Communication device and interference detection method

Abstract

The embodiment of the invention discloses communication equipment and an interference detection method. The communication equipment comprises a communication path and an interference detection path, wherein the interference detection path comprises an adjustable filter, a first gain control module, a synchronization module and an interference detection module; the filtering input end of the adjustable filter is connected to the communication path; the communication path is used for sending or receiving a signal on a current channel; the synchronization module is used for controlling the adjustable filter to filter the initial signal reaching the filtering input end when the signal is sent or received, filtering out the signal of the current communication frequency in the initial signal, and determining an initial interference signal; the first gain control module is used for performing gain adjustment on the initial interference signal according to the reference signal strength corresponding to the interference detection module to determine an interference signal; and the interference detection module is used for detecting the interference signal and determining the interference signal strength corresponding to the current channel.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a communication device and an interference detection method. Background Art

[0002] At present, some local area network communication methods such as Bluetooth and WiFi need to perform interference detection on the communication channel when performing spread spectrum communication. When interference detection and data communication are carried out simultaneously, the signal received by the interference detection module is usually adjusted by the gain of data communication, and the signal amplitude may exceed the effective range of interference detection, making it impossible to effectively perform interference detection; and the signal received by the interference detection module often contains useful signals, which are difficult to separate from background noise, resulting in inaccurate interference detection, thereby reducing the communication rate and communication quality of the communication system. Summary of the invention

[0003] The embodiments of the present application are intended to provide a communication device and an interference detection method, which can improve the accuracy of interference detection, thereby improving the communication rate and communication quality of the communication device.

[0004] The technical solution of this application is implemented as follows:

[0005] In a first aspect, an embodiment of the present application provides a communication device, comprising: a communication path and an interference detection path; wherein the interference detection path comprises: an adjustable filter, a gain control module, a synchronization module and an interference detection module; a filter input end of the adjustable filter is connected to the communication path;

[0006] The communication path is used to send or receive signals on the current channel and at the current communication frequency;

[0007] The synchronization module is used to control the adjustable filter to filter the initial signal arriving at the filter input end when the signal is sent or received, filter out the signal of the current communication frequency in the initial signal, and determine the initial interference signal;

[0008] The gain control module is used to adjust the gain of the initial interference signal according to the reference signal strength corresponding to the interference detection module to determine the interference signal;

[0009] The interference detection module is used to detect the interference signal and determine the interference signal strength corresponding to the current channel.

[0010] In a second aspect, an embodiment of the present application provides a communication device, comprising: a communication path and an interference detection path; wherein the communication path comprises: a first radio frequency channel; the interference detection path comprises: a second radio frequency channel, an adjustable filter, a gain control module, a synchronization module and an interference detection module;

[0011] The communication path is used to send or receive signals at a current communication frequency on a current channel based on the first radio frequency channel;

[0012] The second radio frequency channel is used to receive signals on the current channel;

[0013] The synchronization module is used to control the adjustable filter to filter the signal received by the second radio frequency channel to filter out the signal of the current communication frequency and determine the initial interference signal when the communication path sends or receives a signal;

[0014] The gain control module is used to perform gain adjustment based on the initial interference signal according to the reference signal strength corresponding to the interference detection module to determine the interference signal;

[0015] The interference detection module is used to detect the interference signal and determine the interference signal strength corresponding to the current channel.

[0016] In a third aspect, an embodiment of the present application provides an interference detection method, which is applied to the communication device provided in the first aspect above; the method includes:

[0017] Send or receive a signal through a communication path on a current channel at a current communication frequency;

[0018] By means of the synchronization module, when a signal is sent or received, the adjustable filter is controlled to filter the initial signal arriving at the filter input end, the signal of the current communication frequency in the initial signal is filtered out, and an initial interference signal is determined;

[0019] By means of a gain control module, the initial interference signal is gain-adjusted according to the reference signal strength corresponding to the interference detection module to determine the interference signal;

[0020] The interference signal is detected by an interference detection module to determine the interference signal strength corresponding to the current channel.

[0021] In a fourth aspect, an embodiment of the present application provides an interference detection method, which is applied to the communication device provided in the second aspect above; the method includes:

[0022] Sending or receiving a signal at a current communication frequency on a current channel based on a first radio frequency channel through a communication path;

[0023] receiving a signal on the current channel through a second radio frequency channel;

[0024] By means of the synchronization module, when the communication path is sending or receiving a signal, the adjustable filter is controlled to filter based on the signal received by the second radio frequency channel, to filter out the signal of the current communication frequency, and to determine an initial interference signal;

[0025] By means of a gain control module, according to the reference signal strength corresponding to the interference detection module, a gain adjustment is performed based on the initial interference signal to determine the interference signal;

[0026] The interference signal is detected by an interference detection module to determine the interference signal strength corresponding to the current channel.

[0027] In a fifth aspect, an embodiment of the present application provides a computer-readable storage medium storing executable instructions for causing a processor to execute and implement the interference detection method for a communication device applied to the first aspect provided in an embodiment of the present application.

[0028] In the first aspect, an embodiment of the present application provides a computer-readable storage medium storing executable instructions for causing a processor to execute and implement the interference detection method for a communication device applied to the second aspect provided in the embodiment of the present application.

[0029] The embodiment of the present application provides a communication device and an interference detection method. When the communication path of the communication device is on the current channel and sends or receives a signal at the current communication frequency, the synchronization module can be used to control the adjustable filter to use the current communication frequency as the frequency of the band-stop filter, and the initial signal entering the interference detection path and reaching the filter input end of the adjustable filter is filtered, and the signal of the current communication frequency is filtered out to determine the initial interference signal. In this way, the useful signal on the current communication frequency can be separated from the background noise on the current channel, and interference detection is performed on the initial interference signal, so that communication and noise detection are parallel, and the misdetection of the useful signal in the current channel by the interference detection module during the signal transmission and reception process is reduced, thereby improving the accuracy of anti-interference detection. In addition, through the gain control module on the interference detection path, the initial interference signal gain is adjusted according to the reference signal strength corresponding to the interference detection module, and the interference detection is performed on the interference signal obtained by the gain adjustment through the interference detection module, so that the gain control of data communication is decoupled from the gain control of interference detection, so that the interference detection module can work normally within the effective signal range, thereby further improving the accuracy of anti-interference detection, and then improving the communication rate and communication quality of the communication device. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 A schematic diagram of the structure for implementing interference detection on current communication equipment;

