Method and device for suppressing interference signal of peripheral equipment and wireless communication equipment

Abstract

The embodiment of the invention discloses a method and device for suppressing an interference signal of peripheral equipment and wireless communication equipment. The method comprises the following steps: detecting the frequency domain and RSSI value information of an interference signal of peripheral equipment; after the interference signal is sent to the signal comparator and is compared with the frequency domain information of the equipment signal and a preset first RSSI threshold range, the bandwidth of the adjustable filter is adjusted according to the frequency domain comparison result of the interference signal and the equipment signal; and controlling a power amplifier to adjust the strength of the output signal of the equipment according to a comparison result between the RSSI value of the interference signal and a preset first RSSI threshold range, so that the strength of the output signal of the equipment reaches preset output power and / or receiving level. Adjacent frequency and spurious signal interference of peripheral equipment can be effectively suppressed, and the performance and quality of signals of the equipment are ensured; and the output power can be adaptively adjusted, so that a better and farther-distance signal coverage effect is achieved on the premise of saving power consumption as much as possible and reducing electromagnetic wave pollution.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of wireless communication technologies, and in particular to a method, apparatus, and wireless communication device for suppressing interference signals from peripheral devices. Background Art

[0002] With the development of wireless communication technology and the increase in wireless products, spectrum resources are becoming increasingly scarce, and communications on the frequency band have become extremely crowded, affecting the performance and quality of wireless communication equipment. On the one hand, the filter is usually full-bandwidth, and all adjacent frequency signals can be transmitted without attenuation, which has a great interference and impact on the performance of this product. For example, Figure 1 The filter bandwidth diagram for a wireless router is shown below. For wireless routers (e.g., ISM 2.4GHz, with a filter bandwidth of 2412MHz-2482MHz), the standing wave S(2,1) bandwidth generally extends from 2.4GHz to 2.5GHz, a bandwidth of 100MHz, with a loss of less than 0.5dB. In this case, both the desired signal and adjacent frequency signals pass through without loss, impacting product performance. Furthermore, existing products often suffer from poor signal amplitude at long distances, rendering communication impossible. Alternatively, despite high power, they lack adaptive power regulation, resulting in unnecessary resource waste and increased radio frequency electromagnetic radiation. Summary of the Invention

[0003] The embodiments of the present application provide a method, apparatus, and wireless communication device for suppressing interference signals from peripheral devices, so as to effectively suppress interference from adjacent frequencies and stray signals from peripheral devices, thereby ensuring the performance and quality of the signal of the device; and can adaptively adjust the output power of the signal to achieve better and longer-distance signal coverage while saving power consumption and reducing electromagnetic wave pollution as much as possible.

[0004] In a first aspect, an embodiment of the present application provides a method for suppressing interference signals from peripheral devices, comprising: Detect interference signals from surrounding devices and obtain frequency domain and RSSI value information of the interference signals, wherein the interference signals include adjacent frequency signals and / or spurious signals; The frequency domain and RSSI value information of the interference signal are respectively sent to the signal comparator for comparison with the frequency domain information of the device signal and the preset first RSSI threshold range. The bandwidth of the adjustable filter is adjusted according to the frequency domain comparison result of the interference signal and the device signal, so that it can pass the device signal but not the interference signal. The power amplifier circuit is controlled to adjust the intensity of the output signal of the device according to the comparison result of the RSSI value of the interference signal and the preset first RSSI threshold range, so that it reaches the preset output power and / or reception level.

[0005] In some possible implementation manners, the method further includes: obtaining an RSSI value of the output signal of the device; comparing the RSSI value of the output signal of the device with a preset second RSSI threshold range in the signal comparator, and controlling the power amplifier circuit to adjust the strength of the output signal of the device to reach a preset output power and / or receiving level according to the comparison result.

