Transmission method, device, equipment, storage medium, and program product

Abstract

A transmission method, apparatus, device, storage medium, and program product, belonging to the field of wireless communication technology, includes the steps of: a first STA device in a first BSS eavesdropping or receiving a data unit on a first BSS channel to obtain first eavesdropping or receiving status information (201), the first eavesdropping or receiving status information being used to indicate transmission information of a first target station in a second BSS eavesdropped or received by the first STA device, the first target station being a station whose initiated transmission affects or interferes with frame exchanges in the first BSS of the first STA device; and a step of reporting the first eavesdropping or receiving status information to a first AP device in the first BSS (202).

Description

[Technical Field]

[0001] The present application relates to the field of wireless communication technology, and in particular to a transmission method, an apparatus, a device, a storage medium, and a program product. [Background technology]

[0002] In Wireless Local Area Networks (WLANs), Target Wake Time (TWT) is used to support energy saving in large-scale Internet of Things environments.

[0003] IEEE 802.11be provides for Restricted TWT operation, allowing Access Points (APs) to utilize enhanced media access protection and resource reservation mechanisms, providing more predictable, lower worst-case delay and jitter, and higher reliability for the transmission of low-latency services.

[0004] However, Wi-Fi networks usually have overlapping basic service sets (OBSSs), which may interfere with the Restricted TWT operation in the BSS, thus affecting the transmission delay under the Restricted TWT operation. Summary of the Invention [Means for solving the problem]

[0005] The embodiments of the present application provide a transmission method, a device, an apparatus, a storage medium, and a program product.

[0006] In one aspect, an embodiment of the present application provides a transmission method, the method being performed by a first station (STA) device in a first basic service set (BSS), the first STA device being a non-AP STA, and the method comprising: a step of eavesdropping or receiving a data unit on a first BSS channel and obtaining first eavesdropping or reception status information, the first eavesdropping or reception status information being used to indicate transmission information of a first target station in a second BSS that has been eavesdropped or received by the first STA device, the first target station being a station whose initiated transmission affects or interferes with frame exchange in the first BSS of the first STA device; and reporting the first intercepted or received status information to a first AP device in the first BSS.

[0007] In one aspect, an embodiment of the present disclosure provides a transmission method, the method being performed by a first AP device in a first BSS, the method comprising: acquiring overhearing or reception status information, the overhearing or reception status information being used to indicate transmission information of a target station in a second BSS that is overheared or received by a station in the first BSS on a first BSS channel, the target station being a station whose initiated transmission will affect or interfere with a frame exchange in the first BSS of a station in the first BSS; and a step of sharing target resource information and / or target station information with a second AP device in the second BSS according to the intercepted or reception status information, wherein the target resource information and / or target station information is used by the second AP device to restrict transmission on a target channel and / or target time of a station in the second BSS, and the target channel and / or target time are channels and / or times for which media access protection in the first BSS is required.

[0008] In one aspect, an embodiment of the present invention provides a transmission method, the method being performed by a second AP device in a second BSS, the method comprising: receiving target resource information and / or target station information shared by a first AP device in a first BSS, the target resource information and / or target station information being shared by the first AP device according to intercepted or received status information, the intercepted or received status information being used to indicate transmission information of a target station in the second BSS that has been intercepted or received by a station in the first BSS, the target station being a station whose initiated transmission will affect or interfere with frame exchange in the first BSS of a station in the first BSS; and restricting transmission on a target channel and / or a target time of a station in the second BSS according to the target resource information and / or the target station information, wherein the target channel and / or the target time are channels and / or times for which media access protection in the first BSS is required.

[0009] In one aspect, an embodiment of the present application provides a transmission method, the method being performed by a third STA device in a second BSS, the third STA device being a non-AP STA, the method comprising: receiving a channel resource protection on notification frame transmitted by a second AP device in the second BSS, the channel resource protection on notification frame being transmitted by the second AP device after the second AP device receives target resource information and / or target station information transmitted by a first AP device in the first BSS, the target resource information and / or target station information being shared by the first AP device according to overhearing or reception status information, the overhearing or reception status information being used to indicate transmission information of a target station in the second BSS that has been overheared or received by a station in the first BSS, the target station being a station whose initiated transmission affects or interferes with frame exchange in the first BSS of a station in the first BSS; The method includes a step of restricting transmission of the third STA device on a target channel and / or target time in response to the channel resource protection on notification frame, wherein the target channel and / or target time are the channel and / or time at which media access protection in the first BSS is required.

[0010] In another aspect, embodiments of the present invention provide a transmission device, the device comprising: an interception module used to intercept or receive data units on a first BSS channel and obtain first interception or reception status information, the first interception or reception status information being used to indicate transmission information of a first target station in a second BSS that is intercepted or received by the first STA device, the first target station being a station whose initiated transmission affects or interferes with frame exchanges in the first BSS of the first STA device; a reporting module used to report the first intercepted or received status information to a first AP device in the first BSS.

[0011] In another aspect, embodiments of the present invention provide a transmission device, the device comprising: an information acquisition module used to acquire overhearing or reception status information, the overhearing or reception status information being used to indicate transmission information of a target station in a second BSS that a station in a first BSS overhears or receives on a first BSS channel, the target station being a station whose initiated transmission affects or interferes with frame exchange in the first BSS of a station in the first BSS; a transmitting module used to share target resource information and / or target station information with a second AP device in the second BSS according to the intercepted or received status information, wherein the target resource information and / or target station information is used by the second AP device to restrict transmission on a target channel and / or target time of a station in the second BSS, and the target channel and / or target time are a channel and / or time for which media access protection in the first BSS is required.

[0012] In another aspect, embodiments of the present invention provide a transmission device, the device comprising: a receiving module used to receive target resource information and / or target station information shared by a first AP device in a first BSS, the target resource information and / or target station information being shared by the first AP device according to overhearing or reception status information, the overhearing or reception status information being used to indicate transmission information of a target station in a second BSS overheard or received by a station in the first BSS, the target station being a station whose initiated transmission affects or interferes with frame exchange in the first BSS of a station in the first BSS; a restriction module used to restrict transmission on a target channel and / or a target time of a station in the second BSS according to information on the target resource and / or information on the target station, wherein the target channel and / or the target time are channels and / or times for which media access protection in the first BSS is required.

[0013] In another aspect, embodiments of the present invention provide a transmission device, the device comprising: a receiving module used to receive a channel resource protection on notification frame transmitted by a second AP device in a second BSS, the channel resource protection on notification frame being transmitted by the second AP device after the second AP device receives target resource information and / or target station information transmitted by a first AP device in a first BSS, the target resource information and / or target station information being shared by the first AP device according to overhearing or reception status information, the overhearing or reception status information being used to indicate transmission information of a target station in the second BSS that is overheared or received by a station in the first BSS, the target station being a station whose initiated transmission affects or interferes with frame exchange in the first BSS of a station in the first BSS; and a restriction module used to restrict transmission on a target channel and / or target time of the third STA device in response to the channel resource protection on notification frame, the target channel and / or target time being a channel and / or time for which media access protection in the first BSS is required.

[0014] In yet another aspect, an embodiment of the present application provides a STA device, the STA device being a first STA device in a first BSS, and the first STA device being a non-AP STA, the STA device comprising: a processor, a memory, and a transceiver; The transceiver is used to intercept or receive data units on a first BSS channel and obtain first intercept or reception status information, and the first intercept or reception status information is used to indicate transmission information of a first target station in a second BSS that has been intercepted or received by the first STA device, the first target station being a station whose initiated transmission affects or interferes with frame exchanges in the first BSS of the first STA device, and reports the first intercept or reception status information to a first AP device in the first BSS.

[0015] In yet another aspect, an embodiment of the present application provides an AP device, the AP device being an AP device in a first BSS, the AP device comprising a processor, a memory, and a transceiver; The transceiver is used to acquire intercepting or receiving status information, which is used to indicate transmission information of a target station in a second BSS that a station in the first BSS intercepted or received on a first BSS channel, the target station being a station whose initiated transmission affects or interferes with frame exchange in the first BSS of the station in the first BSS, and, according to the intercepting or receiving status information, shares target resource information and / or target station information with a second AP device in the second BSS, which target resource information and / or target station information is used by the second AP device to restrict transmission on a target channel and / or target time of the station in the second BSS, the target channel and / or target time being the channel and / or time at which media access protection in the first BSS is required.

[0016] In yet another aspect, an embodiment of the present application provides an AP device, the AP device being an AP device in a second BSS, the AP device comprising a processor, a memory, and a transceiver; the transceiver is used to receive target resource information and / or target station information shared by a first AP device in a first BSS, the target resource information and / or target station information being shared by the first AP device according to intercepted or reception status information, the intercepted or reception status information being used to indicate transmission information of a target station in the second BSS that is intercepted or received by a station in the first BSS, the target station being a station whose initiated transmission affects or interferes with frame exchange in the first BSS of a station in the first BSS; The processor is used to restrict transmission on a target channel and / or a target time of a station in the second BSS according to information on the target resource and / or information on the target station, the target channel and / or the target time being a channel and / or a time at which media access protection in the first BSS is required.

[0017] In yet another aspect, an embodiment of the present application provides a STA device, the STA device being a third STA device in a second BSS, and the third STA device being a non-AP STA, the STA device comprising a processor, a memory, and a transceiver; the transceiver is used to receive a channel resource protection on notification frame transmitted by a second AP device in the second BSS, the channel resource protection on notification frame being transmitted by the second AP device after the second AP device receives target resource information and / or target station information transmitted by a first AP device in the first BSS, the target resource information and / or target station information being shared by the first AP device according to overhearing or reception status information, the overhearing or reception status information being used to indicate transmission information of a target station in the second BSS that is overheared or received by a station in the first BSS, the target station being a station whose initiated transmission affects or interferes with frame exchange in the first BSS of a station in the first BSS; The processor is used to restrict transmission of the third STA device on a target channel and / or target time in response to the channel resource protection on notification frame, the target channel and / or target time being a channel and / or time at which media access protection in the first BSS is required.

[0018] In yet another aspect, an embodiment of the present application provides a computer device, the computer device comprising a processor, a memory, and a transceiver, the memory storing a computer program, the computer program being executed by the processor and used to cause the computer device to implement the above-described transmission method.

[0019] In yet another aspect, an embodiment of the present application further provides a computer-readable storage medium having a computer program stored therein, the computer program being loaded and executed by a processor to cause a computer device to implement and realize the above transmission method.

[0020] In another aspect, a computer program product is provided, the computer program including computer instructions stored in a computer-readable storage medium, a processor of a computing device reading the computer instructions from the computer-readable storage medium, and the processor executing the computer instructions, thereby causing the computing device to perform the above-mentioned transmission method.

[0021] In another aspect, a chip is provided, the chip including a processor that is used to cause a computer device incorporating the chip to perform the above transmission method by calling up and executing a computer program from a memory.

[0022] In another aspect, a computer program is provided which, when executed by a processor of a computing device, causes the computing device to perform the above transmission method.

[0023] The technical solutions provided by the embodiments of the present application can bring the following beneficial effects:

[0024] When a first STA device (non-AP STA) in a first BSS overhears that a transmission initiated by a first target station in a second BSS affects or interferes with the frame exchange of the first STA device, it reports corresponding first overhearing or reception status information to a first AP device in the first BSS, thereby facilitating the first AP device to subsequently adopt corresponding measures according to the first overhearing or reception status information, thereby reducing the impact or interference of the first target station in the second BSS on the first STA device, and further reducing the transmission delay of the first STA device. [Brief explanation of the drawings]

[0025] In order to more clearly explain the technical solutions in the embodiments of the present application, the following will briefly describe the drawings that need to be used in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can obtain other drawings according to these drawings without any creative efforts. [Figure 1] 1 is a schematic diagram of a network architecture of a communication system according to an embodiment of the present application; [Figure 2] 2 is a flowchart of a transmission method according to an embodiment of the present application; [Figure 3] 2 is a flowchart of a transmission method according to an embodiment of the present application; [Figure 4] 2 is a flowchart of a transmission method according to an embodiment of the present application; [Figure 5] 2 is a flowchart of a transmission method according to an embodiment of the present application; [Figure 6] 1 is a framework diagram of a transmission system according to an exemplary embodiment of the present application; [Figure 7] 2 is a flowchart of a transmission method according to an embodiment of the present application; [Figure 8]FIG. 8 is a schematic diagram of a transmission scenario according to the embodiment shown in FIG. 7. [Figure 9] FIG. 8 is a schematic diagram of a transmission scenario according to the embodiment shown in FIG. 7. [Figure 10] FIG. 8 is a schematic diagram of a transmission scenario according to the embodiment shown in FIG. 7. [Figure 11] FIG. 8 is a schematic diagram of a transmission scenario according to the embodiment shown in FIG. 7. [Figure 12] FIG. 8 is a schematic diagram of a transmission scenario according to the embodiment shown in FIG. 7. [Figure 13] FIG. 8 is a schematic diagram of a transmission scenario according to the embodiment shown in FIG. 7. [Figure 14] FIG. 8 is a schematic diagram of a transmission scenario according to the embodiment shown in FIG. 7. [Figure 15] FIG. 1 is a block diagram of a transmission device according to an embodiment of the present application. [Figure 16] FIG. 1 is a block diagram of a transmission device according to an embodiment of the present application. [Figure 17] FIG. 1 is a block diagram of a transmission device according to an embodiment of the present application. [Figure 18] FIG. 1 is a block diagram of a transmission device according to an embodiment of the present application. [Figure 19] FIG. 1 is a schematic diagram illustrating the configuration of a computer device according to an embodiment of the present application. DETAILED DESCRIPTION OF THE INVENTION

[0026] To make the objectives, technical solutions and advantages of the present application clearer, the following describes the embodiments of the present application in more detail with reference to the accompanying drawings.

[0027] The network architectures and service scenarios described in the embodiments are intended to more clearly illustrate the technical solutions of the embodiments, and are not intended to limit the technical solutions of the embodiments. Those skilled in the art will appreciate that with the evolution of network architectures and the emergence of new service scenarios, the technical solutions of the embodiments can also be applied to similar technical problems.

[0028] The technical solutions of the present embodiments may be applied to various communication systems, such as Wireless Local Area Network (WLAN), Wireless Fidelity (WiFi), or other communication systems.

[0029] Illustratively, refer to Fig. 1, which is a schematic diagram of a network architecture of a communication system 100 according to one embodiment of the present application. The communication system 100 may include an access point 110 (i.e., AP) and a station 120 (i.e., STA) that accesses a network via the access point 110.

[0030] In some scenarios, an AP is also called an AP STA, i.e., in a sense, an AP is also a type of STA.

[0031] In some scenarios, the STA is also referred to as a non-AP STA.

[0032] The communication in the communication system 100 may 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. Here, the peer STA may refer to a device that performs peer-to-peer communication with the STA. For example, the peer STA may be an AP or a non-AP STA.

[0033] AP is a bridge that connects wired and wireless networks, and its main role is to connect individual wireless network clients to one another and then access the wireless network via Ethernet. AP devices can be terminal devices (e.g., mobile phones) equipped with Wi-Fi chips, or network devices (e.g., wireless routers, wireless switches, or wireless relay devices).

[0034] It should be understood that the role of an STA in a communication system is not absolute. For example, in some scenarios, if a mobile phone is connected to a router, the mobile phone is a non-AP STA, and if the mobile phone acts as a hotspot for other mobile phones, the mobile phone plays the role of an AP.

[0035] The AP and non-AP STA may be devices applied to the Internet of Vehicles, Internet nodes in the Internet of Things (IoT), sensors, smart cameras in smart homes, smart remote controls, smart water meters, and electricity meters, and sensors in smart cities.

[0036] In some embodiments, a non-AP STA may support the 802.11be standard. A non-AP STA may also support multiple 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.

[0037] In some embodiments, the AP may be a device that supports the 802.11be standard. The AP may also be a device that supports multiple current and future 802.11 family WLAN standards, such as 802.11ax, 802.11ac, 802.11n, 802.11g, 802.11b, and 802.11a.

[0038] In this embodiment, the STA may be a mobile phone, tablet computer (Pad), 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 device, 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 / application specific integrated circuit (ASIC) / system-level chip (SOC), etc. that supports WLAN or WiFi technology.

[0039] Frequency bands that can be 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).

[0040] FIG. 1 exemplarily illustrates one AP STA and two non-AP STAs, and alternatively, the communication system 100 may include multiple AP STAs and other numbers of non-AP STAs, and the present embodiment is not limited thereto.

[0041] It should be understood that in the present embodiment, a device having a communication function in a network / system may be referred to as a communication device. Taking the communication system 100 shown in Fig. 1 as an example, the communication device includes an access point 110 and a station 120 having a communication function, and the access point 110 and the station 120 may be the specific devices described above, but the description will not be repeated here. The communication device may further include other devices in the communication system 100, such as other network entities such as a network controller and a gateway, and the present embodiment is not limited thereto.

[0042] It should be understood that the terms "system" and "network" are often used interchangeably herein. The term "and / or" herein is merely a relational relationship describing related objects and indicates that three relationships may exist. For example, A and / or B may represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. Furthermore, the character " / " herein generally indicates that the related objects before and after it are in an "or" relationship.

[0043] It should be understood that the "instruction" referred to in the embodiments of the present application may be a direct instruction or an indirect instruction, or may represent an association relationship. For example, A instructing B may represent that A directly instructs B, or that B may obtain it through A, or that A indirectly instructs B, or that A instructs C, and B may obtain it through C, representing an association relationship between A and B.

[0044] In the description of the present embodiment, the term "correspondence" may indicate a direct or indirect correspondence between the two, an association between the two, or a relationship such as that between a pointing device and a pointed device, or a positioning device and a positioned device.

[0045] In this embodiment, "predefined" may be realized by pre-storing a code, a table, or other methods for indicating related information in a device (including, for example, an access point and a station), and the present application is not limited to this specific embodiment. For example, "pre-defined" may refer to something defined in a protocol.

[0046] In the present embodiment, the "protocol" may refer to a standard protocol in the communication field, for example, the WiFi protocol and related protocols applied to future WiFi communication systems, but the present application is not limited thereto.

[0047] The access point 110 and the station 120 may associate and communicate with each other via wireless local area network technology, where the association refers to the process of wireless link service negotiation between the STA and the AP, which is used to establish a wireless link between the STA and the AP.

