133] An available RU or MRU shared by the first AP to the at least one second AP;

[0134] Indication information of whether to report the RSSI between the second AP and the associated STA;

[0135] Indication information of whether to report the RSSI between the second AP and a non-associated STA (eg, an OBSS STA).

[0136] For example, when the first AP requests the second AP to participate in multi-AP collaborative transmission in C-BF mode (ie, the first target collaborative transmission mode includes C-BF mode), the target collaborative transmission command includes a collaborative transmission command corresponding to the C-BF mode.

[0137] Optionally, the collaborative transmission command corresponding to the C-BF mode includes at least one of the following information:

[0138] Indication information of whether to report CSI between the second AP and the associated STAs;

[0139] Indication information of whether to report the CSI between the second AP and the OBSS STA.

[0140] Optionally, in an embodiment of the present application, whether to request reporting of the CSI between the second AP and the associated STA and whether to request reporting of the CSI between the second AP and the OBSS STA may also correspond to the same indication information. In this case, the first AP may instruct the second AP to simultaneously report the CSI between the second AP and the associated STA and the CSI between the second AP and the OBSS STA, or may also instruct the second AP not to report the CSI between the second AP and the associated STA and the CSI between the second AP and the OBSS STA.

[0141] For another example, when the first AP requests the second AP to participate in multi-AP collaborative transmission in J-TX mode (ie, the first target collaborative transmission mode includes the J-TX mode), the target collaborative transmission command includes a collaborative transmission command corresponding to the J-TX mode.

[0142] Optionally, the collaborative transmission command corresponding to the J-TX mode includes at least one of the following information:

[0143] Indication information of whether to report CSI between the second AP and the associated STAs;

[0144] Indication information of whether to report the CSI between the second AP and the OBSS STA.

[0145] It should be understood that when the first target collaborative transmission mode includes the C-BF mode and the J-TX mode, the first request frame may include collaborative transmission commands corresponding to the C-BF mode and the J-TX mode respectively, or the same collaborative transmission command may be shared.

[0146] For another example, when the first AP requests the second AP to participate in multi-AP collaborative transmission in C-OFDMA mode (ie, the first target collaborative transmission mode includes C-OFDMA mode), the target collaborative transmission command includes a collaborative transmission command corresponding to the C-OFDMA mode.

[0147] Optionally, the collaborative transmission command corresponding to the C-OFDMA mode includes:

[0148] The first AP shares available RUs or MRUs with the at least one second AP.

[0149] For another example, when the first AP requests the second AP to participate in multi-AP collaborative transmission in C-SR mode (ie, the first target collaborative transmission mode includes C-SR mode), the target collaborative transmission command includes a collaborative transmission command corresponding to the C-SR mode.

[0150] Optionally, the collaborative transmission command corresponding to the C-SR mode includes at least one of the following information:

[0151] Indication information of whether to report the RSSI between the second AP and the associated STA;

[0152] Indication information of whether to report the RSSI between the second AP and the OBSS STA.

[0153] For another example, when the first AP requests the second AP to participate in multi-AP collaborative transmission in C-UL MU-MIMO mode (that is, the first target collaborative transmission mode includes C-UL MU-MIMO mode), the target collaborative transmission command includes the collaborative transmission command corresponding to the C-UL MU-MIMO mode.

[0154] In some embodiments of the present application, as shown in FIG4 , the method 200 further includes:

[0155] The first AP receives a first response frame sent by at least one second AP, where the first response frame is used to indicate whether the at least one second AP participates in the multi-AP cooperative transmission in the first target cooperative transmission mode.

[0156] In some embodiments, the first response frame is also called a coordinated transmission response (Coordinated TX Responce) frame, or other similar names, which is not limited in this application.

[0157] In some embodiments, the first response frame includes second indication information and / or target collaborative transmission information, the second indication information is used to indicate a second target collaborative transmission mode, the second target collaborative transmission mode is a collaborative transmission mode in which the second AP participates, or a collaborative transmission mode that accepts participation, and the target collaborative transmission information is collaborative transmission information corresponding to the second target collaborative transmission mode.

[0158] That is, the second AP can respond to whether to participate in the multi-AP collaborative transmission requested by the first AP through the first response frame. If participating, the second AP can report relevant collaborative transmission information to the first AP, thereby realizing a unified multi-AP collaborative preparation process, which is conducive to reducing the complexity of multi-AP collaborative transmission.

[0159] In some embodiments of the present application, the first AP may send the first request frame to the at least one second AP in a unicast, multicast or broadcast manner.

[0160] For example, as shown in FIG5 , the first request frame may be sent by the first AP (eg, AP1 ) to the at least one second AP (eg, APm and APn) in a one-to-one sequence.

[0161] Furthermore, the second AP that receives the first request frame may reply with a first response frame in turn. For example, the second AP replies with a first response frame after receiving the first request frame with a short interframe space (SIFS).

[0162] For another example, as shown in FIG6 , the first request frame may be sent by the first AP (eg, AP1) to the at least one second AP (eg, APm and APn) in a multicast or broadcast manner.

[0163] Furthermore, each second AP that receives the first request frame may synchronously reply with a first response frame. For example, each second AP may simultaneously reply with a first response frame SIFS after receiving the first request frame.

[0164] That is, the at least one second AP may reply to the first response frame synchronously or asynchronously.

[0165] In some embodiments, the first request frame is included in an aggregated medium access control protocol data unit (Aggregate Medium Access Control (MAC) Protocol Data Unit, A-MPDU), and when the at least one second AP synchronously sends the first response frame, the A-MPDU also includes a trigger frame, and the trigger frame is used to allocate sending resources to the at least one second AP and trigger the at least one second AP to send the first response frame simultaneously.

[0166] In some embodiments, the second target cooperative transmission mode may be a multi-AP cooperative transmission mode in which the first AP requests the second AP to participate and the second AP accepts to participate.

[0167] In some cases, the second target cooperative transmission mode may include at least one of the following modes:

[0168] C-BF mode, C-OFDMA mode, C-SR mode, J-TX mode, C-UL MU-MIMO mode.

[0169] In other embodiments, the second AP may not accept any multi-AP cooperative transmission mode requested by the first AP. In this case, the second AP may not reply to the first response frame, or the second AP may reply to the first response frame, and the second indication information in the first response frame is used to indicate that the second AP does not accept to participate in any multi-AP cooperative transmission mode. Optionally, if the second AP does not accept to participate in any multi-AP cooperative transmission mode, the first response frame may not include the target cooperative transmission information.

[0170] In some embodiments, when the second target cooperative transmission mode includes a C-OFDMA mode, the target cooperative transmission information may be used to report a target RU or MRU selected by the second AP from available RUs or MRUs provided by the first AP.

[0171] In some embodiments, when the second target cooperative transmission mode includes the C-BF mode, the target cooperative transmission information can be used to report the participation of the STA associated with the second AP in the multi-AP cooperative transmission of the C-BF mode and / or to report CSI information.

[0172] In some embodiments, when the second target collaborative transmission mode includes a J-TX mode, the target collaborative transmission information can be used to report the participation of the STA associated with the second AP in the multi-AP collaborative transmission of the J-TX mode and / or to report CSI information.

[0173] In some embodiments, when the second target cooperative transmission mode includes the C-UL MU-MIMO mode, the target cooperative transmission information can be used to report the participation of the STA associated with the second AP in the multi-AP cooperative transmission of the C-UL MU-MIMO mode.

[0174] In some embodiments, when the second target cooperative transmission mode includes the C-SR mode, the target cooperative transmission information may be used to report RSSI information of the STA.

[0175] Mode 1: the second indication information is indicated in a bitmap manner.

[0176] Optionally, in mode 1, the number of bits occupied by the second indication information may be equal to the total number P of candidate multi-AP cooperation modes.

[0177] For example, the second indication information includes multiple bits, each bit corresponding to one of multiple collaborative transmission modes, and the value of each bit is used to indicate whether the second AP participates in the corresponding collaborative transmission mode. For example, a value of 1 indicates acceptance, a value of 0 indicates rejection, or a value of 1 indicates rejection, and a value of 0 indicates acceptance.

[0178] Optionally, the second indication information may be 5 bits, used to indicate whether to accept the C-BF mode, C-OFDMA mode, C-SR mode, J-TX mode and C-UL MU-MIMO mode.

[0179] In mode 1, the second AP may instruct the second AP to accept participation in one or more modes of multi-AP cooperative transmission.

[0180] Mode 2: Different values ​​of the second indication information are used to indicate that the second AP accepts to participate in the collaborative transmission mode.

[0181] In the second approach, the number of bits occupied by the second indication information may be determined according to the total number P of candidate multi-AP cooperation modes.

[0182] For example, if the candidate multi-AP cooperation mode includes five multi-AP cooperation modes: C-BF mode, C-OFDMA mode, C-SR mode, J-TX mode and C-UL MU-MIMO mode, the second indication information can occupy 3 bits, and the different values ​​of the 3 bits are used to indicate the multi-AP cooperative transmission mode in which the second AP accepts participation.

[0183] As an example, the 3-bit value of 001 indicates acceptance of participation in C-BF mode, the value of 010 indicates acceptance of participation in C-OFDMA mode, the value of 011 indicates acceptance of participation in C-SR mode, the value of 100 indicates acceptance of participation in J-TX mode, and the value of 101 indicates acceptance of participation in C-UL MU-MIMO mode, where the values ​​000 and 110-111 are reserved values.

[0184] In some embodiments of the present application, the target cooperative transmission information includes at least one of the following information:

[0185] A list of STAs participating in the second target cooperative transmission mode, the RU or MRU selected by the second AP, the CSI between the second AP and the STA, and the RSSI between the second AP and the STA.

[0186] It should be understood that in an embodiment of the present application, the list of STAs participating in the second target cooperative transmission mode can be indicated by a STA ID (for example, an association identifier (Association ID, AID)), or can be indicated by a bitmap. For example, a bitmap can be used to indicate whether each AP in the multi-AP cooperative transmission set participates in the third target cooperative transmission mode.

[0187] In some embodiments, the list of STAs participating in the second target cooperative transmission mode may refer to a list of STAs participating in the second target cooperative transmission mode associated with the second AP.

[0188] Optionally, the STA list participating in the second target collaborative transmission mode may include a STA list corresponding to each collaborative transmission mode accepted by the second AP, or may include only one STA list applicable to all collaborative transmission modes accepted by the second AP.

[0189] For example, if the second target collaborative transmission mode includes C-BF mode and J-TX mode, the target collaborative transmission information may include a list of STAs associated with the second AP participating in the C-BF mode and a list of STAs associated with the second AP participating in the J-TX mode. Alternatively, it may include only one STA list, indicating that the STAs associated with the second AP participating in the C-BF mode are the same as the STAs associated with the second AP participating in the J-TX mode.

[0190] In some embodiments, the CSI between the second AP and the STA may refer to:

[0191] CSI between the second AP and STAs participating in the second target cooperative transmission mode (for example, including associated STAs and / or OBSS STAs).

[0192] In some other embodiments, the CSI between the second AP and the STA may refer to:

[0193] The CSI between the second AP and the associated STA and / or OBSS STA (ie, regardless of whether the STA participates in the second target cooperative transmission mode), for example, may include all CSI obtained by the second AP in the channel sounding phase.

[0194] In some embodiments, the RSSI between the second AP and the STA may refer to:

[0195] RSSI between the second AP and STAs (eg, including associated STAs and / or OBSS STAs) participating in the second target cooperative transmission mode.

[0196] In some other embodiments, the RSSI between the second AP and the STA may refer to:

[0197] The RSSI between the second AP and the associated STA and / or OBSS STA (ie, regardless of whether the STA participates in the second target cooperative transmission mode) may include, for example, all RSSIs obtained by the second AP during the channel detection phase.

[0198] In some embodiments, when the second target cooperative transmission mode includes a C-BF mode, the target cooperative transmission information includes cooperative transmission information corresponding to the C-BF mode.

[0199] Optionally, the collaborative transmission information corresponding to the C-BF mode includes at least one of the following:

[0200] A list of STAs participating in the C-BF mode, CSI between the second AP and associated STAs participating in the C-BF mode, and CSI between the second AP and OBSS STAs participating in the C-BF mode.

[0201] Optionally, the collaborative transmission information corresponding to the C-BF mode includes at least one of the following:

[0202] A list of STAs participating in C-BF mode, and CSI between the second AP and at least one STA, where the at least one CSI may include all CSI obtained by the second AP during the channel sounding phase. Optionally, the at least one STA may include STAs participating in C-BF mode and / or STAs not participating in C-BF mode.

[0203] In some embodiments, when the second target cooperative transmission mode includes a J-TX mode, the target cooperative transmission information includes cooperative transmission information corresponding to the J-TX mode, and the cooperative transmission information corresponding to the J-TX mode includes at least one of the following:

[0204] A list of STAs participating in the J-TX mode, CSI between the second AP and associated STAs participating in the J-TX mode, and CSI between the second AP and OBSS STAs participating in the J-TX mode.

[0205] Optionally, the collaborative transmission information corresponding to the J-TX mode includes at least one of the following:

[0206] A list of STAs participating in J-TX mode, and CSI between the second AP and at least one STA, where the at least one CSI may include all CSI obtained by the second AP during the channel sounding phase. Optionally, the at least one STA may include STAs participating in C-BF mode and / or STAs not participating in C-BF mode.

[0207] In some embodiments, when the second target collaborative transmission mode includes a C-OFDMA mode, the target collaborative transmission information includes collaborative transmission information corresponding to the C-OFDMA mode, wherein the collaborative transmission information corresponding to the C-OFDMA mode includes: the RU or MRU selected by the second AP.

[0208] In some embodiments, when the second target collaborative transmission mode includes a C-SR mode, the target collaborative transmission information includes collaborative transmission information corresponding to the C-SR mode.

[0209] Optionally, the collaborative transmission information corresponding to the C-SR mode includes at least one of the following:

[0210] A list of STAs participating in C-SR mode, RSSI between the second AP and associated STAs participating in C-RS mode, and RSSI between the second AP and OBSS STAs participating in C-RS mode.

[0211] Optionally, the collaborative transmission information corresponding to the C-SR mode includes at least one of the following:

[0212] A list of STAs participating in C-SR mode, and the RSSI between the second AP and at least one STA, where the at least one RSSI may include all RSSIs obtained by the second AP during the channel sounding phase. Optionally, the at least one STA may include STAs participating in C-BF mode and / or STAs not participating in C-BF mode.

[0213] In some embodiments, when the second target cooperative transmission mode includes a C-UL MU-MIMO mode, the target cooperative transmission information includes cooperative transmission information corresponding to the C-UL MU-MIMO mode.

[0214] Optionally, in some embodiments of the present application, as shown in FIG4 , the method 200 further includes:

[0215] S230: The first AP sends a first notification frame to at least one third AP, where the first notification frame is used to notify the APs participating in the collaborative transmission of collaborative transmission parameters used.

[0216] In some embodiments, the first notification frame is also called a coordinated transmission notification (Coordinated TX Announce) frame, or other similar names, which is not limited in this application.

[0217] In some embodiments, the at least one third AP may be a second AP among the at least one second AP that participates in the first target cooperation mode.

[0218] In some embodiments, the first notification frame includes first notification information, and the first notification information includes at least one of the following:

[0219] third indication information, used to indicate a third target collaborative transmission mode, where the third target collaborative transmission mode is the collaborative transmission mode determined to be adopted by the first AP;

[0220] a list of APs participating in the third target cooperative transmission mode;

[0221] The target collaborative transmission parameter is used to indicate the collaborative transmission parameter corresponding to the third target collaborative transmission mode.

[0222] That is, the first AP can notify the second AP participating in the multi-AP collaborative transmission of the multi-AP collaborative transmission mode and related collaborative transmission parameters through the first notification frame, thereby realizing a unified multi-AP collaborative preparation process, which is conducive to reducing the complexity of multi-AP collaborative transmission.

[0223] In some embodiments, the third target collaborative transmission mode is the same as the first target collaborative transmission mode, or may be different. For example, the third target collaborative transmission mode includes part of the collaborative transmission mode in the first target collaborative transmission mode, or the third target collaborative transmission mode includes the collaborative transmission mode in which the second AP accepts to participate in the first target collaborative transmission mode.

[0224] In some embodiments, the third target cooperative transmission mode may include at least one of the following modes:

[0225] C-BF mode, C-OFDMA mode, C-SR mode, J-TX mode, C-UL MU-MIMO mode.

[0226] In some embodiments, when the third target cooperative transmission mode includes a C-OFDMA mode, the target cooperative transmission parameter may be used to indicate the RU or MRU determined by the first AP to be allocated to the second AP.

[0227] In some embodiments, when the third target collaborative transmission mode includes a C-BF mode, the target collaborative transmission parameters can be used to notify information of the APs and STAs participating in the multi-AP collaborative transmission in the C-BF mode, and / or the steering matrix information used by the APs participating in the multi-AP collaborative transmission in the C-BF mode.

[0228] In some embodiments, when the third target cooperative transmission mode includes the J-TX mode, the target cooperative transmission parameter may be used for steering matrix information used by APs participating in multi-AP cooperative transmission in the J-TX mode.

[0229] In some embodiments, when the third target cooperative transmission mode includes the C-UL MU-MIMO mode, the target cooperative transmission parameter can be used to notify the spatial stream (SS) of the APs participating in the multi-AP cooperative transmission of the C-UL MU-MIMO mode.

[0230] In some embodiments, when the third target cooperative transmission mode includes a C-SR mode, the target cooperative transmission parameter may be used for transmit power information used by APs participating in multi-AP cooperative transmission in the C-SR mode.

[0231] In some embodiments of the present application, the steering matrix information used by the APs participating in the multi-AP cooperative transmission in the C-BF mode may be calculated by the APs participating in the C-BF mode. In this case, the first AP may not need to notify the steering matrix used by each AP participating in the C-BF mode through the first notification frame. Each AP participating in the C-BF mode can use its own determined steering matrix for multi-AP cooperative transmission. Optionally, the APs participating in the C-BF mode may be determined based on the information of the APs and STAs participating in the multi-AP cooperative transmission in the C-BF mode notified in the first notification frame. For example, the APs participating in the C-BF mode may remove the CSI between the AP and the STAs not participating in the C-BF mode (including the STAs not participating in the C-BF mode associated with the AP and the CSI between the AP and the OBSS STAs not participating in the C-BF mode) from all the CSI obtained in the channel detection phase, and further determine the steering matrix used by the AP based on the remaining CSI.

[0232] In other embodiments of the present application, the steering matrix information used by the APs participating in the multi-AP cooperative transmission in the C-BF mode may be calculated by the first AP. In this case, the first AP may need to notify the steering matrix used by each AP participating in the C-BF mode through a first notification frame. Further, each AP participating in the C-BF mode may use the steering matrix notified by the first notification frame for multi-AP cooperative transmission. Optionally, the first AP may be determined based on the AP and STA information and CSI information participating in the multi-AP cooperative transmission in the C-BF mode reported in the first response frame sent by each second AP. The specific determination method is similar and will not be repeated here.

[0233] In some embodiments, the target cooperative transmission parameter includes at least one of the following:

[0234] Cooperative transmission parameters for C-BF mode;

[0235] Cooperative transmission parameters for C-OFDMA mode;

[0236] Cooperative transmission parameters for C-SR mode;

[0237] Cooperative transmission parameters for J-TX mode;

[0238] Cooperative transmission parameters for C-UL-MU-MIMO mode.

[0239] For example, when the third target cooperative transmission mode includes the C-BF mode, the target cooperative transmission parameters include cooperative transmission parameters for the C-BF mode.

[0240] For another example, when the third target coordinated transmission mode includes the C-OFDMA mode, the target coordinated transmission parameters include coordinated transmission parameters for the C-OFDMA mode.

[0241] For another example, when the third target collaborative transmission mode includes the C-SR mode, the target collaborative transmission parameters include collaborative transmission parameters for the C-SR mode.

[0242] For another example, when the third target cooperative transmission mode includes the J-TX mode, the target cooperative transmission parameters include cooperative transmission parameters for the J-TX mode.

[0243] For another example, when the third target cooperative transmission mode includes the C-UL-MU-MIMO mode, the target cooperative transmission parameters include cooperative transmission parameters for the C-UL-MU-MIMO mode.

[0244] In some embodiments, the collaborative transmission parameters for the C-BF mode include:

[0245] A list of APs participating in the C-BF mode, a transmission matrix (Tx matrix) or a transmission matrix, and a steering matrix for each AP participating in the C-BF mode.

[0246] In some embodiments, the collaborative transmission parameters for the J-TX mode include:

[0247] A list of APs participating in the J-TX mode, including the transmission matrix (Tx matrix) or transmission matrix and steering matrix of each AP participating in the J-TX mode.

[0248] In some embodiments, the coordinated transmission parameters for the C-OFDMA mode include:

[0249] List of APs participating in C-OFDMA mode, used for the RU / MRU of each AP participating in C-OFDMA mode.

[0250] In some embodiments, the collaborative transmission parameters for the C-SR mode include:

[0251] List of APs participating in C-SR mode, used to set the transmit power of each AP participating in C-SR mode.

[0252] In some embodiments, the collaborative transmission parameters for the C-UL-MU-MIMO mode include: a list of APs participating in the C-UL-MU-MIMO mode, and spatial stream SS allocation information for each AP participating in the C-UL-MU-MIMO mode.

[0253] Optionally, the STA list participating in the third target cooperative transmission mode may include AP lists corresponding to APs participating in each cooperative transmission mode, or may include only one AP list applicable to all cooperative transmission modes.

[0254] For example, when the third target collaborative transmission mode includes C-BF mode and J-TX mode, the target collaborative transmission parameters may include AP lists corresponding to C-BF mode and J-TX mode respectively, or the same AP list may be shared.

[0255] It should be understood that in an embodiment of the present application, the list of APs participating in the third target collaborative transmission mode can be indicated by AP ID, or can be indicated by a bitmap. For example, a bitmap can be used to indicate whether each AP in the multi-AP collaborative transmission set participates in the third target collaborative transmission mode.

[0256] In some embodiments, after receiving the first response frame from the second AP, the first AP may notify the second AP participating in the third target cooperative transmission mode of the multi-AP cooperative parameters used for participating in the multi-AP cooperative transmission of the third target cooperative transmission mode through a first notification frame.

[0257] As shown in FIG5 and FIG6, after the second AP replies to the first response frame, the first AP may notify the second AP participating in the third target cooperative transmission mode of the multi-AP cooperative transmission parameters used for the multi-AP cooperative transmission through the first notification frame.

[0258] Optionally, in the preparation stage, the first AP may not send the first notification frame to the second AP participating in the third target collaborative transmission mode, but instead carry the first notification information through a MAP transmission trigger frame (MAP Transmission Trigger frame) in the collaborative transmission stage, wherein the MAP transmission trigger frame is used to trigger the multi-AP collaborative transmission of the third target collaborative transmission mode.

[0259] Optionally, in some embodiments, when the third target cooperative transmission mode includes the J-TX mode, the cooperative preparation phase may further include a channel sounding step and a data transmission step. In the channel sounding step, the Sharing AP may initiate a joint or sequential channel sounding, and the Sharing AP or MAP may collect all CSI. In the data transmission step, the Sharing AP may send the collected CSI data to the Shared AP, which may then confirm the data.

[0260] Optionally, in some embodiments, when the third target cooperative transmission mode includes the C-SR mode, the cooperative preparation phase may further include an RSSI request step and an RSSI reporting step. In the RSSI request step, the Shared AP may request the STA device RSSI, such as the RSSI between the STA and an associated AP or a neighboring AP. In the RSSI reporting step, the STA may report the RSSI information to the associated AP.

