Communication method and communication apparatus

Abstract

The present application relates to the technical field of wireless communications, and particularly relates to a communication method and a communication apparatus. The method comprises: when detecting radio-frequency interference from a WLAN, a second communication apparatus in a cellular network sending first indication information; correspondingly, a first communication apparatus in the WLAN receiving the first indication information, wherein the first indication information is used for indicating that the second communication apparatus in the cellular network is subjected to the radio-frequency interference from the WLAN; and the first communication apparatus changing a transmission policy for a radio-frequency signal on the basis of the first indication information. Therefore, the interference of a radio-frequency signal of a WLAN on a second communication apparatus can be avoided. The present application can support an IEEE protocol, such as an IEEE802.11be / WiFi 7 / EHT protocol, an IEEE 802.11bn / UHR / WiFi 8 protocol, an IEEE 802.15 / UWB protocol, an IEEE 802.11bf / sensing protocol and a millimeter wave (MMW) protocol.

Description

Communication methods and communication devices

[0001] This application claims priority to Chinese Patent Application No. 202410554641.5, filed on May 6, 2024, entitled "Communication Method and Communication Device", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of communication technology, and in particular to a communication method and communication device. Background Technology

[0003] In scenarios where wireless local area networks (WLANs) and cellular networks share a common spectrum, the cellular network and WLAN can use the same spectrum, which can improve spectrum efficiency.

[0004] In hybrid sharing scenarios, cellular networks and WLANs can experience co-channel interference. For example, radio frequency signals transmitted by WLAN stations can interfere with terminal devices in cellular networks. Therefore, how to avoid interference from WLAN radio frequency signals to terminal devices in cellular networks is a problem that urgently needs to be solved. Summary of the Invention

[0005] This application provides a communication method and a communication device that can avoid interference from WLAN radio frequency signals to terminal devices in cellular networks.

[0006] In a first aspect, embodiments of this application provide a communication method applied to a first communication device, the first communication device being in a WLAN access state. The method includes:

[0007] Receive first indication information, which indicates that the second communication device is being interfered with by the radio frequency signal of the WLAN and that the second communication device is in a state of accessing the cellular network; based on the first indication information, change the transmission strategy of the radio frequency signal.

[0008] In this embodiment, the first indication information is used to indicate that the second communication device is a terminal device in a cellular network and that the second communication device is subject to radio frequency signal interference from the WLAN. Alternatively, the first indication information is used to instruct the first communication device in the WLAN to change its radio frequency signal transmission strategy to avoid interference with the second communication device. After detecting radio frequency signal interference from the WLAN, the second communication device in the cellular network sends the first indication information. Upon receiving the first indication information, the first communication device in the WLAN changes its radio frequency signal transmission strategy, thereby preventing the radio frequency signals in the WLAN from interfering with the second communication device.

[0009] In conjunction with the first aspect, in one possible implementation, the first indication information is carried in a first radio frame, the first radio frame including channel information of the second communication device or information about channels available to the first communication device, and the step of changing the transmission strategy of the radio frequency signal based on the first indication information includes:

[0010] Channel punching is performed based on the channel information of the second communication device or the channel information available to the first communication device.

[0011] In this embodiment, the channel information of the second communication device is used to indicate the operating channel of the second communication device. The information about the available channels for the first communication device can be determined by the operating channel of the second communication device and the WLAN channels specified in the protocol or standard. For example, the available channels for the first communication device are channels used by the WLAN specified in the protocol or standard other than the operating channel of the second communication device. The first communication device can modify the transmission strategy of the radio frequency signal by channel puncturing, so that the operating channel of the second communication device is punctured to avoid interference of the radio frequency signal to terminal devices in the cellular network.

[0012] In conjunction with the first aspect, in one possible implementation, the change of the radio frequency signal transmission strategy based on the first indication information includes:

[0013] Reduce the transmission power of radio frequency signals.

[0014] In this embodiment of the application, by reducing the transmission power of the radio frequency signal, the interference of the WLAN radio frequency signal to the second communication device can be reduced or avoided.

[0015] In conjunction with the first aspect, in one possible implementation, the second communication device occupies multiple channels, and the transmission power of the radio frequency signal with reduced transmission power on the multiple channels is less than or equal to a first threshold, or the power spectral density of the radio frequency signal with reduced transmission power on the multiple channels is less than or equal to a second threshold.

[0016] In this embodiment of the application, by limiting the transmission power or power spectral density of radio frequency signals on multiple channels, it is possible to avoid interference from radio frequency signals transmitted on these multiple channels to the second communication device.

[0017] In conjunction with the first aspect, in one possible implementation, the plurality of channels are a plurality of 20MHz channels.

[0018] In conjunction with the first aspect, in one possible implementation, the change of the radio frequency signal transmission strategy based on the first indication information includes:

[0019] No radio frequency signals are transmitted during the operating cycle of the second communication device.

[0020] In this embodiment of the application, the first communication device does not transmit radio frequency signals during the working cycle of the second communication device, which can effectively avoid interference of radio frequency signals to the second communication device.

[0021] In conjunction with the first aspect, in one possible implementation, the change of the radio frequency signal transmission strategy based on the first indication information includes:

[0022] Switch the channel for transmitting radio frequency signals.

[0023] In this embodiment, the first communication device can switch the channel for transmitting radio frequency signals from a first channel to a second channel. The first channel is different from the second channel, which can prevent the radio frequency signals from interfering with the second communication device. For example, the first channel and the second channel do not overlap in the frequency domain, or the distance between the first channel and the second channel in the frequency domain is greater than or equal to a third threshold.

[0024] In conjunction with the first aspect, in one possible implementation, the first communication device is an access point (AP) in the WLAN, the first indication information comes from a terminal device in the WLAN, multiple links exist between the AP and the terminal device, the multiple links include a first link, the frequency band or channel corresponding to the first link overlaps with the frequency band or channel in which the second communication device operates, and the step of changing the transmission strategy of the radio frequency signal based on the first indication information includes:

[0025] Disconnect the first link or do not transmit radio frequency signals on the first link during the operating cycle of the second communication device.

[0026] In this embodiment of the application, after receiving the first instruction information, the AP disconnects the first link that overlaps with the frequency band or channel of the second communication device, or does not transmit radio frequency signals on the first link during the working cycle of the second communication device, thereby avoiding interference from the radio frequency signals transmitted on the first link to the second communication device.

[0027] In conjunction with the first aspect, in one possible implementation, the first communication device is a terminal device in the WLAN, and the step of changing the transmission strategy of the radio frequency signal based on the first indication information includes:

[0028] Switching from the WLAN to the cellular network, which is used for interference coordination.

[0029] In this embodiment of the application, when the first communication device receives the first instruction information, it switches from WLAN to cellular network, and the cellular network coordinates the interference, which can avoid mutual interference between the first communication device and the second communication device.

[0030] In conjunction with the first aspect, in one possible implementation, the method further includes:

[0031] Send a second instruction message to the AP, the second instruction message being used to instruct the first communication device to switch from the WLAN to the cellular network.

[0032] In conjunction with the first aspect, in one possible implementation, the first communication device is a terminal device in the WLAN, and the step of changing the transmission strategy of the radio frequency signal based on the first indication information includes:

[0033] The basic service set (BSS) of the terminal device is switched from the first BSS to the second BSS, and the first BSS and the second BSS occupy different channels.

[0034] In this embodiment of the application, after receiving the first instruction information, the first communication device switches to the second BSS. The second BSS occupies a different channel than the first BSS, thereby avoiding interference from radio frequency signals to the second communication device.

[0035] In conjunction with the first aspect, in one possible implementation, the first indication information is carried in a first wireless frame, the first wireless frame including at least one of the following: channel information of the second communication device, information on channels available to the first communication device, interference energy of the radio frequency signal interference, interference energy allowed by the second communication device, a first difference, priority information, and the operating cycle of the second communication device; wherein, the first difference is the difference between the interference energy of the radio frequency signal interference and the interference energy allowed by the second communication device, and the priority information is the priority relationship between the WLAN and the cellular network.

[0036] In this embodiment of the application, the second communication device can also assist the first communication device in changing the transmission strategy of the radio frequency signal by carrying relevant information in the first wireless frame.

[0037] In conjunction with the first aspect, in one possible implementation, the first indication information is carried in a first radio frame, the first radio frame being used to request the first communication device to change the transmission strategy, and the method further includes:

[0038] A second wireless frame is sent, which is used to respond to the change in the transmission strategy.

[0039] Secondly, embodiments of this application provide a communication method applied to a second communication device, the second communication device being in a state of accessing a cellular network, the method comprising:

[0040] Detect radio frequency signal interference from a wireless local area network (WLAN); send a first indication message, the first indication message being used to indicate that the second communication device is subject to the radio frequency signal interference.

[0041] In conjunction with the second aspect, in one possible implementation, the first indication information is carried in a first wireless frame, the first wireless frame including at least one of the following: channel information of the second communication device, information on channels available to the first communication device in the WLAN, interference energy of the radio frequency signal interference, interference energy allowed by the second communication device, a first difference, priority information, and the operating cycle of the second communication device; wherein, the first difference is the difference between the interference energy of the radio frequency signal interference and the interference energy allowed by the second communication device, and the priority information is the priority relationship between the WLAN and the cellular network.

[0042] In conjunction with the second aspect, in one possible implementation, the first indication information is carried in a first radio frame, the first radio frame being used to request a first communication device in the WLAN to change the transmission strategy of the radio frequency signal, and the method further includes:

[0043] Receive a second wireless frame, which is used in response to a change in the transmission strategy.