[0048] In TWT, a schedule is established between the terminal and the AP (the schedule is agreed upon by the terminal and the AP), and the schedule consists of a TWT time period. When the time period negotiated between the terminal and the AP has elapsed, the terminal wakes up, waits for a trigger frame sent by the AP, and performs one data exchange. After this transmission is completed, the terminal returns to sleep. Each terminal negotiates independently with the AP, and each terminal has its own independent TWT time period.

[0049] TWT allows the AP to manage the operation of the BSS, thereby reducing contention between stations and shortening the wake-up time of stations using power consumption management modes. This is achieved by having stations operate in non-overlapping time and / or frequency domains and concentrating frame exchanges into a predefined service period. Therefore, to ensure the effectiveness of TWT, the AP generally requires all associated stations in the BSS to be able to join TWT, facilitating AP scheduling. According to the 11ax TWT protocol, a High-Efficiency (HE) AP requests all associated stations that declare that they support TWT to participate in TWT. After receiving an instruction from the AP to join TWT, non-AP stations negotiate an individual TWT protocol or join broadcast TWT. Furthermore, the TWT service period (SP) includes both trigger-enabled and non-trigger-enabled SPs. The TWT scheduling AP schedules by transmitting a trigger frame in a trigger-enabled SP. At the same time, 11ax specifies that a TWT-scheduling station cannot transmit frames to the TWT scheduling AP except in a broadcast TWT SP, and that in a trigger-enabled broadcast TWT, a TWT-scheduling station cannot transmit frames that do not carry a High Efficiency Trigger-Based Physical layer Protocol Data Unit (HE TB PPDU) to the TWT scheduling AP.

[0050] IEEE 802.11be proposes Restricted TWT operation, allowing APs to utilize enhanced medium access protection and resource reservation mechanisms, thereby providing more predictable, lower worst-case delay and jitter, and higher reliability for the transmission of low-latency services. Currently, Restricted TWT adds two main channel access rules for channel access: an Extremely High Throughput (EHT) non-AP station (non-AP STA) is the owner of a Transmission Opportunity (TXOP), and if the TXOP is obtained outside the restricted TWT service period, it should ensure that the TXOP is completed before the start of any one restricted TWT service period; and an EHT AP schedules a quiet interval that overlaps with the restricted TWT service period, thereby blocking operations within the TWT SP of legacy STAs that support the Quiet Element, but blocking operations within the quiet interval are disabled for non-AP EHT STAs.

[0051] The enhanced medium access protection operation defined in IEEE 802.11be for Restricted TWT primarily restricts the operation of stations in a BSS that performs Restricted TWT operation. In WiFi networks, overlapping BSSs (OBSSs) often exist, which interfere with Restricted TWT operation in a BSS and prevent APs or Restricted TWT member stations from obtaining timely transmission opportunities to transmit low-latency service data during the Restricted TWT service period. Therefore, it is necessary to define a multi-AP or multi-BSS coordination mechanism to provide media protection for transmissions during the Restricted TWT service period in a BSS. The following are the main issues that need to be resolved:

[0052] 1) Regarding how to identify an interfering link, the focus is on how to identify an OBSS STA, where an OBSS STA refers to a STA in an OBSS whose transmission interferes with the transmission of an AP or r-TWT STA in a BSS where Restricted TWT operation exists during the Restricted TWT service period.

[0053] 2) How to control the operation of the OBSS STA during the Restricted TWT service period in order to protect the transmission of the AP or the low latency service of the Restricted TWT member station.

[0054] 3) How to protect the transmission of low-latency service data during the Restricted TWT service period while reducing the impact on transmission between stations in the OBSS. For example, if the AP and r-TWT STA of the BSS where Restricted TWT operation exists are not in the OBSS overlap region, the OBSS AP may be allowed to initiate downlink transmission with the OBSS STA during the Restricted TWT service period.

[0055] Referring to FIG. 2, FIG. 2 is a flowchart of a transmission method according to an embodiment of the present application. The method may be performed by a first station STA device in a first BSS, where the first STA device is a non-AP STA. Here, the first basic service set BSS includes a first AP device and at least one non-AP STA device associated with the first AP device. The first STA device is any one of the at least one non-AP STA device associated with the first AP device. Here, the non-AP STA device may be one of the stations 120 in the network architecture shown in FIG. 1, and the AP device may be an access point 110 in the network architecture shown in FIG. 1. The method may include the following steps:

[0056] Step 201: intercept or receive a data unit on a first BSS channel, and obtain first intercept or reception status information, which is used to indicate transmission information of a first target station in a second BSS intercepted or received by the first STA device, where the first target station is a station whose initiated transmission affects or interferes with frame exchange in the first BSS of the first STA device.

[0057] In some embodiments, the first BSS channel is the channel used by the first STA device for contention access and transmission.

[0058] The above-mentioned second BSS is a BSS other than the first BSS, for example, the second BSS may be an OBSS of a station in the first BSS, or may be a BSS operating on the same channel as the first BSS.

[0059] Here, in this embodiment of the present application, the present invention is applied to a scenario in which a first STA device performs channel contention or transmission on a first BSS channel within a specified period, for example, a scenario in which the first STA device performs channel contention or transmission based on the r-TWT mechanism.

[0060] Alternatively, the data unit may be a presentation protocol data unit (PPDU).

[0061] Step 202: Report first intercepted or received status information to a first AP device in a first BSS.

[0062] In some embodiments, the first AP device can then reduce signal interference to the first STA device caused by the first target station's transmission in the second BSS by adopting corresponding measures in response to the first intercepted or received status information, including, but not limited to, restricting the station's transmission in the second BSS, adjusting the first BSS channel used by the first STA device, adjusting the channel contention or transmission time (e.g., r-TWT) of the first STA device, etc.

[0063] Here, the signal interference caused by the transmission refers to the effect or interference of the initiated transmission on the frame exchange of other stations.

[0064] For example, the first intercepted or received status information is used by a first access point AP device in a first BSS to share target resource information and / or target station information with a second AP device in a second BSS. The target resource information and / or target station information is used by the second AP device to restrict transmission on a target channel and / or a target time of a station in the second BSS. The target channel and / or the target time are a channel and / or a time on which media access protection in the first BSS is required.

[0065] As described above, in the present embodiment, when a first STA device (non-AP STA) in a first BSS overhears that a transmission initiated by a first target station in a second BSS affects or interferes with the frame exchange of the first STA device, the first STA device reports corresponding first overhearing or reception status information to a first AP device in the first BSS, thereby facilitating the first AP device to subsequently adopt corresponding measures according to the first overhearing or reception status information, thereby reducing the impact or interference of the first target station in the second BSS on the first STA device, and further reducing the transmission delay of the first STA device.

[0066] Referring to Fig. 3, Fig. 3 is a flowchart of a transmission method according to an embodiment of the present application. The method may be performed by a first AP device in a first BSS, where the first BSS includes the first AP device and at least one non-AP STA device associated with the first AP device. The non-AP STA device may be one of the stations 120 in the network architecture shown in Fig. 1, and the AP device may be the access point 110 in the network architecture shown in Fig. 1. The method may include the following steps:

[0067] Step 301: Obtaining intercepted or receiving status information, which is used to indicate transmission information of a target station in a second BSS that is intercepted or received by a station in a first BSS on a first BSS channel, where the target station is a station whose initiated transmission affects or interferes with the frame exchange in the first BSS of the station in the first BSS.

[0068] In some embodiments, the intercepted or received status information obtained by the first AP device may include intercepted or received status information obtained by non-AP STA intercepted or received data units in the first BSS, and / or intercepted or received status information obtained by the first AP device itself intercepted or received data units.

[0069] Accordingly, the stations in the first BSS may include non-AP STAs in the first BSS (eg, the first STA device in the embodiment shown in FIG. 2 above) and / or the first AP device.

[0070] Step 302: According to the intercepted or received status information, share target resource information and / or target station information with a second AP device in the second BSS, and the target resource information and / or target station information is used by the second AP device to restrict transmission on a target channel and / or target time of the station in the second BSS, where the target channel and / or target time are the channel and / or time for which media access protection in the first BSS is required.

[0071] Here, a direct or indirect communication connection may be established between the first AP and the second AP, that is, data communication may be performed between the first AP and the second AP.

[0072] In some embodiments, the target channel may be all or some of the channels used by stations in the first BSS, for example, the target channel may be all or some of the channels used by stations in the first BSS that have intercepted influence or interference from the second BSS.

[0073] The target time may be a time when stations in the first BSS are likely to contend for the channel or transmit.

[0074] As described above, in the present embodiment, when a station in a first BSS overhears that a transmission initiated by a target station in a second BSS affects or interferes with the frame exchange of the station in the first BSS, the first AP device in the first BSS shares information about the target resource and / or information about the target station with the second AP device according to the corresponding overhearing or reception status information, so that the second AP device can restrict the transmission in the second BSS, thereby reducing the impact or interference of the station in the second BSS on the station in the first BSS as much as possible, and further reducing the transmission delay of the station in the first BSS.

[0075] Referring to Fig. 4, Fig. 4 is a flowchart of a transmission method according to an embodiment of the present application. The method may be performed by a second AP device in a second BSS, where the second BSS includes the second AP device and at least one non-AP STA device associated with the second AP device. The non-AP STA device may be one of the stations 120 in the network architecture shown in Fig. 1, and the AP device may be the access point 110 in the network architecture shown in Fig. 1. The method may include the following steps:

[0076] Step 401: Receive target resource information and / or target station information shared by a first AP device in a first BSS, where the target resource information and / or target station information is shared by the first AP device according to intercepted or received status information, and the intercepted or received status information is used to indicate transmission information of a target station in a second BSS that is intercepted or received by a station in the first BSS, where the target station is a station whose initiated transmission affects or interferes with the frame exchange in the first BSS of the station in the first BSS.

[0077] Step 402: Restrict transmission on a target channel and / or a target time of a station in the second BSS according to information on the target resource and / or information on the target station, where the target channel and / or the target time are channels and / or times on which media access protection in the first BSS is required.

[0078] Here, restricting transmission on the target channel and / or target time of a station in the second BSS may refer to restricting operations such as channel contention, transmission, etc. on the target channel and / or target time of a station in the second BSS.

[0079] The above restriction of transmission on the target channel and / or target time of stations in the second BSS may refer to restriction of transmission on the target channel and / or target time of all or some of the stations in the second BSS (e.g., stations whose influence or interference of transmissions originating from stations in the second BSS is overheard or received by stations in the first BSS).

[0080] Based on the above, in this embodiment of the present application, if a station in a first BSS overhears that a transmission initiated by a target station in a second BSS affects or interferes with the frame exchange of the station in the first BSS, the first AP device in the first BSS may share information about the target resource and / or information about the target station with the second AP device according to the corresponding overhearing or receiving status information, and the second AP device can restrict the transmission in the second BSS, reduce the impact or interference of the station in the second BSS on the station in the first BSS as much as possible, and further reduce the transmission delay of the station in the first BSS.

[0081] Referring to FIG. 5, FIG. 5 is a flowchart of a transmission method according to an embodiment of the present application. The method may be performed by a third STA device in a second BSS, where the second BSS includes a second AP device and at least one non-AP STA device associated with the second AP device. The third STA device is a non-AP STA device, i.e., one of the at least one non-AP STA devices associated with the second AP device. The non-AP STA device may be one of the stations 120 in the network architecture shown in FIG. 1, and the AP device may be an access point 110 in the network architecture shown in FIG. 1. The method may include the following steps:

[0082] Step 501: receive a channel resource protection on notification frame transmitted by a second AP device in a second BSS. The channel resource protection on notification frame is transmitted by the second AP device after receiving target resource information and / or target station information transmitted by a first AP device in a first BSS, and the target resource information and / or target station information is shared by the first AP device according to intercepted or received status information. The intercepted or received status information is used to indicate the transmission information of the target station in the second BSS intercepted or received by the station in the first BSS, and the target station is a station whose initiated transmission affects or interferes with the frame exchange in the first BSS of the station in the first BSS.

[0083] Step 502: In response to the channel resource protection on notification frame, restrict transmission of the third STA device on a target channel and / or target time, where the target channel and / or target time are the channel and / or time at which media access protection in the first BSS is required.

[0084] Based on the above, in this embodiment of the present application, if a station in a first BSS overhears that a transmission initiated by a target station in a second BSS affects or interferes with the frame exchange of the station in the first BSS, the first AP device in the first BSS may share information about the target resource and / or the target station with the second AP device according to the corresponding overhearing or reception status information, and after receiving the information about the target resource and / or the target station, the second AP device may use a channel resource protection on notification frame to instruct the third STA device in the second BSS to restrict transmission on the target channel and / or target time, thereby reducing the impact or interference of the station in the second BSS on the station in the first BSS as much as possible and further reducing the transmission delay of the station in the first BSS.

[0085] Based on the above schemes shown in Figures 2 to 5, taking the example that the second BSS is an OBSS of the first BSS, refer to Figure 6, which is a framework diagram of a transmission system according to an exemplary embodiment of the present application. As shown in Figure 6, the system according to the embodiment of the present application has two BSSs, one is BSS1 corresponding to AP1 and its associated station STA1, and the other is BSS2 corresponding to AP2 and its associated station STA2. Here, BSS2 is the OBSS of BSS1, and to address the OBSS interference problem, resource protection is performed for transmissions between specific stations during a scheduled time period of BSS1, and the following method is adopted.

[0086] S61, BSS transmission-related stations (e.g., AP1 and STA1 in Fig. 6) that need to perform radio resource protection during the scheduled time period obtain specific information related to the OBSS transmission (corresponding to the above-mentioned intercepted and received information) by intercepting or receiving the OBSS PPDU.

[0087] Here, STA1 may report to AP1 certain information related to the transmission of the OBSS that it has obtained by eavesdropping or receiving.

[0088] In step S62, AP1 shares with AP2 (corresponding to the information about the target resource and / or the information about the target station) the scheduled time period for which radio resource protection is required (corresponding to the information about the target time period described above, e.g., r-TWT SP information corresponding to STA1) and / or the information about the channel for which radio resource protection is required (corresponding to the information about the target channel described above) with AP2 (corresponding to the information about the target resource and / or the information about the target station shared by the first AP device described above with the second AP device).

[0089] Optionally, AP1 may further share with AP2 the stations associated with the OBSS that require channel access and transmission restrictions (e.g., information about stations associated with specific information related to OBSS transmissions that STA1 and / or AP1 have fed back).

[0090] S63, after receiving the above information shared by AP1, AP2 restricts channel access and transmission of stations related to the OBSS (i.e., associated stations related to AP2, e.g., STA2) before the start of the above scheduled time period and / or during the scheduled time period.

[0091] Based on the solutions shown in Figures 2 to 5 above, refer to Figure 7, which is a flowchart of a transmission method according to an embodiment of the present application. The method may be performed by a first STA device in a first BSS, a first AP device in the first BSS, a second AP device in a second BSS, and a non-AP STA device in the second BSS. The first STA device is a non-AP STA. The non-AP STA device may be one of the stations 120 in the network architecture shown in Figure 1, and the AP device may be the access point 110 in the network architecture shown in Figure 1. The method may include the following steps:

[0092] Step 701: A first STA device eavesdrops or receives a data unit on a first BSS channel and obtains first eavesdropping or reception status information.

[0093] Here, the first intercepted or received status information is used to indicate the transmission information of the first target station in the second BSS that is intercepted or received by the first STA device, and the first target station is a station whose initiated transmission affects or interferes with the frame exchange in the first BSS of the first STA device.

[0094] Alternatively, the above-mentioned first intercepted or received status information is used to indicate a first target station whose transmission originated in the second BSS and intercepted or received by the first STA device affects or interferes with the first STA device.

[0095] Here, in a scenario where the first STA device contends for a channel or transmits on the first BSS channel within a specified period, the first STA device may overhear or receive a data unit on the first BSS channel within the specified period. Optionally, the first STA device may not overhear or receive a data unit within a period other than the specified period.

[0096] For example, in a scenario in which a first STA device performs channel contention or transmission based on the r-TWT mechanism, the first STA device overhears or receives a data unit within the r-TWT SP period of the first STA device, and does not perform an operation of overhearing or receiving a data unit within a period other than the r-TWT SP period.

[0097] Here, the data unit may be a PPDU.

[0098] The second BSS may be an OBSS of the first BSS, or may be another BSS operating on the same channel as the first BSS.

[0099] In some embodiments, the first overheard or reception status information is used by a first access point AP device in a first BSS to share target resource information and / or target station information with a second AP device in a second BSS. The target resource information and / or target station information is used by the second AP device to restrict transmissions on target channels and / or target times of stations in the second BSS. The target channels and / or target times are channels and / or times at which media access protection in the first BSS is required, and may be, for example, channels and / or times corresponding to the impact or interference that transmissions initiated by stations in the second BSS will have on stations in the first BSS.

[0100] In some embodiments, the first intercepted or reception status information includes station information for the first target station.

[0101] Here, the above station information may include at least one of information related to the transmission of the intercepted or received data unit and information related to the station corresponding to the intercepted or received data unit.

[0102] In some embodiments, if the data unit is a PPDU, the station information may include PPDU transmission information corresponding to the PPDU, and the PPDU transmission information may include: The transmission sub-information includes at least one of a transmission type, a BSS color, a BSS identifier (BSSID), a sender association identifier (AID), a sender partial AID, a sender Media Access Control (MAC) address, a receiver association identifier (AID), a receiver partial AID, and a receiver MAC address, where the transmission type includes upstream transmission, downstream transmission, or point-to-point P2P transmission.

[0103] In some embodiments, when the first STA device intercepts or receives a data unit, if the BSS identification information included in the intercepted or received first PPDU is different from the BSS identification information of the first BSS, it determines that the station information carried by the first PPDU includes information of the first target station, i.e., the station corresponding to the first PPDU is the first target station.

[0104] Here, when the first STA device intercepts or receives a data unit on the first BSS channel, if the identification information of the BSS corresponding to the intercepted or received PPDU is different from the identification information of the BSS in which the first STA device is currently located, it means that the first STA device has received a PPDU transmitted by a station in another BSS (e.g., an OBS), i.e., in this case, the station in the other BSS initiates transmission, but affects or interferes with the channel contention or transmission of the first STA device.

[0105] In some embodiments, the BSS identification information includes at least one of a BSSID and a BSS color.

[0106] For example, after a first STA device intercepts or receives a PPDU on a first BSS channel, if the BSSID in the PPDU is different from the BSSID of the first BSS, it may determine that it has received a PPDU transmitted by a station in another BSS.

