Wireless communication method and communication device

Abstract

Provided are a wireless communication method and a communication device. The method comprises: on the basis of interference information, a first device sends a first frame to a second device, the first frame being used for indicating interference coordination operation information of one or more links and / or one or more subchannels / operating frequency bands. In the present application, the first device can send the first frame to the second device to indicate the interference coordination operation information of the one or more links and / or the one or more subchannels / operating frequency bands. On the basis of the interference coordination operation information, coordination of interference on the transmission link and / or the subchannel / operating frequency band is facilitated, thereby reducing the influence thereof on data transmission of a wireless communication system.

Description

Wireless communication method and communication device Technical Field

[0001] The present application relates to the field of communication technology, and more specifically to a wireless communication method and communication device. Background Art

[0002] In some cases, data transmission in a wireless communication system may be interfered with by other systems (eg, shared equipment systems). However, how to effectively coordinate interference and reduce the impact on data transmission in the wireless communication system is an unresolved problem.

[0003] Summary of the Invention

[0004] The present application provides a wireless communication method and a communication device. The following introduces various aspects involved in the present application.

[0005] In a first aspect, a wireless communication method is provided, including: based on interference information, a first device sends a first frame to a second device, wherein the first frame is used to indicate interference coordination operation information of one or more links and / or one or more subchannels / working frequency bands.

[0006] In a second aspect, a wireless communication method is provided, including: a second device receives a first frame sent by a first device based on interference information, wherein the first frame is used to indicate interference coordination operation information of one or more links and / or one or more sub-channels / working frequency bands.

[0007] According to a third aspect, a communication device is provided, which is a first device and includes: a sending module for sending a first frame to a second device based on interference information, wherein the first frame is used to indicate interference coordination operation information of one or more links and / or one or more sub-channels / working frequency bands.

[0008] In a fourth aspect, a communication device is provided, which is a second device and includes: a receiving module for receiving a first frame sent by a first device based on interference information, wherein the first frame is used to indicate interference coordination operation information of one or more links and / or one or more sub-channels / working frequency bands.

[0009] In a fifth aspect, a communication device is provided, comprising a processor and a memory, wherein the memory is used to store one or more computer programs, and the processor is used to call the computer program in the memory so that the communication device executes part or all of the steps in the method of the first aspect above.

[0010] In a sixth aspect, a communication device is provided, comprising a processor and a memory, wherein the memory is used to store one or more computer programs, and the processor is used to call the computer program in the memory so that the communication device executes part or all of the steps in the method of the second aspect above.

[0011] In a seventh aspect, an embodiment of the present application provides a computer-readable storage medium, which stores a computer program, and the computer program enables a communication device to execute part or all of the steps in the methods of the above aspects.

[0012] In an eighth aspect, embodiments of the present application provide a computer program product, wherein the computer program product includes a non-transitory computer-readable storage medium storing a computer program, wherein the computer program is operable to cause a communication device to perform some or all of the steps of the methods described in each of the above aspects. In some implementations, the computer program product may be a software installation package.

[0013] In a ninth aspect, an embodiment of the present application provides a chip comprising a memory and a processor, wherein the processor can call and run a computer program from the memory to implement some or all of the steps described in the methods of the above aspects.

[0014] In this application, a first device may send a first frame to a second device to indicate interference coordination information for one or more links and / or one or more subchannels / operating frequency bands. Based on the interference coordination information, it is helpful to coordinate interference on transmission links and / or subchannels / operating frequency bands, thereby reducing the impact on data transmission of the wireless communication system. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] FIG1 is a schematic diagram of a wireless communication system to which an embodiment of the present application is applicable.

[0016] FIG2 is a diagram illustrating an example of periodically adjusting the number of spatial streams.

[0017] Figure 3 is an example diagram of the signaling interaction process of P2P TWT.

[0018] FIG4 is a schematic flowchart of a wireless communication method provided in an embodiment of the present application.

[0019] FIG5 is a schematic diagram of the structure of a CDI-info frame provided in an embodiment of the present application.

[0020] FIG6 is an example diagram of the meaning of the periodic interference subfield provided in an embodiment of the present application.

[0021] FIG7 is a schematic diagram of the structure of a trigger-CDI frame provided in an embodiment of the present application.

[0022] 8A to 8C are schematic structural diagrams of TWT elements provided in embodiments of the present application.

[0023] FIG9 is a schematic diagram of the structure of a link indication frame provided in an embodiment of the present application.

[0024] FIG10 is a schematic diagram of the structure of the link information element subfield provided in an embodiment of the present application.

[0025] Figure 11 is a structural diagram of the R-TWT request type field provided in an embodiment of the present application.

[0026] FIG12 is a schematic flowchart of a wireless communication method provided in Embodiment 1 of the present application.

[0027] 13A to 13D are schematic flow charts of a wireless communication method provided in Embodiment 2 of the present application.

[0028] 14A-14B are schematic flow charts of a wireless communication method provided in Embodiment 3 of the present application.

[0029] 15A to 15C are schematic flow charts of a wireless communication method provided in Embodiment 4 of the present application.

[0030] 16A to 16C are schematic flowcharts of interference information reporting provided by embodiments of the present application.

[0031] FIG17 is a schematic structural diagram of a communication device provided in an embodiment of the present application.

[0032] FIG18 is a schematic structural diagram of a communication device provided in another embodiment of the present application.

[0033] FIG19 is a schematic structural diagram of a communication device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0034] The technical solution in this application will be described below with reference to the accompanying drawings.

[0035] Communication System

[0036] The technical solutions of the embodiments of the present application can be applied to various communication systems, such as wireless local area networks (WLAN), wireless fidelity (WiFi), high performance radio local area networks (HIPELAN), wide area networks (WAN), cellular networks, or other communication systems. For another example, the technical solutions provided in the embodiments of the present application can be applied to communication systems that adopt the 802.11 standard. For example, the 802.11 standard includes but is not limited to the 802.11ax standard, the 802.11be standard, and the next generation 802.11 standard.

[0037] FIG1 is a schematic diagram of a communication system applicable to embodiments of the present application. Referring to FIG1 , the communication devices in the communication system 100 may include access points (APs) 111 and 112, and stations (STAs) 121 and 122. STA 121 may access the network through AP 111, and STA 122 may access the network through AP 112.

[0038] In some implementations, a STA may establish an association with one or more APs, after which the associated STAs and APs may communicate. For example, as shown in FIG1 , AP 111 and STA 121 may communicate after establishing an association, and AP 112 and STA 122 may communicate after establishing an association.

[0039] In some implementations, 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, where a peer STA may refer to a device that communicates with the STA peer, for example, the peer STA may be an AP or a non-AP STA.

[0040] It should be understood that FIG1 exemplarily shows two AP STAs and two non-AP STAs, and the communication system 100 may also include a larger number of AP STAs, or the communication system 100 may include other numbers of non-AP STAs, which is not limited in the embodiments of the present application.

[0041] In addition, the above communication system can be applied to scenarios of multi-device collaboration, such as multi-AP (multiple access points, multi-AP) collaboration, or multi-site collaboration.

[0042] In the embodiments of this application, the names of AP and / or STA are not limited. In some scenarios, AP can also be called AP STA, that is, in a sense, AP is also a type of STA. In other scenarios, STA can also be called non-AP STA.

[0043] In some scenarios, the aforementioned communication device may also be a "multi-link device (MLD)," i.e., a device that can communicate via multiple communication links, where the multiple communication links may include communication links in different frequency bands, such as millimeter wave bands and / or low-frequency bands. Generally, if the multi-link device is an AP, the AP may also be referred to as a "multi-link AP." If the multi-link device is a STA, the STA may also be referred to as a "multi-link STA."

[0044] In the embodiment of the present application, the AP can be a device in a wireless network. The AP can be a communication entity such as a communication server, a router, a switch, a bridge, or the AP can include various forms of macro base stations, micro base stations, relay stations, etc. Of course, the AP can also be a chip or circuit or processing system in these various forms of devices, thereby realizing the method and function of the embodiment of the present application. The AP can be applied to a variety of scenarios, such as sensor nodes in smart cities (such as smart water meters, smart electricity meters, smart air detection nodes), smart devices in smart homes (such as smart cameras, projectors, displays, TVs, speakers, refrigerators, washing machines, etc.), nodes in the Internet of Things, entertainment terminals (such as wearable devices such as AR and VR), smart devices in smart offices (such as printers, projectors, etc.), Internet of Vehicles devices in the Internet of Vehicles, and some infrastructure in daily life scenarios (such as vending machines, self-service navigation counters in supermarkets, self-service checkout devices, self-service ordering machines), etc.

[0045] In some implementations, the role of a STA in a communication system is not absolute; in some scenarios, a STA can function as an AP. For example, when a mobile phone is connected to a router, it can be a non-AP STA, while when it is acting as a hotspot for other phones, it functions as an AP.

[0046] In the embodiments of the present application, a STA in the embodiments of the present application may be a device with wireless transceiver capabilities, such as a device that supports the 802.11 series of protocols and can communicate with an AP or other STAs. For example, a STA is any user communication device that allows a user to communicate with an AP and, in turn, with a WLAN. Examples of STAs include user equipment (UE), mobile station (MS), mobile terminal (MT), access terminal, subscriber unit, subscriber station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent, or user device.

[0047] The STA in the embodiment of the present application may also be a device that provides voice / data connectivity to users, such as a handheld device or vehicle-mounted device with wireless connection function. Examples include: mobile phones, tablet computers, laptop computers, PDAs, mobile internet devices (MIDs), wearable devices, virtual reality (VR) devices, augmented reality (AR) devices, wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in remote medical surgery, wireless terminals in smart grids, wireless terminals in transportation safety, wireless terminals in smart cities, wireless terminals in smart homes, cellular phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (PDAs), handheld devices with wireless communication capabilities, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminal devices in 5G networks or future-evolved public land mobile communication networks. The terminal equipment in the network (PLMN), etc., is not limited to this in the embodiments of the present application.

[0048] By way of example and not limitation, in the embodiments of this application, the STA may also be a wearable device. Wearable devices, also known as wearable smart devices, are a general term for wearable devices that utilize wearable technology to intelligently design and develop wearable devices for everyday wear, such as glasses, gloves, watches, clothing, and shoes. Examples include smart watches or smart glasses, as well as devices that focus on a specific application function and require integration with other devices such as smartphones, such as various smart bracelets and smart jewelry for vital sign monitoring.

[0049] In addition, in the embodiments of the present application, a STA can also be a terminal device in the Internet of Things (IoT) system. The IoT is an important component of the future development of information technology. Its main technical feature is to connect objects to the network through communication technology, thereby realizing an intelligent network that interconnects people and machines and things. In the embodiments of the present application, IoT technology can achieve massive connections, deep coverage, and terminal power saving through narrowband (NB) technology, for example.

[0050] Furthermore, in the embodiments of the present application, a STA may be a device in a connected vehicle system. The communication methods in a connected vehicle system are collectively referred to as V2X (where X represents everything). For example, V2X communication includes vehicle-to-vehicle (V2V) communication, vehicle-to-infrastructure (V2I) communication, vehicle-to-pedestrian (V2P) communication, and vehicle-to-network (V2N) communication.

[0051] In addition, in the embodiment of the present application, STA may also include sensors such as smart printers, train detectors, gas stations, etc., whose main functions include collecting data (part of the terminal equipment), receiving AP control information and downlink data, and sending electromagnetic waves to transmit data to the AP.

[0052] In addition, the AP in the embodiment of the present application may be a device for communicating with a STA. The AP may be a network device in a wireless local area network. The AP may be used to communicate with the STA through the wireless local area network.

[0053] From the perspective of the communication standards supported by the AP, in some implementations, the AP can be a device that supports the 802.11be standard. The AP can also be a device that supports various current and future 802.11 family WLAN standards, such as 802.11ax, 802.11ac, 802.11n, 802.11g, 802.11b, and 802.11a.

[0054] From the perspective of STA-supported communication standards, in some implementations, non-AP STAs can support the 802.11be standard. Non-AP STAs can also support various current and future 802.11 family wireless local area network (WLAN) standards, including 802.11ax, 802.11ac, 802.11n, 802.11g, 802.11b, and 802.11a.

[0055] In the embodiments of the present application, there is no limitation on the frequency bands supported by WLAN technology. In some implementations, the frequency bands supported by WLAN technology may include, but are not limited to, low frequency bands (e.g., 2.4 GHz, 5 GHz, 6 GHz) and high frequency bands (e.g., 45 GHz, 60 GHz).

[0056] It should be understood that the specific forms of STA and AP in the embodiments of the present application are not particularly limited and are merely illustrative.

[0057] Common equipment interference

[0058] Shared-device interference refers to interference caused by the proximity of certain operating frequency bands of wireless fidelity (Wi-Fi) sites to the operating frequency bands of other shared-device systems. This occurs when a site device is in receiving mode while another system port is in transmitting mode. The receiving device will experience severe adjacent channel interference.

[0059] Spatial stream adjustment

[0060] Related technologies have proposed a solution for periodically adjusting the number of spatial streams (NSS) to mitigate shared-device interference with non-Wi-Fi systems. Assume that a non-AP MLD and an AP MLD have two links, link 1 and link 2. Link 1 has m spatial streams, and link 2 has n spatial streams. While ensuring the total number of spatial streams remains unchanged, the number of spatial streams in link 1 and link 2 can be periodically adjusted.

