Service communication method and device applied to FTTR networking

Abstract

The application provides a service communication method and device applied to FTTR networking, which decouples radar signal monitoring and service communication in networking, and uses another 5GHz communication system in addition to the 5GHz communication system used for service communication in networking for radar signal monitoring, the another 5GHz communication system selects a channel for radar signal monitoring to complete radar silence operation of the channel in advance, when a radar signal is found on the channel used for service communication, the service communication can quickly switch to the channel used for radar monitoring to continue service communication, since the another 5GHz communication system performs radar silence operation in advance, thus effectively solving the long-time service interruption caused by the 5GHz communication system entering radar silence after channel switching in the related art. The application is suitable for various IP network environments and various network topologies, and can be used in traditional copper cable access and wireless access scenes, and can also be used in optical fiber access scenes, including FTTR (fiber to the room) full optical access network.

Description

Technical Field

[0001] This application relates to the field of communication technology, and in particular to a service communication method and apparatus for FTTR networking. Background Technology

[0002] In the 5GHz wireless communication band, some spectrum resources were originally reserved for critical systems such as aviation and meteorological monitoring. To alleviate the shortage of civilian Wi-Fi spectrum resources, international radio management regulations allow network devices to share these frequency bands under strict conditions. The core requirement for sharing these frequency bands is that network devices must support the DFS (Dynamic Frequency Selection) mechanism, possessing the ability to detect radar signals in real time and actively avoid them to ensure no interference with radar systems.

[0003] When a network device detects a radar signal on a channel currently used for service communication, it must immediately cease all service transmissions on that channel and be prohibited from using the channel for the subsequent radar avoidance period. If the network device then switches to another DFS channel, it must first perform radar silence on that DFS channel. During radar silence, the network device is prohibited from sending any service packets. Given that radar silence durations can range from 1 minute to 10 or even 30 minutes, the radar silence operation following channel switching causes prolonged service communication interruptions. In an FTTR (Fiber to the Room) all-optical networking architecture, since the FTTR network may carry highly latency- and continuity-sensitive services such as video and cloud gaming, a radar silence triggered by DFS at the gateway can affect local area services and potentially degrade the overall network service quality, impacting the user's communication experience. Summary of the Invention

[0004] In view of this, in order to solve the above-mentioned technical problems, this application provides a service communication method, apparatus, device and readable storage medium for FTTR networking, which can effectively solve the problem of long-term service communication interruption caused by radar silent operation due to channel switching, and improve the continuity of service communication.

[0005] Specifically, this application is implemented through the following technical solution: According to a first aspect of the embodiments of this application, a service communication method applied to an FTTR network is provided. The method is applied to a first 5GHz communication system for service communication in the network, and the network further includes a second 5GHz communication system for radar signal monitoring. The method includes: If a radar signal is detected on the first channel used for business communication, then the second channel information of the second channel used for radar signal monitoring in the second 5GHz communication system is obtained; Based on the second channel information, the service communication is switched from the first channel to the second channel, and a first switching notification is sent to the second 5GHz communication system so that the second 5GHz communication system selects a third channel for radar signal monitoring according to the first switching notification. The third channel is different from the first channel and the second channel.

[0006] Optionally, the first channel is configured with radar avoidance duration and radar silence duration; the method further includes: If the duration during which the first channel is prohibited from use reaches the radar avoidance duration, a detection notification is sent to the second 5GHz communication system, so that the second 5GHz communication system selects the first channel for radar signal monitoring according to the detection notification, and monitors whether a radar signal appears on the first channel during the radar silence duration. Receive the detection results sent by the second 5GHz communication system; If the detection result indicates that no radar signal appears within the radar silence period, the service communication is switched from the second channel to the first channel, and a second switching notification is sent to the second 5GHz communication system so that the second 5GHz communication system selects a fourth channel for radar signal monitoring according to the second switching notification; the fourth channel is different from the first channel.

[0007] Optionally, the first 5GHz communication system and the second 5GHz communication system share the same storage system; the storage system stores channel monitoring records written by the second 5GHz communication system during the current monitoring of the second channel; obtaining the second channel information of the second channel used for radar signal monitoring in the second 5GHz communication system includes: obtaining the second channel information of the second channel based on the channel monitoring records in the storage system.

[0008] Optionally, obtaining the second channel information of the second channel used for radar signal monitoring in the second 5GHz communication system includes: The channel monitoring record is obtained from the storage system, which stores the second channel information of the second channel; wherein the storage system is used jointly by the first 5GHz communication system and the second 5GHz communication system; the channel monitoring record is written by the second 5GHz communication system during the current monitoring of the second channel.

[0009] Optionally, the second channel information includes timestamp information and the radar silence duration corresponding to the second channel; the timestamp information is used to indicate the duration of radar signal monitoring that has been performed on the second channel. After switching the service communication from the first channel to the second channel, the method further includes: Before using the second channel for service communication, if the timestamp information indicates that the duration of radar signal monitoring currently performed on the second channel is less than the radar silence duration corresponding to the second channel, then radar signal monitoring will continue to be performed on the second channel until the duration reaches the radar silence duration corresponding to the second channel. If no radar signal is detected within the radar silence period corresponding to the second channel, the second channel will be used to continue service communication.

[0010] Optionally, if a radar signal is detected on a first channel used for service communication, the method further includes: The radar information corresponding to the first channel is recorded in the storage system; wherein, the radar information includes at least: the channel number corresponding to the first channel and the radar event information corresponding to the first channel; when the first channel is an aggregated channel formed by channel binding, the channel number corresponding to the first channel includes the channel number of each channel that makes up the aggregated channel; the radar event information includes at least the timestamp information of the radar signal detected on the first channel and the radar avoidance duration configured for the first channel.

[0011] According to a second aspect of the embodiments of this application, another service communication method applied to an FTTR network is provided. The method is applied to a second 5GHz communication system used for radar signal monitoring in the network, wherein the network further includes a first 5GHz communication system used for service communication; the method includes: When the first 5GHz communication system performs service communication based on the first channel, the second channel is selected for radar signal monitoring; If a first handover notification is received from the first 5GHz communication system, a third channel is selected for radar signal monitoring according to the first handover notification. The third channel is different from the first channel and the second channel.

[0012] Optionally, the first channel is configured with a radar silence duration; the method further includes: If a detection notification is received from the first 5GHz communication system, the first channel is selected for radar signal monitoring according to the detection notification, and radar signals are monitored on the first channel during the radar silence period. Send the detection result to the first 5GHz communication system; the detection result is used to indicate whether a radar signal appears during the radar silence period; If a second handover notification is received from the first 5GHz communication system, a fourth channel is selected for radar signal monitoring according to the second handover notification; the fourth channel is different from the first channel.

[0013] Optionally, a second channel is selected for radar signal monitoring, including: During the radar silence period configured for the second channel, detect whether a radar signal appears on the second channel; If a radar signal is detected on the second channel, a new channel for radar signal monitoring is selected as the new second channel, and the process returns to the step of detecting whether a radar signal is detected on the second channel.

[0014] Optionally, the method further includes: During the radar signal monitoring process on the second channel, the channel monitoring record corresponding to the second channel is written to the storage system; The storage system is shared by the first 5GHz communication system and the second 5GHz communication system; the channel monitoring record stores the second channel information of the second channel.

[0015] Optionally, a designated channel is selected for radar signal monitoring, wherein the designated channel is the third or fourth channel, including: Determine the current monitoring bandwidth based on the working bandwidth configured in the service communication settings; Within the operating frequency band supported by the first 5GHz communication system, among all channels that meet the current monitoring bandwidth, for channels other than those occupied by service communication, it is detected whether there is at least one candidate channel; the candidate channel refers to a channel that is not in radar silence state and is not marked as radar avoidance state; If one exists, select one of the candidate channels as the specified channel; If it does not exist, and the current monitoring bandwidth is not the minimum channel bandwidth, the current monitoring bandwidth is reduced to the next level bandwidth as the new current monitoring bandwidth, and the process returns to the step of detecting whether at least one candidate channel exists.

[0016] According to a third aspect of the embodiments of this application, a service communication apparatus for use in an FTTR network is provided. The apparatus is applied to a first 5GHz communication system for service communication in the network, and the network further includes a second 5GHz communication system for radar signal monitoring. The apparatus includes: The channel information acquisition module is configured to acquire the second channel information of the second channel used for radar signal monitoring in the second 5GHz communication system if a radar signal is detected on the first channel used for service communication. The channel switching module is configured to switch the service communication from the first channel to the second channel based on the second channel information, and send a first switching notification to the second 5GHz communication system, so that the second 5GHz communication system selects a third channel for radar signal monitoring according to the first switching notification, wherein the third channel is different from the first channel and the second channel.

[0017] Optionally, the first channel is configured with a radar avoidance duration and a radar silence duration; when a radar signal is detected on the first channel, the first 5GHz communication system stops using the first channel and is prohibited from using the first channel again during the radar avoidance duration; the device further includes: The channel detection module is configured to send a detection notification to the second 5GHz communication system if the duration during which the first channel is prohibited from use reaches the radar avoidance duration, so that the second 5GHz communication system selects the first channel for radar signal monitoring according to the detection notification, and monitors whether a radar signal appears on the first channel during the radar silence duration. The receiving module is configured to receive the detection results sent by the second 5GHz communication system; The channel switching module is configured to switch the service communication from the second channel to the first channel if the detection result indicates that no radar signal has appeared within the radar silence period, and send a second switching notification to the second 5GHz communication system so that the second 5GHz communication system selects a fourth channel for radar signal monitoring according to the second switching notification; the fourth channel is different from the first channel.

[0018] Optionally, when the channel information acquisition module is configured to acquire the second channel information of the second channel used for radar signal monitoring in the second 5GHz communication system, it includes: The channel monitoring record is obtained from the storage system, which stores the second channel information of the second channel; wherein the storage system is used jointly by the first 5GHz communication system and the second 5GHz communication system; the channel monitoring record is written by the second 5GHz communication system during the current monitoring of the second channel.

