A frequency hopping communication method based on active electromagnetic interference

Abstract

The application discloses a frequency hopping communication method based on active electromagnetic interference, and the real-time self-organizing communication method comprises a frequency hopping communication mode based on external electromagnetic interference sensing and a frequency hopping communication mode based on active electromagnetic interference. The frequency hopping communication mode based on external electromagnetic interference sensing can monitor a space spectrum in real time under a complex electromagnetic environment and in the presence of interference signals, and can actively switch communication frequency bands and bandwidths according to a spectrum environment. The frequency hopping communication mode based on active electromagnetic interference can switch communication frequency bands and bandwidths in real time according to a communication control sequence code, and can emit interference signals with spectrum gaps to shield the rest of the frequency bands. The frequency hopping communication mode based on external electromagnetic interference sensing can improve the anti-interference performance, spectrum utilization and communication rate of a radio frequency transceiving system, and the frequency hopping communication mode based on active electromagnetic interference can improve the anti-interference ability and communication confidentiality of the radio frequency transceiving system.

Description

Technical Field

[0001] This invention belongs to the field of wireless communication and electronic science and technology, and relates to a frequency hopping communication method based on active electromagnetic interference. Background Technology

[0002] In recent years, technologies such as wireless mobile communication, millimeter-wave radar, and electronic countermeasures have developed rapidly, leading to the increasing use of spectrum resources. The coexistence of multiple wireless communication systems has resulted in spectrum congestion, which severely impacts the communication efficiency and quality of transceivers. Simultaneously, with advancements in semiconductor technology, mobile terminals are increasingly evolving towards universality and multi-functional integration, compatible with various functions such as communication, radar, and electronic countermeasures. To ensure transceivers can operate simultaneously across multiple frequency bands in a wide spectrum area and function normally in complex electromagnetic environments, self-organizing optimization technology has become a key technology in RF transceiver design.

[0003] Self-organizing optimization technology monitors the electromagnetic environment and automatically adjusts the transceiver's system structure and parameters in real time based on changes in the spectral environment, ensuring the transceiver system operates at its optimal state. Traditional self-organizing optimization mechanisms monitor and track interference signal frequencies using interference signal monitoring circuits, adjust adjustable anti-interference circuit network parameters based on the monitoring results, and eliminate interference signals in the receiving link to achieve self-organizing optimization. This mechanism is typically designed for narrowband interference signals and cannot meet the needs of transceivers operating simultaneously across multiple frequency bands over a wide frequency range or in complex electromagnetic environments.

[0004] The invention patent "An Adaptive Anti-interference Circuit" (CN111988033A, 2020.11.24) describes an adaptive anti-interference circuit, which includes an adjustable anti-interference circuit and an interference signal monitoring circuit. It utilizes the frequency-locked loop characteristic to monitor and track interference signals and controls the adjustable anti-interference circuit network to achieve adaptive anti-interference. However, due to the bandwidth limitation of the adjustable anti-interference circuit network, the adaptive anti-interference circuit can only eliminate narrowband interference signals in a fixed frequency band at any given time, and cannot meet the transceiver self-organization optimization requirements over a wide frequency range.

[0005] In addition, traditional frequency hopping technology is limited by the communication protocol in terms of frequency hopping range, and the communication frequency band is randomly changed by pseudo-random code control. Furthermore, it cannot actively avoid interference, thus limiting its communication confidentiality and anti-interference capabilities. Summary of the Invention

[0006] Purpose of the Invention: The purpose of this invention is to provide a frequency-hopping communication system and method based on electromagnetic interference, to solve the problem that traditional technologies struggle to improve anti-interference capabilities, communication rates, and communication security in wide frequency ranges and complex electromagnetic environments. This system, based on an external electromagnetic interference sensing frequency-hopping communication mode, monitors the spatial spectrum in real time and actively switches communication frequency bands and bandwidths according to the spectral environment, achieving active frequency-hopping communication based on electromagnetic environment sensing. This overcomes the limitation of existing adaptive anti-interference technologies, which can only track and eliminate narrowband interference signals. Furthermore, based on an active electromagnetic interference frequency-hopping communication mode, the system switches communication frequency bands and bandwidths in real time according to communication control sequence codes and transmits interference signals with spectral gaps to shield other frequency bands, thereby improving the anti-interference capability and communication security of the RF transceiver system.