[0006] In some possible implementation manners, the frequency domain comparison result specifically includes: redetermining a center frequency point, a start frequency point and an end frequency point of the interference signal, and resetting the bandwidth of the adjustable filter according to the redetermined center frequency point, start frequency point and end frequency point, wherein the bandwidth of the adjustable filter contains the frequency domain of the device but does not contain or does not completely contain the frequency domain of the interference device.

[0007] In some possible implementation manners, the adjusting of the bandwidth of the adjustable filter specifically includes: adjusting a biasing capacitance of the adjustable filter to change the center frequency point, adjusting a biasing current of the adjustable filter to change the start frequency point and the end frequency point, and resetting the bandwidth of the adjustable filter; and / or the adjusting of the strength of the output signal according to the comparison result of the RSSI value of the interference signal and the preset first RSSI threshold range specifically includes: if the RSSI value of the interference signal is greater than the preset first RSSI threshold range, turning off the power amplifier circuit to reduce the energy consumption of the device; and / or if the RSSI value of the interference signal is less than the preset first RSSI threshold range, turning on the power amplifier circuit to increase the strength of the output signal to reach the preset output power and / or receiving level.

[0008] In some possible implementation manners, the turning on / off of the power amplifier circuit specifically includes: if the RSSI value of the output signal of the device is greater than a preset second RSSI threshold range, turning off the power amplifier circuit to reduce the energy consumption of the device; and / or if the RSSI value of the output signal of the device is less than the preset second RSSI threshold range, turning on the power amplifier circuit to increase the strength of the output signal to reach the preset output power and / or receiving level.

[0009] In some possible implementation manners, the preset first RSSI threshold range is [-80dBm, -30dBm]; and / or the preset second threshold range is [-70dBm, -30dBm].

[0010] In a second aspect, the embodiments of the present application disclose a device for suppressing interference signals from peripheral devices, comprising a processing module, which is configured to execute the method as described above.

[0011] In a third aspect, the embodiments of the present application disclose a wireless communication device, comprising a baseband chip, an antenna and a matching circuit thereof, and further comprising: a sampling circuit, configured to detect interference signals from peripheral devices and obtain frequency domain information and RSSI value information of the interference signals, wherein the interference signals comprise adjacent frequency signals and / or spurious signals; a signal comparator, configured to compare the frequency domain information of the interference signals with frequency domain information of signals of the device, and further configured to compare the RSSI value of the interference signals with a preset first RSSI threshold range; a control circuit, configured to adjust the bandwidth of an adjustable filter according to a frequency domain feedback value of the signal comparator, so that the adjustable filter can pass the signals of the device but cannot pass the interference signals from the peripheral devices, and further configured to adjust the intensity of output signals of the device according to an RSSI feedback value of the signal comparator, so that the output signals of the device reach a preset output power and / or receiving level; an adjustable filter, configured to adjust the bandwidth of the filter according to an instruction of the control circuit; a power amplification circuit, configured to be connected / disconnected according to an instruction of the control circuit, and to adjust the output power and / or receiving level of the output signals of the device.

[0012] In some possible implementation manners, the sampling circuit is further configured to: obtain the RSSI value of the output signals of the device; the signal comparator is further configured to: send the RSSI value of the output signals of the device into the signal comparator to compare with a preset second RSSI threshold range, and control the power amplification circuit to adjust the intensity of the output signals of the device according to a comparison result, so that the output signals of the device reach the preset output power and / or receiving level.

[0013] In some possible implementation manners, the device further comprises: a signal operation and processing circuit, configured to send a high / low level to the power amplification circuit according to an instruction of the control circuit, to turn on / off the power amplification circuit; and / or the signal comparator comprises: a frequency domain comparator, configured to compare the frequency domain information of the interference signals from the peripheral devices with the information of the signals of the device; and / or an RSSI feedback comparator, configured to compare the RSSI value of the interference signals with a preset RSSI threshold range, to determine the size relationship between the RSSI value of the interference signals and the preset RSSI threshold range. The sampling circuit includes a coupled microstrip line; and / or The power amplification circuit includes a power amplifier and a receiving antenna gain amplifier; and / or The tunable filter is configured as a bandpass filter.

