LTE B40 and Wi-Fi coexistence method in CPE

Abstract

The invention provides an LTE B40 and Wi-Fi coexistence method in CPE, and relates to the technical field of wireless communication, and the method comprises the steps: carrying out the real-time signal monitoring of an LTE B40 antenna and a Wi-Fi antenna in the CPE; when the LTE B40 antenna does not stay in the network, switching a radio frequency switch in the CPE to a first Wi-Fi filter, and recovering the full communication frequency band of the Wi-Fi antenna; when the LTE B40 antenna stays in a network, a radio frequency switch in the CPE is switched to a second Wi-Fi filter, and then the sensitivity suppression degree of the LTE B40 antenna to a Wi-Fi antenna receiving link is determined according to the monitored LTE B40 antenna signal information and Wi-Fi antenna signal information; the transmitting power of the Wi-Fi antenna is regulated and controlled according to the sensitivity suppression degree, then the transmitting power of the LTE B40 antenna is regulated and controlled based on the access frequency band of the Wi-Fi antenna, coexistence of the LTE B40 antenna and the Wi-Fi antenna in the CPE equipment is realized, the receiving sensitivity of the Wi-Fi antenna is not influenced when the CPE equipment stays at the frequency band of the LTE B40 antenna, and the internet surfing experience of a user is not influenced.

Description

Technical Field

[0001] The present application relates to the field of wireless communication technology, and more specifically, to a method for coexistence of LTE B40 and Wi-Fi in a CPE. Background Art

[0002] In CPE (Customer Premises Equipment), the LTE B40 and Wi-Fi coexistence method aims to reduce interference in the overlapping frequency band area by dynamically adjusting the transmit power of the LTE B40 antenna and the Wi-Fi antenna. In the specific implementation process, real-time signal monitoring technology is used to detect the strength of the interference signal received by the Wi-Fi antenna, and the transmit power is adjusted according to the presence and strength of the LTE B40 signal to ensure that the two can effectively coexist in adjacent frequency bands.

[0003] There is a coexistence interference problem between the LTE B40 band (2300-2400M) and the Wi-Fi band (2400-2483.5M) in CPE. When B40 is stationed at a high frequency point, the higher output power will affect the receiving sensitivity of Wi-Fi, thereby reducing the throughput of Wi-Fi and affecting the user's Internet experience. However, in order to reduce the impact of B40 on Wi-Fi in the prior art, by increasing the physical distance between B40 and Wi-Fi antennas, the product volume will increase. By controlling the radiation direction of B40 and Wi-Fi antennas, the antenna directivity of B40 and Wi-Fi will be affected, thereby affecting the user's Internet experience. When B40 is stationed, Wi-Fi shields CH1-CH5 channels, but the Wi-Fi filter has limited suppression of B40 high channels, which will still affect the receiving sensitivity of Wi-Fi high channels (CH6-CH13), thereby affecting the user's Internet experience. Therefore, how to ensure that the receiving sensitivity of the Wi-Fi antenna does not affect the user's Internet experience when the CPE is stationed in the LTE B40 antenna frequency band is a difficult problem faced by the industry. Summary of the invention

[0004] The present application provides a method for coexistence of LTE B40 and Wi-Fi in a CPE, which can not affect the receiving sensitivity of the Wi-Fi antenna when the CPE is stationed in the LTE B40 antenna frequency band, thereby not affecting the user's Internet experience.

[0005] The present application provides a method for coexistence of LTE B40 and Wi-Fi in a CPE, the method comprising the following steps:

[0006] Real-time signal monitoring of LTE B40 antennas and Wi-Fi antennas in CPE devices;

[0007] When the LTE B40 antenna is not stationed on the network, the radio frequency switch in the CPE device is switched to the first Wi-Fi filter to restore the full communication frequency band of the Wi-Fi antenna;

[0008] When the LTE B40 antenna is stationed on the network, the radio frequency switch in the CPE device is switched to the second Wi-Fi filter, and then the sensitivity suppression degree of the LTE B40 antenna to the Wi-Fi antenna receiving link is determined according to the monitored Wi-Fi antenna signal information;

[0009] The transmit power of the Wi-Fi antenna is regulated according to the sensitivity suppression degree, and then the transmit power of the LTE B40 antenna is regulated based on the channel frequency band of the Wi-Fi antenna, so as to achieve the coexistence of the LTEB40 antenna and the Wi-Fi antenna in the CPE device.