[0019] Optionally, the second channel information includes timestamp information and the radar silence duration corresponding to the second channel; the timestamp information is used to indicate the duration of radar signal monitoring currently performed on the second channel; after switching the service communication from the first channel to the second channel, the device further includes: The continuous monitoring module is configured to, before using the second channel for service communication, if the timestamp information indicates that the duration of radar signal monitoring currently performed on the second channel is less than the radar silence duration corresponding to the second channel, then continue to perform radar signal monitoring on the second channel until the duration reaches the radar silence duration corresponding to the second channel. The service communication module is configured to continue service communication using the second channel if no radar signal is detected within the radar silence period corresponding to the second channel.

[0020] Optionally, if a radar signal is detected on the first channel used for service communication, the apparatus further includes a radar information recording module configured to: The radar information corresponding to the first channel is recorded in the storage system; The radar information includes at least: the channel number corresponding to the first channel and the radar event information corresponding to the first channel; when the first channel is an aggregated channel formed by channel binding, the channel number corresponding to the first channel includes the channel number of each channel that makes up the aggregated channel; the radar event information includes at least the timestamp information of the radar signal detected on the first channel and the radar avoidance duration configured for the first channel.

[0021] According to a fourth aspect of the embodiments of this application, another service communication apparatus for use in an FTTR network is provided. The apparatus is applied to a second 5GHz communication system used for radar signal monitoring in the network, wherein the network further includes a first 5GHz communication system used for service communication; the apparatus includes: The first monitoring module is configured to select a second channel for radar signal monitoring when the first 5GHz communication system performs service communication based on the first channel; The second monitoring module is configured to select a third channel for radar signal monitoring based on the first switching notification sent by the first 5GHz communication system if it receives the first switching notification. The third channel is different from the first channel and the second channel.

[0022] Optionally, the first channel is configured with a radar silence duration; the device further includes: The third monitoring module is configured to select a first channel for radar signal monitoring according to the detection notification if it receives a detection notification sent by the first 5GHz communication system, and monitor whether a radar signal appears on the first channel during the radar silence period. The result return module is configured to send the detection result to the first 5GHz communication system; the detection result is used to indicate whether a radar signal has appeared during the radar silence period. The fourth monitoring module is configured to select a fourth channel for radar signal monitoring based on the second switching notification received from the first 5GHz communication system; the fourth channel is different from the first channel.

[0023] Optionally, when the first monitoring module is configured to select the second channel for radar signal monitoring, it includes: During the radar silence period configured for the second channel, detect whether a radar signal appears on the second channel; if a radar signal is detected on the second channel, select a new channel for radar signal monitoring as the new second channel, and return to the step of detecting whether a radar signal appears on the second channel.

[0024] Optionally, the device further includes a monitoring record storage module, configured to: During the radar signal monitoring process on the second channel, the channel monitoring record corresponding to the second channel is written to the storage system; wherein, the storage system is used jointly by the first 5GHz communication system and the second 5GHz communication system; the channel monitoring record stores the second channel information of the second channel.

[0025] Optionally, the first monitoring module, the second monitoring module, or the fourth monitoring module is configured to select a designated channel for radar signal monitoring, wherein the designated channel is the second channel, the third channel, or the fourth channel, including: The monitoring bandwidth determination module is configured to determine the current monitoring bandwidth based on the working bandwidth of the service communication configuration; The candidate channel detection module is configured to detect whether at least one candidate channel exists among all channels that meet the current monitoring bandwidth within the operating frequency band supported by the first 5GHz communication system, excluding channels occupied by service communication; the candidate channel refers to a channel that is not in radar silence state and is not marked as radar avoidance state. The selection module is configured to select one of the candidate channels as the specified channel if it exists. The monitoring bandwidth update module is configured to, if it does not exist, reduce the current monitoring bandwidth to the next level bandwidth as the new current monitoring bandwidth, and return to the step of detecting whether at least one candidate channel exists, if the current monitoring bandwidth is not the minimum channel bandwidth.

[0026] According to a fifth aspect of the embodiments of this application, an electronic device is provided, the electronic device comprising: a memory and a processor; the memory being used to store a computer program; the processor being used to execute the above-described service communication method applied to FTTR networking by invoking the computer program.

[0027] According to a sixth aspect of the embodiments of this application, a computer-readable storage medium is provided, on which a computer program is stored, which, when executed by a processor, implements the above-described service communication method applied to FTTR networking.

[0028] The technical solutions provided in this application embodiment may include the following beneficial effects: In the technical solution provided in this application, the radar signal monitoring function and the service communication function are decoupled within the network. A separate 5GHz communication system, other than the 5GHz communication system used for service communication, is dedicated to radar signal monitoring. During service communication, this separate 5GHz communication system continuously performs silence and listening on the selected channel currently used for radar signal monitoring, and proactively probes the DFS channel as a backup channel for current service communication. When the 5GHz communication system used for service communication detects a radar signal on the channel used for service communication, it actively acquires information about the channel currently being monitored by the separate 5GHz communication system and directly switches to that channel to continue service communication. Since the separate 5GHz communication system has already performed radar silence, the 5GHz communication system used for service communication can quickly enter service communication on the switched channel, thereby reducing the long-term service interruption caused by entering radar silence after channel switching in related technologies, significantly improving the continuity of service communication and the user communication experience.

[0029] In addition, this method can maintain service continuity under radar channel avoidance and channel switching in different network environments, improving the reliability and experience of service communication. For all-optical indoor networks deployed with FTTR, this application can maintain the service communication continuity of access terminals in each room while ensuring the compliant use of radar channels, reducing service terminal issues and further improving the user experience of FTTR networks.

[0030] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this application. Furthermore, no embodiment in this application needs to achieve all the effects described above. Attached Figure Description

[0031] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0032] Figure 1A This is a schematic diagram illustrating a networking architecture where a second 5GHz communication system and a first 5GHz communication system are deployed on the same network device, according to an exemplary embodiment of this application. Figure 1B This is a schematic flowchart illustrating a service communication method applied to FTTR networking, as shown in an exemplary embodiment of this application. Figure 1C This is a schematic diagram illustrating a channel switching and silent inheritance process according to an exemplary embodiment of this application; Figure 1D This is a flowchart illustrating the steps of implementing channel back-switching under a radar back-switching mechanism, as shown in an exemplary embodiment of this application. Figure 2A This is a flowchart illustrating another method for service communication applied to FTTR networking, as shown in an exemplary embodiment of this application. Figure 2B This is a flowchart illustrating the steps of selecting a channel currently used for radar signal monitoring, as shown in an exemplary embodiment of this application. Figure 2C This is a schematic diagram illustrating an exemplary embodiment of this application of selecting the current channel for radar signal monitoring based on different channel bandwidths; Figure 3A This is a schematic diagram illustrating the structure of a service communication device applied to an FTTR network, as shown in an exemplary embodiment of this application. Figure 3B This is a schematic diagram of the structure of another service communication device applied to FTTR networking, as shown in an exemplary embodiment of this application; Figure 4 This is a hardware schematic diagram of an electronic device illustrated in an exemplary embodiment of this application. Detailed Implementation

[0033] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims. It should be understood that although the terms first, second, third, etc., may be used in this application to describe various information, such information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another.

[0034] Before describing the service communication method for FTTR networking provided in this application, a brief explanation of some of the terms used in this application is provided: FE (Front-End Module): Located at the very front end of the RF transceiver link, it typically integrates power amplifiers, low-noise amplifiers, switches, and filters for signal transmission amplification and reception enhancement.

[0035] RF (Radio Frequency Module): This module is responsible for upconverting baseband signals to RF signals (transmitting) or downconverting RF signals to baseband signals (receiving). It typically includes a mixer, local oscillator, filter, modulation and demodulation circuits, etc.

[0036] MAC (Medium Access Control): This layer is below the data link layer and is responsible for channel access control, frame encapsulation / decapsulation, collision avoidance (such as CSMA / CA), QoS scheduling, etc.

[0037] BBP (Baseband Processing Unit): Responsible for digital signal processing at the physical layer, including encoding / decoding, modulation / demodulation, FFT / IFFT (in OFDM systems), channel estimation, synchronization, etc. In many chip architectures, MAC and BBP are integrated into the same chip or module, and are therefore often referred to as the MAC / BBP module, representing the processing unit from the MAC layer to the baseband physical layer.

[0038] Radar silence: When a wireless device first uses a DFS channel, or switches from a non-operational state to that DFS channel, it must first undergo a mandatory listening period. During this period, no traffic data can be transmitted; the purpose is solely to detect the presence of radar signals on the DFS channel to ensure that it will not interfere with existing radar systems (such as weather radar) before enabling the channel. In the IEEE 802.11h / DFS specification, this silence period is called a channel availability check. The duration of radar silence typically depends on the radar silence regulations for the region and frequency band.

[0039] Radar avoidance refers to the behavior of a wireless device that, upon detecting a radar signal on an already used channel, immediately ceases all communication on that channel and actively switches to another safe channel to avoid continuous interference with the radar system, in accordance with regulatory requirements. The avoided channel is typically prohibited from being used by wireless devices again for a period of time (e.g., 30 minutes); this is the radar avoidance duration.

[0040] Therefore, some spectrum resources in the 5GHz wireless communication band (such as channels 52, 56, 60, 64, and 100-144 as defined by the IEEE 802.11 standard) were originally reserved for critical systems such as aviation and meteorological monitoring. To alleviate the shortage of spectrum resources for civilian Wi-Fi, international radio management regulations allow network devices to share these frequency bands under strict conditions. The core requirement for sharing these frequency bands is that network devices must support the DFS (Discretionary Detection and Avoidance) mechanism, possessing the ability to detect radar signals in real time and actively avoid them to ensure no interference with radar systems.