[0014] The beneficial effects of this application are: The embodiment of the present application detects interference signals from peripheral devices and obtains frequency domain and RSSI value information of the interference signals, wherein the interference signals include adjacent frequency signals and / or spurious signals; after the frequency domain and RSSI value information of the interference signals are respectively sent to a signal comparator for comparison with the frequency domain information of the device signal and a preset first RSSI threshold range, the bandwidth of the adjustable filter is adjusted according to the frequency domain comparison result of the interference signal and the device signal, so that it can pass the device signal but not the interference signal; and the power amplifier is controlled to adjust the intensity of the output signal of the device according to the comparison result of the RSSI value of the interference signal and the preset first RSSI threshold range, so that it reaches a preset output power and / or receiving level, thereby effectively suppressing the adjacent frequency and spurious signal interference of the peripheral devices, ensuring the performance and quality of the device signal; and achieving adaptive adjustment of the output power of the signal, so that it can achieve better and longer-distance signal coverage while saving power consumption and reducing electromagnetic wave pollution as much as possible. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0016] Figure 1 This is a schematic diagram of the standing wave bandwidth of a wireless router filter in the prior art.

[0017] Figure 2 This is a flowchart of a method for suppressing interference signals from peripheral devices provided by an embodiment of the present application; Figure 3 This is a schematic structural diagram of a wireless communication device provided by one embodiment of the present application; Figure 4 is a structural diagram of a wireless communication device provided by another embodiment of the present application; Figure 5 Schematic diagram of the standing wave bandwidth of the wireless router filter provided in an embodiment of the present application.

[0018] Description of reference numerals: 100. A wireless communication device; 111. A coupled microstrip line; 112. A sampling circuit; 120. A signal comparator; 121. An RSSI feedback comparator; 122. A frequency domain comparator; 130. A control circuit; 141. A baseband chip; 142. A receiving antenna gain amplifier; 143. A power amplifier; 150. An adjustable filter; 160. An antenna; 170. A signal operation and processing circuit. DETAILED DESCRIPTION

[0019] In order to make the objectives, technical solutions and advantages of the present application clearer, the following will describe the technical solutions of the present application in detail with reference to the drawings of the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, and the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0020] It should be noted that: in the drawings, the same or similar notations represent the same or similar elements or elements with the same or similar functions throughout; in the description of the present application, the orientations or positional relationships indicated by the terms “center”, “longitudinal”, “transverse”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inner”, “outer” and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and are not intended to indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the scope of protection of the present application; in the description of the present application, “first”, “second” and the like are only used to distinguish each other, and not to indicate their importance and order, etc.

[0021] In the description of the present application, unless otherwise explicitly specified and limited, the terms “mounting”, “connection”, “connecting” should be understood broadly, for example, can be fixed connection, or movable connection, can be detachably connected; can be mechanical connection, or electrical connection; can be directly connected, or indirectly connected through an intermediate medium, can be the communication inside two elements, etc. For those skilled in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0022] Please refer to Figure 2The embodiment of the present application provides a method for inhibiting interference signals from peripheral devices, comprising the following steps: S110: detecting interference signals from peripheral devices, and obtaining frequency domain and RSSI value information of the interference signals, wherein the interference signals comprise adjacent frequency signals and / or stray signals.

[0023] There can be various interference signals in the periphery of the wireless communication device 100, which comprise adjacent frequency signals and stray signals, and are respectively from radio frequency noise of other wireless devices occupying adjacent channels, various noises in the environment close to the wireless communication device 100, etc., mixed with useful signals, intermodulated, and radiated into a receiving link through space, which can cause adverse effects on the communication of the wireless communication device 100. Specifically, the sampling circuit 112 can sample the interference signals, and obtain their frequency domain information and RSSI value information, to obtain interference frequency points and received signal strength indication values.