[0010] In this embodiment, the LTE B40 antenna is a communication antenna with a communication frequency range of 2300 MHz to 2400 MHz.

[0011] In this embodiment, the Wi-Fi antenna is a communication antenna with a communication frequency range of 2400 MHz to 2483.5 MHz.

[0012] In this embodiment, real-time signal monitoring is performed on the LTE B40 antenna and the Wi-Fi antenna in the CPE device according to the power detection circuit in the CPE device.

[0013] In this embodiment, the first Wi-Fi filter is a Wi-Fi filter with a channel frequency band between CH1 and CH13.

[0014] In this embodiment, the second Wi-Fi filter is a Wi-Fi filter with a channel frequency band between CH4 and CH13.

[0015] In this embodiment, the sensitivity suppression degree is an indicator indicating the degree of suppression of the receiving sensitivity of the Wi-Fi antenna receiving link by the LTE B40 antenna.

[0016] In this embodiment, determining the sensitivity suppression degree of the LTE B40 antenna to the Wi-Fi antenna receiving link according to the monitored Wi-Fi antenna signal information specifically includes:

[0017] Get the noise power of the Wi-Fi antenna receiving link;

[0018] Extracting the received power of the Wi-Fi antenna from the monitored Wi-Fi antenna signal information;

[0019] Determine a link quality coefficient of the Wi-Fi antenna receiving link according to the receiving power of the Wi-Fi antenna and the noise power of the Wi-Fi antenna receiving link;

[0020] Determine the interference power caused by the LTE B40 antenna signal based on the monitored Wi-Fi antenna signal information;

[0021] Determine a link suppression factor of the Wi-Fi antenna receiving link according to the noise power of the Wi-Fi antenna receiving link and the interference power caused by the LTE B40 antenna signal;

[0022] The sensitivity suppression degree of the LTE B40 antenna to the Wi-Fi antenna receiving link is determined according to the link quality coefficient and the link suppression factor.

[0023] In this embodiment, regulating the transmit power of the Wi-Fi antenna according to the sensitivity suppression degree specifically includes:

[0024] Obtaining the current transmit power of the Wi-Fi antenna;

[0025] Determine the theoretical extreme value of sensitivity suppression;

[0026] The regulated transmit power of the Wi-Fi antenna is determined according to the sensitivity suppression degree, the sensitivity suppression degree theoretical extreme value, and the current transmit power of the Wi-Fi antenna, thereby completing the regulation of the transmit power of the Wi-Fi antenna.

[0027] In this embodiment, regulating the transmission power of the LTE B40 antenna based on the path frequency band of the Wi-Fi antenna specifically includes:

[0028] When the channel frequency band of the Wi-Fi antenna is between CH6 and CH13, reducing the transmission power of the LTE B40 antenna;

[0029] When the channel frequency band of the Wi-Fi antenna is between CH1 and CH5, the transmission power of the LTE B40 antenna is maintained.

[0030] The technical solution provided by the embodiments disclosed in this application has the following beneficial effects:

[0031] By performing real-time signal monitoring on the LTE B40 antenna and the Wi-Fi antenna in the CPE device; when the LTE B40 antenna is not on the network, switching the RF switch in the CPE device to the first Wi-Fi filter to restore the full communication frequency band of the Wi-Fi antenna; when the LTE B40 antenna is on the network, switching the RF switch in the CPE device to the second Wi-Fi filter, and then determining the sensitivity suppression of the LTE B40 antenna to the Wi-Fi antenna receiving link according to the monitored Wi-Fi antenna signal information; adjusting the transmission power of the Wi-Fi antenna according to the sensitivity suppression, and then adjusting the transmission power of the LTE B40 antenna based on the path frequency band of the Wi-Fi antenna, the coexistence of the LTE B40 antenna and the Wi-Fi antenna in the CPE device is achieved.