[0041] Specifically, when a network device is currently conducting service communication and suddenly detects a radar signal on the channel used for that communication, it must immediately stop all transmissions on that channel and be prohibited from using the channel for the subsequent radar avoidance period. If the network device is forced to switch to a non-DFS channel at this time, it will cause a decrease in throughput and affect service continuity. If it switches to another DFS channel, before the network device can use that DFS channel for service communication, it needs to first perform radar silence on that DFS channel to detect whether there is a radar signal on the DFS channel within the corresponding radar silence period. During the radar silence period, the network device is prohibited from sending any service packets and can only passively listen for radar signals. Service communication can only be carried out on the DFS channel if no radar signal is detected within the radar silence period. Since the radar silence period can range from 1 minute to 10 minutes or even 30 minutes, and the network device cannot conduct service communication during the radar silence period, this results in a prolonged interruption of service communication, affecting the user's communication experience.

[0042] In the FTTR (Fiber to the Room) all-optical networking architecture, since FTTR networks are usually composed of a master gateway and multiple distributed slave gateways (such as optical APs), they cover a wide area and have a high user density. They may carry services that are highly sensitive to latency and continuity, such as video and cloud gaming. When a slave gateway is triggered by DFS to switch channels and enter radar silence, it not only affects the continuity of services in local areas, but may also cause a decline in the service quality of the entire network, affecting the user's communication experience.

[0043] For example, a router supports the DFS mechanism and is currently operating on channel 100 (a normal DFS channel). When the router restarts, it automatically selects channel 100 and enters radar silence: it cannot send service packets for 1 minute; if no radar is detected after 1 minute, it will use channel 100 for normal service communication.

[0044] When a radar pulse is suddenly received during service communication using channel 100 (e.g., a nearby airport activates its weather radar), all transmissions on channel 100 immediately cease, and the DFS avoidance mechanism is triggered. If switching to another DFS channel, 116, radar silence is entered again: no service messages can be sent for one minute. Only after one minute, when no radar is detected, can normal service communication be performed using channel 116. The prolonged service interruption from the detection of the radar signal to the resumption of service communication can lead to degraded user experience issues such as video stuttering, voice interruption, and game disconnections.

[0045] In view of this, this application provides a service communication method for FTTR networking. During normal service communication by a first 5GHz communication system, a second 5GHz communication system is designated for dedicated radar signal monitoring. This second 5GHz communication system maintains radar monitoring throughout the entire service communication process of the first 5GHz communication system. When a radar signal is detected on the first channel currently used for service communication by the first 5GHz communication system, the second 5GHz communication system can, based on information obtained from its continuous radar signal monitoring, provide the first 5GHz communication system with a backup channel that has already undergone radar silence and confirmed to be free of radar signals. This allows for rapid switching, effectively reducing service interruptions caused by radar silence after the first 5GHz communication system switches to a new channel, thus improving communication continuity and user experience.

[0046] Understandably, this method is applicable to FTTR (Fiber to the Room) networking, but not limited to this scenario. It is also applicable to other wireless access scenarios, including enterprise-grade Wi-Fi, industrial IoT, wireless extension modules for traditional copper access devices, and various IP network environments and topologies supporting the DFS band, demonstrating broad applicability and scalability.

[0047] The second 5GHz communication system and the first 5GHz communication system can be deployed in any of the following ways: The second 5GHz communication system and the first 5GHz communication system belong to the same logical network. This same logical network refers to multiple network devices being centrally managed and coordinated by the same management entity (such as a main gateway, controller, or cloud platform), sharing a consistent network identifier, and appearing as a single, continuous communication network to users or upper-layer applications. That is, the first 5GHz communication system and the second 5GHz communication system can be deployed on two different network devices, and these two different network devices belong to the same logical network. For example, in an FTTR (Fiber to the Room) networking scenario, the network architecture includes a main gateway and slave gateways deployed in multiple rooms. Although these devices are physically distributed in different locations, they are all uniformly managed by the main gateway, and their wireless signals form a unified network supporting seamless roaming (using the same SSID), constituting the same logical network. In this architecture, a 5GHz radio frequency unit on a slave gateway can be designated as a second 5GHz communication system dedicated to radar signal monitoring when no terminals are connected and no service traffic is carried; while the 5GHz radio frequency units on the main gateway or other slave gateways act as the first 5GHz communication system, carrying out normal user service communication.

[0048] Alternatively, the first 5GHz communication system and the second 5GHz communication system can be integrated into the same network device. For example, see [link to relevant documentation]. Figure 1A The diagram illustrates an exemplary network architecture where a second 5GHz communication system and a first 5GHz communication system are deployed on the same network device. The network device includes a communication component 10, as shown in the figure. This communication component includes a 2.4GHz communication system (for communication in the 2.4GHz band) and two 5GHz communication systems (for communication in the 5GHz band). The FE module 11a, RF module 12a, and MAC / BBP module 13a together form a 2.4GHz communication system. The FE module 11b, RF module 12b, and MAC / BBP module 13b together form a 5GHz communication system; The RF module 12c and the MAC / BBP module 13c together form another 5GHz communication system.

[0049] As shown in the figure, FE modules 11a, 11b and RF module 12c are all connected to the common antenna 19. In actual scenarios, dedicated antennas can be set for FE modules 11a, FE modules 11b and RF module 12c respectively, or a dedicated antenna can be set only for RF module 12c. This application does not limit this.

[0050] MAC / BBP modules 13a, 13b, and 13c are single-chip components integrating a media access controller and a baseband processor. The MAC section, located below the data link layer, is responsible for sending and receiving frames in a predetermined format, as well as error detection. The BB section handles modulation / demodulation, encoding / decoding, and other processing of communication signals. Therefore, the MAC / BBP modules process communication signals, such as adding header information like MAC addresses and packaging them, thus preparing the data for communication.

[0051] RF modules 12a, 12b, and 12c are responsible for up-conversion / down-conversion and noise cancellation of communication signals. FE modules 11a and 11b, located between antenna 19 and RF modules 12a and 12b, are front-end modules responsible for adjusting receiver sensitivity, transmit power, and half-duplex signal switching. It is important to note that these modules are responsible for communication processing in their respective frequency bands. The 5GHz communication system not only handles normal service communication but also detects the presence of radar signals in the channel used for current service communication.

[0052] Based on the above, this embodiment uses one of the two 5GHz communication systems of the same network device for service communication and the other for radar signal monitoring. For example, FE module 11b, RF module 12b, and MAC / BBP module 13b form a first 5GHz communication system dedicated to service communication; RF module 12c and MAC / BBP module 13c form a second 5GHz communication system dedicated to radar signal monitoring. In the illustrated scenario, this 5GHz communication system will be used for radar signal monitoring, and no half-duplex signal switching is required, so it may not include the FE module. In actual working scenarios, the second 5GHz communication system may also adopt the same structure as the first 5GHz communication system, i.e., include the FE module.

[0053] Based on this, see Figure 1B The illustrated flowchart illustrates a service communication method applied to an FTTR network. This method is applied to a first 5GHz communication system used for service communication in the aforementioned network and may include at least the following steps: S101, if a radar signal is detected on the first channel used for business communication, then the second channel information of the second channel used for radar signal monitoring in the second 5GHz communication system is obtained; The first channel is the communication channel currently used by the first 5GHz communication system to carry service messages. This first channel can be an aggregated channel formed through channel bonding (e.g., 40MHz, 80MHz, or 160MHz bandwidth), or it can be a single 20MHz base channel. For example, in an 802.11ac / ax Wi-Fi system, if the first 5GHz communication system operates in 80MHz mode, the first channel can be formed by aggregating four consecutive 20MHz sub-channels (e.g., channels 52+56+60+64); while in a basic coverage scenario, the first channel can also be a single 20MHz channel (e.g., channel 36).

[0054] During service communication via the first channel, the first 5GHz communication system can continuously monitor the channel for signals matching radar characteristics based on its built-in DFS detection mechanism. Once a radar signal is detected, the first 5GHz communication system must immediately cease all service communication transmissions on that channel. This first channel is configured with a radar avoidance period, which is the mandatory lock-on duration (typically 30 minutes) after radar signal detection, prohibiting the re-use of the first channel. During this period, the first 5GHz communication system must not reactivate the first channel for communication to avoid interfering with the radar system. Therefore, the first 5GHz communication system needs to quickly switch to another channel to continue service communication.

[0055] In this embodiment, the second 5GHz communication system is dedicated to radar signal monitoring. Simultaneously with the first 5GHz communication system commencing service communication on the first channel, the second 5GHz communication system selects a channel from the operating frequency bands supported by the first 5GHz communication system (excluding the first channel currently occupied by service communication) that is not in radar silence or avoidance mode as the second channel. This second channel serves as a backup channel for the first channel, and radar signal monitoring is continuously performed on the second channel.

[0056] Since the second 5GHz communication system has pre-executed radar signals on the second channel to replace the first 5GHz system's pre-executed radar silence process, when a radar signal is detected on the first channel, the first 5GHz communication system can directly switch to the second channel and conduct service communication based on the second channel. This reduces service interruptions caused by the first 5GHz communication system performing radar silence for a long time, and improves user experience and network reliability.

[0057] Therefore, when a radar signal is detected on the first channel used for business communication, the first 5GHz communication system needs to obtain the second channel information of the second channel used for radar signal monitoring in the second 5GHz communication system in order to complete the channel switching operation.

[0058] To achieve efficient collaboration, the first 5GHz communication system and the second 5GHz communication system can share the same storage system. This storage system stores channel monitoring records written by the second 5GHz communication system during its current monitoring of the second channel. These channel monitoring records document the entire process and results of the second 5GHz communication system's radar monitoring of the second channel, and may include, but are not limited to, the following: Channel number of the second channel: If the second channel is a single 20MHz channel, record its channel number (e.g., channel 100); if it is an aggregated channel formed by channel bonding (e.g., 80MHz), record all the basic channel numbers that make up the aggregated channel (e.g., channels 100, 104, 108, 112). Channel bandwidth configuration: for example, 20MHz, 40MHz, 80MHz, etc.; Radar detection status: Indicates whether a radar signal has been detected on the second channel; Channel availability flag: Indicates whether the channel has completed the channel availability check, that is, whether it has passed the radar silence period and been confirmed as available; DFS compliance status: such as whether it is in the radar avoidance period, whether it has been marked as prohibited from use, etc. Radar silence timestamp: The time during which a second 5GHz communication system has been continuously listening on this channel, used to verify whether the required radar silence duration (e.g., 60 seconds) is met.