[0061] For example, Figure 2 shows an example of periodic NSS adjustment by MLD. MLD announces maximum NSS = m and n on Link 1 and Link 2, respectively, using the ultra-high reliability (UHR) feature operation element in the association request frame. In the first part of each time period (duration equal to T), the non-AP MLD on Link 1 is unable to transmit due to time sharing with the overlapping basic service set (OBSS). The NSS on Link 1 is 0, and MLD switches m radio chains from Link 1 to Link 2, and the NSS on Link 2 becomes m+n. In the second part of each time period, the non-AP MLD on Link 1 resumes its transmission capability. MLD switches the m radio chains back to Link 1. The NSS on Link 1 and Link 2 return to m and n, respectively.

[0062] The periodic spatial flow adjustment scheme is only applicable in scenarios where the services of other communication systems on the shared device have a general regularity. That is, in each cycle, the service types and service times of other communication systems on the shared device are exactly the same, and there is no need to report the interference information of other communication systems on the shared device. However, the services of other communication systems on the shared device do not necessarily have a regular periodicity. Therefore, non-access point sites need to report the interference information of other communication systems on the shared device to achieve adaptive interference coordination.

[0063] Target wake time (TWT) technology

[0064] TWT technology is mainly used to control the wake-up time of wireless devices to reduce the power consumption of the devices. The TWT mechanism usually involves interaction and negotiation between STA and AP. A schedule is established between STA and AP, which consists of TWT time periods as the service period (SP) of TWT. When the time period negotiated by STA and AP arrives, STA will wake up and wait for the trigger frame sent by AP. After receiving the trigger frame, STA exchanges data with AP. After completing the data exchange, STA will enter sleep state again. The TWT mechanism can be dynamically adjusted and optimized according to the actual usage of the device and environmental changes.

[0065] The TWT mechanism allows multiple devices to negotiate and determine their own wake-up times and frequencies. By staggering the wake-up intervals for each device, multiple devices can be prevented from operating simultaneously in the same frequency band, thereby reducing adjacent channel interference. Furthermore, the TWT mechanism can be used to address co-device interference by adjusting the wake-up times of related devices through a negotiated schedule to control uplink and downlink transmissions.

[0066] Based on TWT technology, restricted target wake time (R-TWT) technology was developed. R-TWT is designed to address the challenges of low-latency services and real-time application traffic. It restricts channel access for unscheduled STAs, increasing the probability of scheduled STAs acquiring channels, thereby improving the probability of STAs scheduled using the R-TWT mechanism successfully competing for channels. R-TWT allows the R-TWT service period to be reserved in advance, preventing other Wi-Fi nodes from interfering with the service provider (SP). According to the transmission opportunity (TXOP) and backoff rules for R-TWT in 802.11be, any STA, as a TXOP holder, must ensure that the TXOP ends before the start time of the R-TWT SP when the service period is outside the service period negotiated between the STA and the AP. Furthermore, before starting to transmit any physical layer protocol data unit (PPDU), any STA must check whether there is sufficient time to complete the frame exchange before the R-TWT SP begins. If insufficient time is available, the STA should delay transmission. If the AP acts as the TXOP holder, it should ensure that the TXOP ends before the start time of the R-TWT SP.

[0067] Point-to-point (P2P) TWT

[0068] The impact of predictable interference and unpredictable interference on device coexistence is discussed in the relevant technology. In the relevant proposal, a P2P TWT solution is proposed to address the interference problem of device coexistence. As shown in Figure 3, the non-access point site device notifies its infrastructure (infrastructure) access point device of its unavailable period through the P2P TWT protocol. During the P2P TWT service period, the non-access point site device is in a dormant state. The access point device does not send data to the non-access point site device during this period. At the same time, other system shared devices can reuse the time for basic service set (BSS) and P2P group operations (P2P TWT service period). If the access point device receives a clear indication that the non-access point site device is in an awake state and an available state, it can send a data frame to the non-access point site device. P2P TWT is used to determine the time period when each device is completely unavailable as the P2P TWT service period, and the transmission time intervals of the Wi-Fi system and other communication systems of the shared devices are staggered.

[0069] The TWT mechanism can only put the entire link into hibernation. In practice, only some sub-channels in a Wi-Fi link interfere with other systems on the shared device. If the entire link is fully hibernated, Wi-Fi transmission capacity will be reduced. There is a lack of adaptive adjustment design that can only hibernate the affected sub-channels based on the interference situation, while other uninterrupted sub-channels operate normally.

[0070] Beam link maintenance timer

[0071] Related technologies use a beam link maintenance timer to maintain trained links, and the link's transmitter and receiver negotiate the duration of the link maintenance timer. When the link's transmitter receives an immediate response or confirmation (such as an acknowledgment (Ack) frame, a block acknowledgment (BA), a directional multigigabit (DMG) composition time stamp (CTS), or a DMG decoding time stamp (DTS)) from the receiver, the transmitter and receiver set the beam link maintenance timer to the beam link maintenance timer. After the setting is completed, the beam link maintenance timer begins counting down and stops when the timer reaches zero. When the beam link maintenance timer expires, the STA re-performs beamforming.

[0072] As mentioned above, other systems (such as shared device systems) may cause interference to the Wi-Fi system, thereby affecting the data transmission of the Wi-Fi system. However, related technologies have not yet effectively solved this problem.

[0073] Based on this, an embodiment of the present application proposes a wireless communication method. In this application, a first device can send a first frame to a second device to indicate interference coordination operation information for one or more links and / or one or more sub-channels / operating frequency bands. Based on the interference coordination operation information, it helps to coordinate interference on transmission links and / or sub-channels / operating frequency bands, thereby reducing the impact on data transmission in the wireless communication system.

[0074] Exemplarily, the method can be applicable to Wi-Fi systems, multi-link operation (MLO) and / or non-MLO scenarios. The method can be performed by a first device and a second device in the Wi-Fi system. For example, the first device can be an access point device in the Wi-Fi system, and the second device can be a non-access point station device in the Wi-Fi system. For another example, the first device can be a non-access point station device in the Wi-Fi system, and the second device can be an access point device in the Wi-Fi system. Non-access point station devices include non-access point multi-link devices (non-AP MLD) and non-MLD non-access point stations (non-MLD non-AP STA) devices. Access point devices include access point multi-link devices (AP MLD) and non-MLD access points (non-MLD AP) devices. As an example, non-access point station devices can simultaneously support multiple communication systems (such as Wi-Fi, Bluetooth, etc.), and non-access point station devices can obtain information such as the communication modes of other coexisting systems.

[0075] The wireless communication method of an embodiment of the present application may include step S410, as shown in FIG4 . In step S410, based on the interference information, the first device sends a first frame to the second device, where the first frame may be used to indicate interference coordination operation information for one or more links and / or one or more subchannels / operating frequency bands.

[0076] The interference information may be interference information of other systems. As an example, when the method is applied to a Wi-Fi system, the interference information may be interference information of a shared device system. For example, when a non-access point site device of a Wi-Fi system is also a device in another non-Wi-Fi system (such as a Bluetooth system), interference will occur when certain operating frequency bands of the non-access point site device of the Wi-Fi system are close to the operating frequency bands of the other non-Wi-Fi systems. That is, when the site device is in a receiving state and the port of another system is in a transmitting state, the party in the receiving state will be subject to severe adjacent channel interference.

[0077] In the embodiment of the present application, there are three types of interference coordination operation information, which are introduced below respectively.

[0078] The first interference coordination operation information

[0079] In some implementations, the interference coordination operation information can be used to instruct the interfered subchannel / operating frequency band of the interfered device to be non-operating during the unavailable time, and the unavailable time can be determined based on the interference information. For example, the non-operation of the interfered subchannel / operating frequency band can mean that the interfered subchannel / operating frequency band enters a dormant state. Based on the above-mentioned interference coordination operation information, the interfered subchannel / operating frequency band can be non-operating during the interfered time, while the uninterrupted subchannel / operating frequency band continues to operate, which helps to avoid interference without affecting the data transmission of the uninterrupted subchannel / operating frequency band. It is worth noting that this interference coordination operation information is applicable to both MLO and non-MLO scenarios.

[0080] Among them, the unavailable time may be included in or not included in the first scheduled service period, the first scheduled service period is determined based on the interference time, and the undisturbed sub-channel / working frequency band of the interfered device works within the first scheduled service period. For example, the interference time may be set to the first scheduled service period, and the unavailable time may be included in the first scheduled service period, then the interfered sub-channel / working frequency band of the interfered device does not work within the first scheduled service period. For another example, the interfered time may also be set to the first scheduled service period, and the unavailable time may not be included in the first scheduled service period, then the interfered sub-channel / working frequency band of the interfered device does not work outside the first scheduled service period. Exemplarily, the first scheduled service period may be TWT SP or R-TWT SP. Based on the first scheduled service period, it helps to improve the accuracy of interference coordination.

[0081] Based on this, the first frame may include first information, and the first information may be used to indicate the unavailable time of the interfered subchannel / working frequency band.

[0082] As an example, the first information may include one or more of the following information: the link identifier (ID) to which the interfered subchannel / working frequency band and / or the uninterrupted subchannel / working frequency band belongs; the ID of the interfered subchannel / working frequency band and / or the uninterrupted subchannel / working frequency band; the working frequency band of the interfered subchannel / working frequency band and / or the uninterrupted subchannel / working frequency band; the type of interference; the time slot of the unavailable time; whether the interfered subchannel / working frequency band and / or the uninterrupted subchannel / working frequency band is the main channel; and the minimum time slot unit. Based on the first information, it is helpful for the second device to clarify the interfered subchannel / working frequency band and / or the uninterrupted subchannel / working frequency band, as well as information related to interference.

[0083] The first frame may be based on an indication of a negotiation process for a first reserved service period. As an example, the first frame may carry a first element, and the first element may be used to negotiate the first reserved service period. For example, if the first reserved service period is TWT SP, the first frame may be a management frame for negotiating TWT SP (e.g., a TWT request (Req) or response (Resp) frame), and the first element may be a TWT element (element), and the first information may be carried in the TWT element.

[0084] Based on the first type of interference coordination operation information, the channel access rules within the first reserved service period are explained below, taking the R-TWT SP within the first reserved service period as an example (the first device is an access point device of the Wi-Fi system, and the second device is a non-access point site device of the Wi-Fi system).

[0085] (1) Channel access rules within R-TWT SP

[0086] After the non-access point site device and the access point device have negotiated the R-TWT service period, the non-access point site device should only send and receive frames on the sub-channel indicated as available in the TWT element; if the non-access point site device attempts to send frames on a sub-channel that does not belong to its R-TWT service period or is within the unavailable time, the access point device should ignore these frames; the access point device should only respond to frames received on the sub-channel indicated as available within the TWT SP.

[0087] (2) Channel access rules outside R-TWT SP

[0088] Outside of the TWT SP, one of the following can be used: ① When a non-AP site device operates in active mode in R-TWT, the non-AP site device is always awake. The AP device and the non-AP site device can compete for channels for data transmission based on Wi-Fi service requirements. ② When a non-AP site device operates in power save (PS) mode in R-TWT, the non-AP site device is in sleep mode outside the SP, and the AP device cannot send data to the non-AP site device.

[0089] The second interference coordination operation information

[0090] It is worth noting that if the interfered link is not working during the interference period, it may not be able to meet the service transmission requirements. For example, when the Wi-Fi system suddenly has a large number of uplink / downlink services to transmit, the inoperability of the interfered link may lead to asymmetric uplink and downlink transmission. Moreover, for non-periodic shared device interference, the interference time is unpredictable, and it may be difficult to ensure that the interfered link is not working during the interference time. For example, when the interference of the shared device system is bursty interference, such as Bluetooth low energy (BLE) which exhibits sudden and short-term interference, it is difficult to confirm the interference time.

[0091] Therefore, in some other implementations, the interference coordination operation information can be used to instruct all or part of the transmission or reception resources on the interfered link to be transferred to the undisturbed link, so that the interfered link does not work or the interfered link retains part of the transmission resources for transmission or reception (for example, monitoring). The interfered link and the undisturbed link can be determined by the interference information, and the interfered link can be a link that is interfered with within a specific time period. For example, when the Wi-Fi system suddenly has a large amount of uplink / downlink services to be transmitted, resulting in the inability to meet the service requirements of the Wi-Fi system, or when other systems are non-periodic interference, the first device can send such interference coordination information. Based on this, the service data on the interfered link can still be transmitted, which helps to ensure service transmission or avoid the impact of non-periodic interference. It is worth noting that this interference coordination operation information is applicable to MLO scenarios, that is, the device supports simultaneous operation of multiple links or frequency bands, and the total number of links and the number of interfered links or undisturbed links are not limited.

[0092] Based on this, the first frame may include second information, and the second information may be used to indicate the distribution of the number of spatial streams of the interfered link and the undisturbed link, and the first device may send the first frame to one of the multiple links. Exemplarily, the first frame is a first link indication frame (which will be described in detail below) or a first multi-user request to send (MU-RTS) frame. After the second device receives the first frame, it may send a response frame to the first frame, such as an ACK frame or a CTS frame. Based on the second information, it helps the second device to clearly understand how to adjust the number of spatial streams on each link.

[0093] As an example, the second information may indicate a spatial stream number distribution: the number of spatial streams on the interfered link is 0, and the number of spatial streams on the uninterrupted link is m+n, where m is the initial number of spatial streams on the interfered link, and n is the initial number of spatial streams on the uninterrupted link. That is, all spatial streams on the interfered link may be transferred to the uninterrupted link to ensure that service transmission is not affected by interference.