[0032] It can be seen that in this application, first, when the LTE B40 antenna is not on the network, the RF switch in the CPE device is switched to the first Wi-Fi filter to restore the full communication frequency band of the Wi-Fi antenna, which can ensure that the Wi-Fi antenna fully utilizes the entire 2.4GHz frequency band without being affected by LTE B40, thereby improving the coverage and data throughput of the Wi-Fi network; then, by switching to the second Wi-Fi filter when the LTE B40 antenna is on the network, the interference of the LTE B40 antenna signal to the Wi-Fi antenna receiving link can be effectively suppressed, and the problems such as in-band noise, intermodulation distortion, and RF leakage interference can be reduced, thereby improving the receiving sensitivity of the Wi-Fi antenna and ensuring the stability and reliability of Wi-Fi communication; finally, by regulating the transmit power of the Wi-Fi antenna according to the sensitivity suppression degree, and further dynamically adjusting the transmit power of the LTE B40 antenna based on the path frequency band of the Wi-Fi antenna, the interference of LTE B40 to the Wi-Fi receiving link can be effectively reduced, and the efficient coexistence of the LTE B40 antenna and the Wi-Fi antenna in the CPE device can be achieved.

[0033] To sum up, the technical solution adopted in this application can not affect the receiving sensitivity of the Wi-Fi antenna when the CPE device is stationed in the LTE B40 antenna frequency band, thereby not affecting the user's Internet experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The drawings described herein are used to provide a further understanding of the embodiments of the present invention, constitute a part of this application, and do not constitute a limitation of the embodiments of the present invention. In the drawings:

[0035] Figure 1 is a flow chart of a method for coexistence of LTE B40 and Wi-Fi in a CPE provided by the present application;

[0036] Figure 2 This is an exemplary flow chart for determining the sensitivity suppression of the LTE B40 antenna to the Wi-Fi antenna receiving link provided by the present application. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical scheme and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the embodiments and drawings. The schematic implementation modes and descriptions of the present invention are only used to explain the present invention and are not intended to limit the present invention. It should be noted that the present invention is already in the actual development and use stage.

[0038] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods. Figure 1 As shown, the figure is an exemplary flow chart of a method for coexistence of LTE B40 and Wi-Fi in a CPE according to this embodiment of the present application, and the method includes the following steps:

[0039] In step S1, real-time signal monitoring is performed on the LTE B40 antenna and the Wi-Fi antenna in the CPE device.

[0040] It should be noted that in this application, the LTE B40 antenna is a communication antenna with a communication frequency range of 2300MHz to 2400MHz, which is mainly used in mobile communication devices (such as smartphones, routers, CPE devices, etc.) or base station devices in 4G LTE networks to achieve efficient wireless signal transmission and reception; the Wi-Fi antenna is a communication antenna with a communication frequency range of 2400MHz to 2483.5MHz, which is used to send and receive Wi-Fi signals. The Wi-Fi antenna is a key component of wireless network equipment (such as routers, smartphones, laptops, Internet of Things devices, etc.) and is responsible for transmitting data between devices.

[0041] In specific implementation, the LTE B40 antenna and Wi-Fi antenna in the CPE device can be monitored for real-time signals based on the power detection circuit in the CPE device. The power detection circuit can evaluate the working status of the antenna by detecting the power of the input signal. The power detection circuit will be integrated in the RF link of the CPE device to collect signals in a specific frequency band.

[0042] In step S2, when the LTE B40 antenna is not stationed on the network, the radio frequency switch in the CPE device is switched to the first Wi-Fi filter to restore the full communication frequency band of the Wi-Fi antenna.

[0043] It should be noted that, in the present application, the first Wi-Fi filter is a Wi-Fi filter with a channel frequency band between CH1 and CH13; the first Wi-Fi filter is a standard filter with limited suppression of high-frequency points of the LTE B40 antenna and is used in normal working mode.