[0261] In some embodiments, the first request frame may be implemented through a control frame, or may be implemented through a trigger frame, which is not limited in this application.

[0262] In some embodiments, the first response frame is implemented through a control frame, or may also be implemented through a management frame, for example, through a Quality-of-Service (QoS Null) frame, for example, through a QoS Null frame carrying a high throughput control (HT Control) field.

[0263] As shown in Figure 7, the first AP (i.e., AP1) sends a MAP Preparation Trigger frame to the second AP (e.g., APm and APn). After receiving the MAP Preparation Trigger frame, the second AP replies with a QoS Null frame carrying the HT Control field at the same time after the SIFS time. Further, optionally, the first AP can notify the second AP participating in the multi-AP collaborative transmission of the multi-AP collaborative transmission parameters used for the multi-AP collaborative transmission through the first notification frame.

[0264] It should be understood that in the examples of Figures 5 to 7 , the Coordinated TX Request frame or MAP Preparation Trigger frame sent by the Sharing AP and the Coordinated TX Response frame or QoS Null frame replied by the Shared AP can be arbitrarily combined. For example, when the Sharing AP sends a Coordinated TX Request frame, the Shared AP can also reply with a QoS Null frame; when the Sharing AP sends a MAP Preparation Trigger frame, the Shared AP can also reply with a Coordinated TX Response frame. The correspondence is not limited to the ones shown in Figures 5 to 7 .

[0265] Below, in combination with Figures 8 to 49, the frame format design of the first request frame, the first response frame and the first notification frame is explained.

[0266] It should be understood that the information carried in the frame formats shown in Figures 8 to 49, as well as the position, size and naming of each field in the frame format are only examples, which can be flexibly adjusted according to actual needs or the information carried, and this application does not limit this.

[0267] In some embodiments of the present application, the first request frame may be implemented through a control frame. For example, the first request frame may be a newly defined control frame.

[0268] 8 to 28 , the frame structure design of the first request frame is described.

[0269] In some embodiments, when the first request frame is implemented through a control frame, the first request frame is also called a collaborative transmission request frame.

[0270] FIG8 shows a schematic frame format diagram of a collaborative transmission request frame provided in an embodiment of the present application.

[0271] As shown in FIG8 , it may include the following fields:

[0272] Frame Control (occupies 2 bytes), Duration (occupies 2 bytes), Receiving Address (RA) (occupies 6 bytes), Transmission Address (TA) (occupies 6 bytes), Coordinated TX Request (occupies variable number of bytes), Frame Check Sequence (FCS) (occupies 4 bytes).

[0273] In some embodiments, the collaborative transmission request field is used to carry the first indication information and / or the target collaborative transmission command.

[0274] In some embodiments, as shown in FIG8 , the collaborative transmission request field includes at least one of the following fields:

[0275] A Coordinated TX Scheme Used field is used to indicate the coordinated transmission mode in which the first AP requests the second AP to participate, that is, to carry the aforementioned first indication information;

[0276] The C-BF Command field is used to indicate the collaborative transmission command corresponding to the C-BF mode;

[0277] The C-OFDMA Command field is used to indicate the coordinated transmission command corresponding to the C-OFDMA mode;

[0278] The C-SR Command field is used to indicate the coordinated transmission command corresponding to the C-SR mode;

[0279] The J-TX Command field is used to indicate the collaborative transmission command corresponding to the J-TX mode;

[0280] The C-UL MU-MIMO Command field is used to indicate the coordinated transmission command corresponding to the C-UL MU-MIMO mode.

[0281] In some embodiments, as shown in FIG9 , the Coordinated TX Scheme Used field includes at least one of the following fields:

[0282] Use the C-BF (C-BF Used) field to indicate whether to request multi-AP collaborative transmission using the C-BF mode;

[0283] Use the C-OFDMA (C-OFDMA Used) field to indicate whether to request multi-AP collaborative transmission using the C-OFDMA mode;

[0284] Use the C-SR (C-SR Used) field to indicate whether to request multi-AP collaborative transmission using the C-SR mode;

[0285] Use the J-TX (J-TX Used) field to indicate whether to request multi-AP collaborative transmission using the J-TX mode;

[0286] The C-UL MU-MIMO Used field is used to indicate whether to request multi-AP coordinated transmission using the C-UL MU MIMO mode.

[0287] Optionally, the value of the C-BF Used field is 1, indicating that the Shared AP is requested to perform multi-AP collaborative transmission in C-BF mode. In this case, the collaborative transmission request frame includes the C-BF Command field; the value of the C-BF Used field is 0, indicating that the Shared AP is not requested to perform multi-AP collaborative transmission in C-BF mode. In this case, the collaborative transmission request frame does not include the C-BF Command field.

[0288] Optionally, the value of the C-OFDMA Used field is 1, indicating that the Shared AP is requested to perform multi-AP collaborative transmission in C-OFDMA mode. In this case, the collaborative transmission request frame includes the C-OFDMA Command field; the value of the C-OFDMA Used field is 0, indicating that the Shared AP is not requested to perform multi-AP collaborative transmission in C-OFDMA mode. In this case, the collaborative transmission request frame does not include the C-OFDMA Command field.

[0289] Optionally, the value of the C-SR Used field is 1, indicating that the Shared AP is requested to perform multi-AP collaborative transmission in C-SR mode. In this case, the collaborative transmission request frame includes the C-SR Command field; the value of the C-SR Used field is 0, indicating that the Shared AP is not requested to perform multi-AP collaborative transmission in C-SR mode. In this case, the collaborative transmission request frame does not include the C-SR Command field.

[0290] Optionally, the value of the J-TX Used field is 1, indicating that the Shared AP is requested to perform multi-AP collaborative transmission in J-TX mode. In this case, the collaborative transmission request frame includes the J-TX Command field; the value of the J-TX Used field is 0, indicating that the Shared AP is not requested to perform multi-AP collaborative transmission in J-TX mode. In this case, the collaborative transmission request frame does not include the J-TX Command field.

[0291] Optionally, the value of the C-UL MU-MIMO Used field is 1, indicating that the Shared AP is requested to perform multi-AP collaborative transmission in C-UL MU-MIMO mode. In this case, the collaborative transmission request frame includes the C-UL MU-MIMO Command field; the value of the C-UL MU-MIMO Used field is 0, indicating that the Shared AP is not requested to perform multi-AP collaborative transmission in C-UL MU-MIMO mode. In this case, the collaborative transmission request frame does not include the C-UL MU-MIMO Command field.

[0292] In some embodiments, as shown in FIG10 , the Coordinated TX Scheme Used field includes:

[0293] The Coordinated TX Scheme Used subfield is used to indicate the coordinated transmission mode in which the first AP requests the at least one second AP to participate.

[0294] Optionally, the Coordinated TX Scheme Used field may be 8 bits, the Coordinated TX Scheme Used subfield may be 3 bits, and the remaining 5 bits are reserved bits, wherein different values ​​of the 3 bits are used to indicate different coordinated transmission modes requested by the first AP.

[0295] As an example, the 3-bit value of 001 indicates a request to participate in the C-BF mode, the value of 010 indicates a request to participate in the C-OFDMA mode, the value of 011 indicates a request to participate in the C-SR mode, the value of 100 indicates a request to participate in the J-TX mode, and the value of 101 indicates a request to participate in the C-UL MU-MIMO mode, where the values ​​000 and 110-111 are reserved values.

[0296] Optionally, when the 3 bits indicate requesting the C-BF mode, the collaborative transmission request frame includes the C-BF Command field, or, when the 3 bits indicate requesting the C-OFDMA mode, the collaborative transmission request frame includes the C-OFDMA Command field, or, when the 3 bits indicate requesting the C-SR mode, the collaborative transmission request frame includes the C-SR Command field, or, when the 3 bits indicate requesting the J-TX mode, the collaborative transmission request frame includes the J-TX Command field, or, when the 3 bits indicate requesting the C-UL MU-MIMO mode, the collaborative transmission request frame includes the C-UL MU-MIMO Command field.

[0297] In some embodiments, as shown in FIG11 , the C-BF Command field includes at least one of the following fields:

[0298] The Report CSI from Associated STAs field is used to indicate whether to report the CSI between the second AP and the associated STAs;

[0299] The Report CSI from OBSS STAs (Report CSI from OBSS STAs) field is used to indicate whether to report the CSI between the second AP and the OBSS STA.

[0300] In some embodiments, the C-BF Command field may be 8 bits, the Report CSI from Associated STAs field may be 1 bit, the Report CSI from OBSS STAs field may be 1 bit, and the remaining 6 bits are reserved bits.

[0301] Optionally, Report CSI from Associated STAs is set to 1 to indicate that the Shared AP needs to report the CSI between itself and the associated STAs; and is set to 0 to indicate that the Shared AP does not need to report the CSI between itself and the associated STAs.

[0302] Optionally, Report CSI from OBSS STAs is set to 1 to indicate that the Shared AP needs to report the CSI between it and the OBSS STA, and is set to 0 to indicate that the Shared AP does not need to report the CSI between it and the OBSS STA.

[0303] In some embodiments, as shown in FIG12 , the C-OFDMA Command field includes:

[0304] The Available RU / MRU field is used to indicate the RU or MRU shared by the first AP to the at least one second AP.

[0305] Optionally, the C-OFDMA Command field can be 0 or 2 bytes.

[0306] Optionally, the Available RU / MRU field can be 9 bits.

[0307] In some embodiments, as shown in FIG13 , the C-SR Command field includes at least one of the following fields:

[0308] The Report CSI from Associated STAs field is used to indicate whether to report the RSSI between the second AP and the associated STAs;

[0309] The Report CSI from OBSS STAs (RSSI from OBSS STAs) field is used to indicate whether to report the RSSI between the second AP and the OBSS STA.

[0310] In some embodiments, the C-SR Command field may be 8 bits, the Report CSI from Associated STAs field may be 1 bit, the Report CSI from OBSS STAs field may be 1 bit, and the remaining 6 bits are reserved bits.

[0311] Optionally, Report CSI from Associated STAs is set to 1 to indicate that the Shared AP needs to report the CSI between itself and the associated STAs; and is set to 0 to indicate that the Shared AP does not need to report the CSI between itself and the associated STAs.

[0312] Optionally, Report CSI from OBSS STAs is set to 1 to indicate that the Shared AP needs to report the RSSI between itself and the OBSS STA; and is set to 0 to indicate that the Shared AP does not need to report the RSSI between itself and the OBSS STA.

[0313] In some embodiments, as shown in FIG14 , the J-TX Command field includes at least one of the following fields:

[0314] The Report CSI from Associated STAs field is used to indicate whether to report the CSI between the second AP and the associated STAs;

[0315] The Report CSI from OBSS STAs (Report CSI from OBSS STAs) field is used to indicate whether to report the CSI between the second AP and the OBSS STA.

[0316] In some embodiments, the J-TX Command field may be 8 bits, the Report CSI from Associated STAs field may be 1 bit, the Report CSI from OBSS STAs field may be 1 bit, and the remaining 6 bits are reserved bits.

[0317] Optionally, Report CSI from Associated STAs is set to 1 to indicate that the Shared AP needs to report the CSI between itself and the associated STAs; and is set to 0 to indicate that the Shared AP does not need to report the CSI between itself and the associated STAs.

[0318] Optionally, Report CSI from OBSS STAs is set to 1 to indicate that the Shared AP needs to report the CSI between it and the OBSS STA, and is set to 0 to indicate that the Shared AP does not need to report the CSI between it and the OBSS STA.

[0319] In other embodiments of the present application, the first request frame can be implemented by a trigger frame. For example, the first request frame can be implemented by an existing trigger frame format, or a new trigger frame can be defined. For example, a new trigger frame type is defined to indicate that the trigger frame is used to request participation in multi-AP cooperative transmission or to trigger preparation for multi-AP cooperative transmission.

[0320] In some embodiments, when the first request frame is implemented through a trigger frame, the first request frame is also called a multi-AP preparation trigger frame.

[0321] FIG15 is a schematic diagram of a frame format of a trigger frame.

[0322] As shown in FIG15 , it may include the following fields:

[0323] Frame Control (occupies 2 bytes), Duration (occupies 2 bytes), Receiving Address (RA) (occupies 6 bytes), Transmission Address (TA) (occupies 6 bytes), Common Info (occupies a variable number of bytes), User Info List (occupies a variable number of bytes), FCS (occupies 4 bytes).

[0324] In some embodiments, the User Info List field may include at least one user information (User Info) field.

[0325] In some embodiments, the first indication information is carried in the Common Info field or the User Info field in the trigger frame.

[0326] In some embodiments, the target collaborative transmission command is carried in the Common Info field or the User Info field in the trigger frame.

[0327] In some embodiments, the trigger frame type (Trigger Type) field in the Common Info field can be used to indicate that the trigger frame is used to request at least one second AP to participate in the multi-AP cooperative transmission of the first target cooperative transmission mode. For example, the value of the Trigger Type field is a first value, which is used to indicate that the trigger frame is used to request the at least one second AP to participate in the multi-AP cooperative transmission of the first target cooperative transmission mode, wherein the first value is a reserved value of the Trigger Type field, for example, 8.

[0328] In some embodiments, the AID12 field in the User Info field can be used to indicate that the trigger frame is used to request at least one second AP to participate in the multi-AP cooperative transmission of the first target cooperative transmission mode. For example, the value of the AID12 field is a reserved value of the AID12 field, such as 2045.

[0329] Case 1: The first indication information and the target collaborative transmission command are carried through the Common Info field.

[0330] FIG16 shows a schematic frame format diagram of carrying the first indication information and the target collaborative transmission command through the Common Info field in the trigger frame.

[0331] As shown in FIG16 , the Common Info field may include a common information (Trigger Dependent Common Info) field of the trigger frame type, and the first indication information and the target collaborative transmission command are carried in the Trigger Dependent Common Info field.

[0332] In some embodiments, as shown in Figure 16, the trigger frame type (Trigger Type) field in the Common Info field can be used to indicate that the trigger frame is used to request at least one second AP to participate in the multi-AP cooperative transmission of the first target cooperative transmission mode. For example, the value of the Trigger Type field is a first value, which is used to indicate that the trigger frame is used to request the at least one second AP to participate in the multi-AP cooperative transmission of the first target cooperative transmission mode, wherein the first value is a reserved value of the Trigger Type field, for example, 8.

[0333] The Trigger Dependent Common Info field includes at least one of the following fields:

[0334] A Coordinated TX Scheme Used field is used to indicate a coordinated transmission mode in which the first AP requests the second AP to participate;

[0335] The Scheme Related Command field is used to indicate the collaborative transmission command corresponding to the first target collaborative transmission mode.

[0336] Optionally, the Coordinated TX Scheme Used field may be designed in the format of FIG. 9 or FIG. 10 , which will not be described in detail here for the sake of brevity.

[0337] In some embodiments, the Scheme Related Command field includes at least one of the following fields:

[0338] The Report CSI from Associated STAs field is used to indicate whether to report the CSI between the second AP and the associated STAs;

[0339] The Report CSI from OBSS STAs field is used to indicate whether to report the CSI between the second AP and the OBSS STA;

[0340] An Available RU / MRU field is used to indicate the RU or MRU shared by the first AP to the at least one second AP;

[0341] The Report RSSI from Associated STAs field is used to indicate whether to report the RSSI between the second AP and the associated STAs;

[0342] The Report RSSI from OBSS STAs field is used to indicate whether to report the RSSI between the second AP and the OBSS STA.

[0343] In some embodiments, the specific fields included in the Scheme Related Command field are related to the coordinated transmission mode indicated by the Coordinated TX Scheme Used field.

[0344] As shown in FIG17 , when the first target cooperative transmission mode includes the C-BF mode, the Scheme Related Command field includes at least one of the following fields:

[0345] The Report CSI from Associated STAs field is used to indicate whether to report the CSI between the second AP and the associated STAs;

[0346] The Report CSI from OBSS STAs (Report CSI from OBSS STAs) field is used to indicate whether to report the CSI between the second AP and the OBSS STA.

[0347] As shown in FIG18 , when the first target cooperative transmission mode includes the J-TX mode, the Scheme Related Command field includes at least one of the following fields:

[0348] The Report CSI from Associated STAs field is used to indicate whether to report the CSI between the second AP and the associated STAs;

[0349] The Report CSI from OBSS STAs (Report CSI from OBSS STAs) field is used to indicate whether to report the CSI between the second AP and the OBSS STA.

[0350] As shown in FIG19 , when the first target cooperative transmission mode includes the C-OFDMA mode, the Scheme Related Command field includes:

[0351] The Available RU / MRU field is used to indicate the RU or MRU shared by the first AP to the at least one second AP.

[0352] As shown in FIG20 , when the first target cooperative transmission mode includes the C-SR mode, the Scheme Related Command field includes at least one of the following fields:

[0353] The Report RSSI from Associated STAs field is used to indicate whether to report the RSSI between the second AP and the associated STAs;

[0354] The Report CSI from OBSS STAs (RSSI from OBSS STAs) field is used to indicate whether to report the RSSI between the second AP and the OBSS STA.

[0355] It should be understood that Figures 17 to 20 only illustrate the format design of the Scheme Related Command field using the example of the first target collaborative transmission mode including one collaborative transmission mode. When the first target collaborative transmission mode includes multiple collaborative transmission modes, it may include more fields. For example, the Scheme Related Command field may adopt the format design shown in Figure 27.

[0356] Case 2: The first indication information is carried through the Common Info field, and the target collaborative transmission command is carried through the User Info field.

[0357] Optionally, the target collaborative transmission command can be carried through the existing User Info field, or a new User Info field can be newly defined to carry the target collaborative transmission command, which is not limited in this application.

[0358] Case 2-1: The first indication information is carried through the Common Info field, and the target collaborative transmission command is carried through the Special User Info field.

[0359] Figure 21 shows a schematic frame format diagram of carrying the first indication information through the Common Info field in the trigger frame. For example, the first indication information is carried through the Trigger Dependent Common Info field in the Common Info field.

[0360] In some embodiments, as shown in Figure 21, the trigger frame type (Trigger Type) field in the Common Info field can be used to indicate that the trigger frame is used to request at least one second AP to participate in the multi-AP cooperative transmission of the first target cooperative transmission mode. For example, the value of the Trigger Type field is a first value, which is used to indicate that the trigger frame is used to request the at least one second AP to participate in the multi-AP cooperative transmission of the first target cooperative transmission mode, wherein the first value is a reserved value of the Trigger Type field, for example, 8.

[0361] As shown in FIG21 , the Trigger Dependent Common Info field includes:

[0362] The Coordinated TX Scheme Used field is used to indicate the coordinated transmission mode in which the first AP requests the second AP to participate.

[0363] Optionally, the Coordinated TX Scheme Used field may be designed in the format of FIG. 9 or FIG. 10 , which will not be described in detail here for the sake of brevity.

[0364] Figure 22 shows a schematic frame format diagram of the Special User Info field.

[0365] For example, the target collaborative transmission command is carried through the Trigger Dependent User Info field in the Special User Info field.

[0366] As shown in Figure 22, the Special User Info field includes an AID12 field, and the value of the AID12 field is a second value, which is used to indicate that the first request frame is used to request the at least one second AP to participate in multi-AP cooperative transmission in the first target cooperative transmission mode, and the second value is a reserved value of the AID12 field. For example, 2045.

[0367] Optionally, the Special User Info field may be 40 bits long.

[0368] In some embodiments, the Trigger Dependent User Info field includes at least one of the following fields:

[0369] The Report CSI from Associated STAs field is used to indicate whether to report the CSI between the second AP and the associated STAs;

[0370] The Report CSI from OBSS STAs field is used to indicate whether to report the CSI between the second AP and the OBSS STA;

[0371] An Available RU / MRU field is used to indicate the RU or MRU shared by the first AP to the at least one second AP;

[0372] The Report RSSI from Associated STAs field is used to indicate whether to report the RSSI between the second AP and the associated STAs;

[0373] The Report RSSI from OBSS STAs field is used to indicate whether to report the RSSI between the second AP and the OBSS STA.

[0374] In some embodiments, the specific fields included in the Trigger Dependent User Info field are related to the collaborative transmission mode indicated by the Trigger Dependent Common Info field in the Common Info field.

[0375] In the case where the coordinated transmission mode indicated by the Coordinated TX Scheme Used field includes the C-BF mode, as shown in FIG23 , the Trigger Dependent User Info field includes at least one of the following fields:

[0376] The Report CSI from Associated STAs field is used to indicate whether to report the CSI between the second AP and the associated STAs;

[0377] The Report CSI from OBSS STAs (Report CSI from OBSS STAs) field is used to indicate whether to report the CSI between the second AP and the OBSS STA.

[0378] In the case where the coordinated transmission mode indicated by the Coordinated TX Scheme Used field includes the J-TX mode, as shown in FIG24 , the Trigger Dependent User Info field includes at least one of the following fields:

[0379] The Report CSI from Associated STAs field is used to indicate whether to report the CSI between the second AP and the associated STAs;

[0380] The Report CSI from OBSS STAs (Report CSI from OBSS STAs) field is used to indicate whether to report the CSI between the second AP and the OBSS STA.

[0381] In the case where the coordinated transmission mode indicated by the Coordinated TX Scheme Used field includes the C-OFDMA mode, as shown in FIG25 , the Trigger Dependent User Info field includes:

[0382] The Available RU / MRU field is used to indicate the RU or MRU shared by the first AP to the at least one second AP.

[0383] In the case where the coordinated transmission mode indicated by the Coordinated TX Scheme Used field includes the C-SR mode, as shown in FIG26 , the Trigger Dependent User Info field includes at least one of the following fields:

[0384] The Report RSSI from Associated STAs field is used to indicate whether to report the RSSI between the second AP and the associated STAs;

[0385] The Report CSI from OBSS STAs (RSSI from OBSS STAs) field is used to indicate whether to report the RSSI between the second AP and the OBSS STA.

[0386] It should be understood that Figures 23 to 26 only illustrate the format design of the Trigger Dependent User Info field using the example where the first target collaborative transmission mode includes one collaborative transmission mode. When the first target collaborative transmission mode includes multiple collaborative transmission modes, it may include more fields. For example, the Scheme Related Command field may adopt the format design shown in Figure 27.

[0387] Case 2-2: The first indication information is carried by the Common Info field, and the target coordinated transmission command is carried by the newly defined User Info field. For example, the newly defined Multi-AP User Info field is used to carry the target coordinated transmission command.

[0388] In case 2-2, the first indication information can be carried by the Trigger Dependent Common Info field in the Common Info field. For example, the frame format diagram shown in Figure 21 can be used. For specific implementation, refer to the relevant description of Figure 21, which will not be repeated here for the sake of brevity.

[0389] FIG27 is a schematic format diagram of a Multi-AP User Info field provided in an embodiment of the present application.

[0390] As shown in Figure 27, the Multi-AP User Info field may include an AID12 field, where the value of the AID12 field is a third value, indicating that the first request frame is used to request the at least one second AP to participate in the multi-AP collaborative transmission of the first target collaborative transmission mode, and the third value is a reserved value of the AID12 field, for example, 2045.

[0391] As shown in Figure 27, the Multi-AP User Info field includes at least one of the following fields:

[0392] The Report CSI from Associated STAs field is used to indicate whether to report the CSI between the second AP and the associated STAs;

[0393] The Report CSI from OBSS STAs field is used to indicate whether to report the CSI between the second AP and the OBSS STA;

[0394] An Available RU / MRU field is used to indicate the RU or MRU shared by the first AP to the at least one second AP;

[0395] The Report RSSI from Associated STAs field is used to indicate whether to report the RSSI between the second AP and the associated STAs;

[0396] The Report RSSI from OBSS STAs field is used to indicate whether to report the RSSI between the second AP and the OBSS STA.