[0031] Figure 2It is a schematic diagram of the process of leakage of the transmitted signal to the interference detection module when the frequency division system signal is transmitted on the current communication device;

[0032] Figure 3 An optional structural diagram of a communication device provided in an embodiment of the present application;

[0033] Figure 4 An optional structural diagram of a communication device provided in an embodiment of the present application;

[0034] Figure 5 An optional structural diagram of a communication device provided in an embodiment of the present application;

[0035] Figure 6 An optional structural diagram of a communication device provided in an embodiment of the present application;

[0036] Figure 7 An optional structural diagram of a communication device provided in an embodiment of the present application;

[0037] Figure 8 An optional structural diagram of a communication device provided in an embodiment of the present application;

[0038] Fig. 9 An optional structural diagram of a communication device provided in an embodiment of the present application;

[0039] Fig.10 An optional structural diagram of a communication device provided in an embodiment of the present application;

[0040] Fig.11 An optional structural diagram of a communication device provided in an embodiment of the present application;

[0041] Fig.12 An optional structural diagram of a communication device provided in an embodiment of the present application;

[0042] Fig.13 An optional structural diagram of a communication device provided in an embodiment of the present application;

[0043] Fig.14 An optional structural diagram of a communication device provided in an embodiment of the present application;

[0044] Fig.15 An optional structural diagram of a communication device provided in an embodiment of the present application;

[0045] Fig.16 An optional structural diagram of a communication device provided in an embodiment of the present application;

[0046] Fig.17An optional flow chart of an interference detection method provided in an embodiment of the present application;

[0047] Fig.18 An optional flowchart of an interference detection method provided in an embodiment of the present application. DETAILED DESCRIPTION

[0048] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings. The described embodiments should not be regarded as limiting the present application. All other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of this application.

[0049] In the following description, reference is made to “some embodiments”, which describe a subset of all possible embodiments, but it will be understood that “some embodiments” may be the same subset or different subsets of all possible embodiments and may be combined with each other without conflict.

[0050] In the following description, the terms "first\second\third" involved are merely used to distinguish similar objects and do not represent a specific ordering of the objects. It can be understood that "first\second\third" can be interchanged with a specific order or sequence where permitted, so that the embodiments of the present application described here can be implemented in an order other than that illustrated or described here.

[0051] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein are only for the purpose of describing the embodiments of this application and are not intended to limit this application.

[0052] Here, the nouns and terms involved in the embodiments of the present application are explained. The nouns and terms involved in the embodiments of the present application are applicable to the following interpretations:

[0053] Bluetooth communication implements spread spectrum communication through frequency hopping to obtain better anti-interference ability. The purpose of frequency hopping is to effectively avoid the spectrum with interference by quickly hopping to different channels for communication, thereby reducing interference. At present, before determining the frequency hopping sequence, the relevant technology mainly adopts interference detection / noise detection to detect the interference / noise level of each channel and obtain the interference / noise energy level, such as the signal strength (Received Signal Strength Indication, RSSI) of the interference / noise as the interference / noise value; then, according to the RSSI of the useful signal received by the other end or the RSSI of the useful signal received by itself, it is compared with the interference / noise value to obtain the signal-to-noise ratio; then, according to the signal-to-noise ratio, the communication quality of the current channel is judged, and it is determined whether to use the current channel.

[0054] At present, the interference detection in related technologies includes time-division interference detection and frequency-division interference detection. The interference detection module is usually configured on the receiving (Receive, RX) path of the communication device to monitor the signal of the communication channel to detect noise / interference. For example, the receiving channel of the communication device can be as follows Figure 1 shown.

[0055] based on Figure 1 For time-division interference detection, when there are data packets to be received, the entire physical channel will be occupied for data communication; when there are no data packets to be received, or when the priority of interference detection is higher than the priority of data communication, the physical channel will be occupied for interference detection. When there are data packets to be sent, Figure 1 The RF front-end module in the communication device will switch to the transmit (TX) path of the communication device. At this time, the RX path is cut off and effective interference detection cannot be performed. In other words, time-division interference detection cannot be performed simultaneously with normal data communication, thereby reducing the accuracy and sensitivity of interference detection, and further reducing the communication rate and communication quality of the communication system.

[0056] For frequency division interference detection, in the RX communication phase of the data, based on Figure 1 The signal received by the antenna passes through the front-end filter 10 and the RF front-end module 11, and then passes through the down-conversion module 12 in the receiving path for frequency conversion, and enters the automatic gain control (AGC) module 13. The AGC module 13 will perform AGC adjustment according to the size of the frequency-converted signal, and input the adjusted signal into the filter 14 and the interference detection module 15. Among them, the filter 14 filters the adjusted signal, and then processes it through the analog-to-digital converter (ADC) 16 and the demodulator (or decoder) 17, and inputs the useful signal detection module 18 to detect and obtain the RSSI of the useful signal for the calculation of the signal-to-noise ratio. However, the signal adjusted by AGC may be too large when input into the interference detection module 15, exceeding the normal signal processing range of the interference detection module 15, so that the interference addition test cannot be effectively performed, and the signal input into the interference detection module 15 contains the useful signal, and the useful signal cannot be separated from the background noise, thereby reducing the accuracy of interference detection, and further reducing the communication rate and communication quality of the communication system.

[0057] For frequency division interference detection, in the TX communication stage of data, such as Figure 2As shown, the transmission path of the communication device modulates (or encodes) the data to be transmitted through the modulator (or encoder) 19, converts the modulated (or encoded) digital signal into an analog signal through the digital-to-analog converter 20, filters the analog signal through the filter 21, and then performs gain adjustment and up-conversion through the AGC module 22 and the up-conversion module 23, and transmits it to the RF front-end module 11 for signal transmission. However, when the transmission path is transmitting data, due to the transmission power angle of its own channel, the signal will leak to the interference detection module 15 on the receiving path, making it impossible for the interference detection module 15 to strip off the leaked signal, resulting in inaccurate interference noise detection, thereby reducing the communication rate and communication quality of the communication system.

[0058] The embodiments of the present application provide a communication device and an interference detection method, which can improve the accuracy of interference detection, thereby improving the communication rate and communication quality of the communication device. Figure 3 , Figure 3 An optional structural diagram of a communication device provided in an embodiment of the present application.