[0059] Accordingly, based on this storage system, when the first 5GHz system acquires the second channel information of the second channel used for radar signal monitoring in the second 5GHz communication system, it can obtain the second channel information of the second channel based on the channel monitoring records in the storage system. The second channel information includes at least key parameters such as the channel number, channel availability status, and whether radar silence has been completed, ensuring that the first 5GHz communication system can safely and compliantly complete channel switching.

[0060] When a radar signal is detected on a first channel used for business communication, the radar information corresponding to the first channel can also be recorded in the storage system; wherein, the radar information includes at least: the channel number corresponding to the first channel and the radar event information corresponding to the first channel; when the first channel is an aggregated channel formed by channel binding, the channel number corresponding to the first channel includes the channel number of each channel that makes up the aggregated channel; the radar event information includes at least the timestamp information of the radar signal detected on the first channel and the radar avoidance duration corresponding to the first channel.

[0061] Based on the radar information recorded in the storage system, when the second 5GHz communication system needs to select the channel currently used for radar signal monitoring, it can query the radar information records in the storage system and filter out the following channels: channels whose channel number coincides with the channel number recorded in any radar event; channels whose current system time is less than the radar event timestamp and the corresponding radar avoidance duration; and channels that are aggregated channels and any of their constituent channels are in a radar avoidance state. Based on this, the second 5GHz communication system can actively avoid channels that have been marked as being in a radar avoidance period, so as to avoid repeatedly selecting channels known to have radar interference risks for monitoring or subsequent switching, thereby improving the reliability of channel selection and DFS compliance, and reducing invalid monitoring or secondary interruptions caused by incorrect selection of avoidance channels.

[0062] S102, based on the second channel information, the service communication is switched from the first channel to the second channel, and a first switching notification is sent to the second 5GHz communication system so that the second 5GHz communication system selects a third channel for radar signal monitoring according to the first switching notification, wherein the third channel is different from the first channel and the second channel.

[0063] Based on the second channel information, the current DFS availability status of the second channel is indicated, including key parameters such as whether radar silence has been completed, the duration of radar signal monitoring, and whether radar signals have been detected. Therefore, the first 5GHz communication system can switch the first channel currently used for service communication to the second channel indicated by the second channel information based on the second channel information.

[0064] In some cases, the second 5GHz communication system may be performing radar signal monitoring on the second channel, but if the duration of radar signal monitoring has not yet reached the radar silence duration corresponding to the second channel (e.g., only 30 seconds of monitoring, while the regulatory requirement for radar silence is 60 seconds), the first 5GHz communication system may detect the radar signal on the first channel and immediately perform a channel switch. Since the first and second 5GHz communication systems appear as the same logical network externally and possess state sharing and coordination capabilities, the first 5GHz communication system, after switching from the first channel to the second channel, can inherit the duration of radar signal monitoring already performed by the second 5GHz communication system on the second channel and continue to complete the remaining radar silence process on the existing basis, without having to start the radar silence process from scratch.

[0065] Based on this, the second channel information includes timestamp information and the radar silence duration corresponding to the second channel; the timestamp information is used to indicate the duration of radar signal monitoring currently being performed on the second channel. Accordingly, after the first 5GHz communication system switches the service communication from the first channel to the second channel based on the second channel information, see [link to relevant documentation]. Figure 1C An exemplary diagram illustrating a channel switching and silent inheritance process may include the following operations: S1021, Before using the second channel for service communication, detect whether the duration of radar signal monitoring currently performed on the second channel, as indicated by the timestamp information, is less than the radar silence duration corresponding to the second channel. S1022, If the timestamp information indicates that the duration of radar signal monitoring currently performed on the second channel is less than the radar silence duration corresponding to the second channel, then radar signal detection will continue to be performed on the second channel until the duration reaches the radar silence duration corresponding to the second channel. The timestamp information can record the start time when the second 5GHz communication system begins performing radar signal monitoring on the second channel. After switching to the second channel, the first 5GHz communication system can obtain the current system time and calculate the duration of radar signal monitoring currently being performed on the second channel based on the difference between the current system time and the start time.

[0066] If the duration of radar signal monitoring on the second channel is less than the radar silence duration corresponding to the second channel, it indicates that the second channel has not yet completed the complete radar silence process. Before using the second channel for service communication, the first 5GHz communication system needs to continue radar silence to ensure that the cumulative radar signal monitoring time reaches the radar silence duration corresponding to the second channel (i.e., the channel availability check (CAC) duration required by regulations). During this period, it is continuously verified that there is no radar signal on the channel, thereby meeting DFS compliance requirements and avoiding interference with existing radar systems.

[0067] For example, such as Figure 1C As shown, assuming the second 5GHz communication system begins radar monitoring on the second channel at time T0, and the current system time until the first 5GHz communication system completes channel switching is T1, then the duration is Δt = T1 - T0. If this duration Δt is 35 seconds, and the radar silence duration corresponding to the second channel is 60 seconds, it indicates that the second channel has not yet completed the complete radar silence process, but 35 seconds of effective monitoring can be inherited and utilized.

[0068] Therefore, after the handover, the first 5GHz communication system needs to continue performing radar signal detection on the second channel until the cumulative listening time reaches 60 seconds. Figure 1C As shown in the diagram, after switching, the system continued to monitor for 25 seconds. If no radar signal was detected during this complete silence period, the second channel could be determined to be an available channel and officially used for business communication.

[0069] S1023, if no radar signal is detected within the radar silence period corresponding to the second channel, then the second channel is used to continue service communication.

[0070] If no radar signal is detected within the entire radar silence period (e.g., 60 seconds) of the listening window, then the second channel is currently free of radar activity and has met the CAC conditions required by the DFS specification. At this time, the channel is determined to be a safe and available channel, and the first 5GHz communication system can officially activate the second channel to resume and continue user service communication.

[0071] This embodiment continuously monitors the radar signal of the second channel through a second 5GHz communication system under the same logical network, and records the monitoring status in real time in a shared storage system. This allows the first 5GHz communication system to directly inherit the existing radar signal monitoring duration of the second channel when it needs to switch channels due to radar events, without having to re-execute the complete radar silence from scratch. This achieves decoupling of radar silence from service communication and inheritance of radar silence duration during switching, effectively shortening the service interruption window while ensuring DFS compliance.

[0072] It is understood that any channel requiring radar silence operation in any embodiment of this application can be understood as a DFS channel. Performing radar silence operation means continuously monitoring whether a radar signal appears on the DFS channel during the radar silence duration corresponding to the DFS channel.

[0073] After the first 5GHz communication system switches its current channel for business communication to the second channel, in order to maintain continuous radar monitoring capabilities and reserve a backup channel for possible subsequent channel switching, the first 5GHz communication system will send a switching notification to the second 5GHz communication system. The second 5GHz communication system will then stop monitoring the original second channel and select a new channel currently used for radar signal monitoring as the backup channel for the second channel. The system will continue to perform radar signal detection on the newly selected channel to complete the radar silence process of the new backup channel in advance.

[0074] If the first 5GHz communication system detects the radar signal again on the second channel, it can immediately trigger a new round of channel switching procedures and switch the second channel currently used for service communication to the newly selected channel currently used for radar signal monitoring in order to continue service communication.

[0075] In this embodiment, a separate 5GHz communication system, other than the 5GHz communication system used for service communication within the network, is dedicated to radar signal monitoring. During service communication, this separate 5GHz communication system continuously performs radar silence operation on the selected channel currently used for radar signal monitoring, and pre-detects the DFS channel as a backup channel for current service communication. When the 5GHz communication system used for service communication detects a radar signal on the channel used for service communication, it directly switches to the channel currently being monitored by the separate 5GHz communication system. Based on the fact that the separate 5GHz communication system has pre-performed radar silence, the 5GHz communication system used for service communication can quickly enter service communication on the switched channel, thereby achieving decoupling between service communication and radar signal monitoring. Without increasing hardware and costs, this reduces the long-term service interruption caused by entering radar silence after channel switching in related technologies. Under the premise of achieving radar avoidance, it achieves fast and reliable switching of the DFS channel, which greatly improves the continuity of service communication and the user communication experience.

[0076] Furthermore, this method can maintain service continuity during radar channel avoidance and channel switching in various network environments, significantly improving communication reliability and user experience. Especially in all-optical indoor networks deployed with FTTR, this application can maintain stable connections for terminal devices in each room while strictly adhering to DFS radar channel compliance requirements, avoiding service interruptions caused by channel switching or radar avoidance, thereby further optimizing the overall user experience of the FTTR network.

[0077] In some embodiments, based on the related technologies, some network devices support a radar back-switching mechanism. That is, after the network device detects that the radar signal has switched to another channel on the DFS channel used for the current service communication, if the radar avoidance time (e.g., 30 minutes) specified by DFS for the DFS channel used for the current service communication ends, and if the DFS channel is detected to be idle, it can switch back to the DFS channel used for the original service communication from the other channel. However, after switching back to the DFS channel used for the original service communication, the network device still needs to perform radar silence before using the DFS channel for service communication, which will cause service communication interruption.

[0078] Based on this, in the case described in the above embodiment where the first 5GHz communication system uses the first channel for service communication and switches to the second channel upon detecting a radar signal, when a radar signal is detected on the first channel, the first 5GHz communication system stops using the first channel and is prohibited from using the first channel again during the radar avoidance period. If the first 5GHz communication system supports a radar back-switching mechanism, this embodiment also provides an implementation method that ensures uninterrupted service communication in the case of radar back-switching, see [link to implementation]. Figure 1D The flowchart illustrating the steps of implementing channel back-switching under an exemplary radar back-switching mechanism may further include the following steps after selecting the third channel for radar signal monitoring: S103, if the duration of the first channel being prohibited from use reaches the radar avoidance duration, a detection notification is sent to the second 5GHz communication system so that the second 5GHz communication system selects the first channel for radar signal monitoring according to the detection notification and monitors whether a radar signal appears on the first channel during the radar silence duration. The radar avoidance duration of the first channel represents the lock-on period (typically 30 minutes) during which the first 5GHz communication system is forcibly prohibited from using the first channel again after detecting a radar signal on it. The end of the radar avoidance duration of the first channel indicates that the lock-on period has expired, and the first channel is now eligible for evaluation and use again in the time dimension.

