Router device and interference adaptation method thereof

Abstract

This disclosure discloses a router device and its interference adaptation method. The interference adaptation method is applicable to a router device including multiple antennas and includes the following steps: Detecting an interference state in a frequency band. When the interference state of the frequency band meets a disabling condition, identifying at least one sub-channel in this frequency band that is subject to interference. Performing a perforation on the frequency band based on the at least one sub-channel in this frequency band to configure the at least one sub-channel in this frequency band as disabled. Performing a channel availability check on the at least one sub-channel in the disabled state. Based on the result of the channel availability check, restoring the at least one sub-channel from the disabled state to an available state.

Description

Technical Field

[0001] This disclosure relates to a router device and its interference adaptation method. Prior Technology

[0002] In modern wireless communication networks (such as Wi-Fi), efficient use of spectrum resources is crucial for network performance stability and user experience. However, because Wi-Fi devices share the spectrum with other non-Wi-Fi devices (such as radar), channel interference has become one of the main challenges affecting network performance. To avoid impacting critical equipment such as radar, Wi-Fi systems must adhere to the Dynamic Frequency Selection (DFS) specification. When a Wi-Fi device detects interference on a channel from a non-Wi-Fi device (such as radar), it must immediately stop using that channel and enter a "non-occupancy period." During this period, the Wi-Fi device cannot transmit data and must wait for a specified time to ensure the channel is no longer interfered with. Only after the non-occupancy period ends can the device reassess the channel's availability. However, this process often leads to reduced bandwidth utilization and network performance instability. Summary of the Invention

[0003] This disclosure provides an interference adaptation method applicable to router devices including multiple antennas, and includes the following steps: Detecting the interference state of a Dynamic Frequency Selection (DFS) band. When the interference state of the DFS band meets a disable condition, identifying at least one sub-channel in the DFS band that is interfered with. Performing a puncturing operation on the DFS band based on the at least one sub-channel that is interfered with, thereby configuring the at least one sub-channel in the DFS band to a disabled state. Performing a channel availability check on the at least one sub-channel in the disabled state. Based on the result of the channel availability check, restoring the at least one sub-channel from the disabled state to an available state.

[0004] This disclosure also provides a router device including multiple antennas, a transceiver, a storage device, and a processor. The transceiver is connected to the multiple antennas. The processor is coupled to the transceiver and the storage device and configured to perform the following operations: Detecting interference status in a DFS band. When the interference status of the DFS band meets a disable condition, identifying at least one sub-channel in the DFS band that is interfered with. Performing a puncturing operation on the DFS band based on the at least one sub-channel that is interfered with, thereby disabling at least one sub-channel in the DFS band. Performing a channel availability check on the at least one sub-channel in the disabled state. Based on the result of the channel availability check, restoring at least one sub-channel from the disabled state to an available state.

[0005] Based on the above, in this disclosed embodiment, after detecting the interference state of the DFS band, a puncturing operation can be performed on the DFS band based on at least one sub-channel that is interfered with. Thus, at least one sub-channel in the DFS band that is interfered with can be configured to be disabled. Subsequently, by performing a channel availability check on the disabled sub-channel, at least one sub-channel can be restored from the disabled state to an available state based on the check result. In this way, spectrum utilization can be improved and sensitivity to interference can be reduced. Simple Explanation of the Diagram

[0006] Figure 1 is a schematic diagram of a network system according to an embodiment of the present disclosure. Figure 2 is a schematic diagram of a router device according to an embodiment of the present disclosure. Figure 3 is a flowchart of an interference adaptation method according to an embodiment of the present disclosure. Figure 4 is a schematic diagram of an interference adaptation method according to an embodiment of the present disclosure. Figure 5 is a flowchart of an interference adaptation method according to an embodiment of the present disclosure. Figure 6 is a schematic diagram of a single antenna performing CAC on multiple sub-channels according to an embodiment of this disclosure. Figure 7 is a flowchart of an interference adaptation method according to an embodiment of the present disclosure. Figure 8 is a schematic diagram of CAC performed on multiple sub-channels by multiple antenna pairs according to an embodiment of this disclosure. Implementation

[0007] Reference will now be made in detail to exemplary embodiments of the invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same component reference numerals are used in the drawings and description to denote the same or similar parts. These embodiments are only a part of the invention and do not disclose all possible implementations of the invention. Rather, these embodiments are merely examples of apparatuses and methods within the scope of the patent application of this invention.