[0024] S120: after the frequency domain and RSSI value information of the interference signals are respectively sent into the signal comparator 120 and compared with the frequency domain information of the device signals and the preset first RSSI threshold range, the bandwidth of the adjustable filter 150 is adjusted according to the frequency domain comparison result of the interference signals and the device signals, so that the device signals can pass through but the interference signals cannot pass through, and the power amplifier circuit is controlled to adjust the strength of the device output signals according to the RSSI value comparison result of the interference signals and the preset first RSSI threshold range, so that the device output signals reach the preset output power and / or receiving level.

[0025] The embodiment of the present application realizes automatic detection of the frequency bands of peripheral electronic products, and compares the bandwidth and power amplitude of the peripheral stray frequency points with the device, to determine the frequency point bandwidth corresponding to the signals transmitted and received by the device, and determines the TX PA and RX LAN control to be turned on or turned off through sampling and comparison of RSSI signal strength in amplitude, so that power consumption can be better saved or electromagnetic wave pollution can be reduced, and the device can better cover signals at a farther distance, to improve the performance and quality of the product.

[0026] In some possible implementation manners, the method further comprises the following steps: S130: obtaining the RSSI value of the device output signals; S140: sending the RSSI value of the device output signals into the signal comparator 120 and comparing with the preset second RSSI threshold range, and controlling the power amplifier circuit to adjust the strength of the device output signals according to the comparison result, so that the device output signals reach the preset output power and / or receiving level.

[0027] By comparing the RSSI value of the output signal of the wireless communication device 100 with the second threshold range, the gain of the power amplifier circuit is controlled according to the comparison result to control the output signal of the wireless communication device 100 to reach a reasonable output power and receiving level, to ensure signal coverage range while preventing excessive output signal power from causing energy waste and electromagnetic pollution.

[0028] In some possible embodiments, step 120 comprises the following steps: S121: According to the re-determined center frequency point, starting frequency point and end frequency point of the interference signal, the re-determined bandwidth of the center frequency point, starting frequency point and end frequency point contains the frequency domain of the device but does not include or does not completely include the frequency domain of the interference device.

[0029] If the interference signal falls within the bandwidth of the adjustable filter 150, both the useful signal and the adjacent frequency signal can pass through without loss and enter the signal receiving link of the wireless communication device 100, causing great interference to the communication of the device, such as Figure 1 In the wireless communication device 100 (ISM 2.4GHZ, filter, bandwidth is 2412MHZ to 2482MHZ), the S(2,1) standing wave, the general bandwidth is from 2.4GHZ to 2.5GHZ, the bandwidth is 100MHZ, and the difference loss is less than 0.5dB. According to the frequency of the interference signal, the center frequency point, starting frequency point and end frequency point of the adjustable filter 150 are re-determined, so as to change the bandwidth of the adjustable filter 150, to ensure that only the useful signal bandwidth passes through, and the signal quality is ensured.

[0030] In some possible embodiments, step 120 further comprises the following steps: S122: Adjusting the biasing capacitance of the adjustable filter 150 to change the center frequency point, adjusting the biasing current of the adjustable filter 150 to change the starting frequency point and end frequency point, and resetting the bandwidth of the adjustable filter 150.

[0031] The device detects the surrounding interference and stray signals through the coupled microstrip line 111, captures the surrounding stray signals through the sampling circuit 112, and sends them to the frequency domain comparator 122 and the RSSI feedback comparator 121 for analysis and processing to obtain the related stray frequency point and RSSI amplitude signal voltage. The transmission carrier of the device is analyzed and compared to generate an adjusted biasing capacitance to change the center frequency point, and the biasing current is adjusted to change the starting frequency point and end frequency point to determine the bandwidth of the adjustable filter 150, suppress the interference frequency point signal, and ensure that only the useful signal bandwidth passes through to ensure signal quality.