[0079] At this time, the first 5GHz communication system is operating on the second channel for service communication. The first channel is configured with a radar silence period. When the first channel is reactivated after the radar avoidance period ends, radar signal monitoring must be performed on the first channel for a duration that meets the radar silence period to confirm that there is currently no radar activity. Therefore, to avoid a new round of service interruption caused by the first 5GHz communication system switching back to the first channel directly after the radar avoidance period ends and then needing to perform radar silence, this embodiment continues to maintain normal service communication of the first 5GHz communication system on the second channel after the radar avoidance period ends, while simultaneously sending the detection notification to the second 5GHz communication system.

[0080] This detection notification instructs the second 5GHz communication system to perform radar signal monitoring on the first channel, assuming the avoidance time for the first channel has ended, thus pre-implementing a radar silence process. Based on the detection notification, the second 5GHz communication system stops monitoring the radar signal of the third channel, which was originally selected for radar signal monitoring, and selects the first channel for radar signal monitoring. It monitors whether a radar signal appears on the first channel within its corresponding radar silence duration, replacing the first 5GHz communication system's pre-implementation of radar silence without requiring the first 5GHz communication system to interrupt its current service to perform this process. This allows the first channel to complete radar silence without affecting the continuity of current service communication.

[0081] S104, receive the detection result sent by the second 5GHz communication system. If the detection result indicates that no radar signal appears within the radar silence period, switch the service communication from the second channel to the first channel and send a second switching notification to the second 5GHz communication system so that the second 5GHz communication system selects a fourth channel for radar signal monitoring according to the second switching notification; the fourth channel is different from the first channel.

[0082] The detection result returned by the second 5GHz communication system is used to indicate whether the first channel has a radar signal during the radar silence period. When the detection result indicates that the first channel has no radar signal during the radar silence period, it means that the first channel can be used for service communication. Conversely, when the detection result indicates that the first channel has a radar signal during the radar silence period, it means that the first channel cannot be used for service communication.

[0083] If the detection result indicates that no radar signal appears within the radar silence period, it means that the second 5GHz has replaced the first 5GHz communication system and completed the radar silence process before activation on the first channel. After the first 5GHz communication switches back from the second channel to the first channel, it can directly use the first channel to continue service communication without radar silence. This effectively solves the problem of service communication interruption caused by entering radar silence after radar switchback in related technologies, and maintains the continuity and stability of service communication.

[0084] In addition, after switching back from the second channel to the first channel, the second 5GHz communication system stops monitoring the first channel by sending a second handover notification, and selects a fourth channel for radar signal monitoring as the backup channel for the first channel. The radar signal detection is then performed on the fourth channel to complete the radar silence process of the backup channel in advance, thereby maintaining continuous DFS sensing capability and preparing for possible subsequent channel switching.

[0085] If the detection result indicates that a radar signal appears on the first channel during its corresponding radar silence period, the first channel is marked as unavailable again. This means that from the moment the radar signal is detected, the first 5GHz communication system and the second 5GHz communication system are prohibited from using the first channel again during their corresponding radar silence period. To ensure service continuity and avoid violations or service interruptions caused by forcibly switching back to the first channel where radar activity exists, service communication can continue based on the second channel. A third switching notification is sent to the second 5GHz communication system so that the second 5GHz communication system selects a fifth channel for radar signal monitoring according to the third switching notification. This fifth channel is different from the channel currently used for service communication and the first channel where the radar signal appears.

[0086] In this embodiment, radar signal monitoring and service communication functions are decoupled. After the first channel is avoided due to the detection of radar signals, the first 5GHz communication system switches to the second channel to continue service communication. After the radar avoidance time of the first channel ends, the first 5GHz communication system does not directly attempt to switch back. Instead, a dedicated second 5GHz communication system performs radar signal monitoring and radar silence verification on the first channel in advance in the background. When the first channel is available, the first 5GHz communication system can immediately switch back to the first channel and enable the first channel to continue service communication without additional radar silence. This effectively avoids service interruption caused by the first 5GHz communication system directly switching back to the DFS channel, ensuring the continuity of user communication and service quality.

[0087] To better understand the service communication method for FTTR networking provided in this application, the following description will focus on the second 5GHz communication system used for radar signal monitoring in the aforementioned network. The network also includes a first 5GHz communication system for service communication. See [link to documentation]. Figure 2A An exemplary flowchart of another business communication method is shown, which may include at least the following steps: S201, when the first 5GHz communication system performs service communication based on the first channel, the second channel is selected for radar signal monitoring. The first 5GHz communication system is used for business communication, while the second 5GHz communication system (which may be located on the same device or other devices in the same logical network) continuously monitors radar signals on an independent channel (i.e., the second channel). This allows for the early verification of the availability of the backup channel without affecting the current business communication, thus providing a channel basis for subsequent channel switching.

[0088] During the selection of the second channel for radar signal monitoring, the system checks whether a radar signal appears on the second channel within the radar silence period configured for the second channel. If a radar signal is detected on the second channel within the radar silence period corresponding to the second channel, a new channel for radar signal monitoring can be selected as the new second channel, and the system returns to the step of checking whether a radar signal appears on the second channel. This ensures that the second 5GHz communication system always monitors on a compliant channel without radar signals, avoiding misjudging channels with radar activity as available alternatives, thereby ensuring the security and legality of subsequent channel switching.

[0089] To achieve efficient collaboration and state sharing between the first and second 5GHz communication systems, the first and second 5GHz communication systems can share the same storage system. Based on this, during radar signal monitoring on the second channel, the second 5GHz communication system can write the channel monitoring record corresponding to the second channel to the storage system in real time. This allows the first 5GHz communication system to quickly retrieve the second channel information for radar signal monitoring from the channel monitoring record of the second channel in the second 5GHz communication system when it detects a radar signal on the first channel used for service communication, without waiting for negotiation, thereby improving channel switching efficiency.

[0090] S202, if a first handover notification is received from the first 5GHz communication system, a third channel is selected for radar signal monitoring according to the first handover notification, wherein the third channel is different from the first channel and the second channel.

[0091] Upon detecting a radar signal on a first channel used for service communication, the first 5GHz communication system immediately switches to the second channel in the second 5GHz communication system, which is currently used for radar signal monitoring, to continue service communication on the second channel. To ensure effective radar monitoring capabilities in the future and to prepare a new backup channel for the next possible channel switch, the first 5GHz communication system sends the first switchover notification to the second 5GHz communication system simultaneously with the switchover to the second channel.

[0092] Upon receiving the first handover notification, the second 5GHz communication system ceases monitoring the radar signal on the original second channel. Since the first channel has been marked as radar-avoiding due to radar signal detection, and the second channel is already occupied by the first 5GHz communication system for service communication, the second 5GHz communication system selects a new channel from among the channels supported by the first 5GHz communication system (excluding the first and second channels) as the third channel for radar signal monitoring. Subsequently, the second 5GHz communication system performs radar silence operation on this newly selected third channel, achieving dynamic decoupling between the monitoring channel and the service channel, ensuring efficient and low-interruption communication services during multiple channel handovers.

[0093] After the first 5GHz communication system switches from the first channel to the second channel, from the moment a radar signal is detected on the first channel, the first 5GHz communication system is prohibited from using the first channel again for the radar silence period corresponding to the first channel after that moment. If the first 5GHz communication system supports radar backswitching, it can attempt to switch service communication back to the first channel after the duration during which the first 5GHz communication system is prohibited from using the first channel reaches the radar avoidance period corresponding to the first channel. For this operation, the first 5GHz communication system can send a detection notification to the second 5GHz communication system after the duration during which the first 5GHz communication system is prohibited from using the first channel reaches the radar avoidance period corresponding to the first channel.

[0094] For the second 5GHz communication system, if a detection notification is received from the first 5GHz communication system, the first channel is selected for radar signal monitoring according to the detection notification, and the first channel is monitored for radar signal occurrence during the radar silence period; then, a detection result is sent to the first 5GHz communication system, which indicates whether radar signal occurs on the first channel during the radar silence period.

[0095] If the detection result indicates that no radar signal appears on the first channel during the radar silence period, the first 5GHz communication system switches its service communication back from the second channel to the first channel and sends a second handover notification to the second 5GHz communication system. Upon receiving the second handover notification from the first 5GHz communication system, the second 5GHz communication system selects a fourth channel for radar signal monitoring based on the second handover notification; the fourth channel is different from the first channel. If the detection result indicates that the first channel is unavailable, the first 5GHz communication system maintains its service communication on the second channel and sends a third handover notification to the second 5GHz communication system. If the second 5GHz communication system receives the third handover notification from the first 5GHz communication system, it selects a fifth channel for radar signal monitoring based on the second handover notification; the fifth channel is different from the channel currently used for service communication and different from the first channel where a radar signal is currently present.

[0096] In this embodiment, the second 5GHz communication system is dedicated to radar signal monitoring within the network. By continuously performing radar silence and listening on the channel currently used for radar signal monitoring, channel availability verification is pre-completed. When the first 5GHz communication system detects a radar signal on the channel used for service communication, a backup channel that has undergone pre-verification of radar silence is provided. This allows the first 5GHz communication system to quickly enter the service communication phase after channel switching, reducing prolonged service interruptions caused by radar silence during channel switching and improving the continuity of high-bandwidth services and user experience. Furthermore, the channel currently used for radar signal monitoring is dynamically updated after being occupied by service communication, ensuring the network always maintains the ability to pre-probe new DFS channels. This avoids monitoring blind spots due to channel occupancy and provides a channel foundation for subsequent channel switching.