[0044] In conjunction with the second aspect, in one possible implementation, the method further includes:

[0045] If no second wireless frame is received within a certain period after sending the first indication information, a third indication information is sent to the base station in the cellular network, the third indication information being used to indicate that the second communication device is being interfered with by the radio frequency signal; a fourth indication information is received, the fourth indication information indicating the band with part (BWP) corresponding to the second communication device, the BWP not overlapping with the bandwidth of the WLAN.

[0046] In this embodiment, if the second communication device receives a second wireless frame returned by the first communication device within a certain period after sending the first indication information, and the second communication device also detects radio frequency signal interference from the WLAN, the second communication device may send a third indication information to the base station to enable the base station to avoid interference. For example, the base station may adopt the BWP operating mode to avoid the bandwidth of the WLAN, thereby avoiding radio frequency signal interference from the WLAN.

[0047] Thirdly, embodiments of this application provide a communication method applied to a base station in a cellular network, the method comprising:

[0048] Receive a third indication message, which indicates that the second communication device in the cellular network is subject to radio frequency signal interference from a wireless local area network (WLAN); send a fourth indication message, which indicates the portion bandwidth (BWP) corresponding to the second communication device, wherein the BWP does not overlap with the bandwidth of the WLAN.

[0049] In this embodiment of the application, after the base station receives the second instruction information from the second communication device, it adopts the BWP working mode to avoid the bandwidth of the WLAN, thereby avoiding WLAN radio frequency signal interference.

[0050] Fourthly, embodiments of this application provide a communication device for executing the methods in any one of the first to third aspects or any possible implementations described above. The first communication device includes a module having the capability to execute the methods in any one of the first to third aspects or any possible implementations.

[0051] Fifthly, embodiments of this application provide a communication device including a processor for executing the methods shown in any one of the first to third aspects or any possible implementations thereof. The processor executes a program stored in a memory, and when the program is executed, the methods shown in any one of the first to third aspects or any possible implementations thereof are executed.

[0052] In one possible implementation, the memory is located outside the aforementioned communication device.

[0053] In one possible implementation, the memory is located within the aforementioned communication device.

[0054] In this embodiment, the processor and memory can also be integrated into a single device, that is, the processor and memory can be integrated together. For example, the communication device can be a chip.

[0055] In one possible implementation, the communication device further includes a transceiver for receiving or sending information.

[0056] In a sixth aspect, embodiments of this application provide a communication device including a logic circuit and an interface, wherein the logic circuit and the interface are coupled; the interface is used for inputting and / or outputting information, and the logic circuit is used for performing the method described in any one of the first to third aspects or any possible implementation thereof.

[0057] In a seventh aspect, embodiments of this application provide a computer-readable storage medium for storing a computer program that, when run on a computer, causes the methods shown in any of the first to third aspects or any possible implementation thereof to be executed.

[0058] Eighthly, embodiments of this application provide a computer program product that, when run on a computer, causes the methods shown in any of the first to third aspects or any possible implementations described above to be executed. Attached Figure Description

[0059] The accompanying drawings involved in the embodiments of this application are described below.

[0060] Figure 1 is a schematic diagram of a communication system provided in an embodiment of this application;

[0061] Figure 2 is a schematic diagram of the structure of a terminal device provided in an embodiment of this application;

[0062] Figure 3A is a flowchart illustrating a communication method provided in an embodiment of this application;

[0063] Figure 3B is a flowchart illustrating another communication method provided in an embodiment of this application;

[0064] Figure 4 is a flowchart illustrating another communication method provided in an embodiment of this application;

[0065] Figure 5 is a flowchart illustrating another communication method provided in an embodiment of this application;

[0066] Figure 6 is a flowchart illustrating another communication method provided in an embodiment of this application;

[0067] Figure 7 is a schematic diagram of the structure of a communication device provided in an embodiment of this application;

[0068] Figure 8 is a schematic diagram of another communication device provided in an embodiment of this application;

[0069] Figure 9 is a schematic diagram of the structure of another communication device provided in an embodiment of this application. Detailed Implementation

[0070] The terms "first" and "second," etc., used in the specification, claims, and drawings of this application are only used to distinguish different objects and not to limit the order, sequence, priority, or importance of multiple objects. In the embodiments of this application, "multiple" refers to two or more. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or devices. Additionally, the character " / ," unless otherwise specified, generally indicates that the preceding and following objects are in an "or" relationship.

[0071] The term "embodiment" as used herein means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0072] The following describes the system involved in the embodiments of this application.

[0073] The technical solutions provided in this application can be applied to wireless local area network (WLAN) systems, supporting IEEE protocols such as IEEE 802.11be / Wi-Fi 7 / EHT, IEEE 802.11bn / UHR / Wi-Fi 8, IEEE Integrated mmWave / IMMW, IEEE 802.15 / UWB, or IEEE 802.11bf / sensing. The technical solutions provided in this application can also be applied to Spark Link (SL) systems, supporting the Spark Link / NearLink standard protocols. The technical solutions provided in this application can also be applied to the following communication systems, such as Internet of Things (IoT) systems, vehicle-to-everything (V2X, where X can represent anything), device-to-device (D2D), narrowband Internet of Things (NB-IoT) systems, long-term evolution (LTE) systems, 5th-generation (5G) communication systems, and new communication systems emerging in future communication development. For example, V2X can include vehicle-to-vehicle (V2V), vehicle-to-infrastructure (V2I), vehicle-to-pedestrian (V2P), or vehicle-to-network (V2N) communication.

[0074] WLAN systems can provide high-speed, low-latency transmission. As WLAN application scenarios continue to evolve, WLAN systems will be applied to more scenarios or industries, such as the Internet of Things industry, the Internet of Vehicles industry, the banking industry, enterprise offices, stadiums and exhibition halls, concert halls, hotel rooms, dormitories, hospital wards, classrooms, shopping malls, squares, streets, production workshops and warehouses, etc. Of course, devices that support WLAN communication or sensing (such as access points or sites) can be sensor nodes in smart cities (such as smart water meters, smart electricity meters, and smart air monitoring nodes), smart devices in smart homes (such as smart cameras, projectors, displays, televisions, speakers, refrigerators, and washing machines), nodes in the Internet of Things (IoT), entertainment terminals (such as wearable devices for augmented reality (AR) and virtual reality (VR), smart devices in smart offices (such as printers, projectors, loudspeakers, and speakers), vehicle-to-everything (V2X) devices, infrastructure in daily life scenarios (such as vending machines, self-service navigation kiosks in supermarkets, self-service checkout machines, and self-service ordering machines), and equipment in large sports and music venues.

[0075] The solution provided in this application can be applied to scenarios where WLAN and cellular networks are shared in a hybrid manner. In this scenario, cellular networks and WLAN can use the same spectrum, which can improve spectrum efficiency. Figure 1 is a schematic diagram of the structure of a communication system provided in an embodiment of this application. As shown in Figure 1, the communication system may include a base station, an access point (AP), and terminal equipment.

[0076] For example, a base station can be a device or module located on the network side of a cellular network and having corresponding communication functions. A base station typically contains a communication module, circuit, or chip that performs the corresponding communication functions. The base station may also be configured with program instructions for performing the corresponding communication functions, as well as corresponding program instructions.

[0077] For example, the base station in this application embodiment can be an access device or network element deployed in a cellular network. For instance, the base station can be an access device or a device that supports the access device in realizing this function, such as a chip system or a combination device or component that can realize the base station function, and this device can be installed in the base station. As another example, the base station can be a base station controller (BSC), a base transceiver station (BTS), a home base station, a baseband unit (BBU), a wireless relay node, a wireless backhaul node, or an evolved node B (eNB) in a 4G system, or a next-generation eNB (ng-eNB) during the transition from 4G to 5G systems, or a next-generation base station (gNB) in a 5G system, or a RAN node that implements (partial) gNB functions. The RAN node can be a central unit (CU), a distributed unit (DU), a CU-control plane (CP), a CU-user plane (UP), or a radio unit (RU), etc. CU and DU can be configured separately or included in the same network element, such as a baseband unit (BBU). RU can be included in radio frequency equipment or radio frequency units, such as remote radio units (RRUs), active antenna units (AAUs), or remote radio heads (RRHs). Alternatively, network equipment can be satellite or various future forms of base stations. Furthermore, network equipment can be macro base stations, micro base stations, indoor stations, relay nodes, or donor nodes, etc.

[0078] An Access Point (AP) is a device with wireless communication capabilities that supports communication, sensing, or power transmission using WLAN protocols. It has the function of communicating or sensing with other devices in a WLAN network (such as non-access point stations (non-AP STAs) or other access points), and can also have the function of communicating, sensing, or transmitting power with other devices. Alternatively, an access point acts as a bridge connecting wired and wireless networks, primarily connecting various wireless network clients together and then connecting the wireless network to an Ethernet network. In a WLAN system, an access point can be called an Access Point Station (AP STA). This wireless communication device can be a complete device or a chip, processing system, or functional module installed within a complete device. Devices with these chips, processing systems, or functional modules can implement the methods and functions of the embodiments in this application under the control of the chips, processing systems, or functional modules. The AP in the embodiments of this application is a device that provides services to non-AP STAs and can support 802.11 series protocols or subsequent protocols. For example, an access point can be an access point for a terminal (such as a mobile phone) to enter a wired (or wireless) network, mainly deployed in homes, buildings, and parks, with a typical coverage radius of tens to hundreds of meters. Of course, it can also be deployed outdoors. Another example is that an AP can be a communication entity such as a communication server, router, switch, or bridge; APs can include various forms of macro base stations, micro base stations, and repeater stations. Of course, an AP can also be a chip, processing system, or module within the above-mentioned devices, thereby implementing the methods and functions of the embodiments of this application.