[0094] As another example, the second information indicates a distribution of the number of spatial streams: the number of spatial streams on the interfered link is 1, the number of spatial streams on the undisturbed link is m+n-1, where m is the initial number of spatial streams on the interfered link, n is the initial number of spatial streams on the undisturbed link, and one spatial stream on the interfered link is used for channel monitoring. That is, all spatial streams on the interfered link can be transferred to the undisturbed link, but one spatial stream is reserved on the interfered link for channel monitoring to ensure that service transmission and channel monitoring are not affected by interference. It is worth noting that the number of spatial streams reserved for channel monitoring on the interfered link is not limited and can also be multiple spatial streams.

[0095] The second information may include one or more of the following information for each link: link ID; number of available spatial streams (NSS); link operating frequency band; spatial stream switching time; maximum NSS limit; maximum modulation and coding scheme (MCS) limit; and maximum PPDU size limit. Based on the second information, the second device can determine the number of spatial streams on each link.

[0096] The following describes in detail the recovery method of the spatial streams on each link.

[0097] In some implementations, the initial state of the spatial stream number distribution is restored based on the expiration of a first timer, where the duration of the first timer is determined by the first device. That is, when the first timer expires, the spatial stream number distribution on each link is restored to its initial state. Furthermore, the start time of the first timer is determined based on the time when the first device receives a response frame to the first frame. That is, when the first device receives a response frame from the second device regarding the first frame, the first and second devices can start the first timer. This facilitates convenient restoration of the initial state of the spatial stream number distribution based on the first timer.

[0098] In some other implementations, the method shown in FIG4 further includes: the first device sending a second frame to the second device. The second frame may be used to indicate restoration of the initial state of the spatial stream number distribution. That is, the first device may send an indication of restoration of the spatial stream number to the second device, helping the second device to clarify the timing of the spatial stream number distribution. Furthermore, the second frame may be a first link indication frame.

[0099] It is worth noting that, based on the second type of interference coordination operation information, the embodiment of the present application uses request to send (RTS) / clear to send (CTS) to make TXOP reservations on the 5GHz link. In practice, multiple access methods can be used, and there is no restriction on the access mechanism.

[0100] The third type of interference coordination operation information

[0101] In other implementations, the interference coordination operation information can be used to instruct the interfered device to transmit and receive synchronously with the interfering system on the interfered link, or to prevent the interfered device from operating on the interfered link when the interfering system is transmitting or receiving. For example, when a Wi-Fi system is interfered with by a shared device system, when other systems with non-access point site devices share the device and transmit data, the interfered link of the Wi-Fi system performs uplink transmission or does not perform data transmission; or when other systems with non-access point site devices share the device and receive data, the interfered link of the Wi-Fi system performs downlink transmission or does not perform data transmission. This helps to ensure data transmission on the interfered link while avoiding interference. It is worth noting that this interference coordination operation information is applicable to both MLO and non-MLO scenarios.

[0102] Based on this, the first frame may include third information, and the third information may be used to indicate the uplink and downlink transmission rhythm of the interfered link within the first scheduled service period. The first scheduled service period may be determined based on the time when the first device or the second device sends data in the interfering system. For example, when the first device or the second device is a non-access point site device in a Wi-Fi system, the time when the first device or the second device sends data in the shared device system may be set to the first scheduled service period, which helps the first device determine the uplink and downlink transmission rhythm of the interfered link. The first scheduled service period may be a TWT SP or an R-TWT SP.

[0103] In some implementations, the uplink and downlink transmission rhythm of the interfered link within the first reserved service period is: on the interfered link, the interfered device performs uplink transmission within the first reserved service period. That is, when the first device or the second device sends data in the interfering system, the first device or the second device only performs uplink transmission in the original system (the system applying the wireless communication method of the embodiment of the present application) within the first reserved service period, thereby avoiding adjacent channel interference. It is worth noting that this uplink and downlink transmission rhythm is applicable to the interfered device in active mode.

[0104] In other implementations, the uplink and downlink transmission cadence of the affected link within the first reserved service period is as follows: on the affected link, the affected device distinguishes between uplink and downlink transmissions within different first reserved service periods. That is, when the first or second device transmits data in the interfering system, the first or second device performs uplink and downlink transmissions within different first reserved service periods within the original system, thereby ensuring data transmission and reception while avoiding adjacent channel interference. It is worth noting that this uplink and downlink transmission cadence is applicable to the affected device in PS mode.

[0105] In some alternative implementations, the uplink and downlink transmission cadence of the affected link during the first reserved service period is as follows: on the affected link, the affected device performs uplink transmission first, followed by downlink transmission, during the first reserved service period. That is, when the first or second device transmits data in the interfering system, the first or second device performs uplink transmission first, followed by downlink transmission, within the same first reserved service period in the original system. This ensures data transmission and reception while avoiding adjacent channel interference. Notably, this uplink and downlink transmission cadence also applies to affected devices in PS mode.

[0106] The third information may include one or more of the following information about the interfered link during the first scheduled service period: minimum time slot unit; uplink and downlink time slot ratio; uplink and downlink indication; and reverse operation indication, which may be used to indicate whether to change the transmission direction during the first scheduled service period. Based on the third information, the second device may determine the uplink and downlink transmission cadence during the first scheduled service period.

[0107] The first frame may be based on an indication of a negotiation process for a first reserved service period. As an example, the first frame may carry a first element, and the first element may be used to negotiate the first reserved service period. For example, if the first reserved service period is a TWT SP, the first frame may be a management frame for negotiating the TWT SP, the first element may be a TWT element, and the TWT element may include the third information.

[0108] Furthermore, the method shown in FIG4 may further include: within the first predetermined service period, the first device dynamically indicating to the second device the uplink and downlink transmission directions and / or the uplink and downlink transmission ratios. For example, in response to continuously changing interference, the first device may dynamically indicate to the second device the uplink and downlink transmission directions and / or the uplink and downlink transmission ratios within the first predetermined service period, thereby helping the uplink and downlink transmission rhythm of the second device adapt to the changing interference.

[0109] In some implementations, the interfered link can be aligned with the end point of the last time slot of the interfering system in the first scheduled service period, which helps to achieve synchronous transmission and reception of the interfered link and the interfering system.

[0110] In some implementations, the uplink and downlink transmission rhythm of the interfered link in the first predetermined service period does not affect the channel monitoring capability in the first predetermined service period.

[0111] In some implementations, the method shown in FIG4 may further include: within the first scheduled service period, the first device indicating to the second device information related to the next first scheduled service period. That is, the first device may explicitly indicate to the second device information related to the next first scheduled service period, thereby helping the second device to clarify the next first scheduled service period.

[0112] Furthermore, the management frame establishing the first scheduled service period may include a first mode field, which may be used to indicate whether the operating mode of the first scheduled service period is an explicit operating mode or an implicit operating mode. That is, when establishing the first scheduled service period, the first device and the second device may specify the operating mode using the first mode field in the management frame. If the operating mode is explicit, the first device may indicate to the second device, within the first scheduled service period, information regarding the next scheduled service period.

[0113] It should be noted that if the data transmission is not completed within the first scheduled service period, the data transmission will continue within the next first scheduled service period.

[0114] The above interference information is introduced below.

[0115] As an example, the interference information may include one or more of the following information at the subchannel / operating frequency band level: an indication of whether the subchannel / operating frequency band is affected by interference; the type of interference; the time when the interference started; the operating frequency band of the interfering system; the uplink and downlink transmission times of the interfering system; the total transmission time of the interfering system; the minimum time slot unit of the interfering system; and information related to periodic interference. Based on the interference information, the first device can identify the interfered subchannel / operating frequency band and the interference situation, thereby accurately determining interference coordination operation information.

[0116] In some implementations, the interference information can be reported by the second device. For example, when the second device is a non-access point site device in a Wi-Fi system, the second device can obtain interference in the shared device system and report it to the first device. Furthermore, the second device can carry the interference information in a first interference information frame (described in detail below) for reporting. As an example, the first interference information frame can include multiple interference information subfields, each of which can be used to carry interference information for a subchannel / operating frequency band.

[0117] In some implementations, the reporting of interference information can be triggered based on a third frame of the first device, where the third frame is used to instruct one or more second devices to report interference information. That is, the first device can send a trigger frame for interference information reporting to the second device to trigger the second device to report interference information. The third frame can be a first interference information trigger frame (described in detail below), which can include a first request field that can be used to indicate whether to request reporting of interference information.

[0118] It is worth noting that, based on the third type of interference coordination operation information, if data transmission is not completed within the first scheduled service period, data transmission will continue within the next first scheduled service period.

[0119] Frame structure

[0120] The structure of each frame described above is described in detail below. It is worth noting that the frame structure design in this application takes the interference of the Wi-Fi system by the shared device system as an example (Bluetooth is a shared device other system, and the parameter value is based on the Bluetooth interference characteristic as an example). It is worth noting that the structure and field meaning of each frame described below are only examples and are not specifically limited in this application.

[0121] First interference information frame

[0122] The first interference information frame may include a device type indication, the length of the Bluetooth Classic time slot, the minimum time unit of the subchannel-level interference information, an indication of whether the subchannel is available, the interference type, the interference start time, the operating frequency band of the interference system, the total transmission time of the interference system, the minimum time slot unit of the interference system, and periodic interference information. For ease of understanding, the first interference information frame is represented below by a co-located-device interference (CDI-info) frame.

[0123] As an example, as shown in FIG5 , the CDI-info frame may be designed based on the architecture of the action frame.

[0124] The medium access control (MAC) header field of the CDI-info frame may include a high throughput (HT) control field (not shown in the figure), totaling 32 bits. The first two bits of the HT control field (not shown in the figure) are both 1, indicating that the HT control is a high-efficiency (HE) variant. The remaining bits of the HT control field are the A-control field, see Figure 5, which is 30 bits long. The A-control field may include a device link type field, which is 6 bits long. The control ID field uses the currently reserved bit, which is 6. The control information field may include the following subfields: The device type subfield indicates whether the current device is a multi-link device or a single-link device. If it is 0, it indicates that the device is a single-link device, and if it is 1, it indicates that the device is a multi-link device. The remaining bits are reserved bits, which satisfy the HT control requirement of 4 bytes.

[0125] The frame body field of the CDI-info frame may include category, action, and interference-info subfields, wherein the category and action subfields may be used to indicate the type of the CDI-info frame.

[0126] category subfield

[0127] The category field can take any reserved value between 30 and 125, indicating that the action frame is a newly defined shared device interference information feature frame. Alternatively, the value of the category field can be selected from existing category categories, such as an action frame in the Quality of Service (QoS) category, where the category value of the QoS category is 1.

[0128] action subfield

[0129] When the category field is between 30 and 125, the action frame belongs to a newly defined category. A value of 0 indicates that the action frame is a CDI-info frame. When the category is an already defined category, such as QoS, the action field value can be a reserved value in the QoS action field, which ranges from 7 to 255. In this case, an action value of 7 is selected to indicate that the action frame is a CDI-info frame.

[0130] interference-info subfield

[0131] This field is the characteristic element of other system interference information, including a description of the characteristics of the shared device interference information. The duration unit subfield is set to 2 bits, with a value of 0 to 3. When this subfield is 0, it indicates that the minimum time slot unit is 32us. Taking Bluetooth as a shared device other system as an example, a value of 1 indicates that the minimum time slot unit is 625us. The other values ​​are reserved. The padding subfield is used to supplement the frame length so that the frame meets the integer byte size. Each CDI-info frame can contain multiple interference-information (inter-info) subfields (i.e., the interference information subfields mentioned above), each subfield represents the interference information characteristics of a other system. Each inter-info field can be composed of link ID, subchannel ID, whether it is interfered (is interfered), type (type), start time (start time), duration (duration), frequency (frequency), and periodicity (periodicity) subfields.

[0132] The link ID subfield indicates the link ID. For single-link devices, the link ID field is not required. The subchannel ID subfield indicates the ID of the subchannel whose service period is negotiated by TWT. The is interfered subfield indicates whether the subchannel is interfered with. A value of 0 indicates that the subchannel is available, and a value of 1 indicates that the subchannel is unavailable. The type subfield indicates the type of interference information, with a value of 0 to 3. A value of 0 indicates that the interference information is periodic shared-device interference, and a value of 1 indicates that the interference information is non-periodic shared-device interference. Other values ​​are reserved. The start time subfield indicates the start time of the shared-device interference for this link / subchannel. For example, the start time of the first R-TWT SP scheduled by R-TWT can be consistent with this time point. The duration subfield indicates the total duration of the shared-device interference service of other systems, with a value of 0 to 15, where the total duration is equal to the selected value multiplied by the minimum time slot unit. The frequency subfield indicates the operating frequency band of the interfering system, with a value of 0 to 7, indicating an operating frequency band with different interference information characteristics. The periodicity subfield is optional and is enabled when the type subfield is 0. The periodicity subfield may include a period unit, a period duration, a period interval, and an uplink / downlink (U / D) ratio subfield.

[0133] The period unit subfield indicates the minimum time slot unit for periodic interference, with a value ranging from 0 to 3. A value of 0 indicates a minimum time slot unit of 32 μs. For example, using Bluetooth as a shared device, a value of 1 indicates a minimum time slot unit of 625 μs. Other values ​​are reserved. The period duration subfield indicates the total duration of the periodic interference information, which is equal to the value multiplied by the period minimum time slot unit. The period interval subfield indicates the time interval between adjacent periodic interference events, which is equal to the value multiplied by the minimum time slot unit. The U / D ratio subfield indicates the ratio of time when the shared device system transmits interference to time when it receives interference, with a value ranging from 0 to 7, indicating the different uplink / downlink transmission ratios of Wi-Fi. Taking Bluetooth as a shared device as an example, the values ​​and meanings of the U / D ratio subfield are shown in Table 1.