[0097] In any of the above embodiments, the step of selecting a designated channel for radar signal monitoring, and wherein the designated channel is the second / third / fourth channel, can be implemented in the following manner, see [link to documentation]. Figure 2B An exemplary flowchart illustrating the steps for selecting a channel for radar signal monitoring may include the following steps: S210, determine the current monitoring bandwidth based on the working bandwidth configured in the service communication configuration; Operating bandwidth refers to the channel bandwidth currently configured by the access device for service communication, such as 20 MHz, 40 MHz, 80 MHz, or 160 MHz. This bandwidth is jointly determined by the Wi-Fi standard (such as 802.11ac / ax / be) and the device capabilities, and determines the actual spectrum resources occupied by the service communication. For example, if the access device's service communication operates in 80 MHz mode, then the service channel is formed by aggregating four consecutive 20 MHz sub-channels (such as channels 52+56+60+64).

[0098] The current monitoring bandwidth is used to query the channel (i.e., the designated channel) used for radar signal monitoring by the second 5GHz communication system. The operating bandwidth configured for service communication can be used as the current monitoring bandwidth to ensure that after switching to the channel used for radar signal monitoring, the service operates with the same performance as much as possible. For example, if the service communication uses an 80 MHz bandwidth, then the current monitoring bandwidth is set to 80 MHz.

[0099] The current monitoring bandwidth is not fixed, but is a parameter that is dynamically adjusted according to system capabilities, service requirements and spectrum availability. It is used to guide the selection range of candidate channels. Its value range is limited to the working bandwidth used by the current service communication to the minimum channel bandwidth, which means the bandwidth of a single channel, such as 20MHz.

[0100] S211, among the channels that meet the current monitoring bandwidth within the operating frequency band supported by the first 5GHz communication system, for channels other than those occupied by service communication, detect whether there is at least one candidate channel; the candidate channel refers to a channel that is not in radar silence state and is not marked as radar avoidance state. The first 5GHz communication system supports operating frequency bands that are allowed to be used by its hardware and protocol stack, including 5GHz DFS and non-DFS sub-bands, such as UNII-1 (5150-5250 MHz), UNII-2A (5250-5350 MHz), and UNII-2C (5470-5725 MHz). These frequency bands correspond to a series of standard Wi-Fi channels. For example, UNII-1 (5150-5250 MHz) corresponds to channels 36, 40, 44, and 48; UNII-2A (5250-5350 MHz) corresponds to channels 52, 56, 60, and 64; and UNII-2C (5470-5725 MHz) corresponds to channels 100 to 144.

[0101] In this embodiment, the second 5GHz communication system excludes channels currently used for service communication by the first 5GHz communication system from all channels corresponding to the operating frequency band supported by the first 5GHz communication system, and selects a designated channel for radar signal monitoring from the remaining channels. This designated channel can be an aggregated channel formed through channel bonding, or it can be a single 20MHz base channel.

[0102] For example, when the first 5GHz communication system is conducting service communication on the first channel, the second 5GHz communication system needs to select from all available channels except the first channel. If the first channel is an aggregated channel formed by channel bonding (e.g., an 80MHz bandwidth composed of four consecutive 20MHz basic channels, such as channels 52+56+60+64), then when selecting the monitoring channel, the second 5GHz communication system needs to exclude these four basic channels (52, 56, 60, 64), and also avoid selecting any aggregated channel that overlaps with or contains these four basic channels (e.g., a 40MHz combination 52+56).

[0103] For example, in the aforementioned embodiment, after the first 5GHz communication system has switched its service communication from the first channel to the second channel, its operating channel becomes the second channel. Correspondingly, the second 5GHz communication system reselects the monitoring target from channels other than the second channel. If the second channel is an aggregated channel (e.g., 80MHz, including channels 100+104+108+112), then the second 5GHz communication system, during the channel selection process, must also exclude channels 100, 104, 108, 112 and any binding combinations thereof from the candidate range.

[0104] Based on this, the second 5GHz communication system further screened candidate channels that met the following conditions: the channel bandwidth met the requirements of the current monitoring bandwidth; it was not in an ongoing radar silence process; and it was not marked as being in a radar avoidance period. Specifically, the fact that the channel was not in a radar silence state and was not marked as being in a radar avoidance state indicates that the channel was not currently undergoing CAC detection and was not currently within the range of channels disabled by the access device.

[0105] In modern Wi-Fi systems (such as IEEE 802.11ac / ax / be), the 5GHz band supports multiple channel bonding modes, including: 20 MHz: Basic channel bandwidth, suitable for high-density or heavily interfered environments; 40 MHz: Composed of two adjacent 20 MHz channels bonded together; 80 MHz: Composed of four consecutive 20 MHz channels bonded together; 160 MHz or 80+80 MHz: Consists of eight 20MHz channels, used for extreme speed scenarios.

[0106] Based on this, when selecting a designated channel for radar signal monitoring, if the first 5GHz communication system is currently conducting service communication on channels 100–112 with an 80MHz bandwidth, it is preferable to use the 80MHz bandwidth, which is the same as the current operating bandwidth of the first 5GHz communication system, as the current monitoring bandwidth to detect whether there is a candidate channel. This ensures that the selected monitoring channel is aligned with the channel used for current service communication in terms of bandwidth and spectrum structure. As a result, during subsequent channel switching, the service can be seamlessly switched to the 80MHz alternative channel monitored by the second 5GHz communication system without reducing bandwidth, avoiding throughput loss, and maintaining high service quality.

[0107] S212, if it exists, select one of the candidate channels as the specified channel; If there is only one candidate channel, that candidate channel will be directly used as the designated channel for radar signal monitoring; if there are multiple candidate channels, the optimal channel can be selected from them according to the preset channel selection strategy.

[0108] For example, since low-frequency DFS channels typically have lower propagation loss and better coverage, and their sensitivity to weather radar is relatively controllable in some areas, a minimum channel number priority strategy can be adopted, that is, the candidate channel with the smallest channel number is selected. Assuming that the current candidate channels include the aggregated channel composed of channels 100-112 and the aggregated channel composed of channels 132-144, the aggregated channel composed of channels 100-112 is selected.

[0109] Alternatively, other optimization strategies can be adopted, such as a historical availability priority strategy, which selects the channel with the fewest radar events and the fewest avoidance attempts over a past period, or a channel with the lowest current noise floor selected by combining noise / energy detection. In specific implementation, the channel selection strategy can be flexibly selected according to the application scenario and supported operating frequency band of the first 5GHz communication system, and this application does not limit it in this regard.

[0110] S213, if it does not exist, then if the current monitoring bandwidth is not the minimum channel bandwidth, reduce the current monitoring bandwidth to the next level bandwidth as the new current monitoring bandwidth, and return to the step of detecting whether at least one candidate channel exists.

[0111] If no candidate channel exists, it means that there is no compliant and available DFS channel for monitoring under the current monitoring bandwidth. In this case, if the current monitoring bandwidth is not the minimum channel bandwidth, the search space for candidate channels can be expanded by further reducing the current monitoring bandwidth, thereby increasing the probability of finding a channel that can be used for radar signal monitoring.

[0112] If the minimum channel bandwidth has not yet been reached, the current monitoring bandwidth is reduced to the next allowable channel bandwidth (e.g., from 80MHz to 40MHz, or from 40MHz to 20MHz), and the process returns to step S210 to re-detect whether there is a candidate channel that meets the requirements of the new current monitoring bandwidth. A channel bandwidth level sequence arranged from high to low can be predefined (e.g., 80 MHz → 40 MHz → 20 MHz). When the current monitoring bandwidth needs to be reduced, the channel bandwidth corresponding to the next channel bandwidth level adjacent to the current monitoring bandwidth is selected as the new current monitoring bandwidth. For example, if the current bandwidth is 80 MHz, the next level is 40 MHz; if the current bandwidth is 40 MHz, the next level is 20 MHz.

[0113] To better understand this current channel selection process used for radar signal monitoring, see [link to relevant documentation]. Figure 2C An exemplary schematic diagram of channel selection for radar signal monitoring is shown. The inputs to the selection process include a list of all available 20MHz basic channels (such as 52, 56, ..., 144, etc.) within the operating frequency band supported by the first 5GHz communication system, the channel used by the current service communication (e.g., an aggregated channel composed of channels 52, 56, 60, and 64), and radar status information for each channel (whether it is in radar silence or whether radar evasion has been triggered). The output includes the channel currently used for radar monitoring (which can be an aggregated channel or a single 20MHz channel).

[0114] According to a preset channel bandwidth priority sequence (from high to low), the current monitoring bandwidth is sequentially set to each level of the sequence. For each level of the current monitoring bandwidth, all legal channels that meet the requirements of the current monitoring bandwidth are enumerated from the remaining channels within the operating frequency band after excluding channels occupied by current service communication. It is checked whether at least one legal channel meets the availability condition. If so, one of the channels is selected as the designated channel for radar signal monitoring, and the process terminates. The availability condition means that the channel is not in a radar silent state and is not marked as a radar avoidance state.

[0115] For example Figure 2C As shown, assuming the current operating bandwidth of the first 5GHz communication system is 80MHz, then: S220: Use 80MHz as the current monitoring bandwidth and detect candidate channels based on 80MHz; Among the channels corresponding to the operating frequency band supported by the first 5GHz communication system, after excluding the channels used by the current service communication (such as the aggregated channel composed of channels 52, 56, 60, and 64), all legal 80MHz aggregated channels are enumerated according to the standard 80MHz binding rule (four consecutive 20MHz channels with a center frequency interval of 20MHz), such as [36,40,44,48], [100,104,108,112], [104,108,112,116], [116,120,124,128], etc. For each 80MHz aggregated channel, check whether all four of its 20MHz sub-channels are not silenced by radar and are not in radar avoidance mode. If so, the aggregated channel is used as a candidate channel. If at least one 80MHz aggregated channel meets the availability criteria, select one of them (e.g., prioritize the channel with the smallest channel number) as the designated channel for radar signal monitoring, and the process ends.