[0079] For example, a terminal device can be a device or module that accesses a cellular network or WLAN and has corresponding communication functions. The terminal device supports communication, sensing, or power transmission using WLAN protocols and has the ability to communicate, sense, or transmit power with other non-AP STAs or access points in the WLAN network. In a WLAN system, the terminal device can be referred to as a station (STA) or a non-access point station (non-AP STA). For example, a terminal device is any user communication device that allows a user to communicate with an AP or sense or transmit power, and thus communicate with the WLAN. This device with wireless communication functions can be a complete device, or it can be a chip, processing system, or functional module installed in a complete device. Devices with these chips, processing systems, or functional modules can implement the methods and functions of the embodiments of this application under the control of the chips, processing systems, or functional modules. For example, a terminal device can be a wireless communication chip, a wireless sensor, or a wireless communication terminal, and can also be referred to as a user. For example, the terminal device can be a mobile phone supporting Wi-Fi communication, a tablet computer supporting Wi-Fi communication, a set-top box supporting Wi-Fi communication, a smart TV supporting Wi-Fi communication, a smart wearable device supporting Wi-Fi communication, an in-vehicle communication device supporting Wi-Fi communication, and a computer supporting Wi-Fi communication, etc. Of course, the terminal device can also be a chip, processing system, or module from the various types of devices mentioned above, thereby implementing the methods and functions of the embodiments of this application.

[0080] Terminal equipment can also be called user equipment (UE), terminal, user device, access terminal, user unit, user station, mobile station, mobile station (MS), remote station, remote terminal, mobile device, user terminal, terminal unit, terminal station, terminal device, wireless communication equipment, user agent, or user device. Terminal equipment typically contains communication modules, circuits, or chips that perform corresponding communication functions. It may also contain program instructions configured to perform these communication functions.

[0081] For example, the terminal device in this application embodiment may be a mobile phone, a personal digital assistant (PDA) computer, a laptop computer, a tablet computer, a drone, a computer with wireless transceiver capabilities, a machine type communication (MTC) terminal, a virtual reality (VR) terminal, an augmented reality (AR) terminal, an internet of things (IoT) terminal, a wireless terminal in industrial control, a wireless terminal in self-driving, a wireless terminal in remote medical care, a wireless terminal in a smart grid, a wireless terminal in transportation safety, a wireless terminal in a smart city, a wireless terminal in a smart home (such as game consoles, smart TVs, smart speakers, smart refrigerators, and fitness equipment), a transport vehicle with wireless communication capabilities, a communication module, or a roadside unit (RSU) with terminal capabilities.

[0082] For example, as shown in Figure 2, the terminal device described above may include a WiFi module and a cellular module, and this terminal device may also be referred to as a dual-mode terminal. This terminal device communicates in a cellular network based on the cellular module, and can also detect and transmit WiFi signals through the WiFi module; that is, the terminal device has both cellular and Wi-Fi dual-mode capabilities.

[0083] For example, in the above communication system, the AP can communicate or sense a single terminal device, or the AP can communicate or sense multiple terminal devices simultaneously. Specifically, communication or sensing between the AP and multiple terminal devices can be further divided into downlink transmission where the AP simultaneously sends signals to multiple terminal devices, and uplink transmission where multiple terminal devices send signals to the AP. The communication protocols between the AP and terminal devices, between APs, and between terminal devices can support WLAN communication protocols. These protocols can include IEEE 802.11 series protocols, such as 802.11bn, and are also applicable to protocols after 802.11bn.

[0084] It is understood that the number of terminal devices, base stations, and access points shown in Figure 1 are merely examples. In specific implementations, the number of terminal devices, base stations, or access points may be more or less, and this application embodiment does not limit this.

[0085] In hybrid sharing scenarios, cellular networks and WLANs experience co-channel interference. For example, radio frequency signals transmitted by access points (APs) or terminal devices in the WLAN can interfere with terminal devices in the cellular network. For instance, as shown in Figure 1, terminal devices 1 and 3 are connected to the cellular network, while terminal devices 2 and 4 are connected to the WLAN. The WLAN AP, located indoors, cannot detect the cellular network signal and its downlink signal transmission can interfere with terminal device 3, which is located near the AP. Similarly, terminal device 2 may not detect the cellular signal, or it may be triggered by the AP to transmit an uplink signal, which can interfere with terminal device 1, which is located near terminal device 2. Therefore, how to avoid interference from WLAN radio frequency signals to terminal devices in the cellular network is a problem that urgently needs to be solved.

[0086] Therefore, embodiments of this application provide a communication method and a communication device that can prevent WLAN from interfering with terminal devices in a cellular network. The method provided in this application can be applied to the communication system shown in FIG1. ​​Alternatively, the method provided in this application can be applied to a first communication device, a second communication device, and a base station, wherein the first communication device can be an AP or terminal device in a WLAN, the second communication device can be a terminal device in a cellular network, and the base station is a base station in a cellular network.

[0087] The communication between different devices involved in the embodiments of this application can refer to direct communication between different devices (i.e., without the need for relaying or forwarding by other devices), or communication between different devices through other devices (i.e., requiring relaying or forwarding by other devices), or communication between a functional unit within a device and other devices through another functional unit. In other words, "sending information to…(terminal)" in this application can be understood as the destination of the information being the terminal. This can include sending information directly or indirectly to the terminal. "Receiving information from…(terminal)" can be understood as the source of the information being the terminal, and can include receiving information directly or indirectly from the terminal. Information may undergo necessary processing between the source and destination ends, such as format changes, digital-to-analog conversion, amplification, filtering, etc., but the destination end can understand the valid information from the source end. Similar expressions in this application can be understood in a similar way, and will not be elaborated further here.

[0088] Please refer to Figure 3A, which is a flowchart illustrating a communication method provided in an embodiment of this application. As shown in Figure 3A, the method includes, but is not limited to, the following steps.

[0089] 301, The second communication device detects radio frequency signal interference from the WLAN.

[0090] The second communication device is in a state of accessing a cellular network. For example, the second communication device can be a terminal device in a cellular network. This second communication device has dual-mode capabilities (cellular and WiFi), and can receive or transmit radio frequency (RF) signals from both the cellular network and the WLAN. The second communication device can periodically detect RF signals from the WLAN. Alternatively, when the cellular network service quality is poor, the second communication device can detect RF signals from the WLAN to determine if it is experiencing interference from the WLAN RF signals. For example, the second communication device can detect RF signals from the WLAN when the cellular network throughput decreases or latency increases (such as video stuttering).

[0091] For example, when the second communication device detects a radio frequency signal from a WLAN and the energy of the radio frequency channel is greater than the interference energy allowed by the second communication device, the second communication device determines that it has detected radio frequency signal interference from the WLAN.

[0092] In this embodiment, the radio frequency signal from the WLAN can also be referred to as a WiFi signal. This radio frequency signal can be any radio frequency signal transmitted by the first communication device; for example, it can include a beacon signal or a pilot signal.

[0093] 302, the second communication device sends a first indication message, and correspondingly, the first communication device receives the first indication message, which is used to indicate that the second communication device is being interfered with by the radio frequency signal of WLAN.

[0094] The first communication device is in a WLAN access state. For example, the first communication device can be an access point (AP) or a terminal device in the WLAN.

[0095] Upon detecting radio frequency signal interference from the WLAN, the second communication device sends the first indication information to indicate to the first communication device that the second communication device is experiencing interference from the radio frequency signal. Alternatively, the first indication information can be used to notify the first communication device that the second communication device is a terminal device in a cellular network and that the second communication device is experiencing radio frequency signal interference from the WLAN.

[0096] For example, the second communication device may directly send the first instruction information to the first communication device, or the second communication device may send the first instruction information to a relay device, which then forwards the first instruction information to the first communication device.

[0097] For example, the first instruction information may also instruct or request the first communication device to change the transmission strategy of the radio frequency signal.

[0098] In some possible implementations, the above-mentioned "first indication information is used to indicate that the second communication device is interfered with by the radio frequency signal of WLAN" can also be described as "first indication information is used to indicate that the first communication device changes the transmission strategy of radio frequency signal", or as "first indication information is used to request the first communication device to change the transmission strategy of radio frequency signal".

[0099] For example, this first indication information may also be referred to as interference notification information, interference coordination signal (ICS), etc. The second communication device can send this first indication information via a WLAN link.

[0100] For example, the first indication information may be carried in a first radio frame, which may be a request frame or a command frame. For instance, if the first radio frame is a request frame, it may be used to request the first communication device to change (or update) the transmission strategy of the radio frequency signal. Alternatively, if the first radio frame is a command frame, it may be used to command (or instruct) the first communication device to change (or update) the transmission strategy of the radio frequency signal.

[0101] For example, the first wireless frame includes at least one of the following: channel information of the second communication device, information on channels available to the first communication device, interference energy of radio frequency signal interference, interference energy allowed by the second communication device, a first difference, priority information, and the duty cycle of the second communication device; wherein, the first difference is the difference between the interference energy of the radio frequency signal interference and the interference energy allowed by the second communication device, and the priority information is the priority relationship between the WLAN and the cellular network. The channels available to the first communication device can be determined by the operating channel of the second communication device and the WLAN channels defined in the protocol or standard. For example, the channels available to the first communication device are channels in the WLAN defined in the protocol or standard other than the operating channel of the second communication device. The above information is used to assist the first communication device in changing its radio frequency signal transmission strategy.

[0102] For example, the second communication device may transmit the first wireless frame in a broadcast manner, i.e., the first wireless frame is a broadcast frame. Alternatively, the second communication device may transmit the first wireless frame in a unicast manner. The second communication device can obtain information about the first communication device (e.g., MAC address) through the received radio frequency signal, and send the first wireless frame to the first communication device based on the information of the first communication device.