[0397] Case 3: Both the first indication information and the target collaborative transmission command are carried through the User Info field.

[0398] For example, the first indication information and the target collaborative transmission command may be carried by the Trigger Dependent User Info field in the User Info field.

[0399] FIG28 shows a schematic frame format diagram of a User Info field provided in an embodiment of the present application.

[0400] As shown in Figure 28, the User Info field includes an AID12 field, and the value of the AID12 field is a second value, which is used to indicate that the first request frame is used to request the at least one second AP to participate in multi-AP cooperative transmission in the first target cooperative transmission mode, and the second value is a reserved value of the AID12 field. For example, 2045.

[0401] Optionally, the User Info field may be 40 bits long.

[0402] In some embodiments, as shown in FIG28 , the Trigger Dependent User Info field includes at least one of the following fields:

[0403] A Coordinated TX Scheme Used field is used to indicate a coordinated transmission mode in which the first AP requests the second AP to participate;

[0404] The Scheme Related Command field is used to indicate the collaborative transmission command corresponding to the first target collaborative transmission mode.

[0405] Optionally, the design of the Coordinated TX Scheme Used field and the Scheme Related Command field refers to the format design of the Coordinated TX Scheme Used field and the Scheme Related Command field in Figure 16, and for the sake of brevity, it is not repeated here.

[0406] It should be understood that the meanings of the Coordinated TX Scheme Used and its various subfields in Figures 16 to 28, as well as the collaborative transmission command field and its various subfields, refer to the explanations of the corresponding fields in Figures 8 to 14. For the sake of brevity, they will not be repeated here.

[0407] 29 to 41 , the frame structure design of the first response frame is described.

[0408] FIG29 shows a schematic frame format diagram of an example of a collaborative transmission response frame implemented through a control frame.

[0409] As shown in FIG29 , it may include the following fields:

[0410] Frame Control (occupies 2 bytes), Duration (occupies 2 bytes), Receiving Address (RA) (occupies 6 bytes), Transmission Address (TA) (occupies 6 bytes), Coordinated TX Response (occupies variable number of bytes), FCS (occupies 4 bytes).

[0411] In some embodiments, the first response frame includes a collaborative transmission response field, and the second indication information and / or the target collaborative transmission information is carried in the collaborative transmission response field.

[0412] In some embodiments, as shown in FIG29 , the Coordinated TX Response field includes at least one of the following fields:

[0413] an accepted coordinated transmission mode field (Coordinated TX Scheme Accepted field), used to indicate the coordinated transmission mode in which the second AP participates, that is, used to carry second indication information;

[0414] Participant STA List field, used to indicate the STAs participating in the second target cooperative transmission mode;

[0415] C-BF Info.field: indicates the collaborative transmission information corresponding to the C-BF mode.

[0416] C-OFDMA information field (C-OFDMA Info.field), used to indicate the coordinated transmission information corresponding to the C-OFDMA mode;

[0417] C-SR Info.field: indicates the coordinated transmission information corresponding to the C-SR mode.

[0418] J-TX information field (J-TX Info.field), used to indicate the coordinated transmission information corresponding to the J-TX mode;

[0419] The C-UL MU-MIMO information field (C-UL MU-MIMO Info.field) is used to indicate the collaborative transmission information corresponding to the C-UL MU-MIMO mode.

[0420] In some embodiments, as shown in FIG30 , the Coordinated TX Scheme Accepted field includes at least one of the following fields:

[0421] The C-BF Accept field is used to indicate whether to accept multi-AP collaborative transmission in C-BF mode;

[0422] The C-OFDMA Accept field is used to indicate whether to accept multi-AP collaborative transmission in C-OFDMA mode;

[0423] The C-SR Accept field is used to indicate whether to accept multi-AP collaborative transmission in C-SR mode;

[0424] Accept the J-TX (J-TX Accept) field, which is used to indicate whether to accept multi-AP collaborative transmission in J-TX mode;

[0425] The C-UL MU-MIMO Accept field is used to indicate whether to accept the coordinated transmission in the C-UL MU MIMO mode.

[0426] Optionally, the value of the C-BF Accept field is 1, indicating acceptance of multi-AP collaborative transmission in C-BF mode. In this case, the collaborative transmission response frame includes C-BF Info.field; the value of the C-BF Accept field is 0, indicating rejection of multi-AP collaborative transmission in C-BF mode. In this case, the collaborative transmission response frame does not include C-BF Info.field.

[0427] Optionally, the value of the C-OFDMA Accept field is 1, indicating acceptance of multi-AP collaborative transmission in C-OFDMA mode. In this case, the collaborative transmission response frame includes C-OFDMA Info.field; the value of the C-OFDMA Accept field is 0, indicating rejection of multi-AP collaborative transmission in C-OFDMA mode. In this case, the collaborative transmission response frame does not include C-OFDMA Info.field.

[0428] Optionally, the value of the C-SR Accept field is 1, indicating acceptance of multi-AP collaborative transmission in C-SR mode. In this case, the collaborative transmission response frame includes C-SR Info.field; the value of the C-SR Accept field is 0, indicating rejection of multi-AP collaborative transmission in C-SR mode. In this case, the collaborative transmission response frame does not include C-SR Info.field.

[0429] Optionally, the value of the J-TX Accept field is 1, indicating acceptance of multi-AP collaborative transmission in J-TX mode. In this case, the collaborative transmission response frame includes J-TX Info.field; the value of the J-TX Accept field is 0, indicating rejection of multi-AP collaborative transmission in J-TX mode. In this case, the collaborative transmission response frame does not include J-TX Info.field.

[0430] Optionally, the value of the C-UL MU-MIMO Accept field is 1, indicating acceptance of multi-AP collaborative transmission in C-UL MU-MIMO mode. In this case, the collaborative transmission response frame includes C-UL MU-MIMO Info.field; the value of the C-UL MU-MIMO Accept field is 0, indicating rejection of multi-AP collaborative transmission in C-UL MU-MIMO mode. In this case, the collaborative transmission response frame does not include C-UL MU-MIMO Info.field.

[0431] In some embodiments, the Participant STA List field may only exist when C-BF Accepted=1 or C-SR Accepted=1 or J-TX Accepted=1 or C-UL MU-MIMO Accepted=1. When the Coordinated TX Scheme Accepted field indicates C-OFDMA Accepted=1, the Participant STA List field may not exist.

[0432] In some embodiments, as shown in FIG31 , the Coordinated TX Scheme Accepted field includes:

[0433] The Coordinated TX Scheme Accepted subfield is used to indicate the coordinated transmission mode in which the second AP receives participation.

[0434] Optionally, the Coordinated TX Scheme Accepted field may be 8 bits, the Coordinated TX Scheme Accepted subfield may be 3 bits, and the remaining 5 bits are reserved bits, wherein different values ​​of the 3 bits are used to indicate the coordinated transmission mode in which the second AP receives and participates.

[0435] As an example, the 3-bit value of 001 indicates acceptance of participation in C-BF mode, the value of 010 indicates acceptance of participation in C-OFDMA mode, the value of 011 indicates acceptance of participation in C-SR mode, the value of 100 indicates acceptance of participation in J-TX mode, and the value of 101 indicates acceptance of participation in C-UL MU-MIMO mode, where the values ​​000 and 110-111 are reserved values.

[0436] Optionally, when the 3 bits indicate acceptance of the C-BF mode, the collaborative transmission response frame includes C-BF Info.field, or, when the 3 bits indicate acceptance of the C-OFDMA mode, the collaborative transmission response frame includes C-OFDMA Info.field, or, when the 3 bits indicate acceptance of the C-SR mode, the collaborative transmission response frame includes C-SR Info.field, or, when the 3 bits indicate acceptance of the J-TX mode, the collaborative transmission response frame includes J-TX Info.field, or, when the 3 bits indicate acceptance of the C-UL MU-MIMO mode, the collaborative transmission response frame includes C-UL MU-MIMO Info.field.

[0437] In some embodiments, as shown in FIG32 , the Participant STA List field may include at least one of the following fields:

[0438] The STA number (Number of STAs) field is used to indicate the number of APs participating in multi-AP collaborative transmission;

[0439] At least one STA ID field is used to indicate a STA participating in multi-AP coordinated transmission.

[0440] For example, the IDs of k STAs participating in multi-AP cooperative transmission may be included, where k is a positive integer.

[0441] In some embodiments, as shown in FIG33 , the C-BF Info.field includes at least one of the following fields:

[0442] At least one CSI field is used to indicate CSI between the second AP and at least one STA.

[0443] Optionally, the at least one CSI field may be used to carry r pieces of CSI information, where the r pieces of CSI information are CSI information between the second AP and r STAs, and r is a positive integer.

[0444] In some embodiments, the r CSI information may include all CSI obtained by the second AP in the channel detection phase, or may also include CSI between the second AP and k STAs (i.e., STAs indicated by the Participant STA List field) participating in the multi-AP collaborative transmission in the C-BF mode, that is, r may be equal to k.

[0445] In some embodiments, the CSI field may occupy a bits, where a is a positive integer and the size of a may be determined according to the size of the carried CSI information.

[0446] In some embodiments, as shown in FIG34 , the J-TX Info.field includes at least one of the following fields:

[0447] At least one CSI field is used to indicate CSI between the second AP and at least one STA.

[0448] Optionally, the at least one CSI field may be used to carry r pieces of CSI information, where the r pieces of CSI information are CSI information between the second AP and r STAs, and r is a positive integer.

[0449] In some embodiments, the r CSI information may include all CSI obtained by the second AP in the channel detection phase, or may also include CSI between the second AP and k STAs (i.e., STAs indicated by the Participant STA List field) participating in the multi-AP collaborative transmission in the J-TX mode, that is, r may be equal to k.

[0450] In some embodiments, the CSI field may occupy a bits, where a is a positive integer and the size of a may be determined according to the size of the carried CSI information.

[0451] In some embodiments, as shown in FIG35 , the C-UL MU-MIMO Info.field includes:

[0452] The Selected RU / MRU field is used to indicate the RU / MRU selected by the second AP.

[0453] In some embodiments, as shown in FIG36 , the C-SR information field (C-SR Info.field) includes at least one of the following fields:

[0454] At least one RSSI field is used to indicate the RSSI between the second AP and at least one STA.

[0455] Optionally, the at least one RSSI field may be used to carry r pieces of RSSI information, where the r pieces of RSSI information are RSSI information between the second AP and r STAs, and r is a positive integer.

[0456] In some embodiments, the r RSSI information may include all RSSIs obtained by the second AP, or may also include the RSSI between the second AP and the k STAs participating in the multi-AP collaborative transmission in the C-SR mode (i.e., the STAs indicated by the Participant STA List field), that is, r may be equal to k.

[0457] In some embodiments, the RSSI field may occupy b bits, where b is a positive integer, and the size of b may be determined according to the size of the carried RSSI information.

[0458] FIG37 is a schematic diagram of the frame structure of implementing the first response frame through the QoS Null frame.

[0459] For example, as shown in FIG37 , the QoS Null frame may include an HT Control field. The HT Control field may occupy 4 bytes. The HT Control field may include the following three variants depending on the values ​​of the B0 and B1 bits:

[0460] HT Variant, VHT Variant, HE Variant.

[0461] For example, when B0 is 0, the HT Control field is HT Variant; when B0 is 1 and B1 is 0, the HT Control field is VHT Variant; when B0 is 1 and B1 is 1, the HT Control field is HE Variant.

[0462] When the HT Control field is HE Variant, the HT Control field may include an aggregation control (A-Control) field.

[0463] In some embodiments, the second indication information and / or the target collaborative transmission information is carried in an A-Control field in the QoS Null frame. Specifically, the A-Control field includes a Control Identification (ID) field and a Control Information (Control Information) field, and the second indication information and / or the target collaborative transmission information is carried in the Control Information field.

[0464] In some embodiments, the value of the Control ID field is a fourth value, which is used to indicate that the QoS Null frame is used to carry collaborative transmission response information. The fourth value is a reserved value of the Control ID field, for example, 7.

[0465] As shown in FIG37 , the Control Information field includes at least one of the following:

[0466] An accepted coordinated transmission mode field (Coordinated TX Scheme Accepted field), used to indicate the coordinated transmission mode in which the second AP participates;

[0467] The coordinated TX scheme information field (Coordinated TX Scheme Info field) is used to indicate the target coordinated transmission information.

[0468] Optionally, the Coordinated TX Scheme Accepted field may be designed using the format of FIG30 or FIG31 .

[0469] In some embodiments, when the second AP receives a multi-AP coordinated transmission participating in a C-BF or J-TX mode, the Coordinated TX Scheme Info field includes:

[0470] The Participating STA List field is used to indicate the IDs of STAs participating in the C-BF mode or J-TX mode.

[0471] For example, as shown in FIG38 , the Coordinated TX Scheme Info field may include an STA AID11 field for reporting the AID of the associated STA participating in the C-BF mode and / or the J-TX mode.

[0472] For another example, as shown in Figure 39, the Coordinated TX Scheme Info field may also include two STA AID11 fields, such as the AID11 field of the participating associated STA and the AID11 field of the participating OBSS STA, wherein the AID11 field of the participating associated STA is used to report the AID of the associated STA participating in the C-BF mode and / or J-TX mode, and the AID11 field of the participating OBSS STA is used to report the AID of the OBSS STA participating in the C-BF mode and / or J-TX mode.

[0473] Optionally, when the second AP is associated with a STA and participates in the C-BF mode and / or J-TX mode, the second AP may use the frame structure shown in FIG38 to report the STA information participating in the C-BF mode and / or J-TX mode, or may use the frame structure shown in FIG39 to report the associated STA and OBSS STA participating in the C-BF mode and / or J-TX mode.

[0474] In some embodiments, when the second AP receives multi-AP coordinated transmission in C-OFDMA mode, as shown in FIG40 , the Coordinated TX Scheme Info field includes:

[0475] The Selected RU / MRU field is used to indicate the RU / MRU selected by the second AP.

[0476] In some embodiments, when the second AP receives a multi-AP coordinated transmission in C-SR mode, as shown in FIG41 , the Coordinated TX Scheme Info field includes at least one of the following fields:

[0477] The RSSI from Associated STA field is used to indicate the RSSI between the second AP and at least one associated STA participating in the C-SR mode;

[0478] The RSSI from Unassociated STA (OBSS STA) field is used to indicate the RSSI between the second AP and at least one OBSS STA participating in the C-SR mode.

[0479] In some embodiments of the present application, the first notification frame may be implemented through a control frame, or may also be implemented through other frames such as a trigger frame or a management frame, and the present application does not limit this.

[0480] 42 to 49 , the frame structure design of the first notification frame is described.

[0481] FIG42 shows a schematic frame format diagram of an example of a collaborative transmission notification frame implemented through a control frame.

[0482] As shown in FIG42 , it may include the following fields:

[0483] Frame Control (occupies 2 bytes), Duration (occupies 2 bytes), Receiving Address (RA) (occupies 6 bytes), Transmission Address (TA) (occupies 6 bytes), Coordinated TX Announce (occupies variable number of bytes), FCS (occupies 4 bytes).

[0484] In some embodiments, the first notification information is carried in a Coordinated TX Announce field.

[0485] As shown in FIG42 , the collaborative transmission notification field includes at least one of the following fields:

[0486] The Coordinated TX Scheme Adopted field is used to indicate the third target coordinated transmission mode, or the upcoming multi-AP coordinated transmission mode;

[0487] An AP list field (Participant AP List field), used to indicate APs participating in the third target cooperative transmission mode;

[0488] C-BF Parameters field, used to indicate the collaborative transmission parameters corresponding to the C-BF mode;

[0489] C-OFDMA Parameters field, used to indicate the coordinated transmission parameters corresponding to the C-OFDMA mode;

[0490] C-SR Parameters field, used to indicate the coordinated transmission parameters corresponding to the C-SR mode;

[0491] J-TX Parameters field, used to indicate the coordinated transmission parameters corresponding to the J-TX mode;

[0492] The C-UL MU-MIMO Parameters field is used to indicate the coordinated transmission parameters corresponding to the C-UL MU-MIMO mode.

[0493] In some embodiments, as shown in FIG43 , the Coordinated TX Scheme Adopted field includes at least one of the following fields:

[0494] The C-BF (C-BF Adopted) field is used to indicate whether to adopt multi-AP collaborative transmission in C-BF mode;

[0495] The C-OFDMA (C-OFDMA Adopted) field is used to indicate whether to use the C-OFDMA mode for multi-AP collaborative transmission.

[0496] The C-SR (C-SR Adopted) field is used to indicate whether to adopt multi-AP collaborative transmission in C-SR mode;

[0497] The J-TX (J-TX Adopted:) field is used to indicate whether to use the multi-AP collaborative transmission in J-TX mode;

[0498] The C-UL MU MIMO (C-UL MU-MIMO Adopted) field is used to indicate whether multi-AP collaborative transmission in the C-UL MU MIMO mode is adopted.

[0499] Optionally, the value of the C-BF Adopted field is 1, indicating that multi-AP collaborative transmission in C-BF mode is performed. In this case, the collaborative transmission notification frame includes the C-BF Parameters field; the value of the C-BF Adopted field is 0, indicating that multi-AP collaborative transmission in C-BF mode is not performed. In this case, the collaborative transmission notification frame does not include the C-BF Parameters field.

[0500] Optionally, the value of the C-OFDMA Adopted field is 1, indicating that multi-AP collaborative transmission in C-OFDMA mode is performed. In this case, the collaborative transmission notification frame includes the C-OFDMA Parameters field; the value of the C-OFDMA Adopted field is 0, indicating that multi-AP collaborative transmission in C-OFDMA mode is not performed. In this case, the collaborative transmission notification frame does not include the C-OFDMA Parameters field.

[0501] Optionally, the value of the C-SR Adopted field is 1, indicating that multi-AP collaborative transmission in C-SR mode is performed. In this case, the collaborative transmission notification frame includes the C-SR Parameters field; the value of the C-SR Adopted field is 0, indicating that multi-AP collaborative transmission in C-SR mode is not performed. In this case, the collaborative transmission notification frame does not include the C-SR Parameters field.

[0502] Optionally, the J-TX Adopted field value is 1, indicating that multi-AP collaborative transmission in J-TX mode is performed. In this case, the collaborative transmission notification frame includes the J-TX Parameters field; the J-TX Adopted field value is 0, indicating that multi-AP collaborative transmission in J-TX mode is not performed. In this case, the collaborative transmission notification frame does not include the J-TX Parameters field.

[0503] Optionally, the value of the C-UL MU-MIMO Adopted field is 1, indicating that multi-AP collaborative transmission in C-UL MU-MIMO mode is performed. In this case, the collaborative transmission notification frame includes the C-UL MU-MIMO Parameters field; the value of the C-UL MU-MIMO Adopted field is 0, indicating that multi-AP collaborative transmission in C-UL MU-MIMO mode is not performed. In this case, the collaborative transmission notification frame does not include the C-UL MU-MIMO Parameters field.

[0504] In some embodiments, as shown in FIG44 , the Coordinated TX Scheme Adopted field includes:

[0505] Coordinated TX Scheme Adopted subfield is used to indicate the adopted coordinated transmission mode.

[0506] Optionally, the Coordinated TX Scheme Adopted field may be 8 bits, the Coordinated TX Scheme Adopted subfield may be 3 bits, and the remaining 5 bits are reserved bits. Different values ​​of the 3 bits are used to indicate different coordinated transmission modes.

[0507] As an example, the 3-bit value of 001 indicates multi-AP collaborative transmission in C-BF mode, the value of 010 indicates multi-AP collaborative transmission in C-OFDMA mode, the value of 011 indicates multi-AP collaborative transmission in C-SR mode, the value of 100 indicates multi-AP collaborative transmission in J-TX mode, and the value of 101 indicates a request to participate in multi-AP collaborative transmission in C-UL MU-MIMO mode, where the values ​​000 and 110-111 are reserved values.

[0508] Optionally, when the 3 bits indicate that the C-BF mode is to be performed, the collaborative transmission notification frame includes the C-BF Parameters field, or when the 3 bits indicate that the C-OFDMA mode is to be requested, the collaborative transmission request frame includes the C-OFDMA Parameters field, or when the 3 bits indicate that the C-SR mode is to be requested, the collaborative transmission request frame includes the C-SR Parameters field, or when the 3 bits indicate that the J-TX mode is to be requested, the collaborative transmission request frame includes the J-TX Parameters field, or when the 3 bits indicate that the C-UL MU-MIMO mode is to be requested, the collaborative transmission request frame includes the C-UL MU-MIMO Parameters field.

[0509] In some embodiments, as shown in FIG45 , the Participant AP List field includes at least one of the following fields:

[0510] The AP number (Number of APs) field is used to indicate the number of APs participating in multi-AP collaborative transmission;

[0511] At least one AP ID field is used to indicate the APs participating in multi-AP collaborative transmission.

[0512] For example, it may include IDs of m APs participating in multi-AP cooperative transmission, where m is a positive integer.

[0513] In some embodiments, as shown in FIG46 , the C-BF / J-TX parameter field includes:

[0514] At least one transmission matrix (Tx Matrix) field corresponds to at least one AP participating in the C-BF mode and is used to indicate the transmission matrix used by the AP participating in the C-BF mode.

[0515] In some embodiments, the Tx Matrix field may occupy c bits, where c is a positive integer and the size of c may be determined according to the size of the Tx Matrix.

[0516] For example, it may include Tx Matrixes corresponding to m APs respectively.

[0517] In some embodiments, as shown in FIG47 , the C-SR parameter field includes:

[0518] At least one transmit power (Tx Power) field corresponds to at least one AP participating in the C-SR mode and is used to indicate the transmit power used by the AP participating in the C-SR mode.

[0519] For example, it may include Tx Power corresponding to m APs respectively.

[0520] In some embodiments, as shown in FIG48 , the C-UL MU-MIMO parameter field includes:

[0521] At least one SS Allocation field corresponds to at least one AP participating in the C-UL MU-MIMO mode and is used to indicate SS allocation information used by the AP participating in the C-UL MU-MIMO mode.

[0522] For example, it may include SS Allocations corresponding to m APs respectively.

[0523] In some embodiments, as shown in FIG48 , the C-OFDMA parameter field includes:

[0524] At least one RU / MRU field corresponds to at least one AP participating in the C-OFDMA mode and is used to indicate the RU or MRU used by the AP participating in the C-OFDMA mode.

[0525] For example, RUs / MRUs corresponding to m APs may be included.

[0526] In some embodiments, the first notification information may be sent via a MAP transmission trigger frame, that is, the MAP transmission trigger frame is used to carry the first notification information and to transmit multi-AP cooperative transmission.

[0527] In summary, the first AP can request at least one second AP to participate in the multi-AP collaborative transmission of the first target collaborative transmission mode through a first request frame, and indicate the collaborative transmission command related to the first target collaborative transmission mode to the at least one second AP, thereby realizing a unified multi-AP collaborative preparation process, which is conducive to reducing the complexity of multi-AP collaborative transmission.

[0528] Furthermore, the second AP can respond to whether to participate in the multi-AP collaborative transmission requested by the first AP through a first response frame. If participating, the second AP can report relevant collaborative transmission information to the first AP, thereby realizing a unified multi-AP collaborative preparation process, which is conducive to reducing the complexity of multi-AP collaborative transmission.