[0059] like Figure 3 As shown, the communication device 1 provided in the embodiment of the present application includes: a communication path 100 and an interference detection path 200; wherein the interference detection path 200 includes: an adjustable filter 201, a gain control module 202, a synchronization module 203 and an interference detection module 204; the filter input end of the adjustable filter 201 is connected to the communication path 100;

[0060] Communication path 100, used to send or receive signals on the current channel and at the current communication frequency;

[0061] The synchronization module 203 is used to control the adjustable filter 201 to filter the initial signal arriving at the filter input terminal when the signal is sent or received, filter out the signal of the current communication frequency in the initial signal, and determine the initial interference signal;

[0062] The gain control module 202 is used to adjust the gain of the initial interference signal according to the reference signal strength corresponding to the interference detection module to determine the interference signal;

[0063] The interference detection module 204 is used to detect the interference signal and determine the interference signal strength corresponding to the current channel.

[0064] The communication equipment of the embodiment of the present application may include: a communication equipment that supports interference detection of spread spectrum communication, exemplarily, it may be a wireless communication equipment such as Bluetooth, Wi-Fi, ZigBee, Lora, etc., and the specific selection is made according to the actual situation, and the embodiment of the present application is not limited.

[0065] In the embodiment of the present application, the communication path is a path for the communication device to send and receive useful signals. When the communication device sends and receives signals, it sends and receives signals with the opposite communication device through the communication path on the current communication channel, that is, the current channel, at the current communication frequency. Here, when the communication device receives a signal, the current communication frequency is the frequency at which the communication device currently receives the signal; when the communication device sends a signal, the current communication frequency is the frequency at which the communication device currently sends the signal.

[0066] In the embodiment of the present application, the current channel is the channel where the communication device is currently working, and the current communication frequency is the frequency point in the current channel. For example, communication devices such as Bluetooth will hop frequency when working, that is, different channels are selected to work at different times. The current channel is the channel where the Bluetooth device is currently working.

[0067] In the embodiment of the present application, the synchronization module is connected to the communication path, and can perform timing synchronization with the signal reception and transmission of the communication path, and obtain the current communication frequency of the signal reception and transmission on the communication path. In this way, when the communication path is transmitting and receiving signals, the synchronization module can control the adjustable filter to adjust the filtering frequency to the current communication frequency, filter out the signal corresponding to the current communication frequency from the initial signal reaching the filter input end of the adjustable filter, retain other signals in the initial signal, and determine the initial interference signal.

[0068] In the embodiment of the present application, the interference detection path is used to detect the interference signal or noise in the current channel, so as to evaluate the channel quality of the current channel based on the detected noise value, that is, the interference signal strength, for selection when the communication device hops frequency. The interference detection path is connected to the communication path, and the communication path is used to obtain the signal in the current channel for interference detection.

[0069] Based on the above Figure 1 and Figure 2 According to the description, when the communication channel is transmitting and receiving signals, the useful signal will enter the interference detection channel and mix with the noise or interference signal in the current channel. In the embodiment of the present application, the interference detection channel is connected to the communication channel through the filter input end of the adjustable filter; in this way, the initial signal reaching its filter input end, that is, the signal entering the interference detection channel from the communication channel, can be filtered by the adjustable filter, and the signal of the current communication frequency can be filtered out, thereby separating the useful signal from the interference signal in the current channel and obtaining the initial interference signal.

[0070] In some embodiments, the adjustable filter may be a band-stop filter, and the filter frequency of the adjustable filter may be adjusted in real time according to the current communication frequency. For example, the adjustable filter may be a notch filter, which is selected according to actual conditions and is not limited in the embodiments of the present application.

[0071] In the embodiment of the present application, the communication path includes a gain control module for performing gain control on the useful signal on the communication path. The gain control module in the interference detection path is independent of the gain control module of the communication path, and is used for gain control of the initial interference signal output by the adjustable filter. In this way, the gain control module in the interference detection path can be used to adjust the gain of the initial interference signal according to the reference signal strength corresponding to the interference detection module to determine the interference signal. Here, the reference signal strength corresponding to the interference detection module can be determined according to the effective working range of the interference detection module, and is specifically selected according to the actual situation, and the embodiment of the present application does not limit it.

[0072] In an embodiment of the present application, the interference detection module performs signal strength detection on the interference signal output by the gain control module in the interference detection path, determines the signal strength corresponding to the interference signal of at least one frequency point in the current channel, and determines the interference signal strength corresponding to the current channel based on the signal strength corresponding to the interference signal of at least one frequency point.

[0073] Exemplarily, the interference detection module may determine the sum of the signal strengths corresponding to the interference signals of at least one frequency point as the interference signal strength corresponding to the current channel. Alternatively, the interference signal strength corresponding to the current channel may be determined based on the signal strength corresponding to the interference signal of at least one frequency point using other interference assessment calculation methods, which is specifically selected according to actual conditions and is not limited in the embodiments of the present application.

[0074] In some embodiments, due to filtering at the current communication frequency, the noise energy changes. The interference detection module is also used to determine from the interference signal, a first interference signal whose frequency difference with the current communication frequency is less than a preset frequency difference threshold; when detecting the interference signal, the first interference signal is not detected, or the signal strength corresponding to the first interference signal is removed from the signal strength corresponding to the interference signal to determine the interference signal strength corresponding to the current channel.

[0075] It is understandable that when the communication path of the communication device is on the current channel and sends or receives a signal at the current communication frequency, the synchronization module can be used to control the adjustable filter to use the current communication frequency as the frequency point of the band-stop filter, and the initial signal entering the interference detection path and reaching the filter input end of the adjustable filter is filtered, and the signal of the current communication frequency is filtered out to determine the initial interference signal. In this way, the useful signal on the current communication frequency can be separated from the background noise on the current channel, and interference detection is performed on the initial interference signal, so that communication and noise detection are parallel, and the interference detection module is reduced. The misdetection of the useful signal in the current channel by the interference detection module during the signal transmission and reception process is reduced, thereby improving the accuracy of anti-interference detection. In addition, through the gain control module on the interference detection path, the initial interference signal gain is adjusted according to the reference signal strength corresponding to the interference detection module, and the interference detection is performed on the interference signal obtained by the gain adjustment through the interference detection module, realizing the decoupling of the gain control of data communication and the gain control of interference detection, so that the interference detection module can work normally within the effective signal range, thereby further improving the accuracy of anti-interference detection, and then improving the communication rate and communication quality of the communication device.