[0134] For example, the meaning of each of the above-mentioned time subfields can be shown in Figure 6. Where N is the value of the period duration subfield, u is the value of the period interval subfield, and n is the value of the duration subfield. The duration of interference, the period interval of interference, and the period duration of interference can be calculated using the method shown in Figure 6.

[0135] In conjunction with Table 1, the U / D ratio subfield and duration subfield are described in detail below, taking the classic Bluetooth service for the enhanced synchronous connection oriented (eSCO) link as an example. For example, the eSCO service consists of a total of 12 Bluetooth time slots, of which two time slots are transmission services, four time slots are retransmission windows, and the remaining six time slots are reserved windows. In the CDI-info frame, the interference-info subfield contains two inter-infos. The first 6 time slots are represented as the first inter-info: using the periodic field, N=6, u=0, n=2. The last 6 time slots (not involving the periodic field) are represented as the second inter-info: is interfered field=0, duration field=6.

[0136] Table 1 U / D ratio subfield values ​​and meanings

[0137] First interference information trigger frame

[0138] For ease of understanding, the term "trigger"-CDI is used below to represent the first interference information trigger frame.

[0139] As shown in Figure 7, the trigger-CDI frame can add a request (REQ) CDI-info subfield (i.e., the first request field described above) to the user information list field in the trigger frame to request the non-AP STA to send interference information characteristics. If REQ CDI-info = 0, it indicates that the non-AP STA is not requested to send interference information characteristics; if REQ CDI-info = 1, it indicates that the non-AP STA is requested to send interference information characteristics.

[0140] TWT element

[0141] As mentioned above, the first frame can be indicated by the negotiation process of TWT SP or R-TWT SP between AP and non-AP STA, and the first frame can be a management frame for negotiating TWT SP or R-TWT. Exemplarily, the TWT element in the management frame can be as shown in Figure 8A. The wake-up duration unit subfield in the control field of the TWT element can be set to 2 bits, with a value of 0 to 3. 0 indicates that the minimum time slot unit is 256us, and 1 indicates that the minimum time slot unit is 1TU. Taking Bluetooth as a shared device system as an example, 2 indicates that the minimum time slot unit is 625us, and the other values ​​are reserved.

[0142] When the interference coordination operation information is used to indicate that the interfered subchannel / working frequency band of the interfered device is not working during the unavailable time, as shown in Figure 8B, a TWT subchannel information field can be added to the TWT element. This field is the subchannel information element, which includes link ID, subchannel ID, subchannel frequency, type, unavailable time, whether it is the main channel (isMaster), and padding subfields. The link ID subfield indicates the ID of the link; the subchannel ID subfield indicates the ID of the subchannel that works in the service period after TWT negotiation; the subchannel frequency subfield indicates the working frequency band of the subchannel; the type subfield indicates the type of interference information and has a value of 0 to 3. When the value is 0, it means that the interference information is periodic common equipment interference, and when it is 1, it means that the interference information is non-periodic common equipment interference. The other values ​​are reserved; the unavailable time subfield indicates the unavailable time of the non-AP STA subchannel, and the total unavailable time is equal to the value taken multiplied by the minimum time slot unit; the IsMaster subfield indicates whether the subchannel is the main channel. When the value is 1, it is the main channel, otherwise it is the auxiliary channel; the padding subfield is used to supplement the frame length so that the frame meets the integer byte size.

[0143] When the interference coordination operation information is used to indicate that all or part of the transmission or reception resources on the interfered link are transferred to the undisturbed link, and the interfered link and the undisturbed link are determined by the interference information, as shown in FIG8C , a TWT information field may be added to the TWT element. This field is a TWT information element, with a new U / D ratio subfield, an uplink / downlink (UL / DL) indication subfield, a reverse direction grant (RDG) subfield, and a padding subfield. The U / D ratio subfield indicates the time slot ratio of uplink transmission and downlink transmission that Wi-Fi needs to meet, and the value ranges from 0 to 7. 0 means no business. Taking Bluetooth as a shared device, other systems are shown in Table 1 as an example. The UL / DL indication subfield indicates whether uplink or downlink transmission is to be performed. If the value of this subfield is 1, uplink transmission is to be performed, otherwise downlink transmission is to be performed. The RDG subfield indicates whether the reverse transmission operation within the SP is to be performed. If the value is 1, reverse transmission is to be performed, otherwise reverse transmission is not to be performed. The padding subfield is used to supplement the frame length so that the frame meets the integer byte size.

[0144] First link indication frame

[0145] For ease of understanding, the link-indicator frame is used below to represent the first link indication frame. As shown in Figure 9, multiple link indication information is carried in the user information field of the link-indicator frame. The duration unit subfield can be used to indicate the minimum time slot unit. The duration unit subfield is set to 2 bits, with a value of 0 to 3. Taking 0 as an example, the minimum time slot unit is 32us. Taking Bluetooth as a shared system, 1 indicates that the minimum time slot unit is 625us, and the other values ​​are reserved. The link information subfield can be used to indicate the distribution of the number of spatial streams of each link. The link info subfield can contain multiple subfields, namely link ID, NSS, link frequency, timer, Max NSS, Max MCS, and Max PPDU size.

[0146] Among them, the link ID subfield can indicate the ID of the link. The NSS subfield can indicate the number of available spatial streams of the link. The link frequency subfield can indicate the operating frequency band of the link. The timer subfield can indicate the spatial stream switching time, which can indicate 0 to 128 time slots, and 129 to 255 are reserved. When the timer time ends, the original spatial stream setting is automatically restored. Here, the maximum TXOP time in 802.11-2020 is 4.096ms, which is 128 time slots (one time slot is 32us). Max NSS can indicate the maximum number of spatial streams. Max MCS can indicate the maximum MCS limit. Max PPDU size can indicate the maximum PPDU size limit. The padding subfield can be used to supplement the frame length so that the frame meets the integer byte size.

[0147] MU-RTS frame

[0148] As previously mentioned, the spatial stream distribution adjustment process can also be implemented using the MU-RTS control frame. A link information element (Link Info Element) can be added to the User Info List field of the MU-RTS to carry spatial stream distribution information. As shown in Figure 10, the User Info List field can include the Link ID, NSS, Link Frequency, Timer, Duration Unit, Max MCS, Max NSS, and Max PPDU Size subfields. The meaning of each subfield can be found in the First Link Indication Frame and will not be further described here.

[0149] R-TWT request type field

[0150] As mentioned above, the non-access point site device and the access point device establish R-TWT through a management frame, and a new subfield can be added to the management frame to indicate implicit mode or explicit mode. As shown in Figure 11, an implicit subfield (i.e., the first mode field mentioned above) can be added to the request type subfield of the broadcast TWT parameter set field of the TWT element to indicate implicit mode or explicit mode. If the implicit subfield value is 0, it can represent an explicit working mode, and the access point device explicitly informs the non-access point site device of the next TWT time period when the data frame is exchanged; if the implicit subfield value is 1, it can indicate that the R-TWT request is implicit, and the non-access point site device calculates the next round of TWT service period, and the access point device will not tell the non-access point site device the next round of TWT service period.

[0151] The following is an analysis of the frame overhead of the wireless communication method provided in the embodiment of the present application.

[0152] Frame overhead for interference information reporting

[0153] In the shared device interference scenario, since non-access point site devices need to report shared device interference information to the access point device, the frame interaction overhead will increase. We quantitatively analyzed the time consumption of the frame interaction process in this scenario. Assuming that all control and management frames use 20MHz bandwidth, according to the 802.11ax standard, the minimum MCS rate is 4.3Mbps (NSS=1, protection interval is 0.8us). A classic Bluetooth time slot is 625us, and a beacon period T beancon Set to 100ms (160 Bluetooth time slots). In order to better coordinate interference with common devices, the time period for Wi-Fi to perform interference coordination in Example 1 (i.e., R-TWT SP time) is set to an integer multiple of the Bluetooth time slot (625us). The frame spacing of each control frame is the short interframe space (SIFS) with a length of 16us. Consider the following two interference information reporting scenarios and calculate the frame overhead respectively.

[0154] (1) Assuming that each reported information contains N interference information, and the interference information is periodic interference, the frame length of a CDI-info is The ceil(·) function is a round-up function. The padding subfield in the frame is used to ensure that the frame length meets the integer byte size.

[0155] When N=5, the length of a CDI-info frame is 54 bytes. Based on the above assumed transmission rate, the transmission time of an interference information report is

[0156] (2) The present invention also designs that the access point device sends a trigger-CDI frame to the non-access point site device to trigger the non-access point site device to report interference information. Considering that the report is triggered by the access point device, the trigger-CDI frame length is 34 bytes, and the transmission time is obtained as

[0157] When N=5, the total time overhead of the reporting process triggered by the access point device is: T T-CDI +T CDI +T SIFS =179.7μs.

[0158] Frame overhead of the link-indicator frame

[0159] In the second strategy, the AP MLD sends a link-indicator frame to the non-AP MLD to indicate the current working frequency bands and NSS spatial stream sizes of multiple links. Multiple link indication information is carried in the link-indicator frame, and the frame interaction overhead will increase. We conducted a quantitative analysis of the time consumption of the frame interaction process in this scenario. Assuming that all control / management frames use 20MHz bandwidth, according to the 802.11ax standard, the minimum MCS rate is 4.3Mbps (NSS=1, protection interval is 0.8us). A classic Bluetooth time slot is 625us, and a Beacon period T beacon Set to 100ms (160 Bluetooth time slots). The interframe spacing of each control frame is SIFS and the length is 16us.

[0160] Let M be the number of links of Wi-Fi devices, and the frame length of a link-indicator is approximately Bytes. Based on the transmission rate assumption above, the length of a link-indicator frame is 34 bytes, and its transmission time is (Take M=4 as an example). ACK is usually 6 bytes and its transmission time is It can be concluded that the total time overhead of the link indication process in this scenario is: T LinkIndicator +T ACK +T SIFS =90.5μs.

[0161] As can be seen, the frame overhead for each shared device interference information report and link indication is in the microsecond range, while Wi-Fi data transmission typically occurs in the millisecond range. Therefore, the actual transmission latency is significantly shorter than the Wi-Fi data transmission time. The above analysis of frame interaction time is also applicable to other scenarios.

[0162] Below, taking the interference of the Wi-Fi system by the shared device system as an example, and the shared device system taking the Bluetooth system as an example, in combination with Examples 1 to 4, the wireless communication method in the embodiment of the present application is introduced by way of example. For example, the first device in Examples 1 to 4 is an AP or non-AP in the Wi-Fi system, the second device is a non-AP or AP in the Wi-Fi system, and the interfered device is a non-AP. In the following embodiments, the non-AP STA in the Wi-Fi system and the master device (master) of the Bluetooth system are the same device. Among them, the multi-link takes two links as an example, link1 is a 5GHz link, link2 is a 2.4GHz link, and the Bluetooth system operates in the 2.4GHz frequency band. It is worth noting that the wireless communication method in the embodiment of the present application is also applicable to links in other frequency bands (for example, 6GHz), other numbers of links (for example, 3), and other shared device systems (for example, other non-Wi-Fi systems), and this application does not limit this.

[0163] Example 1

[0164] In Example 1, the interference coordination operation information is used to indicate that the interfered sub-channel / working frequency band of the interfered device does not operate during the unavailable time. For example, in Example 1, the wireless communication method of the embodiment of the present application can also be referred to as "sub-channel co-device interference coordination method based on R-TWT". It is worth noting that in Example 1, there are two links (link1, link2) between the non-access point site device and the access point device. Among them, link2 has co-device interference with other systems, the working bandwidth of link2 is 80MHz, and link2 contains 4 sub-channels. Among them, sub-channel 1 is the main channel, and sub-channel 4 is subject to co-device interference.

[0165] As shown in Figure 12, the AP receives a CDI-info frame reported by a non-AP STA. The CDI-info frame includes subchannel-level interference information characteristics (see Figure 5). Based on this, the AP can determine that the subchannel affected by shared device interference is subchannel 4 and its subchannel interference information. Therefore, the AP can set the R-TWT service period to the time when data transmission on the uninterrupted subchannel is performed.

[0166] Continuing with Figure 12, a non-AP STA and the AP send a management frame containing a TWT element to negotiate the R-TWT service period. A new sub-channel information field has been added to the TWT element, which contains the link ID, sub-channel ID, sub-channel operating frequency band, interference type, sub-channel unavailable time, and whether it is the main channel subfield. Based on the sub-channel information field, it can be indicated that sub-channel 4 is not operational during the R-TWT service period, while the remaining sub-channels operate normally.

[0167] After the negotiation is completed, R-TWT is established (the channel access rules inside and outside the R-TWT SP can be as described above), and the non-AP STA transmits data with the access point device within the specified time according to the negotiated R-TWT plan.

[0168] When an R-TWT SP arrives, the AP sends a trigger frame to the non-AP STA, triggering the non-AP STA to transmit data on the sub-channels not affected by shared device interference. Sub-channel 4, which is affected by shared device interference, is inactive. Outside the R-TWT SP, the non-AP STA goes into sleep mode to reduce energy consumption.

[0169] Based on the first embodiment, when the Wi-Fi system is interfered with by a shared device system, the interfered sub-channel does not operate, while the uninterrupted sub-channel continues to operate, which can effectively reduce the impact of the shared device interference on the data transmission of the Wi-Fi system.

