A method for coexistence of LTE B40 and Wi-Fi in CPE

Abstract

The application provides a method for coexistence of LTE B40 and Wi-Fi in CPE, relates to the technical field of wireless communication, and performs real-time signal monitoring on an LTE B40 antenna and a Wi-Fi antenna in a CPE device; when the LTE B40 antenna is not camped on a network, a radio frequency switch in the CPE device is switched to a first Wi-Fi filter, and full communication frequency bands of the Wi-Fi antenna are recovered; when the LTE B40 antenna is camped on a network, the radio frequency switch in the CPE device is switched to a second Wi-Fi filter, and then sensitivity suppression of the LTE B40 antenna on a receiving link of the Wi-Fi antenna is determined according to monitored LTE B40 antenna signal information and Wi-Fi antenna signal information; transmission power of the Wi-Fi antenna is regulated according to the sensitivity suppression, and then transmission power of the LTE B40 antenna is regulated based on a passband of the Wi-Fi antenna, so that coexistence of the LTE B40 antenna and the Wi-Fi antenna in the CPE device is realized; the application can not affect receiving sensitivity of the Wi-Fi antenna when the CPE device is camped on a network in the LTE B40 antenna frequency band, so that the user's online experience is not affected.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of wireless communication, and more particularly, to a CPE LTE B40 and Wi-Fi coexistence method. BACKGROUND

[0002] In a CPE (CPE, Customer Premises Equipment) device, the LTE B40 and Wi-Fi coexistence method aims to reduce interference in the frequency band overlap 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 interference signal strength received by the Wi-Fi antenna, and the transmit power is regulated 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 frequency band (2300-2400M) and the Wi-Fi frequency band (2400-2483.5M) in the CPE. When the B40 is networked at a high frequency point, the higher output power will affect the reception sensitivity of the Wi-Fi, thereby reducing the throughput of the Wi-Fi and affecting the user's online 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 be increased. By controlling the radiation direction of B40 and Wi-Fi antennas, the directivity of B40 and Wi-Fi antennas will be affected, thereby affecting the user's online experience. By shielding the CH1-CH5 channel when the Wi-Fi is networked B40, but the suppression of the Wi-Fi filter on the high channel of B40 is limited, which will still affect the reception sensitivity of the Wi-Fi high channel (CH6-CH13), thereby affecting the user's online experience. Therefore, how to network the CPE in the LTE B40 antenna frequency band without affecting the reception sensitivity of the Wi-Fi antenna, so as to not affect the user's online experience is a difficult problem faced by the industry. SUMMARY

[0004] The present application provides a CPE LTE B40 and Wi-Fi coexistence method, which can network the CPE in the LTE B40 antenna frequency band without affecting the reception sensitivity of the Wi-Fi antenna, so as to not affect the user's online experience.

[0005] The present application provides a CPE LTE B40 and Wi-Fi coexistence method, which comprises the following steps:

[0006] Real-time signal monitoring is performed on the LTE B40 antenna and the Wi-Fi antenna in the CPE device;

[0007] switching a radio frequency switch in the CPE device to a first Wi-Fi filter to restore full communication frequency bands of the Wi-Fi antenna when the LTE B40 antenna is not networked;

[0008] switching the radio frequency switch in the CPE device to a second Wi-Fi filter when the LTE B40 antenna is networked, and then determining a sensitivity suppression degree of the LTE B40 antenna to a Wi-Fi antenna receiving link according to monitored Wi-Fi antenna signal information;

[0009] controlling transmission power of the Wi-Fi antenna according to the sensitivity suppression degree, and then controlling transmission power of the LTE B40 antenna based on a passband of the Wi-Fi antenna to realize coexistence of the LTE B40 antenna and the Wi-Fi antenna in the CPE device.

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

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

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

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

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

[0015] In the embodiment, the sensitivity suppression degree is an index indicating a suppression degree of receiving sensitivity of the LTE B40 antenna to the Wi-Fi antenna receiving link.