[0008] Please refer to Figure 1, which is a schematic diagram of a wireless network system according to an embodiment of this disclosure. The wireless network system 10 may include a router device 110 and multiple terminal devices 120. The router device 110 acts as a gateway for connecting to the public Internet. The router device 110 may connect to the Internet via a modem or fiber optic converter from an Internet Service Provider (ISP). In some embodiments, the router device 110 may be connected to the ISP's modem via wired or wireless means. Alternatively, the ISP's modem may be integrated into the router device 110.

[0009] In some embodiments, router device 110 may use the 2.4GHz, 5GHz, or 6GHz frequency band to wirelessly communicate with terminal devices. Terminal device 120 may connect to router device 110 using a single SSID. Terminal device 120 may be, for example, a smartphone, tablet, game console, laptop, desktop computer, smart home appliance, IoT device, etc., and this disclosure is not limited thereto.

[0010] In some embodiments, router device 110 may be a wireless router that provides wireless communication functionality based on the WiFi protocol. In some embodiments, router device 110 supports the IEEE 802.11 protocol.

[0011] Please refer to Figure 2, which is a schematic diagram of a router device according to an embodiment of this disclosure. The router device 110 may include a plurality of antennas 114, a transceiver 111, a storage device 112, and a processor 113. The plurality of antennas 114 may be connected to the transceiver 111. The processor 113 is coupled to the transceiver 111 and the storage device 112.

[0012] Multiple antennas 114 are used to transmit and receive wireless signals. In some embodiments, the multiple antennas 114 may form one or more antenna arrays. In other words, these antennas 114 may be antenna array elements of one or more antenna arrays. In some embodiments, the configuration of the multiple antennas 114 may support dual-band or tri-band operation, such as the 2.4 GHz, 5 GHz and 6 GHz bands.

[0013] Transceiver 111 can transmit and receive signals wirelessly or via a wired connection. The transceiver can also perform operations such as low-noise amplification, impedance matching, mixing, up- or down-frequency conversion, filtering, amplification, and similar functions. Router device 110 can receive and transmit data through transceiver 111.

[0014] Storage device 112 is used to store data such as files, instructions, program code, software modules, etc., and may be, for example, any type of fixed or removable random access memory (RAM), read-only memory (ROM), flash memory or other similar devices, integrated circuits or combinations thereof.

[0015] Processor 113 is, for example, a programmable general-purpose or special-purpose microprocessor, digital signal processor (DSP), programmable controller, application-specific integrated circuit (ASIC), programmable logic device (PLD), or other similar device or combination of these devices.

[0016] Processor 113 can execute code, software / firmware modules, instructions, etc., recorded in storage device 112 to implement the interference adaptation method of the present disclosure embodiments. That is, in some embodiments, processor 113 can be configured to perform the operation of router device 110 described below.

[0017] Please refer to Figure 3, which is a flowchart of an interference adaptation method according to an embodiment of this disclosure. The method of this embodiment can be executed by the router device 110 of Figures 1 and 2. The details of each step in Figure 3 are explained below with reference to the components shown in Figure 2.

[0018] In step S310, the processor 113 can detect an interference state in a frequency band, which may be a Dynamic Frequency Selection (DFS) band or other types of frequency bands. In step S320, the processor 113 can determine whether the interference state of this frequency band meets a disable condition. In some embodiments, the frequency bands operable by the router device 110 include DFS bands and non-DFS bands. When interference occurs, taking the DFS band as an example, the DFS band can be shared by wireless communication (such as Wi-Fi) and radar systems simultaneously. According to current standards, the DFS mechanism requires the router device 110 to check whether there is a radar signal in the DFS band before enabling it.

[0019] In some embodiments, the DFS band is part of the 5 GHz band and may include both the U-NII-2A and U-NII-2C bands. The U-NII-2A band may include DFS channels 36 to 48, covering the range of 5250 MHz to 5350 MHz. The U-NII-2C band may include DFS channels 100 to 140, covering the range of 5470 MHz to 5725 MHz. However, the DFS and non-DFS bands of the 5 GHz Wi-Fi spectrum may vary by country / region, depending on local DFS regulations, and this disclosure is not limiting in this regard.