[0044] In this example, the RF switch in the CPE device is switched to the first Wi-Fi filter to restore the full communication frequency band of the Wi-Fi antenna. In specific implementation, first, the power detection circuit in the CPE device monitors the status of the LTE B40 antenna in real time. When the LTE B40 antenna is not stationed on the network, it means that the LTE B40 antenna is not communicating in the currently used frequency band, or is in an idle state. In this case, the LTE B40 antenna will not affect the operation of the Wi-Fi antenna. Then, the RF switch in the CPE device can be switched to the first Wi-Fi filter, and the Wi-Fi antenna restores the full frequency band (CH1-CH13) to ensure the maximum throughput of Wi-Fi. At this time, the Wi-Fi antenna will not be interfered by the LTE B40 antenna, and the receiving sensitivity of the Wi-Fi antenna is guaranteed. The user can normally experience the high throughput and stable connection of the Wi-Fi network.

[0045] It should be noted that when the LTE B40 antenna is not in use, switching the RF switch in the CPE device to the first Wi-Fi filter and restoring the full communication band of the Wi-Fi antenna can ensure that the Wi-Fi antenna can fully utilize the entire 2.4GHz band without being affected by LTE B40, thereby improving the coverage and data throughput of the Wi-Fi network. The advantage of doing this is that when the LTE B40 antenna is not enabled, unnecessary frequency band restrictions are avoided, the Wi-Fi network maintains the maximum available bandwidth, and the communication quality is improved.

[0046] In step S3, when the LTE B40 antenna is stationed on the network, the RF switch in the CPE device is switched to the second Wi-Fi filter, and then the sensitivity suppression of the LTE B40 antenna to the Wi-Fi antenna receiving link is determined according to the monitored Wi-Fi antenna signal information.

[0047] In this embodiment, when the LTE B40 antenna is on-network, the RF switch in the CPE device is switched to the second Wi-Fi filter; it should be noted that in the present application, the second Wi-Fi filter is a Wi-Fi filter with a path frequency band between CH4 and CH13, and the second Wi-Fi filter has a high degree of suppression on the high channel (above 2350MHz) of the LTE B40 antenna, and is used for the Wi-Fi antenna to avoid interference from the LTE B40 antenna; in specific implementation, first, the power detection circuit in the CPE device monitors the state of the LTE B40 antenna in real time. If the LTE B40 antenna is in the on-network state, that is, it is transmitting a signal, the system will identify the signal strength and interference of the LTE B40 antenna frequency band; then, the RF switch of the CPE device will automatically switch to the second Wi-Fi filter. The difference between the second Wi-Fi filter and the first Wi-Fi filter is that it usually limits the path frequency band of the Wi-Fi signal, filters out the spectrum that may be interfered by the LTE B40 antenna frequency band, and usually covers the Wi-Fi frequency band from CH4 to CH13.

[0048] Preferably, in this embodiment, reference Figure 2 As shown, this figure is an exemplary flow chart of determining the sensitivity suppression degree of the LTE B40 antenna to the Wi-Fi antenna receiving link in an embodiment of the present application. In this embodiment, the sensitivity suppression degree of the LTE B40 antenna to the Wi-Fi antenna receiving link is determined according to the monitored Wi-Fi antenna signal information, which can be specifically implemented by the following steps:

[0049] In step S31, the noise power of the Wi-Fi antenna receiving link is obtained;

[0050] In step S32, the received power of the Wi-Fi antenna is extracted from the monitored Wi-Fi antenna signal information;

[0051] In step S33, a link quality coefficient of the Wi-Fi antenna receiving link is determined according to the receiving power of the Wi-Fi antenna and the noise power of the Wi-Fi antenna receiving link;

[0052] In step S34, the interference power caused by the LTE B40 antenna signal is determined based on the monitored Wi-Fi antenna signal information;

[0053] In step S35, a link suppression factor of the Wi-Fi antenna receiving link is determined according to the noise power of the Wi-Fi antenna receiving link and the interference power caused by the LTE B40 antenna signal;

[0054] In step S36, the sensitivity suppression degree of the LTE B40 antenna to the Wi-Fi antenna receiving link is determined according to the link quality coefficient and the link suppression factor.