[0007] Technical Solution: To solve the above problems, this invention proposes a frequency-hopping communication method based on external electromagnetic interference, which includes the following steps:

[0008] Step 1: Receive radio frequency signals in the electromagnetic environment;

[0009] Step 2: Analyze and obtain the spectral information of the radio frequency signal;

[0010] Step 3: Receive and store the spectrum information of the received signal using a memory;

[0011] Step 4: Determine whether the communication frequency band of the current transmission signal is congested or subject to strong electromagnetic interference. If so, switch the communication frequency band to an idle frequency band.

[0012] Preferably, the spectrum information is obtained by performing a Fast Fourier Transform (FFT) on the received radio frequency signal.

[0013] Preferably, the method for determining whether the communication frequency band spectrum of the current transmitted signal is crowded or has strong electromagnetic interference is as follows: if the power spectral density of the interference signal in the current communication frequency band is greater than the interference suppression threshold of the receiver, it is determined that the current communication frequency band spectrum is crowded or has strong electromagnetic interference.

[0014] This invention also proposes a frequency-hopping communication method based on active electromagnetic interference, which includes the following steps:

[0015] Step 1: The sequence code generator of wireless terminal A generates interference control sequence code and communication control sequence code;

[0016] Step 2: Wireless terminal A and wireless terminal B establish a handshake communication. Wireless terminal A sends the interference control sequence code and communication control sequence code it generates to wireless terminal B.

[0017] Step 3: Select a preset frequency band as the communication frequency band for wireless terminal A and wireless terminal B. The transmitter in wireless terminal A transmits an interference signal with a preset spectrum and preset power. The remaining frequency bands, except for the communication frequency band, are shielded using the interference signal as shielded frequency bands. The center frequency and bandwidth of the spectral gaps in the interference signal change in real time according to the timing of the interference control sequence code.

[0018] Step 4: The transmitter in wireless terminal A transmits a preset signal within the spectral gap of the interference signal, and the receiver in wireless terminal B receives the preset signal transmitted by wireless terminal A within the spectral gap of the interference signal; the center frequency and bandwidth of the communication bands of wireless terminal A and wireless terminal B change in real time according to the timing of the communication control sequence code.

[0019] Preferably, the process in step 2 where wireless terminal A sends the generated interference control sequence code and communication control sequence code to wireless terminal B includes the following steps:

[0020] Step 2-1: Wireless terminal B generates a key pair, which includes a public key and a private key. Wireless terminal B sends the generated public key to wireless terminal A.

[0021] Step 2-2: Wireless terminal A uses the public key sent by wireless terminal B to encrypt the interference control sequence code and communication control sequence code generated by wireless terminal A;

[0022] Steps 2-3: Wireless terminal A sends the encrypted interference control sequence code and communication control sequence code to wireless terminal B;

[0023] Steps 2-4: Wireless terminal B receives the public key encrypted interference control sequence code and communication control sequence code sent by wireless terminal A, and uses the private key to decrypt the data to obtain the interference control sequence code and communication control sequence code of wireless terminal A.

[0024] This invention also proposes a frequency-hopping communication system based on electromagnetic interference, including a transceiver unit, a monitoring unit, a control unit, and a baseband processing unit;

[0025] The monitoring unit includes an observation receiver and a spectrum analysis module. The monitoring unit is connected to the control unit. The monitoring unit is used to monitor the electromagnetic environment in real time, analyze spectrum usage and electromagnetic interference, and feed back to the control unit.

[0026] The control unit is connected to the transceiver unit and the baseband processing unit respectively, and is used to adjust the bandwidth of the baseband processing unit and the operating frequency band and bandwidth of the transceiver unit;

[0027] The transceiver unit includes a multi-functional radio frequency receiver, a multi-functional radio frequency transmitter, and a local oscillator signal generation circuit, used for receiving and transmitting radio signals;

[0028] The control unit includes an adjustment module and a control module.

[0029] Preferably, the control module includes a memory, an arithmetic unit, a sequence code generator, a logic controller, and a bus;

[0030] Memory, used to store spectral information and self-organizing optimization algorithms in the space;

[0031] The arithmetic unit is used to analyze spectral information and run corresponding self-organizing optimization algorithms to generate adjustment commands;

[0032] Sequence code generator, used to generate interference control sequence codes and communication control sequence codes;

[0033] The logic controller is used to decode the interference control sequence code, the communication control sequence code, and the adjustment instructions generated by the arithmetic unit.

[0034] The bus is used to connect the memory, arithmetic unit, sequence code generator and logic controller to realize information transmission and interaction between the memory, arithmetic unit, sequence code generator and logic controller;

[0035] The adjustment module includes a switch or switch array network, as well as one or more combinations of a tuning network, a resistor network, a transmission line network, and a transformer network, for adjusting the center frequency and bandwidth of the communication band and the center frequency and bandwidth of the interference signal spectrum gaps.