[0020] In some embodiments, the processor 113 can detect whether a frequency band is interfered with by a specific signal. This specific signal may include a radar signal, a microwave oven signal, a Bluetooth connection signal, etc. If the frequency band is interfered with by a specific signal, the processor 113 can determine that the interference status of the frequency band meets the disable conditions. Specifically, the processor 113 can perform a Channel Available Check (CAC) on the frequency band to detect whether a radar signal, microwave oven signal, or Bluetooth connection signal appears in the target frequency band. When the result of the Channel Available Check indicates that an interfering signal exists in the frequency band, the processor 113 can determine that the interference status of the frequency band meets the disable conditions.

[0021] In some embodiments, processor 113 can detect the channel quality of the frequency band. For example, processor 113 can detect the signal-to-noise ratio (SNR), received signal strength (RSSI), latency, or packet loss rate of the frequency band. Processor 113 can determine whether the interference status of the frequency band meets a disabling condition based on the comparison result of the channel quality of the frequency band with the corresponding threshold value. For example, processor 113 can detect the SNR of a certain DFS channel in the DFS band. When the SNR of the DFS channel is less than the threshold value, processor 113 can determine that the DFS channel in the DFS band meets the disabling condition.

[0022] In step S330, when the interference state of the frequency band meets a disable condition, the processor 113 can identify at least one sub-channel in the frequency band that is being interfered with. Specifically, based on the CAC check results or channel quality of each of the multiple sub-channels in the frequency band, the processor 113 can identify at least one sub-channel in the frequency band that is being interfered with. For example, when the processor 113 performs CAC on the sub-channels of multiple DFS channels in the DFS frequency band and finds a radar signal in a certain sub-channel of a certain DFS channel, the processor 113 can identify that the sub-channel is being interfered with.

[0023] In different embodiments, a sub-channel in a frequency band can be a channel within that band. Alternatively, a sub-channel in a frequency band can be a sub-channel below a channel within that band. A sub-channel may include at least one Resource Unit (RU).

[0024] In step S340, processor 113 may perform puncturing on the frequency band based on at least one sub-channel that is interfered with, thereby disabling at least one sub-channel in the frequency band. By performing puncturing on the frequency band, the interfered sub-channel can be disabled, thereby maximizing spectrum utilization. Specifically, processor 113 may mark the interfered sub-channel as disabled to prevent data transmission on these sub-channels. In addition, processor 113 may perform preamble puncturing. Preamble puncturing can preserve some bandwidth in the presence of interference, preventing the frequency band or channel from becoming completely ineffective. Processor 113 may adjust the preamble of the signal to notify terminal device 120 which sub-channels are disabled, ensuring that data is transmitted on available sub-channels. For example, in the preamble of the data packet, processor 113 may omit information related to disabled sub-channels, retaining only information about available sub-channels. Afterwards, processor 113 may remove the interfered sub-channel from the spectrum allocation table and reassign the remaining undisturbed sub-channels to the user data stream.

[0025] For example, please refer to Figure 4, which is a schematic diagram of an interference adaptation method according to an embodiment of this disclosure. The processor 113 can detect the presence of radar signal RS1 in sub-channel 411 by performing CAC. The processor 113 can perform puncturing to disable sub-channel 411, thus configuring sub-channel 411 in the DFS band to a disabled state. Furthermore, the processor 113 can reconfigure spectrum resources to continue data transmission using the uninterrupted frequency bands 412 and 413. In other words, the remaining frequency bands 412 and 413 will be allocated to the data stream to ensure maximum spectrum utilization.

[0026] Subsequently, in step S350, processor 113 may perform a channel availability check on at least one subchannel that is in a disabled state. In some embodiments, when processor 113 configures at least one subchannel in the DFS band to a disabled state, the interfered subchannel may enter a non-occupancy period (NOP). The preset length of the non-occupancy period may be 30 minutes, but is not limited to this. When a subchannel enters the non-occupancy period, router device 110 prohibits transmission on that subchannel. After a subchannel in the DFS band is configured to a disabled state, processor 113 may perform CAC again on that subchannel.

[0027] In some embodiments, the processor 113 may determine whether the disabled time of at least one sub-channel exceeds a threshold value. When the disabled time of at least one sub-channel exceeds the threshold value (e.g., 30 minutes), the processor 113 may perform a channel availability check on the at least one sub-channel in the disabled state. Specifically, the threshold value may be a preset length of the unoccupied period. That is, when the disabled time of a sub-channel exceeds the preset length of the unoccupied period, the processor 113 may perform CAC again on the sub-channel.