[0107] For example, after a first STA device intercepts or receives a PPDU on a first BSS channel, if the BSS color in the PPDU is different from the BSS color of the first BSS, it may determine that it has received a PPDU transmitted by a station in another BSS.

[0108] For example, after a first STA device intercepts or receives a PPDU on a first BSS channel, if the BSSID in the PPDU is different from the BSSID of the first BSS and the BSS color in the PPDU is different from the BSS color of the first BSS, it may determine that it has received a PPDU transmitted by a station in another BSS.

[0109] Step 702: A first STA device reports first intercepted or reception status information to a first AP device in a first BSS, and in response, the first AP device receives the first intercepted or reception status information.

[0110] For example, in response to a requirement that resource protection be performed on transmissions between several stations during a scheduled time period (e.g., an r-TWT SP period) of BSS1, stations involved in the transmission within BSS1, such as AP1 and / or non-AP stations (e.g., STA11, STA12) associated with AP1, intercept and acquire, in real time, PPDU transmission information of PPDUs that may interfere with their own transmissions, such as intra-BSS point-to-peer (P2P) or uplink / downlink PPDU transmission information, or PPDU transmission information of PPDUs from BSSs, and PPDU-related information that cannot be determined as a received intra-BSS PPDU, before or during the scheduled time period for which resource protection is required. Specifically, the following is performed.

[0111] 1) For uplink or downlink transmissions that need to be protected, when AP1 and STA11 eavesdrop on the network within a specific time period (e.g., the r-TWT SP period used by STA11 for uplink and downlink transmissions) and receive an OBSS PPDU that cannot be determined as an inter-BSS PPDU or another intra-BSS PPDU, they record the OBSS transmission specific information carried by the PPDU (i.e., PPDU transmission information of the PPDU from the OBSS), and optionally include BSS identification information (e.g., BSSID, BSS Color, etc.) in which the sender is located, sender identification information (e.g., sender AID, sender partial AID, sender MAC address, etc.), receiver identification information (e.g., receiver AID, receiver partial AID, receiver MAC address, etc.), uplink or downlink flag information, whether it is a P2P transmission, etc. Here, STA 11 performs statistics or processing on the OBSS transmission specific information corresponding to the OBSS PPDU received within a specific time period, and then reports the results in real time or periodically to the associated AP 1. At the same time, AP 1 performs statistics or processing on the OBSS transmission specific information corresponding to the OBSS PPDU received within the specific time period.

[0112] 2) For point-to-point (Peer-to-Peer) transmissions that need to be protected, STA11 and STA12 associated with the transmission eavesdrop on the network within a specific time period, and if they receive an OBSS PPDU that cannot be determined as an inter-BSS PPDU or another intra-BSS PPDU, they record the OBSS transmission specific information carried by the PPDU. Here, STA11 and STA12 perform statistics or processing on the OBSS transmission specific information corresponding to the OBSS PPDU received within the specific time period, and then report it to the associated AP1 in real time or periodically.

[0113] Here, the first STA device may report the first interception or reception status information to the first AP device via a report message frame.

[0114] For example, the report message frame for reporting the first intercepted or received status information includes PPDU transmission information carried by the PPDU intercepted or received by the first STA device.

[0115] In some embodiments, the above-mentioned report message frame includes a PPDU transmission information element, and the PPDU transmission information element includes a PPDU transmission information control field and a PPDU transmission information field.

[0116] The PPDU transmission control information field is used to indicate the information format of the PPDU transmission information field, for example, the PPDU transmission control information field may indicate what information is in the following PPDU transmission information field and whether the corresponding PPDU is a PPDU transmitted by a station in an OBSS.

[0117] The PPDU transmission information field is used to carry the PPDU transmission information.

[0118] In some embodiments, the PPDU transmission control information field is: PPDU type indication information used to indicate whether the intercepted or received PPDU is from a BSS other than the first BSS; The number of PPDU transmission information, and a bitmap of the PPDU transmission information used to indicate the information type of the transmission sub-information included in the PPDU transmission information.

[0119] In some embodiments, each bit position in the bitmap of the PPDU transmission information corresponds to one type of transmission sub-information, and the bit value of each bit position in the bitmap of the PPDU transmission information is used to indicate whether the corresponding transmission sub-information is present in the PPDU transmission information field.

[0120] In this embodiment, the PPDU transmission information element is used to indicate the associated PPDU transmission information of the PPDU intercepted or received by the station, for example, to indicate the associated PPDU transmission information of the OBSS PPDU or Intra-BSS PPDU intercepted or received by the station, and the format definition of the PPDU transmission information element may be shown in Table 1 below. [Table 1]

[0121] The format of the PPDU transmission information control field in Table 1 above may be shown in Table 2 below. [Table 2]

[0122] In Table 2 above, the OBSS / Intra-BSS PPDU subfield indicates whether the PPDU is an OBSS PPDU or an Intra-BSS PPDU; for example, if it is set to 1, it indicates an OBSS PPDU, and if it is set to 0, it indicates an Intra-BSS PPDU.

[0123] The PPDU transmission information number subfield may indicate the number of PPDU transmission information that the PPDU transmission information field carries.

[0124] Alternatively, the format definition of the PPDU transmission information indication bitmap subfield may be as shown in Table 3. [Table 3]

[0125] The format definition of the PPDU transmission information field in Table 1 above may be shown in Table 4 below, and may carry zero or more PPDU transmission information. [Table 4]

[0126] The definition of the format of the PPDU transmission information in Table 4 above may be shown in Table 5 below. [Table 5]

[0127] In some embodiments, the meaning of each subfield in Table 5 above may be as follows:

[0128] Whether it is an uplink / downlink / P2P transmission flag subfield: if the value is "01", it is an uplink transmission, i.e., the PPDU transmission is from a non-AP STA to an AP; if the value is "10", it is a downlink transmission, i.e., the PPDU transmission is from an AP to a non-AP STA; if the value is "11", it is a P2P transmission, i.e., the PPDU transmission is from a non-AP STA to another non-AP STA; and if the value is "00", it is reserved.

[0129] BSS Color subfield: Indicates the Color of the BSS in which the PPDU sender is located.

[0130] Sender Partial AID subfield: Indicates the partial AID of the PPDU sender.

[0131] Sender AID subfield: Indicates the AID of the PPDU sender.

[0132] Sender MAC Address subfield: Indicates the sender's MAC address.

[0133] Receiver Partial AID subfield: Indicates the partial AID of the PPDU receiver.

[0134] Receiver AID subfield: Indicates the AID of the PPDU receiver.

[0135] Receiver MAC Address subfield: Indicates the receiver MAC address.

[0136] In some embodiments, the reporting message frame for reporting the first intercepted or reception status information is a radio measurement report frame.

[0137] In some embodiments, the step of reporting the first intercepted or reception status information to the first AP device in the first BSS includes: The method includes reporting first intercepted or received status information to the first AP device when the radio measurement request frame is received and the measurement type corresponding to the radio measurement request frame includes the designated measurement type.

[0138] In some embodiments, the designated measurement type includes a frame measurement type.

[0139] For reporting the specific type of PPDU transmission information that the station has overheard or received, the station may adopt the measurement request and measurement report mechanism defined in the IEEE 802.11 specification, and at the same time, add the content of the measurement request type to the measurement request frame (i.e., add the request type of PPDU transmission information, or add the PPDU transmission information to the existing specific request type), and add the PPDU transmission information element corresponding to the content of the new measurement type to the measurement report frame, thereby realizing the station's reporting of the specific type of PPDU transmission information that it has overheard or received.

[0140] A measurement initiator station transmits radio measurement request frames including a measurement request element and carrying a PPDU transmission information request type. In particular, the measurement type "Frame" may be selected in the measurement request element. Then, after a measurement responder station receives the radio measurement request frame, it feeds back radio measurement report frames. Here, the radio measurement report frame carries a measurement report element. A station performing radio measurements may report a specific type of PPDU transmission information that has been intercepted or received by carrying a PPDU transmission information element in the measurement report element. In particular, the measurement report field of a measurement report element whose measurement type is "Frame" may include a PPDU transmission information subelement, the format of which may be shown in Tables 6 and 7 below. For the subelement carried by the measurement report field of a frame report, a PPDU transmission information subelement is newly defined, the format of which may be shown in Table 8. Here, for the definitions of the PPDU transmission information control field and the PPDU transmission information field, reference may be made to the definitions in Tables 2, 4, and 5 above. [Table 6] [Table 7]

[0141] Table 7 above shows the format of the selectable subelement fields in Table 6. [Table 8]

[0142] Table 8 above shows another format of the PPDU transmission information element.

[0143] Step 703: The first AP device eavesdrops or receives data units on the second BSS channel to obtain second eavesdropping or reception status information.

[0144] Here, the second intercept or reception status information is used to indicate transmission information of a second target station in a second BSS that is intercepted or received by the first AP device, and the second target station is a station whose initiated transmission affects or interferes with frame exchange in the first BSS of the first AP device.

[0145] Alternatively, the second intercepted or received status information is used to indicate a second target station whose transmission originating in the second BSS and intercepted or received by the first AP device affects or interferes with the first AP device.

[0146] Here, the second intercepted or received status information includes PPDU transmission information carried by the PPDU intercepted or received by the first AP device.

[0147] Here, the process of the first AP device eavesdropping or receiving data units on the second BSS channel and obtaining second eavesdropping or receiving status information is the same as the process in step 701 above, and is not repeated here.

[0148] Step 704: The first AP device shares information about the target resource and / or the target station with the second AP device in the second BSS according to the overhearing or reception status information, and in response, the second AP device receives the information about the target resource and / or the target station.

[0149] Here, the target resource information and / or target station information is used by the second AP device to restrict transmission on the target channel and / or target time of the station in the second BSS, and the target channel and / or target time are the channel and / or time at which media access protection in the first BSS is required.

[0150] Here, the above interception or reception status information may include first interception or reception status information reported by the above first STA device and / or second interception or reception status information obtained by the first AP device intercepting or receiving the data unit.

[0151] In some embodiments, an access point (AP) within a BSS that needs to be protected (i.e., the first AP, AP1 described above) shares with a nearby AP (i.e., a second AP, AP2 corresponding to the OBSS) information about a scheduled time period during which radio resource protection is required, channel information, and information about stations associated with the OBSS that need to have channel access and transmission restrictions. Here, the information about stations associated with the OBSS that need to have channel access and transmission restrictions to protect the radio resources may be OBSS transmission specific information (i.e., the PPDU transmission information described above) that transmission-related stations that need to have resource protection (i.e., AP1 itself, STA11, and / or STA12) have overheard or received within a specific time period.

[0152] Here, when the first AP device shares information about the target resource and / or the target station with the second AP device, the first AP device may directly transmit the information about the target resource and / or the target station to the second AP device, or may indirectly transmit the information about the target resource and / or the target station to the second device via stations in the first BSS and the second BSS.

[0153] In response, the second AP device receives the target resource information and / or target station information directly transmitted by the first AP device, or receives the target resource information and / or target station information indirectly transferred by the first AP device via non-AP stations in the first BSS and the second BSS.

[0154] Step 705: The second AP device restricts transmission on a target channel and / or a target time of the station in the second BSS according to the information of the target resource and / or the information of the target station, where the target channel and / or the target time are the channel and / or the time at which media access protection in the first BSS is required.

[0155] In some embodiments, the target resource information includes target channel information and / or target time information.

[0156] In some embodiments, the target channel is all or some of the channels used by stations in the first BSS that overhear or receive the transmission from the second BSS.

[0157] For example, if the above target station includes a first target station intercepted or received by a first STA device, the above target channel may include all or some of the first BSS channels used by the first STA device (e.g., some of the first BSS channels from which the PPDU corresponding to the first target station was intercepted).

[0158] In some embodiments, the target channel is an operating channel on a link corresponding to the r-TWT operation established in the first BSS.

[0159] Here, the PPDU corresponding to the first target station may be a PPDU transmitted by the first target station or a PPDU transmitted to the first target station.

[0160] In some embodiments, the target time is the time at which stations in the first BSS that overhear or receive a transmission from the second BSS will contend for the channel and / or transmit.

[0161] In some embodiments, the target time information may include: The information includes information about a time period corresponding to a limited target wake-up time r-TWT service period of a station in the first BSS that overhears or receives transmission information from the second BSS.

[0162] In some embodiments, the time information of the first channel resource comprises: The information includes information about a time period that overlaps with the r-TWT service period of a station in the first BSS that overhears or receives transmission information from the second BSS.

[0163] In some embodiments, an AP (e.g., AP2) corresponding to the OBSS of the first BSS (i.e., the above-mentioned second BSS) may, after receiving information shared by AP1 (i.e., the above-mentioned first AP device) about the scheduled time period during which radio resource protection is required and information about stations associated with the OBSS for which channel access and transmission restrictions are required, restrict the channel access and transmission of stations associated with the OBSS (i.e., AP2 and / or stations associated with AP2) before the start of the scheduled time period and during the scheduled time period, ensure that the stations associated with the OBSS do not interfere with or reduce interference to frame transmissions between stations associated with the protected BSS transmissions (e.g., AP1, STA11, STA12) during the scheduled time period.

[0164] In some embodiments, when the second AP device constrains transmission on the target channel and / or target time of a station in the second BSS in accordance with the target resource information and / or target station information, it may also constrain transmission on the target channel and / or target time of all stations in the second BSS in accordance with the target resource information and / or target station information.

[0165] Here, when the second AP device restricts transmission on the target channel and / or target time of stations in the second BSS, it may not distinguish between stations in the second BSS and may directly control all stations in the second BSS to restrict transmission on the target channel and / or target time.

[0166] In some embodiments, the step of constraining transmissions at the target time of stations in the second BSS includes: controlling all stations in the second BSS to terminate the transmission opportunity before a start time corresponding to the target time; or controlling all stations in the second BSS to be in a silent state during a time period corresponding to the target time; or allowing all stations in the second BSS to contend for TXOPs using the first EDCA parameter set during a time period corresponding to the target time; or Controlling all stations in the second BSS to end the transmission opportunity before a start time corresponding to the target time, so that all stations in the second BSS are in a silent state during a time period corresponding to the target time; or and controlling all stations in the second BSS to end the transmission opportunity before a start time corresponding to the target time, thereby allowing all stations in the second BSS to contend for the TXOP using a first Enhanced Distributed Channel Access (EDCA) parameter set during a time period corresponding to the target time.

[0167] Here, the priority of the first EDCA parameter set is lower than the priority corresponding to the second EDCA parameter set used by a station in the first BSS that overhears or receives transmission information from the second BSS, or is lower than the priority corresponding to the common EDCA parameter set.

[0168] Here, the common EDCA parameter set may be a multi-user (MU) EDCA parameter set.

[0169] For example, if the above target resource information and / or target station information includes target time information, the second AP (e.g., the above AP2) may adopt at least one of the following channel access rules when restricting channel access and transmission of all stations in the OBSS before the start of and during the scheduled time period in which radio resource protection is required:

[0170] 1) All stations in the OBSS terminate their TXOP early before the start of the scheduled time period during which they need to protect the radio resources.

[0171] 2) All stations in the OBSS are silent during scheduled time periods when radio resource protection is required.

[0172] 3) All stations in the OBSS may contend for the channel to obtain TXOP during the scheduled time period when radio resource protection is required, but they adopt an EDCA parameter set with a lower contention priority than the BSS stations.

[0173] Here, the above rules 1) and 2) may be used in combination, and the above rules 1) and 3) may also be used in combination.

[0174] In some embodiments, the step of constraining transmissions on the target channel and target time of stations in the second BSS includes: controlling all stations in the second BSS to terminate their transmission opportunities on the target channel before a start time corresponding to the target time; or controlling all stations in the second BSS to be silent on the target channel during a time period corresponding to the target time; or allowing all stations in the second BSS to contend for TXOPs on the target channel using the first EDCA parameter set during a time period corresponding to the target time; or Controlling all stations in the second BSS to end the transmission opportunity on the target channel before a start time corresponding to the target time, and controlling all stations in the second BSS to be silent on the target channel during a time period corresponding to the target time; or The method includes controlling all stations in the second BSS to end a transmission opportunity on the target channel before a start time corresponding to the target time, and allowing all stations in the second BSS to use the first EDCA parameter set and contend for a TXOP on the target channel during a time period corresponding to the target time.

[0175] In the above embodiment, if the target resource information and / or target station information includes target time information, the second AP (e.g., the above AP2) restricts channel access and transmission on the target channel of all stations in the OBSS before the start of the scheduled time period during which radio resource protection is required and during the scheduled time period. In this solution, the second AP does not need to restrict channel access and transmission on channels other than the target channel of stations in the OBSS, thereby reducing the impact on transmission between stations in the OBSS.

[0176] In some embodiments, the step of restricting transmission on the target channel of stations in the second BSS includes: controlling all stations in the second BSS to be silent on the target channel; or Allowing all stations in the second BSS to contend for a TXOP on the target channel using the first EDCA parameter set.

[0177] In some embodiments, when the target resource information and / or the target station information further includes station information of the target station, the step of constraining transmission on the target channel and / or the target time of the station in the second BSS in response to the target resource information and / or the target station information includes: The method includes restricting transmission of the target station on the target channel and / or the target time in response to the target resource information and / or the target station information.

[0178] Here, when the second AP device restricts transmission of a station in the second BSS on a target channel and / or target time, it may also restrict transmission of a target station in the second BSS that is overheard by a station in the first BSS as having influence or interference, i.e., it may control the target station in the second BSS to restrict transmission on a target channel and / or target time.

[0179] In some embodiments, when the information about the target resource and / or the information about the target station further includes station information about the target station, the step of restricting transmission of the target station at the target time includes: controlling the target station to terminate the transmission opportunity before a start time corresponding to the target time; or controlling the target station to be in a silent state during a time period corresponding to the target time; or allowing the target station to contend for the TXOP using the first EDCA parameter set during a time period corresponding to the target time; or Controlling the target station to end the transmission opportunity before the start time corresponding to the target time, so that the target station is in a silent state during the time period corresponding to the target time; or The step of controlling the target station to terminate the transmission opportunity before a start time corresponding to the target time, and allowing the target station to contend for the TXOP using the first EDCA parameter set during the time period corresponding to the target time, is included.

[0180] For example, if the target resource information and / or target station information includes target time information, channel access and transmission of stations related to OBSS transmission links that interfere with the first BSS transmission may be restricted before the start of and during the scheduled time period in which radio resource protection is required. For example, the OBSS transmission links that interfere with the first BSS transmission include a link between stations STA21 and STA22 (both STA21 and STA22 are stations in the OBSS, and may be access point stations or non-access point stations), and employ at least one of the following channel access rules:

[0181] 1) Stations STA21 and STA22 terminate their TXOPs early, before the start of the scheduled time period during which radio resource protection is required.