[0016] In the embodiment, the determination of 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] acquiring noise power of the Wi-Fi antenna receiving link;

[0018] extracting receiving power of the Wi-Fi antenna from the monitored Wi-Fi antenna signal information;

[0019] determining a link quality coefficient of the Wi-Fi antenna receiving link based on the received power of the Wi-Fi antenna and the noise power of the Wi-Fi antenna receiving link;

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

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

[0022] determining a sensitivity suppression degree of the LTE B40 antenna to the Wi-Fi antenna receiving link based on the link quality coefficient and the link suppression factor.

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

[0024] acquiring the current transmission power of the Wi-Fi antenna;

[0025] determining a theoretical extreme value of the sensitivity suppression degree;

[0026] determining the regulated transmission power of the Wi-Fi antenna based on the sensitivity suppression degree, the theoretical extreme value of the sensitivity suppression degree and the current transmission power of the Wi-Fi antenna, and completing the regulation of the transmission power of the Wi-Fi antenna.

[0027] In the embodiment, regulating the transmission power of the LTE B40 antenna based on the passband of the Wi-Fi antenna specifically comprises:

[0028] when the passband of the Wi-Fi antenna is between CH6 and CH13, reducing the transmission power of the LTE B40 antenna;

[0029] when the passband of the Wi-Fi antenna is between CH1 and CH5, maintaining the transmission power of the LTE B40 antenna.

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

[0031] By 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 camped, 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 camped, 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 transmission power of the Wi-Fi antenna is regulated according to the sensitivity suppression degree, and then the transmission power of the LTE B40 antenna is regulated based on the passband of the Wi-Fi antenna, to realize the coexistence of the LTE B40 antenna and the Wi-Fi antenna in the CPE device.

[0032] It can be seen that in the present application, first, when the LTE B40 antenna is not camped, 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, which can ensure that the Wi-Fi antenna fully utilizes the entire 2.4GHz frequency band without being affected by the LTE B40, and improves the coverage range and data throughput of the Wi-Fi network; then, by switching to the second Wi-Fi filter when the LTE B40 antenna is camped, the interference of the LTE B40 antenna signal to the Wi-Fi antenna receiving link can be effectively suppressed, and problems such as in-band noise, intermodulation distortion, radio frequency leakage interference, etc. 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 transmission power of the Wi-Fi antenna according to the sensitivity suppression degree, and further dynamically adjusting the transmission power of the LTE B40 antenna based on the passband of the Wi-Fi antenna, the interference of the LTE B40 to the Wi-Fi receiving link can be effectively reduced, and efficient coexistence of the LTE B40 antenna and the Wi-Fi antenna in the CPE device can be realized.

[0033] In summary, the technical solution adopted in the present application can not affect the receiving sensitivity of the Wi-Fi antenna when the CPE device is camped in the LTE B40 antenna frequency band, so as not to affect the user's online experience. BRIEF DESCRIPTION OF DRAWINGS

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

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

[0036] Figure 2 is an exemplary flowchart of determining the sensitivity of the LTE B40 antenna to the Wi-Fi antenna receiving link according to the present application. DETAILED DESCRIPTION

[0037] In order to make the objects, technical solutions and advantages of the present application clearer, further detailed description will be made to the present application in combination with embodiments and drawings, the exemplary embodiments and their descriptions are only used to explain the present application, and not as a limitation to the present application. It should be noted that the present application has been in the actual research and development stage.

[0038] In order to better understand the above technical solutions, the above technical solutions will be described in detail in combination with the drawings and specific embodiments of the specification, referring to Figure 1 The figure is an exemplary flowchart of a CPE LTE B40 and Wi-Fi coexistence method according to the present embodiment of the present application, 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 the present application, the LTE B40 antenna is a communication antenna with a communication frequency range of 2300MHz to 2400MHz, 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, used to send and receive Wi-Fi signals, and the Wi-Fi antenna is a key component of wireless network devices (such as routers, smartphones, laptops, Internet of Things devices, etc.), responsible for transmitting data between devices.