[0055] In specific implementation, first, the noise level of the Wi-Fi antenna can be monitored by the power detection circuit in the CPE device, so as to obtain the noise power of the Wi-Fi antenna receiving link; then, the received power of the Wi-Fi antenna, that is, the actual received power of the Wi-Fi antenna, can be extracted from the monitored Wi-Fi antenna signal information, which represents the effective receiving strength of the Wi-Fi signal; further, the link quality coefficient of the Wi-Fi antenna receiving link can be determined by the received power of the Wi-Fi antenna and the noise power of the Wi-Fi antenna receiving link, wherein the link quality coefficient is an indicator of the signal quality of the Wi-Fi antenna receiving link. In actual implementation, the ratio of the received power of the Wi-Fi antenna to the noise power of the Wi-Fi antenna receiving link can be used as the link quality coefficient of the Wi-Fi antenna receiving link; finally, the interference power caused by the LTE B40 antenna signal can be determined based on the monitored Wi-Fi antenna signal information. In the CPE device, the operating frequency band of the LTE B40 antenna has partial spectrum overlap with the 2.4 GHz frequency band of the Wi-Fi antenna. Therefore, the LTE The transmission signal of the B40 antenna may interfere with the receiving link of the Wi-Fi antenna. The interference power caused by the LTE B40 antenna signal can be estimated by actually measuring the non-Wi-Fi signal power at the receiving end of the Wi-Fi antenna.

[0056] In addition, in a specific implementation, the link suppression factor of the Wi-Fi antenna receiving link can be determined according to the noise power of the Wi-Fi antenna receiving link and the interference power caused by the LTE B40 antenna signal, wherein the link suppression factor is an indicator of the degree of suppression of the Wi-Fi antenna receiving link by the LTE B40 antenna signal. In actual implementation, the link suppression factor can be determined by the following formula:

[0057]

[0058] Where InS represents the link suppression factor, P noise represents the noise power of the Wi-Fi antenna receiving link, P LTE represents the interference power caused by the LTE B40 antenna signal; then, the sensitivity suppression degree of the LTE B40 antenna to the Wi-Fi antenna receiving link can be determined according to the link quality coefficient and the link suppression factor, wherein the sensitivity suppression degree is an indicator of the degree of suppression of the receiving sensitivity of the Wi-Fi antenna receiving link by the LTE B40 antenna. In actual implementation, the sensitivity suppression degree can be determined according to the following formula:

[0059]

[0060] Among them, CII represents sensitive inhibition, α Wi-Fi InS represents the link quality factor and InS represents the link suppression factor.

[0061] It should be noted that by switching to the second Wi-Fi filter when the LTE B40 antenna is on the network, the interference of the LTE B40 antenna signal on the Wi-Fi antenna receiving link can be effectively suppressed, and problems such as in-band noise, intermodulation distortion, and RF leakage interference can be reduced, thereby improving the receiving sensitivity of the Wi-Fi antenna and ensuring the stability and reliability of Wi-Fi communication.

[0062] In step S4, the transmit power of the Wi-Fi antenna is regulated according to the sensitivity suppression degree, and then the transmit power of the LTE B40 antenna is regulated based on the path frequency band of the Wi-Fi antenna, so as to achieve coexistence of the LTE B40 antenna and the Wi-Fi antenna in the CPE device.

[0063] In this embodiment, the transmit power of the Wi-Fi antenna is regulated according to the sensitivity suppression degree in the following manner:

[0064] Obtaining the current transmit power of the Wi-Fi antenna;

[0065] Determine the theoretical extreme value of sensitivity suppression;

[0066] The regulated transmit power of the Wi-Fi antenna is determined according to the sensitivity suppression degree, the sensitivity suppression degree theoretical extreme value, and the current transmit power of the Wi-Fi antenna, thereby completing the regulation of the transmit power of the Wi-Fi antenna.

[0067] In specific implementation, first, the transmit power of the Wi-Fi antenna can be measured in real time through the power detection circuit to obtain the current transmit power of the Wi-Fi antenna; then, the sensitivity suppression theoretical extreme value can be set through data analysis and historical experiments, and the sensitivity suppression theoretical extreme value is the maximum value of the sensitivity suppression in theoretical calculation; finally, the regulated transmit power of the Wi-Fi antenna can be determined according to the sensitivity suppression, the sensitivity suppression theoretical extreme value and the current transmit power of the Wi-Fi antenna. In actual implementation, the regulated transmit power of the Wi-Fi antenna can be determined by the following formula:

[0068]

[0069] Among them, P Wi-Fi_new Indicates the regulated transmission power of the Wi-Fi antenna, P Wi-Fi_currentIndicates the current transmit power of the Wi-Fi antenna, CII max It represents the theoretical extreme value of sensitivity suppression, and CII represents sensitivity suppression. The transmit power of the Wi-Fi antenna can be regulated by the above method.