[0103] As an example, the aforementioned first wireless frame can be a wireless frame defined in the protocol, such as a probe request frame. This probe request frame includes an information element (IE) or field carrying first indication information, which notifies the first communication device that the second communication device is experiencing radio frequency signal interference from the WLAN. This IE or field can be a newly added IE or field within the probe request frame.

[0104] As another example, the aforementioned first radio frame could be a newly added radio frame for interference notification. For instance, the first radio frame could be an action frame (e.g., Action NO ACK) used to notify the first communication device to change the transmission strategy of the radio frequency signal.

[0105] 303, the first communication device changes the transmission strategy of the radio frequency signal based on the first instruction information.

[0106] As an example, after receiving the first indication information, the first communication device updates its radio frequency (RF) signal transmission strategy to avoid interference with the second communication device. The RF signal detected by the second communication device originates from the first communication device. That is, after the first communication device sends an RF signal and the second communication device detects it, it sends an interference notification through the first indication information, causing the first communication device to change its RF signal transmission strategy.

[0107] As another example, the first communication device is a terminal device in a WLAN. After receiving the first indication information, the terminal device can send a fifth indication information to the AP. This fifth indication information indicates that the second communication device in the cellular network is experiencing radio frequency signal interference from the WLAN, or it instructs the AP to change its radio frequency signal transmission strategy. After receiving the fifth indication information, the AP instructs the terminal device to change the transmission strategy. The terminal device changes its radio frequency signal transmission strategy based on the AP's instruction and transmits radio frequency signals according to the changed strategy.

[0108] As an example, the first communication device is an access point (AP) in a WLAN, and the first communication device may change the transmission strategy of radio frequency signals by at least one of the following:

[0109] Reduce the transmission power of radio frequency signals;

[0110] Switch the channel for transmitting radio frequency signals;

[0111] Channel puncturing is performed based on the working channel of the second communication device;

[0112] Not transmitting radio frequency signals during the working cycle of the second communication device can also be called time-domain silence;

[0113] If the first communication device supports multiple links, disconnect the link whose operating frequency band or channel overlaps with the operating frequency band or channel of the second communication device.

[0114] As another example, the first communication device is a terminal device in a WLAN, and the first communication device may change the transmission strategy of radio frequency signals by at least one of the following:

[0115] Reduce the transmission power of radio frequency signals;

[0116] Switch the channel for transmitting radio frequency signals;

[0117] Channel puncturing is performed based on the working channel of the second communication device;

[0118] Not transmitting radio frequency signals during the working cycle of the second communication device can also be called time-domain silence;

[0119] Switch BSS;

[0120] Switch from WLAN to cellular network.

[0121] In one possible implementation, the first communication device can update the radio frequency (RF) signal transmission strategy based on priority information, which represents the priority relationship between the WLAN and the cellular network. For example, if the WLAN has a lower priority than the cellular network, the first communication device can update the RF signal transmission strategy by channel puncturing, time-domain muting, or channel switching. Alternatively, if the WLAN and cellular networks have the same priority, the first communication device can update the RF signal transmission strategy by reducing the transmission power of the RF signal. Or, if the WLAN has a higher priority than the cellular network, the first communication device may not need to update the RF signal transmission strategy.

[0122] In this implementation, the first communication device can determine whether to update the radio frequency signal transmission strategy and how to update the radio frequency signal transmission strategy based on priority information, which can ensure the communication quality of high-priority networks.

[0123] In one possible implementation, the first indication information is carried in a first radio frame, which is used to request the first communication device to update the transmission strategy of the radio frequency signal. The method shown in FIG3A further includes step 304.

[0124] 304, the first communication device sends a second wireless frame, and correspondingly, the second communication device receives the second wireless frame, which is used to respond to the transmission strategy of updating the radio frequency signal.

[0125] For example, the first wireless frame may be a request frame, used to request the first communication device to change the transmission strategy of the radio frequency signal. After receiving the first wireless frame, the first communication device determines to change the transmission strategy and sends a second wireless frame to the second communication device. The second wireless frame is used to respond to the request to change the transmission strategy of the radio frequency signal, that is, the second wireless frame is used to respond to the request of the first wireless frame.

[0126] As an example, if the second communication device does not receive the second wireless frame within a certain period of time after sending the first indication information, the second communication device may repeatedly send the first indication information.

[0127] In this embodiment of the application, after the second communication device in the cellular network detects radio frequency signal interference from the WLAN, it sends a first indication message. After receiving the first indication message, the first communication device in the WLAN changes the transmission strategy of the radio frequency signal, which can prevent the radio frequency signal from interfering with the second communication device.

[0128] In the embodiments of this application, "changing the transmission strategy of radio frequency signals" can be replaced by "changing the transmission strategy of radio frequency signals", "adjusting the transmission strategy of radio frequency signals", or "updating the transmission strategy of radio frequency signals", etc.

[0129] Please refer to Figure 3B, which is a flowchart illustrating another communication method provided in an embodiment of this application. As shown in Figure 3B, the method includes, but is not limited to, the following steps.

[0130] 301, The second communication device detects radio frequency signal interference from the WLAN.

[0131] It is understandable that the specific implementation of step 301 can be found in the relevant description in Figure 3A, and will not be elaborated here.

[0132] 305, the second communication device sends a third indication message, and the base station receives the third indication message accordingly. The third indication message is used to indicate that the second communication device is being interfered with by radio frequency signals from the WLAN.

[0133] For example, the third indication information can also be used to instruct the base station to change the transmission strategy of the channel of the second communication device. For instance, the third indication information is used to instruct the base station to change the operating bandwidth or operating channel of the second communication device.

[0134] As an example, if the second communication device does not receive a second wireless frame returned by the first communication device within a certain period of time after sending the first instruction information, it sends a third instruction information to the base station in the cellular network so that the base station changes the signal transmission strategy, thereby helping the terminal device avoid WLAN interference.

[0135] 306. The base station sends a fourth indication message, and the corresponding second communication device receives the fourth indication message. The fourth indication message indicates the BWP corresponding to the second communication device, and the bandwidth of the BWP does not overlap with that of the WLAN.

[0136] For example, the second communication device can also report the WLAN's operating channel or bandwidth to the base station. After receiving the third indication information, the base station can adopt the BWP operating mode to avoid the WLAN's operating channel or bandwidth, thereby preventing interference from the WLAN's radio frequency signals to the second communication device.

[0137] In one possible implementation, after receiving the third indication information, the base station can send a sixth indication information to the coexistence database. This sixth indication information is used to indicate that the terminal devices in the cellular network are being interfered with by the radio frequency signals of the WLAN.

[0138] This coexistence database is used to authorize the spectrum used by WLANs. For example, a WLAN can request spectrum from the coexistence database, and the WLAN can only use the spectrum after the coexistence database agrees.

[0139] In this implementation, a coexistence database can be used to make coexistence decisions between cellular networks and WLANs, thus preventing the second communication device in the cellular network from being interfered with by the radio frequency signals of the WLAN.

[0140] In this embodiment of the application, after detecting radio frequency signal interference from WLAN, the second communication device can send a third indication message to the base station so that the base station can adjust the operating bandwidth of the second communication device to avoid radio frequency signal interference from WLAN.

[0141] Optionally, the method shown in Figure 3B may further include step 302.

[0142] 302, the second communication device sends a first indication message, and correspondingly, the first communication device receives the first indication message, which is used to indicate that the second communication device is being interfered with by the radio frequency signal of WLAN.

[0143] For example, the second communication device may send the first indication information based on priority information. For instance, if the priority of the WLAN is lower than or equal to the priority of the cellular network, the second communication device sends the first indication information. Alternatively, if the priority of the WLAN is higher than the priority of the cellular network, the second communication device does not send the first indication information.

[0144] For a detailed explanation of the first instruction, please refer to the relevant description above, which will not be elaborated here.

[0145] Regarding the aforementioned first communication device changing the transmission strategy of radio frequency signals, the embodiments of this application also provide the following implementation methods:

[0146] Implementation Method 1: The first communication device performs channel puncture based on the channel information of the second communication device or the information of the available channels of the first communication device.

[0147] For example, the first indication information is carried in a first wireless frame, which includes channel information of the second communication device or information about channels available to the first communication device. When the first communication device performs channel puncturing, the channel of the second communication device is the punctured channel, while the channel available to the first communication device is the unpunctured channel.

[0148] As an example, the first communication device performs channel puncturing based on the channel information of the second communication device, and the channel of the second communication device is punctured.

[0149] As another example, the first communication device performs channel punching based on the channel information available to the first communication device, wherein the channels available to the first communication device are not punched, and other channels besides the channels available to the first communication device are punched.

[0150] In one possible implementation, the first wireless frame may further include information indicating whether a channel is punctured or not. Alternatively, the first wireless frame may include information indicating the bandwidth location for puncturing within the channel bandwidth of the first communication device.

[0151] For example, the first radio frame may include a bitmap, where each bit in the bitmap indicates whether a 20MHz channel has been punctured. For example, a bit value of 1 indicates that the 20MHz channel has been punctured, and a bit value of 0 indicates that the 20MHz channel has not been punctured. Alternatively, a bit value of 0 indicates that the 20MHz channel has been punctured, and a bit value of 1 indicates that the 20MHz channel has not been punctured.

[0152] In this implementation, the first communication device can change the transmission strategy of the radio frequency signal by channel puncturing, so that the working channel of the second communication device is punctured to avoid the radio frequency signal from interfering with the terminal equipment in the cellular network.

[0153] Method 2: The first communication device reduces the transmission power of the radio frequency signal.