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

[0042] In step S2, when the LTE B40 antenna is not camped 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 passband between CH1 and CH13; the first Wi-Fi filter is a standard filter, and the high-frequency point suppression degree of the LTE B40 antenna is limited, which is used for normal working mode.

[0044] In the present example, 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; in specific implementation, first, the power detection circuit in the CPE device monitors the state of the LTE B40 antenna in real time, when the LTE B40 antenna is not camped, it indicates 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 radio frequency 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, the receiving sensitivity of the Wi-Fi antenna is guaranteed, and 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 camped, 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, which can ensure that the Wi-Fi antenna fully utilizes the entire 2.4GHz frequency band without being affected by the LTE B40, and improves the coverage range and data throughput of the Wi-Fi network. The advantage of this is that when the LTE B40 antenna is not enabled, unnecessary frequency band limitation is avoided, the maximum available bandwidth of the Wi-Fi network is maintained, and the communication quality is improved.

[0046] In step S3, when the LTE B40 antenna is camped, 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.

[0047] In the embodiment, when the LTE B40 antenna is in the network, the radio frequency 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 passband between CH4 and CH13, and the second Wi-Fi filter has a high rejection rate for the high channel (above 2350 MHz) of the LTE B40 antenna, which is used to avoid the interference of the LTE B40 antenna on the Wi-Fi antenna; in specific implementation, first, the power detection circuit in the CPE device monitors the state of the LTE B40 antenna in real time, and if the LTE B40 antenna is in the network state, that is, it is transmitting signals, the system can identify the signal strength and interference of the LTE B40 antenna frequency band; then, the radio frequency switch of the CPE device is automatically switched to the second Wi-Fi filter, and the difference between the second Wi-Fi filter and the first Wi-Fi filter is that the second Wi-Fi filter usually limits the passband of the Wi-Fi signal and filters out the spectrum that may be interfered by the LTE B40 antenna frequency band, which usually covers the Wi-Fi frequency band of CH4 to CH13.

[0048] Preferably, in the embodiment, referring to Figure 2 The figure is an exemplary flow chart for determining the sensitive rejection rate of the LTE B40 antenna on the Wi-Fi antenna receiving link in the embodiment of the present application, and the sensitive rejection rate of the LTE B40 antenna on the Wi-Fi antenna receiving link is determined according to the monitored Wi-Fi antenna signal information in the embodiment, which can be realized 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, the link quality coefficient of the Wi-Fi antenna receiving link is determined by the received 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, the link rejection 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 link quality coefficient and the link inhibition factor are used to determine the sensitivity inhibition degree of the LTE B40 antenna to the Wi-Fi antenna receiving link.

[0055] In a specific implementation, first, the noise level of the Wi-Fi antenna can be monitored by a power detection circuit in the CPE device to obtain the noise power of the Wi-Fi antenna receiving link; then, the received power of the Wi-Fi antenna, i.e., the actual received power of the Wi-Fi antenna, can be extracted from the monitored Wi-Fi antenna signal information, which represents the effective received 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, where the link quality coefficient is an index representing the signal quality of the Wi-Fi antenna receiving link, and in an 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 taken 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, where in the CPE device, the operating frequency band of the LTE B40 antenna partially overlaps with the 2.4 GHz frequency band of the Wi-Fi antenna, and thus the transmission signal of the LTE B40 antenna can 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 inhibition 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, where the link inhibition factor is an index representing the inhibition degree of the LTE B40 antenna signal to the Wi-Fi antenna receiving link, and in an actual implementation, the link inhibition factor can be determined by the following formula:

[0057]

[0058] where InS represents the link inhibition 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 inhibition 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 inhibition factor, where the sensitivity inhibition degree is an index representing the inhibition degree of the receiving sensitivity of the LTE B40 antenna to the Wi-Fi antenna receiving link, and in an actual implementation, the sensitivity inhibition degree can be determined according to the following formula:

[0059]

[0060] Wherein, CII represents a sensitivity suppression system, a Wi-Fi represents a link quality coefficient, and InS represents a link suppression factor.