[0182] 2) Stations STA21 and STA22 are in a silent state during a scheduled time period when radio resource protection is required.

[0183] 3) All stations in the OBSS may contend for the channel to obtain TXOP during the scheduled time period when radio resource protection is required, but they adopt an EDCA parameter set with a lower contention priority than the BSS stations.

[0184] 4) No channel access or transmission restrictions are imposed on stations in the OBSS related to OBSS transmission links that do not interfere with BSS transmissions other than STA21 and STA22.

[0185] Here, the above rules 1) and 2) may be used in combination, and the above rules 1) and 3) may also be used in combination. Any of the above rules 1) to 3) may be used in combination with rule 4).

[0186] In some embodiments, when the information about the target resource and / or the information about the target station further includes station information about the target station, the step of restricting transmission on the target channel and the target time of the target station includes: controlling the target station to terminate a transmission opportunity on the target channel before a start time corresponding to the target time; or controlling the target station to be silent on the target channel during a time period corresponding to the target time; or allowing the target station to contend for a TXOP on the target channel using the first EDCA parameter set during a time period corresponding to the target time; or Controlling the target station to terminate a transmission opportunity on the target channel before a start time corresponding to the target time, and controlling the target station to be silent on the target channel during a time period corresponding to the target time; or The method includes controlling the target station to terminate a transmission opportunity on the target channel before a start time corresponding to the target time, and allowing the target station to contend for a TXOP on the target channel using the first EDCA parameter set during a time period corresponding to the target time.

[0187] In the above embodiment, if the target resource information and / or the target station information includes target time information, the second AP (e.g., the above AP2) restricts channel access and transmission on the target channel of the target station in the OBSS before the start of the scheduled time period during which radio resource protection is required and during the scheduled time period. In this solution, the second AP does not need to restrict channel access and transmission on channels other than the target channel of the target station in the OBSS, thereby reducing the impact on transmission between stations in the OBSS.

[0188] In some embodiments, the step of restricting transmission on the target channel of the target station in the second BSS includes: controlling a target station in the second BSS to be silent on the target channel; or Allowing the target station in the second BSS to contend for a TXOP on the target channel using the first EDCA parameter set.

[0189] In some embodiments, the step of restricting transmission on the target channel and / or the target time of the target station in response to the target resource information and / or the target station information comprises: The method includes restricting transmission of the target station on the target channel and / or the target time based on the transmission role of the target station in response to the information of the target resource and / or the information of the target station.

[0190] Here, the transmission role is used to indicate that the target station is a transmission sender or receiver in a transmission from a second BSS that is overheard or received by a station in a first BSS.

[0191] In the above embodiment, the second AP may further impose differential transmission restrictions on target stations depending on the transmission role of the target station in the second BSS during influence or interference from the second BSS that is overheard or received by a station in the first BSS.

[0192] In some embodiments, if the target station is a transmission sender, the step of constraining the target station from transmitting at the target time comprises: controlling the target station to terminate the transmission opportunity before a start time corresponding to the target time; or controlling the target station not to initiate a TXOP contention during a time period corresponding to the target time; or allowing the target station to contend for the TXOP using the first EDCA parameter set during a time period corresponding to the target time; or Controlling the target station to terminate the transmission opportunity before the start time corresponding to the target time, so that the target station does not initiate a TXOP contention during the time period corresponding to the target time; or The step of controlling the target station to terminate the transmission opportunity before a start time corresponding to the target time, and allowing the target station to contend for the TXOP using the first EDCA parameter set during the time period corresponding to the target time, is included.

[0193] In some embodiments, if the target station is a transmission sender, the step of constraining the target station from transmitting on the target channel and target time comprises: controlling the target station to terminate a transmission opportunity on the target channel before a start time corresponding to the target time; or controlling the target station not to initiate TXOP contention on the target channel during a time period corresponding to the target time; or allowing the target station to contend for a TXOP on the target channel using the first EDCA parameter set during a time period corresponding to the target time; or Controlling the target station to terminate a transmission opportunity on the target channel before a start time corresponding to the target time, and controlling the target station not to initiate a TXOP contention on the target channel during a time period corresponding to the target time; or The method includes controlling the target station to terminate a transmission opportunity on the target channel before a start time corresponding to the target time, and allowing the target station to contend for a TXOP on the target channel using the first EDCA parameter set during a time period corresponding to the target time.

[0194] In some embodiments, the step of restricting transmission on the target channel of the target station in the second BSS when the target station is a transmission source includes: controlling a target station in the second BSS to be silent on the target channel; or Allowing the target station in the second BSS to contend for a TXOP on the target channel using the first EDCA parameter set.

[0195] In some embodiments, if the target station is a transmission recipient, the step of constraining the target station from transmitting on the target channel and / or the target time comprises: the target station initiating transmission on the target channel and / or the target time and permitting the second STA device to transmit a designated type frame; And / or includes a step of prohibiting the target station from transmitting any frame other than a designated type frame to the second STA device on the target channel and / or at the target time, the second STA device being a station transmitting to the target station in transmission information from the second BSS that a station in the first BSS has overheard or received, wherein the length of the response frame of the designated type frame is less than or equal to a frame length threshold.

[0196] In the above embodiment, when the target station is the transmission receiver, the target station may be allowed to initiate transmission on the target channel and / or target time and transmit a relatively short response frame information frame that needs to be fed back to the second STA device, and / or the target station may be prohibited from transmitting a relatively long response frame information frame that needs to be fed back to the second STA device, but may be allowed to transmit a relatively short response frame (e.g., a confirmation frame) information frame that needs to be fed back to the second STA device, thereby controlling the length of the frame that the second STA device transmits to the target station and achieving the purpose of influencing or interfering with stations in the first BSS when the second STA device transmits a PPDU to the target station.

[0197] In the above embodiment, for OBSS transmission links that may interfere with BSS transmission before the start of a scheduled time period when radio resource protection is required and during the scheduled time period, channel access and transmission of stations associated with the OBSS transmission links may be differentially restricted depending on whether the station associated with the OBSS transmission link is a transmitter or a receiver. For example, if the transmitter station of an OBSS transmission link that may interfere with BSS transmission is STA21 and the receiver station is STA22 (both STA21 and STA22 are stations in the OBSS, and may be access point stations or non-access point stations), at least one of the following channel access rules is adopted for the transmitter station STA21:

[0198] 1) STA 21 terminates its TXOP early, before the start of the scheduled time period during which radio resource protection is required.

[0199] 2) STA 21 initiates transmission without contending for the channel during a scheduled time period when radio resource protection is required.

[0200] 3) During the scheduled time period when radio resource protection is required, STA 21 may obtain a TXOP by contending for the channel, but employs an EDCA parameter set with a relatively low contention priority.

[0201] For STA22, transmitting a PPDU to STA21 does not interfere with the BSS transmission link, so STA22 may be allowed to obtain a TXOP by contending for the channel during a scheduled time period during which radio resource protection is performed and initiate a transmission, but during the TXOP period for initiating a transmission, the length of the PPDU transmitted by STA21 to STA22 is controlled within a predetermined threshold range, and, for example, only an acknowledgement frame is transmitted.

[0202] In some embodiments, when the second AP restricts transmission on a target channel and / or target time of a station in the second BSS in accordance with information on the target resource and / or information on the target station, the second AP may send a channel resource protection on notification frame to a third STA device in the second BSS in accordance with information on the target resource and / or information on the target station, and the channel resource protection on notification frame is used to instruct the third STA device to restrict transmission on the target channel and / or target time.

[0203] In some embodiments, the channel resource protection on notification frame includes a periodic element that is to be protected.

[0204] The protected period elements include a protected period control field, a protected period count field, a protected period field, a protected period duration field, and a protected period offset field.

[0205] Here, the protected period control field is used to indicate a method for restricting transmission corresponding to time information.

[0206] The Protected Period Count field is used to indicate the number of TBTTs that will arrive in the beacon interval in which the start time of the next time period falls.

[0207] The protected period field is used to indicate the number of beacon intervals between the start times of the time periods.

[0208] The protected period duration field is used to indicate the duration of the time period.

[0209] The Protected Period Offset field is used to indicate an offset value from the start of the time period to the TBTT defined by the Protected Period Count field.

[0210] In some embodiments, the protected period control field includes a resource protection scheme indication bitmap.

[0211] Each bit position in the resource protection scheme indication bitmap corresponds to one resource protection scheme, and the bit value of each bit position in the resource protection scheme indication bitmap is used to indicate whether the corresponding resource protection scheme is on or not.

[0212] In some embodiments, a channel resource protection operation notification frame is transmitted to a third STA device, and the channel resource protection operation notification frame is used to instruct the third STA device to terminate or resume transmission restrictions on the target channel and / or target time.

[0213] In some embodiments, the channel resource protection operation notification frame includes an indication flag.

[0214] The indication flag is used to indicate the termination or resumption of the restriction on transmission on the target channel and / or the target time.

[0215] In the above embodiment, the protected period element may be used to indicate the protected period information and the channel resource protection scheme or measure adopted during the protected period, and its format definition may be shown in Table 9 below. [Table 9]

[0216] The format of the Protected Period Control field in Table 9 above may be shown in Table 10 below. [Table 10]

[0217] For example, if the target resource information and / or the target station information includes target time information, the definition of the resource protection scheme indication bitmap subfield in Table 10 above may be shown in Table 11. [Table 11]

[0218] The definitions of the other fields in Table 9 above may be as follows:

[0219] Protected Period Count field: Set to the number of target beacon transmission times (TBTT) that will be reached in the beacon interval in which the start time of the next protected period falls; a value of 0 indicates a reservation.

[0220] Protected Periods field: Set to the number of beacon intervals between the start times of the scheduled protected periods defined in this element; a value of 0 represents an undefined protected period.

[0221] Protected Cycle Duration field: Set to the duration of the protected cycle, expressed in Time Units (TU).

[0222] Protected Cycle Offset field: Set to the offset value from the start time of the protected cycle to the TBTT defined by the Protected Cycle Count field.

[0223] In the above embodiment, the channel resource protection notification frame is used by the initiator to instruct the responder to initiate the protected periodicity information and / or the adopted channel resource protection method or action. The format of the action field of this frame is shown in Table 12. [Table 12]

[0224] The Category field in Table 12 above is defined as specified in the IEEE 802.11 specification.

[0225] The protected behavior fields in Table 12 above are defined as specified in the IEEE 802.11 specification.

[0226] The Dialog Token field in Table 12 above is set to a non-zero value by the initiator and set by the responder to a copy of the corresponding value in the received channel resource protection notification frame, where a matching value of the Dialog Token in an action initiated by the sender and the value in the action frame sent by the responder indicates that they belong to the same action event.

[0227] The Protected Action Identifier field in Table 12 above is used to uniquely identify the channel resource protection action event indicated by this frame. The protected periodic element fields are shown in the definitions in Tables 9 through 11 above.

[0228] The channel resource protection operation notification frame in the above embodiment is used to close or resume a previously initiated channel resource protection action event. The format of the action field of the frame may be as shown in Table 13. [Table 13]

[0229] The Category field in Table 13 above is defined as specified in the IEEE 802.11 specification.

[0230] The protected behavior fields in Table 13 above are defined as specified in the IEEE 802.11 specification.

[0231] The Dialog Token field in Table 13 above is set to a non-zero value by the initiator and set by the responder to a copy of the corresponding value in the received Channel Resource Protection Operation Notification frame.

[0232] The protected action identifier field in Table 13 above is used to indicate the channel resource protection action event corresponding to the operation.

[0233] The close or not indicator flag field in Table 13 above is used to indicate whether to close or resume the channel resource protection action event indicated by the protected action identifier field.

[0234] Here, the above-mentioned channel resource protection on notification frame is generally transmitted by an AP and may be a broadcast / multicast frame or a unicast frame. If the channel resource protection on notification frame is a broadcast frame, it notifies non-AP STAs associated with the AP to turn on associated channel resource protection. If the channel resource protection notification frame is a multicast frame, it notifies non-AP STAs (identified by destination multicast receiving address) belonging to an indicated multicast group associated with the AP to turn on associated channel resource protection. If the channel resource protection notification frame is a unicast frame, it notifies specific non-AP STAs (identified by destination receiving address) associated with the AP to turn on associated channel resource protection.

[0235] The channel resource protection operation notification frame is generally transmitted by an AP and may be a broadcast / multicast frame or a unicast frame. If the channel resource protection operation notification frame is a broadcast frame, it notifies non-AP STAs associated with the AP to perform the associated channel resource protection operation. If the channel resource protection operation notification frame is a multicast frame, it notifies non-AP STAs (identified by destination multicast receiving address) belonging to a designated multicast group associated with the AP to perform the associated channel resource protection operation. If the channel resource protection operation notification frame is a unicast frame, it notifies specific non-AP STAs (identified by destination receiving address) associated with the AP to perform the associated channel resource protection operation.

[0236] In response to this, on the third STA device side, the third STA device receives a channel resource protection on notification frame transmitted by the second AP device in the second BSS, the channel resource protection on notification frame being transmitted after the second AP device receives the target resource information and / or target station information transmitted by the first AP device in the first BSS, the target resource information and / or target station information being shared by the first AP device according to the interception or reception status information, the interception or reception status information being used to indicate the transmission information of the target station in the second BSS intercepted or received by the station in the first BSS, the target station being a station whose initiated transmission affects or interferes with the frame exchange in the first BSS of the station in the first BSS, and in response to the channel resource protection on notification frame, restricts the transmission on the target channel and / or target time of the third STA device, the target channel and / or target time being the channel and / or time at which media access protection in the first BSS needs to be performed.

[0237] In some embodiments, the step of the third STA device constraining transmission at the target time of the third STA device comprises: terminating the TXOP before the start point corresponding to the target time, or controlling all stations in the second BSS to be in a silent state during a time period corresponding to the target time; or not initiating a TXOP competition during the time period corresponding to the target time; or contending for the TXOP using the first EDCA parameter set during a time period corresponding to the target time; or terminating the TXOP before the start time corresponding to the target time and going silent during the time period corresponding to the target time; or Terminating the TXOP before the start time corresponding to the target time, and not initiating a TXOP competition during the time period corresponding to the target time; or terminating the TXOP before a start time corresponding to the target time and allowing the TXOP to contend using the first EDCA parameter set during the time period corresponding to the target time; or The method includes a step of initiating transmission on a target channel and / or a target time and allowing the second STA device to transmit a designated type frame, and / or a step of prohibiting the second STA device from transmitting frames other than the designated type frame.

[0238] In some embodiments, the step of the third STA device constraining transmission on the target channel and target time of the third STA device comprises: terminating a TXOP on the target channel before a start point corresponding to the target time; or controlling all stations in the second BSS to be silent on the target channel during a time period corresponding to the target time; or not initiating a TXOP contention on the target channel during a time period corresponding to the target time; or contending for a TXOP on the target channel using the first EDCA parameter set during a time period corresponding to the target time; or terminating a TXOP on the target channel before a start time corresponding to the target time and going silent on the target channel during a time period corresponding to the target time; or terminating a TXOP on the target channel before a start time corresponding to the target time, and not initiating a TXOP contention on the target channel during a time period corresponding to the target time; or terminating a TXOP on the target channel before a start time corresponding to the target time, and allowing a TXOP to contend on the target channel using the first EDCA parameter set during a time period corresponding to the target time; or The method includes a step of initiating transmission on the target channel and / or target time and allowing the second STA device to transmit a designated type frame, and / or a step of prohibiting the second STA device from transmitting any frame other than the designated type frame on the target channel and / or target time.

[0239] In the following, the proposal according to the present application will be illustrated by taking different scenarios as examples.

[0240] Scenario 1 Referring to Fig. 8, Fig. 8 is a schematic diagram of a transmission scenario according to an embodiment of the present application. As shown in Fig. 8, there are two BSSs in a Wi-Fi system, one is a BSS operated by AP1 and its associated station STA1, and the other is an OBSS operated by AP2 and its associated station STA2 and corresponding to the BSS. To address the OBSS interference problem, the above solution of the present application provides resource protection for transmission between specific stations during a scheduled time period (i.e., a protected period) of the BSS.

[0241] Specifically, stations involved in BSS transmission that need to perform radio resource protection during a scheduled time period (e.g., AP1 and STA1 in FIG. 8) obtain transmission-specific information of the OBSS (i.e., PPDU transmission information corresponding to PPDUs transmitted by stations in the OBSS) by overhearing or receiving the OBSS PPDU. STA1 then feeds back the obtained information to AP1 via a radio measurement report frame by reporting the specific type of PPDU transmission information it has overheard or received. AP1 then shares with AP2 information about the scheduled time period that requires radio resource protection (e.g., r-TWT SP information corresponding to STA1) and station information about stations involved in the OBSS that need to perform channel access and transmission restrictions for radio resource protection (e.g., station information about OBSS transmissions fed back by STA1 and / or AP1). After receiving the above information, AP2 restricts channel access and transmission of stations involved in the OBSS (i.e., associated stations associated with AP2, e.g., STA2) during the scheduled time period by transmitting a channel resource protection on notification frame and / or a channel resource protection operation notification frame. Specifically, the process is as follows.

[0242] As shown in FIG. 10, if the sender information of the OBSS PPDU received by STA1 includes identification information of AP2 (e.g., partial AID, AID, or MAC address of AP2), and / or the receiver information of the OBSS PPDU received by STA1 includes identification information associated with the station of AP2 (set to STA2) (e.g., partial AID, AID, or MAC address of STA2), and the sender information of the OBSS PPDU does not include identification information of STA2 (associated with AP2), AP2 will adopt at least one of the following channel access rules:

[0243] 1) AP2 terminates its TXOP early, before the start of the protected period (eg, r-TWT service period).

[0244] 2) AP2 initiates transmission during the protected period without contending for the channel.

[0245] 3) AP2 may obtain TXOP by contending for the channel during the protected period, but adopts an EDCA parameter set with a relatively low contention priority.

[0246] STA2 also employs at least one of the following channel access rules:

[0247] 1) During the period in which STA2 is protected, STA2 is allowed to acquire a TXOP by competing for the channel and initiate an upstream transmission, and during the TXOP period in which the transmission is initiated, the length of the PPDU transmitted by the responder is ensured to be controlled within a predetermined threshold range.