[0529] Furthermore, the first AP can notify the second AP participating in the multi-AP collaborative transmission of the multi-AP collaborative transmission mode and related collaborative transmission parameters through the first notification frame, thereby realizing a unified multi-AP collaborative preparation process, which is conducive to reducing the complexity of multi-AP collaborative transmission.

[0530] The above text, in combination with Figures 4 to 49, describes in detail the method embodiment of the present application. The following text, in combination with Figures 50 to 54, describes in detail the device embodiment of the present application. It should be understood that the device embodiment and the method embodiment correspond to each other, and similar descriptions can refer to the method embodiment.

[0531] FIG50 shows a schematic block diagram of a first access point AP 400 according to an embodiment of the present application. As shown in FIG50 , the first AP 400 includes:

[0532] The communication unit 410 is used to send a first request frame to at least one second AP, where the first request frame includes first indication information and / or a target collaborative transmission command, wherein the first indication information is used to indicate a first target collaborative transmission mode, where the first target collaborative transmission mode is a collaborative transmission mode in which the first AP requests at least one second AP to participate, and the target collaborative transmission command is a collaborative transmission command corresponding to the first target collaborative transmission mode.

[0533] In some embodiments, the first indication information indicates the first target collaborative transmission mode in a bitmap manner.

[0534] In some embodiments, the first indication information includes multiple bits, each bit corresponds to one of multiple collaborative transmission modes, and the value of each bit is used to indicate whether the first AP requests at least one second AP to participate in the corresponding collaborative transmission mode.

[0535] In some embodiments, different values ​​of the first indication information are used to indicate a collaborative transmission mode in which the first AP requests at least one second AP to participate.

[0536] In some embodiments, the collaborative transmission command corresponding to the first target collaborative transmission mode includes at least one of the following information:

[0537] Indication information of whether to report the channel state information CSI between the second AP and the associated station STA;

[0538] Indication information of whether to report the CSI between the second AP and the overlapping basic service set OBSS STA;

[0539] Available resource units RU or multiple resource units MRU shared by the first AP to at least one second AP;

[0540] Whether to report the RSSI (received signal strength indicator) between the second AP and the associated STA;

[0541] Indication information of whether to report the RSSI between the second AP and the OBSS STA.

[0542] In some embodiments, when the first target coordinated transmission mode includes a coordinated beamforming (C-BF) mode, the first request frame includes a coordinated transmission command corresponding to the C-BF mode, and the coordinated transmission command corresponding to the C-BF mode includes at least one of the following information:

[0543] Indication information of whether to report CSI between the second AP and the associated STAs;

[0544] Indication information of whether to report the CSI between the second AP and the OBSS STA.

[0545] In some embodiments, when the first target coordinated transmission mode includes a joint transmission (J-TX) mode, the first request frame includes a coordinated transmission command corresponding to the J-TX mode, and the coordinated transmission command corresponding to the J-TX mode includes at least one of the following information:

[0546] Indication information of whether to report CSI between the second AP and the associated STAs;

[0547] Indication information of whether to report the CSI between the second AP and the OBSS STA.

[0548] In some embodiments, when the first target coordinated transmission mode includes a coordinated orthogonal frequency division multiple access (C-OFDMA) mode, the first request frame includes a coordinated transmission command corresponding to the C-OFDMA mode, and the coordinated transmission command corresponding to the C-OFDMA mode includes:

[0549] The first AP shares available RUs or MRUs with at least one second AP.

[0550] In some embodiments, when the first target coordinated transmission mode includes a coordinated spatial multiplexing (C-SR) mode, the first request frame includes a coordinated transmission command corresponding to the C-SR mode, and the coordinated transmission command corresponding to the C-SR mode includes at least one of the following information:

[0551] Indication information of whether to report the RSSI between the second AP and the associated STA;

[0552] Indication information of whether to report the RSSI between the second AP and the OBSS STA.

[0553] In some embodiments, when the first target coordinated transmission mode includes a coordinated uplink multi-user multiple-input multiple-output (C-UL) MU-MIMO mode, the first request frame includes a coordinated transmission command corresponding to the C-UL MU-MIMO mode.

[0554] In some embodiments, the first request frame is a control frame.

[0555] In some embodiments, the first request frame includes a coordinated transmission request field, and the first indication information and / or the target coordinated transmission command are carried in the coordinated transmission request field.

[0556] In some embodiments, the cooperative transmission request field includes at least one of the following fields:

[0557] A cooperative transmission mode used field is used to indicate a cooperative transmission mode in which the first AP requests at least one second AP to participate;

[0558] The C-BF command field is used to indicate the collaborative transmission command corresponding to the C-BF mode;

[0559] The C-OFDMA command field is used to indicate the coordinated transmission command corresponding to the C-OFDMA mode;

[0560] The C-SR command field is used to indicate the coordinated transmission command corresponding to the C-SR mode;

[0561] The J-TX command field is used to indicate the collaborative transmission command corresponding to the J-TX mode;

[0562] The C-BF command field is used to indicate the collaborative transmission command corresponding to the C-BF mode;

[0563] The C-UL MU-MIMO command field is used to indicate the coordinated transmission command corresponding to the C-UL MU-MIMO mode.

[0564] In some embodiments, the C-BF command field includes at least one of the following fields:

[0565] The CSI field for reporting associated STAs is used to indicate whether to report the CSI between the second AP and the associated STAs;

[0566] The CSI field for reporting OBSS STAs is used to indicate whether to report the CSI between the second AP and the OBSS STAs.

[0567] In some embodiments, the C-OFDMA command field includes:

[0568] The Available RU / MRU field is used to indicate the RU or MRU shared by the first AP to at least one second AP.

[0569] In some embodiments, the C-SR command field includes at least one of the following fields:

[0570] Reporting the RSSI of the associated STA field is used to indicate whether to report the RSSI between the second AP and the associated STA;

[0571] The RSSI field for reporting OBSS STAs is used to indicate whether to report the RSSI between the second AP and the OBSS STA.

[0572] In some embodiments, the J-TX command field includes at least one of the following fields:

[0573] The CSI field for reporting associated STAs is used to indicate whether to report the CSI between the second AP and the associated STAs;

[0574] The CSI field for reporting OBSS STAs is used to indicate whether to report the CSI between the second AP and the OBSS STAs.

[0575] In some embodiments, the first request frame is a trigger frame.

[0576] In some embodiments, the first indication information is carried in a general information field or a user information field in the first request frame.

[0577] In some embodiments, the target cooperative transmission command is carried in a general information field or a user information field in the first request frame.

[0578] In some embodiments, the first request frame includes a trigger frame type field, the value of the trigger frame type field is a first value, which is used to indicate that the first request frame is used to request at least one second AP to participate in the multi-AP collaborative transmission of the first target collaborative transmission mode, and the first value is a reserved value of the trigger frame type field.

[0579] In some embodiments, the first request frame includes a general information field of a trigger frame type, and the first indication information and the target cooperative transmission command are carried in the general information field of the trigger frame type.

[0580] In some embodiments, the general information field of the trigger frame type includes at least one of the following fields:

[0581] The used collaborative transmission mode field is used to indicate the first target collaborative transmission mode;

[0582] The related collaborative transmission mode command field is used to indicate the collaborative transmission command corresponding to the first target collaborative transmission mode.

[0583] In some embodiments, the first request frame includes a general information field and a special user information field of the trigger frame type, the first indication information is carried in the general information field of the trigger frame type, and the target collaborative transmission command is carried in the special user information field.

[0584] In some embodiments, the general information field of the trigger frame type includes:

[0585] The used collaborative transmission mode field is used to indicate the first target collaborative transmission mode.

[0586] In some embodiments, the special user information field includes a user information field of a trigger frame type, and the target cooperative transmission command is carried in the user information field of the trigger frame type.

[0587] In some embodiments, the user information field of the trigger frame type includes at least one of the following fields:

[0588] The CSI field for reporting associated STAs is used to indicate whether to report the CSI between the second AP and the associated STAs;

[0589] The CSI field for reporting OBSS STAs is used to indicate whether to report the CSI between the second AP and the OBSS STAs;

[0590] The Available RU / MRU field is used to indicate the RU or MRU shared by the first AP to at least one second AP;

[0591] Reporting the RSSI of the associated STA field is used to indicate whether to report the RSSI between the second AP and the associated STA;

[0592] The RSSI field for reporting OBSS STAs is used to indicate whether to report the RSSI between the second AP and the OBSS STA.

[0593] In some embodiments, when the first target cooperative transmission mode includes the C-BF mode and / or the J-TX mode, the user information field of the trigger frame type includes at least one of the following fields:

[0594] The CSI field for reporting associated STAs is used to indicate whether to report the CSI between the second AP and the associated STAs;

[0595] The CSI field for reporting OBSS STAs is used to indicate whether to report the CSI between the second AP and the OBSS STAs.

[0596] In some embodiments, when the first target cooperative transmission mode includes a C-OFDMA mode, the user information field of the trigger frame type includes:

[0597] The Available RU / MRU field is used to indicate the RU or MRU shared by the first AP to at least one second AP.

[0598] In some embodiments, when the first target cooperative transmission mode includes the C-SR mode, the user information field of the trigger frame type includes at least one of the following fields:

[0599] Reporting the RSSI of the associated STA field is used to indicate whether to report the RSSI between the second AP and the associated STA;

[0600] The RSSI field for reporting OBSS STAs is used to indicate whether to report the RSSI between the second AP and the OBSS STA.

[0601] In some embodiments, the special user information field includes an association identifier AID12 field, and the value of the AID12 field is a second value, which is used to indicate that the first request frame is used to request at least one second AP to participate in the multi-AP collaborative transmission of the first target collaborative transmission mode, and the second value is a reserved value of the AID12 field.

[0602] In some embodiments, the first request frame includes a general information field and a multi-AP user information field of the trigger frame type, the first indication information is carried in the general information field of the trigger frame type, and the target cooperative transmission command is carried in the multi-AP user information field.

[0603] In some embodiments, the general information field of the trigger frame type includes:

[0604] The used collaborative transmission mode field is used to indicate the first target collaborative transmission mode.

[0605] In some embodiments, the multi-AP user information field includes an AID12 field, the value of the AID12 field is a third value, used to indicate that the first request frame is used to request at least one second AP to participate in the multi-AP collaborative transmission of the first target collaborative transmission mode, and the third value is a reserved value of the AID12 field.

[0606] In some embodiments, the multi-AP user information field includes at least one of the following fields:

[0607] The CSI field for reporting associated STAs is used to indicate whether to report the CSI between the second AP and the associated STAs;

[0608] The CSI field for reporting OBSS STAs is used to indicate whether to report the CSI between the second AP and the OBSS STAs;

[0609] The Available RU / MRU field is used to indicate the RU or MRU shared by the first AP to at least one second AP;

[0610] Reporting the RSSI of the associated STA field is used to indicate whether to report the RSSI between the second AP and the associated STA;

[0611] The RSSI field for reporting OBSS STAs is used to indicate whether to report the RSSI between the second AP and the OBSS STA.

[0612] In some embodiments, the first request frame includes a user information field of a trigger frame type, and the first indication information and the target cooperative transmission command are carried in the user information field of the trigger frame type.

[0613] In some embodiments, the user information field of the trigger frame type includes at least one of the following fields:

[0614] The used collaborative transmission mode field is used to indicate the first target collaborative transmission mode;

[0615] The related collaborative transmission mode command field is used to indicate the collaborative transmission command corresponding to the first target collaborative transmission mode.

[0616] In some embodiments, the relevant collaborative transmission mode command field includes at least one of the following fields:

[0617] The CSI field for reporting associated STAs is used to indicate whether to report the CSI between the second AP and the associated STAs;

[0618] The CSI field for reporting OBSS STAs is used to indicate whether to report the CSI between the second AP and the OBSS STAs;

[0619] The Available RU / MRU field is used to indicate the RU or MRU shared by the first AP to at least one second AP;

[0620] Reporting the RSSI of the associated STA field is used to indicate whether to report the RSSI between the second AP and the associated STA;

[0621] The RSSI field for reporting OBSS STAs is used to indicate whether to report the RSSI between the second AP and the OBSS STA.

[0622] In some embodiments, when the first target cooperative transmission mode includes the C-BF mode and / or the J-TX mode, the relevant cooperative transmission mode command field includes at least one of the following fields:

[0623] The CSI field for reporting associated STAs is used to indicate whether to report the CSI between the second AP and the associated STAs;

[0624] The CSI field for reporting OBSS STAs is used to indicate whether to report the CSI between the second AP and the OBSS STAs.

[0625] In some embodiments, when the first target cooperative transmission mode includes a C-OFDMA mode, the relevant cooperative transmission mode command field includes:

[0626] The Available RU / MRU field is used to indicate the RU or MRU shared by the first AP to at least one second AP.

[0627] In some embodiments, when the first target cooperative transmission mode includes the C-SR mode, the relevant cooperative transmission mode command field includes at least one of the following fields:

[0628] Reporting the RSSI of the associated STA field is used to indicate whether to report the RSSI between the second AP and the associated STA;

[0629] The RSSI field for reporting OBSS STAs is used to indicate whether to report the RSSI between the second AP and the OBSS STA.

[0630] In some embodiments, the collaborative transmission mode field used includes at least one of the following fields:

[0631] Use the C-BF field to indicate whether to request multi-AP collaborative transmission using the C-BF mode;

[0632] Use the C-OFDMA field to indicate whether to request multi-AP collaborative transmission using the C-OFDMA mode;

[0633] Use the C-SR field to indicate whether to request multi-AP collaborative transmission using the C-SR mode;

[0634] Use the J-TX field to indicate whether to request multi-AP collaborative transmission using the J-TX mode;

[0635] The C-UL MU MIMO field is used to indicate whether to request multi-AP coordinated transmission using the C-UL MU MIMO mode.

[0636] In some embodiments, the collaborative transmission mode fields used include:

[0637] The used cooperative transmission mode subfield is used to indicate a cooperative transmission mode in which the first AP requests at least one second AP to participate.

[0638] In some embodiments, the communication unit 410 is further configured to: receive a first response frame sent by at least one second AP, where the first response frame is used to indicate whether the at least one second AP participates in the multi-AP cooperative transmission of the first target cooperative transmission mode.

[0639] In some embodiments, the communication unit 410 is further configured to:

[0640] receiving a first response frame synchronously sent by at least one second AP; or

[0641] A first response frame asynchronously sent by at least one second AP is received.

[0642] In some embodiments, the first request frame is included in an aggregated media access control protocol data unit A-MPDU, and when at least one second AP synchronously sends a first response frame, the A-MPDU also includes a trigger frame, which is used to allocate sending resources to at least one second AP and trigger at least one second AP to send a first response frame simultaneously.

[0643] In some embodiments, the first response frame includes second indication information and / or target collaborative transmission information, the second indication information is used to indicate a second target collaborative transmission mode, the second target collaborative transmission mode is a collaborative transmission mode in which the second AP participates, and the target collaborative transmission information is collaborative transmission information corresponding to the second target collaborative transmission mode.

[0644] In some embodiments, the second indication information is indicated in a bitmap manner.

[0645] In some embodiments, the second indication information includes multiple bits, each bit corresponds to one of multiple collaborative transmission modes, and the value of each bit is used to indicate whether the second AP participates in the corresponding collaborative transmission mode.

[0646] In some embodiments, different values ​​of the second indication information are used to indicate a collaborative transmission mode in which the second AP participates.

[0647] In some embodiments, the target cooperative transmission information includes at least one of the following information:

[0648] The list of STAs participating in the second target cooperative transmission mode, the RU or MRU selected by the second AP, the CSI between the second AP and the STAs participating in the second target cooperative transmission mode, and the RSSI between the second AP and the STAs participating in the second target cooperative transmission mode.

[0649] In some embodiments, when the second target coordinated transmission mode includes the C-BF mode, the first response frame includes coordinated transmission information corresponding to the C-BF mode, and the coordinated transmission information corresponding to the C-BF mode includes at least one of the following:

[0650] List of STAs participating in C-BF mode, CSI between the second AP and associated STAs participating in C-BF mode, CSI between the second AP and OBSS STAs participating in C-BF mode.

[0651] In some embodiments, when the second target coordinated transmission mode includes the J-TX mode, the first response frame includes coordinated transmission information corresponding to the J-TX mode, and the coordinated transmission information corresponding to the J-TX mode includes at least one of the following:

[0652] List of STAs participating in the J-TX mode, CSI between the second AP and associated STAs participating in the J-TX mode, and CSI between the second AP and OBSS STAs participating in the J-TX mode.

[0653] In some embodiments, when the second target collaborative transmission mode includes a C-OFDMA mode, the first response frame includes collaborative transmission information corresponding to the C-OFDMA mode, and the collaborative transmission information corresponding to the C-OFDMA mode includes: the RU or MRU selected by the second AP.

[0654] In some embodiments, when the second target coordinated transmission mode includes a C-SR mode, the first response frame includes coordinated transmission information corresponding to the C-SR mode, where the coordinated transmission information corresponding to the C-SR mode includes at least one of the following:

[0655] List of STAs participating in C-SR mode, RSSI between the second AP and associated STAs participating in C-RS mode, RSSI between the second AP and OBSS STAs participating in C-RS mode.

[0656] In some embodiments, when the second target cooperative transmission mode includes the C-UL MU-MIMO mode, the first response frame includes cooperative transmission information corresponding to the C-UL MU-MIMO mode.

[0657] In some embodiments, the first response frame is a control frame.

[0658] In some embodiments, the first response frame includes a collaborative transmission response field, and the second indication information and / or target collaborative transmission information is carried in the collaborative transmission response field.

[0659] In some embodiments, the collaborative transmission response field includes at least one of the following fields:

[0660] The Accepted Collaborative Transmission Mode field is used to indicate the collaborative transmission mode in which the second AP participates;

[0661] The participating STA list field is used to indicate the STAs participating in the second target cooperative transmission mode;

[0662] The C-BF information field is used to indicate the collaborative transmission information corresponding to the C-BF mode;

[0663] The C-OFDMA information field is used to indicate the coordinated transmission information corresponding to the C-OFDMA mode;

[0664] The C-SR information field is used to indicate the collaborative transmission information corresponding to the C-SR mode;

[0665] The J-TX information field is used to indicate the coordinated transmission information corresponding to the J-TX mode;

[0666] The C-UL MU-MIMO information field is used to indicate the collaborative transmission information corresponding to the C-UL MU-MIMO mode.

[0667] In some embodiments, the C-BF information field includes at least one of the following fields:

[0668] The participating STA list field is used to indicate the STAs participating in the C-BF mode;

[0669] At least one CSI field is used to indicate CSI between the second AP and at least one STA participating in the C-BF mode.

[0670] In some embodiments, the J-TX information field includes at least one of the following fields:

[0671] The participating STA list field is used to indicate the STAs participating in the J-TX mode;

[0672] At least one CSI field is used to indicate CSI between the second AP and at least one STA participating in the J-TX mode.

[0673] In some embodiments, the C-SR information field includes at least one of the following fields:

[0674] The participating STA list field is used to indicate the STAs participating in the C-SR mode;

[0675] At least one RSSI field is used to indicate the RSSI between the second AP and at least one STA participating in the C-SR mode.

[0676] In some embodiments, the C-OFDMA information field includes:

[0677] The Selected RU / MRU field is used to indicate the RU / MRU selected by the second AP.

[0678] In some embodiments, the first response frame is a quality of service (QoS) empty frame, and the second indication information and / or target collaborative transmission information is carried in an aggregation control (A-Control) field in the QoS empty frame.

[0679] In some embodiments, the A-Control field includes a control information field, and the second indication information and / or target cooperative transmission information is carried in the control information field.

[0680] In some embodiments, the control information field includes at least one of the following:

[0681] The Accepted Collaborative Transmission Mode field is used to indicate the collaborative transmission mode in which the second AP participates;

[0682] The collaborative transmission mode information field is used to indicate target collaborative transmission information.

[0683] In some embodiments, the collaborative transmission mode information field includes at least one of the following fields:

[0684] The participating STA list field is used to indicate the STAs participating in the second target cooperative transmission mode;

[0685] At least one CSI field, used to indicate CSI between the second AP and at least one STA participating in the C-BF mode and / or the J-TX mode;

[0686] At least one RSSI field, used to indicate the RSSI between the second AP and at least one STA participating in the C-SR mode;

[0687] The Selected RU / MRU field is used to indicate the RU / MRU selected by the second AP.

[0688] In some embodiments, when the second target cooperative transmission mode includes the C-BF mode, the cooperative transmission mode information field includes the following fields: a participating STA list field, used to indicate STAs participating in the C-BF mode.

[0689] In some embodiments, when the second target cooperative transmission mode includes the J-TX mode, the cooperative transmission mode information field includes: a participating STA list field for indicating STAs participating in the J-TX mode.

[0690] In some embodiments, when the second target cooperative transmission mode includes the C-SR mode, the cooperative transmission mode information field includes at least one of the following fields:

[0691] The RSSI field of the associated STA is used to indicate the RSSI between the second AP and at least one associated STA participating in the C-SR mode;

[0692] The RSSI field of the OBSS STA is used to indicate the RSSI between the second AP and at least one OBSS STA participating in the C-SR mode.

[0693] In some embodiments, when the second target cooperative transmission mode includes the C-OFDMA mode, the cooperative transmission mode information field includes: a selected RU / MRU field for indicating the RU / MRU selected by the second AP.

[0694] In some embodiments, the Accepted Collaborative Transmission Mode field includes at least one of the following fields:

[0695] Accept C-BF field, used to indicate whether the second AP participates in multi-AP collaborative transmission in C-BF mode;

[0696] Accept C-OFDMA field, used to indicate whether the second AP participates in multi-AP cooperative transmission in C-OFDMA mode;

[0697] Accept C-SR field, used to indicate whether the second AP participates in multi-AP collaborative transmission in C-SR mode;

[0698] Accept the J-TX field, which is used to indicate whether the second AP participates in multi-AP collaborative transmission in J-TX mode;

[0699] The Accept C-UL MU MIMO field is used to indicate whether the second AP participates in multi-AP coordinated transmission in C-UL MU MIMO mode.

[0700] In some embodiments, the Accepted Collaborative Transmission Mode field includes:

[0701] The Accepted Cooperative Transmission Mode subfield is used to indicate the cooperative transmission mode in which the second AP participates.

[0702] In some embodiments, the communication unit 410 is further configured to: send a first notification frame to at least one third AP, where the first notification frame is used to notify the APs participating in the collaborative transmission of collaborative transmission parameters used.

[0703] In some embodiments, the at least one second AP includes at least one third AP.

[0704] In some embodiments, the first notification frame includes first notification information, and the first notification information includes at least one of the following:

[0705] The third indication information is used to indicate a third target cooperative transmission mode, where the third target cooperative transmission mode is the cooperative transmission mode determined to be adopted by the first AP; and a list of APs participating in the third target cooperative transmission mode.

[0706] Coordinated transmission parameters for a third target coordinated transmission mode.

[0707] In some embodiments, the cooperative transmission parameters for the third target cooperative transmission mode include at least one of the following:

[0708] Cooperative transmission parameters for C-BF mode;

[0709] Cooperative transmission parameters for C-OFDMA mode;

[0710] Cooperative transmission parameters for C-SR mode;

[0711] Cooperative transmission parameters for J-TX mode;

[0712] Cooperative transmission parameters for C-UL-MU-MIMO.

[0713] In some embodiments, the coordinated transmission parameters for the C-BF mode include:

[0714] List of APs participating in C-BF mode, used for the transmission matrix of each AP participating in C-BF mode.

