Signal self-interference avoidance method, device, and storage medium

Abstract

The application provides a signal self-interference avoidance method, device and storage medium, and relates to the technical field of communication. The method comprises the following steps: acquiring an LTE frequency band currently worked by a 5G module, and acquiring an interfered WiFi frequency band corresponding to the LTE frequency band according to a frequency band interference table; acquiring a channel configuration table of a standard frequency band to which the interfered WiFi frequency band belongs; determining whether a current working channel is an interfered WiFi channel according to the current working channel, the interfered WiFi frequency band and the channel configuration table of the WiFi module; and if yes, performing a channel switching operation. According to the method, the current working channel information and the frequency band interference table are acquired, the channel configuration table is updated and a new working channel is re-optimized, the processing method is easy to execute, the original wireless device does not need to be replaced, the configuration cost is reduced, the hidden harmonic interference in the self-interference is eliminated by using the spectrum analysis method, and the self-interference processing process of the device is improved.

Description

Technical Field

[0001] This application relates to communication technology, and more particularly to a signal self-interference avoidance method, device and storage medium. Background Technology

[0002] A 5G CPE (Customer Premise Equipment) is a type of 5G terminal device. Its function is to convert mobile communication signals or wired broadband signals into local area network (LAN) signals and WiFi signals for user devices. 5G CPE combines the low cost of WiFi with the high bandwidth of 5G, forming a powerful supplement to traditional fiber optic broadband. It can be widely used in rural areas, towns, hospitals, offices, factories, and residential communities for wireless network access, saving the cost of laying wired networks.

[0003] With the expansion of WiFi frequency bands to two major bands, 2.4GHz and 5GHz, and the fact that 5G modules switch to 4G or 3G for internet access when the signal is weak, there is more overlap between the two signal frequency bands. This has led to increasingly serious interference between WiFi and 5G module signals. Furthermore, with the increasing prevalence of devices and the growing number of home gateways, the sources of wireless signal interference are multiplying, severely impacting user experience. Therefore, solving the problem of self-interference between WiFi and module signals within 5G CPEs is urgently needed. In existing solutions, when the system detects that the 5G module is currently using a 5G signal to connect to a public cellular network, it shuts down the device's 5G WiFi and provides a 2.4GHz WiFi signal to downstream customers.

[0004] The existing solution described above, which uses the method of discarding 5G WiFi signals to ensure 5G module signals, does not fundamentally solve the problem and also reduces the internet speed of local devices, causing downstream devices to unexpectedly disconnect, thus failing to meet engineering requirements. Summary of the Invention

[0005] This application provides a signal self-interference avoidance method, device and storage medium to solve the problem in the prior art that the method of discarding 5G WiFi to ensure the signal of 5G module does not completely avoid interference and also causes the WiFi speed of local device to decrease and unexpected disconnection.

[0006] In a first aspect, this application provides a signal self-interference avoidance method applied to a CPE device, the CPE device including a 5G module and a WiFi module, the method comprising:

[0007] Obtain the LTE frequency band currently operating of the 5G module, and obtain the corresponding interfered WiFi frequency band according to the frequency band interference table, which stores the correspondence between LTE frequency bands and interfered WiFi frequency bands;

[0008] Obtain the channel configuration table of the standard frequency band to which the interfered WiFi frequency band belongs, wherein the channel configuration table stores the correspondence between channels and frequency bands;

[0009] Based on the current operating channel of the WiFi module, the interfered WiFi frequency band, and the channel configuration table, determine whether the current operating channel is an interfered WiFi channel;

[0010] If the current operating channel of the WiFi module is an interfered WiFi channel, a channel switching operation is performed.

[0011] In one possible design, determining whether the current operating channel is an interfered WiFi channel based on the current operating channel of the WiFi module, the interfered WiFi frequency band, and the channel configuration table includes:

[0012] Obtain the target channel corresponding to the interfered WiFi frequency band from the channel configuration table;

[0013] Determine whether the current working channel and the target channel are consistent;

[0014] If they match, then the current working channel is determined to be an interfered WiFi channel.

[0015] In one possible design, the channel switching operation includes:

[0016] Remove the target channel from the channel configuration table;

[0017] Based on the channel selection strategy, select a new channel from the remaining channels in the channel configuration table;

[0018] Switch the WiFi module from the current channel to the new channel.

[0019] In one possible design, before switching the WiFi module from the current channel to the new channel, the method further includes:

[0020] Turn on the channel switching switch corresponding to the standard frequency band, wherein the channel switching switch is used to switch the WiFi module from the current channel to the new channel;

[0021] After determining that the channel switching switch is turned on, it is determined whether the optimized channel enable switch is turned on. When the optimized channel enable switch is turned on, it is used by the WiFi module to select a new channel.

[0022] In one possible design, if the optimized channel enable switch is off, the method further includes:

[0023] Determine whether the WiFi module has any connected devices;

[0024] If a downstream device exists, a channel switching operation is performed when the downstream device detaches from the WiFi module.