[0248] Scenario 2 Referring to Fig. 9, Fig. 9 is a schematic diagram of a transmission scenario according to an embodiment of the present application. As shown in Fig. 9, there are two BSSs in a Wi-Fi system, one is a BSS operated by AP1 and its associated station STA1, and the other is an OBSS operated by AP2 and its associated station STA2. To address the OBSS interference problem, the above solution of the present application provides resource protection for transmissions between specific stations of a specific BSS during a scheduled time period (i.e., a protected period).

[0249] Specifically, stations involved in BSS transmission that need to perform radio resource protection during a scheduled time period (e.g., AP1 and STA1 in FIG. 9 ) obtain transmission-specific information for the OBSS by overhearing or receiving the OBSS PPDU. Here, STA1 feeds back the obtained PPDU transmission information to AP1 via a radio measurement report frame by reporting the overheared or received specific type of PPDU transmission information. AP1 shares with AP2 information about the scheduled time period that requires radio resource protection (e.g., r-TWT SP information corresponding to STA1) and stations involved in the OBSS that need to perform channel access and transmission restrictions for radio resource protection (e.g., station information about the OBSS transmissions fed back by STA1 and / or AP1). After receiving the information, AP2 restricts channel access and transmission of stations involved in the OBSS (i.e., associated stations related to AP2, e.g., STA2) during the scheduled time period by transmitting a channel resource protection on notification frame and / or a channel resource protection operation notification frame. Specifically, the process is as follows.

[0250] If the sender information of the OBSS PPDU received by STA1 includes the identification information of AP2, and / or the receiver information of the OBSS PPDU received by STA1 includes the identification information associated with the station of AP2 (set to STA2), and at the same time, the sender information of the OBSS PPDU received by STA1 also includes the identification information of STA2 (associated with AP2), then AP2 will adopt at least one of the following channel access rules:

[0251] 1) AP2 terminates its TXOP early, before the start of the protected period (eg, r-TWT service period).

[0252] 2) AP2 initiates transmission during the protected period without contending for the channel.

[0253] 3) AP2 obtains the TXOP by contending for the channel during the protected period, but employs EDCA parameters with a relatively low contention priority.

[0254] STA2 also employs at least one of the following channel access rules:

[0255] 1) STA2 terminates its TXOP before the start of the protected period (eg, r-TWT service period).

[0256] 2) STA2 initiates a transmission during the protected period without contending for the channel.

[0257] 3) STA2 contends for the channel during the protected period, but employs EDCA parameters with a relatively low contention priority.

[0258] Scenario 3 and Scenario 4 10 and 11, which are schematic diagrams of two transmission scenarios according to an embodiment of the present application. As shown in Fig. 10 and 11, there are two BSSs in a Wi-Fi system, one is a BSS operated by AP1 and its associated station STA1 or STA3, and the other is an OBSS operated by AP2 and its associated station STA2. To address the OBSS interference problem, the solution according to the present application provides resource protection for transmissions between specific stations of a specific BSS (i.e., the BSS operated by AP1 and its associated station STA1 or STA3) during a scheduled time period (i.e., a protected period).

[0259] Specifically, stations involved in BSS transmission that need to perform radio resource protection during a scheduled time period (e.g., AP1 and STA1 in FIGS. 10 and 11 ) obtain transmission-specific information for the OBSS by overhearing or receiving the OBSS PPDU. According to a reporting method for the overheared or received specific type of PPDU transmission information, STA1 feeds back the obtained PPDU transmission information to AP1 via a radio measurement report frame. AP1 shares with AP2 information about the scheduled time period that requires radio resource protection (e.g., r-TWT SP information corresponding to STA1) and station information about stations involved in the OBSS that need to perform channel access and transmission restrictions for radio resource protection (e.g., station information about the OBSS transmissions fed back by STA1 and / or AP1 in the figures). After receiving the above information, AP2 restricts channel access and transmission of stations involved in the OBSS (i.e., associated stations related to AP2, e.g., STA2) during the scheduled time period by transmitting a channel resource protection on notification frame and / or a channel resource protection operation notification frame. Specifically, the process is as follows:

[0260] In scenarios 3 and 4, if the sender identity of the OBSS PPDU received by STA1 does not include the identity of AP2 but includes the identity related to a station of AP2 (set to station STA2), STA2 will adopt at least one of the following channel access rules:

[0261] 1) STA2 terminates its TXOP early before the start of the protected period (r-TWT service period).

[0262] 2) STA2 initiates a transmission during the protected period without contending for the channel.

[0263] 3) STA2 contends for the channel during the protected period, but employs EDCA parameters with a relatively low contention priority.

[0264] AP2 also adopts at least one of the following channel access rules:

[0265] 1) If a TXOP that AP2 obtains before the start of the protected period initiates transmission with STA2, AP2 terminates the TXOP early before the start of the protected period.

[0266] 2) AP2 obtains a TXOP by contending for the channel during the protected period, but to obtain a TXOP, it initiates transmission only to its associated other station (set to STA3) other than STA2, and the sender identity information of the OBSS PPDU received by STA1 does not include the identity information of STA3.

[0267] 3) During the protected period, AP2 obtains a TXOP by contending for the channel. After obtaining the TXOP, when AP2 sends a trigger frame to trigger the uplink transmission of STA2, it ensures that the length of the uplink transmission of STA2 is less than or equal to a threshold. Here, if the trigger frame sent by AP2 is an MU-BAR or GCR MU-BAR trigger frame, the UL Length subfield in the common information field of the trigger frame corresponding to trigger the uplink transmission of STA2 is less than or equal to 418, or the UL Length subfield in the common information field of the trigger frame corresponding to trigger the uplink transmission of STA2 is less than or equal to 76.

[0268] Scenario 5 Referring to Fig. 12, Fig. 12 is a schematic diagram of a transmission scenario according to an embodiment of the present application. As shown in Fig. 12, there are two BSSs in a Wi-Fi system, one is a BSS operated by AP1 and its associated station STA1, and the other is an OBSS operated by AP2 and its associated station STA2. To address the OBSS interference problem, the solution according to the present application provides resource protection for transmissions between specific stations of a specific BSS (i.e., the BSS operated by AP1 and its associated station STA1) during a scheduled time period (i.e., a protected period).

[0269] Specifically, stations involved in BSS transmission that need to perform radio resource protection during a scheduled time period (e.g., AP1 and STA1 in FIG. 12) obtain transmission-specific information for the OBSS by overhearing or receiving the OBSS PPDU. According to a reporting method for the overheared or received specific type of PPDU transmission information, STA1 feeds back the obtained information to AP1 via a radio measurement report frame. AP1 shares with AP2 information about the scheduled time period that requires radio resource protection (e.g., r-TWT SP information corresponding to STA1) and station information about stations involved in the OBSS that need to perform channel access and transmission restrictions for radio resource protection (e.g., station information about the OBSS transmissions fed back by STA1 and / or AP1). After receiving the information, AP2 restricts channel access and transmission of stations involved in the OBSS (i.e., associated stations associated with AP2, e.g., STA2) during the scheduled time period by transmitting a channel resource protection on notification frame and / or a channel resource protection operation notification frame. Specifically, the process is as follows.

[0270] If the sender information of the OBSS PPDU received by STA1 includes the identification information of STA2 and / or the identification information of AP2, and the sender information of the OBSS PPDU received by AP1 includes the identification information of AP2 and / or the identification information of STA2, AP2 will adopt at least one of the following channel access rules:

[0271] 1) AP2 terminates its TXOP early before the start of the protected period (r-TWT service period).

[0272] 2) AP2 initiates transmission during the protected period without contending for the channel.

[0273] 3) AP2 may obtain TXOP by contending for the channel during the protected period, but adopts an EDCA parameter set with a relatively low contention priority.

[0274] STA2 adopts at least one of the following channel access rules:

[0275] 1) STA2 terminates its TXOP early, before the start of the protected period.

[0276] 2) STA2 initiates a transmission during the protected period without contending for the channel.

[0277] 3) STA2 may obtain TXOP by contending for the channel during the protected period, but employs an EDCA parameter set with a relatively low contention priority.

[0278] Scenario 6 and Scenario 7 13 and 14, which are schematic diagrams of two transmission scenarios according to an embodiment of the present application. As shown in Fig. 13 and 14, there are two BSSs in a Wi-Fi system, one is a BSS operated by AP1 and its associated station STA1, and the other is an OBSS operated by AP2 and its associated station STA2. To address the OBSS interference problem, the solution according to the present application provides resource protection for transmissions between specific stations of a specific BSS (i.e., the BSS operated by AP1 and its associated station STA1) during a scheduled time period (i.e., a protected period).

[0279] Specifically, stations involved in BSS transmission that need to perform radio resource protection during a scheduled time period (e.g., AP1 and STA1 in FIGS. 13 and 14 ) obtain transmission-specific information for the OBSS by overhearing or receiving the OBSS PPDU. According to a reporting method for the overheared or received specific type of PPDU transmission information, STA1 feeds back the obtained PPDU transmission information to AP1 via a radio measurement report frame. AP1 shares with AP2 information about the scheduled time period that requires radio resource protection (e.g., r-TWT SP information corresponding to STA1) and station information about stations involved in the OBSS that need to perform channel access and transmission restrictions for radio resource protection (e.g., station information about OBSS transmissions fed back by STA1 and / or AP1). After receiving the above information, AP2 restricts channel access and transmission of stations involved in the OBSS (i.e., associated stations related to AP2, e.g., STA2) during the scheduled time period by transmitting a channel resource protection on notification frame and / or a channel resource protection operation notification frame. Specifically, the process is as follows:

[0280] If the sender identification information of the OBSS PPDU received by STA1 includes the identification information of AP2 and / or the identification information of STA2, and the sender information of the OBSS PPDU received by AP1 includes the identification information of AP2 and / or the identification information of STA2, AP2 will adopt at least one of the following channel access rules:

[0281] 1) AP2 terminates its TXOP early before the start of the protected period (r-TWT service period).

[0282] 2) AP2 initiates transmission during the protected period without contending for the channel.

[0283] 3) AP2 may obtain TXOP by contending for the channel during the protected period, but adopts an EDCA parameter set with a relatively low contention priority.

[0284] For STA2, transmitting a PPDU to AP2 does not interfere with the link transmission between AP1 and STA1, so STA2 may be allowed to acquire a TXOP and initiate a transmission by competing for the channel during the protected period, and at the same time, the length of the PPDU that AP2 transmits to STA2 may be limited to be controlled within a predetermined threshold range, for example, used only for transmitting an acknowledgement frame.

[0285] Based on the above, in this embodiment of the present application, if a station in a first BSS overhears that a transmission initiated by a target station in a second BSS affects or interferes with the frame exchange of the station in the first BSS, the first AP device in the first BSS can share information about the target resource and / or the target station with the second AP device according to the corresponding overhearing or reception status information, and after receiving the information about the target resource and / or the target station, the second AP device can use a channel resource protection on notification frame to instruct the third STA device in the second BSS to restrict transmission on the target channel and / or target time, thereby reducing the impact or interference of the station in the second BSS on the station in the first BSS as much as possible and further reducing the transmission delay of the station in the first BSS.

[0286] Referring to Figure 15, Figure 15 is a block diagram of a transmission device according to an embodiment of the present application. The device has the functions of the steps performed by a first STA device in a first BSS in implementing the above transmission method, and the first STA device is a non-AP STA. As shown in Figure 15, the device: an intercepting module 1501 used for intercepting or receiving data units on a first BSS channel and obtaining first intercepting or receiving status information, the first intercepting or receiving status information being used to indicate transmission information of a first target station in a second BSS that is intercepted or received by the first STA device, the first target station being a station whose initiated transmission affects or interferes with frame exchange in the first BSS of the first STA device; and a reporting module 1502 adapted to report the first intercepted or received status information to a first AP device in the first BSS.

[0287] In some embodiments, the first intercepted or received status information is used by a first access point (AP) device in the first BSS to share target resource information and / or target station information with a second AP device in the second BSS, and the target resource information and / or target station information is used by the second AP device to restrict transmission on a target channel and / or target time of a station in the second BSS, the target channel and / or target time being a channel and / or time at which media access protection in the first BSS is required.

[0288] In some embodiments, the second BSS is a duplicate basic service set (OBSS) of the first BSS, or a BSS operating on the same channel.

[0289] In some embodiments, the first intercepted or reception status information includes station information for the first target station.

[0290] In some embodiments, the data unit comprises a physical layer protocol data unit (PPDU).

[0291] In some embodiments, the device further comprises a determination module used to determine that the station information carried by the first PPDU includes information of the first target station if BSS identification information included in the intercepted or received first PPDU is different from the BSS identification information of the first BSS.

[0292] In some embodiments, the BSS identification information includes at least one of a BSSID and a BSS color.

[0293] In some embodiments, the report message frame for reporting the first intercepted or received status information includes PPDU transmission information carried by the PPDU intercepted or received by the first STA device. The transmission sub-information includes at least one of a transmission type, a BSS color, a BSSID, a sender association identifier AID, a sender part AID, a sender MAC address, a receiver association identifier AID, a receiver part AID, and a receiver MAC address.

[0294] Here, the transmission type includes upstream transmission, downstream transmission, or point-to-point P2P transmission.

[0295] In some embodiments, the report message frame includes a PPDU transmission information element, and the PPDU transmission information element includes a PPDU transmission information control field and a PPDU transmission information field.

[0296] The PPDU transmission control information field is used to indicate the information format of the PPDU transmission information field.

[0297] The PPDU transmission information field is used to carry the PPDU transmission information.

[0298] In some embodiments, the PPDU transmission control information field comprises: PPDU type indication information used to indicate whether the intercepted or received PPDU is from a BSS other than the first BSS; The number of PPDU transmission information, and a bitmap of the PPDU transmission information used to indicate the information type of the transmission sub-information included in the PPDU transmission information.

[0299] In some embodiments, each bit position in the bitmap of the PPDU transmission information corresponds to one type of the transmission sub-information, and the bit value of each bit position in the bitmap of the PPDU transmission information is used to indicate whether the corresponding transmission sub-information is present in the PPDU transmission information field.

[0300] In some embodiments, the report message frame for reporting the first intercepted or reception status information is a radio measurement report frame.

[0301] In some embodiments, the reporting module 1502 is used to report the first interception or reception status information to the first AP device when a radio measurement request frame is received and the measurement type corresponding to the radio measurement request frame includes a specified measurement type.

[0302] In some embodiments, the designated measurement type includes a frame measurement type.

[0303] Referring to Figure 16, Figure 16 is a block diagram of a transmission device according to an embodiment of the present application. The device has the functions of the steps performed by the first STA device in the first BSS in implementing the above transmission method. As shown in Figure 16, the device includes: an information acquisition module 1601 used for acquiring intercepting or receiving status information, the intercepting or receiving status information being used for indicating transmission information of a target station in a second BSS that a station in a first BSS intercepts or receives on a first BSS channel, the target station being a station whose initiated transmission affects or interferes with frame exchange in the first BSS of the station in the first BSS; The present invention may further comprise a transmitting module 1602 used to share target resource information and / or target station information with a second AP device in the second BSS according to the intercepted or received status information, wherein the target resource information and / or target station information is used by the second AP device to restrict transmission on a target channel and / or target time of a station in the second BSS, and the target channel and / or target time are a channel and / or time at which media access protection in the first BSS needs to be performed.

[0304] In some embodiments, the second BSS is a duplicate basic service set (OBSS) of the first BSS, or a BSS operating on the same channel.

[0305] In some embodiments, the intercepted or received status information includes station information of the target station.

[0306] In some embodiments, the information acquisition module 1601: The first STA is used to receive first intercepted or reception status information reported by a first STA in the first BSS. The first STA is a non-AP STA. The first intercepted or reception status information is used to indicate transmission information of a first target station in a second BSS that is intercepted or received by the first STA. The first target station is a station whose initiated transmission affects or interferes with frame exchanges in the first BSS of the first STA.

[0307] And / or, the information acquisition module 1601 is used to intercept or receive data units and acquire second intercept or reception status information, which is used to indicate transmission information of a second target station in a second BSS that is intercepted or received by the first AP. The second target station is a station whose initiated transmission affects or interferes with frame exchanges in the first BSS of the first AP.

[0308] In some embodiments, the data unit comprises a physical layer protocol data unit (PPDU).

[0309] In some embodiments, the second intercepted or received status information includes PPDU transmission information carried by a PPDU intercepted or received by the first AP device. The transmission sub-information includes at least one of a transmission type, a BSS color, a BSSID, a sender association identifier AID, a sender partial AID, a sender MAC address, a receiver association identifier AID, a receiver partial AID, and a receiver MAC address, where the transmission type includes an upstream transmission, a downstream transmission, or a point-to-point P2P transmission.

[0310] In some embodiments, the report message frame for reporting the first intercepted or received status information includes PPDU transmission information carried by the PPDU intercepted or received by the first STA device. The transmission sub-information includes at least one of a transmission type, a BSS color, a BSSID, a sender association identifier AID, a sender partial AID, a sender MAC address, a receiver association identifier AID, a receiver partial AID, and a receiver MAC address, where the transmission type includes an upstream transmission, a downstream transmission, or a point-to-point P2P transmission.

[0311] In some embodiments, the report message frame includes a PPDU transmission information element, and the PPDU transmission information element includes a PPDU transmission information control field and a PPDU transmission information field.

[0312] The PPDU transmission control information field is used to indicate the information format of the PPDU transmission information field.

[0313] The PPDU transmission information field is used to carry the PPDU transmission information.

[0314] In some embodiments, the PPDU transmission control information field comprises: PPDU type indication information used to indicate whether the intercepted or received PPDU is from a BSS other than the first BSS; The number of PPDU transmission information, and a bitmap of the PPDU transmission information used to indicate the information type of the transmission sub-information included in the PPDU transmission information.

[0315] In some embodiments, each bit position in the bitmap of the PPDU transmission information corresponds to one type of the transmission sub-information, and the bit value of each bit position in the bitmap of the PPDU transmission information is used to indicate whether the corresponding transmission sub-information is present in the PPDU transmission information field.

[0316] In some embodiments, receiving first intercepted or reception status information reported by a first STA device in the first BSS includes: The method includes receiving the first intercepted or reception status information reported by the first STA device via a radio measurement report frame.

[0317] In some embodiments, the transmitting module is further adapted to transmit a radio measurement request frame to the first STA device, and a measurement type corresponding to the radio measurement request frame includes a designated measurement type.