[0070] In this embodiment, the transmission power of the LTE B40 antenna is regulated based on the path frequency band of the Wi-Fi antenna in the following manner:

[0071] When the channel frequency band of the Wi-Fi antenna is between CH6 and CH13, reducing the transmission power of the LTE B40 antenna;

[0072] When the channel frequency band of the Wi-Fi antenna is between CH1 and CH5, the transmission power of the LTE B40 antenna is maintained.

[0073] In specific implementation, when the channel frequency band of the Wi-Fi antenna is between CH6 and CH13, the transmit power adjustment mechanism of the LTE B40 antenna is triggered to reduce the transmit power of the LTE B40 antenna and reduce the impact on the Wi-Fi antenna; when the channel frequency band of the Wi-Fi antenna is between CH1 and CH5, the transmit power of the LTE B40 antenna is maintained to ensure the signal quality of the LTE B40 antenna.

[0074] It should be noted that the above-mentioned control method can avoid mutual interference between the Wi-Fi antenna and the LTE B40 antenna, so as to achieve the coexistence of the LTE B40 antenna and the Wi-Fi antenna in the CPE device.

[0075] In addition, it should be noted that by regulating the transmit power of the Wi-Fi antenna according to the sensitivity suppression degree, and further dynamically adjusting the transmit power of the LTE B40 antenna based on the path frequency band of the Wi-Fi antenna, the interference of LTE B40 on the Wi-Fi receiving link can be effectively reduced, and the efficient coexistence of the LTE B40 antenna and the Wi-Fi antenna in the CPE device can be achieved. When the CPE device is stationed in the LTE B40 frequency band, it can dynamically adjust the power allocation to ensure that the receiving sensitivity of the Wi-Fi antenna is not interfered, thereby improving the stability and throughput of Wi-Fi communication. At the same time, when Wi-Fi uses lower frequency channels (CH1~CH5), the high power output of LTE B40 is maintained to ensure that the LTE communication performance is not affected. Through this intelligent power management mechanism, the CPE device can maintain the communication efficiency of LTE B40 while ensuring the quality of the Wi-Fi network, and realize the dynamic optimization and coordinated scheduling of wireless resources.

[0076] It can be seen that in this application, first, when the LTE B40 antenna is not on the network, the RF switch in the CPE device is switched to the first Wi-Fi filter to restore the full communication frequency band of the Wi-Fi antenna, which can ensure that the Wi-Fi antenna fully utilizes the entire 2.4GHz frequency band without being affected by LTE B40, thereby improving the coverage and data throughput of the Wi-Fi network; then, by switching to the second Wi-Fi filter when the LTE B40 antenna is on the network, the interference of the LTE B40 antenna signal to the Wi-Fi antenna receiving link can be effectively suppressed, and the problems such as in-band noise, intermodulation distortion, and RF leakage interference can be reduced, thereby improving the receiving sensitivity of the Wi-Fi antenna and ensuring the stability and reliability of Wi-Fi communication; finally, by regulating the transmit power of the Wi-Fi antenna according to the sensitivity suppression degree, and further dynamically adjusting the transmit power of the LTE B40 antenna based on the path frequency band of the Wi-Fi antenna, the interference of LTE B40 to the Wi-Fi receiving link can be effectively reduced, and the efficient coexistence of the LTE B40 antenna and the Wi-Fi antenna in the CPE device can be achieved.

[0077] To sum up, the technical solution adopted in this application can not affect the receiving sensitivity of the Wi-Fi antenna when the CPE device is stationed in the LTE B40 antenna frequency band, thereby not affecting the user's Internet experience.