[0025] In one possible design, the standard frequency band is either the 2.4 GHz band or the 5 GHz band.

[0026] In one possible design, before obtaining the interfered WiFi frequency band corresponding to the LTE frequency band according to the frequency band interference table, the method further includes:

[0027] The actual interference data of the 5G module to the WiFi module is obtained based on the signal interference measurement system;

[0028] The frequency band interference table is obtained based on the frequency bands supported by the preset area and the actual interference data.

[0029] Secondly, this application provides a signal self-interference avoidance device, comprising:

[0030] The first acquisition module is used to acquire the LTE frequency band currently operating of the 5G module, and to acquire the interfered WiFi frequency band corresponding to the LTE frequency band according to the frequency band interference table. The frequency band interference table stores the correspondence between LTE frequency bands and interfered WiFi frequency bands.

[0031] The second acquisition module is used to acquire the channel configuration table of the standard frequency band to which the interfered WiFi frequency band belongs, and the channel configuration table stores the correspondence between channels and frequency bands;

[0032] The determination module is used to determine whether the current working channel is an interfered WiFi channel based on the current working channel of the WiFi module, the interfered WiFi frequency band, and the channel configuration table;

[0033] The processing module is used to perform a channel switching operation if the current working channel of the WiFi module is an interfered WiFi channel.

[0034] Thirdly, this application provides an electronic device, including: a processor, and a memory communicatively connected to the processor;

[0035] The memory stores computer-executed instructions;

[0036] The processor executes computer execution instructions stored in the memory to implement a signal self-interference avoidance method.

[0037] Fourthly, this application provides a computer-readable storage medium storing computer-executable instructions, which, when executed by a processor, are used to implement a signal self-interference avoidance method.

[0038] The signal self-interference avoidance method, device, and storage medium provided in this application obtain the LTE frequency band currently operating on the 5G module and obtain the corresponding interfered WiFi frequency band according to a frequency band interference table, which stores the correspondence between LTE frequency bands and interfered WiFi frequency bands; obtain the channel configuration table of the standard frequency band to which the interfered WiFi frequency band belongs, which stores the correspondence between channels and frequency bands; determine whether the current operating channel of the WiFi module is an interfered WiFi channel based on the current operating channel of the WiFi module, the interfered WiFi frequency band, and the channel configuration table; if the current operating channel of the WiFi module is an interfered WiFi channel, perform a channel switching operation to ensure that the wireless signals of the 5G module and WiFi are always free from interference. By obtaining the current operating channel information and cooperating with the frequency band interference table, the channel configuration table is updated and a new operating channel is reselected. The processing method is easy to implement, does not require replacement of the original wireless equipment, reduces configuration costs, and uses spectrum analysis methods to eliminate hidden harmonic interference in self-interference, thus improving the self-interference processing of the device. Attached Figure Description

[0039] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0040] Figure 1 This is a schematic diagram of the internal system structure of the CPE device provided in the embodiments of this application;

[0041] Figure 2 This is a schematic diagram of the internal signal self-interference measurement principle of the signal interference measurement system provided in the embodiments of this application;

[0042] Figure 3 This is a schematic diagram of frequency band overlap for signal self-interference provided in an embodiment of this application;

[0043] Figure 4 A flowchart illustrating the signal self-interference avoidance method provided in this application embodiment. Figure 1 ;

[0044] Figure 5 A flowchart illustrating the signal self-interference avoidance method provided in this application embodiment. Figure 2 ;

[0045] Figure 6 This is a schematic diagram of the structure of the signal self-interference avoidance device provided in the embodiments of this application;

[0046] Figure 7 This is a schematic diagram of the hardware structure of the electronic device provided in the embodiments of this application. Detailed Implementation

[0047] 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 represent 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, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without inventive effort are within the scope of protection of this invention.

[0048] First, the relevant concepts or terms involved in this application will be explained:

[0049] Frequency Division Duplex (FDD) refers to a wireless communication system in which the uplink (from mobile station to base station) and downlink (from base station to mobile station) operate on two separate frequencies (with certain frequency spacing requirements). This mode operates on symmetrical frequency bands and is suitable for wireless communication systems that provide each user with a single wireless frequency channel.

[0050] Time Division Duplexing (TDD) refers to the separation of receive and transmit channels (or uplink and downlink) in mobile communication systems. Reception and transmission occur in different time slots on the same frequency channel, i.e., the carrier, and are separated by a guarantee time.

[0051] Automatic Channel Selectivity (ACS) refers to the management of terminal equipment (CPE) in the TR-069 protocol network architecture. The interface between ACS and CPE is a southbound interface, and the interface between ACS and the management system is a northbound interface.

[0052] Customer Premise Equipment (CPE) refers to terminal equipment such as telephones, set-top boxes, and routers.