[0028] In step S360, the processor 113 may restore at least one sub-channel from a disabled state to an available state based on the channel availability check result. That is, when the CAC check result of a sub-channel in the disabled state indicates that the radar signal no longer exists in the sub-channel, the processor 113 may restore the sub-channel to an available state.

[0029] For example, referring again to Figure 4, processor 113 can perform CAC on subchannel 411, which is in a disabled state. When the CAC check result of subchannel 411 indicates that the radar signal no longer exists in subchannel 411, processor 113 can restore subchannel 411 from a disabled state to an available state. Afterwards, processor 113 can use the full DFS channel 415 for data transmission. For example, processor 113 can decide whether to migrate the data stream back to subchannel 411 or use the larger bandwidth resulting from merging subchannel 411 to transmit the data stream.

[0030] Therefore, when interference occurs in a frequency band, the router device 110 does not need to completely shut down the entire frequency band or channel, but only adjusts the specific sub-channels affected, thereby minimizing the negative impact of interference on the overall network speed. Furthermore, by continuing to monitor these sub-channels that have entered their unoccupied period, a rapid response to external interference can be made, effectively improving spectrum utilization.

[0031] It should be noted that, in different embodiments, the interfering portion may include the DFS band or other bands. That is, when interference occurs in any band, the router device 110 can perform a puncturing operation to disable the interfered sub-channel without affecting the use of the entire band. In this way, the router device 110 can dynamically analyze data traffic patterns and user demands in the network, and perform real-time channel monitoring and reallocation based on the interference situation, thereby improving spectrum utilization and network stability.

[0032] Please refer to Figure 5, which is a flowchart of an interference adaptation method according to an embodiment of this disclosure. The method of this embodiment can be executed by the router device 110 of Figures 1 and 2. The details of each step in Figure 5 are explained below with reference to the components shown in Figure 2.

[0033] In step S510, processor 113 can detect an interference state in a frequency band. In step S520, processor 113 can determine whether the interference state of the frequency band meets a disable condition.

[0034] In some embodiments, step S510 may be implemented as steps S511 to S512. In step S511, processor 113 may divide a channel in the frequency band into multiple sub-channels. In step S512, processor 113 may detect the interference status of the multiple sub-channels of the channel. For example, taking the DFS channel as an example, processor 113 may divide the DFS channel 36 of the 5G band into multiple DFS sub-channels. In some embodiments, processor 113 may divide the DFS band into multiple DFS sub-channels according to the user demand and real-time data traffic of terminal device 120. Then, processor 113 may detect the interference status of these DFS sub-channels respectively, that is, perform CAC on these DFS sub-channels respectively. In different embodiments, processor 113 may perform CAC on these DFS sub-channels sequentially or synchronously through one or more antennas 114.

[0035] In step S530, when the interference state of the frequency band meets a disable condition, the processor 113 can identify at least one sub-channel in the frequency band that is being interfered with. Specifically, when a radar signal is detected from a certain sub-channel in the frequency band or when the communication quality of a certain sub-channel is detected to be unsatisfactory, the processor 113 can identify the sub-channel that is being interfered with from the frequency band. That is to say, in some embodiments, the at least one sub-channel that is being interfered with can be at least one of a plurality of sub-channels.

[0036] In step S540, the processor 113 may perform a perforation on the frequency band based on at least one sub-channel in the frequency band that is subject to interference, thereby configuring at least one sub-channel in the frequency band to a disabled state. In step S550, the processor 113 may determine whether the disabled time of at least one sub-channel in the disabled state exceeds a threshold value. When the disabled time of at least one sub-channel in the disabled state exceeds the threshold value, the processor 113 may perform a channel availability check on the at least one sub-channel in the disabled state. The detailed implementation of steps S540 to S550 can be referred to the foregoing embodiments for description, and will not be repeated here.

[0037] It should be noted that when multiple sub-channels are configured to be disabled due to interference, the processor 113 will determine whether the disabled time of these sub-channels exceeds the threshold value.

[0038] Subsequently, in step S560, the processor 113 may use the first antenna among the plurality of antennas 114 to perform channel availability checks on the first and second sub-channels that are in a disabled state. Specifically, in some embodiments, the interfered sub-channels include a first sub-channel and a second sub-channel. In the embodiment of FIG5, the processor 113 may use a single antenna to perform CAC on the interfered first sub-channel and the interfered second sub-channel respectively.