[0036] Preferably, the multifunctional RF receiver includes a low-noise amplifier, a down-conversion mixer, a receiver programmable gain amplifier, a receiver filter, and an analog-to-digital converter; the low-noise amplifier receives RF input signals at its input terminal and its output terminal is connected to the RF input terminal of the down-conversion mixer; the output terminal of the local oscillator signal generation circuit is connected to the local oscillator input terminal of the down-conversion mixer; the output terminal of the down-conversion mixer is connected to the input terminal of the programmable gain amplifier; the output terminal of the programmable gain amplifier is connected to the input terminal of the receiver filter; the output terminal of the receiver filter is connected to the input terminal of the analog-to-digital converter; and the analog-to-digital converter outputs digital signals.

[0037] The multifunctional RF transmitter includes a digital-to-analog converter (DAC), a transmitter filter, a transmitter programmable gain amplifier (PGA), an up-converter mixer, and a power amplifier. The input of the DAC is connected to the output of the baseband processing unit, the output of the DAC is connected to the input of the transmitter filter, the output of the transmitter filter is connected to the input of the transmitter PGA, the output of the transmitter PGA is connected to the intermediate frequency (IF) input of the up-converter mixer, the output of the local oscillator signal generation circuit is connected to the local oscillator input of the up-converter mixer, and the output of the up-converter mixer is connected to the input of the power amplifier. The power amplifier outputs an RF signal.

[0038] Preferably, the transceiver unit has one or more combined functions such as communication, radar, tracking, navigation, and electronic countermeasures, and its operating frequency band includes one or more frequency bands such as radio frequency, microwave, millimeter wave, and submillimeter wave.

[0039] Beneficial effects: Compared with the prior art, the technical solution of the present invention has the following beneficial technical effects:

[0040] (1) Compared with the prior art, the real-time self-organizing communication method and RF transceiver system of the present invention can be used simultaneously in different frequency bands over a wide frequency range and in complex electromagnetic environments. Based on the frequency hopping communication mode of external electromagnetic interference perception, it can monitor and judge the spectrum environment in real time, realize active frequency hopping communication, and solve the problem that traditional adaptive anti-interference schemes can only track and eliminate narrowband interference signals and cannot adapt to complex spectrum environments. Based on the frequency hopping communication mode of active electromagnetic interference, the communication frequency band and bandwidth are switched in real time according to the communication control sequence code, and interference signals with spectrum gaps are emitted to shield the other frequency bands, thereby improving the anti-interference capability and communication confidentiality of the RF transceiver system. The real-time self-organizing optimized RF transceiver system and method of the present invention can be widely applied to scenarios with dynamic changes in interference signals such as mobile communication, radar, and electronic countermeasures, and can realize the self-organizing optimization of transceivers in multi-functional integrated application scenarios such as communication, radar, and electronic countermeasures.

[0041] (2) This invention provides a frequency-hopping communication method based on external electromagnetic interference. It uses an electromagnetic environment monitoring unit to monitor the spectrum environment in real time. Based on the judgment of spectrum usage, it utilizes idle frequency bands that change in real time under a wide spectrum coverage environment for communication, achieving active frequency hopping based on electromagnetic environment awareness. Furthermore, the frequency hopping range breaks through the limitations of traditional protocols, realizing full-band frequency hopping. Compared with existing adaptive anti-interference technologies and frequency hopping technologies, the frequency-hopping communication method based on electromagnetic environment awareness of this invention has stronger anti-interference performance, higher spectrum utilization, and higher communication rate under a wide spectrum coverage environment.

[0042] (3) The frequency hopping communication method based on active electromagnetic interference of the present invention generates a wide spectrum interference signal and uses the randomly changing spectrum gaps in the wide spectrum interference signal for communication. The communication frequency band is switched in real time between different spectrum gaps. While actively interfering with the other party's communication frequency band, it realizes secure communication and further improves the electronic countermeasures and secure communication performance of the transceiver system. Attached Figure Description

[0043] Figure 1 This is a functional schematic diagram of two frequency modulation communication methods proposed in this invention.

[0044] Figure 2 This is a flowchart of a frequency hopping communication method based on external electromagnetic interference proposed in this invention.

[0045] Figure 3 This is a flowchart of a frequency hopping communication method based on active electromagnetic interference proposed in this invention.

[0046] Figure 4 This invention proposes a frequency-hopping communication system based on electromagnetic interference.

[0047] Figure 5 This is a structural block diagram of the control unit of a frequency hopping communication system based on electromagnetic interference proposed in this invention.