[0116] If no 80MHz aggregation channel meets the availability criteria, 40MHz will be used as the current monitoring bandwidth.

[0117] S221: Use 40MHz as the current monitoring bandwidth and detect candidate channels based on 40MHz; Similar to the steps described above, according to the standard 40MHz binding rule (two consecutive 20MHz channels), enumerate all legal 40MHz combinations, such as [116,120], [124,128], etc. For each 40MHz aggregated channel, check whether all two 20MHz sub-channels it contains are not silenced by radar and are not in radar avoidance mode. If so, the aggregated channel is used as a candidate channel. If there is at least one 40MHz aggregated channel that meets the availability conditions, select one of them (e.g., choose the one with the smallest channel number) as the designated channel for radar signal monitoring, and end the process.

[0118] If no 40MHz aggregation channel meets the availability criteria, 20MHz will be used as the current monitoring bandwidth.

[0119] S222: Fall back to 20MHz as the current monitoring bandwidth and detect candidate channels based on 20MHz; From the remaining channels (i.e., the channels occupied by non-service communication and the 20MHz channels that have not been silenced or evaded by radar), one channel is selected as the designated channel for radar signal monitoring, for example, the first available channel is selected in ascending order of channel number.

[0120] In this embodiment of the disclosure, when selecting a channel for radar signal monitoring, the second 5GHz communication system prioritizes searching for candidate channels with high bandwidth as the target and verifies high-bandwidth channels first to avoid rate reduction due to switching to low-bandwidth channels and ensure user experience. If there is no compliant available channel under the current bandwidth, the monitoring bandwidth is dynamically reduced to the next permissible level and candidate channels are searched again to expand the search space for candidate channels until a channel for radar signal monitoring is found or the bandwidth is reduced to the minimum. This ensures that effective radar monitoring capabilities can still be maintained in complex or restricted DFS spectrum environments, and improves the availability and robustness of the DFS band.

[0121] To enable those skilled in the art to better understand the service communication method for FTTR networking provided in this application, a specific scenario example will be used to illustrate the service communication method below.

[0122] Assume that network device M includes a 2.4GHz communication system Radio1, a 5GHz communication system Radio2, and Radio3. The 5GHz communication system Radio2 is currently conducting service communication on an aggregated channel C1 consisting of channels 52, 56, 60, and 64 with an operating bandwidth of 80 MHz. At this moment, the 5GHz communication system Radio2 detects a radar signal on the aggregated channel C1 and immediately stops all service transmissions on the aggregated channel C1.

[0123] (1) Detection of radar signal triggers channel switching procedure: According to the implementation of the relevant technology, when Radio2 switches from the aggregation channel C1 to another aggregation channel C2 (an aggregation channel composed of channels 100, 104, 108, and 112), Radio2 suspends service communication and performs radar silence verification on the other aggregation channel C2. That is, it continuously detects whether there is a radar signal on the other aggregation channel C2 during the radar silence duration T1 seconds corresponding to the other aggregation channel C2. During the radar silence period, Radio2 is prohibited from sending service messages, which will cause service communication to be interrupted for at least T seconds.

[0124] Based on the service communication method provided in this embodiment, the 5GHz communication system Radio3 is used for radar signal monitoring. During the service communication process of Radio2 on the aggregation channel C1, the 5GHz communication system Radio3 has selected the channel C2 currently used for radar signal monitoring (such as the aggregation channel composed of channels 100, 104, 108, and 112), and performs radar silence verification on the selected channel C2. That is, without affecting the service communication, Radio3 pre-selects the channel C2 used for radar signal monitoring as a backup channel for the service communication channel of Radio2, and performs radar signal monitoring in advance.

[0125] Therefore, when Radio2 detects a radar signal on the aggregation channel C1, it can obtain the channel information of the channel C2 currently used by Radio3 for radar signal monitoring, and switch from the aggregation channel C1 to the channel C2 currently used by Radio3 for radar signal monitoring. If Radio3 has already performed radar silence and has not detected a radar signal within the corresponding radar silence duration, Radio2 can directly use the channel C2 currently used for radar signal monitoring to continue service communication without performing radar silence verification, thereby maintaining the continuity of service communication.

[0126] Furthermore, assuming that the duration t1 seconds of radar signal detection performed by Radio3 on the current radar signal monitoring channel C2 is less than the radar silence duration T1 seconds corresponding to channel C2, since Radio3 and Radio2 are presented as the same logical network, they share channel state information and have the ability to work collaboratively. Radio2 can switch to the current radar signal monitoring channel C2 and continue performing the remaining (T1-t1) seconds of radar signal detection, based on the duration t1 seconds that Radio3 has already performed. Compared to related technologies that require a full T-second silence period for each switch, this significantly shortens the service communication interruption time caused by channel switching, effectively improving the continuity of service communication.

[0127] (2) Channel switching procedure for radar back-switching: According to the implementation of the relevant technology, when radar back-switching is required, Radio2 will directly switch back from the other aggregation channel C2 to the aggregation channel C1 that detects the radar signal. At this time, Radio2 will pause service communication again and re-perform radar silence verification on the aggregation channel C1. That is, it will continuously detect whether there is a radar signal on the aggregation channel C1 within the radar silence duration T2 seconds corresponding to the aggregation channel C1. During the radar silence period, Radio2 is prohibited from sending service messages, which will cause a secondary interruption of service communication for at least T2 seconds.

[0128] According to the service communication method provided in this embodiment, when Radio2 needs to switch back to the aggregation channel C1 where the radar signal is detected, Radio2 first continues to maintain service communication on channel C2. Radio3 uses channel C1 as the current channel for radar signal monitoring and continuously detects whether there is a radar signal on C1 during the radar silence duration corresponding to channel C1. If no radar signal is detected within the radar silence duration T2 seconds corresponding to channel C1, Radio2 switches back to channel C1 from the aggregation channel C2 currently used for service communication and directly enables channel C1 for service communication without waiting for radar silence, thus maintaining the continuity of service communication.

[0129] Corresponding to the aforementioned embodiments of the service communication method applied to FTTR networking, see [link to relevant documentation]. Figure 3A As shown, this application also provides an embodiment of a service communication device applied to an FTTR network. The device is applied to a first 5GHz communication system for service communication in the network, which also includes a second 5GHz communication system for radar signal monitoring. The device includes: The channel information acquisition module 301a is configured to acquire the second channel information of the second channel used for radar signal monitoring in the second 5GHz communication system if a radar signal is detected on the first channel used for service communication. The channel switching module 302a is configured to switch the service communication from the first channel to the second channel based on the second channel information, and send a first switching notification to the second 5GHz communication system so that the second 5GHz communication system selects a third channel for radar signal monitoring according to the first switching notification, wherein the third channel is different from the first channel and the second channel.

[0130] In some embodiments, the first channel is configured with a radar avoidance duration and a radar silence duration; the apparatus further includes: The channel detection module is configured to send a detection notification to the second 5GHz communication system if the duration during which the first channel is prohibited from use reaches the radar avoidance duration, so that the second 5GHz communication system selects the first channel for radar signal monitoring according to the detection notification, and monitors whether a radar signal appears on the first channel during the radar silence duration. The receiving module is configured to receive the detection results sent by the second 5GHz communication system; The channel switching module is configured to switch the service communication from the second channel to the first channel if the detection result indicates that no radar signal has appeared within the radar silence period, and send a second switching notification to the second 5GHz communication system so that the second 5GHz communication system selects a fourth channel for radar signal monitoring according to the second switching notification; the fourth channel is different from the first channel.

[0131] In some embodiments, when the channel information acquisition module is configured to acquire second channel information of a second channel used for radar signal monitoring in the second 5GHz communication system, it includes: The channel monitoring record is obtained from the storage system, which stores the second channel information of the second channel; wherein the storage system is used jointly by the first 5GHz communication system and the second 5GHz communication system; the channel monitoring record is written by the second 5GHz communication system during the current monitoring of the second channel.

[0132] In some embodiments, the second channel information includes timestamp information and the radar silence duration corresponding to the second channel; the timestamp information is used to indicate the duration for which radar signal monitoring has been performed on the second channel; after switching the service communication from the first channel to the second channel, the apparatus further includes: The continuous monitoring module is configured to, before using the second channel for service communication, if the timestamp information indicates that the duration of radar signal monitoring currently performed on the second channel is less than the radar silence duration corresponding to the second channel, then continue to perform radar signal monitoring on the second channel until the duration reaches the radar silence duration corresponding to the second channel. The service communication module is configured to continue service communication using the second channel if no radar signal is detected within the radar silence period corresponding to the second channel.

[0133] In some embodiments, if a radar signal is detected on a first channel used for service communication, the apparatus further includes a radar information recording module configured to: The radar information corresponding to the first channel is recorded in the storage system; The radar information includes at least: the channel number corresponding to the first channel and the radar event information corresponding to the first channel; when the first channel is an aggregated channel formed by channel binding, the channel number corresponding to the first channel includes the channel number of each channel that makes up the aggregated channel; the radar event information includes at least the timestamp information of the radar signal detected on the first channel and the radar avoidance duration configured for the first channel.

[0134] This embodiment also provides another service communication device for FTTR networking, such as... Figure 3B As shown, this device is applied to a second 5GHz communication system in a network used for radar signal monitoring. The network also includes a first 5GHz communication system for service communication. The device comprises: The first monitoring module 301b is configured to select a second channel for radar signal monitoring when the first 5GHz communication system performs service communication based on the first channel. The second monitoring module 302b is configured to select a third channel for radar signal monitoring based on the first switching notification sent by the first 5GHz communication system if it receives the first switching notification. The third channel is different from the first channel and the second channel.

[0135] In some embodiments, the first channel is configured with a radar silence duration; the apparatus further includes: The third monitoring module is configured to select a first channel for radar signal monitoring according to the detection notification if it receives a detection notification sent by the first 5GHz communication system, and monitor whether a radar signal appears on the first channel during the radar silence period. The result return module is configured to send the detection result to the first 5GHz communication system; the detection result is used to indicate whether a radar signal has appeared during the radar silence period. The fourth monitoring module is configured to select a fourth channel for radar signal monitoring based on the second switching notification received from the first 5GHz communication system; the fourth channel is different from the first channel.