[0032] S123: If the RSSI value of the interference signal is greater than the preset first RSSI threshold range, the power amplifier circuit is turned off to reduce the energy consumption of the device.

[0033] S124: if the RSSI value of the interference signal is less than the preset first RSSI threshold range, then the power amplification circuit is turned on to increase the strength of the output signal to reach the preset output power and / or receiving level.

[0034] According to the comparison result of the RSSI value of the interference signal and the first RSSI threshold range, it is determined whether the strength of the interference signal will affect the communication of the device, and the power amplification circuit is turned off when the interference signal is large and turned on when the interference signal is small, so as to improve the adaptive ability in different interference environments by controlling the switch of the power amplification circuit, and save power consumption and reduce electromagnetic pollution.

[0035] In some possible implementation manners, the step 140 comprises the following steps: S141: if the RSSI value of the output signal of the device is greater than the preset second RSSI threshold range, then the power amplification circuit is turned off to reduce the power consumption of the device.

[0036] S142: if the RSSI value of the output signal of the device is less than the preset second RSSI threshold range, then the power amplification circuit is turned on to increase the strength of the output signal to reach the preset output power and / or receiving level.

[0037] According to the comparison result of the RSSI value of the output signal and the second RSSI threshold range, it is determined whether the power of the output signal is in a reasonable range, and the switch of the power amplification circuit is controlled to reach a reasonable output power and receiving level.

[0038] In some possible implementation manners, the preset first RSSI threshold range is [-80dBm, -30dBm], and the preset second threshold range is [-70dBm, -30dBm].

[0039] The first RSSI threshold range [-80dBm, -30dBm] is used to determine the strength of the interference signal, and when the interference is small, the power amplifier (PA) 143 can be normally turned on when the interference is less than -80dBm, and the PA needs to be turned off when the interference is greater than -30dBm; the second threshold range [-70dBm, -30dBm] is used to determine the strength of the output signal, and when the output signal is greater than -70dBm, the PA is started and a hysteresis control is formed through a 10dBm threshold difference to avoid frequent switching due to signal fluctuation, and at the same time, the transmission link loss is compensated, the power consumption is optimized, the PA non-linear distortion under strong interference is prevented, and the anti-interference ability and transmission efficiency are balanced.

[0040] The embodiment of the application further discloses a device for suppressing interference signals of peripheral devices, comprising a processing module, and the processing module is used to execute the method for suppressing interference signals of peripheral devices in any of the above embodiments.

[0041] The embodiments of the present application also disclose a wireless communication device 100, which comprises a baseband chip 141, an antenna 160 and a matching circuit thereof, and further comprises: a sampling circuit 112, configured to detect an interference signal from a peripheral device and obtain frequency domain information and RSSI value information of the interference signal, wherein the interference signal comprises adjacent frequency signals and / or stray signals; a signal comparator 120, configured to compare the frequency domain information of the interference signal with frequency domain information of a device signal, and further configured to compare the RSSI value of the interference signal with a preset first RSSI threshold range; a control circuit 130, configured to adjust a bandwidth of an adjustable filter 150 according to a frequency domain feedback value of the signal comparator 120, so that the device signal can pass through but the interference signal of the peripheral device cannot pass through; and further configured to adjust an intensity of a device output signal according to an RSSI feedback value of the signal comparator, so that the device output signal reaches a preset output power and / or receiving level; the adjustable filter 150, configured to adjust the bandwidth of the filter according to an instruction of the control circuit 130; a power amplifier 143, configured to be connected / disconnected according to an instruction of the control circuit 130, so as to adjust the output power and / or receiving level of the device output signal.

[0042] In some possible implementation manners, the sampling circuit 112 is further configured to: obtain an RSSI value of the device output signal; the signal comparator 120 is further configured to: send the RSSI value of the device output signal into the signal comparator to compare with a preset second RSSI threshold range, and control the power amplifier circuit to adjust the intensity of the device output signal according to a comparison result, so that the device output signal reaches the preset output power and / or receiving level.