[0053] The specific application scenarios for this application are as follows:

[0054] Figure 1 This is a schematic diagram of the internal system structure of the CPE device provided in an embodiment of this application. Figure 1 As shown, the most basic 5G CPE device physically and logically includes a CPU processing center, supporting the CPU to run embedded system DDR and eMMC chips, where DDR is the memory module and eMMC is the system's file storage chip; the power module is used to convert the externally input power voltage into various power voltages required by the system to drive the system to operate normally; based on the above three parts of DDR, eMMC, and power module, the system can run and load the network port module, WiFi module, and 5G module; the network port module is used to provide external wired signals and obtain network port power, the 5G module is used to insert a SIM card to connect to the public network and obtain mobile network data; the WiFi module is used to provide wireless Internet access to local devices, with frequencies including 2.4G and 5G; in the whole system, the CPU is responsible for the signal management of the entire 5G module and WiFi module, as well as the internal data interaction communication; the entire 5G CPE can operate within this physical and logical framework, but because it integrates both the 5G module and WiFi module, wireless self-interference problems are inevitable.

[0055] The signal self-interference avoidance method provided in this application aims to solve the above-mentioned technical problems in the prior art.

[0056] Figure 2 This is a schematic diagram illustrating the internal signal self-interference measurement principle of the signal interference measurement system provided in this application embodiment. Figure 2 As shown, to measure the signal interference between the 5G module and the WiFi module, the CPE device is first placed in a shielded box, with the 5G module signal and WiFi signal output from the device in two separate paths, separated by signal isolation. After the module antenna signal is output, it is split into two paths by a signal power divider. One path is connected to the signal measurement device, and the other path is connected to the upper end of an adjustable attenuator. The power divider is a device that divides one input signal into two or more equally powerful output paths. The adjustable attenuator is a device that simulates the attenuation amplitude of the antenna. After the WiFi antenna signal is output, it is connected to the lower stage of the front-end input stage of a combiner. The upper stage of the front-end input stage of the combiner is connected to the lower end of the adjustable attenuator, and the rear-end output stage of the combiner is connected to the measurement device. The combiner is a device that combines input signals from multiple frequency bands into a single output. By setting up and combining the above signal self-interference measurement environment equipment, the self-interference data of the 5G module signal and WiFi signal of the CPE device can be measured, and the spectrum information of the 5G module and WiFi signals can be analyzed using the signal measurement device.

[0057] Figure 3 This is a schematic diagram of frequency band overlap due to signal self-interference provided in an embodiment of this application. (See diagram below.) Figure 3As shown, 5G NR refers to the entire frequency range of 5G, 5G NR mmWave refers to the millimeter-wave frequency range of 5G, and 5G-M refers to the current main frequency band of 5G, namely Sub-6GHz (the frequency band before 6G). The LTE frequency band includes 4G, GSM, and 3G in the range of 0 to 2.6GHz, while the WiFi 2.4GHz band is in the range of 2.40GHz to 2.50GHz, and the WiFi 5G band is in the range of 5.0GHz to 6.0GHz. From this frequency band overlap diagram, it can be seen that the center frequency point of the module's LTE frequency band is... There is some overlap, and the center frequency of the module's 5G band overlaps with the center frequencies of both the 2.4G and 5G bands of WiFi. Furthermore, the frequency of harmonics is calculated as N * the dominant frequency, where N is the harmonic order. The third harmonic of 2.4G covers the range from 4.8G to 7.2G. In short, the second and third harmonics of the 2.0G to 2.5G frequency range of the module's 5G band can interfere with the entire frequency domain of the WiFi 5G band. The specific degree of interference depends on how close the dominant harmonic frequency is to the dominant 5G frequency of WiFi.

[0058] The following provides supplementary explanations regarding the module's 5G band, LTE band, and WiFi 2.4G and 5G bands.

[0059] Regarding the 5G frequency band portion of the module, taking 5G wavebands as an example, there are currently two main technical directions: Sub-6GHz and high-frequency millimeter wave (mmWave). Sub-6GHz utilizes bandwidth resources below 6GHz to develop 5G, and this frequency band has been confirmed for the initial deployment of 5G in China. It is evident that the optimal Sub-6GHz solution for terminals can meet the needs of 5G commercialization in the domestic market at the fastest speed. Millimeter waves are electromagnetic waves with wavelengths between 1 and 10 millimeters, corresponding to frequency bands of 24GHz to 100GHz. In 4G, different frequency bands were allocated for FDD and TDD, and the same applies to 5G NR, which also introduces new SDL (supplementary downlink) and SUL (supplementary uplink) frequency bands.