[0076] In some embodiments, based on Figure 3 ,like Figure 4 As shown, the communication path 100 includes: a receiving channel 101; the filter input end of the adjustable filter 201 is connected to the receiving channel 101; the current communication frequency includes: the current receiving frequency;

[0077] A receiving channel 101, used to determine an initial signal based on a received time domain signal or a frequency domain signal;

[0078] The synchronization module 203 is further used to control the adjustable filter 201 to filter the initial signal in the receiving time slot of the receiving channel, filter out the signal of the current receiving frequency in the initial signal, and determine the initial interference signal.

[0079] In the embodiment of the present application, the receiving channel 101 in the communication path 100 can receive the time domain signal corresponding to the time division system or the frequency domain signal corresponding to the frequency division system during the signal receiving stage of the time division system or the frequency division system. The receiving channel 101 can determine the initial signal input from the receiving channel 101 to the filter input end of the adjustable filter 201 based on the received time domain signal or frequency domain signal and the access point of the filter input end of the adjustable filter 201 on the receiving channel 101.

[0080] In the embodiment of the present application, the synchronization module is connected to the receiving channel and synchronized with the timing and frequency of the receiving channel to obtain the receiving time slot and current receiving frequency of the receiving channel for the signal. In this way, the synchronization module can control the adjustable filter 201 to filter the initial signal entering from the receiving channel at the receiving time slot of the receiving channel, filter out the signal of the current receiving frequency in the initial signal, remove the useful signal from the initial signal, and thus determine the initial interference signal.

[0081] It can be understood that, by controlling the adjustable filter on the receiving time slot of the receiving channel through the synchronization module, the initial signal determined based on the received time domain signal or frequency domain signal is filtered to remove the signal of the current receiving frequency, thereby achieving effective separation of useful signals and background noise when performing interference detection in the signal receiving stage of the time division system or the frequency division system, thereby improving the accuracy of interference detection and further improving the communication rate and communication quality of the communication equipment.

[0082] In some embodiments, based on Figure 3 ,like Figure 5 As shown, the communication path 100 includes: a radio frequency channel 102, a receiving channel 101 and a transmitting channel 103; the filter input end of the adjustable filter 201 is connected to the receiving channel 101; the output end of the transmitting channel 103 and the input end of the receiving channel 101 are connected to the radio frequency transceiver interface 1021 of the radio frequency channel 102; the current communication frequency includes: the current transmitting frequency;

[0083] The receiving channel 101 is used to determine the initial signal based on the frequency domain signal output from the transmitting channel 103 to the radio frequency transceiver interface and entering the receiving channel 101;

[0084] The synchronization module 203 is further used to control the adjustable filter 201 to filter the initial signal in the transmission time slot of the transmission channel 103, filter out the signal of the current transmission frequency in the initial signal, and determine the initial interference signal.

[0085] In the embodiment of the present application, the input end of the receiving channel and the output end of the sending channel are connected to the same RF transceiver interface, and the signal is sent and received through the RF channel corresponding to the RF transceiver interface. In this way, when the sending channel sends a signal, the signal will be output to the RF transceiver interface, thereby leaking into the receiving channel and then reaching the filter input end of the adjustable filter connected to the receiving channel.

[0086] In the embodiment of the present application, the synchronization module is connected to the transmission channel and synchronized with the timing and frequency of the transmission channel to obtain the transmission time slot and current transmission frequency of the transmission channel for the signal. In this way, the synchronization module can control the adjustable filter 201 to filter the initial signal leaked from the transmission channel into the receiving channel and reaching the filter input end at the transmission time slot of the transmission channel, filter out the signal of the current receiving frequency in the initial signal, remove the useful signal from the initial signal, and thus determine the initial interference signal.

[0087] It can be understood that, through the synchronization module, at the sending time slot of the receiving channel, the adjustable filter is controlled to filter the initial signal determined based on the frequency domain signal entering the receiving channel from the sending channel, and the signal of the current receiving frequency is removed, thereby achieving effective separation of useful signals and background noise when performing interference detection in the signal sending stage of the frequency division system, thereby improving the accuracy of interference detection and further improving the communication rate and communication quality of the communication equipment.

[0088] In some embodiments, based on Figure 4 or Figure 5 , the receiving channel may further include a first frequency conversion module. Exemplarily, based on Figure 5 , you can Figure 6 As shown, the receiving channel 101 also includes: a first frequency conversion module 1011; the input end of the first frequency conversion module 1011 is connected to the RF transceiver interface 1021 of the RF channel 102 in the communication path 100; the filter input end of the adjustable filter 201 is connected to the output end of the first frequency conversion module 1011;

[0089] The first frequency conversion module 1011 is used to down-convert the time domain signal or frequency domain signal received by the receiving channel 101 to determine the initial signal; or, to down-convert the frequency domain signal output from the sending channel 103 to the RF transceiver interface 1021 and enter the receiving channel 101 to determine the initial signal.

[0090] In an embodiment of the present application, the first frequency conversion module may be a down-conversion module on a receiving channel, and the first frequency conversion module down-converts the time domain signal or the frequency domain signal received by the receiving channel, that is, the time domain signal or the frequency domain signal received by the RF channel and input into the receiving channel, thereby reducing the frequency of the time domain signal or the frequency domain signal and determining the initial signal.

[0091] For example, Figure 7 As shown, the adjustable filter may be a configurable notch filter 24, the gain control module in the interference detection path may be an automatic gain control module 25, the synchronization module may be a synchronization controller 26, and the first frequency conversion module may be a down-conversion module 12 in the receiving channel.

[0092] In some embodiments, based on Figure 4 or Figure 5 , for example, based on Figure 5 ,like Figure 8 As shown, the receiving channel 101 includes: a first frequency conversion module 1011 ; an input end of the first frequency conversion module 1011 and a filter input end of the adjustable filter 201 are connected to a radio frequency transceiver interface 1021 of the radio frequency channel 102 in the communication path 100 .

[0093] In the embodiment of the present application, Figure 6 The time domain signal or frequency domain signal is down-converted and then filtered by an adjustable filter. In this case, the operating frequency of the adjustable filter will be relatively low, and the signal needs to be notched within the entire available bandwidth, which is difficult to achieve. Therefore, Figure 8 In the process, the position of the adjustable filter is adjusted to before down-conversion, and the adjustable filter is controlled to filter first, so that the notch filter in the high frequency band is easier to implement and the filtering effect is better. This can further improve the interference detection effect, thereby improving the communication rate and communication quality of the communication equipment.