[0043] In some possible implementation manners, the wireless communication device 100 further comprises: a signal operation and processing circuit 170, configured to send a high level / low level to the power amplifier 143 according to an instruction of the control circuit 130, so as to turn on / off the power amplifier circuit.

[0044] In some possible implementation manners, the signal comparator 120 comprises: a frequency domain comparator 122, configured to compare the frequency domain information of the interference signal of the peripheral device with the information of the device signal; and an RSSI feedback comparator 121, configured to compare the RSSI value of the interference signal with the preset RSSI threshold range, and determine a size relationship between the RSSI value of the interference signal and the preset RSSI threshold range.

[0045] In some possible implementation manners, the sampling circuit 112 comprises a coupled microstrip line 111.

[0046] The coupling microstrip line 111 is coupled to the antenna 160, and the received signal of the antenna 160 can be extracted through the coupling effect, and then sampling is performed, so that the sampling of the interference signal in the received signal is completed without affecting the signal transmission, and the accuracy of the frequency domain analysis and the RSSI value detection of the interference signal is improved.

[0047] In some possible implementation manners, the tunable filter 150 is configured as a band-pass filter.

[0048] In some possible implementation manners, the power amplification circuit includes the power amplifier 143 and the receiving antenna gain amplifier 142.

[0049] The RSSI value of the interference signal is compared with the first RSSI threshold range, and if the RSSI value is greater than the first RSSI threshold range, the power amplifier 143 and the receiving antenna gain amplifier 142 are turned off, so that the antenna 160 directly transmits the received signal to the baseband chip 141 through the matching circuit for processing, thereby preventing the signal-to-noise ratio from being deteriorated due to the superposition of the spurious signal and the useful signal, causing greater interference to the wireless communication device 100, and enhancing the communication stability of the wireless communication device 100. Specifically, please refer to Figure 3 The power amplifier (PA) 143 is connected to the TX end of the baseband chip 141, and the receiving antenna gain (RX Gain) amplifier (LNA) is connected to the RX end of the baseband chip 141. In terms of amplitude RSSI, if the comparison RSSI is greater than -30 dBm, a low-level signal is output through the signal operation and processing circuit 170 to turn off the PA output and the LNA amplification circuit; if the comparison RSSI is less than -80 dBm, a high-level signal is output through the signal operation and processing circuit 170 to turn on the PA output and the LNA amplification circuit, so as to ensure the product energy consumption and the junction energy effect, ensure that the product can better cover a longer distance transmission, and obtain a better product experience.

[0050] In some possible implementation manners, the sampling circuit 112 is further configured to acquire the RSSI value of the filtered signal after the tunable filter 150; the signal comparator 120 is configured to compare the RSSI value of the filtered signal with the first RSSI threshold range; and the control circuit 130 is configured to turn on / off the receiving antenna gain amplifier 142 according to the comparison result.

[0051] For example, the RSSI value is greater than -30dBm, a low level is output by the signal operation and processing circuit 170, the receiving antenna gain amplifier 142 is closed, the stray signal is prevented from being amplified at the receiving end to interfere with the baseband chip 141, and the stray signal is filtered by the bandwidth of the adjustable filter 150 to filter out adjacent frequency interference. If the RSSI value of the filtered signal drops to -80dBm, it indicates that the purity of the useful signal in the filtered signal is very high, at which time the receiving antenna gain amplifier 142 is opened to improve the signal quality. If the RSSI value of the filtered signal is greater than -80dBm, it indicates that there is still an interference signal that cannot be filtered out by the adjustable filter 150 in the filtered signal, and the receiving antenna gain amplifier 142 is continuously kept closed to prevent the remaining interference signal from being amplified to affect the communication stability of the wireless communication device 100. The RSSI value of the filtered signal is detected to determine the filtering effect of the adjustable filter 150, and whether the receiving antenna gain amplifier 142 is restored to normal communication is controlled, so that the response capability of the wireless communication device 100 to a complex interference environment is realized.