[0318] In some embodiments, the designated measurement type includes a frame measurement type.

[0319] In some embodiments, the target resource information includes the target channel information.

[0320] In some embodiments, the target channel is all or some of the channels used by stations in the first BSS that overhear or receive a transmission from a second BSS.

[0321] In some embodiments, the target channel is an operating channel on a link corresponding to an r-TWT operation established in the first BSS.

[0322] In some embodiments, the target time is the time at which stations in the first BSS that overhear or receive a transmission from a second BSS will contend for the channel and / or transmit.

[0323] In some embodiments, the target time information includes information on a time period corresponding to a limited target wake-up time r-TWT service period of a station in the first BSS that overhears or receives transmission information from the second BSS.

[0324] In some embodiments, the time information of the first channel resource includes information about a time period that overlaps with an r-TWT service period of a station in the first BSS that overhears or receives transmission information from the second BSS.

[0325] 17, which is a block diagram of a transmission device according to an embodiment of the present application. The device has the functions of the steps performed by the second AP device in the second BSS in implementing the above transmission method. As shown in FIG. 17, the device includes: a receiving module 1701 used for receiving target resource information and / or target station information shared by a first AP device in a first BSS, the target resource information and / or target station information being shared by the first AP device according to intercepted or received status information, the intercepted or received status information being used to indicate transmission information of a target station in a second BSS that is intercepted or received by a station in the first BSS, the target station being a station whose initiated transmission affects or interferes with frame exchange in the first BSS of a station in the first BSS; and a restriction module 1702 used to restrict transmission on a target channel and / or a target time of a station in the second BSS according to the target resource information and / or target station information, wherein the target channel and / or target time are channels and / or times at which media access protection in the first BSS is required.

[0326] In some embodiments, the restriction module 1702 is used to restrict transmission on the target channel and / or the target time of all stations in the second BSS depending on the target resource information and / or target station information.

[0327] In some embodiments, the constraint module 1702: Controlling all stations in the second BSS to end their transmission opportunities before a start time corresponding to the target time; or Controlling all stations in the second BSS to be in a silent state during a time period corresponding to the target time, or allowing all stations in the second BSS to contend for TXOPs using a first EDCA parameter set during a time period corresponding to the target time; or Controlling all stations in the second BSS to end a transmission opportunity before a start time corresponding to the target time, and controlling all stations in the second BSS to be silent during a time period corresponding to the target time; or This is used to control all stations in the second BSS to end their transmission opportunities before the start time corresponding to the target time, and to allow all stations in the second BSS to contend for TXOPs using the first EDCA parameter set during the time period corresponding to the target time.

[0328] Here, the priority of the first EDCA parameter set is lower than the priority corresponding to a second EDCA parameter set used by a station in the first BSS that intercepts or receives transmission information from a second BSS, or is lower than the priority corresponding to a common EDCA parameter set.

[0329] In some embodiments, the constraint module 1702: Controlling all stations in the second BSS to end a transmission opportunity on the target channel before a start time corresponding to the target time; or Controlling all stations in the second BSS to be silent on the target channel during a time period corresponding to the target time; or permitting all stations in the second BSS to contend for TXOPs on the target channel using a first EDCA parameter set during a time period corresponding to the target time; or Controlling all stations in the second BSS to end a transmission opportunity on the target channel before a start time corresponding to the target time, and controlling all stations in the second BSS to be silent on the target channel during a time period corresponding to the target time; or This parameter is used to control all stations in the second BSS to end a transmission opportunity on the target channel before a start time corresponding to the target time, and to allow all stations in the second BSS to use a first EDCA parameter set and contend for a TXOP on the target channel during a time period corresponding to the target time.

[0330] Here, the priority of the first EDCA parameter set is lower than the priority corresponding to a second EDCA parameter set used by a station in the first BSS that intercepts or receives transmission information from a second BSS, or is lower than the priority corresponding to a common EDCA parameter set.

[0331] In some embodiments, the constraint module 1702 is used to constrain the transmission of the target station on the target channel and / or the target time in response to information about the target resource and / or information about the target station.

[0332] In some embodiments, the constraint module 1702: Controlling the target station to terminate a transmission opportunity before a start time corresponding to the target time, or Controlling the target station to be in a silent state during a time period corresponding to the target time, or permitting the target station to contend for a TXOP using a first EDCA parameter set during a time period corresponding to the target time; or Controlling the target station to end a transmission opportunity before a start time corresponding to the target time, so that the target station is in a silent state during a time period corresponding to the target time; or This is used to control the target station to terminate a transmission opportunity before the start time corresponding to the target time, and to allow the target station to contend for a TXOP using a first EDCA parameter set during the time period corresponding to the target time.

[0333] Here, the priority of the first EDCA parameter set is lower than the priority corresponding to a second EDCA parameter set used by a station in the first BSS that intercepts or receives transmission information from a second BSS, or is lower than the priority corresponding to a common EDCA parameter set.

[0334] In some embodiments, the constraint module 1702: Controlling the target station to terminate a transmission opportunity on the target channel before a start time corresponding to the target time, or Controlling the target station to be silent on the target channel during a time period corresponding to the target time, or permitting the target station to contend for a TXOP on the target channel using a first EDCA parameter set during a time period corresponding to the target time; or Controlling the target station to terminate a transmission opportunity on the target channel before a start time corresponding to the target time, and controlling the target station to be silent on the target channel during a time period corresponding to the target time, or This is used to control the target station to terminate a transmission opportunity on the target channel before a start time corresponding to the target time, and to allow the target station to contend for a TXOP on the target channel using a first EDCA parameter set during a time period corresponding to the target time.

[0335] Here, the priority of the first EDCA parameter set is lower than the priority corresponding to a second EDCA parameter set used by a station in the first BSS that intercepts or receives transmission information from a second BSS, or is lower than the priority corresponding to a common EDCA parameter set.

[0336] In some embodiments, the constraint module 1702 is used to restrict the transmission of the target station on the target channel and / or the target time based on the transmission role of the target station, depending on the information of the target resource and / or the information of the target station.

[0337] Here, the transmission role is used to indicate that the target station is a transmission sender or a transmission receiver in transmission information from the second BSS that is overheard or received by a station in the first BSS.

[0338] In some embodiments, if the target station is the transmission source, the constraint module 1702: Controlling the target station to terminate a transmission opportunity before a start time corresponding to the target time, or Controlling the target station not to initiate a TXOP contention during a time period corresponding to the target time, or permitting the target station to contend for a TXOP using a first EDCA parameter set during a time period corresponding to the target time; or Controlling the target station to end a transmission opportunity before a start time corresponding to the target time, so that the target station does not initiate a TXOP contention during a time period corresponding to the target time; or This is used to control the target station to terminate a transmission opportunity before the start time corresponding to the target time, and to allow the target station to contend for a TXOP using a first EDCA parameter set during the time period corresponding to the target time.

[0339] Here, the priority of the first EDCA parameter set is lower than the priority corresponding to a second EDCA parameter set used by a station in the first BSS that intercepts or receives transmission information from a second BSS, or is lower than the priority corresponding to a common EDCA parameter set.

[0340] In some embodiments, if the target station is the transmission source, the constraint module 1702: Controlling the target station to terminate a transmission opportunity on the target channel before a start time corresponding to the target time, or Controlling the target station not to initiate TXOP contention on the target channel during a time period corresponding to the target time; or permitting the target station to contend for a TXOP on the target channel using a first EDCA parameter set during a time period corresponding to the target time; or Controlling the target station to terminate a transmission opportunity on the target channel before a start time corresponding to the target time, and controlling the target station not to initiate a TXOP contention on the target channel during a time period corresponding to the target time, or This is used to control the target station to terminate a transmission opportunity on the target channel before a start time corresponding to the target time, and to allow the target station to contend for a TXOP on the target channel using a first EDCA parameter set during a time period corresponding to the target time.

[0341] Here, the priority of the first EDCA parameter set is lower than the priority corresponding to a second EDCA parameter set used by a station in the first BSS that intercepts or receives transmission information from a second BSS, or is lower than the priority corresponding to a common EDCA parameter set.

[0342] In some embodiments, when the target station is the transmission receiver, the restriction module 1702 is used to allow the target station to initiate a transmission on a target channel and / or a target time and transmit a designated type frame to a second STA device, and / or to prohibit the target station from transmitting frames other than a designated type frame to a second STA device on the target channel and / or the target time. The second STA device is a station transmitting to the target station in transmission information from the second BSS that a station in the first BSS overheard or received. Here, the length of the response frame of the designated type frame is less than or equal to a frame length threshold.

[0343] In some embodiments, the common EDCA parameter set is a MU EDCA parameter set.

[0344] In some embodiments, the target resource information includes the target channel information.

[0345] In some embodiments, the target channel is all or some of the channels used by stations in the first BSS that overhear or receive a transmission from a second BSS.

[0346] In some embodiments, the target channel is an operating channel on a link corresponding to an r-TWT operation established in the first BSS.

[0347] In some embodiments, the target time is the time at which stations in the first BSS that overhear or receive a transmission from a second BSS will contend for the channel and / or transmit.

[0348] In some embodiments, the target time information includes information on a time period corresponding to a limited target wake-up time r-TWT service period of a station in the first BSS that overhears or receives transmission information from the second BSS.

[0349] In some embodiments, the target time information includes information about a time period that overlaps with an r-TWT service period of a station in the first BSS that overhears or receives a transmission from the second BSS.

[0350] In some embodiments, the restriction module 1702 is adapted to transmit a channel resource protection on notification frame to a third STA device in the second BSS in response to the target resource information and / or target station information, the channel resource protection on notification frame being adapted to instruct the third STA device to restrict transmission on the target channel and / or the target time.

[0351] In some embodiments, the channel resource protection on indication frame includes a periodic element to be protected.

[0352] The protected period elements include a protected period control field, a protected period count field, a protected period field, a protected period duration field, and a protected period offset field.

[0353] Here, the protected period control field is used to indicate a method for restricting transmission corresponding to the time information.

[0354] The Protected Period Count field is used to indicate the number of TBTTs that will arrive in the beacon interval in which the start time of the next time period falls.

[0355] The protected period field is used to indicate the number of beacon intervals between the start times of the time periods.

[0356] The protected period duration field is used to indicate the duration of the time period.

[0357] The Protected Period Offset field is used to indicate an offset value from the start of the time period to the TBTT defined by the Protected Period Count field.

[0358] In some embodiments, the protected period control field includes a resource protection scheme indication bitmap, where each bit position in the resource protection scheme indication bitmap corresponds to a resource protection scheme, and the bit value of each bit position in the resource protection scheme indication bitmap is used to indicate whether the corresponding resource protection scheme is on.

[0359] In some embodiments, the apparatus further comprises a transmitting module adapted to transmit a channel resource protection operation notification frame to the third STA device, the channel resource protection operation notification frame being adapted to instruct the third STA device to terminate or resume a restriction on transmission on the target channel and / or the target time.

[0360] In some embodiments, the channel resource protection operation notification frame includes an indication flag.

[0361] The instruction flag is used to indicate the termination or resumption of the restriction on transmission on the target channel and / or the target time.

[0362] In some embodiments, the receiving module 1701 is used to receive the target resource information and / or target station information directly transmitted by the first AP device, or to receive the target resource information and / or target station information indirectly transmitted by the first AP device via non-AP stations in the first BSS and the second BSS.

[0363] Referring to Figure 18, Figure 18 is a block diagram of a transmission device according to an embodiment of the present application. The device has the functions of the steps performed by a third STA device in a second BSS in implementing the above transmission method, and the third STA device is a non-AP STA. As shown in Figure 18, the device: a receiving module 1801 used for receiving a channel resource protection on notification frame transmitted by a second AP device in a second BSS, the channel resource protection on notification frame being transmitted after the second AP device receives target resource information and / or target station information transmitted by a first AP device in a first BSS, the target resource information and / or target station information being shared by the first AP device according to overhearing or reception status information, the overhearing or reception status information being used to indicate transmission information of a target station in the second BSS that is overheared or received by a station in the first BSS, the target station being a station whose initiated transmission affects or interferes with frame exchange in the first BSS of a station in the first BSS; The present invention may also include a restriction module 1802 used to restrict transmission on a target channel and / or target time of the third STA device in response to the channel resource protection on notification frame, wherein the target channel and / or target time are the channel and / or time at which media access protection in the first BSS is required.

[0364] In some embodiments, the constraint module 1802: Terminating a TXOP before the start time corresponding to said target time, or Controlling all stations in the second BSS to be in a silent state during a time period corresponding to the target time, or Not initiating a TXOP competition during the time period corresponding to said target time, or During a time period corresponding to the target time, contend for a TXOP using a first EDCA parameter set, the priority of which is lower than a priority corresponding to a second EDCA parameter set used by a station in the BSS that overhears or receives a transmission from a second BSS, or lower than a priority corresponding to a common EDCA parameter set; or Terminate a TXOP before the start time corresponding to the target time and go silent during the time period corresponding to the target time, or Terminate the TXOP before the start time corresponding to the target time, and do not initiate a TXOP contest during the time period corresponding to the target time, or Terminating a TXOP before a start time corresponding to the target time and allowing a TXOP to contend using a first EDCA parameter set during a time period corresponding to the target time; or The second STA device is used to initiate transmission on a target channel and / or a target time to permit a second STA device to transmit a designated type frame and / or prohibit the second STA device from transmitting frames other than designated type frames. The second STA device is a station that transmits to the third STA device in transmission information from the second BSS that a station in the first BSS overhears or receives. The length of the response frame of the designated type frame is equal to or less than a frame length threshold.

[0365] In some embodiments, the constraint module 1802: Terminating a TXOP on the target channel before a start time corresponding to the target time, or Controlling all stations in the second BSS to be silent on the target channel during a time period corresponding to the target time; or not initiating a TXOP contend on the target channel during a time period corresponding to the target time; or During a time period corresponding to the target time, a first EDCA parameter set is used to contend for a TXOP on the target channel, and the priority of the first EDCA parameter set is lower than a priority corresponding to a second EDCA parameter set used by a station in the first BSS that overhears or receives a transmission from a second BSS, or is lower than a priority corresponding to a common EDCA parameter set; or Ending a TXOP on the target channel before a start time corresponding to the target time and going silent on the target channel during a time period corresponding to the target time, or Terminate a TXOP on the target channel before a start time corresponding to the target time, and do not initiate a TXOP contention on the target channel during a time period corresponding to the target time; or Terminating a TXOP on the target channel before a start time corresponding to the target time, and contending for a TXOP on the target channel using a first EDCA parameter set during a time period corresponding to the target time; or The second STA device is used to initiate transmission on a target channel and / or a target time to permit a second STA device to transmit a designated type frame, and / or prohibit the second STA device from transmitting frames other than designated type frames on the target channel and / or the target time. The second STA device is a station that transmits to the third STA device in transmission information from the second BSS that a station in the first BSS overhears or receives. The length of the response frame of the designated type frame is less than or equal to a frame length threshold.

[0366] In some embodiments, the common EDCA parameter set is a MU EDCA parameter set.

[0367] In some embodiments, the target resource information includes the target channel information.

[0368] In some embodiments, the target channel is all or some of the channels used by stations in the first BSS that overhear or receive a transmission from a second BSS.

[0369] In some embodiments, the target channel is an operating channel on a link corresponding to an r-TWT operation established in the first BSS.

[0370] In some embodiments, the target time is the time at which stations in the first BSS that overhear or receive a transmission from a second BSS will contend for the channel and / or transmit.

[0371] In some embodiments, the target time information includes information on a time period corresponding to a limited target wake-up time r-TWT service period of a station in the first BSS that overhears or receives transmission information from the second BSS.

[0372] In some embodiments, the target time information includes information about a time period that overlaps with an r-TWT service period of a station in the first BSS that overhears or receives a transmission from the second BSS.

[0373] In some embodiments, the channel resource protection on indication frame includes a periodic element to be protected.

[0374] The protected period elements include a protected period control field, a protected period count field, a protected period field, a protected period duration field, and a protected period offset field.

[0375] Here, the protected period control field is used to indicate a method for restricting transmission corresponding to the time information.

[0376] The Protected Period Count field is used to indicate the number of TBTTs that will arrive in the beacon interval in which the start time of the next time period falls.

[0377] The protected period field is used to indicate the number of beacon intervals between the start times of the time periods.

[0378] The protected period duration field is used to indicate the duration of the time period.

[0379] The Protected Period Offset field is used to indicate an offset value from the start of the time period to the TBTT defined by the Protected Period Count field.

[0380] In some embodiments, the protected period control field includes a resource protection scheme indication bitmap.

[0381] Each bit position in the resource protection scheme indication bitmap corresponds to one resource protection scheme, and the bit value of each bit position in the resource protection scheme indication bitmap is used to indicate whether the corresponding resource protection scheme is on or not.

[0382] In some embodiments, the receiving module 1801 is further configured to receive a channel resource protection operation notification frame transmitted by the second AP device, which is used to instruct the third STA device to terminate or resume transmission restrictions on the target channel and / or the target time.

[0383] In some embodiments, the channel resource protection operation notification frame includes an indication flag.

[0384] The instruction flag is used to indicate the termination or resumption of the restriction on transmission on the target channel and / or the target time.

[0385] Although the device provided in the above embodiment only takes the division of the above functional modules as an example to realize its functions, in actual applications, the above functions may be assigned to different functional modules according to actual needs, that is, all or part of the above functions may be achieved by dividing the content structure of the device into different functional modules.

[0386] Regarding the apparatus in the above embodiment, the specific manner in which each module performs an operation has been described in detail in the embodiment relating to the method, and therefore will not be described in detail here.

[0387] 19, which is a schematic structural diagram of a computer device 1900 according to one embodiment of the present application. The computer device 1900 may include a processor 1901, a receiver 1902, a transmitter 1903, a memory 1904, and a bus 1905.

[0388] The processor 1901 includes one or more processing cores and executes various functional applications and information processing by executing software programs and modules.

[0389] The receiver 1902 and the transmitter 1903 may be implemented as a communication assembly, which may be a communication chip, which may also be called a transceiver.

[0390] The memory 1904 is connected to the processor 1901 via a bus 1905 .

[0391] The memory 1904 may be used to store a computer program, and the processor 1901 is used to execute the computer program to realize each step performed by the STAS device or AP device in the above method embodiments.

[0392] Additionally, memory 1904 may be implemented by any type of volatile or non-volatile storage device, or a combination thereof, including, but not limited to, a magnetic or optical disk, an electrically erasable programmable read-only memory, an erasable programmable read-only memory, a static random access memory, a read-only memory, a magnetic memory, a flash memory, and a programmable read-only memory.