[0094] For example, Fig. 9 As shown, the filter input end of the configurable notch filter 24 can be connected to the input end of the down-conversion module 12 of the receiving channel, and are jointly connected to the RF transceiver interface of the RF front-end module 11 in the RF channel.

[0095] For example, based on Figure 7 or Fig. 9 For time-division communication systems and frequency-division communication systems, when receiving signals, the synchronization controller 26 controls the configurable notch filter 24 in the RX time slot to form a notch filter at the current receiving frequency, and the filtered signal is sent back to detect noise energy. For frequency-division communication systems, when sending signals, the transmission channel sends useful signals outward, and the synchronization controller 26 controls the configurable notch filter 24 in the TX time slot to form a notch filter at the current transmitting frequency to filter out the signal leaked from TX. After filtering out the leaked signal, the remaining noise signal is sent to the automatic gain control module 25 to adjust the gain, and provided to the interference detection module 15 to detect the noise energy. Since the notch filter is performed at the current receiving frequency or the current transmitting frequency, the noise energy changes. The interference detection module 15 abandons the noise detection value of the frequency close to the current receiving frequency or the current transmitting frequency, or directly does not perform interference detection at the frequency close to the current receiving frequency or the current transmitting frequency.

[0096] The present application embodiment provides a communication device, such as Fig.10As shown, the communication device 2 includes: a communication path 300 and an interference detection path 400; wherein the communication path 300 includes: a first radio frequency channel 301; the interference detection path 400 includes: a second radio frequency channel 401, an adjustable filter 402, a gain control module 403, a synchronization module 404 and an interference detection module 405;

[0097] The communication path 300 is used to send or receive signals on a current channel at a current communication frequency based on a first radio frequency channel 301;

[0098] The second radio frequency channel 401 is used to receive signals on the current channel;

[0099] The synchronization module 404 is used to control the adjustable filter 402 to filter the signal received by the second radio frequency channel 401 to filter out the signal of the current communication frequency and determine the initial interference signal when the communication path 300 sends or receives the signal;

[0100] The gain control module 403 is used to adjust the gain based on the initial interference signal according to the reference signal strength corresponding to the interference detection module 405 to determine the interference signal;

[0101] The interference detection module 405 is used to detect the interference signal and determine the interference signal strength corresponding to the current channel.

[0102] In an embodiment of the present application, both the communication path and the interference detection path include radio frequency channels, wherein the first radio frequency channel in the communication path is used to send and receive signals; and the second radio frequency channel in the interference detection path is used to receive or monitor signals in the current channel for interference detection.

[0103] In an embodiment of the present application, a synchronization module in an interference detection path is connected to a communication path, and can be synchronized with the signal receiving and transmitting timing and receiving and transmitting frequency of the communication path. In this way, when the communication path sends or receives signals, the synchronization module controls the adjustable filter to filter based on the signal received by the second RF channel. Here, the signal received based on the second RF channel may include: in a time division system or a frequency division system, when the communication path receives signals, the useful signal and the interference signal in the current channel received by the second RF channel; or, in a time division system or a frequency division system, when the communication path sends signals, the interference signal in the current channel received by the second RF channel, and the signal leaked to the second RF channel when the communication path sends signals. The synchronization module controls the adjustable filter to filter the signals in the above situation, filter out the signal on the current communication frequency, and determine the initial interference signal.

[0104] In some embodiments, due to filtering at the current communication frequency, the noise energy changes. The interference detection module is also used to determine from the interference signal, a first interference signal whose frequency difference with the current communication frequency is less than a preset frequency difference threshold; when detecting the interference signal, the first interference signal is not detected, or the signal strength corresponding to the first interference signal is removed from the signal strength corresponding to the interference signal to determine the interference signal strength corresponding to the current channel.

[0105] In the embodiment of the present application, the interference detection path is separated from the radio frequency channel of the communication path. Thus, even when the time division system is in the signal sending state, the interference detection path can normally receive the interference signal through its own radio frequency channel for detection.

[0106] It can be understood that since the interference detection path includes the second RF channel, for the signal sending stage of the time division system, the interference detection path can monitor the interference signal in the current channel through the second RF channel when the signal is sent on the first RF channel, thereby realizing that in the time division and frequency division systems, each stage of signal sending and receiving can perform interference detection in real time and in parallel, thereby improving the flexibility and accuracy of interference detection, and further improving the communication speed and communication quality of the communication equipment.

[0107] In some embodiments, based on Fig.10 ,like Fig.11 As shown, the interference detection path 400 further includes: a second frequency conversion module 406; an input end of the second frequency conversion module 406 is connected to an output end of the second RF channel 401; an output end of the second frequency conversion module 406 is connected to an input end of the adjustable filter 402;

[0108] A second frequency conversion module 406, configured to down-convert the signal received by the second RF channel 401 to determine a first down-converted signal;

[0109] The adjustable filter 402 is further used to filter the first frequency-reduced signal, filter out the signal of the current communication frequency in the first frequency-reduced signal, and determine the initial interference signal;

[0110] The gain control module 403 is further used to adjust the gain of the initial interference signal to determine the interference signal.

[0111] In some embodiments, the second frequency conversion module may include a down-conversion module. Here, the second frequency conversion module down-converts the signal received by the second RF channel to determine the first down-conversion signal, which is consistent with the description of the process of the first frequency conversion module determining the initial signal by down-conversion in the aforementioned embodiment, and is not repeated here.

[0112] In the embodiment of the present application, a down-conversion module is added to the interference detection path, which further separates the interference detection path and the communication path, is more conducive to the parallel operation of signal communication and interference detection, improves the real-time and accuracy of interference detection, and improves the communication speed and communication quality of the communication equipment.

[0113] In some embodiments, based on Fig.10 ,like Fig.12 As shown, the interference detection path also includes: a second frequency conversion module 406; the input end of the adjustable filter 402 is connected to the output end of the second RF channel 401; the output end of the adjustable filter 402 is connected to the input end of the second frequency conversion module 406; the output end of the second frequency conversion module 406 is connected to the input end of the gain control module 403;

[0114] The adjustable filter 402 is further used to filter the signal received by the second radio frequency channel 401, filter out the signal of the current communication frequency in the signal received by the second radio frequency channel 401, and determine the initial interference signal;

[0115] The second frequency conversion module 406 is used to down-convert the initial interference signal to determine a second down-converted signal;

[0116] The gain control module 403 is further configured to adjust the gain of the second down-converted signal to determine the interference signal.