[0154] In this implementation, after receiving the first instruction information, the first communication device reduces the transmission power of the radio frequency signal to reduce or avoid interference from the radio frequency signal to the second communication device. The radio frequency signal detected by the second communication device originates from the first communication device.

[0155] For example, the first instruction information also instructs the second communication device to reduce the transmission power of the radio frequency signal.

[0156] For example, the radio frequency signal transmitted by the first communication device before reducing the transmission power of the radio frequency signal is a first radio frequency signal, and the transmission power of the first radio frequency signal is a first transmission power. The radio frequency signal transmitted by the first communication device after reducing the transmission power of the radio frequency signal is a second radio frequency signal, and the transmission power of the second radio frequency signal is a second transmission power. The second transmission power is less than the first transmission power.

[0157] As one example, the first communication device reduces the transmission power of the radio frequency signal based on a first difference. This first difference is the difference between the interference energy of the radio frequency signal received by the second communication device and the interference energy allowed by the second communication device.

[0158] For example, the reduction in the transmission power of the radio frequency signal is greater than or equal to the first difference. For instance, the difference between the first transmission power and the second transmission power is greater than or equal to the first difference.

[0159] In this example, the second communication device also transmits one or more of the following: a first difference, the interference energy of the radio frequency signal interference, and the difference between the interference energy allowed by the second communication device. The first communication device receives one or more of the following: the first difference, the interference energy of the radio frequency signal interference, and the difference between the interference energy allowed by the second communication device. For example, the first indication information is carried in a first radio frame, which includes one or more of the following: the first difference, the interference energy of the radio frequency signal interference, and the difference between the interference energy allowed by the second communication device.

[0160] In this example, the first communication device reduces the transmission power of the radio frequency signal based on a first difference, so that the interference energy of the radio frequency signal after the reduction in transmission power is lower than the interference energy allowed by the second communication device, thereby avoiding interference of the radio frequency signal to the second communication device.

[0161] As another example, the first communication device reduces the transmission power of the radio frequency signal by a second difference. This second difference can be a fixed value, predefined by network configuration or protocol. The first communication device reduces the transmission power of the radio frequency signal by the second difference each time it receives a first indication message.

[0162] For example, the difference between the first transmission power and the second transmission power is equal to the second difference.

[0163] In this example, the first and second communication devices can dynamically reduce the transmission power of the radio frequency (RF) signal through multiple interactions to avoid interference from the RF signal to the second communication device. For instance, after the first communication device reduces the transmission power of the RF signal by a second differential value, if the second communication device still receives the RF signal from the first communication device, the second communication device can retransmit the first indication information until it can no longer detect RF signal interference from the first communication device, or until the interference energy of the RF signal interference is less than the interference energy allowed by the second communication device.

[0164] As another example, the first communication device reduces the transmission power of the radio frequency signal based on a third difference, which is the difference between the transmission power of the radio frequency signal and the minimum transmission power of the first communication device.

[0165] For example, the difference between the first transmission power and the second transmission power is less than or equal to the third difference, and the second transmission power is greater than or equal to the minimum transmission power of the first communication device.

[0166] In this example, if the transmission power of the radio frequency signal is less than the minimum transmission power of the first communication device, the receiver of the radio frequency signal will not be able to receive the radio frequency signal correctly. Therefore, the first communication device reduces the transmission power of the radio frequency signal based on the third difference to avoid the transmission power of the radio frequency signal being less than the minimum transmission power of the first communication device, thereby ensuring the normal communication of the first communication device.

[0167] The above illustrates several possible examples of how a first communication device reduces the transmission power of a radio frequency (RF) signal. In one possible implementation, the first communication device can also determine which method to use to reduce the RF signal transmission power based on priority information. For example, if the priority of the WLAN is the same as that of the cellular network, the first communication device can reduce the RF signal transmission power based on a third difference or a second difference. Similarly, if the priority of the WLAN is lower than that of the cellular network, the first communication device can reduce the RF signal transmission power based on a first difference.

[0168] In one possible implementation, the second communication device occupies multiple channels, and the transmission power of the radio frequency signal with reduced transmission power on the multiple channels is less than or equal to a first threshold, or the power spectral density of the radio frequency signal with reduced transmission power on the multiple channels is less than or equal to a second threshold.

[0169] In this implementation, the multiple channels are all or some of the channels occupied by the first communication device. The first communication device can reduce the transmission power of the radio frequency signals on the multiple channels, but can maintain the transmission power of the radio frequency signals on other channels. For example, the first communication device can transmit radio frequency signals on ten channels, and the second communication device occupies eight of them. Therefore, the first communication device can reduce the transmission power of the radio frequency signals on the eight channels, while the transmission power of the radio frequency signals on the other two channels can remain unchanged.

[0170] For example, the multiple channels are multiple 20MHz channels, that is, the second communication device occupies multiple 20MHz channels.

[0171] For example, the second communication device also transmits information indicating the plurality of channels, and correspondingly, the first communication device receives the information indicating the plurality of channels. For instance, the information indicating the plurality of channels may be carried in the first radio frame.

[0172] As an example, the first threshold can be indicated by a second communication device, that is, the second communication device instructs the first communication device that the transmission power of the radio frequency signal on the plurality of channels is less than or equal to the first threshold. For example, the second communication device can determine the first threshold based on the interference energy of the radio frequency signal interference.

[0173] As an example, the second threshold can be indicated by a second communication device, that is, the second communication device indicates that the power spectral density of the radio frequency signal of the first communication device on the plurality of channels is less than or equal to the second threshold. For example, the second communication device can determine the second threshold based on the interference energy of the radio frequency signal interference and the bandwidth of the plurality of channels.

[0174] In this implementation, the first communication device reduces the transmission power of the radio frequency signal to avoid interference with the second communication device.

[0175] Implementation Method 3: The first communication device does not transmit radio frequency signals during the working cycle of the second communication device.

[0176] For example, the way the first communication device changes the transmission strategy of the radio frequency signal in this manner can be called time-domain silence.

[0177] For example, the second communication device indicates its operating cycle to the first communication device. For instance, the first indication information is carried in a first wireless frame, which also includes the operating cycle of the second communication device.

[0178] For example, the first instruction information also instructs the first communication device not to transmit radio frequency signals during the operating cycle of the second communication device.

[0179] In this implementation, the first communication device does not send radio frequency signals during the working cycle of the second communication device, which can effectively prevent the second communication device from being interfered with by radio frequency signals from WLAN.

[0180] Implementation Method 4: The first communication device switches the channel for transmitting radio frequency signals.

[0181] In this implementation, the first communication device can switch the channel for transmitting radio frequency signals from the first channel to the second channel. The second channel does not overlap with the channel occupied by the second communication device in the frequency domain. Alternatively, the second channel does not overlap with the first channel in the frequency domain. Or, the distance between the second channel and the first channel in the frequency domain is greater than or equal to a third threshold. For example, the third threshold is 20MHz, meaning the distance between the second channel and the first channel in the frequency domain is greater than or equal to 20MHz.

[0182] For example, the first instruction information also instructs the first communication device to switch the channel for transmitting radio frequency signals.

[0183] In this implementation, after receiving the first instruction information, the first communication device switches the channel for transmitting radio frequency signals to avoid interference from the radio frequency signals to the second communication device.

[0184] Implementation Method 5: The first communication device is an AP in a WLAN. The first indication information comes from a terminal device in the WLAN. There are multiple links between the AP and the terminal device. The multiple links include the first link. The frequency band or channel corresponding to the first link overlaps with the frequency band or channel of the second communication device. The first communication device disconnects the first link or does not transmit radio frequency signals on the first link during the working cycle of the second communication device.

[0185] For example, the first indication information may be sent by the second communication device and forwarded to the AP by the terminal device. The terminal device may receive the first indication information from the second communication device and forward it to the AP. The terminal device may also forward the operating channel or frequency band of the second communication device or the operating cycle of the second communication device to the AP.

[0186] For example, the aforementioned AP or terminal device can be a multi-link device (MLD). An AP or terminal device simultaneously has multiple sites (such as APs or non-AP STAs), each operating on different frequency bands or channels. An AP or terminal device includes multiple affiliated sites, which can be physical sites or logical sites, and each site can operate on a link, a frequency band, or a channel, etc.

[0187] For example, multiple links exist between the AP and the terminal device, each link operating on a different frequency band and channel. After receiving the first indication information, the AP determines the frequency band or channel on which the second communication device operates and disconnects the first link that overlaps with the frequency band or channel on which the second communication device operates. Alternatively, the AP determines the operating cycle of the second communication device and does not transmit radio frequency signals on the first link during the operating cycle of the second communication device.

[0188] In this implementation, after receiving the first instruction information, the AP disconnects the first link that overlaps with the frequency band or channel of the second communication device, or does not transmit radio frequency signals on the first link during the working cycle of the second communication device, thereby avoiding interference from the radio frequency signals transmitted on the first link to the second communication device.

[0189] Implementation Method Six: The first communication device is a terminal device in a WLAN. The first communication device switches from the WLAN to a cellular network, which is used for interference coordination. For example, the cellular network can allocate different transmission resources to the first and second communication devices through base station scheduling, thereby avoiding mutual interference between the first and second communication devices.

[0190] For example, the first communication device has dual-mode capabilities of cellular and WiFi, and can receive or transmit radio frequency signals from cellular networks and WLANs. After receiving the first indication information, the first communication device can detect the cellular network signal to access the cellular network. For example, the first communication device can perform cell search, cell measurement, etc.

[0191] For example, after determining that it is switching from a WLAN to a cellular network, or after the first communication device switches from a WLAN to a cellular network, it may send a second instruction message to an AP, which instructs the first communication device to switch from a WLAN to a cellular network. The AP is the AP associated with the first communication device.