[0052] The embodiment of the present application improves the problem of adjacent frequency and stray interference, and reference is made to Figure 5 The figure is a bandwidth schematic diagram of a wireless router of the embodiment of the present application. When the product normally communicates, the bandwidth is at a frequency point of 2442MHZ, and the bandwidth is 40MH, that is, the starting frequency point is Fn-20MHZ, and the terminal frequency point is Fn+20MHZ. The corresponding band-pass filter is adjusted from a 100MH bandwidth to a 40MH bandwidth, the Q value of the filter is improved, the out-of-band signal is suppressed, and the signal quality of the device is ensured. In terms of amplitude, whether to enhance and weaken the signal strength of the product is confirmed by adaptively detecting and feeding back the RSSI level, so that the appropriate output power and receiving level are achieved.

[0053] The embodiment of the present application further provides a computer readable storage medium, which stores computer program codes, when the computer program codes run on a computer, the computer program codes make the computer execute the method of any possible implementation manner in each embodiment.

[0054] The embodiment of the present application further provides a computer program product, which comprises computer program codes, when the computer program codes run on a computer, the computer program codes make the computer execute the method of any possible implementation manner in the first aspect or the second aspect.

[0055] The embodiment of the present application further provides a computer program, when the computer program codes run on a computer, the computer program codes make the computer execute the method of any possible implementation manner in any preceding embodiment.

[0056] Those skilled in the art should be aware that, in the above one or more examples, the functions described in the embodiments of the present application can be implemented in hardware, software, firmware or any combination thereof. When implemented in software, the functions can be stored in a computer readable medium or transmitted as one or more instructions or code on the computer readable medium. The computer readable medium includes computer storage medium and communication medium, and the communication medium includes any medium that facilitates transfer of computer program from one place to another. The storage medium can be any available medium that can be accessed by a general purpose or special purpose computer.

[0057] It is noted that the above merely represents the preferred embodiments of the present application and the principles of the technology applied. Those skilled in the art will understand that the present application is not limited to the specific embodiments described herein, and that various obvious changes, modifications and substitutions can be made without departing from the scope of the present application. Therefore, although the present application has been described in detail through the above embodiments, the present application is not limited to the above embodiments, and can include more other equivalent embodiments without departing from the concept of the present application, and the scope of the present application is determined by the scope of the claims.

Claims

1. A method for suppressing interference signals from peripheral devices, used in wireless communication equipment, characterized in that: The method comprises: detecting interference signals from peripheral devices and obtaining frequency domain and RSSI value information of the interference signals, wherein the interference signals include adjacent frequency signals and / or spurious signals; The frequency domain and RSSI value information of the interference signal are respectively sent to the signal comparator for comparison with the frequency domain information of the device signal and the preset first RSSI threshold range. The bandwidth of the adjustable filter is adjusted according to the frequency domain comparison result of the interference signal and the device signal, so that it can pass the device signal but not the interference signal. The power amplifier circuit is controlled to adjust the intensity of the output signal of the device according to the comparison result of the RSSI value of the interference signal and the preset first RSSI threshold range, so that it reaches the preset output power and / or reception level.

2. The method according to claim 1, characterized in that The method further comprises: Obtaining the RSSI value of the output signal of the device; The RSSI value of the output signal of the device is sent to the signal comparator for comparison with a preset second RSSI threshold range, and the power amplifier circuit is controlled according to the comparison result to adjust the intensity of the output signal of the device to reach a preset output power and / or receiving level.

3. The method according to claim 2, characterized in that The frequency domain comparison results specifically include: The center frequency, starting frequency and end frequency are re-determined according to the frequency of the interference signal, and the bandwidth reset by the re-determined center frequency, starting frequency and end frequency includes the frequency domain of this device but does not include or does not completely include the frequency domain of the interfering device.