[0136] In some embodiments, when the first monitoring module is configured to select a second channel for radar signal monitoring, it includes: During the radar silence period configured for the second channel, detect whether a radar signal appears on the second channel; if a radar signal is detected on the second channel, select a new channel for radar signal monitoring as the new second channel, and return to the step of detecting whether a radar signal appears on the second channel.

[0137] In some embodiments, the apparatus further includes a monitoring record storage module, configured to: During the radar signal monitoring process on the second channel, the channel monitoring record corresponding to the second channel is written to the storage system; wherein, the storage system is used jointly by the first 5GHz communication system and the second 5GHz communication system; the channel monitoring record stores the second channel information of the second channel.

[0138] In some embodiments, the first monitoring module, the second monitoring module, or the fourth monitoring module is configured to select a designated channel for radar signal monitoring, wherein the designated channel is the second channel, the third channel, or the fourth channel, including: The monitoring bandwidth determination module is configured to determine the current monitoring bandwidth based on the working bandwidth of the service communication configuration; The candidate channel detection module is configured to detect whether at least one candidate channel exists among all channels that meet the current monitoring bandwidth within the operating frequency band supported by the first 5GHz communication system, excluding channels occupied by service communication; the candidate channel refers to a channel that is not in radar silence state and is not marked as radar avoidance state. The selection module is configured to select one of the candidate channels as the specified channel if it exists. The monitoring bandwidth update module is configured to, if it does not exist, reduce the current monitoring bandwidth to the next level bandwidth as the new current monitoring bandwidth, and return to the step of detecting whether at least one candidate channel exists, if the current monitoring bandwidth is not the minimum channel bandwidth.

[0139] The specific implementation process of the functions and roles of each unit in the above device can be found in the implementation process of the corresponding steps in the above method, and will not be repeated here.

[0140] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this application according to actual needs. Those skilled in the art can understand and implement this without any inventive effort.

[0141] This application also provides an electronic device, the structural schematic diagram of which is shown below. Figure 4 As shown, the electronic device 400 includes at least one processor 401, a memory 402, and a bus 403. The at least one processor 401 is electrically connected to the memory 402. The memory 402 is configured to store at least one computer-executable instruction, and the processor 401 is configured to execute the at least one computer-executable instruction to perform the steps of any service communication method applied to FTTR networking provided in any embodiment or optional implementation of this application.

[0142] Furthermore, the processor 401 can be an FPGA (Field-Programmable Gate Array) or other devices with logic processing capabilities, such as an MCU (Microcontroller Unit) or a CPU (Central Processing Unit).

[0143] This application also provides another readable storage medium storing a computer program that, when executed by a processor, implements the steps of any of the service communication methods applied to FTTR networking provided in any of the embodiments or optional implementations of this application.

[0144] The readable storage media provided in this application include, but are not limited to, any type of disk (including floppy disk, hard disk, optical disk, CD-ROM, and magneto-optical disk), ROM (Read-Only Memory), RAM (Random Access Memory), EPROM (Erasable Programmable Read-Only Memory), EEPROM (Electrically Erasable Programmable Read-Only Memory), flash memory, magnetic cards, or optical cards. In other words, readable storage media include any medium by which a device (e.g., a computer) stores or transmits information in a readable form.

[0145] Therefore, specific embodiments of the subject matter have been described. The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A service communication method applied to FTTR networking, characterized in that, This method is applied to a first 5GHz communication system in a network used for service communication, the network also including a second 5GHz communication system for radar signal monitoring; the method includes: If a radar signal is detected on the first channel used for business communication, then the second channel information of the second channel used for radar signal monitoring in the second 5GHz communication system is obtained; Based on the second channel information, the service communication is switched from the first channel to the second channel, and a first switching notification is sent to the second 5GHz communication system so that the second 5GHz communication system selects a third channel for radar signal monitoring according to the first switching notification. The third channel is different from the first channel and the second channel.

2. The method according to claim 1, characterized in that, The first channel is configured with radar avoidance duration and radar silence duration; the method further includes: If the duration during which the first channel is prohibited from use reaches the radar avoidance duration, a detection notification is sent to the second 5GHz communication system, so that the second 5GHz communication system selects the first channel for radar signal monitoring according to the detection notification, and monitors whether a radar signal appears on the first channel during the radar silence duration. Receive the detection results sent by the second 5GHz communication system; If the detection result indicates that no radar signal appears within the radar silence period, the service communication is switched from the second channel to the first channel, and a second switching notification is sent to the second 5GHz communication system so that the second 5GHz communication system selects a fourth channel for radar signal monitoring according to the second switching notification; the fourth channel is different from the first channel.

3. The method according to claim 1, characterized in that, The acquisition of the second channel information of the second channel used for radar signal monitoring in the second 5GHz communication system includes: Retrieve channel monitoring records from the storage system, wherein the channel monitoring records store the second channel information of the second channel; The storage system is shared by the first 5GHz communication system and the second 5GHz communication system; the channel monitoring record is written by the second 5GHz communication system during the current monitoring of the second channel.

4. The method according to claim 3, characterized in that, The second channel information includes timestamp information and the radar silence duration corresponding to the second channel; the timestamp information is used to indicate the duration of radar signal monitoring that has been performed on the second channel. After switching the service communication from the first channel to the second channel, the method further includes: Before using the second channel for service communication, if the timestamp information indicates that the duration of radar signal monitoring currently performed on the second channel is less than the radar silence duration corresponding to the second channel, then radar signal monitoring will continue to be performed on the second channel until the duration reaches the radar silence duration corresponding to the second channel. If no radar signal is detected within the radar silence period corresponding to the second channel, the second channel will be used to continue service communication.

5. The method according to claim 3, characterized in that, If a radar signal is detected on the first channel used for service communication, the method further includes: The radar information corresponding to the first channel is recorded in the storage system; The radar information includes at least: the channel number corresponding to the first channel and the radar event information corresponding to the first channel; when the first channel is an aggregated channel formed by channel binding, the channel number corresponding to the first channel includes the channel number of each channel that makes up the aggregated channel; the radar event information includes at least the timestamp information of the radar signal detected on the first channel and the radar avoidance duration configured for the first channel.

6. A service communication method applied to FTTR networking, characterized in that, This method is applied to a second 5GHz communication system in a network used for radar signal monitoring, the network also including a first 5GHz communication system used for service communication; the method includes: When the first 5GHz communication system performs service communication based on the first channel, the second channel is selected for radar signal monitoring; If a first handover notification is received from the first 5GHz communication system, a third channel is selected for radar signal monitoring according to the first handover notification. The third channel is different from the first channel and the second channel.

7. The method according to claim 6, characterized in that, The first channel has been configured with a radar silence duration; the method further includes: If a detection notification is received from the first 5GHz communication system, the first channel is selected for radar signal monitoring according to the detection notification, and radar signals are monitored on the first channel during the radar silence period. Send the detection result to the first 5GHz communication system; the detection result is used to indicate whether a radar signal appears during the radar silence period; If a second handover notification is received from the first 5GHz communication system, a fourth channel is selected for radar signal monitoring according to the second handover notification; the fourth channel is different from the first channel.

8. The method according to claim 6, characterized in that, The selection of the second channel for radar signal monitoring includes: During the radar silence period configured for the second channel, detect whether a radar signal appears on the second channel; If a radar signal is detected on the second channel, a new channel for radar signal monitoring is selected as the new second channel, and the process returns to the step of detecting whether a radar signal is detected on the second channel.

9. The method according to claim 6, characterized in that, The method further includes: During the radar signal monitoring process on the second channel, the channel monitoring record corresponding to the second channel is written to the storage system; The storage system is shared by the first 5GHz communication system and the second 5GHz communication system; the channel monitoring record stores the second channel information of the second channel.

10. The method according to claim 7, characterized in that, Selecting a designated channel for radar signal monitoring, wherein the designated channel is the second channel, the third channel, or the fourth channel, including: Determine the current monitoring bandwidth based on the working bandwidth configured in the service communication settings; Within the operating frequency band supported by the first 5GHz communication system, among all channels that meet the current monitoring bandwidth, for channels other than those occupied by service communication, it is detected whether there is at least one candidate channel; the candidate channel refers to a channel that is not in radar silence state and is not marked as radar avoidance state. If one exists, select one of the candidate channels as the specified channel; If it does not exist, and the current monitoring bandwidth is not the minimum channel bandwidth, the current monitoring bandwidth is reduced to the next level bandwidth as the new current monitoring bandwidth, and the process returns to the step of detecting whether at least one candidate channel exists.

11. A service communication device applied to FTTR networking, characterized in that, This device is used in a first 5GHz communication system for service communication in a network, which also includes a second 5GHz communication system for radar signal monitoring; the device comprises: The channel information acquisition module is configured to acquire the second channel information of the second channel used for radar signal monitoring in the second 5GHz communication system if a radar signal is detected on the first channel used for service communication. The channel switching module is configured to switch the service communication from the first channel to the second channel based on the second channel information, and send a first switching notification to the second 5GHz communication system so that the second 5GHz communication system selects a third channel for radar signal monitoring according to the first switching notification, wherein the third channel is different from the first channel and the second channel.

12. A service communication device applied to FTTR networking, characterized in that, This device is used in a second 5GHz communication system for radar signal monitoring in a network, which also includes a first 5GHz communication system for service communication; the device includes: The first monitoring module is configured to select a second channel for radar signal monitoring when the first 5GHz communication system performs service communication based on the first channel; When the first 5GHz communication system performs service communication based on the first channel, the channel currently used for radar signal monitoring is selected as the second channel; The second monitoring module is configured to select a third channel for radar signal monitoring based on the first switching notification sent by the first 5GHz communication system if it receives the first switching notification. The third channel is different from the first channel and the second channel.

Images