[0048] Figure 6 This is a structural block diagram of an interference signal transmitter for a frequency hopping communication system based on electromagnetic interference, as proposed in this invention. Detailed Implementation

[0049] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0050] like Figure 1 The diagram shows functional schematics of two frequency modulation communication methods proposed in this invention, which combine electromagnetic interference for real-time self-organized frequency hopping communication. The real-time self-organized communication methods include a frequency hopping communication mode based on external electromagnetic interference sensing and a frequency hopping communication mode based on active electromagnetic interference. The frequency hopping communication mode based on external electromagnetic interference sensing monitors the spatial spectrum in real time under complex electromagnetic environments and the presence of interference signals, and actively switches communication frequency bands and bandwidths according to the spectral environment.

[0051] The frequency hopping communication mode based on active electromagnetic interference switches the communication frequency band and bandwidth in real time according to the communication control sequence code, and transmits interference signals with spectral slots to shield the other frequency bands. The center frequency and bandwidth of the spectral slots are switched in real time according to the interference control sequence code.

[0052] like Figure 2 The diagram shown is a flowchart of a frequency-hopping communication method based on external electromagnetic interference proposed in this invention, which includes the following steps:

[0053] Step 1: Receive radio frequency signals in the electromagnetic environment;

[0054] Step 2: Analyze and obtain the spectral information of the radio frequency signal;

[0055] Step 3: Receive and store the spectrum information of the received signal using a memory;

[0056] Step 4: Determine whether the communication frequency band of the current transmission signal is congested or subject to strong electromagnetic interference. If so, switch the communication frequency band to an idle frequency band.

[0057] The spectrum information is obtained by performing a Fast Fourier Transform (FFT) on the received radio frequency signal.

[0058] The method for determining whether the current frequency band is congested or has strong electromagnetic interference is as follows: if the power spectral density of the interference signal in the current communication frequency band is greater than the interference suppression threshold of the receiver, the current communication frequency band is determined to be congested or has strong electromagnetic interference; otherwise, the current communication frequency band is determined to be an idle frequency band.

[0059] For example, if the radio frequency transceiver system is currently operating in the X band, the system receives radio frequency signals in the electromagnetic environment before the transmitter transmits a useful signal, extracts the spectrum information of the radio frequency signals, and analyzes and determines whether the X band is occupied. If the X band is occupied, the system switches the communication frequency band to the Y band.

[0060] By monitoring the spectrum environment in real time and switching communication frequency bands, active frequency hopping based on electromagnetic environment perception can be achieved, thereby improving spectrum resource utilization, anti-interference performance of the transceiver system, and communication rate.

[0061] like Figure 3 The diagram shows a flowchart of a frequency-hopping communication method based on active electromagnetic interference proposed in this invention, which includes the following steps:

[0062] Step 1: The sequence code generator of wireless terminal A generates interference control sequence code and communication control sequence code;

[0063] Step 2: Wireless terminal A and wireless terminal B establish a handshake communication. Wireless terminal A sends the interference control sequence code and communication control sequence code it generates to wireless terminal B.

[0064] Step 3: Select a preset frequency band as the communication frequency band for wireless terminal A and wireless terminal B. The transmitter in wireless terminal A transmits an interference signal with a preset spectrum and preset power. The remaining frequency bands, except for the communication frequency band, are shielded using the interference signal as shielded frequency bands. The center frequency and bandwidth of the spectral gaps in the interference signal change in real time according to the timing of the interference control sequence code.

[0065] Step 4: The transmitter in wireless terminal A transmits a preset signal within the spectral gap of the interference signal, and the receiver in wireless terminal B receives the preset signal transmitted by wireless terminal A within the spectral gap of the interference signal; the center frequency and bandwidth of the communication bands of wireless terminal A and wireless terminal B change in real time according to the timing of the communication control sequence code.

[0066] Step 2, in which wireless terminal A sends the generated interference control sequence code and communication control sequence code to wireless terminal B, includes the following steps:

[0067] Step 2-1: Wireless terminal B generates a key pair, which includes a public key and a private key. Wireless terminal B sends the generated public key to wireless terminal A.

[0068] Step 2-2: Wireless terminal A uses the public key sent by wireless terminal B to encrypt the interference control sequence code and communication control sequence code generated by wireless terminal A;

[0069] Steps 2-3: Wireless terminal A sends the encrypted interference control sequence code and communication control sequence code to wireless terminal B;

[0070] Steps 2-4: Wireless terminal B receives the public key encrypted interference control sequence code and communication control sequence code sent by wireless terminal A, and uses the private key to decrypt the data to obtain the interference control sequence code and communication control sequence code of wireless terminal A.