[0192] In this implementation, when the first communication device receives the first instruction information, it switches from WLAN to cellular network, and the cellular network coordinates the interference, which can avoid mutual interference between the first communication device and the second communication device.

[0193] Implementation Method 7: The first communication device is a terminal device in a WLAN, and the first communication device switches BSS. For example, the first communication device switches from a first BSS to a second BSS, and the first BSS and the second BSS occupy different channels.

[0194] For example, after receiving the first instruction information, the first communication device can detect beacon frames of other APs besides its associated AP, and switch the BSS if beacon frames of other APs are detected.

[0195] For example, the first communication device is currently associated with the first access point (AP). After receiving the first indication information, the terminal device detects a beacon frame from the second BSS. If a beacon frame from the second BSS is detected, the terminal device associates with the AP in the second BSS and switches from the first BSS to the second BSS.

[0196] In this embodiment of the application, after receiving the first instruction information, the first communication device switches to a second BSS that is different from the channel occupied by the first BSS, thereby avoiding interference from radio frequency signals to the second communication device.

[0197] The above illustrates several implementation methods for updating the transmission strategy of the radio frequency signal by the first communication device. The first communication device can adopt one or more implementation methods to update the transmission strategy of the radio frequency signal.

[0198] Please refer to Figure 4, which is a flowchart illustrating another communication method provided in an embodiment of this application. This method is applied to terminal devices in cellular networks and access points (APs) in WLANs. The terminal device can be the second communication device in the method shown in Figure 3A or Figure 3B, and the AP can be the first communication device in the method shown in Figure 3A or Figure 3B. As shown in Figure 4, the method includes, but is not limited to, the following steps.

[0199] 401, The terminal device detected radio frequency signal interference from WLAN.

[0200] It is understandable that the specific implementation of step 401 can be found in Figure 3A, and will not be repeated here.

[0201] 402, The terminal device sends a first instruction message, and the AP receives the first instruction message accordingly.

[0202] It is understandable that the specific implementation of step 402 can be referred to in Figure 3A, and will not be repeated here.

[0203] 403, The AP changes the transmission strategy of the radio frequency signal based on the first indication information.

[0204] It is understandable that the specific implementation of step 403 can be found in Figure 3A and the several implementation methods shown above, and will not be repeated here.

[0205] Optionally, the first indication information is carried in a first radio frame, which is used to request a change in the transmission strategy of the radio frequency signal. The method shown in Figure 4 further includes step 404.

[0206] 404, the AP sends a second radio frame, and the corresponding terminal device receives the second radio frame. This second radio frame is used to respond to the updated radio frequency signal transmission strategy.

[0207] In this embodiment of the application, when the terminal device detects the radio frequency signal of WLAN, it can directly send the first indication information to the AP, which updates the transmission strategy of the radio frequency signal, thereby avoiding interference of the WLAN radio frequency signal to the terminal device.

[0208] Please refer to Figure 5, which is a flowchart illustrating another communication method provided in an embodiment of this application. This method can be applied to a first terminal device, a second terminal device, and an access point (AP). The first terminal device is a terminal device in a cellular network, the second terminal device is a terminal device in a WLAN, and the AP is an access point (AP) in a WLAN. The first terminal device can be the second communication device in the method shown in Figure 3A or Figure 3B, and the AP can be the first communication device in the method shown in Figure 3A or Figure 3B. As shown in Figure 5, the method includes, but is not limited to, the following steps.

[0209] 501, The first terminal device detected radio frequency signal interference from WLAN.

[0210] It is understandable that the specific implementation of step 501 can be found in Figure 3A, and will not be repeated here.

[0211] 502, the first terminal device sends a first instruction message, and correspondingly, the second terminal device receives the first instruction message.

[0212] For example, the first terminal device and the second terminal device are located within the coverage area of ​​the same BSS. The first terminal device can broadcast the first indication information via a WLAN link to notify the user of any interference. The second terminal device, located in the same BSS as the first terminal device, receives the first indication information.

[0213] It is understandable that the specific implementation of step 502 can be referred to the specific implementation of step 302 in Figure 3A, which will not be repeated here.

[0214] 503, the second terminal device forwards the first instruction information, and correspondingly, the AP receives the first instruction information.

[0215] For example, the first indication information is carried in a first radio frame, and the second terminal device can directly forward the first radio frame. Alternatively, the second terminal device can carry the first indication information in any radio frame. For example, an IE or field can be added to the radio frame sent to the AP to carry the first indication information.

[0216] 504, the AP changes the transmission strategy of the radio frequency signal based on the first indication information.

[0217] As an example, an AP can alter the transmission strategy of radio frequency signals throughout the BSS. For instance, sites within the BSS may not use the operating channels of the terminal equipment.

[0218] As another example, the AP can change the transmission strategy of the radio frequency (RF) signal of the second terminal device. In this example, the first indication information is forwarded by the second terminal device, indicating that the RF signal transmitted by the second terminal device may interfere with the terminal device. Therefore, the AP can only change the transmission strategy of the second terminal device's RF signal. For example, the AP instructs the second terminal device to reduce the transmission power of its RF signal. Alternatively, the AP supports multiple links, where the channel or frequency band corresponding to the first link overlaps with the operating channel or frequency band of the terminal device, and the AP does not use the first link during communication with the second terminal device. Another example is that the second terminal device also forwards its duty cycle to the AP. The AP can instruct the second terminal device to enter power-save mode during its duty cycle, in which the second terminal device does not transmit RF signals.

[0219] For example, after changing the transmission strategy of the radio frequency signal, the AP can also indicate the changed transmission strategy to the second terminal device so that the second terminal device can transmit the radio frequency signal based on the changed transmission strategy.

[0220] It is understandable that the specific implementation of step 504 can be referred to the specific implementation of step 303 in Figure 3A and the several implementation methods shown above, which will not be repeated here.

[0221] In this embodiment, due to the existence of a hidden terminal scenario, the AP may not be able to receive the first indication information sent by the first terminal device, or the AP may be interacting with other devices and therefore not receive the interference notification sent by the first terminal device. Therefore, the second terminal device can forward the first indication information to assist the terminal device in providing interference notification, enabling the AP to update its radio frequency signal transmission strategy, thereby avoiding interference from the WLAN's radio frequency signal to the terminal device. Alternatively, when the second terminal device cannot change its radio frequency signal transmission strategy, it can forward the first indication information to the AP to enable the AP to change its radio frequency signal transmission strategy.

[0222] Please refer to Figure 6, which is a flowchart illustrating another communication method provided in an embodiment of this application. This method can be applied to a first terminal device, a second terminal device, and an access point (AP). The first terminal device is a terminal device in a cellular network, the second terminal device is a terminal device in a WLAN, and the AP is an access point (AP) in a WLAN. The first terminal device can be a second communication device as shown in Figure 3A or Figure 3B, and the second terminal device can be a first communication device as shown in Figure 3A or Figure 3B. As shown in Figure 6, the method includes, but is not limited to, the following steps.

[0223] 601, The first terminal device detects radio frequency signal interference from WLAN.

[0224] It is understandable that the specific implementation of step 601 can be referred to in Figure 3A, and will not be repeated here.

[0225] 602, the first terminal device sends a first instruction message, and correspondingly, the second terminal device receives the first instruction message.

[0226] It is understandable that the specific implementation of step 602 can be referred to in Figure 3A, and will not be repeated here.

[0227] 603, the second terminal device changes the transmission strategy of the radio frequency signal based on the first instruction information.

[0228] For example, the second terminal device changing the transmission strategy of the radio frequency signal may include at least one of the following:

[0229] Reduce the transmission power of radio frequency signals;

[0230] Switch the channel for transmitting radio frequency signals;

[0231] Channel puncturing is performed based on the working channel of the second communication device;

[0232] No radio frequency signals are transmitted during the working cycle of the second communication device;

[0233] Switch BSS;

[0234] Switch to cellular network.

[0235] It is understandable that the specific implementation of step 603 can be found in Figure 3A and the several implementation methods shown above, and will not be repeated here.

[0236] Optionally, the method shown in Figure 6 further includes step 604.

[0237] 604. The second terminal device sends a second indication message to the AP. Correspondingly, the AP receives the second indication message, which indicates the modified radio frequency signal transmission strategy of the second terminal device. Alternatively, the second indication message indicates that the second terminal device has changed the radio frequency signal transmission strategy. Or, the second indication message instructs the second terminal device to determine whether to change the radio frequency signal transmission strategy.

[0238] For example, the second instruction information instructs the second terminal device to change its radio frequency (RF) signal transmission strategy because it has received an interference notification from a terminal device in the cellular network. After receiving this second instruction information, the access point (AP) can determine whether to change the RF signal transmission strategy. For instance, the second terminal device may also send its operating channel to the AP. The AP can then determine whether it is occupying the terminal device's operating channel, thereby determining whether to change the RF signal transmission strategy. If the AP is occupying the terminal device's operating channel, the AP updates its RF signal transmission strategy. This ensures that the terminal device is not interfered with by the WLAN's RF signals.

[0239] In this embodiment of the application, after the second terminal device receives the first instruction information, it can directly update the transmission strategy of the radio frequency signal, which can perform interference avoidance more quickly and with better timeliness.

[0240] The following describes the communication device provided in the embodiments of this application.

[0241] This application divides the communication device into functional modules according to the above method embodiments. For example, each function can be divided into its own functional modules, or two or more functions can be integrated into one processing module. The integrated modules can be implemented in hardware or as software functional modules. It should be noted that the module division in this application is illustrative and only represents one logical functional division; other division methods may be used in actual implementation. The communication device of the embodiments of this application will be described in detail below with reference to Figures 7 to 9.