[0039] In some embodiments, processor 113 may control a first antenna (i.e., one of the plurality of antennas 114) to switch to a first sub-channel and perform CAC on the first sub-channel that is in a disabled state using the first antenna. Then, processor 113 may control the first antenna (i.e., the same one of the plurality of antennas 114) to switch from the first sub-channel to a second sub-channel and perform CAC on the second sub-channel that is in a disabled state using the first antenna.

[0040] For example, please refer to Figure 6, which is a schematic diagram of a single antenna performing CAC on multiple sub-channels according to an embodiment of this disclosure. In this example, it is assumed that the antenna 114 of the router device 110 may include four antennas A61 to A64. The processor 113 may use antenna A61 to perform CAC on sub-channel 61, which is in a disabled state. Then, the processor 113 may control antenna A61 to switch from sub-channel 61 to sub-channel 62 to perform CAC on sub-channel 62, which is in a disabled state. At the same time, the remaining antennas A62 to A64 are used to communicate with the terminal device 120. That is, in some embodiments, when multiple sub-channels enter an unoccupied period, the processor 113 may control a single antenna to perform CAC on multiple sub-channels in turn to determine in sequence whether these sub-channels can be restored to an available state.

[0041] In step S570, the processor 113 may restore at least one sub-channel from a disabled state to an available state based on the channel availability check result. That is, the processor 113 may restore the first sub-channel from a disabled state to an available state based on the CAC check result of the first sub-channel. In addition, the processor 113 may restore the second sub-channel from a disabled state to an available state based on the CAC check result of the second sub-channel.

[0042] Please refer to Figure 7, which is a flowchart of an interference adaptation method according to an embodiment of this disclosure. The method of this embodiment can be executed by the router device 110 of Figures 1 and 2. The details of each step in Figure 7 are explained below with reference to the components shown in Figure 2.

[0043] In step S710, processor 113 can detect an interference state in a frequency band. In step S711, processor 113 can divide a channel in the frequency band into multiple sub-channels. In step S712, processor 113 can detect the interference state of multiple sub-channels of the channel. In step S720, processor 113 can determine whether the interference state of the frequency band meets a disabling condition. In step S730, when the interference state of the frequency band meets a disabling condition, processor 113 can identify at least one sub-channel in the frequency band that is being interfered with.

[0044] In step S740, the processor 113 may perform a perforation on the frequency band based on at least one sub-channel in the frequency band that is subject to interference, thereby configuring at least one sub-channel in the frequency band to a disabled state. In step S750, the processor 113 may determine whether the disabled time of at least one sub-channel in the disabled state exceeds a threshold value. When the disabled time of at least one sub-channel in the disabled state exceeds the threshold value, the processor 113 may perform a channel availability check on the at least one sub-channel in the disabled state. The detailed implementation of steps S710 to S750 can be referred to the foregoing embodiments for description, and will not be repeated here.

[0045] In step S760, processor 113 may use a first antenna among the plurality of antennas 114 to perform a channel availability check on a first sub-channel that is in a disabled state. In step S770, processor 113 may use a second antenna among the plurality of antennas 114 to perform a channel availability check on a second sub-channel that is in a disabled state. The first antenna is different from the second antenna. Specifically, in some embodiments, the interfered sub-channel includes both the first sub-channel and the second sub-channel. In the embodiment of FIG. 7, processor 113 may use different antennas to perform CAC on the interfered first sub-channel and the interfered second sub-channel respectively.

[0046] For example, please refer to Figure 8, which is a schematic diagram of CAC performed by multiple antennas on multiple sub-channels according to an embodiment of this disclosure. In this example, it is assumed that the antenna 114 of the router device 110 may include four antennas A61 to A64. The processor 113 may use antenna A61 to perform CAC on the sub-channel 61 that is in a disabled state. In addition, the processor 113 may use antenna A62 to perform CAC on the sub-channel 62 that is in a disabled state. At the same time, the remaining antennas A63 to A64 are used to communicate with the terminal device 120. That is, in some embodiments, when multiple sub-channels enter an unoccupied period, the processor 113 may control multiple antennas to perform CAC on multiple sub-channels simultaneously.

[0047] In step S780, the processor 113 may restore at least one sub-channel from a disabled state to an available state based on the channel availability check result. That is, the processor 113 may restore the first sub-channel from a disabled state to an available state based on the CAC check result of the first sub-channel. In addition, the processor 113 may restore the second sub-channel from a disabled state to an available state based on the CAC check result of the second sub-channel.