[0715] In some embodiments, the coordinated transmission parameters for the J-TX mode include:

[0716] List of APs participating in J-TX mode, used for the transmission matrix of each AP participating in J-TX mode.

[0717] In some embodiments, the coordinated transmission parameters for C-OFDMA mode include:

[0718] List of APs participating in C-OFDMA mode, used for the RU / MRU of each AP participating in C-OFDMA mode.

[0719] In some embodiments, the coordinated transmission parameters for C-SR mode include:

[0720] List of APs participating in C-SR mode, used to set the transmit power of each AP participating in C-SR mode.

[0721] In some embodiments, the collaborative transmission parameters for the C-UL-MU-MIMO mode include: a list of APs participating in the C-UL-MU-MIMO mode, and spatial stream (SS) allocation information for each AP participating in the C-UL-MU-MIMO mode.

[0722] In some embodiments, the first notification frame includes a coordinated transmission notification field, and the first notification information is carried in the coordinated transmission notification field.

[0723] In some embodiments, the cooperative transmission notification field includes at least one of the following fields:

[0724] The used cooperative transmission mode field is used to indicate the third target cooperative transmission mode;

[0725] The AP list field is used to indicate the APs participating in the third target cooperative transmission mode;

[0726] The C-BF parameter field is used to indicate the collaborative transmission parameters corresponding to the C-BF mode;

[0727] The C-OFDMA parameter field is used to indicate the coordinated transmission parameters corresponding to the C-OFDMA mode;

[0728] The C-SR parameter field is used to indicate the coordinated transmission parameters corresponding to the C-SR mode;

[0729] The J-TX parameter field is used to indicate the coordinated transmission parameters corresponding to the J-TX mode;

[0730] The C-UL MU-MIMO parameter field is used to indicate the coordinated transmission parameters corresponding to the C-UL MU-MIMO mode.

[0731] In some embodiments, the cooperative transmission mode employed field includes at least one of the following fields:

[0732] The C-BF field is used to indicate whether to use the multi-AP collaborative transmission in C-BF mode;

[0733] The C-OFDMA field is used to indicate whether to use the multi-AP collaborative transmission in C-OFDMA mode;

[0734] The C-SR field is used to indicate whether to use multi-AP collaborative transmission in C-SR mode;

[0735] The J-TX field is used to indicate whether to use the multi-AP collaborative transmission in J-TX mode;

[0736] The C-UL MU MIMO field is used to indicate whether to adopt multi-AP cooperative transmission in C-UL MU MIMO mode.

[0737] In some embodiments, the cooperative transmission mode field used includes:

[0738] The cooperative transmission mode subfield is used to indicate the cooperative transmission mode used.

[0739] In some embodiments, the C-BF parameter field includes at least one of the following fields:

[0740] The AP list field is used to indicate at least one AP participating in the C-BF mode;

[0741] At least one transmission matrix field corresponds to at least one AP participating in the C-BF mode and is used to indicate a transmission matrix used by the AP participating in the C-BF mode.

[0742] In some embodiments, the J-TX parameter field includes at least one of the following fields:

[0743] The AP list field is used to indicate at least one AP participating in the J-TX mode;

[0744] At least one transmission matrix field corresponds to at least one AP participating in the J-TX mode and is used to indicate a transmission matrix used by the AP participating in the J-TX mode.

[0745] In some embodiments, the C-OFDMA parameters field includes at least one of the following fields:

[0746] The AP list field is used to indicate at least one AP participating in the C-OFDMA mode;

[0747] At least one RU / MRU field corresponds to at least one AP participating in the C-OFDMA mode and is used to indicate the RU or MRU used by the AP participating in the C-OFDMA mode.

[0748] In some embodiments, the C-SR parameter field includes at least one of the following fields:

[0749] The AP list field is used to indicate at least one AP participating in the C-SR mode;

[0750] At least one transmit power field corresponds to at least one AP participating in the C-SR mode and is used to indicate the transmit power used by the AP participating in the C-SR mode.

[0751] In some embodiments, the C-UL MU-MIMO parameters field includes at least one of the following fields:

[0752] The AP list field is used to indicate at least one AP participating in the C-UL MU-MIMO mode;

[0753] At least one SS allocation field corresponds to at least one AP participating in the C-UL MU-MIMO mode and is used to indicate SS allocation information used by the AP participating in the C-UL MU-MIMO mode.

[0754] In some embodiments, the first notification frame is further used to trigger the AP to perform multi-AP cooperative transmission using a third target cooperative transmission mode.

[0755] Alternatively, in some embodiments, the communication unit may be a communication interface or a transceiver, or an input / output interface of a communication chip or a system on chip. The processing unit may be one or more processors.

[0756] It should be understood that the first AP 400 according to the embodiment of the present application may correspond to the first AP or Sharing AP in the method embodiment of the present application, and the above-mentioned and other operations and / or functions of each unit in the first AP 400 are respectively for realizing the corresponding processes of the first AP or Sharing AP in the method 200 shown in Figures 4 to 49. For the sake of brevity, they will not be repeated here.

[0757] FIG51 is a schematic block diagram of a second access point AP according to an embodiment of the present application. The second AP 500 in FIG51 includes:

[0758] Communication unit 510 is used to receive a first request frame sent by a first AP, the first request frame includes first indication information and / or a target collaborative transmission command, wherein the first indication information is used to indicate a first target collaborative transmission mode, the first target collaborative transmission mode is a collaborative transmission mode in which the first AP requests the second AP to participate, and the target collaborative transmission command is a collaborative transmission command corresponding to the first target collaborative transmission mode.

[0759] In some embodiments, the first indication information indicates the first target collaborative transmission mode in a bitmap manner.

[0760] In some embodiments, the first indication information includes multiple bits, each bit corresponds to one of multiple collaborative transmission modes, and the value of each bit is used to indicate whether the first AP requests the second AP to participate in the corresponding collaborative transmission mode.

[0761] In some embodiments, different values ​​of the first indication information are used to indicate a collaborative transmission mode in which the first AP requests the second AP to participate.

[0762] In some embodiments, the collaborative transmission command corresponding to the first target collaborative transmission mode includes at least one of the following information:

[0763] Indication information of whether to report the channel state information CSI between the second AP and the associated station STA;

[0764] Indication information of whether to report the CSI between the second AP and the overlapping basic service set OBSS STA;

[0765] Available resource units RU or multiple resource units MRU shared by the first AP to the second AP;

[0766] Whether to report the RSSI (received signal strength indicator) between the second AP and the associated STA;

[0767] Indication information of whether to report the RSSI between the second AP and the OBSS STA.

[0768] In some embodiments, when the first target coordinated transmission mode includes a coordinated beamforming (C-BF) mode, the first request frame includes a coordinated transmission command corresponding to the C-BF mode, and the coordinated transmission command corresponding to the C-BF mode includes at least one of the following information:

[0769] Indication information of whether to report CSI between the second AP and the associated STAs;

[0770] Indication information of whether to report the CSI between the second AP and the OBSS STA.

[0771] In some embodiments, when the first target coordinated transmission mode includes a joint transmission (J-TX) mode, the first request frame includes a coordinated transmission command corresponding to the J-TX mode, and the coordinated transmission command corresponding to the J-TX mode includes at least one of the following information:

[0772] Indication information of whether to report CSI between the second AP and the associated STAs;

[0773] Indication information of whether to report the CSI between the second AP and the OBSS STA.

[0774] In some embodiments, when the first target coordinated transmission mode includes a coordinated orthogonal frequency division multiple access (C-OFDMA) mode, the first request frame includes a coordinated transmission command corresponding to the C-OFDMA mode, and the coordinated transmission command corresponding to the C-OFDMA mode includes:

[0775] The available RUs or MRUs shared by the first AP to the second AP.

[0776] In some embodiments, when the first target coordinated transmission mode includes a coordinated spatial multiplexing (C-SR) mode, the first request frame includes a coordinated transmission command corresponding to the C-SR mode, and the coordinated transmission command corresponding to the C-SR mode includes at least one of the following information:

[0777] Indication information of whether to report the RSSI between the second AP and the associated STA;

[0778] Indication information of whether to report the RSSI between the second AP and the OBSS STA.

[0779] In some embodiments, when the first target coordinated transmission mode includes a coordinated uplink multi-user multiple-input multiple-output (C-UL) MU-MIMO mode, the first request frame includes a coordinated transmission command corresponding to the C-UL MU-MIMO mode.

[0780] In some embodiments, the first request frame is a control frame.

[0781] In some embodiments, the first request frame includes a coordinated transmission request field, and the first indication information and / or the target coordinated transmission command are carried in the coordinated transmission request field.

[0782] In some embodiments, the cooperative transmission request field includes at least one of the following fields:

[0783] The cooperative transmission mode used field is used to indicate the cooperative transmission mode in which the first AP requests the second AP to participate;

[0784] The C-BF command field is used to indicate the collaborative transmission command corresponding to the C-BF mode;

[0785] The C-OFDMA command field is used to indicate the coordinated transmission command corresponding to the C-OFDMA mode;

[0786] The C-SR command field is used to indicate the coordinated transmission command corresponding to the C-SR mode;

[0787] The J-TX command field is used to indicate the collaborative transmission command corresponding to the J-TX mode;

[0788] The C-BF command field is used to indicate the collaborative transmission command corresponding to the C-BF mode;

[0789] The C-UL MU-MIMO command field is used to indicate the coordinated transmission command corresponding to the C-UL MU-MIMO mode.

[0790] In some embodiments, the C-BF command field includes at least one of the following fields:

[0791] The CSI field for reporting associated STAs is used to indicate whether to report the CSI between the second AP and the associated STAs;

[0792] The CSI field for reporting OBSS STAs is used to indicate whether to report the CSI between the second AP and the OBSS STAs.

[0793] In some embodiments, the C-OFDMA command field includes:

[0794] The Available RU / MRU field is used to indicate the RU or MRU shared by the first AP to the second AP.

[0795] In some embodiments, the C-SR command field includes at least one of the following fields:

[0796] Reporting the RSSI of the associated STA field is used to indicate whether to report the RSSI between the second AP and the associated STA;

[0797] The RSSI field for reporting OBSS STAs is used to indicate whether to report the RSSI between the second AP and the OBSS STA.

[0798] In some embodiments, the J-TX command field includes at least one of the following fields:

[0799] The CSI field for reporting associated STAs is used to indicate whether to report the CSI between the second AP and the associated STAs;

[0800] The CSI field for reporting OBSS STAs is used to indicate whether to report the CSI between the second AP and the OBSS STAs.

[0801] In some embodiments, the first request frame is a trigger frame.

[0802] In some embodiments, the first indication information is carried in a general information field or a user information field in the first request frame.

[0803] In some embodiments, the target cooperative transmission command is carried in a general information field or a user information field in the first request frame.

[0804] In some embodiments, the first request frame includes a trigger frame type field, the value of the trigger frame type is a first value, which is used to indicate that the first request frame is used to request the second AP to participate in the multi-AP collaborative transmission of the first target collaborative transmission mode, and the first value is a reserved value of the trigger frame type field.

[0805] In some embodiments, the first request frame includes a general information field of a trigger frame type, and the first indication information and the target cooperative transmission command are carried in the general information field of the trigger frame type.

[0806] In some embodiments, the general information field of the trigger frame type includes at least one of the following fields:

[0807] The used collaborative transmission mode field is used to indicate the first target collaborative transmission mode;

[0808] The related collaborative transmission mode command field is used to indicate the collaborative transmission command corresponding to the first target collaborative transmission mode.

[0809] In some embodiments, the first request frame includes a general information field and a special user information field of the trigger frame type, the first indication information is carried in the general information field of the trigger frame type, and the target collaborative transmission command is carried in the special user information field.

[0810] In some embodiments, the general information field of the trigger frame type includes:

[0811] The used collaborative transmission mode field is used to indicate the first target collaborative transmission mode.

[0812] In some embodiments, the special user information field includes a user information field of a trigger frame type, and the target cooperative transmission command is carried in the user information field of the trigger frame type.

[0813] In some embodiments, the user information field of the trigger frame type includes at least one of the following fields:

[0814] The CSI field for reporting associated STAs is used to indicate whether to report the CSI between the second AP and the associated STAs;

[0815] The CSI field for reporting OBSS STAs is used to indicate whether to report the CSI between the second AP and the OBSS STAs;

[0816] The Available RU / MRU field is used to indicate the RU or MRU shared by the first AP to the second AP;

[0817] Reporting the RSSI of the associated STA field is used to indicate whether to report the RSSI between the second AP and the associated STA;

[0818] The RSSI field for reporting OBSS STAs is used to indicate whether to report the RSSI between the second AP and the OBSS STA.

[0819] In some embodiments, when the first target cooperative transmission mode includes the C-BF mode and / or the J-TX mode, the user information field of the trigger frame type includes at least one of the following fields:

[0820] The CSI field for reporting associated STAs is used to indicate whether to report the CSI between the second AP and the associated STAs;

[0821] The CSI field for reporting OBSS STAs is used to indicate whether to report the CSI between the second AP and the OBSS STAs.

[0822] In some embodiments, when the first target cooperative transmission mode includes a C-OFDMA mode, the user information field of the trigger frame type includes:

[0823] The Available RU / MRU field is used to indicate the RU or MRU shared by the first AP to the second AP.

[0824] In some embodiments, when the first target cooperative transmission mode includes the C-SR mode, the user information field of the trigger frame type includes at least one of the following fields:

[0825] Reporting the RSSI of the associated STA field is used to indicate whether to report the RSSI between the second AP and the associated STA;

[0826] The RSSI field for reporting OBSS STAs is used to indicate whether to report the RSSI between the second AP and the OBSS STA.

[0827] In some embodiments, the special user information field includes an association identifier AID12 field, and the value of the AID12 field is a second value, which is used to indicate that the first request frame is used to request the second AP to participate in the multi-AP collaborative transmission of the first target collaborative transmission mode, and the second value is a reserved value of the AID12 field.

[0828] In some embodiments, the first request frame includes a general information field and a multi-AP user information field of the trigger frame type, the first indication information is carried in the general information field of the trigger frame type, and the target cooperative transmission command is carried in the multi-AP user information field.

[0829] In some embodiments, the general information field of the trigger frame type includes:

[0830] The used collaborative transmission mode field is used to indicate the first target collaborative transmission mode.

[0831] In some embodiments, the multi-AP user information field includes an AID12 field, the value of the AID12 field is a third value, used to indicate that the first request frame is used to request the second AP to participate in the multi-AP collaborative transmission of the first target collaborative transmission mode, and the third value is a reserved value of the AID12 field.

[0832] In some embodiments, the multi-AP user information field includes at least one of the following fields:

[0833] The CSI field for reporting associated STAs is used to indicate whether to report the CSI between the second AP and the associated STAs;

[0834] The CSI field for reporting OBSS STAs is used to indicate whether to report the CSI between the second AP and the OBSS STAs;

[0835] The Available RU / MRU field is used to indicate the RU or MRU shared by the first AP to the second AP;

[0836] Reporting the RSSI of the associated STA field is used to indicate whether to report the RSSI between the second AP and the associated STA;

[0837] The RSSI field for reporting OBSS STAs is used to indicate whether to report the RSSI between the second AP and the OBSS STA.

[0838] In some embodiments, the first request frame includes a user information field of a trigger frame type, and the first indication information and the target cooperative transmission command are carried in the user information field of the trigger frame type.

[0839] In some embodiments, the user information field of the trigger frame type includes at least one of the following fields:

[0840] The used collaborative transmission mode field is used to indicate the first target collaborative transmission mode;

[0841] The related collaborative transmission mode command field is used to indicate the collaborative transmission command corresponding to the first target collaborative transmission mode.

[0842] In some embodiments, the relevant collaborative transmission mode command field includes at least one of the following fields:

[0843] The CSI field for reporting associated STAs is used to indicate whether to report the CSI between the second AP and the associated STAs;

[0844] The CSI field for reporting OBSS STAs is used to indicate whether to report the CSI between the second AP and the OBSS STAs;

[0845] The Available RU / MRU field is used to indicate the RU or MRU shared by the first AP to at least one second AP;

[0846] Reporting the RSSI of the associated STA field is used to indicate whether to report the RSSI between the second AP and the associated STA;

[0847] The RSSI field for reporting OBSS STAs is used to indicate whether to report the RSSI between the second AP and the OBSS STA.

[0848] In some embodiments, when the first target cooperative transmission mode includes the C-BF mode and / or the J-TX mode, the relevant cooperative transmission mode command field includes at least one of the following fields:

[0849] The CSI field for reporting associated STAs is used to indicate whether to report the CSI between the second AP and the associated STAs;

[0850] The CSI field for reporting OBSS STAs is used to indicate whether to report the CSI between the second AP and the OBSS STAs.

[0851] In some embodiments, when the first target cooperative transmission mode includes a C-OFDMA mode, the relevant cooperative transmission mode command field includes:

[0852] The Available RU / MRU field is used to indicate the RU or MRU shared by the first AP to at least one second AP.

[0853] In some embodiments, when the first target cooperative transmission mode includes the C-SR mode, the relevant cooperative transmission mode command field includes at least one of the following fields:

[0854] Reporting the RSSI of the associated STA field is used to indicate whether to report the RSSI between the second AP and the associated STA;

[0855] The RSSI field for reporting OBSS STAs is used to indicate whether to report the RSSI between the second AP and the OBSS STA.

[0856] In some embodiments, the collaborative transmission mode field used includes at least one of the following fields:

[0857] Use the C-BF field to indicate whether to request multi-AP collaborative transmission using the C-BF mode;

[0858] Use the C-OFDMA field to indicate whether to request multi-AP collaborative transmission using the C-OFDMA mode;

[0859] Use the C-SR field to indicate whether to request multi-AP collaborative transmission using the C-SR mode;

[0860] Use the J-TX field to indicate whether to request multi-AP collaborative transmission using the J-TX mode;

[0861] The C-UL MU MIMO field is used to indicate whether to request multi-AP coordinated transmission using the C-UL MU MIMO mode.

[0862] In some embodiments, the collaborative transmission mode fields used include:

[0863] The used cooperative transmission mode subfield is used to indicate the cooperative transmission mode in which the first AP requests the second AP to participate.

[0864] In some embodiments, the communication unit 510 is further configured to: send a first response frame to the first AP, where the first response frame is used to indicate whether the second AP participates in the multi-AP cooperative transmission of the first target cooperative transmission mode.

[0865] In some embodiments, the first response frame includes second indication information and / or target collaborative transmission information, the second indication information is used to indicate a second target collaborative transmission mode, the second target collaborative transmission mode is a collaborative transmission mode in which the second AP participates, and the target collaborative transmission information is collaborative transmission information corresponding to the second target collaborative transmission mode.

[0866] In some embodiments, the second indication information is indicated in a bitmap manner.

[0867] In some embodiments, the second indication information includes multiple bits, each bit corresponds to one of multiple collaborative transmission modes, and the value of each bit is used to indicate whether the second AP participates in the corresponding collaborative transmission mode.

[0868] In some embodiments, different values ​​of the second indication information are used to indicate a collaborative transmission mode in which the second AP participates.

[0869] In some embodiments, the target cooperative transmission information includes at least one of the following information:

[0870] The list of STAs participating in the second target cooperative transmission mode, the RU or MRU selected by the second AP, the CSI between the second AP and the STAs participating in the second target cooperative transmission mode, and the RSSI between the second AP and the STAs participating in the second target cooperative transmission mode.

[0871] In some embodiments, when the second target coordinated transmission mode includes the C-BF mode, the first response frame includes coordinated transmission information corresponding to the C-BF mode, and the coordinated transmission information corresponding to the C-BF mode includes at least one of the following:

[0872] List of STAs participating in C-BF mode, CSI between the second AP and associated STAs participating in C-BF mode, CSI between the second AP and OBSS STAs participating in C-BF mode.

[0873] In some embodiments, when the second target coordinated transmission mode includes the J-TX mode, the first response frame includes coordinated transmission information corresponding to the J-TX mode, and the coordinated transmission information corresponding to the J-TX mode includes at least one of the following:

[0874] List of STAs participating in the J-TX mode, CSI between the second AP and associated STAs participating in the J-TX mode, and CSI between the second AP and OBSS STAs participating in the J-TX mode.

[0875] In some embodiments, when the second target collaborative transmission mode includes a C-OFDMA mode, the first response frame includes collaborative transmission information corresponding to the C-OFDMA mode, and the collaborative transmission information corresponding to the C-OFDMA mode includes: the RU or MRU selected by the second AP.

[0876] In some embodiments, when the second target coordinated transmission mode includes a C-SR mode, the first response frame includes coordinated transmission information corresponding to the C-SR mode, where the coordinated transmission information corresponding to the C-SR mode includes at least one of the following:

[0877] List of STAs participating in C-SR mode, RSSI between the second AP and associated STAs participating in C-RS mode, RSSI between the second AP and OBSS STAs participating in C-RS mode.

[0878] In some embodiments, when the second target cooperative transmission mode includes the C-UL MU-MIMO mode, the first response frame includes cooperative transmission information corresponding to the C-UL MU-MIMO mode.

[0879] In some embodiments, the first response frame is a control frame.

[0880] In some embodiments, the first response frame includes a collaborative transmission response field, and the second indication information and / or target collaborative transmission information is carried in the collaborative transmission response field.

[0881] In some embodiments, the collaborative transmission response field includes at least one of the following fields:

[0882] The Accepted Collaborative Transmission Mode field is used to indicate the collaborative transmission mode in which the second AP participates;

[0883] The participating STA list field is used to indicate the STAs participating in the second target cooperative transmission mode;

[0884] The C-BF information field is used to indicate the collaborative transmission information corresponding to the C-BF mode;

[0885] The C-OFDMA information field is used to indicate the coordinated transmission information corresponding to the C-OFDMA mode;

[0886] The C-SR information field is used to indicate the collaborative transmission information corresponding to the C-SR mode;

[0887] The J-TX information field is used to indicate the coordinated transmission information corresponding to the J-TX mode;

[0888] The C-UL MU-MIMO information field is used to indicate the collaborative transmission information corresponding to the C-UL MU-MIMO mode.

[0889] In some embodiments, the C-BF information field includes at least one of the following fields:

[0890] The participating STA list field is used to indicate the STAs participating in the C-BF mode;

[0891] At least one CSI field is used to indicate CSI between the second AP and at least one STA participating in the C-BF mode.

[0892] In some embodiments, the J-TX information field includes at least one of the following fields:

[0893] The participating STA list field is used to indicate the STAs participating in the J-TX mode;

[0894] At least one CSI field is used to indicate CSI between the second AP and at least one STA participating in the J-TX mode.

[0895] In some embodiments, the C-SR information field includes at least one of the following fields:

[0896] The participating STA list field is used to indicate the STAs participating in the C-SR mode;

[0897] At least one RSSI field is used to indicate the RSSI between the second AP and at least one STA participating in the C-SR mode.

[0898] In some embodiments, the C-OFDMA information field includes:

[0899] The Selected RU / MRU field is used to indicate the RU / MRU selected by the second AP.

[0900] In some embodiments, the first response frame is a quality of service (QoS) empty frame, and the second indication information and / or target collaborative transmission information is carried in an aggregation control (A-Control) field in the QoS empty frame.

[0901] In some embodiments, the A-Control field includes a control information field, and the second indication information and / or target cooperative transmission information is carried in the control information field.

[0902] In some embodiments, the control information field includes at least one of the following:

[0903] The Accepted Collaborative Transmission Mode field is used to indicate the collaborative transmission mode in which the second AP participates;

[0904] The collaborative transmission mode information field is used to indicate target collaborative transmission information.