[0117] In the present application embodiment, relative to Fig.11 In the interference detection path, the position of the adjustable filter is adjusted to before the second frequency conversion module for down-conversion, and the adjustable filter is controlled to filter first, so that the notch filter in the high frequency band is easier to implement and the filtering effect is better. This can further improve the interference detection effect, thereby improving the communication rate and communication quality of the communication equipment.

[0118] In some embodiments, the first RF channel includes: a first antenna and a first RF module; the second RF channel includes: a second antenna and a second RF module.

[0119] In the embodiment of the present application, the first RF channel and the second RF channel may include independent antennas and RF modules, wherein the RF module is used to filter the signals received and sent by the antenna connected thereto and adjust the signal bandwidth, power, etc. Fig.11 , the first antenna can be Fig.13 As shown in the antenna 31 in FIG. 1 , the first RF module may include a RF front-end module 11 and a front-end filter 10. The second antenna may be as shown in FIG. Fig.13 As shown in the antenna 30 in FIG. 1 , the second RF module may include a RF front-end module 27 and a front-end filter 28. Fig.13, adjusting the positions of the down-conversion module 29 and the configurable notch filter 24, the communication device provided in the embodiment of the present application can also be as follows Fig.14 shown.

[0120] In some embodiments, the first RF channel includes: a first RF module; the second RF channel includes: a second RF module; the first RF module and the second RF module are connected to a power divider of the communication device; and the power divider is connected to an antenna of the communication device.

[0121] In the embodiment of the present application, a power splitter may be added to the communication device to distribute signals between the first radio frequency channel and the second radio frequency channel. In this way, the radio frequency channels for signal communication and interference detection can be separated based on one antenna. For example, Fig.15 and Fig.16 shown.

[0122] It is understandable that the communication device of the embodiment of the present application can truly detect noise within the communication frequency range, and even interference within a few milliseconds or intermittent interference can be detected immediately. In this way, the communication device can react quickly to avoid interference, greatly improve the communication rate of the communication device, effectively improve the wireless communication experience, and achieve stable experience of high-definition or lossless audio such as Bluetooth high-speed transmission.

[0123] The present application embodiment provides an interference detection method, which is applied to Figure 3-Figure 9 Any communication device shown in . The communication device comprises: a communication path and an interference detection path; wherein the interference detection path comprises: an adjustable filter, a gain control module, a synchronization module and an interference detection module; the filter input end of the adjustable filter is connected to the communication path. Fig.17 As shown, the interference detection method includes:

[0124] S101. Send or receive a signal through a communication path, on a current channel, and at a current communication frequency.

[0125] S102, through the synchronization module, when the signal is sent or received, controlling the adjustable filter to filter the initial signal arriving at the filter input end, filtering out the signal of the current communication frequency in the initial signal, and determining the initial interference signal.

[0126] S103: Using the gain control module, according to the reference signal strength corresponding to the interference detection module, adjust the gain of the initial interference signal to determine the interference signal.

[0127] S104: Detect the interference signal through the interference detection module to determine the interference signal strength corresponding to the current channel.

[0128] In some embodiments, the communication path includes: a receiving channel; the filter input end is connected to the receiving channel; the current communication frequency includes: a current receiving frequency; the method further includes:

[0129] Determine the initial signal based on the received time domain signal or frequency domain signal through the receiving channel;

[0130] The method of controlling the adjustable filter to filter the initial signal arriving at the filter input terminal, filtering out the signal of the current communication frequency in the initial signal, and determining the initial interference signal by the synchronization module when the signal is sent or received includes:

[0131] The synchronization module controls the adjustable filter to filter the initial signal in the receiving time slot of the receiving channel, removes the signal of the current receiving frequency in the initial signal, and determines the initial interference signal.

[0132] In some embodiments, the communication path includes: a radio frequency channel, a receiving channel and a transmitting channel; the filter input end is connected to the receiving channel; the output end of the transmitting channel and the input end of the receiving channel are connected to the radio frequency transceiver interface of the radio frequency channel; the current communication frequency includes: the current transmitting frequency; the method further includes:

[0133] Determine the initial signal through a receiving channel based on a frequency domain signal output from the transmitting channel to the radio frequency transceiver interface and entering the receiving channel;

[0134] The method of controlling the adjustable filter to filter the initial signal arriving at the filter input terminal, filtering out the signal of the current communication frequency in the initial signal, and determining the initial interference signal by the synchronization module when the signal is sent or received includes:

[0135] The adjustable filter is controlled to filter the initial signal in the transmission time slot of the transmission channel through the synchronization module, and the signal of the current transmission frequency in the initial signal is filtered out to determine the initial interference signal.

[0136] In some embodiments, the receiving channel includes: a first frequency conversion module; an input end of the first frequency conversion module is connected to a radio frequency transceiver interface of a radio frequency channel in the communication path; the filter input end is connected to an output end of the first frequency conversion module;

[0137] The determining the initial signal through the receiving channel based on the received time domain signal or frequency domain signal includes:

[0138] Down-converting the time domain signal or the frequency domain signal received by the receiving channel through the first frequency conversion module to determine the initial signal;

[0139] The determining the initial signal through the receiving channel based on the frequency domain signal output from the sending channel to the radio frequency transceiver interface and entering the receiving channel includes:

[0140] The frequency domain signal output from the transmitting channel to the RF transceiver interface and entering the receiving channel is down-converted to determine the initial signal.

[0141] In some embodiments, the receiving channel includes: a first frequency conversion module; an input end of the first frequency conversion module and the filter input end are connected to a radio frequency transceiver interface of a radio frequency channel in the communication path.

[0142] In some embodiments, the detecting the interference signal to determine the interference signal strength corresponding to the current channel includes:

[0143] Determine, from the interference signals, a first interference signal whose frequency difference from the current communication frequency is less than a preset frequency difference threshold;

[0144] When detecting the interference signal, the first interference signal is not detected, or the signal strength corresponding to the first interference signal is removed from the signal strength corresponding to the interference signal to determine the interference signal strength corresponding to the current channel.

[0145] It should be noted that the description of the above method embodiment is similar to the description of the above communication device embodiment corresponding to it, and has similar beneficial effects as the corresponding communication device embodiment. For technical details not disclosed in the method embodiment of the present application, please refer to the description of the corresponding communication device embodiment of the present application for understanding.