[0170] Example 2

[0171] In the second embodiment, under the multi-link framework, the AP MLD in the Wi-Fi system decides whether to trigger spatial stream adjustment and recovery based on the co-device interference information and traffic reported by the non-AP MLD or the non-AP MLD based on the co-device interference information, and transfers data transmission from the interfered link to other links to avoid co-device interference. Therefore, in the second embodiment, the interference coordination operation information is used to instruct all or part of the transmission or reception resources on the interfered link to be transferred to the undisturbed link, and the interfered link and the undisturbed link are determined by the interference information. For example, in the second embodiment, the wireless communication method of the embodiment of the present application can also be referred to as "co-device interference coordination method based on full spatial stream adjustment". It is worth noting that in the second embodiment, the Wi-Fi system includes link1 (2.4GHz) and link2 (5GHz) as an example, where link2 has co-device interference with other systems. The initial spatial stream distribution is NSS = 1 for the 2.4GHz link and NSS = 1 for the 5GHz link.

[0172] As shown in Figure 13A, the AP MLD sends a link-indicator frame on the 2.4 GHz link to the non-AP MLD, indicating that the NSS of the 2.4 GHz link is 0 and the NSS of the 5 GHz link is 2. This indicates that the 2.4 GHz link is inoperative and all Wi-Fi services are transmitted on the 5 GHz link. Upon receiving the link-indicator from either link 2 or link 1, the non-AP MLD switches all NSSs from link 2 to link 1. Specifically, link 1's NSS becomes 2, improving link 1's throughput. Link 2's NSS becomes 0, preventing the non-AP MLD from receiving or transmitting any data from the AP MLD on link 2, thus preventing co-device interference between link 2 and other systems. Spatial stream distribution can be restored to its initial state based on a timer. The timer duration indicates the operating duration after the adjustment. When the non-AP MLD receives an ACK from the non-AP MLD in response to the link-indicator frame, both parties set a timer. After the timer is set, the timer begins counting down. When the timer reaches zero, the timing stops and the original spatial stream settings on each link are automatically restored. According to the settings of this embodiment, after the timer is reduced to 0, the spatial stream of the 2.4GHz link is restored to NSS=1, and the spatial stream of the 5GHz link is restored to NSS=1.

[0173] Alternatively, as shown in Figure 13B , the non-AP MLD can send a link-indicator frame to the AP MLD on the 2.4 GHz link, indicating that the NSS of the 2.4 GHz link is 0 and the NSS of the 5 GHz link is 2. This indicates that the 2.4 GHz link is inoperative and all Wi-Fi services are transmitted on the 5 GHz link. The remaining process is similar to that in Figure 13A and is not further described here.

[0174] It is worth noting that, referring to FIG. 13C , the link-indicator frame mentioned above can be replaced by a MU-RTS frame, which will not be described in detail here.

[0175] It is worth noting that this embodiment uses RTS / CTS to perform TXOP reservation on the 5 GHz link. In practice, multiple access methods can be used, and there is no restriction on the access mechanism.

[0176] Continuing with Figure 13D , the spatial stream distribution on each link can also be restored based on the link-indicator frame. The non-AP MLD sends a link-indicator frame to the AP MLD on link2, indicating the NSS values ​​on multiple links to restore the original spatial streams. After receiving the link-indicator frame from link2, the non-AP MLD restores the original spatial stream settings on each link, i.e., the NSS on link1 is 1 and the NSS on link2 is 11.

[0177] Based on the second embodiment, by dynamically transferring the transmission of the interfered Wi-Fi link to other links, it helps to avoid interference while ensuring that service transmission requirements are met.

[0178] Example 3

[0179] In embodiment three, the interference coordination operation information can be used to indicate that all or part of the transmission or reception resources on the interfered link are transferred to the undisturbed link, and the interfered link and the undisturbed link are determined by the interference information. For example, in embodiment three, the wireless communication method of the embodiment of the present application can also be referred to as "co-device interference coordination method based on partial adjustment of spatial streams". It is worth noting that embodiment three also takes the Wi-Fi system including link1 (2.4GHz) and link2 (5GHz) as an example. The initial spatial stream distribution is NSS=2 for the 2.4GHz link and NSS=1 for the 5GHz link.

[0180] Referring to Figure 14A , the AP MLD sends a link-indicator frame to the non-AP MLD on the 2.4 GHz link, indicating that the NSS of the 2.4 GHz link is currently set to 1 and the NSS of the 5 GHz link is currently set to 2. It also sets a timer to indicate the duration of the spatial stream number adjustment. That is, during the spatial stream number adjustment process, the 2.4 GHz band link always retains at least one spatial stream to perform channel monitoring on the 2.4 GHz link. Wi-Fi data services are all transmitted on the 5 GHz link. When the AP MLD receives the ACK response from the non-AP MLD to the link-indicator frame, both parties set a timer. After the setting is completed, the timer begins to count down. When the timer reaches zero, it stops counting and automatically restores the original spatial stream settings on each link. According to the settings of this embodiment, after the timer is decremented to 0, the spatial stream of the 2.4 GHz link is restored to NSS = 2, and the spatial stream of the 5 GHz link is restored to NSS = 1.

[0181] Alternatively, as shown in Figure 14B , the non-AP MLD can send a link-indicator frame to the AP MLD on the 2.4 GHz link, indicating that the NSS of the 2.4 GHz link is 1 and the NSS of the 5 GHz link is 2. A timer is set to indicate the duration of the spatial stream number adjustment. The remaining process is similar to that in Figure 14A and is not further described here.

[0182] In this embodiment, RTS / CTS is used to perform TXOP reservation on the 5 GHz link. In practice, multiple access methods can be used, and there is no restriction on the access mechanism.

[0183] Based on the third embodiment, by dynamically transferring the transmission portion of the interfered Wi-Fi link to other links, it helps to avoid interference while ensuring that service transmission requirements are met.

[0184] Example 4

[0185] In the fourth embodiment, the interference coordination operation information can be used to instruct the interfered device to transmit and receive synchronously with the interfering system on the interfered link, or to make the interfered device not work on the interfered link when the interfering system is transmitting and receiving. For example, in the fourth embodiment, the wireless communication method of the embodiment of the present application can also be referred to as "interference coordination method for simultaneous transmission and reception of common devices based on R-TWT". It is worth noting that in the fourth embodiment, the interfered link is taken as an example of a 2.4 GHz link.

[0186] In the fourth embodiment, a management frame containing a TWT element and a newly added Implicit subfield is sent between a non-AP STA and an AP to negotiate the R-TWT service period. The TWT element includes a minimum time slot unit subfield, an uplink and downlink indication subfield, an uplink and downlink time slot ratio subfield, and a subfield for performing a reverse operation, so that the access point device can control the uplink and downlink transmission rhythm of Wi-Fi on the interference link to avoid interference between common devices.

[0187] It is worth noting that this embodiment does not require strict alignment of the start and end times of Wi-Fi data packets sent / received with other systems of the shared device. However, it is necessary to ensure that when the Bluetooth master device sends data to the slave device (slave), Wi-Fi performs uplink transmission or does not perform data transmission to avoid interference with the shared device; when the Bluetooth slave device sends data to the master device, Wi-Fi performs downlink transmission or does not perform data transmission to avoid interference with the shared device.

[0188] The following describes the different working modes of non-access point site devices in R-TWT.

[0189] (1) When the non-AP STA is in active mode, the non-AP STA is always awake. As shown in Figure 15A, the AP will make decisions and adjustments to the data transmission on the Wi-Fi side based on the interference information received from other systems, and conduct R-TWT negotiation with the non-access point station device on the decided R-TWT time. At this time, the R-TWT SP is the time when the Bluetooth master device sends data to the slave device, and the uplink and downlink indication subfield of the TWT element field is set to 1 when the AP and the non-AP STA conduct R-TWT negotiation, indicating that the Wi-Fi uplink transmission is performed within the TWT service period. The uplink and downlink indication only limits the direction of data transmission and does not affect the channel monitoring capability. Since Bluetooth uses frequency hopping communication, it will avoid the Wi-Fi working channel of the same device, but there is still adjacent channel interference. In addition, the Bluetooth working bandwidth is relatively small at 1MHz. Without loss of generality, when Bluetooth is working, the energy detected by the Wi-Fi channel will be lower than the access threshold of enhanced distributed channel access (EDCA), so there is a greater probability of obtaining access opportunities within this SP. However, Wi-Fi data decoding requires lower interference energy. Therefore, although the channel can be accessed at present, it cannot meet the needs of AP sending and STA receiving. Therefore, during this period, the STA cannot successfully perform downlink transmission.

[0190] When the R-TWT SP arrives, the non-AP STA competes for the channel for uplink data transmission. For example, if the link is idle within the distributed inter-frame spacing (DIFS) after looking back, it indicates that the channel has been successfully accessed and data transmission has begun. This embodiment does not require the start and end time of the transmission / reception of the Wi-Fi data packet and the shared device Bluetooth system to be strictly aligned, but requires that the Wi-Fi uplink data frame be aligned with the end point of the last time slot occupied by the Bluetooth master device to send a data frame to the slave device, so that the ACK frame sent by the AP to the non-AP STA and the null frame replied by the Bluetooth slave device to the master device occupy the same time slot to achieve synchronous transmission and reception to avoid interference with shared devices. If the end time of the Wi-Fi uplink data transmission is earlier than the end point of the last time slot occupied by the Bluetooth master device to send data to the slave device, padding can be used for additional alignment; if the data in the R-TWT SP has not been transmitted, data transmission can continue in the next R-TWT SP. Outside the R-TWT service period, the AP can compete for the channel for downlink data transmission according to the Wi-Fi service requirements. When exchanging data frames, the newly added subfield is carried to indicate the Wi-Fi transmission direction and explicitly inform the next TWT cycle through the designed R-TWT explicit working mode.

[0191] (2) When a non-AP STA is in PS mode, it sleeps outside the SP. The AP makes decisions and adjusts Wi-Fi data transmission based on the received interference information from other shared devices and negotiates the determined R-TWT time with the non-AP STA. If data transmission within the R-TWT SP is not completed, data transmission continues within the next R-TWT SP. In this embodiment, two transmission control methods are designed.

[0192] ① Distinguish Wi-Fi's uplink and downlink transmissions in different service cycles, as shown in Figure 15B. Classic Bluetooth follows a send-receive mechanism, and follows the principle that the master device first sends a data frame to the slave device, and then the slave device sends a reply frame to the master device. In order to avoid adjacent channel interference, the non-AP STA reports the common device interference information and completes the negotiation of the service cycle with the AP. Then, through the designed uplink and downlink indication subfield, it instructs Wi-Fi to first perform uplink transmission in the first service cycle and then perform downlink transmission in the second service cycle. When exchanging data frames, the newly added subfield is carried to indicate the Wi-Fi transmission direction, uplink and downlink ratio, etc. through the designed R-TWT explicit working mode, and explicitly informs the next TWT cycle. When the first SP of R-TWT arrives, the non-AP STA competes for the channel for uplink data transmission. Looking back, the link is idle within DIFS, indicating that the channel has been successfully accessed and data transmission has begun. This embodiment does not require strict alignment of the start and end times of Wi-Fi data packets and the shared device Bluetooth system's transmission / reception. However, it does require alignment of Wi-Fi uplink data frames with the end point of the last time slot occupied by the Bluetooth system. This ensures that the ACK frame sent by the AP to the non-AP STA and the null frame replied by the Bluetooth slave device to the master device occupy the same time slot, thereby achieving synchronous transmission and reception and avoiding shared device interference. If the end time of Wi-Fi uplink data transmission is earlier than the end point of the last time slot occupied by the Bluetooth master device to the slave device, padding is used for additional alignment. If data transmission within the R-TWT SP is not completed, data transmission continues within the next R-TWT SP. In the second SP, the AP competes for the channel to send Wi-Fi downlink data to the non-AP STA.

[0193] ② In a service cycle, uplink transmission is performed first, followed by downlink transmission, as shown in Figure 15C. The designed minimum time slot unit subfield, uplink and downlink indication subfield, uplink and downlink time slot ratio subfield, and reverse operation subfield indicate that the non-AP STA needs to perform reverse operation and the uplink and downlink transmission time slot ratio within this service cycle. When the Bluetooth master device sends data to the slave device, Wi-Fi performs uplink transmission; when the Bluetooth slave device sends data to the master device, Wi-Fi performs downlink transmission to avoid interference between shared devices. When the R-TWT SP arrives, the non-AP STA competes for the channel for uplink data transmission. Looking back, if the link is idle within DIFS, it indicates that the channel has been successfully accessed and data transmission begins. This embodiment does not require that the start and end times of the transmission / reception of Wi-Fi data packets and the shared device Bluetooth system be strictly aligned, but requires that the Wi-Fi uplink data frame be aligned with the end point of the last time slot occupied by the Bluetooth system, so that the ACK frame sent by the AP to the non-AP STA and the null frame replied by the Bluetooth slave device to the master device occupy the same time slot, and perform downlink transmission according to the reverse operation instruction without the need to re-compete for the channel, so as to achieve synchronous transmission and reception to avoid interference between shared devices. If the end time of the Wi-Fi uplink data transmission is earlier than the end point of the last time slot occupied by the Bluetooth master device to the slave device data transmission, padding is used for additional alignment; if the data transmission in the R-TWT SP is not completed, the data transmission will continue in the next R-TWT SP. When exchanging data frames, the newly added subfield is carried to indicate the Wi-Fi transmission direction, uplink and downlink ratio, etc. through the designed R-TWT explicit working mode, and explicitly inform the next TWT cycle.

[0194] It is worth noting that, in the fourth embodiment, if the data transmission in the R-TWT SP is not completed, the data transmission will continue in the next R-TWT SP.

[0195] Based on the fourth embodiment, by controlling the uplink and downlink transmission time of the Wi-Fi device, it helps to ensure that the interfered link of the Wi-Fi system obtains more transmission opportunities while avoiding interference.