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

[0062] In step S4, the transmission power of the Wi-Fi antenna is regulated according to the sensitivity suppression system, and the transmission power of the LTE B40 antenna is regulated based on the passband of the Wi-Fi antenna, thereby realizing the coexistence of the LTE B40 antenna and the Wi-Fi antenna in the CPE device.

[0063] In this embodiment, the regulation of the transmission power of the Wi-Fi antenna according to the sensitivity suppression system can be implemented in the following manner, that is:

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

[0065] Determining a sensitivity suppression system theoretical extreme value;

[0066] According to the sensitivity suppression system, the sensitivity suppression system theoretical extreme value and the current transmission power of the Wi-Fi antenna, the regulated transmission power of the Wi-Fi antenna is determined, and the regulation of the transmission power of the Wi-Fi antenna is completed.

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

[0068]

[0069] Wherein, P Wi-Fi_new represents the regulated transmission power of the Wi-Fi antenna, P Wi-Fi_currentrepresents the current transmit power of the Wi-Fi antenna, CII max represents the theoretical extreme value of the sensitivity suppression system, CII represents the sensitivity suppression system, and the transmit power of the Wi-Fi antenna can be controlled in the above manner.

[0070] In this embodiment, the transmit power of the LTE B40 antenna is controlled based on the passband of the Wi-Fi antenna in the following manner, that is:

[0071] When the passband of the Wi-Fi antenna is between CH6 and CH13, the transmit power of the LTE B40 antenna is reduced.

[0072] When the passband of the Wi-Fi antenna is between CH1 and CH5, the transmit power of the LTE B40 antenna is maintained.

[0073] Specifically, when the passband 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 influence on the Wi-Fi antenna; when the passband 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 control method can avoid mutual interference between the Wi-Fi antenna and the LTE B40 antenna, so as to realize coexistence of the LTE B40 antenna and the Wi-Fi antenna in the CPE device.

[0075] In addition, it should be noted that the transmit power of the Wi-Fi antenna is controlled according to the sensitivity suppression system, and the transmit power of the LTE B40 antenna is dynamically adjusted based on the passband of the Wi-Fi antenna, which can effectively reduce the interference of the LTE B40 on the Wi-Fi receiving link, and realize efficient coexistence of the LTE B40 antenna and the Wi-Fi antenna in the CPE device. When the CPE device is connected to the LTE B40 frequency band, the power distribution can be dynamically adjusted to ensure that the receiving sensitivity of the Wi-Fi antenna is not interfered, thereby improving the stability and throughput of the Wi-Fi communication. At the same time, when the Wi-Fi uses a lower frequency channel (CH1-CH5), the high power output of the 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 the LTE B40 while ensuring the quality of the Wi-Fi network, and realize dynamic optimization and cooperative scheduling of wireless resources.

[0076] Therefore, in the present application, first, when the LTE B40 antenna is not camped, the radio frequency switch in the CPE device is switched to the first Wi-Fi filter, the full communication frequency band of the Wi-Fi antenna is restored, the entire 2.4GHz frequency band can be fully utilized under the condition that the Wi-Fi antenna is not affected by the LTE B40, and the coverage range and data throughput of the Wi-Fi network are improved; then, by switching to the second Wi-Fi filter when the LTE B40 antenna is camped, the interference of the LTE B40 antenna signal to the Wi-Fi antenna receiving link can be effectively suppressed, the problems of in-band noise, intermodulation distortion, radio frequency leakage interference and the like are reduced, thereby improving the receiving sensitivity of the Wi-Fi antenna and ensuring the stability and reliability of the Wi-Fi communication; finally, by regulating the transmitting power of the Wi-Fi antenna according to the sensitivity suppression system, and further dynamically adjusting the transmitting power of the LTE B40 antenna based on the passband of the Wi-Fi antenna, the interference of the LTE B40 to the Wi-Fi receiving link can be effectively reduced, and efficient coexistence of the LTE B40 antenna and the Wi-Fi antenna in the CPE device can be realized.