4. The method according to any one of claims 1 to 3, characterized in that The adjusting the bandwidth of the adjustable filter specifically includes: Adjusting the bias capacitance of the tunable filter to change its center frequency, adjusting the bias current of the tunable filter to change its starting frequency and ending frequency, and resetting the bandwidth of the tunable filter; and / or The adjusting the strength of the output signal according to the comparison result of the RSSI value of the interference signal and the preset first RSSI threshold range specifically includes: If the RSSI value of the interference signal is greater than a preset first RSSI threshold range, shutting down the power amplifier circuit to reduce device energy consumption; and / or If the RSSI value of the interference signal is less than a preset first RSSI threshold range, the power amplification circuit is turned on to increase the strength of the output signal to reach a preset output power and / or receiving level.

5. The method according to claim 2, characterized in that The controlling of the power amplifier circuit specifically includes: If the RSSI value of the output signal of the device is greater than a preset second RSSI threshold range, the power amplifier circuit is turned off to reduce the energy consumption of the device; and / or If the RSSI value of the output signal of the device is less than a preset second RSSI threshold range, the power amplifier circuit is turned on to increase the strength of the output signal to reach a preset output power and / or receiving level.

6. The method according to claim 5, characterized in that The preset first RSSI threshold range is [-80dBm, -30dBm]; and / or the preset second threshold range is [-70dBm, -30dBm].

7. A device for suppressing interference signals from peripheral devices, characterized in that: The method comprises a processing module, wherein the processing module is configured to execute the method according to any one of claims 1 to 6.

8. A wireless communication device comprising a baseband chip, an antenna and a matching circuit thereof, characterized in that: Also included are: A sampling circuit, configured to detect interference signals from peripheral devices and obtain frequency domain and RSSI value information of the interference signals, wherein the interference signals include adjacent frequency signals and / or spurious signals; a signal comparator, configured to compare the frequency domain information of the interference signal with the frequency domain information of the local device signal, and further configured to compare the RSSI value of the interference signal with a preset first RSSI threshold range; a control circuit configured to adjust the bandwidth of the adjustable filter based on the frequency domain feedback value of the signal comparator so that the filter passes the device signal but blocks the interference signals of the peripheral devices; and further configured to adjust the strength of the device output signal based on the RSSI feedback value of the signal comparator so that the output signal reaches a preset output power and / or reception level; an adjustable filter, configured to adjust the bandwidth of the filter according to instructions from the control circuit; The power amplifier circuit is used to connect / disconnect according to the instructions of the control circuit and adjust the output power and / or reception level of the output signal of this device.

9. The wireless communication device according to claim 8, wherein: The sampling circuit is further configured to: Get the RSSI value of the output signal of this device; The signal comparator is further configured to: The RSSI value of the output signal of the device is sent to the signal comparator for comparison with a preset second RSSI threshold range, and the power amplifier circuit is controlled according to the comparison result to adjust the strength of the output signal of the device to reach the preset output power and / or receiving level.

10. The wireless communication device according to claim 8 or 9, characterized in that Also includes: a signal operation and processing circuit, configured to send a high level / low level to the power amplifier circuit according to an instruction of the control circuit, and turn on / off the power amplifier circuit; and / or The signal comparator includes: A frequency domain comparator, configured to compare the frequency domain information of the interference signal of the peripheral device with the information of the signal of the device; An RSSI feedback comparator is used to compare the RSSI value of the interference signal with a preset RSSI threshold range to determine the magnitude relationship between the RSSI value of the interference signal and the preset RSSI threshold range; and / or The sampling circuit includes a coupled microstrip line; and / or The power amplification circuit includes a power amplifier and a receiving antenna gain amplifier; and / or The tunable filter is configured as a bandpass filter.

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