[0060] 5G NR frequency band numbers begin with "n", unlike LTE frequency band numbers which begin with "B". Currently, the 3GPP-designated 5G NR frequency bands are as follows; please refer to the 3GPP specification version 15.0.0 TS 38.104 released in December 2017 for details:

[0061] Within the FR1 (Sub-6GHz) range, the frequency band table is shown in Table 1 below:

[0062] Table 1 5G NR Frequency Bands

[0063]

[0064] Regarding LTE frequency band allocation, the TDD bands used for 4G in China include B38, B39, B40, and B41, with B38 being a subset of B41. The FDD-LTE frequency band allocation is as follows:

[0065] Operator 1: Band 3 has a total of 30MHz (uplink 1765-1780MHz / downlink 1860-1875MHz), and Band 1 has a total of 40MHz (uplink 1920-1940MHz / downlink 2110-2130MHz).

[0066] Operator 2: Band 3 has a total of 20MHz (uplink 1755-1765 / downlink 1850-1860) uplink 1745-1765MHz / downlink 1840-1860MHz), and Band 1 has a total of 50MHz (uplink 1955–1980MHz / downlink 2145–2170MHz).

[0067] Of these, the 2.4GHz band for WiFi actually has 14 channels, but channel 14 is generally not used. Table 2 only lists the center frequencies of the channels. The effective bandwidth of each channel is 20MHz, plus a 2MHz mandatory isolation band; that is, for channel 1 with a center frequency of 2412MHz, its frequency range is 2401~2423MHz.

[0068] Table 2 WiFi 2.4G Channel Configuration Table

[0069] 1 20 2412 2 20 2417 3 20 2422 4 20 2427 5 20 2432 6 20 2437 7 20 2442 8 20 2447 9 20 2452 10 20 2457 11 20 2462 12 20 2467 13 20 2472 14 20 2484

[0070] For a WiFi bandwidth of 40Mbps, the channel consists of two 20Mbps channels; it is divided into one main channel and one auxiliary channel, as shown in Table 3 below:

[0071] Table 3 WiFi 2.4G 40M Bandwidth Channel Table

[0072]

[0073]

[0074] For the 5G frequency band of WiFi, some frequency point information is shown in Table 4 below. For other frequency points, please refer to relevant existing technical data.

[0075] Table 4 WiFi 5G Channel Configuration Table

[0076] 7 10 5035 8 20 5040 9 10 5045 11 10 5055 12 20 5060 16 20 5080 34 NA 5170 36 20 5180 38 40 5190 40 20 5200 42 80 5210 ●●● ●●● ●●● ●●● ●●● ●●● 196 20 4980

[0077] Due to hardware differences, the interference data required for each series of devices varies. Interference is mainly divided into harmonic interference and primary frequency interference. Primary frequency interference can be obtained by comparing the proximity of frequency points, while harmonic interference frequency bands can be calculated using formulas. Based on the channel overlap data and the frequency band and channel analysis in Tables 1 to 4, combined with the actual interference level obtained from the self-interference test environment, the actual interference data of the 5G module inside the CPE to WiFi can be tested. Furthermore, the frequency bands for 5G modules and WiFi vary from country to country. This country information needs to be entered and determined according to the 3GPP V15.0.0 version TS 38.104 specification; frequency bands not supported by the corresponding country need to be deducted from the interference table to obtain the standard frequency band channel configuration table.

[0078] The technical solution of this application and how the technical solution of this application solves the above-mentioned technical problems are described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of this application will now be described with reference to the accompanying drawings.

[0079] Figure 4 Schematic diagram of the signal self-interference avoidance method provided in the embodiments of this application Figure 1 .like Figure 4 As shown, the method includes:

[0080] S401. Obtain the LTE frequency band currently operating of the 5G module, and obtain the interfered WiFi frequency band corresponding to the LTE frequency band according to the frequency band interference table. The frequency band interference table stores the correspondence between LTE frequency bands and interfered WiFi frequency bands.

[0081] Specifically, the 5G module reports its operating information at fixed intervals, such as the cell type, whether the internet access mode is LTE or 5G NR, the channel, and the band. The CPU parses this information using corresponding low-level interface functions. When it obtains the LTE frequency band of the current 5G module's operating state, it acquires the module's frequency band. Then, based on a pre-calculated frequency band interference table, it finds the corresponding WiFi frequency band, which is the interfered WiFi frequency band. The pre-calculated frequency band interference table is obtained by multiplying the module's frequency band by its harmonic order to get the harmonic frequency, and then mapping the harmonic frequency to nearby WiFi frequency bands.

[0082] S402. Obtain the channel configuration table of the standard frequency band to which the interfered WiFi frequency band belongs, wherein the channel configuration table stores the correspondence between channels and frequency bands;

[0083] Specifically, the channel configuration table stores the correspondence between channels and 2.4G or 5G frequency bands. Furthermore, the frequency band corresponding to a certain channel is a range. For example, a certain channel in the channel configuration table stores a center frequency point and its bandwidth, where the bandwidth is the effective width of the channel.