[0077] In summary, the technical scheme adopted in the present application can not affect the receiving sensitivity of the Wi-Fi antenna when the CPE device is camped in the LTE B40 antenna frequency band, so as not to affect the user's online experience.

[0078] The above specific embodiments further illustrate the purpose, technical scheme and beneficial effects of the present application, and it should be understood that the above description is only a specific embodiment of the present application and is not used to limit the protection scope of the present application, and any modification, equivalent replacement, improvement, etc. within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A method for coexistence of LTE B40 and Wi-Fi in a CPE, characterized in that, The method includes the following steps: Real-time signal monitoring of the LTE B40 antenna and Wi-Fi antenna in the CPE device; When the LTE B40 antenna is not registered with 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 connected to 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 based on the monitored Wi-Fi antenna signal information. The transmit power of the Wi-Fi antenna is adjusted according to the sensitivity suppression, and then the transmit power of the LTE B40 antenna is adjusted according to the path frequency band of the Wi-Fi antenna, so as to realize the coexistence of the LTE B40 antenna and the Wi-Fi antenna in the CPE device; Specifically, determining the sensitivity suppression of the LTE B40 antenna to the Wi-Fi antenna receiving link based on the monitored Wi-Fi antenna signal information includes: Obtain the noise power of the Wi-Fi antenna receiving link; Extract the received power of the Wi-Fi antenna from the monitored Wi-Fi antenna signal information; The link quality coefficient of the Wi-Fi antenna receiving link is determined by the received power of the Wi-Fi antenna and the noise power of the Wi-Fi antenna receiving link. The interference power caused by the LTE B40 antenna signal is determined based on the monitored Wi-Fi antenna signal information. The link suppression factor of the Wi-Fi antenna receiving link is determined based on 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 based on the link quality coefficient and the link suppression factor, wherein the sensitivity suppression degree is an indicator representing the degree of suppression of the receiving sensitivity of the LTE B40 antenna to the Wi-Fi antenna receiving link; Specifically, adjusting the transmit power of the Wi-Fi antenna based on the sensitivity suppression level includes: Obtain the current transmit power of the Wi-Fi antenna; Determine the theoretical extreme value of the sensitivity inhibition. The controlled transmission power of the Wi-Fi antenna is determined based on the sensitivity suppression degree, the theoretical extreme value of the sensitivity suppression degree, and the current transmission power of the Wi-Fi antenna, thereby completing the control of the transmission power of the Wi-Fi antenna.

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

4. A method for coexistence of LTE B40 and Wi-Fi in a CPE as described in 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. A method for coexistence of LTE B40 and Wi-Fi in a CPE as described in claim 1, characterized in that, The first Wi-Fi filter is a Wi-Fi filter with a path frequency band between CH1 and CH13.

6. A method for coexistence of LTE B40 and Wi-Fi in a CPE as described in claim 1, characterized in that, The second Wi-Fi filter is a Wi-Fi filter with a path frequency band between CH4 and CH13.

7. A method for coexistence of LTE B40 and Wi-Fi in a CPE as described in claim 1, characterized in that, The specific methods for adjusting the transmit power of the LTE B40 antenna based on the Wi-Fi antenna's frequency band include: When the Wi-Fi antenna's path frequency band is between CH6 and CH13, reduce the transmit power of the LTE B40 antenna; When the Wi-Fi antenna's frequency band is between CH1 and CH5, the transmit power of the LTE B40 antenna is maintained.

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