[0196] Interference information reporting

[0197] The reporting of the interference information in the above-mentioned first to fourth embodiments may be as shown in FIG. 16A to FIG. 16C .

[0198] As shown in Figure 16A , after a non-AP device detects interference from other shared-device systems and successfully competes for a channel, it can send a CDI-info frame to the AP device to report the interference information from other shared-device systems. Upon receiving the CDI-info frame, the AP device sends an ACK frame to the non-AP device to confirm the reception of the CDI-info frame.

[0199] As shown in Figure 16B , an access point device can send a trigger-CDI frame to a non-AP site device, triggering the non-AP site device to report shared device interference information. The trigger-CDI frame contains a REQ CDI-info field, indicating whether the non-AP site device is requested to send interference information. After receiving the trigger-CDI, the non-AP site device sends a CDI-info frame to the access point device, reporting interference information about other communication systems in the shared device. Upon receiving the CDI-info frame, the access point device sends an ACK frame to the non-AP site device for confirmation.

[0200] As shown in Figure 16C , the access point device trigger reporting method can be extended to multi-user scenarios. The access point device can send a trigger-CDI frame to multiple non-AP site devices, triggering them to report shared device interference information. After receiving the trigger-CDI, the non-AP site devices send a CDI-info frame to the access point device to report interference information from other communication systems in the shared device. After receiving the CDI-info frame, the access point device sends an ACK frame to the multiple non-AP sites for confirmation.

[0201] The method embodiments of the present application are described in detail above, and the device embodiments of the present application are described in detail below. It should be understood that the description of the method embodiments corresponds to the description of the device embodiments, so for parts not described in detail, reference can be made to the above method embodiments.

[0202] Figure 17 is a schematic diagram of the structure of a communication device provided in one embodiment of the present application. Referring to Figure 17 , communication device 1700 is a first device and includes a transmitting module 1710. Transmitting module 1710 is configured to transmit a first frame to a second device based on interference information. The first frame may indicate interference coordination information for one or more links and / or one or more subchannels / operating frequency bands.

[0203] In an embodiment of the present application, the above-mentioned communication device 1700 can be used to execute some or all of the method steps executed by the first device in the above-mentioned method embodiment. For example, the communication device 1700 can be used to execute some or all of the method steps executed by the first device in the scheme introduced in conjunction with Figures 4 to 16 above. The communication device 1700 includes units or modules for executing the method steps corresponding to the aforementioned Figures 4 to 16. The method flow has been described in detail in the aforementioned embodiment. The modules in this embodiment have the same functions or perform the same steps, which will not be repeated here. However, as those skilled in the art should know, the text descriptions corresponding to the aforementioned Figures 4 to 16 can be introduced into this embodiment and correspond to the modules in the communication device 1700.

[0204] Figure 18 is a schematic diagram of the structure of a communication device provided in another embodiment of the present application. Referring to Figure 18 , communication device 1800 is a second device and includes a receiving module 1810. Receiving module 1810 is configured to receive a first frame transmitted by a first device based on interference information. The first frame may indicate interference coordination information for one or more links and / or one or more subchannels / operating frequency bands.

[0205] In an embodiment of the present application, the above-mentioned communication device 1800 can be used to execute some or all of the method steps executed by the second device in the above-mentioned method embodiment. For example, the communication device 1800 can be used to execute some or all of the method steps executed by the second device in the scheme introduced in conjunction with Figures 4 to 16 above. The communication device 1800 includes a unit or module for executing the method steps corresponding to the aforementioned Figures 4 to 16. The method flow has been described in detail in the aforementioned embodiment. The modules in this embodiment have the same functions or perform the same steps, which will not be repeated here. However, as those skilled in the art should know, the text descriptions corresponding to the aforementioned Figures 4 to 16 can be introduced into this embodiment and correspond to the modules in the communication device 1800.

[0206] FIG19 is a schematic diagram of the structure of a communication device provided in an embodiment of the present application. The dotted lines in FIG19 indicate that the unit or module is optional. Apparatus 1900 may be used to implement the method described in the above method embodiment. Apparatus 1900 may be a chip or a communication device.

[0207] The device 1900 may include one or more processors 1910. The processor 1910 may support the device 1900 to implement the method described in the above method embodiment. The processor 1910 may be a general-purpose processor or a special-purpose processor. For example, the processor may be a central processing unit (CPU). Alternatively, the processor may be another general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, etc. The general-purpose processor may be a microprocessor or the processor may be any conventional processor, etc.

[0208] The apparatus 1900 may further include one or more memories 1920. The memories 1920 store programs that can be executed by the processor 1910, causing the processor 1910 to perform the methods described in the above method embodiments. The memories 1920 may be independent of the processor 1910 or integrated into the processor 1910.

[0209] The apparatus 1900 may further include a transceiver 1930. The processor 1910 may communicate with other devices or chips via the transceiver 1930. For example, the processor 1910 may transmit and receive data with other devices or chips via the transceiver 1930.

[0210] The present invention also provides a computer-readable storage medium for storing a program. The computer-readable storage medium can be applied to the communication device provided in the present invention, and the program enables a computer to execute the method performed by the communication device in each embodiment of the present invention.

[0211] The present application also provides a computer program product. The computer program product includes a program. The computer program product can be applied to the communication device provided in the present application, and the program causes a computer to execute the method performed by the communication device in each embodiment of the present application.

[0212] The embodiments of the present application also provide a computer program. The computer program can be applied to the communication device provided in the embodiments of the present application, and the computer program enables a computer to execute the method executed by the communication device in each embodiment of the present application.

[0213] It should be understood that the terms "system" and "network" in this application can be used interchangeably. In addition, the terms used in this application are only used to explain the specific embodiments of this application and are not intended to limit this application. The terms "first", "second", "third", and "fourth" in the specification and claims of this application and the accompanying drawings are used to distinguish different objects rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0214] In the embodiments of the present application, a "field" may also be referred to as a "field," a "subfield," or a "subfield." A field may occupy one or more bytes (byte / octet), or a field may occupy one or more bits (bit).

[0215] In the embodiments of this application, the term "indication" may refer to a direct indication, an indirect indication, or an indication of an association. For example, "A indicates B" may refer to a direct indication of B, e.g., B can obtain information through A; it may refer to an indirect indication of B, e.g., A indicates C, e.g., B can obtain information through C; or it may refer to an association between A and B.

[0216] In the embodiment of the present application, "B corresponding to A" means that B is associated with A and B can be determined based on A. However, it should be understood that determining B based on A does not mean determining B based solely on A, but B can also be determined based on A and / or other information.

[0217] In the embodiments of the present application, the term "corresponding" may indicate a direct or indirect correspondence between the two, or an association relationship between the two, or a relationship between indication and indication, configuration and configuration, etc.

[0218] In the embodiments of the present application, "pre-defined" or "pre-configured" may be implemented by pre-storing corresponding codes, tables, or other methods that can be used to indicate relevant information in devices (e.g., including APs and STAs). The present application does not limit the specific implementation method. For example, pre-defined may refer to information defined in a protocol.

[0219] In the embodiments of this application, the term "and / or" is simply a description of the association relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this document generally indicates that the related objects are in an "or" relationship.

[0220] In the embodiments of this application, the term "include" can refer to direct inclusion or indirect inclusion. Alternatively, the term "include" in the embodiments of this application can be replaced with "indicates" or "is used to determine." For example, "A includes B" can be replaced with "A indicates B" or "A is used to determine B."

[0221] In various embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0222] In the embodiments of the present application, the "protocol" may refer to a standard protocol in the communication field, for example, it may include a Wi-Fi protocol and related protocols used in future WiFi communication systems, and the present application does not limit this.

[0223] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of the units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0224] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0225] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0226] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the process or function described in the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from one website, computer, server or data center to another website, computer, server or data center via a wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) method. The computer-readable storage medium can be any available medium that can be read by a computer or a data storage device such as a server or data center that includes one or more available media integrated therein. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a digital versatile disc (DVD)), or a semiconductor medium (eg, a solid state disk (SSD)).

[0227] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A wireless communication method, characterized in that: The method comprises: Based on the interference information, the first device sends a first frame to the second device, where the first frame is used to indicate interference coordination operation information of one or more links and / or one or more sub-channels / working frequency bands.

2. The method according to claim 1, characterized in that The interference coordination operation information is used to instruct the interfered sub-channel / operating frequency band of the interfered device not to operate within an unavailable time, where the unavailable time is determined based on the interference information.

3. The method according to claim 2, characterized in that The unavailable time is included in or not included in a first predetermined service period, the first predetermined service period is determined based on the interference time, and the undisturbed sub-channel / working frequency band of the interfered device operates within the first predetermined service period.

4. The method according to claim 2 or 3, characterized in that The first frame includes first information, where the first information is used to indicate the unavailable time of the interfered sub-channel / working frequency band.

5. The method according to claim 4, characterized in that The first information includes one or more of the following: Link identification IDs to which the interfered sub-channel / working frequency band and / or the uninterrupted sub-channel / working frequency band belong; IDs of the interfered sub-channel / working frequency band and / or the uninterfered sub-channel / working frequency band; The operating frequency band of the interfered sub-channel / operating frequency band and / or the undisturbed sub-channel / operating frequency band; the type of interference; a time slot of the unavailable time; Whether the interfered sub-channel / operating frequency band and / or the uninterrupted sub-channel / operating frequency band is a primary channel; Minimum time slot unit.

6. The method according to any one of claims 2 to 5, characterized in that The first frame is based on a negotiation process indication of a first subscribed service period.

7. The method according to claim 6, characterized in that The first frame carries a first element, where the first element is used to negotiate the first subscription service period.

8. The method according to claim 1, characterized in that The interference coordination operation information is used to instruct all or part of the transmission or reception resources on the interfered link to be transferred to the undisturbed link, and the interfered link and the undisturbed link are determined by the interference information.

9. The method according to claim 8, characterized in that The first frame includes second information, where the second information is used to indicate a distribution of the number of spatial streams of the interfered link and the non-interfered link.

10. The method according to claim 9, characterized in that The number of spatial streams is distributed as follows: The number of spatial streams on the interfered link is 0, and the number of spatial streams on the undisturbed link is m+n, where m is the initial number of spatial streams on the interfered link, and n is the initial number of spatial streams on the undisturbed link.

11. The method according to claim 9, characterized in that The number of spatial streams is distributed as follows: The number of spatial streams on the interfered link is 1, the number of spatial streams on the uninterrupted link is m+n-1, m is the initial number of spatial streams on the interfered link, n is the initial number of spatial streams on the uninterrupted link, and one spatial stream on the interfered link is used for channel sensing.

12. The method according to any one of claims 9 to 11, characterized in that The second information includes one or more of the following information of each link: Link ID; Number of available spatial streams NSS; Link operating frequency band; Spatial stream switching time; Maximum NSS limit; Maximum modulation and coding MCS limit; Maximum protocol data unit (PPDU) size limit.

13. The method according to any one of claims 8 to 12, characterized in that The initial state of the spatial stream quantity distribution is restored based on the expiration of a first timer, where the timing duration of the first timer is determined by the first device.

14. The method according to claim 13, characterized in that A start time of the first timer is determined based on a time when the first device receives a response frame to the first frame.

15. The method according to any one of claims 8 to 12, characterized in that The method further comprises: The first device sends a second frame to the second device, where the second frame is used to indicate restoration of an initial state of the spatial stream quantity distribution.

16. The method according to claim 15, characterized in that The second frame is a first link indication frame.

17. The method according to any one of claims 8 to 16, characterized in that The first frame is a first link indication frame or a first multi-user request to send MU-RTS frame.

18. The method according to claim 1, wherein The interference coordination operation information is used to instruct the interfered device to transmit and receive synchronously with the interfering system on the interfered link, or to make the interfered device not operate on the interfered link when the interfering system is transmitting and receiving.

19. The method according to claim 18, characterized in that The first frame includes third information, where the third information is used to indicate an uplink and downlink transmission rhythm of the interfered link within a first reserved service period, where the first reserved service period is determined based on a time when the first device or the second device sends data in the interfering system.

20. The method according to claim 19, characterized in that The uplink and downlink transmission rhythm is: On the interfered link, the interfered device performs uplink transmission within the first reserved service period.

21. The method according to claim 20, characterized in that The uplink and downlink transmission rhythm is applicable to the interfered device in the active mode.

22. The method according to claim 19, wherein The uplink and downlink transmission rhythm is: On the interfered link, the interfered device distinguishes between uplink transmission and downlink transmission in different first reserved service periods.

23. The method according to claim 19, wherein The uplink and downlink transmission rhythm is: On the interfered link, the interfered device performs uplink transmission first and then downlink transmission within the first reserved service period.

24. The method according to claim 22 or 23, characterized in that The uplink and downlink transmission rhythm is applicable to the interfered device in a power saving mode.

25. The method according to any one of claims 19 to 24, characterized in that The third information includes one or more of the following information about the interfered link during the first subscription service period: Minimum time slot unit; Uplink and downlink time slot ratio; Up and down instructions; A reverse operation indication is used to indicate whether to change the transmission direction within the first subscription service period.

26. The method according to any one of claims 18 to 25, characterized in that The first frame is based on a negotiation process indication of a first subscribed service period.

27. The method according to claim 26, characterized in that The first frame carries a first element, where the first element is used to negotiate the first subscription service period.

28. The method according to any one of claims 19 to 27, characterized in that The method further comprises: During the first predetermined service period, the first device dynamically indicates to the second device an uplink and downlink transmission direction and / or an uplink and downlink transmission ratio.