[0084] S403. Based on the current operating channel of the WiFi module, the interfered WiFi frequency band, and the channel configuration table, determine whether the current operating channel is an interfered WiFi channel;

[0085] Specifically, based on the interfered WiFi frequency band obtained in the previous step, a search is performed in the pre-stored channel configuration table to find the corresponding frequency band range. The channel corresponding to this frequency band range is the interfered WiFi channel. The current operating channel of the WiFi module is obtained, and it is determined whether the current operating channel of the WiFi module is consistent with the interfered WiFi channel. If they are consistent, it means that the current operating channel is being interfered with and needs to be avoided. If they are inconsistent, it means that the current operating channel is not on the interfered channel and can be used normally.

[0086] S404. If the current working channel of the WiFi module is an interfered WiFi channel, then a channel switching operation is performed.

[0087] Specifically, after confirming that the current operating channel of the WiFi module is an interfered WiFi channel, signal interference is avoided by switching channels. First, the interfered WiFi channels are removed from the channel configuration table, and the remaining channels can be used as optional channels to be switched. The WiFi module has an automatic selection function, which selects one of many channels based on a preset channel selection strategy. Since there are many related products in the prior art, this automatic selection function is not the main inventive point of this application, so it will not be described in detail here. The specific selection method and basis can be referred to the description in the prior art.

[0088] The method provided in this embodiment obtains the LTE frequency band currently operating on the 5G module and the corresponding interfered WiFi frequency band according to a frequency band interference table, which stores the correspondence between LTE frequency bands and interfered WiFi frequency bands. It then obtains a channel configuration table for the standard frequency band to which the interfered WiFi frequency band belongs, which stores the correspondence between channels and frequency bands. Based on the current operating channel of the WiFi module, the interfered WiFi frequency band, and the channel configuration table, it determines whether the current operating channel is an interfered WiFi channel. If the current operating channel of the WiFi module is an interfered WiFi channel, a channel switching operation is performed to ensure that the wireless signals of the 5G module and WiFi are always free from interference. By obtaining the current operating channel information and using the frequency band interference table, the channel configuration table is updated and a new operating channel is reselected. This processing method is easy to implement, requires no replacement of existing wireless equipment, reduces configuration costs, and utilizes spectrum analysis to eliminate hidden harmonic interference in self-interference, thus improving the self-interference processing of the device.

[0089] The signal self-interference avoidance method of this application will be described in detail below with reference to a specific embodiment.

[0090] Figure 5 Schematic diagram of the signal self-interference avoidance method provided in the embodiments of this application Figure 2 .like Figure 5 As shown, the method includes:

[0091] S501. Obtain actual interference data of 5G module to WiFi module based on signal interference measurement system;

[0092] Specifically, using Figure 2 The signal interference measurement system based on the principle shown measures actual interference data for CPE equipment.

[0093] S502. Obtain the frequency band interference table based on the frequency bands supported by the preset area and the actual interference data;

[0094] Specifically, based on the different operator classifications, Tables 1-4, and the actual interference data measured in the previous step, the frequency band interference table can be obtained as shown in Table 5 below. The harmonic frequency can be obtained by multiplying the module frequency band and the harmonic order. Then, by matching the harmonic frequency to the nearby WiFi frequency band, the interfered WiFi frequency band can be found.

[0095] Table 5 Frequency Band Interference Table

[0096] B1 1922.5 3 5767.5 5765 B3 1733.3 3 5199.9 5200 B5 826.5 3 2479.5 2472 B20 834.5 3 2503 2472 ●●● ●●● ●●● ●●● ●●● B41 2590 2 5180 5180

[0097] S503. Obtain the LTE frequency band currently operating of the 5G module, and obtain the interfered WiFi frequency band corresponding to the LTE frequency band according to the frequency band interference table. The frequency band interference table stores the correspondence between LTE frequency bands and interfered WiFi frequency bands.

[0098] Specifically, the 5G module reports its operating information at fixed intervals, such as the cell, whether the internet access mode is LTE or 5G NR, the channel, and the band. The CPU parses the relevant information through the corresponding underlying interface function. When it obtains the LTE frequency band of the current 5G module's operating status, that is, the module's frequency band is known, it can find the WiFi frequency band by referring to the frequency band interference table obtained in S502. This WiFi frequency band is the WiFi frequency band that is being interfered with.

[0099] S504. Obtain the channel configuration table of the standard frequency band to which the interfered WiFi frequency band belongs. The channel configuration table stores the correspondence between channels and frequency bands. The standard frequency band is either the 2.4G frequency band or the 5G frequency band.

[0100] Specifically, based on the interfered WiFi frequency band, the channel corresponding to the interfered WiFi frequency band is searched in the channel configuration table of the existing 2.4G or 5G frequency bands.

[0101] S505. Obtain the target channel corresponding to the interfered WiFi frequency band from the channel configuration table;

[0102] Specifically, the channel found in the channel configuration table based on the interfered WiFi frequency band is the target channel that needs to be avoided.

[0103] S506. Determine whether the current working channel and the target channel are consistent. If yes, proceed to S507. If no, do not process.