[0242] Figure 7 is a schematic diagram of a communication device provided in an embodiment of this application. As shown in Figure 7, the communication device includes a processing module 701 and a transceiver module 702. The transceiver module 702 can implement corresponding communication functions, and the processing module 701 is used to implement corresponding processing functions. For example, the transceiver module 702 can also be called an interface, a communication interface, or a communication module, etc.

[0243] In some embodiments of this application, the communication device can be used to perform the actions performed by the first communication device in the above method embodiments. In this case, the first communication device can be the Wi-Fi device itself (such as a terminal device or AP in a WLAN) or a chip or functional module that can be configured in the device. The transceiver module 702 is used to perform the transceiver-related operations of the first communication device in the above method embodiments, and the processing module 701 is used to perform the processing-related operations of the first communication device in the above method embodiments.

[0244] For example, the transceiver module 702 is used to receive first indication information; the processing module 701 is used to change the transmission strategy of the radio frequency signal based on the first indication information.

[0245] Optionally, the transceiver module 702 is also used to transmit a second wireless frame.

[0246] Optionally, the transceiver module 702 is also used to send a second instruction message.

[0247] It is understood that the specific implementation of the first indication information, the second wireless frame, the second indication information, and the transmission strategy for changing the radio frequency signal can be referred to the relevant description in the above method embodiments, and will not be detailed here.

[0248] For example, transceiver module 702 may include radio frequency module, antenna module, etc. For example, transceiver module 702 may include pin module, etc.

[0249] Reusing Figure 7, in some other embodiments of this application, the communication device can be used to perform the actions performed by the second communication device (or terminal device in a cellular network) in the above method embodiments. In this case, the communication device can be the terminal device itself or a chip or functional module configurable in the terminal device. The transceiver module 702 is used to perform the transceiver-related operations of the second communication device in the above method embodiments, and the processing module 701 is used to perform the processing-related operations of the second communication device in the above method embodiments.

[0250] For example, the processing module 701 is used to detect radio frequency signal interference from WLAN; the transceiver module 702 is used to send first indication information.

[0251] Optionally, the transceiver module 702 is also used to receive a second wireless frame.

[0252] Optionally, the transceiver module 702 is also used to send third instruction information and receive fourth instruction information.

[0253] It is understood that the specific implementation of the first indication information, the second wireless frame, the third indication information, and the fourth indication information can be referred to the relevant descriptions in the above method embodiments, and will not be detailed here.

[0254] For example, transceiver module 702 may include radio frequency module, antenna module, etc. For example, transceiver module 702 may include pin module, etc.

[0255] Reusing Figure 7, in some other embodiments of this application, the communication device can be used to perform the actions performed by the base station in the above method embodiments. In this case, the communication device can be the base station itself or a chip or functional module configurable in the base station. The transceiver module 702 is used to perform the transceiver-related operations of the base station in the above method embodiments, and the processing module 701 is used to perform the processing-related operations of the base station in the above method embodiments.

[0256] For example, the transceiver module 702 is used to receive third instruction information and send fourth instruction information.

[0257] It is understood that specific descriptions of the third and fourth indication information can be found in the relevant descriptions in the above method embodiments, and will not be elaborated here.

[0258] Optionally, in the above embodiments, the communication device may further include a storage module, which can be used to store instructions and / or data. The processing module 701 can read the instructions and / or data from the storage module to enable the communication device to implement the aforementioned method embodiments. For example, the storage module can store the radio frequency signal transmission strategy, etc., as shown above.

[0259] For details regarding the specific explanations of each term, noun, or step in the above embodiments, please refer to the descriptions in the above method embodiments; they will not be detailed here.

[0260] The specific descriptions of the transceiver module and processing module shown in the above embodiments are merely examples. For the specific functions or execution steps of the transceiver module and processing module, please refer to the above method embodiments, which will not be described in detail here.

[0261] The communication device of this application embodiment has been described above. The following describes possible product forms of the communication device. Any product possessing the functions of the communication device described in FIG. 6 above falls within the protection scope of this application embodiment. The following description is merely illustrative and does not limit the product form of the communication device of this application embodiment to this.

[0262] In one possible implementation, in the communication device shown in FIG7, the processing module 701 can be one or more processors, and the transceiver module 702 can be a transceiver, or the transceiver module 702 can also be a transmitting module and a receiving module. The transmitting module can be a transmitter, and the receiving module can be a receiver. The transmitting module and the receiving module are integrated into one device, such as a transceiver. In the embodiments of this application, the processor and the transceiver can be coupled, etc., and the connection method of the processor and the transceiver is not limited in the embodiments of this application. In the process of executing the above method, the process of sending information in the above method can be the process of the processor outputting the above information. When outputting the above information, the processor outputs the above information to the transceiver so that the transceiver can transmit it. After the above information is output by the processor, it may need to undergo other processing before reaching the transceiver. Similarly, the process of receiving information in the above method can be the process of the processor receiving the input above information. When the processor receives the input information, the transceiver receives the above information and inputs it into the processor. Furthermore, after the transceiver receives the above information, the above information may need to undergo other processing before being input into the processor.

[0263] As shown in Figure 8, the communication device 80 includes one or more processors 820 and transceivers 810.

[0264] In some embodiments of this application, the communication device can be used to execute the steps, methods, or functions performed by the first communication device (such as a terminal device or AP in a WLAN). For example, the processor 820 can be used to execute the functions or steps implemented by the processing module 701 shown in FIG. 7, and the transceiver 810 can be used to execute the functions or steps implemented by the transceiver module 702 shown in FIG. 7. Detailed descriptions of the processor 820 and transceiver 810 can be found in FIG. 7 or the method embodiments shown above, and will not be elaborated further here.

[0265] In other embodiments of this application, the communication device is used to execute the steps, methods, or functions executed by the second communication device described above. For example, the processor 820 can be used to execute the functions or steps implemented by the processing module 701 shown in FIG. 7, and the transceiver 810 can be used to execute the functions or steps implemented by the transceiver module 702 shown in FIG. 7. Detailed descriptions of the processor 820 and the transceiver 810 can be found in FIG. 7 or the method embodiments shown above, and will not be elaborated further here.

[0266] In various implementations of the communication device shown in Figure 8, the transceiver may include a receiver for performing a receiving function (or operation) and a transmitter for performing a transmitting function (or operation). The transceiver is also used to communicate with other devices / appliances via a transmission medium.

[0267] Optionally, the communication device 80 may further include one or more memories 830 for storing program instructions and / or data. The memory 830 is coupled to the processor 820. The coupling in this embodiment is an indirect coupling or communication connection between communication devices, units, or modules, and can be electrical, mechanical, or other forms, used for information exchange between the communication devices, units, or modules. The processor 820 may operate in conjunction with the memory 830. The processor 820 may execute program instructions stored in the memory 830. Optionally, at least one of the above-mentioned memories may be included in the processor.

[0268] This application embodiment does not limit the specific connection medium between the transceiver 810, processor 820, and memory 830. In this application embodiment, the memory 830, processor 820, and transceiver 810 are connected via a bus 840 in Figure 8. The bus is represented by a thick line in Figure 8. The connection methods between other components are only for illustrative purposes and are not intended to be limiting. The bus can be divided into address bus, data bus, control bus, etc. For ease of illustration, only one thick line is used in Figure 8, but this does not mean that there is only one bus or one type of bus.

[0269] In the embodiments of this application, the processor may be a general-purpose processor, a digital signal processor, an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc., and can implement or execute the various methods, steps, and logic block diagrams disclosed in the embodiments of this application. The general-purpose processor may be a microprocessor or any conventional processor. The steps of the methods disclosed in the embodiments of this application can be directly manifested as being executed by a hardware processor, or being executed by a combination of hardware and software modules within the processor.

[0270] In this application embodiment, the memory may include, but is not limited to, non-volatile memory such as hard disk drive (HDD) or solid-state drive (SSD), random access memory (RAM), erasable programmable read-only memory (EPROM), read-only memory (ROM), or compact disc read-only memory (CD-ROM), etc. Memory is any storage medium capable of carrying or storing program code having instruction or data structure forms, and capable of being read and / or written by a computer (such as the communication device shown in this application), but is not limited to this. The memory in this application embodiment may also be a circuit or any other device capable of implementing storage functions, used to store program instructions and / or data.

[0271] The processor 820 is primarily used for processing communication protocols and data, controlling the entire communication device, executing software programs, and processing software program data. The memory 830 is primarily used for storing software programs and data. The transceiver 810 may include control circuitry and an antenna. The control circuitry is primarily used for converting baseband signals to radio frequency signals and processing radio frequency signals. The antenna is primarily used for transmitting and receiving radio frequency signals in the form of electromagnetic waves. Input / output devices, such as touchscreens, displays, and keyboards, are primarily used for receiving user input data and outputting data to the user.

[0272] When the communication device is powered on, the processor 820 can read the software program in the memory 830, interpret and execute the instructions of the software program, and process the data of the software program. When data needs to be transmitted wirelessly, the processor 820 performs baseband processing on the data to be transmitted and outputs the baseband signal to the radio frequency (RF) circuit. The RF circuit processes the baseband signal and transmits the RF signal outward in the form of electromagnetic waves through the antenna. When data is sent to the communication device, the RF circuit receives the RF signal through the antenna, converts the RF signal into a baseband signal, and outputs the baseband signal to the processor 820. The processor 820 converts the baseband signal into data and processes the data.

[0273] In another implementation, the radio frequency circuitry and antenna can be set up independently of the processor performing baseband processing. For example, in a distributed scenario, the radio frequency circuitry and antenna can be arranged remotely, independent of the communication device.