29. The method according to any one of claims 19 to 28, characterized in that The interfered link is aligned with a time slot end point of a last time slot of the interfering system within the first subscribed service period.

30. The method according to any one of claims 19 to 29, characterized in that The uplink and downlink transmission rhythm does not affect the channel monitoring capability within the first predetermined service period.

31. The method according to claim 7 or 30, characterized in that The method further comprises: During the first scheduled service period, the first device indicates to the second device relevant information of the next first scheduled service period.

32. The method according to claim 31, characterized in that The management frame for establishing the first scheduled service period includes a first mode field, and the first mode field is used to indicate whether the working mode of the first scheduled service period is an explicit working mode or an implicit working mode.

33. The method according to any one of claims 1 to 32, characterized in that The interference information includes one or more of the following information at the sub-channel / operating frequency band level: An indication of whether the subchannel / operating frequency band is subject to interference; Type of interference; The time when the interference starts; The operating frequency band of the interference system; Uplink and downlink transmission time of the interference system; the total transmission time of the jamming system; The minimum time slot unit of the interference system; Information about periodic interference.

34. The method according to claim 33, wherein The interference information is reported by the second device.

35. The method according to claim 34, wherein The interference information is carried in a first interference information frame.

36. The method according to claim 35, characterized in that The first interference information frame includes multiple interference information subfields, and each interference information subfield is used to carry interference information of one subchannel / working frequency band.

37. The method according to any one of claims 34 to 36, characterized in that The reporting of the interference information is triggered based on a third frame of the first device, where the third frame is used to instruct one or more second devices to report the interference information.

38. The method according to claim 37, wherein The third frame is a first interference information trigger frame, and the first interference information trigger frame includes a first request field, and the first request field is used to indicate whether to request to report the interference information.

39. The method according to any one of claims 1 to 38, characterized in that The first device is the non-access point site device, and the second device is an access point device.

40. The method according to any one of claims 1 to 39, characterized in that The first device is an access point device, and the second device is a non-access point site device.

41. The method according to any one of claims 1 to 40, characterized in that The first predetermined service period is the target wake-up time TWT SP or the non-triggered restricted target wake-up time R-TWT SP.

42. The method according to any one of claims 1 to 41, characterized in that The interference information is interference information of a shared device system.

43. A wireless communication method, characterized in that: The method comprises: Based on the interference information, the second device receives a first frame sent by the first device, where the first frame is used to indicate interference coordination operation information of one or more links and / or one or more sub-channels / working frequency bands.

44. The method according to claim 43, wherein The interference coordination operation information is used to instruct the interfered sub-channel / operating frequency band of the interfered device not to operate within an unavailable time, where the unavailable time is determined based on the interference information.

45. The method according to claim 44, wherein The unavailable time is included in or not included in a first predetermined service period, the first predetermined service period is determined based on the interference time, and the undisturbed sub-channel / working frequency band of the interfered device operates within the first predetermined service period.

46. ​​The method according to claim 44 or 45, characterized in that The first frame includes first information, where the first information is used to indicate the unavailable time of the interfered sub-channel / working frequency band.

47. The method according to claim 46, wherein The first information includes one or more of the following: Link identification IDs to which the interfered sub-channel / working frequency band and / or the uninterrupted sub-channel / working frequency band belong; IDs of the interfered sub-channel / working frequency band and / or the uninterfered sub-channel / working frequency band; The operating frequency band of the interfered sub-channel / operating frequency band and / or the undisturbed sub-channel / operating frequency band; the type of interference; a time slot of the unavailable time; Whether the interfered sub-channel / operating frequency band and / or the uninterrupted sub-channel / operating frequency band is a primary channel; Minimum time slot unit.

48. The method according to any one of claims 44 to 47, characterized in that The first frame is based on a negotiation process indication of a first subscribed service period.

49. The method according to claim 48, characterized in that The first frame carries a first element, where the first element is used to negotiate the first subscription service period.

50. The method according to claim 43, wherein The interference coordination operation information is used to instruct all or part of the transmission or reception resources on the interfered link to be transferred to the undisturbed link, and the interfered link and the undisturbed link are determined by the interference information.

51. The method according to claim 50, characterized in that The first frame includes second information, where the second information is used to indicate a distribution of the number of spatial streams of the interfered link and the non-interfered link.

52. The method according to claim 51, characterized in that The number of spatial streams is distributed as follows: The number of spatial streams on the interfered link is 0, and the number of spatial streams on the undisturbed link is m+n, where m is the initial number of spatial streams on the interfered link, and n is the initial number of spatial streams on the undisturbed link.

53. The method according to claim 51, characterized in that The number of spatial streams is distributed as follows: The number of spatial streams on the interfered link is 1, the number of spatial streams on the uninterrupted link is m+n-1, m is the initial number of spatial streams on the interfered link, n is the initial number of spatial streams on the uninterrupted link, and one spatial stream on the interfered link is used for channel sensing.

54. The method according to any one of claims 51 to 53, characterized in that The second information includes one or more of the following information of each link: Link ID; Number of available spatial streams NSS; Link operating frequency band; Spatial stream switching time; Maximum NSS limit; Maximum modulation and coding MCS limit; Maximum protocol data unit (PPDU) size limit.

55. The method according to any one of claims 50 to 54, characterized in that The initial state of the spatial stream quantity distribution is restored based on the expiration of a first timer, where the timing duration of the first timer is determined by the first device.

56. The method according to claim 55, characterized in that A start time of the first timer is determined based on a time when the first device receives a response frame to the first frame.

57. The method according to any one of claims 50 to 54, characterized in that The method further comprises: The second device receives a second frame sent by the first device, where the second frame is used to indicate restoration of an initial state of the spatial stream quantity distribution.

58. The method according to claim 57, wherein The second frame is a first link indication frame.

59. The method according to any one of claims 50 to 58, characterized in that The first frame is a first link indication frame or a first multi-user request to send MU-RTS frame.

60. The method according to claim 43, wherein The interference coordination operation information is used to instruct the interfered device to transmit and receive synchronously with the interfering system on the interfered link, or to make the interfered device not operate on the interfered link when the interfering system is transmitting and receiving.

61. The method according to claim 60, characterized in that The first frame includes third information, where the third information is used to indicate an uplink and downlink transmission rhythm of the interfered link within a first reserved service period, where the first reserved service period is determined based on a time when the first device or the second device sends data in the interfering system.

62. The method according to claim 61, characterized in that The uplink and downlink transmission rhythm is: On the interfered link, the interfered device performs uplink transmission within the first reserved service period.

63. The method according to claim 62, characterized in that The uplink and downlink transmission rhythm is applicable to the interfered device in the active mode.

64. The method according to claim 61, wherein The uplink and downlink transmission rhythm is: On the interfered link, the interfered device distinguishes between uplink transmission and downlink transmission in different first reserved service periods.

65. The method according to claim 61, characterized in that The uplink and downlink transmission rhythm is: On the interfered link, the interfered device performs uplink transmission first and then downlink transmission within the first reserved service period.

66. The method according to claim 64 or 65, characterized in that The uplink and downlink transmission rhythm is applicable to the interfered device in a power saving mode.

67. The method according to any one of claims 61 to 66, characterized in that The third information includes one or more of the following information about the interfered link during the first subscription service period: Minimum time slot unit; Uplink and downlink time slot ratio; Up and down instructions; A reverse operation indication is used to indicate whether to change the transmission direction within the first subscription service period.

68. The method according to any one of claims 60 to 67, characterized in that The first frame is based on a negotiation process indication of a first subscribed service period.

69. The method according to claim 68, characterized in that The first frame carries a first element, where the first element is used to negotiate the first subscription service period.

70. The method according to any one of claims 61 to 69, characterized in that The method further comprises: During the first predetermined service period, the second device receives the uplink and downlink transmission directions and / or uplink and downlink transmission ratios dynamically indicated by the first device.

71. The method according to any one of claims 61 to 70, characterized in that The interfered link is aligned with a time slot end point of a last time slot of the interfering system within the first subscribed service period.

72. The method according to any one of claims 61 to 71, characterized in that The uplink and downlink transmission rhythm does not affect the channel monitoring capability within the first predetermined service period.

73. The method according to claim 49 or 72, characterized in that The method further comprises: During the first scheduled service period, the second device receives relevant information of the next first scheduled service period indicated by the first device.

74. The method according to claim 73, characterized in that The management frame for establishing the first scheduled service period includes a first mode field, and the first mode field is used to indicate whether the working mode of the first scheduled service period is an explicit working mode or an implicit working mode.

75. The method according to any one of claims 43 to 74, characterized in that The interference information includes one or more of the following information at the sub-channel / operating frequency band level: An indication of whether the subchannel / operating frequency band is subject to interference; Type of interference; The time when the interference starts; The operating frequency band of the interference system; Uplink and downlink transmission time of the interference system; the total transmission time of the jamming system; The minimum time slot unit of the interference system; Information about periodic interference.

76. The method according to claim 75, characterized in that The interference information is reported by the second device.

77. The method according to claim 76, characterized in that The interference information is carried in a first interference information frame.

78. The method according to claim 77, characterized in that The first interference information frame includes multiple interference information subfields, and each interference information subfield is used to carry interference information of one subchannel / working frequency band.

79. The method according to any one of claims 76 to 78, characterized in that The reporting of the interference information is triggered based on a third frame of the first device, where the third frame is used to instruct one or more second devices to report the interference information.

80. The method according to claim 79, wherein The third frame is a first interference information trigger frame, and the first interference information trigger frame includes a first request field, and the first request field is used to indicate whether to request to report the interference information.

81. The method according to any one of claims 43 to 80, characterized in that The first device is the non-access point site device, and the second device is an access point device.

82. The method according to any one of claims 43 to 81, characterized in that The first device is an access point device, and the second device is a non-access point site device.

83. The method according to any one of claims 43 to 82, characterized in that The first predetermined service period is the target wake-up time TWT SP or the non-triggered restricted target wake-up time R-TWT SP.

84. The method according to any one of claims 43 to 83, characterized in that The interference information is interference information of a shared device system.

85. A communication device, the communication device being a first device, characterized in that: The communication device comprises: The sending module is used to send a first frame to the second device based on the interference information, where the first frame is used to indicate interference coordination operation information of one or more links and / or one or more sub-channels / working frequency bands.

86. The communication device according to claim 85, characterized in that The interference coordination operation information is used to instruct the interfered sub-channel / operating frequency band of the interfered device not to operate within an unavailable time, where the unavailable time is determined based on the interference information.

87. The communication device according to claim 86, characterized in that The unavailable time is included in or not included in a first predetermined service period, the first predetermined service period is determined based on the interference time, and the undisturbed sub-channel / working frequency band of the interfered device operates within the first predetermined service period.

88. The communication device according to claim 86 or 87, characterized in that The first frame includes first information, where the first information is used to indicate the unavailable time of the interfered sub-channel / working frequency band.

89. The communication device according to claim 88, characterized in that The first information includes one or more of the following: Link identification IDs to which the interfered sub-channel / working frequency band and / or the uninterrupted sub-channel / working frequency band belong; IDs of the interfered sub-channel / working frequency band and / or the uninterfered sub-channel / working frequency band; The operating frequency band of the interfered sub-channel / operating frequency band and / or the undisturbed sub-channel / operating frequency band; the type of interference; a time slot of the unavailable time; Whether the interfered sub-channel / operating frequency band and / or the uninterrupted sub-channel / operating frequency band is a primary channel; Minimum time slot unit.

90. The communication device according to any one of claims 86 to 89, characterized in that The first frame is based on a negotiation process indication of a first subscribed service period.

91. The communication device according to claim 90, wherein: The first frame carries a first element, where the first element is used to negotiate the first subscription service period.

92. The communication device according to claim 85, wherein The interference coordination operation information is used to instruct all or part of the transmission or reception resources on the interfered link to be transferred to the undisturbed link, and the interfered link and the undisturbed link are determined by the interference information.

93. The communication device according to claim 92, characterized in that The first frame includes second information, where the second information is used to indicate a distribution of the number of spatial streams of the interfered link and the non-interfered link.

94. The communication device according to claim 93, characterized in that The number of spatial streams is distributed as follows: The number of spatial streams on the interfered link is 0, and the number of spatial streams on the undisturbed link is m+n, where m is the initial number of spatial streams on the interfered link, and n is the initial number of spatial streams on the undisturbed link.

95. The communication device according to claim 93, characterized in that The number of spatial streams is distributed as follows: The number of spatial streams on the interfered link is 1, the number of spatial streams on the uninterrupted link is m+n-1, m is the initial number of spatial streams on the interfered link, n is the initial number of spatial streams on the uninterrupted link, and one spatial stream on the interfered link is used for channel sensing.

96. The communication device according to any one of claims 93 to 95, characterized in that The second information includes one or more of the following information of each link: Link ID; Number of available spatial streams NSS; Link operating frequency band; Spatial stream switching time; Maximum NSS limit; Maximum modulation and coding MCS limit; Maximum protocol data unit (PPDU) size limit.

97. The communication device according to any one of claims 92 to 96, characterized in that The initial state of the spatial stream quantity distribution is restored based on the expiration of a first timer, where the timing duration of the first timer is determined by the first device.

98. The communication device according to claim 97, characterized in that A start time of the first timer is determined based on a time when the first device receives a response frame to the first frame.

99. The communication device according to any one of claims 92 to 96, characterized in that The sending module is further used for: A second frame is sent to the second device, where the second frame is used to indicate restoration of an initial state of the spatial stream quantity distribution.

100. The communication device according to claim 99, characterized in that The second frame is a first link indication frame.