[0104] S507. Determine that the current working channel is an interfered WiFi channel; remove the target channel from the channel configuration table; select a new channel from the remaining channels in the channel configuration table based on the channel selection strategy;

[0105] Specifically, after finding the target channel, the first step is to determine whether the current working channel overlaps with the target channel. If they overlap, it means that the 5G module frequency band corresponding to the current working channel will interfere with the WiFi frequency band. Therefore, this situation can be avoided by simply removing the interfering channel. Thus, the configuration information corresponding to the target channel needs to be deleted from the channel configuration table. Then, based on the WiFi's preset channel selection strategy, the remaining channels in the channel configuration table are selected.

[0106] S508. Turn on the channel switching switch corresponding to the standard frequency band, and determine whether the channel switching switch is turned on. If yes, proceed to S509; otherwise, do not perform any processing. The channel switching switch is used to switch the WiFi module from the current channel to the new channel.

[0107] Specifically, the WiFi module has a channel switching switch. When the channel switching switch is turned on, it means that the channel switching operation can be performed. Therefore, after obtaining the latest channel configuration table, the on / off status of the channel switching switch must first be determined. If it is turned on, it means that the current working channel is being interfered with and the next channel switching operation needs to be performed. If it is not turned on, it means that there is no interference and no action is taken.

[0108] S509. Determine whether the optimized channel enable switch is turned on. If yes, proceed to S510; otherwise, proceed to S511. The optimized channel enable switch is used by the WiFi module to select a new channel after it is turned on.

[0109] S510. Switch the WiFi module from the current channel to the new channel;

[0110] Specifically, since there are many channels to be switched in the channel configuration table, the WiFi module also has an optimized channel enable switch to help the module automatically select the best unoccupied channel. After the channel switching switch is turned on, it indicates that a channel switch needs to be performed. Therefore, it is also necessary to determine whether the optimized channel enable switch is turned on. The channel switching operation can only be performed when it is turned on.

[0111] S511. Determine whether the WiFi module has a connected device. If yes, proceed to S512; otherwise, proceed to S510.

[0112] S512. When the attached device is disconnected from the WiFi module, a channel switching operation is performed.

[0113] Specifically, when the channel optimization enable switch is not turned on, it is first necessary to determine whether there is a downstream device connected to the current working channel, that is, whether a terminal is using the current working channel. If so, in order to avoid the terminal being accidentally disconnected due to channel switching during use, the channel switching operation is not performed until the downstream device is removed from the current working channel of the WiFi module, that is, when there is no downstream device, the channel switching operation is performed.

[0114] The method provided in this embodiment obtains actual interference data of a 5G module to a WiFi module based on a signal interference measurement system; obtains a frequency band interference table based on the frequency bands supported by a preset area and the actual interference data; obtains the LTE frequency band currently operating on the 5G module, and obtains the corresponding interfered WiFi frequency band based on the frequency band interference table, wherein the frequency band interference table stores the correspondence between LTE frequency bands and interfered WiFi frequency bands; obtains a channel configuration table of the standard frequency band to which the interfered WiFi frequency band belongs, wherein the channel configuration table stores the correspondence between channels and frequency bands, and the standard frequency band is either a 2.4G frequency band or a 5G frequency band; obtains the target channel corresponding to the interfered WiFi frequency band from the channel configuration table; determines whether the current operating channel and the target channel are consistent; if yes, proceed; if no, do not process; determines that the current operating channel is the interfered WiFi channel; removes the target channel from the channel configuration table; and in the remaining... Based on a channel selection strategy, a new channel is selected; the channel switching switch corresponding to the standard frequency band is turned on, and it is determined whether the channel switching switch is turned on. If it is, the process is executed; otherwise, no action is taken. The channel switching switch is used to switch the WiFi module from the current channel to the new channel. It is also determined whether the optimized channel enable switch is turned on. If it is, the process is executed; otherwise, the process is taken. The optimized channel enable switch, when turned on, is used by the WiFi module to select a new channel; the WiFi module is switched from the current channel to the new channel; it is determined whether the WiFi module has a downstream device. If it is, the process is executed; otherwise, a channel switching operation is performed. This method of performing channel switching operation when the downstream device is disconnected from the WiFi module achieves harmonious coexistence of 5G module signals and WiFi signals, avoids signal self-interference channels, ensures the overall high-speed communication capability of the system, avoids unexpected disconnection of the terminal device in use during the channel self-switching process, and improves the stability of communication use.

[0115] In this embodiment of the invention, electronic devices or main control devices can be divided into functional modules according to the above method examples. For example, each function can be divided into its own functional modules, or two or more functions can be integrated into one processing unit. The integrated unit can be implemented in hardware or as a software functional module. It should be noted that the module division in this embodiment of the invention is illustrative and only represents one logical functional division; other division methods may be used in actual implementation.