[0274] The communication device shown in this application embodiment may also have more components than those in Figure 8, and this application embodiment does not limit this. The methods executed by the processor and transceiver shown above are only examples, and the specific steps executed by the processor and transceiver can be referred to the methods described above.

[0275] In another possible implementation, in the communication device shown in Figure 7, the processing module 701 can be one or more logic circuits, and the transceiver module 702 can be an input / output interface, or a communication interface, or an interface circuit, or an interface, etc. Alternatively, the transceiver module 702 can also be a transmitting module and a receiving module. The transmitting module can be an output interface, and the receiving module can be an input interface. The transmitting module and the receiving module are integrated into one module, such as an input / output interface. As shown in Figure 9, the communication device shown in Figure 9 includes a logic circuit 901 and an interface 902. That is, the above-mentioned processing module 701 can be implemented using the logic circuit 901, and the transceiver module 702 can be implemented using the interface 902. Among them, the logic circuit 901 can be a chip, a processing circuit, an integrated circuit, or a system-on-a-chip (SoC) chip, etc., and the interface 902 can be a communication interface, an input / output interface, pins, etc. For example, Figure 9 illustrates the above-mentioned communication device as a chip, which includes the logic circuit 901 and the interface 902.

[0276] In this embodiment, the logic circuit and the interface can also be coupled to each other. The specific connection method of the logic circuit and the interface is not limited in this embodiment. For example, the logic circuit 901 can be used to execute the functions or steps implemented by the processing module 701 shown in FIG. 7, and the interface 902 can be used to execute the functions or steps implemented by the transceiver module 702 shown in FIG. 7. For a detailed description of the logic circuit 901 and the interface 902, please refer to FIG. 7 or the method embodiment shown above, which will not be detailed here.

[0277] The communication device shown in the embodiments of this application can implement the method provided in the embodiments of this application in hardware form, or it can implement the method provided in the embodiments of this application in software form, etc., and the embodiments of this application do not limit it in this way.

[0278] Furthermore, embodiments of this application also provide a communication system, which includes a first communication device and a second communication device, both of which can be used to perform the methods in any of the foregoing embodiments. Exemplarily, the communication system may further include a base station, and the first communication device, the second communication device, and the base station can be used to perform the methods in any of the foregoing embodiments.

[0279] This application also provides a computer program for implementing the operations and / or processes performed by various communication devices in the methods provided in this application.

[0280] This application also provides a computer-readable storage medium storing computer code that, when executed on a computer, causes the computer to perform the operations and / or processes performed by various communication devices in the methods provided in this application.

[0281] This application also provides a computer program product, which includes computer code or a computer program that, when run on a computer, causes the operations and / or processes performed by various communication devices in the method provided in this application to be executed.

[0282] In the embodiments provided in this application, it should be understood that the disclosed systems, communication devices, and methods can be implemented in other ways. For example, the communication device embodiments described above are merely illustrative. For instance, the division of modules is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple modules or components may be combined or integrated into another system, or some features may be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be indirect coupling or communication connection through some interfaces, communication devices, or modules, or it may be an electrical, mechanical, or other form of connection.

[0283] The modules described as separate components may or may not be physically separate. The components shown as modules may or may not be physical modules; that is, they may be located in one place or distributed across multiple network modules. Some or all of the modules can be selected according to actual needs to achieve the technical effects of the solutions provided in the embodiments of this application.

[0284] Furthermore, the functional modules in the various embodiments of this application can be integrated into one processing module, or each module can exist physically separately, or two or more modules can be integrated into one module. The integrated modules described above can be implemented in hardware or as software functional modules.

[0285] If the integrated module is implemented as a software functional module and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a readable storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned readable storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0286] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A communication method, characterized in that, Applied to a first communication device, wherein the first communication device is in a state of accessing a wireless local area network (WLAN), the method includes: Receive first indication information, the first indication information being used to indicate that the second communication device is being interfered with by the radio frequency signal of the WLAN, and the second communication device is in a state of accessing the cellular network; Based on the first indication information, the transmission strategy of the radio frequency signal is changed.

2. The method according to claim 1, characterized in that, The first indication information is carried in a first wireless frame, the first wireless frame including channel information of the second communication device or information about channels available to the first communication device, and the step of changing the transmission strategy of the radio frequency signal based on the first indication information includes: Channel punching is performed based on the channel information of the second communication device or the channel information available to the first communication device.

3. The method according to claim 1, characterized in that, The method of changing the transmission strategy of the radio frequency signal based on the first indication information includes: Reduce the transmission power of radio frequency signals.

4. The method according to claim 3, characterized in that, The second communication device occupies multiple channels, and the transmission power of the radio frequency signal with reduced transmission power on the multiple channels is less than or equal to a first threshold, or the power spectral density of the radio frequency signal with reduced transmission power on the multiple channels is less than or equal to a second threshold.

5. The method according to claim 4, characterized in that, The multiple channels are multiple 20MHz channels.

6. The method according to claim 1, characterized in that, The method of changing the transmission strategy of the radio frequency signal based on the first indication information includes: No radio frequency signals are transmitted during the operating cycle of the second communication device.

7. The method according to claim 1, characterized in that, The method of changing the transmission strategy of the radio frequency signal based on the first indication information includes: Switch the channel for transmitting radio frequency signals.

8. The method according to claim 1, characterized in that, The first communication device is an access point (AP) in the WLAN. The first indication information comes from a terminal device in the WLAN. Multiple links exist between the AP and the terminal device. The multiple links include a first link. The frequency band or channel corresponding to the first link overlaps with the frequency band or channel in which the second communication device operates. The step of changing the transmission strategy of the radio frequency signal based on the first indication information includes: Disconnect the first link or do not transmit radio frequency signals on the first link during the operating cycle of the second communication device.

9. The method according to claim 1, characterized in that, The first communication device is a terminal device in the WLAN, and the step of changing the transmission strategy of the radio frequency signal based on the first indication information includes: Switching from the WLAN to the cellular network, which is used for interference coordination.

10. The method according to claim 9, characterized in that, The method further includes: Send a second instruction message to the AP, the second instruction message being used to instruct the first communication device to switch from the WLAN to the cellular network.

11. The method according to claim 1, characterized in that, The first communication device is a terminal device in the WLAN, and the step of changing the transmission strategy of the radio frequency signal based on the first indication information includes: The basic service set (BSS) of the terminal device is switched from the first BSS to the second BSS, where the first BSS and the second BSS occupy different channels.

12. The method according to any one of claims 1-11, characterized in that, The first indication information is carried in a first wireless frame, which includes at least one of the following: channel information of the second communication device, information on channels available to the first communication device, interference energy of the radio frequency signal interference, interference energy allowed by the second communication device, a first difference, priority information, and the operating cycle of the second communication device; wherein, the first difference is the difference between the interference energy of the radio frequency signal interference and the interference energy allowed by the second communication device, and the priority information is the priority relationship between the WLAN and the cellular network.

13. The method according to any one of claims 1-12, characterized in that, The first indication information is carried in a first radio frame, the first radio frame being used to request the first communication device to change the transmission strategy, and the method further includes: A second wireless frame is sent, which is used to respond to the change in the transmission strategy.

14. A communication method, characterized in that, Applied to a second communication device, the second communication device being in a state of accessing a cellular network, the method includes: Detect radio frequency signal interference from wireless local area network (WLAN); Send a first indication message, which is used to indicate that the second communication device is being interfered with by the radio frequency signal.

15. The method according to claim 14, characterized in that, The first indication information is carried in a first wireless frame, which includes at least one of the following: channel information of the second communication device, information on the channels available to the first communication device in the WLAN, interference energy of the radio frequency signal interference, interference energy allowed by the second communication device, a first difference, priority information, and the operating cycle of the second communication device; wherein, the first difference is the difference between the interference energy of the radio frequency signal interference and the interference energy allowed by the second communication device, and the priority information is the priority relationship between the WLAN and the cellular network.

16. The method according to claim 14 or 15, characterized in that, The first indication information is carried in a first radio frame, which is used to request a first communication device in the WLAN to change the transmission strategy of the radio frequency signal. The method further includes: Receive a second wireless frame, which is used in response to a change in the transmission strategy.

17. The method according to any one of claims 14-16, characterized in that, The method further includes: If no second wireless frame is received within a certain period after the first indication information is sent, a third indication information is sent to the base station in the cellular network, the third indication information being used to indicate that the second communication device is being interfered with by the radio frequency signal; Receive a fourth indication message, which indicates a portion of the bandwidth BWP corresponding to the second communication device, wherein the BWP does not overlap with the bandwidth of the WLAN.

18. A communication method, characterized in that, The method, applied to a base station in a cellular network, includes: Receive a third indication message, the third indication message being used to indicate that the second communication device in the cellular network is being interfered with by radio frequency signals from a wireless local area network (WLAN); Send a fourth indication message, which indicates the portion of the bandwidth BWP corresponding to the second communication device, wherein the BWP does not overlap with the bandwidth of the WLAN.

19. A communication device, characterized in that, Includes modules for performing the method according to any one of claims 1 to 18.

20. A communication device, characterized in that, Includes a processor for performing the method as described in any one of claims 1-18.

21. A communication device, characterized in that, Includes logic circuits and interfaces, wherein the logic circuits and interfaces are coupled; The interface is used for inputting and / or outputting information, and the logic circuit is used for performing the method as described in any one of claims 1-18.

22. A computer-readable storage medium, characterized in that, The computer-readable storage medium is used to store a computer program, which, when executed, performs the method as described in any one of claims 1-18.

23. A computer program product, characterized in that, When the computer program product is executed, the method as described in any one of claims 1-18 is performed.

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