[0905] In some embodiments, the collaborative transmission mode information field includes at least one of the following fields:

[0906] The participating STA list field is used to indicate the STAs participating in the second target cooperative transmission mode;

[0907] At least one CSI field, used to indicate CSI between the second AP and at least one STA participating in the C-BF mode and / or the J-TX mode;

[0908] At least one RSSI field, used to indicate the RSSI between the second AP and at least one STA participating in the C-SR mode;

[0909] The Selected RU / MRU field is used to indicate the RU / MRU selected by the second AP.

[0910] In some embodiments, when the second target cooperative transmission mode includes the C-BF mode, the cooperative transmission mode information field includes: a participating STA list field for indicating STAs participating in the C-BF mode.

[0911] In some embodiments, when the second target cooperative transmission mode includes the J-TX mode, the cooperative transmission mode information field includes: a participating STA list field for indicating STAs participating in the J-TX mode.

[0912] In some embodiments, when the second target cooperative transmission mode includes the C-SR mode, the cooperative transmission mode information field includes at least one of the following fields:

[0913] The RSSI field of the associated STA is used to indicate the RSSI between the second AP and at least one associated STA participating in the C-SR mode;

[0914] The RSSI field of the OBSS STA is used to indicate the RSSI between the second AP and at least one OBSS STA participating in the C-SR mode.

[0915] In some embodiments, when the second target cooperative transmission mode includes the C-OFDMA mode, the cooperative transmission mode information field includes: a selected RU / MRU field for indicating the RU / MRU selected by the second AP.

[0916] In some embodiments, the Accepted Collaborative Transmission Mode field includes at least one of the following fields:

[0917] Accept C-BF field, used to indicate whether the second AP participates in multi-AP collaborative transmission in C-BF mode;

[0918] Accept C-OFDMA field, used to indicate whether the second AP participates in multi-AP cooperative transmission in C-OFDMA mode;

[0919] Accept C-SR field, used to indicate whether the second AP participates in multi-AP collaborative transmission in C-SR mode;

[0920] Accept the J-TX field, which is used to indicate whether the second AP participates in multi-AP collaborative transmission in J-TX mode;

[0921] The Accept C-UL MU MIMO field is used to indicate whether the second AP participates in multi-AP coordinated transmission in C-UL MU MIMO mode.

[0922] In some embodiments, the Accepted Collaborative Transmission Mode field includes:

[0923] The Accepted Cooperative Transmission Mode subfield is used to indicate the cooperative transmission mode in which the second AP participates.

[0924] In some embodiments, the communication unit 510 is further configured to: receive a first notification frame sent by a first AP, where the first notification frame is used to notify the APs participating in the collaborative transmission of collaborative transmission parameters used.

[0925] In some embodiments, the first notification frame includes first notification information, and the first notification information includes at least one of the following:

[0926] The third indication information is used to indicate a third target cooperative transmission mode, where the third target cooperative transmission mode is the cooperative transmission mode determined to be adopted by the first AP; and a list of APs participating in the third target cooperative transmission mode.

[0927] Coordinated transmission parameters for a third target coordinated transmission mode.

[0928] In some embodiments, the cooperative transmission parameters for the third target cooperative transmission mode include at least one of the following:

[0929] Cooperative transmission parameters for C-BF mode;

[0930] Cooperative transmission parameters for C-OFDMA mode;

[0931] Cooperative transmission parameters for C-SR mode;

[0932] Cooperative transmission parameters for J-TX mode;

[0933] Cooperative transmission parameters for C-UL-MU-MIMO.

[0934] In some embodiments, the coordinated transmission parameters for the C-BF mode include:

[0935] List of APs participating in C-BF mode, used for the transmission matrix of each AP participating in C-BF mode.

[0936] In some embodiments, the coordinated transmission parameters for the J-TX mode include:

[0937] List of APs participating in J-TX mode, used for the transmission matrix of each AP participating in J-TX mode.

[0938] In some embodiments, the coordinated transmission parameters for C-OFDMA mode include:

[0939] List of APs participating in C-OFDMA mode, used for the RU / MRU of each AP participating in C-OFDMA mode.

[0940] In some embodiments, the coordinated transmission parameters for C-SR mode include:

[0941] List of APs participating in C-SR mode, used to set the transmit power of each AP participating in C-SR mode.

[0942] In some embodiments, the cooperative transmission parameters for C-UL-MU-MIMO mode include:

[0943] A list of APs participating in C-UL-MU-MIMO mode, used for spatial stream allocation information of each AP participating in C-UL-MU-MIMO mode.

[0944] In some embodiments, the first notification frame includes a coordinated transmission notification field, and the first notification information is carried in the coordinated transmission notification field.

[0945] In some embodiments, the cooperative transmission notification field includes at least one of the following fields:

[0946] The used cooperative transmission mode field is used to indicate the third target cooperative transmission mode;

[0947] The AP list field is used to indicate the APs participating in the third target cooperative transmission mode;

[0948] The C-BF parameter field is used to indicate the collaborative transmission parameters corresponding to the C-BF mode;

[0949] The C-OFDMA parameter field is used to indicate the coordinated transmission parameters corresponding to the C-OFDMA mode;

[0950] The C-SR parameter field is used to indicate the coordinated transmission parameters corresponding to the C-SR mode;

[0951] The J-TX parameter field is used to indicate the coordinated transmission parameters corresponding to the J-TX mode;

[0952] The C-UL MU-MIMO parameter field is used to indicate the coordinated transmission parameters corresponding to the C-UL MU-MIMO mode.

[0953] In some embodiments, the cooperative transmission mode employed field includes at least one of the following fields:

[0954] The C-BF field is used to indicate whether to use the multi-AP collaborative transmission in C-BF mode;

[0955] The C-OFDMA field is used to indicate whether to use the multi-AP collaborative transmission in C-OFDMA mode;

[0956] The C-SR field is used to indicate whether to use multi-AP collaborative transmission in C-SR mode;

[0957] The J-TX field is used to indicate whether to use the multi-AP collaborative transmission in J-TX mode;

[0958] The C-UL MU MIMO field is used to indicate whether to adopt multi-AP cooperative transmission in C-UL MU MIMO mode.

[0959] In some embodiments, the cooperative transmission mode field used includes:

[0960] The cooperative transmission mode subfield is used to indicate the cooperative transmission mode used.

[0961] In some embodiments, the C-BF parameter field includes at least one of the following fields:

[0962] The AP list field is used to indicate at least one AP participating in the C-BF mode;

[0963] At least one transmission matrix field corresponds to at least one AP participating in the C-BF mode and is used to indicate a transmission matrix used by the AP participating in the C-BF mode.

[0964] In some embodiments, the J-TX parameter field includes at least one of the following fields:

[0965] The AP list field is used to indicate at least one AP participating in the J-TX mode;

[0966] At least one transmission matrix field corresponds to at least one AP participating in the J-TX mode and is used to indicate a transmission matrix used by the AP participating in the J-TX mode.

[0967] In some embodiments, the C-OFDMA parameters field includes at least one of the following fields:

[0968] The AP list field is used to indicate at least one AP participating in the C-OFDMA mode;

[0969] At least one RU / MRU field corresponds to at least one AP participating in the C-OFDMA mode and is used to indicate the RU or MRU used by the AP participating in the C-OFDMA mode.

[0970] In some embodiments, the C-SR parameter field includes at least one of the following fields:

[0971] The AP list field is used to indicate at least one AP participating in the C-SR mode;

[0972] At least one transmit power field corresponds to at least one AP participating in the C-SR mode and is used to indicate the transmit power used by the AP participating in the C-SR mode.

[0973] In some embodiments, the C-UL MU-MIMO parameters field includes at least one of the following fields:

[0974] The AP list field is used to indicate at least one AP participating in the C-UL MU-MIMO mode;

[0975] At least one SS allocation field corresponds to at least one AP participating in the C-UL MU-MIMO mode and is used to indicate SS allocation information used by the AP participating in the C-UL MU-MIMO mode.

[0976] In some embodiments, the first notification frame is further used to trigger the AP to perform multi-AP cooperative transmission using a third target cooperative transmission mode.

[0977] Alternatively, in some embodiments, the communication unit may be a communication interface or a transceiver, or an input / output interface of a communication chip or a system on chip. The processing unit may be one or more processors.

[0978] It should be understood that the second AP 500 according to the embodiment of the present application may correspond to the second AP or Shared AP in the embodiment of the method of the present application, and the above-mentioned and other operations and / or functions of each unit in the second AP 500 are respectively for realizing the corresponding processes of the second AP or Shared AP in the method 200 shown in Figures 4 to 49. For the sake of brevity, they will not be repeated here.

[0979] Figure 52 is a schematic structural diagram of a communication device 600 provided in an embodiment of the present application. The communication device 600 shown in Figure 52 includes a processor 610, which can call and run a computer program from a memory to implement the method in the embodiment of the present application.

[0980] Optionally, as shown in FIG52 , the communication device 600 may further include a memory 620. The processor 610 may call and execute a computer program from the memory 620 to implement the method in the embodiment of the present application.

[0981] The memory 620 may be a separate device independent of the processor 610 , or may be integrated into the processor 610 .

[0982] Optionally, as shown in FIG52 , the communication device 600 may further include a transceiver 630 , and the processor 610 may control the transceiver 630 to communicate with other devices, specifically, to send information or data to other devices, or to receive information or data sent by other devices.

[0983] The transceiver 630 may include a transmitter and a receiver. The transceiver 630 may further include an antenna, and the number of antennas may be one or more.

[0984] Optionally, the communication device 600 may specifically be the first AP or Sharing AP in the embodiment of the present application, and the communication device 600 may implement the corresponding processes implemented by the first AP or Sharing AP in each method of the embodiment of the present application. For the sake of brevity, they will not be repeated here.

[0985] Optionally, the communication device 600 may specifically be the second AP or Shared AP in the embodiment of the present application, and the communication device 600 may implement the corresponding processes implemented by the second AP or Shared AP in each method of the embodiment of the present application. For the sake of brevity, they will not be repeated here.

[0986] Figure 53 is a schematic structural diagram of a chip according to an embodiment of the present application. The chip 700 shown in Figure 53 includes a processor 710, which can call and run a computer program from a memory to implement the method according to the embodiment of the present application.

[0987] Optionally, as shown in FIG53 , the chip 700 may further include a memory 720. The processor 710 may call and execute a computer program from the memory 720 to implement the method in the embodiment of the present application.

[0988] The memory 720 may be a separate device independent of the processor 710 , or may be integrated into the processor 710 .

[0989] Optionally, the chip 700 may further include an input interface 730. The processor 710 may control the input interface 730 to communicate with other devices or chips, and specifically, may obtain information or data sent by other devices or chips.

[0990] Optionally, the chip 700 may further include an output interface 740. The processor 710 may control the output interface 740 to communicate with other devices or chips, and specifically, may output information or data to other devices or chips.

[0991] Optionally, the chip can be applied to the first AP or Sharing AP in the embodiment of the present application, and the chip can implement the corresponding processes implemented by the first AP or Sharing AP in each method of the embodiment of the present application. For the sake of brevity, it will not be repeated here.

[0992] Optionally, the chip can be applied to the second AP or Shared AP in the embodiments of the present application, and the chip can implement the corresponding processes implemented by the second AP or Shared AP in each method of the embodiments of the present application. For the sake of brevity, they are not repeated here.

[0993] It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

[0994] FIG54 is a schematic block diagram of a communication system 900 provided in an embodiment of the present application. As shown in FIG54 , the communication system 900 includes a first access point 910 and a second access point 920 .

[0995] Among them, the first access point 910 can be used to implement the corresponding functions implemented by the first AP or Sharing AP in the above method, and the second access point 920 can be used to implement the corresponding functions implemented by the second AP or Shared AP in the above method. For the sake of brevity, they are not repeated here.

[0996] It should be understood that the processor of the embodiments of the present application may be an integrated circuit chip with signal processing capabilities. During implementation, each step of the above method embodiment can be completed by hardware integrated logic circuits in the processor or software instructions. The above processor 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. The various methods, steps, and logic block diagrams disclosed in the embodiments of the present application can be implemented or executed. The general-purpose processor can be a microprocessor or any conventional processor. The steps of the method disclosed in the embodiments of the present application can be directly embodied as being executed by a hardware decoding processor, or can be executed by a combination of hardware and software modules in the decoding processor. The software module can be located in a storage medium mature in the art, such as random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, etc. The storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.

[0997] It is understood that the memory in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), which is used as an external cache. By way of example and not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct RAM bus random access memory (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0998] It should be understood that the above-mentioned memories are exemplary but not restrictive. For example, the memories in the embodiments of the present 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 RAM RAM (DR RAM), etc. In other words, the memories in the embodiments of the present application are intended to include, but are not limited to, these and any other suitable types of memories.

[0999] An embodiment of the present application also provides a computer-readable storage medium for storing a computer program.

[1000] Optionally, the computer-readable storage medium can be applied to the first AP or Sharing AP in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the first AP or Sharing AP in the various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[1001] Optionally, the computer-readable storage medium can be applied to the second AP or Shared AP in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the second AP or Shared AP in the various methods of the embodiments of the present application. For the sake of brevity, they are not repeated here.

[1002] An embodiment of the present application also provides a computer program product, including computer program instructions.

[1003] Optionally, the computer program product can be applied to the first AP or Sharing AP in the embodiments of the present application, and the computer program instructions enable the computer to execute the corresponding processes implemented by the first AP or Sharing AP in the various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[1004] Optionally, the computer program product can be applied to the second AP or Shared AP in the embodiments of the present application, and the computer program instructions enable the computer to execute the corresponding processes implemented by the second AP or Shared AP in the various methods of the embodiments of the present application. For the sake of brevity, they are not repeated here.

[1005] The embodiment of the present application also provides a computer program.

[1006] Optionally, the computer program can be applied to the first AP or Sharing AP in the embodiments of the present application. When the computer program runs on a computer, the computer executes the corresponding processes implemented by the first AP or Sharing AP in the various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[1007] Optionally, the computer program can be applied to the second AP or Shared AP in the embodiments of the present application. When the computer program runs on a computer, the computer executes the corresponding processes implemented by the second AP or Shared AP in the various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[1008] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[1009] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[1010] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of the units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[1011] The units described as separate components may or may not be physically separate, and 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 these units may be selected to achieve the purpose of this embodiment according to actual needs.

[1012] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[1013] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[1014] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A wireless communication method, characterized in that: include: A first access point AP sends a first request frame to at least one second AP, where the first request frame includes first indication information and / or a target collaborative transmission command, wherein the first indication information is used to indicate a first target collaborative transmission mode, where the first target collaborative transmission mode is a collaborative transmission mode in which the first AP requests the at least one second AP to participate, and the target collaborative transmission command is a collaborative transmission command corresponding to the first target collaborative transmission mode.

2. The method according to claim 1, characterized in that The first indication information indicates the first target collaborative transmission mode in a bitmap manner.

3. The method according to claim 2, characterized in that The first indication information includes multiple bits, each bit corresponds to one of multiple collaborative transmission modes, and the value of each bit is used to indicate whether the first AP requests the at least one second AP to participate in the corresponding collaborative transmission mode.

4. The method according to claim 1, wherein Different values ​​of the first indication information are used to indicate a collaborative transmission mode in which the first AP requests the at least one second AP to participate.

5. The method according to any one of claims 1 to 4, characterized in that The collaborative transmission command corresponding to the first target collaborative transmission mode includes at least one of the following information: Indication information of whether to report channel state information CSI between the second AP and the associated station STA; Indication information of whether to report the CSI between the second AP and the overlapping basic service set OBSS STA; Available resource units RU or multiple resource units MRU shared by the first AP to the at least one second AP; Whether to report indication information of the received signal strength indicator RSSI between the second AP and the associated STA; Indication information of whether to report the RSSI between the second AP and the OBSS STA.

6. The method according to any one of claims 1 to 5, characterized in that When the first target coordinated transmission mode includes a coordinated beamforming (C-BF) mode, the first request frame includes a coordinated transmission command corresponding to the C-BF mode, where the coordinated transmission command corresponding to the C-BF mode includes at least one of the following information: Indication information of whether to report CSI between the second AP and the associated STAs; Indication information of whether to report the CSI between the second AP and the OBSS STA.

7. The method according to any one of claims 1 to 6, characterized in that In a case where the first target coordinated transmission mode includes a joint transmission J-TX mode, the first request frame includes a coordinated transmission command corresponding to the J-TX mode, and the coordinated transmission command corresponding to the J-TX mode includes at least one of the following information: Indication information of whether to report CSI between the second AP and the associated STAs; Indication information of whether to report the CSI between the second AP and the OBSS STA.

8. The method according to any one of claims 1 to 7, characterized in that In a case where the first target coordinated transmission mode includes a coordinated orthogonal frequency division multiple access (C-OFDMA) mode, the first request frame includes a coordinated transmission command corresponding to the C-OFDMA mode, and the coordinated transmission command corresponding to the C-OFDMA mode includes: The first AP shares available RUs or MRUs with the at least one second AP.

9. The method according to any one of claims 1 to 8, characterized in that In a case where the first target coordinated transmission mode includes a coordinated spatial multiplexing (C-SR) mode, the first request frame includes a coordinated transmission command corresponding to the C-SR mode, where the coordinated transmission command corresponding to the C-SR mode includes at least one of the following information: Indication information of whether to report the RSSI between the second AP and the associated STA; Indication information of whether to report the RSSI between the second AP and the OBSS STA.

10. The method according to any one of claims 1 to 9, characterized in that In a case where the first target coordinated transmission mode includes a coordinated uplink multi-user multiple input multiple output (C-UL MU-MIMO) mode, the first request frame includes a coordinated transmission command corresponding to the C-UL MU-MIMO mode.

11. The method according to any one of claims 1 to 10, characterized in that The first request frame is a control frame.

12. The method according to claim 11, characterized in that The first request frame includes a collaborative transmission request field, and the first indication information and / or the target collaborative transmission command are carried in the collaborative transmission request field.

13. The method according to claim 12, characterized in that The collaborative transmission request field includes at least one of the following fields: A used collaborative transmission mode field is used to indicate a collaborative transmission mode in which the first AP requests the at least one second AP to participate; The C-BF command field is used to indicate the collaborative transmission command corresponding to the C-BF mode; The C-OFDMA command field is used to indicate the coordinated transmission command corresponding to the C-OFDMA mode; The C-SR command field is used to indicate the coordinated transmission command corresponding to the C-SR mode; The J-TX command field is used to indicate the collaborative transmission command corresponding to the J-TX mode; The C-BF command field is used to indicate the collaborative transmission command corresponding to the C-BF mode; The C-UL MU-MIMO command field is used to indicate the coordinated transmission command corresponding to the C-UL MU-MIMO mode.

14. The method according to claim 13, characterized in that The C-BF command field includes at least one of the following fields: Reporting the CSI of the associated STA field, used to indicate whether to report the CSI between the second AP and the associated STA; The CSI field for reporting OBSS STA is used to indicate whether to report the CSI between the second AP and the OBSS STA.

15. The method according to claim 13 or 14, characterized in that The C-OFDMA command field includes: The available RU / MRU field is used to indicate the RU or MRU shared by the first AP to the at least one second AP.

16. The method according to any one of claims 13 to 15, characterized in that The C-SR command field includes at least one of the following fields: Reporting the RSSI of the associated STA field, used to indicate whether to report the RSSI between the second AP and the associated STA; The RSSI field for reporting OBSS STA is used to indicate whether to report the RSSI between the second AP and the OBSS STA.

17. The method according to any one of claims 13 to 16, characterized in that The J-TX command field includes at least one of the following fields: Reporting the CSI of the associated STA field, used to indicate whether to report the CSI between the second AP and the associated STA; The CSI field for reporting OBSS STA is used to indicate whether to report the CSI between the second AP and the OBSS STA.

18. The method according to any one of claims 1 to 10, characterized in that The first request frame is a trigger frame.

19. The method according to claim 18, characterized in that The first indication information is carried in the general information field or the user information field in the first request frame; and / or The target cooperative transmission command is carried in the general information field or the user information field in the first request frame.

20. The method according to claim 18 or 19, characterized in that The first request frame includes a trigger frame type field, and the value of the trigger frame type field is a first value, which is used to indicate that the first request frame is used to request the at least one second AP to participate in the multi-AP collaborative transmission of the first target collaborative transmission mode, and the first value is a reserved value of the trigger frame type field.

21. The method according to any one of claims 18 to 20, characterized in that The first request frame includes a general information field of a trigger frame type, and the first indication information and the target cooperative transmission command are carried in the general information field of the trigger frame type.

22. The method according to claim 21, characterized in that The general information field of the trigger frame type includes at least one of the following fields: A used collaborative transmission mode field is used to indicate the first target collaborative transmission mode; The related collaborative transmission mode command field is used to indicate the collaborative transmission command corresponding to the first target collaborative transmission mode.

23. The method according to any one of claims 18 to 20, characterized in that The first request frame includes a general information field and a special user information field of a trigger frame type, the first indication information is carried in the general information field of the trigger frame type, and the target collaborative transmission command is carried in the special user information field.

24. The method according to claim 23, wherein The general information field of the trigger frame type includes: The collaborative transmission mode used field is used to indicate the first target collaborative transmission mode.

25. The method according to claim 23 or 24, characterized in that The special user information field includes a user information field of a trigger frame type, and the target collaborative transmission command is carried in the user information field of the trigger frame type.

26. The method according to claim 25, characterized in that The user information field of the trigger frame type includes at least one of the following fields: Reporting the CSI of the associated STA field, used to indicate whether to report the CSI between the second AP and the associated STA; The CSI field for reporting OBSS STAs is used to indicate whether to report the CSI between the second AP and the OBSS STAs; An available RU / MRU field is used to indicate the RU or MRU shared by the first AP to the at least one second AP; Reporting the RSSI of the associated STA field, used to indicate whether to report the RSSI between the second AP and the associated STA; The RSSI field for reporting OBSS STA is used to indicate whether to report the RSSI between the second AP and the OBSS STA.

27. The method according to claim 25 or 26, characterized in that In a case where the first target cooperative transmission mode includes a C-BF mode and / or a J-TX mode, the user information field of the trigger frame type includes at least one of the following fields: Reporting the CSI of the associated STA field, used to indicate whether to report the CSI between the second AP and the associated STA; The CSI field for reporting OBSS STA is used to indicate whether to report the CSI between the second AP and the OBSS STA.

28. The method according to any one of claims 25 to 27, characterized in that In a case where the first target cooperative transmission mode includes a C-OFDMA mode, the user information field of the trigger frame type includes: The available RU / MRU field is used to indicate the RU or MRU shared by the first AP to the at least one second AP.

29. The method according to any one of claims 25 to 28, characterized in that In a case where the first target cooperative transmission mode includes a C-SR mode, the user information field of the trigger frame type includes at least one of the following fields: Reporting the RSSI of the associated STA field, used to indicate whether to report the RSSI between the second AP and the associated STA; The RSSI field for reporting OBSS STA is used to indicate whether to report the RSSI between the second AP and the OBSS STA.

30. The method according to any one of claims 23 to 29, wherein: The special user information field includes an association identifier AID12 field, and the value of the AID12 field is a second value, which is used to indicate that the first request frame is used to request the at least one second AP to participate in the multi-AP collaborative transmission of the first target collaborative transmission mode, and the second value is a reserved value of the AID12 field.

31. The method according to any one of claims 18 to 20, characterized in that The first request frame includes a general information field and a multi-AP user information field of a trigger frame type, the first indication information is carried in the general information field of the trigger frame type, and the target cooperative transmission command is carried in the multi-AP user information field.