101. The communication device according to any one of claims 92 to 100, characterized in that The first frame is a first link indication frame or a first multi-user request to send MU-RTS frame.

102. The communication device according to claim 85, characterized in that The interference coordination operation information is used to instruct the interfered device to transmit and receive synchronously with the interfering system on the interfered link, or to make the interfered device not operate on the interfered link when the interfering system is transmitting and receiving.

103. The communication device according to claim 102, characterized in that The first frame includes third information, where the third information is used to indicate an uplink and downlink transmission rhythm of the interfered link within a first reserved service period, where the first reserved service period is determined based on a time when the first device or the second device sends data in the interfering system.

104. The communication device according to claim 103, characterized in that The uplink and downlink transmission rhythm is: On the interfered link, the interfered device performs uplink transmission within the first reserved service period.

105. The communication device according to claim 104, characterized in that The uplink and downlink transmission rhythm is applicable to the interfered device in the active mode.

106. The communication device according to claim 103, characterized in that The uplink and downlink transmission rhythm is: On the interfered link, the interfered device distinguishes between uplink transmission and downlink transmission in different first reserved service periods.

107. The communication device according to claim 103, characterized in that The uplink and downlink transmission rhythm is: On the interfered link, the interfered device performs uplink transmission first and then downlink transmission within the first reserved service period.

108. The communication device according to claim 106 or 107, characterized in that The uplink and downlink transmission rhythm is applicable to the interfered device in a power saving mode.

109. The communication device according to any one of claims 103 to 108, characterized in that The third information includes one or more of the following information about the interfered link during the first subscription service period: Minimum time slot unit; Uplink and downlink time slot ratio; Up and down instructions; A reverse operation indication is used to indicate whether to change the transmission direction within the first subscription service period.

110. The communication device according to any one of claims 102 to 109, characterized in that The first frame is based on a negotiation process indication of a first subscribed service period.

111. The communication device according to claim 110, characterized in that The first frame carries a first element, where the first element is used to negotiate the first subscription service period.

112. The communication device according to any one of claims 103 to 111, characterized in that The sending module is further used for: During the first predetermined service period, the uplink and downlink transmission directions and / or uplink and downlink transmission ratios are dynamically indicated to the second device.

113. The communication device according to any one of claims 103 to 112, characterized in that The interfered link is aligned with a time slot end point of a last time slot of the interfering system within the first subscribed service period.

114. The communication device according to any one of claims 103 to 113, characterized in that The uplink and downlink transmission rhythm does not affect the channel monitoring capability within the first predetermined service period.

115. The communication device according to claim 91 or 114, characterized in that The sending module is further used for: During the first scheduled service period, relevant information of the next first scheduled service period is indicated to the second device.

116. The communication device according to claim 115, characterized in that The management frame for establishing the first scheduled service period includes a first mode field, and the first mode field is used to indicate whether the working mode of the first scheduled service period is an explicit working mode or an implicit working mode.

117. The communication device according to any one of claims 85 to 116, characterized in that The interference information includes one or more of the following information at the sub-channel / operating frequency band level: An indication of whether the subchannel / operating frequency band is subject to interference; Type of interference; The time when the interference starts; The operating frequency band of the interference system; Uplink and downlink transmission time of the interference system; the total transmission time of the jamming system; The minimum time slot unit of the interference system; Information about periodic interference.

118. The communication device according to claim 117, characterized in that The interference information is reported by the second device.

119. The communication device according to claim 118, characterized in that The interference information is carried in a first interference information frame.

120. The communication device according to claim 119, characterized in that The first interference information frame includes multiple interference information subfields, and each interference information subfield is used to carry interference information of one subchannel / working frequency band.

121. The communication device according to any one of claims 118 to 120, characterized in that The reporting of the interference information is triggered based on a third frame of the first device, where the third frame is used to instruct one or more second devices to report the interference information.

122. The communication device according to claim 121, characterized in that The third frame is a first interference information trigger frame, and the first interference information trigger frame includes a first request field, and the first request field is used to indicate whether to request to report the interference information.

123. The communication device according to any one of claims 85 to 122, characterized in that The first device is the non-access point site device, and the second device is an access point device.

124. The communication device according to any one of claims 85 to 123, characterized in that The first device is an access point device, and the second device is a non-access point site device.

125. The communication device according to any one of claims 85 to 124, characterized in that The first predetermined service period is the target wake-up time TWT SP or the non-triggered restricted target wake-up time R-TWT SP.

126. The communication device according to any one of claims 85 to 125, characterized in that The interference information is interference information of a shared device system.

127. A communication device, the communication device being a second device, characterized in that: The communication device comprises: The receiving module is used to receive a first frame sent by a first device based on interference information, where the first frame is used to indicate interference coordination operation information of one or more links and / or one or more sub-channels / working frequency bands.

128. The communication device according to claim 127, characterized in that The interference coordination operation information is used to instruct the interfered sub-channel / operating frequency band of the interfered device not to operate within an unavailable time, where the unavailable time is determined based on the interference information.

129. The communication device according to claim 128, characterized in that The unavailable time is included in or not included in a first predetermined service period, the first predetermined service period is determined based on the interference time, and the undisturbed sub-channel / working frequency band of the interfered device operates within the first predetermined service period.

130. The communication device according to claim 128 or 129, characterized in that The first frame includes first information, where the first information is used to indicate the unavailable time of the interfered sub-channel / working frequency band.

131. The communication device according to claim 130, characterized in that The first information includes one or more of the following: Link identification IDs to which the interfered sub-channel / working frequency band and / or the uninterrupted sub-channel / working frequency band belong; IDs of the interfered sub-channel / working frequency band and / or the uninterfered sub-channel / working frequency band; The operating frequency band of the interfered sub-channel / operating frequency band and / or the undisturbed sub-channel / operating frequency band; the type of interference; a time slot of the unavailable time; Whether the interfered sub-channel / operating frequency band and / or the uninterrupted sub-channel / operating frequency band is a primary channel; Minimum time slot unit.

132. The communication device according to any one of claims 128 to 131, characterized in that The first frame is based on a negotiation process indication of a first subscribed service period.

133. The communication device according to claim 132, characterized in that The first frame carries a first element, where the first element is used to negotiate the first subscription service period.

134. The communication device according to claim 127, characterized in that The interference coordination operation information is used to instruct all or part of the transmission or reception resources on the interfered link to be transferred to the undisturbed link, and the interfered link and the undisturbed link are determined by the interference information.

135. The communication device according to claim 134, characterized in that The first frame includes second information, where the second information is used to indicate a distribution of the number of spatial streams of the interfered link and the non-interfered link.

136. The communication device according to claim 135, characterized in that The number of spatial streams is distributed as follows: The number of spatial streams on the interfered link is 0, and the number of spatial streams on the undisturbed link is m+n, where m is the initial number of spatial streams on the interfered link, and n is the initial number of spatial streams on the undisturbed link.

137. The communication device according to claim 135, characterized in that The number of spatial streams is distributed as follows: The number of spatial streams on the interfered link is 1, the number of spatial streams on the uninterrupted link is m+n-1, m is the initial number of spatial streams on the interfered link, n is the initial number of spatial streams on the uninterrupted link, and one spatial stream on the interfered link is used for channel sensing.

138. The communication device according to any one of claims 135 to 137, characterized in that The second information includes one or more of the following information of each link: Link ID; Number of available spatial streams NSS; Link operating frequency band; Spatial stream switching time; Maximum NSS limit; Maximum modulation and coding MCS limit; Maximum protocol data unit (PPDU) size limit.

139. The communication device according to any one of claims 134 to 138, characterized in that The initial state of the spatial stream quantity distribution is restored based on the expiration of a first timer, where the timing duration of the first timer is determined by the first device.

140. The communication device according to claim 139, characterized in that A start time of the first timer is determined based on a time when the first device receives a response frame to the first frame.

141. The communication device according to any one of claims 134 to 138, characterized in that The communication device further includes: The first receiving module is configured to receive a second frame sent by the first device, where the second frame is used to indicate restoration of an initial state of the spatial stream quantity distribution.

142. The communication device according to claim 141, characterized in that The second frame is a first link indication frame.

143. The communication device according to any one of claims 134 to 142, characterized in that The first frame is a first link indication frame or a first multi-user request to send MU-RTS frame.

144. The communication device according to claim 127, characterized in that The interference coordination operation information is used to instruct the interfered device to transmit and receive synchronously with the interfering system on the interfered link, or to make the interfered device not operate on the interfered link when the interfering system is transmitting and receiving.

145. The communication device according to claim 144, characterized in that The first frame includes third information, where the third information is used to indicate an uplink and downlink transmission rhythm of the interfered link within a first reserved service period, where the first reserved service period is determined based on a time when the first device or the second device sends data in the interfering system.

146. The communication device according to claim 145, characterized in that The uplink and downlink transmission rhythm is: On the interfered link, the interfered device performs uplink transmission within the first reserved service period.

147. The communication device according to claim 146, characterized in that The uplink and downlink transmission rhythm is applicable to the interfered device in the active mode.

148. The communication device according to claim 145, characterized in that The uplink and downlink transmission rhythm is: On the interfered link, the interfered device distinguishes between uplink transmission and downlink transmission in different first reserved service periods.

149. The communication device according to claim 145, characterized in that The uplink and downlink transmission rhythm is: On the interfered link, the interfered device performs uplink transmission first and then downlink transmission within the first reserved service period.

150. The communication device according to claim 148 or 149, characterized in that The uplink and downlink transmission rhythm is applicable to the interfered device in a power saving mode.

151. The communication device according to any one of claims 145 to 150, characterized in that The third information includes one or more of the following information about the interfered link during the first subscription service period: Minimum time slot unit; Uplink and downlink time slot ratio; Up and down instructions; A reverse operation indication is used to indicate whether to change the transmission direction within the first subscription service period.

152. The communication device according to any one of claims 144 to 151, characterized in that The first frame is based on a negotiation process indication of a first subscribed service period.

153. The communication device according to claim 152, characterized in that The first frame carries a first element, where the first element is used to negotiate the first subscription service period.

154. The communication device according to any one of claims 145 to 153, characterized in that The communication device further includes: The second receiving module is configured to receive, within the first predetermined service period, an uplink and downlink transmission direction and / or an uplink and downlink transmission ratio dynamically indicated by the first device.

155. The communication device according to any one of claims 145 to 154, characterized in that The interfered link is aligned with a time slot end point of a last time slot of the interfering system within the first subscribed service period.

156. The communication device according to any one of claims 145 to 155, characterized in that The uplink and downlink transmission rhythm does not affect the channel monitoring capability within the first predetermined service period.

157. The communication device according to claim 133 or 156, characterized in that The communication device further includes: The third receiving module is configured to receive, within the first scheduled service period, relevant information of the next first scheduled service period indicated by the first device.

158. The communication device according to claim 157, characterized in that The management frame for establishing the first scheduled service period includes a first mode field, and the first mode field is used to indicate whether the working mode of the first scheduled service period is an explicit working mode or an implicit working mode.

159. The communication device according to any one of claims 127 to 158, characterized in that The interference information includes one or more of the following information at the sub-channel / operating frequency band level: An indication of whether the subchannel / operating frequency band is subject to interference; Type of interference; The time when the interference starts; The operating frequency band of the interference system; Uplink and downlink transmission time of the interference system; the total transmission time of the jamming system; The minimum time slot unit of the interference system; Information about periodic interference.

160. The communication device according to claim 159, characterized in that The interference information is reported by the second device.

161. The communication device according to claim 160, characterized in that The interference information is carried in a first interference information frame.

162. The communication device according to claim 161, characterized in that The first interference information frame includes multiple interference information subfields, and each interference information subfield is used to carry interference information of one subchannel / working frequency band.

163. The communication device according to any one of claims 160 to 162, characterized in that The reporting of the interference information is triggered based on a third frame of the first device, where the third frame is used to instruct one or more second devices to report the interference information.

164. The communication device according to claim 163, characterized in that The third frame is a first interference information trigger frame, and the first interference information trigger frame includes a first request field, and the first request field is used to indicate whether to request to report the interference information.

165. The communication device according to any one of claims 127 to 164, characterized in that The first device is the non-access point site device, and the second device is an access point device.

166. The communication device according to any one of claims 127 to 165, characterized in that The first device is an access point device, and the second device is a non-access point site device.

167. The communication device according to any one of claims 127 to 166, characterized in that The first predetermined service period is the target wake-up time TWT SP or the non-triggered restricted target wake-up time R-TWT SP.

168. The communication device according to any one of claims 127 to 167, characterized in that The interference information is interference information of a shared device system.

169. A communication device, characterized in that The communication device comprises a memory and a processor, wherein the memory is used to store a program, and the processor is used to call the program in the memory so as to enable the communication device to execute the method according to any one of claims 1 to 42.

170. A communication device, characterized in that The device comprises a memory and a processor, wherein the memory is used to store a program, and the processor is used to call the program in the memory so as to enable the communication device to execute the method as claimed in any one of claims 43 to 84.

171. A device, characterized in that The device comprises a processor configured to call a program from a memory so as to cause the device to execute the method according to any one of claims 1-42 or 43-84.

172. A chip, characterized in that: The device comprises a processor configured to call a program from a memory so that a device equipped with the chip executes the method according to any one of claims 1 to 42 or 43 to 84.

173. A computer-readable storage medium, characterized in that A program is stored thereon, the program causing a computer to execute the method according to any one of claims 1-42 or 43-84.

174. A computer program product, characterized in that A program is included, which causes a computer to execute the method according to any one of claims 1-42 or 43-84.

175. A computer program, characterized in that The computer program causes a computer to execute the method according to any one of claims 1-42 or 43-84.

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