[0048] In summary, in this disclosed embodiment, a frequency band can be divided into multiple sub-channels as needed, and interference status can be detected for these sub-channels. Then, perforation can be performed on the interfered sub-channels within the frequency band to configure them as disabled, without requiring the entire channel to be used. Subsequently, by performing CAC on the disabled sub-channels, the sub-channels can be restored to an available state based on the CAC check results, allowing for a faster and more appropriate response to external interference. This enables real-time monitoring and dynamic adjustment of channel status, improving spectrum utilization and reducing sensitivity to interference.

[0049] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

[0050] 10: Wireless Network System 110: Router device 120: Terminal device 111: Transceiver 112: Storage device 113: Processor 114, A61~A64: Antenna RS1: Radar signal 411,61,62: Sub-channels 412, 413: Frequency bands 415: DFS Channel S310~S360, S511~S580, S711~S780: Steps

Claims

1. An interference adaptation method applicable to a router device including multiple antennas, the method comprising: Detecting interference in a frequency band; When the interference state of the frequency band meets a disable condition, identify at least one sub-channel in the frequency band that is being interfered with; Based on the at least one sub-channel in the frequency band that is interfered with, a puncturing process is performed on the frequency band to configure the at least one sub-channel in the frequency band as disabled; a channel availability check (CAC) is performed on the at least one sub-channel in the disabled state; and based on the result of the channel availability check, the at least one sub-channel is restored from the disabled state to an available state.

2. The interference adaptation method as described in claim 1, wherein the step of detecting the interference state of the frequency band includes: Detect whether the frequency band is interfered with by a specific signal, wherein if the frequency band is interfered with by the specific signal, the interference state of the frequency band meets the disable condition.

3. The interference adaptation method as described in claim 2, wherein the specific signal includes a radar signal and the frequency band includes a Dynamic Frequency Selection (DFS) band.

4. The interference adaptation method as described in claim 1, wherein the step of detecting the interference state of the frequency band includes: Divide one channel in the frequency band into multiple sub-channels; And to detect the interference status of the plurality of sub-channels of the channel.

5. The interference adaptation method as described in claim 4, wherein at least one of the plurality of sub-channels is subject to interference.

6. The interference adaptation method as described in claim 1, wherein the at least one sub-channel comprises a first sub-channel and a second sub-channel, and the step of performing the channel availability check on the at least one sub-channel in the disabled state comprises: Using the first antenna among the plurality of antennas, the channel availability check is performed on the first sub-channel and the second sub-channel that are in the disabled state.

7. The interference adaptation method as described in claim 6, wherein the step of performing the channel availability check on the first sub-channel and the second sub-channel in the disabled state using the first antenna of the plurality of antennas includes: Control the first antenna to switch to the first sub-channel, and use the first antenna to perform the channel availability check on the first sub-channel that is in the disabled state; And control the first antenna to switch from the first sub-channel to the second sub-channel, and use the first antenna to perform the channel availability check on the second sub-channel that is in the disabled state.

8. The interference adaptation method as described in claim 1, wherein the at least one sub-channel comprises a first sub-channel and a second sub-channel, and the step of performing the channel availability check on the at least one sub-channel in the disabled state comprises: Using the first antenna among the plurality of antennas, the channel availability check is performed on the first sub-channel that is in the disabled state; And using the second antenna among the plurality of antennas, the channel availability check is performed on the second sub-channel that is in the disabled state.

9. The interference adaptation method as described in claim 1, wherein the step of performing the channel availability check on the at least one sub-channel in the disabled state includes: Determine whether the time during which the at least one sub-channel is in the disabled state exceeds a threshold value; And when the at least one sub-channel is in the disabled state for a period of time exceeding the threshold value, the channel availability check is performed on the at least one sub-channel in the disabled state.

10. A router device, comprising: Multiple antennas; Transceiver, connected to the plurality of antennas; Storage device; The transceiver and the storage device are coupled to a processor configured to: detect an interference state in a frequency band; identify at least one sub-channel in the frequency band that is being interfered with when the interference state in the frequency band meets a disable condition; perform a perforation on the frequency band based on the at least one sub-channel in the frequency band that is being interfered with, so as to configure the at least one sub-channel in the frequency band to a disabled state; perform a channel availability check on the at least one sub-channel in the disabled state; and restore the at least one sub-channel from the disabled state to an available state based on the result of the channel availability check.

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