[0078] The specific implementation methods described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A method for coexistence of LTE B40 and Wi-Fi in CPE, characterized in that: The method comprises the following steps: Real-time signal monitoring of LTE B40 antennas and Wi-Fi antennas in CPE devices; When the LTE B40 antenna is not stationed on the network, the radio frequency switch in the CPE device is switched to the first Wi-Fi filter to restore the full communication frequency band of the Wi-Fi antenna; When the LTE B40 antenna is stationed on the network, the radio frequency switch in the CPE device is switched to the second Wi-Fi filter, and then the sensitivity suppression degree of the LTE B40 antenna to the Wi-Fi antenna receiving link is determined according to the monitored Wi-Fi antenna signal information; The transmit power of the Wi-Fi antenna is regulated according to the sensitivity suppression degree, and then the transmit power of the LTE B40 antenna is regulated based on the path frequency band of the Wi-Fi antenna, so as to achieve coexistence of the LTE B40 antenna and the Wi-Fi antenna in the CPE device.

2. A method for coexistence of LTE B40 and Wi-Fi in a CPE as claimed in claim 1, characterized in that: The LTE B40 antenna is a communication antenna with a communication frequency range of 2300 MHz to 2400 MHz.

3. The method for coexistence of LTE B40 and Wi-Fi in CPE according to claim 1, characterized in that: The Wi-Fi antenna is a communication antenna with a communication frequency range of 2400 MHz to 2483.5 MHz.

4. The method for coexistence of LTE B40 and Wi-Fi in CPE according to claim 1, characterized in that: Real-time signal monitoring of the LTE B40 antenna and Wi-Fi antenna in the CPE device is performed based on the power detection circuit in the CPE device.

5. The method for coexistence of LTE B40 and Wi-Fi in CPE according to claim 1, characterized in that: The first Wi-Fi filter is a Wi-Fi filter with a channel frequency band between CH1 and CH13.

6. The method for coexistence of LTE B40 and Wi-Fi in CPE according to claim 1, characterized in that: The second Wi-Fi filter is a Wi-Fi filter with a channel frequency band between CH4 and CH13.

7. The method for coexistence of LTE B40 and Wi-Fi in CPE according to claim 1, characterized in that: The sensitivity suppression degree is an indicator indicating the degree of suppression of the receiving sensitivity of the Wi-Fi antenna receiving link by the LTE B40 antenna.

8. The method for coexistence of LTE B40 and Wi-Fi in CPE according to claim 1, characterized in that: Determining the sensitivity suppression degree of the LTE B40 antenna to the Wi-Fi antenna receiving link according to the monitored Wi-Fi antenna signal information specifically includes: Get the noise power of the Wi-Fi antenna receiving link; Extracting the received power of the Wi-Fi antenna from the monitored Wi-Fi antenna signal information; Determine a link quality coefficient of the Wi-Fi antenna receiving link according to the receiving power of the Wi-Fi antenna and the noise power of the Wi-Fi antenna receiving link; Determine the interference power caused by the LTE B40 antenna signal based on the monitored Wi-Fi antenna signal information; Determine a link suppression factor of the Wi-Fi antenna receiving link according to the noise power of the Wi-Fi antenna receiving link and the interference power caused by the LTE B40 antenna signal; The sensitivity suppression degree of the LTE B40 antenna to the Wi-Fi antenna receiving link is determined according to the link quality coefficient and the link suppression factor.

9. The method for coexistence of LTE B40 and Wi-Fi in CPE according to claim 1, characterized in that: The regulating the transmit power of the Wi-Fi antenna according to the sensitivity suppression degree specifically includes: Obtaining the current transmit power of the Wi-Fi antenna; Determine the theoretical extreme value of sensitivity suppression; The regulated transmit power of the Wi-Fi antenna is determined according to the sensitivity suppression degree, the sensitivity suppression degree theoretical extreme value, and the current transmit power of the Wi-Fi antenna, thereby completing the regulation of the transmit power of the Wi-Fi antenna.

10. The method for coexistence of LTE B40 and Wi-Fi in CPE according to claim 1, characterized in that: The control of the transmission power of the LTE B40 antenna based on the path frequency band of the Wi-Fi antenna specifically includes: When the channel frequency band of the Wi-Fi antenna is between CH6 and CH13, reducing the transmission power of the LTE B40 antenna; When the channel frequency band of the Wi-Fi antenna is between CH1 and CH5, the transmission power of the LTE B40 antenna is maintained.

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