32. The method according to claim 31, characterized in that The general information field of the trigger frame type includes: The collaborative transmission mode used field is used to indicate the first target collaborative transmission mode.

33. The method according to claim 31 or 32, characterized in that The multi-AP user information field includes an AID12 field, and the value of the AID12 field is a third value, which is used to indicate that the first request frame is used to request the at least one second AP to participate in the multi-AP collaborative transmission of the first target collaborative transmission mode, and the third value is a reserved value of the AID12 field.

34. The method according to any one of claims 31 to 33, characterized in that The multi-AP user information field includes at least one of the following fields: Reporting the CSI of the associated STA field, used to indicate whether to report the CSI between the second AP and the associated STA; The CSI field for reporting OBSS STAs is used to indicate whether to report the CSI between the second AP and the OBSS STAs; An available RU / MRU field is used to indicate the RU or MRU shared by the first AP to the at least one second AP; Reporting the RSSI of the associated STA field, used to indicate whether to report the RSSI between the second AP and the associated STA; The RSSI field for reporting OBSS STA is used to indicate whether to report the RSSI between the second AP and the OBSS STA.

35. The method according to any one of claims 18 to 20, characterized in that The first request frame includes a user information field of a trigger frame type, and the first indication information and the target cooperative transmission command are carried in the user information field of the trigger frame type.

36. The method according to claim 35, characterized in that The user information field of the trigger frame type includes at least one of the following fields: A used collaborative transmission mode field is used to indicate the first target collaborative transmission mode; The related collaborative transmission mode command field is used to indicate the collaborative transmission command corresponding to the first target collaborative transmission mode.

37. The method according to claim 22 or 36, characterized in that The relevant collaborative transmission mode command field includes at least one of the following fields: Reporting the CSI of the associated STA field, used to indicate whether to report the CSI between the second AP and the associated STA; The CSI field for reporting OBSS STAs is used to indicate whether to report the CSI between the second AP and the OBSS STAs; An available RU / MRU field is used to indicate the RU or MRU shared by the first AP to the at least one second AP; Reporting the RSSI of the associated STA field, used to indicate whether to report the RSSI between the second AP and the associated STA; The RSSI field for reporting OBSS STA is used to indicate whether to report the RSSI between the second AP and the OBSS STA.

38. The method according to claim 37, wherein In a case where the first target cooperative transmission mode includes the C-BF mode and / or the J-TX mode, the relevant cooperative transmission mode command field includes at least one of the following fields: Reporting the CSI of the associated STA field, used to indicate whether to report the CSI between the second AP and the associated STA; The CSI field for reporting OBSS STA is used to indicate whether to report the CSI between the second AP and the OBSS STA.

39. The method according to claim 37 or 38, characterized in that In a case where the first target coordinated transmission mode includes a C-OFDMA mode, the relevant coordinated transmission mode command field includes: The available RU / MRU field is used to indicate the RU or MRU shared by the first AP to the at least one second AP.

40. The method according to any one of claims 37 to 39, wherein In a case where the first target cooperative transmission mode includes a C-SR mode, the relevant cooperative transmission mode command field includes at least one of the following fields: Reporting the RSSI of the associated STA field, used to indicate whether to report the RSSI between the second AP and the associated STA; The RSSI field for reporting OBSS STA is used to indicate whether to report the RSSI between the second AP and the OBSS STA.

41. The method of claim 13, 22, 24, 32 or 36, wherein: The collaborative transmission mode field includes at least one of the following fields: Use the C-BF field to indicate whether to request multi-AP collaborative transmission using the C-BF mode; Use the C-OFDMA field to indicate whether to request multi-AP collaborative transmission using the C-OFDMA mode; Use the C-SR field to indicate whether to request multi-AP collaborative transmission using the C-SR mode; Use the J-TX field to indicate whether to request multi-AP collaborative transmission using the J-TX mode; The C-UL MU MIMO field is used to indicate whether to request multi-AP coordinated transmission using the C-UL MU MIMO mode.

42. The method of claim 13, 22, 24, 32 or 36, wherein: The collaborative transmission mode field used includes: The used collaborative transmission mode subfield is used to indicate the collaborative transmission mode in which the first AP requests the at least one second AP to participate.

43. The method according to any one of claims 1 to 42, wherein The method further comprises: The first AP receives a first response frame sent by at least one second AP, where the first response frame is used to indicate whether the at least one second AP participates in the multi-AP cooperative transmission in the first target cooperative transmission mode.

44. The method according to claim 43, wherein The first AP receiving a first response frame sent by at least one second AP includes: The first AP receives a first response frame synchronously sent by at least one second AP; or The first AP receives a first response frame asynchronously sent by at least one second AP.

45. The method according to claim 44, wherein The first request frame is included in an aggregated medium access control protocol data unit A-MPDU. When the at least one second AP sends the first response frame synchronously, the A-MPDU also includes a trigger frame, and the trigger frame is used to allocate sending resources to the at least one second AP and trigger the at least one second AP to send the first response frame simultaneously.

46. ​​The method according to any one of claims 43 to 45, wherein: The first response frame includes second indication information and / or target collaborative transmission information, the second indication information is used to indicate a second target collaborative transmission mode, the second target collaborative transmission mode is a collaborative transmission mode in which the second AP participates, and the target collaborative transmission information is collaborative transmission information corresponding to the second target collaborative transmission mode.

47. The method according to claim 46, wherein The second indication information is indicated in a bitmap manner.

48. The method according to claim 46, wherein The second indication information includes multiple bits, each bit corresponds to one of multiple collaborative transmission modes, and the value of each bit is used to indicate whether the second AP participates in the corresponding collaborative transmission mode.

49. The method according to claim 46, wherein Different values ​​of the second indication information are used to indicate the collaborative transmission mode in which the second AP participates.

50. The method according to any one of claims 46 to 49, wherein The target collaborative transmission information includes at least one of the following information: A list of STAs participating in the second target collaborative transmission mode, the RU or MRU selected by the second AP, the CSI between the second AP and the STAs participating in the second target collaborative transmission mode, and the RSSI between the second AP and the STAs participating in the second target collaborative transmission mode.

51. The method according to any one of claims 46 to 50, wherein: In a case where the second target collaborative transmission mode includes a C-BF mode, the first response frame includes collaborative transmission information corresponding to the C-BF mode, where the collaborative transmission information corresponding to the C-BF mode includes at least one of the following: A list of STAs participating in the C-BF mode, CSI between the second AP and associated STAs participating in the C-BF mode, and CSI between the second AP and OBSS STAs participating in the C-BF mode.

52. The method according to any one of claims 46 to 51, wherein: In a case where the second target coordinated transmission mode includes a J-TX mode, the first response frame includes coordinated transmission information corresponding to the J-TX mode, where the coordinated transmission information corresponding to the J-TX mode includes at least one of the following: A list of STAs participating in the J-TX mode, CSI between the second AP and associated STAs participating in the J-TX mode, and CSI between the second AP and OBSS STAs participating in the J-TX mode.

53. The method according to any one of claims 46 to 52, wherein: In the case where the second target collaborative transmission mode includes the C-OFDMA mode, the first response frame includes collaborative transmission information corresponding to the C-OFDMA mode, and the collaborative transmission information corresponding to the C-OFDMA mode includes: the RU or MRU selected by the second AP.

54. The method according to any one of claims 46 to 53, wherein: In a case where the second target collaborative transmission mode includes a C-SR mode, the first response frame includes collaborative transmission information corresponding to the C-SR mode, where the collaborative transmission information corresponding to the C-SR mode includes at least one of the following: A list of STAs participating in C-SR mode, RSSI between the second AP and associated STAs participating in C-RS mode, and RSSI between the second AP and OBSS STAs participating in C-RS mode.

55. The method according to any one of claims 46 to 54, wherein: In a case where the second target cooperative transmission mode includes the C-UL MU-MIMO mode, the first response frame includes cooperative transmission information corresponding to the C-UL MU-MIMO mode.

56. The method according to any one of claims 46 to 55, wherein: The first response frame is a control frame.

57. The method according to claim 56, characterized in that The first response frame includes a collaborative transmission response field, and the second indication information and / or the target collaborative transmission information are carried in the collaborative transmission response field.

58. The method according to claim 57, wherein The collaborative transmission response field includes at least one of the following fields: An accepted collaborative transmission mode field is used to indicate the collaborative transmission mode in which the second AP participates; The participating STA list field is used to indicate the STAs participating in the second target cooperative transmission mode; The C-BF information field is used to indicate the collaborative transmission information corresponding to the C-BF mode; The C-OFDMA information field is used to indicate the coordinated transmission information corresponding to the C-OFDMA mode; The C-SR information field is used to indicate the collaborative transmission information corresponding to the C-SR mode; The J-TX information field is used to indicate the coordinated transmission information corresponding to the J-TX mode; The C-UL MU-MIMO information field is used to indicate the collaborative transmission information corresponding to the C-UL MU-MIMO mode.

59. The method according to claim 58, characterized in that The C-BF information field includes at least one of the following fields: The participating STA list field is used to indicate the STAs participating in the C-BF mode; At least one CSI field is used to indicate the CSI between the second AP and at least one STA participating in the C-BF mode.

60. The method according to claim 58 or 59, characterized in that The J-TX information field includes at least one of the following fields: The participating STA list field is used to indicate the STAs participating in the J-TX mode; At least one CSI field is used to indicate the CSI between the second AP and at least one STA participating in the J-TX mode.

61. The method according to any one of claims 56 to 58, wherein: The C-SR information field includes at least one of the following fields: The participating STA list field is used to indicate the STAs participating in the C-SR mode; At least one RSSI field is used to indicate the RSSI between the second AP and at least one STA participating in the C-SR mode.

62. The method according to any one of claims 58 to 61, wherein: The C-OFDMA information field includes: The selected RU / MRU field is used to indicate the RU / MRU selected by the second AP.

63. The method according to any one of claims 46 to 55, wherein: The first response frame is a quality of service (QoS) empty frame, and the second indication information and / or the target collaborative transmission information are carried in an aggregation control (A-Control) field in the QoS empty frame.

64. The method according to claim 63, wherein The A-Control field includes a control information field, and the second indication information and / or the target collaborative transmission information is carried in the control information field.

65. The method according to claim 64, characterized in that The control information field includes at least one of the following: An accepted collaborative transmission mode field is used to indicate the collaborative transmission mode in which the second AP participates; The collaborative transmission mode information field is used to indicate the target collaborative transmission information.

66. The method according to claim 65, characterized in that The collaborative transmission mode information field includes at least one of the following fields: The participating STA list field is used to indicate the STAs participating in the second target cooperative transmission mode; At least one CSI field, used to indicate CSI between the second AP and at least one STA participating in C-BF mode and / or J-TX mode; At least one RSSI field, used to indicate the RSSI between the second AP and at least one STA participating in the C-SR mode; The selected RU / MRU field is used to indicate the RU / MRU selected by the second AP.

67. The method according to claim 65 or 66, characterized in that In the case where the second target cooperative transmission mode includes the C-BF mode, the cooperative transmission mode information field The following fields are included: The Participating STA List field is used to indicate the STAs participating in the C-BF mode.

68. The method according to any one of claims 65 to 67, wherein: In a case where the second target cooperative transmission mode includes the J-TX mode, the cooperative transmission mode information field includes at least one of the following fields: The Participating STA List field is used to indicate the STAs participating in the J-TX mode.

69. The method according to any one of claims 65 to 68, wherein In the case where the second target cooperative transmission mode includes the C-SR mode, the cooperative transmission mode information field includes at least one of the following fields: The RSSI field of the associated STA is used to indicate the RSSI between the second AP and at least one associated STA participating in the C-SR mode; The RSSI field of the OBSS STA is used to indicate the RSSI between the second AP and at least one OBSS STA participating in the C-SR mode.

70. The method according to any one of claims 65 to 69, wherein In a case where the second target coordinated transmission mode includes a C-OFDMA mode, the coordinated transmission mode information field includes: The selected RU / MRU field is used to indicate the RU / MRU selected by the second AP.

71. The method according to claim 58 or 65, characterized in that The accepted collaborative transmission mode field includes at least one of the following fields: Accept C-BF field, used to indicate whether the second AP participates in multi-AP collaborative transmission in C-BF mode; Accept C-OFDMA field, used to indicate whether the second AP participates in multi-AP collaborative transmission in C-OFDMA mode; Accept C-SR field, used to indicate whether the second AP participates in multi-AP collaborative transmission in C-SR mode; Accept J-TX field, used to indicate whether the second AP participates in multi-AP collaborative transmission in J-TX mode; The Accept C-UL MU MIMO field is used to indicate whether the second AP participates in multi-AP cooperative transmission in the C-UL MU MIMO mode.

72. The method according to claim 58 or 65, characterized in that The Accepted Collaborative Transmission Mode field includes: The accepted collaborative transmission mode subfield is used to indicate the collaborative transmission mode in which the second AP participates.

73. The method according to any one of claims 1 to 72, wherein The method further comprises: The first AP sends a first notification frame to at least one third AP, where the first notification frame is used to notify the APs participating in the collaborative transmission of collaborative transmission parameters used.

74. The method according to claim 73, characterized in that The at least one second AP includes the at least one third AP.

75. The method according to claim 73 or 74, characterized in that The first notification frame includes first notification information, and the first notification information includes at least one of the following: third indication information, used to indicate a third target cooperative transmission mode, where the third target cooperative transmission mode is the cooperative transmission mode determined to be adopted by the first AP; and a list of APs participating in the third target cooperative transmission mode; Coordinated transmission parameters for the third target coordinated transmission mode.

76. The method according to claim 75, characterized in that The collaborative transmission parameter for the third target collaborative transmission mode includes at least one of the following: Cooperative transmission parameters for C-BF mode; Cooperative transmission parameters for C-OFDMA mode; Cooperative transmission parameters for C-SR mode; Cooperative transmission parameters for J-TX mode; Cooperative transmission parameters for C-UL-MU-MIMO.

77. The method according to claim 76, characterized in that The collaborative transmission parameters for the C-BF mode include: List of APs participating in C-BF mode, used for the transmission matrix of each AP participating in C-BF mode.

78. The method according to claim 76 or 77, characterized in that The collaborative transmission parameters for the J-TX mode include at least one of the following: List of APs participating in J-TX mode, used for the transmission matrix of each AP participating in J-TX mode.

79. The method according to any one of claims 76 to 78, wherein The collaborative transmission parameters for the C-OFDMA mode include: a list of APs participating in the C-OFDMA mode, and a RU / MRU for each AP participating in the C-OFDMA mode.

80. The method according to any one of claims 76 to 79, wherein The collaborative transmission parameters for the C-SR mode include at least one of the following: List of APs participating in C-SR mode, used to set the transmit power of each AP participating in C-SR mode.

81. The method according to any one of claims 76 to 80, wherein: The collaborative transmission parameter for the C-UL-MU-MIMO mode includes at least one of the following: A list of APs participating in C-UL-MU-MIMO mode, used for spatial stream allocation information of each AP participating in C-UL-MU-MIMO mode.

82. The method according to any one of claims 75 to 81, wherein The first notification frame includes a collaborative transmission notification field, and the first notification information is carried in the collaborative transmission notification field.

83. The method according to claim 82, characterized in that The collaborative transmission notification field includes at least one of the following fields: The adopted collaborative transmission mode field is used to indicate the third target collaborative transmission mode; An AP list field is used to indicate the APs participating in the third target cooperative transmission mode; The C-BF parameter field is used to indicate the collaborative transmission parameters corresponding to the C-BF mode; The C-OFDMA parameter field is used to indicate the coordinated transmission parameters corresponding to the C-OFDMA mode; The C-SR parameter field is used to indicate the coordinated transmission parameters corresponding to the C-SR mode; The J-TX parameter field is used to indicate the coordinated transmission parameters corresponding to the J-TX mode; The C-UL MU-MIMO parameter field is used to indicate the coordinated transmission parameters corresponding to the C-UL MU-MIMO mode.

84. The method according to claim 83, wherein The adopted collaborative transmission mode field includes at least one of the following fields: The C-BF field is used to indicate whether to use the multi-AP collaborative transmission in C-BF mode; The C-OFDMA field is used to indicate whether to use the multi-AP collaborative transmission in C-OFDMA mode; The C-SR field is used to indicate whether to use multi-AP collaborative transmission in C-SR mode; The J-TX field is used to indicate whether to use the multi-AP collaborative transmission in J-TX mode; The C-UL MU MIMO field is used to indicate whether to adopt multi-AP cooperative transmission in C-UL MU MIMO mode.

85. The method according to claim 83, characterized in that The adopted collaborative transmission mode field includes: The cooperative transmission mode subfield is used to indicate the cooperative transmission mode used.

86. The method according to any one of claims 83 to 85, wherein The C-BF parameter field includes at least one of the following fields: The AP list field is used to indicate at least one AP participating in the C-BF mode; At least one transmission matrix field corresponds to at least one AP participating in the C-BF mode and is used to indicate a transmission matrix used by the AP participating in the C-BF mode.

87. The method according to any one of claims 83 to 86, wherein The J-TX parameter field includes at least one of the following fields: The AP list field is used to indicate at least one AP participating in the J-TX mode; At least one transmission matrix field corresponds to at least one AP participating in the J-TX mode and is used to indicate a transmission matrix used by the AP participating in the J-TX mode.

88. The method according to any one of claims 83 to 87, wherein The C-OFDMA parameter field includes at least one of the following fields: The AP list field is used to indicate at least one AP participating in the C-OFDMA mode; At least one RU / MRU field corresponds to at least one AP participating in the C-OFDMA mode and is used to indicate the RU or MRU used by the AP participating in the C-OFDMA mode.

89. The method according to any one of claims 83 to 88, wherein The C-SR parameter field includes at least one of the following fields: The AP list field is used to indicate at least one AP participating in the C-SR mode; At least one transmit power field corresponds to at least one AP participating in the C-SR mode and is used to indicate the transmit power used by the AP participating in the C-SR mode.

90. The method according to any one of claims 83 to 89, wherein The C-UL MU-MIMO parameter field includes at least one of the following fields: The AP list field is used to indicate at least one AP participating in the C-UL MU-MIMO mode; At least one SS allocation field corresponds to at least one AP participating in the C-UL MU-MIMO mode and is used to indicate SS allocation information used by the AP participating in the C-UL MU-MIMO mode.

91. The method according to any one of claims 75 to 90, wherein: The first notification frame is further used to trigger the AP to perform multi-AP coordinated transmission using the third target coordinated transmission mode.

92. A wireless communication method, characterized in that: include: The second access point AP receives a first request frame sent by the first AP, where the first request frame includes first indication information and / or a target collaborative transmission command, wherein the first indication information is used to indicate a first target collaborative transmission mode, the first target collaborative transmission mode is a collaborative transmission mode in which the first AP requests the second AP to participate, and the target collaborative transmission command is a collaborative transmission command corresponding to the first target collaborative transmission mode.

93. The method according to claim 92, characterized in that The first indication information indicates the first target collaborative transmission mode in a bitmap manner.

94. The method according to claim 93, wherein The first indication information includes multiple bits, each bit corresponds to one of multiple collaborative transmission modes, and the value of each bit is used to indicate whether the first AP requests the second AP to participate in the corresponding collaborative transmission mode.

95. The method according to claim 92, wherein Different values ​​of the first indication information are used to indicate a collaborative transmission mode in which the first AP requests the second AP to participate.

96. The method according to any one of claims 92 to 95, wherein: The collaborative transmission command corresponding to the first target collaborative transmission mode includes at least one of the following information: Indication information of whether to report channel state information CSI between the second AP and the associated station STA; Indication information of whether to report the CSI between the second AP and the overlapping basic service set OBSS STA; An available resource unit RU or multiple resource unit MRU shared by the first AP to the second AP; Whether to report indication information of the received signal strength indicator RSSI between the second AP and the associated STA; Indication information of whether to report the RSSI between the second AP and the OBSS STA.

97. The method according to any one of claims 92 to 96, wherein: When the first target coordinated transmission mode includes a coordinated beamforming (C-BF) mode, the first request frame includes a coordinated transmission command corresponding to the C-BF mode, where the coordinated transmission command corresponding to the C-BF mode includes at least one of the following information: Indication information of whether to report CSI between the second AP and the associated STAs; Indication information of whether to report the CSI between the second AP and the OBSS STA.

98. The method according to any one of claims 92 to 97, wherein: In a case where the first target coordinated transmission mode includes a joint transmission J-TX mode, the first request frame includes a coordinated transmission command corresponding to the J-TX mode, and the coordinated transmission command corresponding to the J-TX mode includes at least one of the following information: Indication information of whether to report CSI between the second AP and the associated STAs; Indication information of whether to report the CSI between the second AP and the OBSS STA.

99. The method according to any one of claims 92 to 98, wherein: In a case where the first target coordinated transmission mode includes a coordinated orthogonal frequency division multiple access (C-OFDMA) mode, the first request frame includes a coordinated transmission command corresponding to the C-OFDMA mode, and the coordinated transmission command corresponding to the C-OFDMA mode includes: The first AP shares the available RU or MRU with the second AP.

100. The method according to any one of claims 92 to 99, wherein: In a case where the first target coordinated transmission mode includes a coordinated spatial multiplexing (C-SR) mode, the first request frame includes a coordinated transmission command corresponding to the C-SR mode, where the coordinated transmission command corresponding to the C-SR mode includes at least one of the following information: Indication information of whether to report the RSSI between the second AP and the associated STA; Indication information of whether to report the RSSI between the second AP and the OBSS STA.

101. The method according to any one of claims 92 to 100, wherein: In a case where the first target coordinated transmission mode includes a coordinated uplink multi-user multiple input multiple output (C-UL MU-MIMO) mode, the first request frame includes a coordinated transmission command corresponding to the C-UL MU-MIMO mode.

102. The method according to any one of claims 92 to 101, wherein: The first request frame is a control frame.

103. The method according to claim 102, characterized in that The first request frame includes a collaborative transmission request field, and the first indication information and / or the target collaborative transmission command are carried in the collaborative transmission request field.

104. The method according to claim 103, characterized in that The collaborative transmission request field includes at least one of the following fields: A collaborative transmission mode field is used to indicate a collaborative transmission mode in which the first AP requests the second AP to participate; The C-BF command field is used to indicate the collaborative transmission command corresponding to the C-BF mode; The C-OFDMA command field is used to indicate the coordinated transmission command corresponding to the C-OFDMA mode; The C-SR command field is used to indicate the coordinated transmission command corresponding to the C-SR mode; The J-TX command field is used to indicate the collaborative transmission command corresponding to the J-TX mode; The C-BF command field is used to indicate the collaborative transmission command corresponding to the C-BF mode; The C-UL MU-MIMO command field is used to indicate the coordinated transmission command corresponding to the C-UL MU-MIMO mode.

105. The method according to claim 104, characterized in that The C-BF command field includes at least one of the following fields: Reporting the CSI of the associated STA field, used to indicate whether to report the CSI between the second AP and the associated STA; The CSI field for reporting OBSS STA is used to indicate whether to report the CSI between the second AP and the OBSS STA.

106. The method according to claim 104 or 105, characterized in that The C-OFDMA command field includes: The available RU / MRU field is used to indicate the RU or MRU shared by the first AP to the second AP.

107. The method according to any one of claims 104-106, characterized in that The C-SR command field includes at least one of the following fields: Reporting the RSSI of the associated STA field, used to indicate whether to report the RSSI between the second AP and the associated STA; The RSSI field for reporting OBSS STA is used to indicate whether to report the RSSI between the second AP and the OBSS STA.