[0146] The present application embodiment provides an interference detection method, which is applied to Figure 10-Figure 16 The communication device includes: a communication path and an interference detection path; wherein the communication path includes: a first radio frequency channel; the interference detection path includes: a second radio frequency channel, an adjustable filter, a gain control module, a synchronization module and an interference detection module; Fig.18 As shown, the interference detection method includes:

[0147] S201. Send or receive a signal at a current communication frequency on a current channel based on a first radio frequency channel through a communication path.

[0148] S202: Receive a signal on the current channel through a second radio frequency channel.

[0149] S203. When sending or receiving a signal in the communication path, the synchronizing module controls the adjustable filter to filter the signal received by the second radio frequency channel, removes the signal of the current communication frequency, and determines the initial interference signal.

[0150] S204: Perform gain adjustment based on the initial interference signal through the gain control module according to the reference signal strength corresponding to the interference detection module to determine the interference signal.

[0151] S205: Detect the interference signal through the interference detection module to determine the interference signal strength corresponding to the current channel.

[0152] In some embodiments, the interference detection path further includes: a second frequency conversion module; an input end of the second frequency conversion module is connected to an output end of the second RF channel; an output end of the second frequency conversion module is connected to an input end of the tunable filter; and the method further includes:

[0153] Down-converting the signal received by the second radio frequency channel through the second frequency conversion module to determine a first down-converted signal;

[0154] When the communication path sends or receives a signal, controlling the adjustable filter to filter based on the signal received by the second radio frequency channel, filtering out the signal of the current communication frequency, and determining the initial interference signal, includes:

[0155] When the communication path is sending or receiving a signal, controlling the adjustable filter to filter the first frequency reduction signal, filtering out the signal of the current communication frequency in the first frequency reduction signal, and determining the initial interference signal;

[0156] The step of determining the interference signal by adjusting the gain based on the initial interference signal according to the reference signal strength corresponding to the interference detection module through the gain control module includes:

[0157] The gain control module is used to adjust the gain of the initial interference signal to determine the interference signal.

[0158] In some embodiments, the interference detection path further includes: a second frequency conversion module; the input end of the tunable filter is connected to the output end of the second RF channel; the output end of the tunable filter is connected to the input end of the second frequency conversion module; the output end of the second frequency conversion module is connected to the input end of the gain control module;

[0159] When the communication path sends or receives a signal, controlling the adjustable filter to filter based on the signal received by the second radio frequency channel, filtering out the signal of the current communication frequency, and determining the initial interference signal, includes:

[0160] When the communication path is sending or receiving a signal, controlling the adjustable filter to filter the signal received by the second radio frequency channel, filtering out the signal of the current communication frequency in the signal received by the second radio frequency channel, and determining the initial interference signal;

[0161] The method further comprises:

[0162] Down-converting the initial interference signal through the second frequency conversion module to determine a second down-converted signal;

[0163] The step of determining the interference signal by adjusting the gain based on the initial interference signal according to the reference signal strength corresponding to the interference detection module through the gain control module includes:

[0164] The gain control module is used to adjust the gain of the second frequency reduction signal to determine the interference signal.

[0165] In some embodiments, the first RF channel includes: a first antenna and a first RF module; the second RF channel includes: a second antenna and a second RF module.

[0166] In some embodiments, the first RF channel includes: a first RF module; the second RF channel includes: a second RF module; the first RF module and the second RF module are connected to a power divider of the communication device; and the power divider is connected to an antenna of the communication device.

[0167] In some embodiments, the detecting the interference signal to determine the interference signal strength corresponding to the current channel includes:

[0168] Determine, from the interference signals, a first interference signal whose frequency difference from the current communication frequency is less than a preset frequency difference threshold;

[0169] When detecting the interference signal, the first interference signal is not detected, or the signal strength corresponding to the first interference signal is removed from the signal strength corresponding to the interference signal to determine the interference signal strength corresponding to the current channel.

[0170] It should be noted that the description of the above method embodiment is similar to the description of the above communication device embodiment corresponding to it, and has similar beneficial effects as the corresponding communication device embodiment. For technical details not disclosed in the method embodiment of the present application, please refer to the description of the corresponding communication device embodiment of the present application for understanding.

[0171] An embodiment of the present application provides a computer-readable storage medium storing executable instructions, wherein executable instructions are stored. When the executable instructions are executed by a processor in a communication device provided by the embodiment of the present application, the processor will execute the interference detection method provided by the embodiment of the present application.

[0172] In some embodiments, the computer-readable storage medium may be a memory such as FRAM, ROM, PROM, EPROM, EEPROM, flash memory, magnetic surface storage, optical disk, or CD-ROM; or it may be various devices including one or any combination of the above memories.

[0173] In some embodiments, executable instructions may be in the form of a program, software, software module, script or code, written in any form of programming language (including compiled or interpreted languages, or declarative or procedural languages), and may be deployed in any form, including as a stand-alone program or as a module, component, subroutine or other unit suitable for use in a computing environment.

[0174] As an example, executable instructions may, but need not, correspond to a file in a file system, may be stored as part of a file that stores other programs or data, such as in one or more scripts in a HyperText Markup Language (HTML) document, in a single file dedicated to the program in question, or in multiple coordinated files (e.g., files storing one or more modules, subroutines, or code portions).

[0175] By way of example, executable instructions may be deployed to be executed on one computing device, or on multiple computing devices located at one site, or on multiple computing devices distributed across multiple sites and interconnected by a communication network.

[0176] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of hardware embodiments, software embodiments, or embodiments in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) that contain computer-usable program code.

[0177] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0178] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0179] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0180] The above is only a preferred embodiment of the present application and is not intended to limit the protection scope of the present application. Any modifications, equivalent substitutions and improvements made within the spirit and scope of the present application are included in the protection scope of the present application.

Claims

1. A communication device, characterized in that: include: A communication path and an interference detection path; wherein the interference detection path comprises: an adjustable filter, a gain control module, a synchronization module and an interference detection module; the filter input end of the adjustable filter is connected to the communication path; The communication path is used to send or receive signals on the current channel and at the current communication frequency; The synchronization module is used to control the adjustable filter to filter the initial signal arriving at the filter input end when the signal is sent or received, filter out the signal of the current communication frequency in the initial signal, and determine the initial interference signal; The gain control module is used to adjust the gain of the initial interference signal according to the reference signal strength corresponding to the interference detection module to determine the interference signal; The interference detection module is used to detect the interference signal and determine the interference signal strength corresponding to the current channel.