[0393] In an exemplary embodiment, the computing device comprises a processor, a memory, and a transceiver (which may include a receiver and a transmitter, where the receiver is used to receive information and the transmitter is used to transmit information).

[0394] In one possible implementation manner, when the computer device is a STA device and the STA device is a first STA device in a first BSS, the transceiver is used to intercept or receive data units on the first BSS channel and obtain first intercept or reception status information, and the first intercept or reception status information is used to indicate the transmission information of a first target station in a second BSS that is intercepted or received by the first STA device, where the first target station is a station whose initiated transmission affects or interferes with the frame exchange in the first BSS of the first STA device, and reports the first intercept or reception status information to a first AP device in the first BSS.

[0395] In one possible implementation manner, when the computer device is a STA device and the STA device is a third STA device in the second BSS, the transceiver is used to receive a channel resource protection on notification frame transmitted by a second AP device in the second BSS, the channel resource protection on notification frame is transmitted after the second AP device receives target resource information and / or target station information transmitted by a first AP device in the first BSS, the target resource information and / or target station information is shared by the first AP device according to overhearing or reception status information, the overhearing or reception status information is used to indicate the transmission information of the target station in the second BSS overheard or received by the station in the first BSS, the target station is a station whose initiated transmission affects or interferes with the frame exchange in the first BSS of the station in the first BSS, and the processor is used to restrict the transmission on the target channel and / or target time of the third STA device according to the channel resource protection on notification frame, the target channel and / or target time being the channel and / or time at which media access protection in the first BSS needs to be performed.

[0396] Here, if the computer device is a STA device, the processor may be used to execute, via the transceiver, all or some of the steps performed by the first STA device or the third STA device in the embodiments shown in Figures 2, 5 or 7 above, which will not be repeated here.

[0397] In one possible implementation manner, when the computer device is an AP device and the AP device is an AP device in a first BSS, the transceiver is used to obtain overhearing or reception status information, which is used to indicate transmission information of a target station in a second BSS that a station in the first BSS overhears or receives on the first BSS channel, where the target station is a station whose initiated transmission affects or interferes with the frame exchange in the first BSS of the station in the first BSS, and according to the overhearing or reception status information, shares target resource information and / or target station information with a second AP device in the second BSS, where the target resource information and / or target station information is used by the second AP device to restrict transmission on a target channel and / or target time of the station in the second BSS, where the target channel and / or target time are the channel and / or time at which media access protection in the first BSS is required.

[0398] In one possible implementation manner, when the computer device is an AP device and the AP device is an AP device in a second BSS, the transceiver is used to receive target resource information and / or target station information shared by a first AP device in a first BSS, the target resource information and / or target station information being shared by the first AP device according to overhearing or reception status information, the overhearing or reception status information being used to indicate transmission information of a target station in a second BSS overheard or received by a station in the first BSS, the target station being a station whose initiated transmission affects or interferes with frame exchanges in the first BSS of the station in the first BSS, and the processor is used to restrict transmissions on a target channel and / or target time of the station in the second BSS according to the target resource information and / or target station information, the target channel and / or target time being a channel and / or time at which media access protection in the first BSS is required.

[0399] Here, if the computer device is an AP device, the processor and transceiver may be used to perform all or some of the steps performed by the first AP device or the second AP device in the embodiments shown in Figures 3, 4 or 7 above, which will not be repeated here.

[0400] An embodiment of the present application further provides a computer-readable storage medium, on which a computer program is stored, which, when loaded and executed by a processor, causes the computer device to perform each step performed by the first STA device, the first AP device, the second AP device, or the third STA device in the method shown in Figures 2-5 or 7 above.

[0401] The present application further provides a computer program product, the computer program product including computer instructions stored in a computer-readable storage medium, a processor of the computer device reading the computer instructions from the computer-readable storage medium, and the processor executing the computer instructions to cause the computer device to perform each step performed by the first STA device, the first AP device, the second AP device, or the third STA device in the method shown in Figures 2 to 5 or 7 above.

[0402] The present application further provides a chip, the chip having a processor, which is used to cause a computer device equipped with the chip to perform each step performed by the first STA device, the first AP device, the second AP device, or the third STA device in the method shown in Figures 2-5 or 7 above by calling and executing a computer program from a memory.

[0403] The present application further provides a computer program, which, when executed by a processor of a computer device, causes the computer device to perform each step performed by the first STA device, the first AP device, the second AP device, or the third STA device in the method shown in Figures 2-5 or 7 above.

[0404] In one or more of the above examples, those skilled in the art will appreciate that the functions described in the embodiments of the present application may be implemented in hardware, software, firmware, or any combination thereof. If implemented using software, these functions may be stored on or transmitted as one or more instructions or code on a computer-readable medium. Computer-readable media include computer storage media and communication media, where communication media includes any medium that facilitates transfer of a computer program from one place to another. Storage media may be any available medium that can be accessed by a public or private computer.

[0405] The above are merely illustrative examples of the present application and do not limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and scope of the present application shall fall within the scope of protection of the present application.

Claims

1. A transmission method comprising: The method is performed by a first station (STA) device in a first basic service set (BSS), the first STA device being a non-AP STA; The method comprises: a step of eavesdropping or receiving a data unit on a first BSS channel and obtaining first eavesdropping or reception status information, the first eavesdropping or reception status information being used to indicate transmission information of a first target station in a second BSS that has been eavesdropped or received by the first STA device, the first target station being a station whose initiated transmission affects or interferes with frame exchanges in the first BSS of the first STA device; reporting the first intercepted or received status information to a first AP device in the first BSS; Including, A transmission method characterized by:

2. The first intercepted or received status information is used by a first access point AP device in the first BSS to share target resource information and / or target station information with a second AP device in the second BSS, and the target resource information and / or target station information is used by the second AP device to restrict transmission on a target channel and / or a target time of a station in the second BSS, and the target channel and / or target time are a channel and / or a time at which media access protection in the first BSS is required.

2. The method of claim 1 .

3. The second BSS is an overlapping basic service set (OBSS) of the first BSS or a BSS operating on the same channel.

3. The method according to claim 1 or 2.

4. the first intercepted or received status information includes station information of the first target station; 4. The method according to claim 1, wherein the first and second electrodes are connected to a first electrode.

5. The data unit comprises a physical layer protocol data unit (PPDU).

5. The method according to claim 1, wherein the first and second electrodes are connected to a first electrode.

6. The method comprises: If the BSS identification information included in the intercepted or received first PPDU is different from the BSS identification information of the first BSS, determining that the station information carried by the first PPDU includes information of the first target station.

6. The method of claim 5.

7. The BSS identification information includes at least one of a BSSID and a BSS color.

7. The method of claim 6.

8. The report message frame for reporting the first intercepted or received status information includes PPDU transmission information carried by a PPDU intercepted or received by the first STA device, and the PPDU transmission information includes: The transmission sub-information includes at least one of a transmission type, a BSS color, a BSSID, a sender association identifier AID, a sender partial AID, a sender MAC address, a receiver association identifier AID, a receiver partial AID, and a receiver MAC address; The transmission type includes upstream transmission, downstream transmission, or point-to-point P2P transmission; 8. A method according to any one of claims 5 to 7.

9. the report message frame includes a PPDU transmission information element, the PPDU transmission information element including a PPDU transmission information control field and a PPDU transmission information field; The PPDU transmission control information field is used to indicate the information format of the PPDU transmission information field, The PPDU transmission information field is used to carry the PPDU transmission information.

9. The method of claim 8.

10. The PPDU transmission control information field PPDU type indication information used to indicate whether the intercepted or received PPDU is from a BSS other than the first BSS; the number of PPDU transmission information; a bitmap of PPDU transmission information used to indicate the information type of transmission sub-information included in the PPDU transmission information; The information includes at least one of 10. The method of claim 9.

11. Each bit position in the PPDU transmission information bitmap corresponds to one type of transmission sub-information, and the bit value of each bit position in the PPDU transmission information bitmap is used to indicate whether the corresponding transmission sub-information exists in the PPDU transmission information field.

11. The method of claim 10.

12. the report message frame for reporting the first interception or reception status information is a radio measurement report frame; 12. The method according to any one of claims 1 to 11.

13. The step of reporting the first intercepted or received status information to a first AP device in the first BSS includes: When a radio measurement request frame is received and a measurement type corresponding to the radio measurement request frame includes a designated measurement type, reporting the first interception or reception status information to the first AP device; 13. The method according to any one of claims 1 to 12.

14. The specified measurement type includes a frame measurement type.

14. The method of claim 13.

15. A transmission method comprising: The method is performed by a first AP device in a first BSS; The method comprises: acquiring overhearing or reception status information, the overhearing or reception status information being used to indicate transmission information of a target station in a second BSS that a station in the first BSS overhears or receives on a first BSS channel, the target station being a station whose initiated transmission affects or interferes with a frame exchange in the first BSS of a station in the first BSS; a step of sharing target resource information and / or target station information with a second AP device in the second BSS according to the overhearing or reception status information, the target resource information and / or target station information being used by the second AP device to restrict transmission on a target channel and / or a target time of a station in the second BSS, the target channel and / or the target time being a channel and / or a time for which media access protection in the first BSS is required; Including, A transmission method characterized by:

16. The second BSS is an overlapping basic service set (OBSS) of the first BSS or a BSS operating on the same channel.

16. The method of claim 15.

17. The intercepted or received status information includes station information of the target station; 17. The method according to claim 15 or 16.

18. The step of obtaining interception or reception status information includes: receiving first intercepted or reception status information reported by a first STA in the first BSS, the first STA being a non-AP STA, the first intercepted or reception status information being used to indicate transmission information of a first target station in a second BSS that has been intercepted or received by the first STA, the first target station being a station whose initiated transmission affects or interferes with frame exchange in the first BSS of the first STA; and / or a step of intercepting or receiving a data unit and obtaining second intercepted or received status information, the second intercepted or received status information being used to indicate transmission information of a second target station in a second BSS that was intercepted or received by the first AP device, the second target station being a station whose initiated transmission affects or interferes with frame exchanges in the first BSS of the first AP device; Including, 18. The method according to any one of claims 15 to 17.

19. The data unit comprises a physical layer protocol data unit (PPDU).

20. The method of claim 18.

20. The second intercepted or received status information includes PPDU transmission information carried by a PPDU intercepted or received by the first AP device, and the PPDU transmission information is: The transmission sub-information includes at least one of a transmission type, a BSS color, a BSSID, a sender association identifier AID, a sender partial AID, a sender MAC address, a receiver association identifier AID, a receiver partial AID, and a receiver MAC address; The transmission type includes upstream transmission, downstream transmission, or point-to-point P2P transmission; 20. The method of claim 19.

21. The report message frame for reporting the first intercepted or received status information includes PPDU transmission information carried by a PPDU intercepted or received by the first STA device, and the PPDU transmission information includes: The transmission sub-information includes at least one of a transmission type, a BSS color, a BSSID, a sender association identifier AID, a sender partial AID, a sender MAC address, a receiver association identifier AID, a receiver partial AID, and a receiver MAC address; The transmission type includes upstream transmission, downstream transmission, or point-to-point P2P transmission; 20. The method of claim 19.

22. the report message frame includes a PPDU transmission information element, the PPDU transmission information element including a PPDU transmission information control field and a PPDU transmission information field; The PPDU transmission control information field is used to indicate the information format of the PPDU transmission information field, The PPDU transmission information field is used to carry the PPDU transmission information.

22. The method of claim 21 .

23. The PPDU transmission control information field PPDU type indication information used to indicate whether the intercepted or received PPDU is from a BSS other than the first BSS; the number of PPDU transmission information; a bitmap of PPDU transmission information used to indicate the information type of transmission sub-information included in the PPDU transmission information; The information includes at least one of 23. The method of claim 22.

24. Each bit position in the PPDU transmission information bitmap corresponds to one type of transmission sub-information, and the bit value of each bit position in the PPDU transmission information bitmap is used to indicate whether the corresponding transmission sub-information exists in the PPDU transmission information field.

24. The method of claim 23.

25. The step of receiving first intercepted or reception status information reported by a first STA device in the first BSS includes: receiving the first intercepted or reception status information reported by the first STA via a radio measurement report frame; 25. The method according to any one of claims 18 to 24.

26. The method comprises: transmitting a radio measurement request frame to the first STA, wherein a measurement type corresponding to the radio measurement request frame includes a designated measurement type; 26. The method of claim 25.

27. The specified measurement type includes a frame measurement type.

27. The method of claim 26.

28. The information on the target resource includes information on the target channel.

28. The method according to any one of claims 15 to 27.

29. The target channel is all or a part of channels used by a station in the first BSS that overhears or receives transmission information from a second BSS.

29. The method of claim 28.

30. the target channel is an operating channel on a link corresponding to an r-TWT operation established in the first BSS; 30. The method of claim 29.

31. The target time is a time when a station in the first BSS that overhears or receives transmission information from the second BSS will contend for the channel and / or transmit.

28. The method according to any one of claims 15 to 27.

32. The information on the target time is and information on a time period corresponding to a limited target wake-up time (r-TWT) service period of a station in the first BSS that overhears or receives transmission information from the second BSS.

32. The method of claim 31 .

33. The time information of the first channel resource is and information about a time period that overlaps with an r-TWT service period of a station in the first BSS that overhears or receives transmission information from the second BSS.

33. The method of claim 32.

34. A transmission method comprising: the method being performed by a second AP device in a second BSS; The method comprises: receiving target resource information and / or target station information shared by a first AP device in a first BSS, the target resource information and / or target station information being shared by the first AP device according to intercepted or received status information, the intercepted or received status information being used to indicate transmission information of a target station in the second BSS that has been intercepted or received by a station in the first BSS, the target station being a station whose initiated transmission will affect or interfere with frame exchange in the first BSS of a station in the first BSS; restricting transmissions on a target channel and / or a target time of a station in the second BSS according to the target resource information and / or the target station information, wherein the target channel and / or the target time are channels and / or times for which media access protection in the first BSS is required; Including, A transmission method characterized by:

35. The step of restricting transmission of a station in the second BSS on a target channel and / or a target time in response to the target resource information and / or the target station information includes: restricting transmission of all stations in the second BSS on the target channel and / or the target time in response to the target resource information and / or target station information.

35. The method of claim 34.

36. The step of restricting transmission of all stations in the second BSS at the target time comprises: controlling all stations in the second BSS to end their transmission opportunities before a start time corresponding to the target time; or controlling all stations in the second BSS to be in a silent state during a time period corresponding to the target time; or allowing all stations in the second BSS to contend for a TXOP using a first EDCA parameter set during a time period corresponding to the target time; or Controlling all stations in the second BSS to end their transmission opportunities before a start time corresponding to the target time, so that all stations in the second BSS are in a silent state during a time period corresponding to the target time; or controlling all stations in the second BSS to terminate their transmission opportunities before a start time corresponding to the target time, thereby allowing all stations in the second BSS to contend for a TXOP using a first EDCA parameter set during a time period corresponding to the target time; Including, a priority of the first EDCA parameter set is lower than a priority corresponding to a second EDCA parameter set used by a station in the first BSS that overhears or receives transmission information from a second BSS, or is lower than a priority corresponding to a common EDCA parameter set; 36. The method of claim 35.

37. The step of constraining transmissions of stations in the second BSS on the target channel and at the target time comprises: controlling all stations in the second BSS to terminate a transmission opportunity on the target channel before a start time corresponding to the target time; or controlling all stations in the second BSS to be silent on the target channel during a time period corresponding to the target time; or allowing all stations in the second BSS to contend for a TXOP on the target channel using a first EDCA parameter set during a time period corresponding to the target time; or Controlling all stations in the second BSS to end a transmission opportunity on the target channel before a start time corresponding to the target time, and controlling all stations in the second BSS to be silent on the target channel during a time period corresponding to the target time; or controlling all stations in the second BSS to terminate a transmission opportunity on the target channel before a start time corresponding to the target time, and allowing all stations in the second BSS to contend for a TXOP on the target channel using a first EDCA parameter set during a time period corresponding to the target time; Including, a priority of the first EDCA parameter set is lower than a priority corresponding to a second EDCA parameter set used by a station in the first BSS that overhears or receives transmission information from a second BSS, or is lower than a priority corresponding to a common EDCA parameter set; 36. The method of claim 35.

38. The step of restricting transmission of a station in the second BSS on a target channel and / or a target time in response to the target resource information and / or the target station information includes: restricting transmission of the target station on the target channel and / or the target time in response to information about the target resource and / or information about the target station; 35. The method of claim 34.

39. The step of restricting transmission of the target station at the target time comprises: controlling the target station to terminate a transmission opportunity before a start time corresponding to the target time; or controlling the target station to be in a silent state during a time period corresponding to the target time; or allowing the target station to contend for a TXOP using a first EDCA parameter set during a time period corresponding to the target time; or Controlling the target station to end a transmission opportunity before a start time corresponding to the target time, so that the target station is in a silent state during a time period corresponding to the target time; or controlling the target station to terminate a transmission opportunity before a start time corresponding to the target time, thereby allowing the target station to contend for a TXOP using a first EDCA parameter set during a time period corresponding to the target time; Including, a priority of the first EDCA parameter set is lower than a priority corresponding to a second EDCA parameter set used by a station in the first BSS that overhears or receives transmission information from a second BSS, or is lower than a priority corresponding to a common EDCA parameter set; 39. The method of claim 38.

40. The step of restricting transmission of the target station on the target channel and at the target time comprises: controlling the target station to terminate a transmission opportunity on the target channel before a start time corresponding to the target time; or controlling the target station to be silent on the target channel during a time period corresponding to the target time; or permitting the target station to contend for a TXOP on the target channel using a first EDCA parameter set during a time period corresponding to the target time; or Controlling the target station to terminate a transmission opportunity on the target channel before a start time corresponding to the target time, and controlling the target station to be silent on the target channel during a time period corresponding to the target time; or controlling the target station to terminate a transmission opportunity on the target channel before a start time corresponding to the target time, and allowing the target station to contend for a TXOP on the target channel using a first EDCA parameter set during a time period corresponding to the target time; Including, a priority of the first EDCA parameter set is lower than a priority corresponding to a second EDCA parameter set used by a station in the first BSS that overhears or receives transmission information from a second BSS, or is lower than a priority corresponding to a common EDCA parameter set; 39. The method of claim 38.