[0116] Figure 6 This is a schematic diagram of the signal self-interference avoidance device provided in this application. Figure 6 As shown, the device 60 includes:

[0117] The first acquisition module 601 is used to acquire the LTE frequency band currently operating of the 6G module, and to acquire the interfered WiFi frequency band corresponding to the LTE frequency band according to the frequency band interference table. The frequency band interference table stores the correspondence between LTE frequency bands and interfered WiFi frequency bands.

[0118] Specifically, the first acquisition module 601 is used to: acquire the target channel corresponding to the interfered WiFi frequency band from the channel configuration table; determine whether the current working channel and the target channel are consistent; if they are consistent, determine that the current working channel is the interfered WiFi channel.

[0119] The second acquisition module 602 is used to acquire the channel configuration table of the standard frequency band to which the interfered WiFi frequency band belongs, and the channel configuration table stores the correspondence between channels and frequency bands;

[0120] Specifically, the second acquisition module 602 is used to: the standard frequency band is the 2.4G frequency band or the 6G frequency band.

[0121] The judgment module 603 is used to determine whether the current working channel is an interfered WiFi channel based on the current working channel of the WiFi module, the interfered WiFi frequency band, and the channel configuration table;

[0122] Specifically, the judgment module 603 is used to: obtain actual interference data of the 6G module to the WiFi module based on the signal interference measurement system; and obtain the frequency band interference table according to the frequency band supported by the preset area and the actual interference data.

[0123] The processing module 604 is used to perform a channel switching operation if the current working channel of the WiFi module is an interfered WiFi channel.

[0124] Specifically, the processing module 604 is configured to: remove the target channel from the channel configuration table; select a new channel from the remaining channels in the channel configuration table based on a channel selection strategy; turn on the channel switching switch corresponding to the standard frequency band, wherein the channel switching switch is used to switch the WiFi module from the current channel to the new channel; after determining that the channel switching switch is turned on, determine whether the optimized channel enable switch is turned on, wherein the optimized channel enable switch is used for the WiFi module to select a new channel after being turned on; if the optimized channel enable switch is turned off, determine whether the WiFi module has a downstream device; if a downstream device exists, perform a channel switching operation when the downstream device is disconnected from the WiFi module; and switch the WiFi module from the current channel to the new channel.

[0125] The signal self-interference avoidance device provided in this embodiment can execute the signal self-interference avoidance method of the above embodiment. Its implementation principle and technical effect are similar, and will not be described again in this embodiment.

[0126] In the specific implementation of the aforementioned signal self-interference avoidance device, each module can be implemented as a processor. The processor can execute computer execution instructions stored in the memory, so that the processor executes the aforementioned signal self-interference avoidance method.

[0127] Figure 7 A schematic diagram of the structure of the electronic device provided in this application. Figure 7 As shown, the electronic device 70 includes at least one processor 701 and a memory 702. The electronic device 70 also includes a communication component 703. The processor 701, memory 702, and communication component 703 are connected via a bus 704.

[0128] In the specific implementation process, at least one processor 701 executes the computer execution instructions stored in the memory 702, causing at least one processor 701 to execute the signal self-interference avoidance method executed on the electronic device side as described above.

[0129] The specific implementation process of processor 701 can be found in the above method embodiments, and its implementation principle and technical effect are similar. It will not be repeated here.

[0130] In the above embodiments, it should be understood that the processor can be a Central Processing Unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), etc. The general-purpose processor can be a microprocessor or any conventional processor. The steps of the method disclosed in this invention can be directly implemented by a hardware processor, or implemented by a combination of hardware and software modules within the processor.

[0131] The memory may include high-speed RAM, and may also include non-volatile storage (NVM), such as at least one disk storage.

[0132] The bus can be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, or an Extended Industry Standard Architecture (EISA) bus, etc. Buses can be categorized as address buses, data buses, control buses, etc. For ease of illustration, the buses shown in the accompanying drawings are not limited to a single bus or a single type of bus.

[0133] The above description of the functions implemented by electronic devices and main control devices has introduced the solutions provided by the embodiments of the present invention. It is understood that, in order to implement the above functions, the electronic device or main control device includes hardware structures and / or software modules corresponding to the execution of each function. By combining the units and algorithm steps of the various examples described in the embodiments of the present invention, the embodiments of the present invention can be implemented in hardware or a combination of hardware and computer software. Whether a function is executed by hardware or by computer software driving hardware depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the technical solutions of the embodiments of the present invention.

[0134] This application also provides a computer-readable storage medium storing computer-executable instructions, which, when executed by a processor, implement the above-mentioned signal self-interference avoidance method.

[0135] The aforementioned computer-readable storage medium can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic storage, flash memory, magnetic disk, or optical disk. The readable storage medium can be any available medium accessible to a general-purpose or special-purpose computer.

[0136] An exemplary readable storage medium is coupled to a processor, enabling the processor to read information from and write information to the readable storage medium. Of course, the readable storage medium can also be a component of the processor. The processor and the readable storage medium can reside in an Application Specific Integrated Circuit (ASIC). Alternatively, the processor and the readable storage medium can exist as discrete components in an electronic device or a host device.