108. The method according to any one of claims 104-107, characterized in that The J-TX command field includes at least one of the following fields: Reporting the CSI of the associated STA field, used to indicate whether to report the CSI between the second AP and the associated STA; The CSI field for reporting OBSS STA is used to indicate whether to report the CSI between the second AP and the OBSS STA.

109. The method according to any one of claims 92 to 101, wherein: The first request frame is a trigger frame.

110. The method according to claim 109, characterized in that The first indication information is carried in the general information field or the user information field in the first request frame; and / or The target cooperative transmission command is carried in the general information field or the user information field in the first request frame.

111. The method according to claim 109 or 110, characterized in that The first request frame includes a trigger frame type field, the value of the trigger frame type is a first value, used to indicate that the first request frame is used to request the second AP to participate in the multi-AP collaborative transmission of the first target collaborative transmission mode, and the first value is a reserved value of the trigger frame type field.

112. The method according to any one of claims 109 to 111, wherein: The first request frame includes a general information field of a trigger frame type, and the first indication information and the target cooperative transmission command are carried in the general information field of the trigger frame type.

113. The method according to claim 112, characterized in that The general information field of the trigger frame type includes at least one of the following fields: A used collaborative transmission mode field is used to indicate the first target collaborative transmission mode; The related collaborative transmission mode command field is used to indicate the collaborative transmission command corresponding to the first target collaborative transmission mode.

114. The method according to any one of claims 109 to 111, wherein: The first request frame includes a general information field and a special user information field of a trigger frame type, the first indication information is carried in the general information field of the trigger frame type, and the target collaborative transmission command is carried in the special user information field.

115. The method according to claim 114, characterized in that The general information field of the trigger frame type includes: The collaborative transmission mode used field is used to indicate the first target collaborative transmission mode.

116. The method according to claim 114 or 115, characterized in that The special user information field includes a user information field of a trigger frame type, and the target collaborative transmission command is carried in the user information field of the trigger frame type.

117. The method according to claim 116, characterized in that The user information field of the trigger frame type includes at least one of the following fields: Reporting the CSI of the associated STA field, used to indicate whether to report the CSI between the second AP and the associated STA; The CSI field for reporting OBSS STAs is used to indicate whether to report the CSI between the second AP and the OBSS STAs; Available RU / MRU field, used to indicate the RU or MRU shared by the first AP to the second AP; Reporting the RSSI of the associated STA field, used to indicate whether to report the RSSI between the second AP and the associated STA; The RSSI field for reporting OBSS STA is used to indicate whether to report the RSSI between the second AP and the OBSS STA.

118. The method according to claim 116 or 117, characterized in that In a case where the first target cooperative transmission mode includes a C-BF mode and / or a J-TX mode, the user information field of the trigger frame type includes at least one of the following fields: Reporting the CSI of the associated STA field, used to indicate whether to report the CSI between the second AP and the associated STA; The CSI field for reporting OBSS STA is used to indicate whether to report the CSI between the second AP and the OBSS STA.

119. The method according to any one of claims 116 to 118, wherein: In a case where the first target cooperative transmission mode includes a C-OFDMA mode, the user information field of the trigger frame type includes: The available RU / MRU field is used to indicate the RU or MRU shared by the first AP to the second AP.

120. The method according to any one of claims 116 to 119, wherein: In a case where the first target cooperative transmission mode includes a C-SR mode, the user information field of the trigger frame type includes at least one of the following fields: Reporting the RSSI of the associated STA field, used to indicate whether to report the RSSI between the second AP and the associated STA; The RSSI field for reporting OBSS STA is used to indicate whether to report the RSSI between the second AP and the OBSS STA.

121. The method according to any one of claims 114 to 120, wherein: The special user information field includes an association identifier AID12 field, and the value of the AID12 field is a second value, which is used to indicate that the first request frame is used to request the second AP to participate in the multi-AP collaborative transmission of the first target collaborative transmission mode, and the second value is a reserved value of the AID12 field.

122. The method according to any one of claims 109-110, characterized in that The first request frame includes a general information field and a multi-AP user information field of a trigger frame type, the first indication information is carried in the general information field of the trigger frame type, and the target cooperative transmission command is carried in the multi-AP user information field.

123. The method according to claim 122, characterized in that The general information field of the trigger frame type includes: The collaborative transmission mode used field is used to indicate the first target collaborative transmission mode.

124. The method according to claim 122 or 123, characterized in that The multi-AP user information field includes an AID12 field, and the value of the AID12 field is a third value, which is used to indicate that the first request frame is used to request the second AP to participate in the multi-AP collaborative transmission of the first target collaborative transmission mode, and the third value is a reserved value of the AID12 field.

125. The method according to any one of claims 122 to 124, wherein: The multi-AP user information field includes at least one of the following fields: Reporting the CSI of the associated STA field, used to indicate whether to report the CSI between the second AP and the associated STA; The CSI field for reporting OBSS STAs is used to indicate whether to report the CSI between the second AP and the OBSS STAs; Available RU / MRU field, used to indicate the RU or MRU shared by the first AP to the second AP; Reporting the RSSI of the associated STA field, used to indicate whether to report the RSSI between the second AP and the associated STA; The RSSI field for reporting OBSS STA is used to indicate whether to report the RSSI between the second AP and the OBSS STA.

126. The method according to any one of claims 109-110, characterized in that The first request frame includes a user information field of a trigger frame type, and the first indication information and the target cooperative transmission command are carried in the user information field of the trigger frame type.

127. The method according to claim 126, characterized in that The user information field of the trigger frame type includes at least one of the following fields: A used collaborative transmission mode field is used to indicate the first target collaborative transmission mode; The related collaborative transmission mode command field is used to indicate the collaborative transmission command corresponding to the first target collaborative transmission mode.

128. The method according to claim 113 or 127, characterized in that The relevant collaborative transmission mode command field includes at least one of the following fields: Reporting the CSI of the associated STA field, used to indicate whether to report the CSI between the second AP and the associated STA; The CSI field for reporting OBSS STAs is used to indicate whether to report the CSI between the second AP and the OBSS STAs; An available RU / MRU field is used to indicate the RU or MRU shared by the first AP to the at least one second AP; Reporting the RSSI of the associated STA field, used to indicate whether to report the RSSI between the second AP and the associated STA; The RSSI field for reporting OBSS STA is used to indicate whether to report the RSSI between the second AP and the OBSS STA.

129. The method according to claim 128, characterized in that In a case where the first target cooperative transmission mode includes the C-BF mode and / or the J-TX mode, the relevant cooperative transmission mode command field includes at least one of the following fields: Reporting the CSI of the associated STA field, used to indicate whether to report the CSI between the second AP and the associated STA; The CSI field for reporting OBSS STA is used to indicate whether to report the CSI between the second AP and the OBSS STA.

130. The method according to claim 128 or 129, characterized in that In a case where the first target coordinated transmission mode includes a C-OFDMA mode, the relevant coordinated transmission mode command field includes: The available RU / MRU field is used to indicate the RU or MRU shared by the first AP to the at least one second AP.

131. The method according to any one of claims 128 to 130, wherein: In a case where the first target cooperative transmission mode includes a C-SR mode, the relevant cooperative transmission mode command field includes at least one of the following fields: Reporting the RSSI of the associated STA field, used to indicate whether to report the RSSI between the second AP and the associated STA; The RSSI field for reporting OBSS STA is used to indicate whether to report the RSSI between the second AP and the OBSS STA.

132. The method of claim 104, 113, 115, 123 or 127, wherein: The collaborative transmission mode field includes at least one of the following fields: Use the C-BF field to indicate whether to request multi-AP collaborative transmission using the C-BF mode; Use the C-OFDMA field to indicate whether to request multi-AP collaborative transmission using the C-OFDMA mode; Use the C-SR field to indicate whether to request multi-AP collaborative transmission using the C-SR mode; Use the J-TX field to indicate whether to request multi-AP collaborative transmission using the J-TX mode; The C-UL MU MIMO field is used to indicate whether to request multi-AP coordinated transmission using the C-UL MU MIMO mode.

133. The method of claim 104, 113, 115, 123 or 127, wherein: The collaborative transmission mode field used includes: The used collaborative transmission mode subfield is used to indicate the collaborative transmission mode in which the first AP requests the second AP to participate.

134. The method according to any one of claims 92-133, wherein: The method further comprises: The second AP sends a first response frame to the first AP, where the first response frame is used to indicate whether the second AP participates in the multi-AP cooperative transmission in the first target cooperative transmission mode.

135. The method according to claim 134, characterized in that The first response frame includes second indication information and / or target collaborative transmission information, the second indication information is used to indicate a second target collaborative transmission mode, the second target collaborative transmission mode is a collaborative transmission mode in which the second AP participates, and the target collaborative transmission information is collaborative transmission information corresponding to the second target collaborative transmission mode.

136. The method according to claim 135, characterized in that The second indication information is indicated in a bitmap manner.

137. The method according to claim 136, characterized in that The second indication information includes multiple bits, each bit corresponds to one of multiple collaborative transmission modes, and the value of each bit is used to indicate whether the second AP participates in the corresponding collaborative transmission mode.

138. The method according to claim 135, characterized in that Different values ​​of the second indication information are used to indicate the collaborative transmission mode in which the second AP participates.

139. The method according to any one of claims 135 to 138, wherein The target collaborative transmission information includes at least one of the following information: A list of STAs participating in the second target collaborative transmission mode, the RU or MRU selected by the second AP, the CSI between the second AP and the STAs participating in the second target collaborative transmission mode, and the RSSI between the second AP and the STAs participating in the second target collaborative transmission mode.

140. The method according to any one of claims 135 to 139, wherein In a case where the second target collaborative transmission mode includes a C-BF mode, the first response frame includes collaborative transmission information corresponding to the C-BF mode, where the collaborative transmission information corresponding to the C-BF mode includes at least one of the following: A list of STAs participating in the C-BF mode, CSI between the second AP and associated STAs participating in the C-BF mode, and CSI between the second AP and OBSS STAs participating in the C-BF mode.

141. The method according to any one of claims 135 to 140, wherein: In a case where the second target coordinated transmission mode includes a J-TX mode, the first response frame includes coordinated transmission information corresponding to the J-TX mode, where the coordinated transmission information corresponding to the J-TX mode includes at least one of the following: A list of STAs participating in the J-TX mode, CSI between the second AP and associated STAs participating in the J-TX mode, and CSI between the second AP and OBSS STAs participating in the J-TX mode.

142. The method according to any one of claims 135 to 141, wherein: In the case where the second target collaborative transmission mode includes the C-OFDMA mode, the first response frame includes collaborative transmission information corresponding to the C-OFDMA mode, and the collaborative transmission information corresponding to the C-OFDMA mode includes: the RU or MRU selected by the second AP.

143. The method according to any one of claims 135 to 142, wherein: In a case where the second target collaborative transmission mode includes a C-SR mode, the first response frame includes collaborative transmission information corresponding to the C-SR mode, where the collaborative transmission information corresponding to the C-SR mode includes at least one of the following: A list of STAs participating in C-SR mode, RSSI between the second AP and associated STAs participating in C-RS mode, and RSSI between the second AP and OBSS STAs participating in C-RS mode.

144. The method according to any one of claims 135 to 143, wherein: In a case where the second target cooperative transmission mode includes the C-UL MU-MIMO mode, the first response frame includes cooperative transmission information corresponding to the C-UL MU-MIMO mode.

145. The method according to any one of claims 135 to 144, wherein: The first response frame is a control frame.

146. The method according to claim 145, characterized in that The first response frame includes a collaborative transmission response field, and the second indication information and / or the target collaborative transmission information are carried in the collaborative transmission response field.

147. The method according to claim 146, characterized in that The collaborative transmission response field includes at least one of the following fields: An accepted collaborative transmission mode field is used to indicate the collaborative transmission mode in which the second AP participates; The participating STA list field is used to indicate the STAs participating in the second target cooperative transmission mode; The C-BF information field is used to indicate the collaborative transmission information corresponding to the C-BF mode; The C-OFDMA information field is used to indicate the coordinated transmission information corresponding to the C-OFDMA mode; The C-SR information field is used to indicate the collaborative transmission information corresponding to the C-SR mode; The J-TX information field is used to indicate the coordinated transmission information corresponding to the J-TX mode; The C-UL MU-MIMO information field is used to indicate the collaborative transmission information corresponding to the C-UL MU-MIMO mode.

148. The method according to claim 147, characterized in that The C-BF information field includes at least one of the following fields: The participating STA list field is used to indicate the STAs participating in the C-BF mode; At least one CSI field is used to indicate the CSI between the second AP and at least one STA participating in the C-BF mode.

149. The method according to claim 147 or 148, characterized in that The J-TX information field includes at least one of the following fields: The participating STA list field is used to indicate the STAs participating in the J-TX mode; At least one CSI field is used to indicate the CSI between the second AP and at least one STA participating in the J-TX mode.

150. The method according to any one of claims 147 to 149, wherein The C-SR information field includes at least one of the following fields: The participating STA list field is used to indicate the STAs participating in the C-SR mode; At least one RSSI field is used to indicate the RSSI between the second AP and at least one STA participating in the C-SR mode.

151. The method according to any one of claims 147 to 150, wherein: The C-OFDMA information field includes: The selected RU / MRU field is used to indicate the RU / MRU selected by the second AP.

152. The method according to any one of claims 135 to 144, wherein: The first response frame is a quality of service (QoS) empty frame, and the second indication information and / or the target collaborative transmission information are carried in an aggregation control (A-Control) field in the QoS empty frame.

153. The method according to claim 152, characterized in that The A-Control field includes a control information field, and the second indication information and / or the target collaborative transmission information is carried in the control information field.

154. The method according to claim 153, characterized in that The control information field includes at least one of the following: An accepted collaborative transmission mode field is used to indicate the collaborative transmission mode in which the second AP participates; The collaborative transmission mode information field is used to indicate the target collaborative transmission information.

155. The method according to claim 154, characterized in that The collaborative transmission mode information field includes at least one of the following fields: The participating STA list field is used to indicate the STAs participating in the second target cooperative transmission mode; At least one CSI field, used to indicate CSI between the second AP and at least one STA participating in C-BF mode and / or J-TX mode; At least one RSSI field, used to indicate the RSSI between the second AP and at least one STA participating in the C-SR mode; The selected RU / MRU field is used to indicate the RU / MRU selected by the second AP.

156. The method according to claim 154 or 155, characterized in that In the case where the second target cooperative transmission mode includes the C-BF mode, the cooperative transmission mode information field The following fields are included: The Participating STA List field is used to indicate the STAs participating in the C-BF mode.

157. The method according to any one of claims 154 to 156, wherein: In a case where the second target cooperative transmission mode includes the J-TX mode, the cooperative transmission mode information field includes: a participating STA list field, used to indicate STAs participating in the J-TX mode.

158. The method according to any one of claims 154 to 157, wherein: In the case where the second target cooperative transmission mode includes the C-SR mode, the cooperative transmission mode information field includes at least one of the following fields: The RSSI field of the associated STA is used to indicate the RSSI between the second AP and at least one associated STA participating in the C-SR mode; The RSSI field of the OBSS STA is used to indicate the RSSI between the second AP and at least one OBSS STA participating in the C-SR mode.

159. The method according to any one of claims 154-158, characterized in that In a case where the second target coordinated transmission mode includes a C-OFDMA mode, the coordinated transmission mode information field includes: The selected RU / MRU field is used to indicate the RU / MRU selected by the second AP.

160. The method according to claim 147 or 154, characterized in that The accepted collaborative transmission mode field includes at least one of the following fields: Accept C-BF field, used to indicate whether the second AP participates in multi-AP collaborative transmission in C-BF mode; Accept C-OFDMA field, used to indicate whether the second AP participates in multi-AP collaborative transmission in C-OFDMA mode; Accept C-SR field, used to indicate whether the second AP participates in multi-AP collaborative transmission in C-SR mode; Accept J-TX field, used to indicate whether the second AP participates in multi-AP collaborative transmission in J-TX mode; The Accept C-UL MU MIMO field is used to indicate whether the second AP participates in multi-AP cooperative transmission in the C-UL MU MIMO mode.

161. The method according to claim 147 or 154, characterized in that The Accepted Collaborative Transmission Mode field includes: The accepted collaborative transmission mode subfield is used to indicate the collaborative transmission mode in which the second AP participates.

162. The method according to any one of claims 92-161, characterized in that The method further comprises: The second AP receives a first notification frame sent by the first AP, where the first notification frame is used to notify the APs participating in the collaborative transmission of collaborative transmission parameters used.

163. The method according to claim 162, characterized in that The first notification frame includes first notification information, and the first notification information includes at least one of the following: third indication information, used to indicate a third target cooperative transmission mode, where the third target cooperative transmission mode is the cooperative transmission mode determined to be adopted by the first AP; and a list of APs participating in the third target cooperative transmission mode; Coordinated transmission parameters for the third target coordinated transmission mode.

164. The method according to claim 163, characterized in that The collaborative transmission parameter for the third target collaborative transmission mode includes at least one of the following: Cooperative transmission parameters for C-BF mode; Cooperative transmission parameters for C-OFDMA mode; Cooperative transmission parameters for C-SR mode; Cooperative transmission parameters for J-TX mode; Cooperative transmission parameters for C-UL-MU-MIMO.

165. The method according to claim 164, characterized in that The collaborative transmission parameters for the C-BF mode include: List of APs participating in C-BF mode, used for the transmission matrix of each AP participating in C-BF mode.

166. The method according to claim 164 or 165, characterized in that The collaborative transmission parameters for the J-TX mode include at least one of the following: a list of APs participating in the J-TX mode, and a transmission matrix for each AP participating in the J-TX mode.

167. The method according to any one of claims 164-166, characterized in that The collaborative transmission parameters for the C-OFDMA mode include: a list of APs participating in the C-OFDMA mode, and a RU / MRU for each AP participating in the C-OFDMA mode.

168. The method according to any one of claims 164-167, characterized in that The collaborative transmission parameters for the C-SR mode include at least one of the following: List of APs participating in C-SR mode, used to set the transmit power of each AP participating in C-SR mode.

169. The method according to any one of claims 164-168, characterized in that The collaborative transmission parameter for the C-UL-MU-MIMO mode includes at least one of the following: A list of APs participating in C-UL-MU-MIMO mode, used for spatial stream allocation information of each AP participating in C-UL-MU-MIMO mode.

170. The method according to any one of claims 163 to 169, wherein: The first notification frame includes a collaborative transmission notification field, and the first notification information is carried in the collaborative transmission notification field.

171. The method according to claim 170, characterized in that The collaborative transmission notification field includes at least one of the following fields: The adopted collaborative transmission mode field is used to indicate the third target collaborative transmission mode; An AP list field is used to indicate the APs participating in the third target cooperative transmission mode; The C-BF parameter field is used to indicate the collaborative transmission parameters corresponding to the C-BF mode; The C-OFDMA parameter field is used to indicate the coordinated transmission parameters corresponding to the C-OFDMA mode; The C-SR parameter field is used to indicate the coordinated transmission parameters corresponding to the C-SR mode; The J-TX parameter field is used to indicate the coordinated transmission parameters corresponding to the J-TX mode; The C-UL MU-MIMO parameter field is used to indicate the coordinated transmission parameters corresponding to the C-UL MU-MIMO mode.

172. The method according to claim 171, characterized in that The adopted collaborative transmission mode field includes at least one of the following fields: The C-BF field is used to indicate whether to use the multi-AP collaborative transmission in C-BF mode; The C-OFDMA field is used to indicate whether to use the multi-AP collaborative transmission in C-OFDMA mode; The C-SR field is used to indicate whether to use multi-AP collaborative transmission in C-SR mode; The J-TX field is used to indicate whether to use the multi-AP collaborative transmission in J-TX mode; The C-UL MU MIMO field is used to indicate whether to adopt multi-AP cooperative transmission in C-UL MU MIMO mode.

173. The method according to claim 171, characterized in that The adopted collaborative transmission mode field includes: The cooperative transmission mode subfield is used to indicate the cooperative transmission mode used.

174. The method according to any one of claims 171 to 173, wherein: The C-BF parameter field includes at least one of the following fields: The AP list field is used to indicate at least one AP participating in the C-BF mode; At least one transmission matrix field corresponds to at least one AP participating in the C-BF mode and is used to indicate a transmission matrix used by the AP participating in the C-BF mode.

175. The method according to any one of claims 171 to 174, wherein The J-TX parameter field includes at least one of the following fields: The AP list field is used to indicate at least one AP participating in the J-TX mode; At least one transmission matrix field corresponds to at least one AP participating in the J-TX mode and is used to indicate a transmission matrix used by the AP participating in the J-TX mode.

176. The method according to any one of claims 171 to 175, wherein: The C-OFDMA parameter field includes at least one of the following fields: The AP list field is used to indicate at least one AP participating in the C-OFDMA mode; At least one RU / MRU field corresponds to at least one AP participating in the C-OFDMA mode and is used to indicate the RU or MRU used by the AP participating in the C-OFDMA mode.

177. The method according to any one of claims 171 to 176, wherein: The C-SR parameter field includes at least one of the following fields: The AP list field is used to indicate at least one AP participating in the C-SR mode; At least one transmit power field corresponds to at least one AP participating in the C-SR mode and is used to indicate the transmit power used by the AP participating in the C-SR mode.

178. The method according to any one of claims 171 to 177, wherein The C-UL MU-MIMO parameter field includes at least one of the following fields: The AP list field is used to indicate at least one AP participating in the C-UL MU-MIMO mode; At least one SS allocation field corresponds to at least one AP participating in the C-UL MU-MIMO mode and is used to indicate SS allocation information used by the AP participating in the C-UL MU-MIMO mode.

179. The method according to any one of claims 163-178, wherein The first notification frame is further used to trigger the AP to perform multi-AP coordinated transmission using the third target coordinated transmission mode.

180. A first access point AP, characterized in that: include: A communication unit is used to send a first request frame to at least one second AP, wherein the first request frame includes first indication information and / or a target collaborative transmission command, wherein the first indication information is used to indicate a first target collaborative transmission mode, the first target collaborative transmission mode is a collaborative transmission mode in which the first AP requests the at least one second AP to participate, and the target collaborative transmission command is a collaborative transmission command corresponding to the first target collaborative transmission mode.

181. A second access point AP, characterized in that: include: A communication unit is used to receive a first request frame sent by a first AP, wherein the first request frame includes first indication information and / or a target collaborative transmission command, wherein the first indication information is used to indicate a first target collaborative transmission mode, the first target collaborative transmission mode is a collaborative transmission mode in which the first AP requests the second AP to participate, and the target collaborative transmission command is a collaborative transmission command corresponding to the first target collaborative transmission mode.

182. An access point, characterized in that include: A processor and a memory, the memory being used to store a computer program, the processor being used to call and run the computer program stored in the memory to execute the method as claimed in any one of claims 1 to 91, or the method as claimed in any one of claims 92 to 179.

183. A chip, characterized in that: include: A processor, configured to call and run a computer program from a memory so that a device equipped with the chip executes a method as claimed in any one of claims 1 to 91, or a method as claimed in any one of claims 92 to 179.

184. A computer-readable storage medium, characterized in that Used to store a computer program, the computer program causing a computer to execute the method according to any one of claims 1 to 91, or the method according to any one of claims 92 to 179.

185. A computer program product, characterized in that Comprising computer program instructions, which cause a computer to perform the method of any one of claims 1 to 91, or the method of any one of claims 92 to 179.

186. A computer program, characterized in that The computer program enables a computer to execute the method according to any one of claims 1 to 91 or the method according to any one of claims 92 to 179.

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