41. The step of restricting transmission of the target station on a target channel and / or a target time in accordance with the information on the target resource and / or the information on the target station includes: restricting transmission of the target station on the target channel and / or the target time based on a transmission role of the target station in response to information on the target resource and / or information on the target station; The transmission role is used to indicate that the target station is a transmission sender or a transmission receiver in transmission information from the second BSS that is overheard or received by a station in the first BSS.

39. The method of claim 38.

42. If the target station is the transmission source, the step of restricting transmission of the target station at the target time comprises: controlling the target station to terminate a transmission opportunity before a start time corresponding to the target time; or controlling the target station not to initiate a TXOP competition during a time period corresponding to the target time; or allowing the target station to contend for a TXOP using a first EDCA parameter set during a time period corresponding to the target time; or Controlling the target station to end a transmission opportunity before a start time corresponding to the target time, so that the target station does not initiate a TXOP competition during a time period corresponding to the target time; or controlling the target station to terminate a transmission opportunity before a start time corresponding to the target time, thereby allowing the target station to contend for a TXOP using a first EDCA parameter set during a time period corresponding to the target time; Including, a priority of the first EDCA parameter set is lower than a priority corresponding to a second EDCA parameter set used by a station in the first BSS that overhears or receives transmission information from a second BSS, or is lower than a priority corresponding to a common EDCA parameter set; 42. The method of claim 41 .

43. If the target station is the transmission source, the step of constraining the transmission of the target station on the target channel and at the target time comprises: controlling the target station to terminate a transmission opportunity on the target channel before a start time corresponding to the target time; or controlling the target station not to initiate a TXOP contention on the target channel during a time period corresponding to the target time; or permitting the target station to contend for a TXOP on the target channel using a first EDCA parameter set during a time period corresponding to the target time; or Controlling the target station to terminate a transmission opportunity on the target channel before a start time corresponding to the target time, and controlling the target station not to initiate a TXOP contention on the target channel during a time period corresponding to the target time; or controlling the target station to terminate a transmission opportunity on the target channel before a start time corresponding to the target time, and allowing the target station to contend for a TXOP on the target channel using a first EDCA parameter set during a time period corresponding to the target time; Including, a priority of the first EDCA parameter set is lower than a priority corresponding to a second EDCA parameter set used by a station in the first BSS that overhears or receives transmission information from a second BSS, or is lower than a priority corresponding to a common EDCA parameter set; 42. The method of claim 41 .

44. If the target station is the transmission receiver, the step of restricting transmission of the target station on the target channel and / or the target time comprises: the target station initiating transmission on the target channel and / or the target time and permitting a second STA device to transmit a designated type frame; and / or a step of prohibiting the target station from transmitting frames other than designated type frames to a second STA device on the target channel and / or at the target time, the second STA device being a station transmitting to the target station in transmission information from the second BSS overheard or received by a station in the first BSS, and the length of a response frame of the designated type frame being equal to or less than a frame length threshold; 42. The method of claim 41 .

45. the common EDCA parameter set is a MU EDCA parameter set; 44. The method of any one of claims 36, 37, 39, 40, 42 and 43.

46. The information on the target resource includes information on the target channel.

46. ​​The method of any of claims 35 to 45.

47. The target channel is all or a part of channels used by a station in the first BSS that overhears or receives transmission information from a second BSS.

47. The method of claim 46.

48. the target channel is an operating channel on a link corresponding to an r-TWT operation established in the first BSS; 48. The method of claim 47.

49. The target time is a time when a station in the first BSS that overhears or receives transmission information from the second BSS will contend for the channel and / or transmit.

46. ​​The method of any of claims 35 to 45.

50. The information on the target time is and information on a time period corresponding to a limited target wake-up time (r-TWT) service period of a station in the first BSS that overhears or receives transmission information from the second BSS.

50. The method of claim 49.

51. The information on the target time is and information about a time period that overlaps with an r-TWT service period of a station in the first BSS that overhears or receives transmission information from the second BSS.

51. The method of claim 50.

52. The step of restricting transmission of a station in the second BSS on a target channel and / or a target time in response to the target resource information and / or the target station information includes: transmitting a channel resource protection on notification frame to a third STA device in the second BSS according to the target resource information and / or the target station information, the channel resource protection on notification frame being used to instruct the third STA device to restrict transmission on the target channel and / or the target time; 52. The method of claim 50 or 51.

53. the channel resource protection on notification frame includes a periodic element to be protected; the protected period elements include a protected period control field, a protected period count field, a protected period field, a protected period duration field, and a protected period offset field; the protected periodicity control field is used to indicate a method for restricting transmission corresponding to the time information; the Protected Period Count field is used to indicate the number of TBTTs that will arrive in the beacon interval in which the start time of the next time period falls; the protected period field is used to indicate the number of beacon intervals between start times of the time period; the protected period duration field is used to indicate the duration of the time period; the Protected Period Offset field is used to indicate an offset value from the start of the time period to the TBTT defined by the Protected Period Count field.

53. The method of claim 52.

54. the protected period control field includes a resource protection scheme indication bitmap; Each bit position in the resource protection scheme indication bitmap corresponds to a resource protection scheme, and a bit value at each bit position in the resource protection scheme indication bitmap is used to indicate whether the corresponding resource protection scheme is on or not; 54. The method of claim 53.

55. The method comprises: The method further includes transmitting a channel resource protection operation notification frame to the third STA, wherein the channel resource protection operation notification frame is used to instruct the third STA to terminate or resume transmission restrictions on the target channel and / or the target time.

55. The method of any of claims 52 to 54.

56. The channel resource protection operation notification frame includes an instruction flag; the indication flag is used to indicate termination or resumption of the restriction on transmission on the target channel and / or the target time; 56. The method of claim 55.

57. The step of receiving information about a target resource and / or information about a target station shared by a first AP device in a first BSS includes: receiving the target resource information and / or target station information directly transmitted by the first AP device; Alternatively, receiving the information on the target resource and / or the information on the target station indirectly transmitted by the first AP device via non-AP stations in the first BSS and the second BSS; Including, 57. The method of any of claims 35 to 56.

58. A transmission control method, comprising: the method is performed by a third STA device in a second BSS, the third STA device being a non-AP STA; The method comprises: receiving a channel resource protection on notification frame transmitted by a second AP device in the second BSS, the channel resource protection on notification frame being transmitted by the second AP device after the second AP device receives target resource information and / or target station information transmitted by a first AP device in the first BSS, the target resource information and / or target station information being shared by the first AP device according to intercepted or received status information, the intercepted or received status information being used to indicate transmission information of a target station in the second BSS that has been intercepted or received by a station in the first BSS, the target station being a station whose initiated transmission affects or interferes with frame exchange in the first BSS of a station in the first BSS; restricting transmission of the third STA on a target channel and / or a target time in response to the channel resource protection on notification frame, wherein the target channel and / or the target time are a channel and / or a time for which media access protection in the first BSS is required; Including, A transmission control method comprising:

59. The step of restricting transmission of the third STA device at the target time corresponding to the signal interference includes: terminating the TXOP before a start point corresponding to the target time; or controlling all stations in the second BSS to be in a silent state during a time period corresponding to the target time; or not initiating a TXOP competition during a time period corresponding to the target time; or contending for a TXOP using a first EDCA parameter set during a time period corresponding to the target time, the first EDCA parameter set having a lower priority than a second EDCA parameter set used by a station in the BSS that overhears or receives a transmission from a second BSS, or a lower priority than a common EDCA parameter set; or terminating a TXOP before a start time corresponding to the target time and going silent during a time period corresponding to the target time; or Terminating the TXOP before a start time corresponding to the target time, and not initiating a TXOP competition during the time period corresponding to the target time; or Terminating a TXOP before a start time corresponding to the target time and allowing contention for the TXOP using a first EDCA parameter set during a time period corresponding to the target time; or a step of initiating transmission on the target channel and / or the target time and permitting the second STA to transmit a designated type frame, and / or a step of prohibiting the second STA from transmitting frames other than the designated type frame, wherein the second STA is a station transmitting to the third STA in transmission information from the second BSS that is overheard or received by a station in the first BSS, and the length of a response frame of the designated type frame is less than or equal to a frame length threshold; Including, 59. The method of claim 58.

60. The step of restricting transmission of the third STA device on a target channel and a target time corresponding to the signal interference includes: terminating a TXOP on the target channel before a start time corresponding to the target time; or controlling all stations in the second BSS to be silent on the target channel during a time period corresponding to the target time; or not initiating a TXOP contend on the target channel during a time period corresponding to the target time; or contending for a TXOP on the target channel using a first EDCA parameter set during a time period corresponding to the target time, the first EDCA parameter set having a lower priority than a second EDCA parameter set used by a station in the first BSS that overhears or receives a transmission from a second BSS, or a lower priority than a common EDCA parameter set; or terminating a TXOP on the target channel before a start time corresponding to the target time, and going silent on the target channel during a time period corresponding to the target time; or Terminating a TXOP on the target channel before a start time corresponding to the target time, and not initiating a TXOP contention on the target channel during a time period corresponding to the target time; or terminating a TXOP on the target channel before a start time corresponding to the target time, and allowing contention for a TXOP on the target channel using a first EDCA parameter set during a time period corresponding to the target time; or a step of initiating transmission on the target channel and / or the target time and permitting the second STA to transmit a designated type frame, and / or a step of prohibiting the second STA from transmitting frames other than the designated type frame on the target channel and / or the target time, wherein the second STA is a station transmitting to the third STA in transmission information from the second BSS overheard or received by a station in the first BSS, and the length of a response frame of the designated type frame is less than or equal to a frame length threshold; Including, 59. The method of claim 58.

61. the common EDCA parameter set is a MU EDCA parameter set; 61. The method of claim 59 or 60.

62. The information on the target resource includes information on the target channel.

62. The method of any of claims 58 to 61.

63. The target channel is all or a part of channels used by a station in the first BSS that overhears or receives transmission information from a second BSS.

63. The method of claim 62.

64. the target channel is an operating channel on a link corresponding to an r-TWT operation established in the first BSS; 64. The method of claim 63.

65. The target time is a time when a station in the first BSS that overhears or receives transmission information from the second BSS will contend for the channel and / or transmit.

65. The method of claims 58 to 64.

66. The information on the target time is and information on a time period corresponding to a limited target wake-up time (r-TWT) service period of a station in the first BSS that overhears or receives transmission information from the second BSS.

66. The method of claim 65.

67. The information on the target time is and information about a time period that overlaps with an r-TWT service period of a station in the first BSS that overhears or receives transmission information from the second BSS.

67. The method of claim 66.

68. the channel resource protection on notification frame includes a periodic element to be protected; the protected period elements include a protected period control field, a protected period count field, a protected period field, a protected period duration field, and a protected period offset field; the protected periodicity control field is used to indicate a method for restricting transmission corresponding to the time information; the Protected Period Count field is used to indicate the number of TBTTs that will arrive in the beacon interval in which the start time of the next time period falls; the protected period field is used to indicate the number of beacon intervals between start times of the time period; the protected period duration field is used to indicate the duration of the time period; the Protected Period Offset field is used to indicate an offset value from the start of the time period to the TBTT defined by the Protected Period Count field.

68. The method of claim 66 or 67.

69. the protected period control field includes a resource protection scheme indication bitmap; Each bit position in the resource protection scheme indication bitmap corresponds to a resource protection scheme, and a bit value at each bit position in the resource protection scheme indication bitmap is used to indicate whether the corresponding resource protection scheme is on or not; 69. The method of claim 68.

70. The method comprises: The method further includes receiving a channel resource protection operation notification frame transmitted by the second AP device, the channel resource protection operation notification frame being used to instruct the third STA device to terminate or resume transmission restrictions on the target channel and / or the target time.

70. The method of any of claims 58 to 69.

71. The channel resource protection operation notification frame includes an instruction flag; the indication flag is used to indicate termination or resumption of the restriction on transmission on the target channel and / or the target time; 71. The method of claim 70.

72. A transmission device, comprising: an interception module used to intercept or receive data units on a first BSS channel and obtain first interception or reception status information, the first interception or reception status information being used to indicate transmission information of a first target station in a second BSS that is intercepted or received by the first STA, the first target station being a station whose initiated transmission affects or interferes with frame exchange in the first BSS of the first STA; a reporting module adapted to report the first intercepted or received status information to a first AP device in the first BSS; Equipped with A transmission device characterized by:

73. an information acquisition module used to acquire intercepted or reception status information, the intercepted or reception status information being used to indicate transmission information of a target station in a second BSS that is intercepted or received by a station in a first BSS channel, the target station being a station whose initiated transmission affects or interferes with frame exchange in the first BSS of a station in the first BSS; a transmitting module used to share target resource information and / or target station information with a second AP device in the second BSS according to the overhearing or reception status information, the target resource information and / or target station information being used by the second AP device to restrict transmission on a target channel and / or a target time of a station in the second BSS, the target channel and / or the target time being a channel and / or a time when media access protection in the first BSS is required; Equipped with A transmission device characterized by:

74. A transmission device, comprising: a receiving module used to receive target resource information and / or target station information shared by a first AP device in a first BSS, the target resource information and / or target station information being shared by the first AP device according to intercepted or received status information, the intercepted or received status information being used to indicate transmission information of a target station in a second BSS that is intercepted or received by a station in the first BSS, the target station being a station whose initiated transmission affects or interferes with frame exchange in the first BSS of a station in the first BSS; a restriction module used to restrict transmission on a target channel and / or a target time of a station in the second BSS according to the target resource information and / or the target station information, the target channel and / or the target time being a channel and / or a time when media access protection in the first BSS is required; Equipped with A transmission device characterized by:

75. A transmission device, comprising: a receiving module used to receive a channel resource protection on notification frame transmitted by a second AP device in a second BSS, the channel resource protection on notification frame being transmitted after the second AP device receives target resource information and / or target station information transmitted by a first AP device in a first BSS, the target resource information and / or target station information being shared by the first AP device according to intercepted or received status information, the intercepted or received status information being used to indicate transmission information of a target station in the second BSS that is intercepted or received by a station in the first BSS, the target station being a station whose initiated transmission affects or interferes with frame exchange in the first BSS of a station in the first BSS; a restriction module configured to restrict transmission of the third STA on a target channel and / or a target time in response to the channel resource protection on notification frame, the target channel and / or the target time being a channel and / or a time during which media access protection in the first BSS is required; Equipped with A transmission device characterized by:

76. An STA device, The STA device is a first STA device in a first BSS, and the first STA device is a non-AP STA, and the STA device comprises a processor, a memory, and a transceiver; The transceiver is used to eavesdrop or receive data units on a first BSS channel and obtain first eavesdropping or reception status information, and the first eavesdropping or reception status information is used to indicate transmission information of a first target station in a second BSS that has been eavesdropped or received by the first STA device, the first target station being a station whose initiated transmission affects or interferes with frame exchange in the first BSS of the first STA device, and reports the first eavesdropping or reception status information to a first AP device in the first BSS. STA device characterized by:

77. An AP device, the AP device is an AP device in a first BSS, the AP device comprising a processor, a memory, and a transceiver; The transceiver is used to acquire eavesdropping or reception status information, which is used to indicate transmission information of a target station in a second BSS that a station in the first BSS eavesdropped or received on a first BSS channel, the target station being a station whose initiated transmission affects or interferes with frame exchange in the first BSS of the station in the first BSS; and, in response to the eavesdropping or reception status information, shares target resource information and / or target station information with a second AP device in the second BSS; the target resource information and / or target station information is used by the second AP device to restrict transmission on a target channel and / or target time of the station in the second BSS, the target channel and / or target time being a channel and / or time for which media access protection in the first BSS is required. The AP device is characterized by:

78. An AP device, the AP device is an AP device in a second BSS, the AP device comprising a processor, a memory, and a transceiver; the transceiver is used to receive target resource information and / or target station information shared by a first AP device in a first BSS, the target resource information and / or target station information being shared by the first AP device according to intercepted or received status information, the intercepted or received status information being used to indicate transmission information of a target station in the second BSS that is intercepted or received by a station in the first BSS, the target station being a station whose initiated transmission affects or interferes with frame exchange in the first BSS of a station in the first BSS; The processor is adapted to restrict transmissions on a target channel and / or a target time of a station in the second BSS according to the target resource information and / or the target station information, the target channel and / or the target time being a channel and / or a time for which media access protection in the first BSS is required. The AP device is characterized by:

79. An STA device, The STA device is a third STA device in a second BSS, and the third STA device is a non-AP STA, the STA device comprising a processor, a memory, and a transceiver; the transceiver is used to receive a channel resource protection on notification frame transmitted by a second AP device in the second BSS, the channel resource protection on notification frame being transmitted after the second AP device receives target resource information and / or target station information transmitted by a first AP device in the first BSS, the target resource information and / or target station information being shared by the first AP device according to intercepted or received status information, the intercepted or received status information being used to indicate transmission information of a target station in the second BSS that has been intercepted or received by a station in the first BSS, the target station being a station whose initiated transmission affects or interferes with frame exchange in the first BSS of a station in the first BSS; The processor is configured to restrict transmission of the third STA on a target channel and / or a target time in response to the channel resource protection on notification frame, the target channel and / or the target time being a channel and / or a time for which media access protection in the first BSS is required. STA device characterized by:

80. 1. A computer-readable storage medium, comprising: The computer-readable storage medium stores a computer program, and the computer program is executed by a processor to cause a computer device to perform the method according to any one of claims 1 to 14, any one of claims 15 to 33, any one of claims 34 to 57, or any one of claims 58 to 71. A computer-readable storage medium comprising:

81. A chip, The chip includes a processor, and the processor is used to cause a computer device equipped with the chip to execute the method according to any one of claims 1 to 14, any one of claims 15 to 33, any one of claims 34 to 57, or any one of claims 58 to 71 by calling up and executing a computer program from a memory. A chip characterized by:

82. 1. A computer program product comprising: The computer program product includes computer instructions, the computer instructions being stored in a computer-readable storage medium, and a processor of a computing device reading the computer instructions from the computer-readable storage medium and executing the computer instructions to cause the computing device to perform the method of any one of claims 1 to 14, or any one of claims 15 to 33, or any one of claims 34 to 57, or any one of claims 58 to 71.

1. A computer program product comprising:

83. A computer program comprising: The computer program, when executed by a processor of a computing device, causes the computing device to perform the method of any one of claims 1 to 14, the method of any one of claims 15 to 33, the method of any one of claims 34 to 57, or the method of any one of claims 58 to 71. A computer program characterized by:

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