[0137] Those skilled in the art will understand that all or part of the steps of the above-described method embodiments can be implemented by hardware related to program instructions. The aforementioned program can be stored in a computer-readable storage medium. When executed, the program performs the steps of the above-described method embodiments; and the aforementioned storage medium includes various media capable of storing program code, such as ROM, RAM, magnetic disks, or optical disks.

[0138] 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.

Claims

1. A signal self-interference avoidance method, characterized in that, Applied to a CPE device, the CPE device including a 5G module and a WiFi module, the method includes: Based on the signal interference measurement system, actual interference data of 5G module to WiFi module is obtained. According to the frequency band supported by the preset area and the actual interference data, a frequency band interference table is obtained. The frequency band interference table is obtained by multiplying the module frequency band by the harmonic order to obtain the harmonic frequency, and then mapping the harmonic frequency to the nearby WiFi frequency band. The frequency band interference table stores the correspondence between LTE frequency band and the interfered WiFi frequency band. Obtain the LTE frequency band currently operating of the 5G module, and obtain the corresponding interfered WiFi frequency band according to the frequency band interference table; Obtain the channel configuration table of the standard frequency band to which the interfered WiFi frequency band belongs, wherein the channel configuration table stores the correspondence between channels and frequency bands; Based on the current operating channel of the WiFi module, the interfered WiFi frequency band, and the channel configuration table, determine whether the current operating channel is an interfered WiFi channel; If the current operating channel of the WiFi module is an interfered WiFi channel, then the current operating channel is removed from the channel configuration table. Based on the channel selection strategy, a new channel is selected from the remaining channels in the channel configuration table. When the channel switching switch and the optimized channel enable switch are both turned on, and the WiFi module has no downstream devices, the WiFi module is switched from the current channel to the new channel. Specifically, the channel switching switch is used to switch the WiFi module from the current channel to the new channel, and the optimized channel enable switch, when turned on, is used for the WiFi module to select a new channel.

2. The method according to claim 1, characterized in that, The step of determining whether the current operating channel is an interfered WiFi channel based on the current operating channel of the WiFi module, the interfered WiFi frequency band, and the channel configuration table includes: Obtain the target channel corresponding to the interfered WiFi frequency band from the channel configuration table; Determine whether the current working channel and the target channel are consistent; If they match, then the current working channel is determined to be an interfered WiFi channel.

3. The method according to claim 2, characterized in that, Before switching the WiFi module from the current channel to the new channel, the method further includes: Turn on the channel switching switch corresponding to the standard frequency band. After confirming that the channel switching switch is turned on, determine whether the optimized channel enable switch is turned on.

4. The method according to claim 3, characterized in that, If the optimized channel enable switch is off, the method further includes: Determine whether the WiFi module has any connected devices; If a downstream device exists, a channel switching operation is performed when the downstream device detaches from the WiFi module.

5. The method according to claim 1, characterized in that, The standard frequency band is either the 2.4 GHz band or the 5 GHz band.

6. A signal self-interference avoidance device, characterized in that, include: The judgment module is used to obtain actual interference data of the 5G module to the WiFi module based on the signal interference measurement system, and to obtain a frequency band interference table according to the frequency bands supported by the preset area and the actual interference data. The frequency band interference table is obtained by multiplying the module frequency band by the harmonic order to obtain the harmonic frequency, and then mapping the harmonic frequency to the nearby WiFi frequency band. The frequency band interference table stores the correspondence between LTE frequency bands and the interfered WiFi frequency bands. The first acquisition module is used to acquire the LTE frequency band currently operating of the 5G module, and to acquire the interfered WiFi frequency band corresponding to the LTE frequency band according to the frequency band interference table. The second acquisition module is used to acquire the channel configuration table of the standard frequency band to which the interfered WiFi frequency band belongs, and the channel configuration table stores the correspondence between channels and frequency bands; The judgment module is further configured to determine whether the current working channel is an interfered WiFi channel based on the current working channel of the WiFi module, the interfered WiFi frequency band, and the channel configuration table; The processing module is configured to, if the current operating channel of the WiFi module is an interfered WiFi channel, remove the current operating channel from the channel configuration table, select a new channel from the remaining channels in the channel configuration table based on a channel selection strategy, and switch the WiFi module from the current channel to the new channel when the channel switching switch and the optimized channel enable switch are turned on and the WiFi module has no downstream devices; wherein, the channel switching switch is used to switch the WiFi module from the current channel to the new channel; and the optimized channel enable switch, when turned on, is used for the WiFi module to select a new channel.

7. An electronic device, characterized in that, include: A processor, and a memory communicatively connected to the processor; The memory stores computer-executed instructions; The processor executes computer execution instructions stored in the memory to implement the method as described in any one of claims 1 to 5.

8. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer-executable instructions, which, when executed by a processor, are used to implement the method as described in any one of claims 1 to 5.

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