2. The communication device according to claim 1, characterized in that The communication path includes: a receiving channel; the filter input end is connected to the receiving channel; the current communication frequency includes: a current receiving frequency; The receiving channel is used to determine the initial signal based on the received time domain signal or frequency domain signal; The synchronization module is further used to control the adjustable filter to filter the initial signal in the receiving time slot of the receiving channel, filter out the signal of the current receiving frequency in the initial signal, and determine the initial interference signal.

3. The communication device according to claim 1, characterized in that The communication path includes: a radio frequency channel, a receiving channel and a transmitting channel; the filter input end is connected to the receiving channel; the output end of the transmitting channel and the input end of the receiving channel are connected to the radio frequency transceiver interface of the radio frequency channel; the current communication frequency includes: the current transmitting frequency; The receiving channel is used to determine the initial signal based on the frequency domain signal output from the sending channel to the radio frequency transceiver interface and entering the receiving channel; The synchronization module is further used to control the adjustable filter to filter the initial signal in the transmission time slot of the transmission channel, filter out the signal of the current transmission frequency in the initial signal, and determine the initial interference signal.

4. The communication device according to claim 2 or 3, characterized in that: The receiving channel comprises: a first frequency conversion module; an input end of the first frequency conversion module is connected to a radio frequency transceiver interface of a radio frequency channel in the communication path; and the filter input end is connected to an output end of the first frequency conversion module; The first frequency conversion module is used to down-convert the time domain signal or the frequency domain signal received by the receiving channel to determine the initial signal; or Down-converting the frequency domain signal output from the transmitting channel to the radio frequency transceiver interface and entering the receiving channel to determine the initial signal.

5. The communication device according to claim 2 or 3, characterized in that: The receiving channel includes: a first frequency conversion module; an input end of the first frequency conversion module and the filter input end are connected to a radio frequency transceiver interface of a radio frequency channel in the communication path.

6. The communication device according to any one of claims 1 to 3, characterized in that: The interference detection module is further used to determine, from the interference signals, a first interference signal whose frequency difference with the current communication frequency is less than a preset frequency difference threshold; When detecting the interference signal, the first interference signal is not detected, or the signal strength corresponding to the first interference signal is removed from the signal strength corresponding to the interference signal to determine the interference signal strength corresponding to the current channel.

7. A communication device, characterized in that: include: A communication path and an interference detection path; wherein the communication path includes: a first radio frequency channel; the interference detection path includes: a second radio frequency channel, an adjustable filter, a gain control module, a synchronization module and an interference detection module; The communication path is used to send or receive signals at a current communication frequency on a current channel based on the first radio frequency channel; The second radio frequency channel is used to receive signals on the current channel; The synchronization module is used to control the adjustable filter to filter the signal received by the second radio frequency channel to filter out the signal of the current communication frequency and determine the initial interference signal when the communication path sends or receives a signal; The gain control module is used to perform gain adjustment based on the initial interference signal according to the reference signal strength corresponding to the interference detection module to determine the interference signal; The interference detection module is used to detect the interference signal and determine the interference signal strength corresponding to the current channel.

8. The communication device according to claim 7, characterized in that: The interference detection path further includes: a second frequency conversion module; an input end of the second frequency conversion module is connected to an output end of the second RF channel; an output end of the second frequency conversion module is connected to an input end of the tunable filter; The second frequency conversion module is used to down-convert the signal received by the second radio frequency channel to determine a first down-converted signal; The adjustable filter is further used to filter the first frequency reduction signal, filter out the signal of the current communication frequency in the first frequency reduction signal, and determine the initial interference signal; The gain control module is further used to perform gain adjustment on the initial interference signal to determine the interference signal.

9. The communication device according to claim 7, characterized in that: The interference detection path further includes: a second frequency conversion module; the input end of the tunable filter is connected to the output end of the second RF channel; the output end of the tunable filter is connected to the input end of the second frequency conversion module; the output end of the second frequency conversion module is connected to the input end of the gain control module; The adjustable filter is further used to filter the signal received by the second radio frequency channel, filter out the signal of the current communication frequency in the signal received by the second radio frequency channel, and determine the initial interference signal; The second frequency conversion module is used to down-convert the initial interference signal to determine a second down-conversion signal; The gain control module is further used to adjust the gain of the second frequency reduction signal to determine the interference signal.

10. The communication device according to any one of claims 7 to 9, characterized in that: The first radio frequency channel includes: a first antenna and a first radio frequency module; the second radio frequency channel includes: a second antenna and a second radio frequency module.

11. The communication device according to any one of claims 7 to 9, characterized in that: The first RF channel includes: a first RF module; the second RF channel includes: a second RF module; the first RF module and the second RF module are connected to a power divider of the communication device; and the power divider is connected to an antenna of the communication device.

12. The communication device according to any one of claims 1 to 3, characterized in that: The interference detection module is further used to determine, from the interference signals, a first interference signal whose frequency difference with the current communication frequency is less than a preset frequency difference threshold; When detecting the interference signal, the first interference signal is not detected, or the signal strength corresponding to the first interference signal is removed from the signal strength corresponding to the interference signal to determine the interference signal strength corresponding to the current channel.

13. An interference detection method, characterized in that: Applied to the communication device according to any one of claims 1 to 6; the method comprising: Send or receive a signal through a communication path on a current channel at a current communication frequency; By means of the synchronization module, when a signal is sent or received, the adjustable filter is controlled to filter the initial signal arriving at the filter input end, the signal of the current communication frequency in the initial signal is filtered out, and an initial interference signal is determined; By means of a gain control module, the initial interference signal is gain-adjusted according to the reference signal strength corresponding to the interference detection module to determine the interference signal; The interference signal is detected by an interference detection module to determine the interference signal strength corresponding to the current channel.

14. An interference detection method, characterized in that: Applied to the communication device according to any one of claims 7 to 12; the method comprising: Sending or receiving a signal at a current communication frequency on a current channel based on a first radio frequency channel through a communication path; receiving a signal on the current channel through a second radio frequency channel; By means of the synchronization module, when the communication path is sending or receiving a signal, the adjustable filter is controlled to filter based on the signal received by the second radio frequency channel, to filter out the signal of the current communication frequency, and to determine an initial interference signal; By means of a gain control module, according to the reference signal strength corresponding to the interference detection module, a gain adjustment is performed based on the initial interference signal to determine the interference signal; The interference signal is detected by an interference detection module to determine the interference signal strength corresponding to the current channel.

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