[0071] like Figure 4 The diagram shown is a block diagram of a frequency hopping communication system based on electromagnetic interference proposed in this invention.

[0072] The system includes a transceiver unit 101, a baseband processing unit 102, a control unit 103, and a monitoring unit 104; the transceiver unit 101 includes a multi-functional radio frequency receiver 101-1, a multi-functional radio frequency transmitter 101-2, and a local oscillator signal generation circuit 101-3; the control unit 103 includes a control module 103-1 and an adjustment module 103-2; the monitoring unit 104 includes an observation receiver 104-1 and a spectrum analysis module 104-2.

[0073] The monitoring unit 104 is connected to the control unit 103 and is used to monitor the electromagnetic environment in real time, analyze spectrum usage and interference, and provide feedback to the control unit 103. The control unit 103 is connected to the transceiver unit 101 and the baseband processing unit 102 respectively and is used to adjust the bandwidth of the baseband processing unit 102 and the operating frequency band of the transceiver unit 101. The transceiver unit 101 is used to receive and transmit radio signals and has one or more combinations of communication, radar, tracking, navigation and electronic countermeasure functions. The operating frequency band includes one or more frequency bands of radio frequency, microwave, millimeter wave and submillimeter wave.

[0074] Specifically, the multi-functional radio frequency receiver 101-1 includes n radio frequency receiving channels, where n is an integer greater than 1, and each radio frequency receiving channel adopts a multi-band reconfigurable circuit.

[0075] Specifically, the multi-functional radio frequency transmitter 101-2 includes m radio frequency transmission channels, where m is an integer greater than 1, and each radio frequency transmission channel adopts a multi-band reconfigurable circuit.

[0076] Specifically, the local oscillator signal generation circuit 101-3 includes a broadband frequency synthesizer or a combination of multiple frequency synthesizers.

[0077] like Figure 5 The diagram shown is a structural block diagram of the control unit of a frequency hopping communication system based on electromagnetic interference proposed in this invention.

[0078] The control unit 103 includes a control module 103-2 and an adjustment module 103-1;

[0079] The control module 103-2 includes a memory 103-2-1, an arithmetic unit 103-2-2, a sequence code generator 103-2-3, a logic controller 103-2-4, and a bus 103-2-5;

[0080] The memory 103-2-1 is used to store spectrum information and self-organizing optimization algorithms in the storage space;

[0081] The arithmetic unit 103-2-2 is used to analyze spectrum information and run corresponding self-organizing optimization algorithms to generate adjustment instructions;

[0082] The sequence code generator 103-2-3 is used to generate interference control sequence codes and communication control sequence codes;

[0083] The logic controller 103-2-4 is used to decode the interference control sequence code, the communication control sequence code, and the adjustment instructions generated by the arithmetic unit.

[0084] The bus 103-2-5 is used to connect the arithmetic unit, memory, sequence code generator and logic controller to realize information transmission and interaction between the arithmetic unit, memory, sequence code generator and logic controller.

[0085] The adjustment module 103-1 includes a switch or switch array network 103-1-1, and one or more combinations of a tuning network 103-1-2, a resistor network 103-1-3, a transmission line network 103-1-4, and a transformer network 103-1-5, for adjusting the center frequency and bandwidth of the communication frequency band and the center frequency and bandwidth of the interference signal spectrum gap.

[0086] like Figure 6 The diagram shown is a structural block diagram of an interference signal transmitter for a frequency hopping communication system based on electromagnetic interference proposed in this invention.

[0087] The multi-functional radio frequency receiver includes a low-noise amplifier 101-1-1, a down-conversion mixer 101-1-2, a receiver programmable gain amplifier 101-1-3, a receiver filter 101-1-4, and an analog-to-digital converter 101-1-5.

[0088] The low-noise amplifier 101-1-1 receives the radio frequency input signal at its input terminal and its output terminal is connected to the radio frequency input terminal of the downconverter mixer 101-1-2. The output terminal of the local oscillator signal generation circuit 101-3 is connected to the local oscillator input terminal of the downconverter mixer 101-1-2. The output terminal of the downconverter mixer 101-1-2 is connected to the input terminal of the programmable gain amplifier 101-1-3. The output terminal of the programmable gain amplifier 101-1-3 is connected to the input terminal of the receiver filter 101-1-4. The output terminal of the receiver filter 101-1-4 is connected to the input terminal of the analog-to-digital converter 101-1-5. The output terminal of the analog-to-digital converter 101-1-5 is connected to the input terminal of the baseband processing unit 102.

[0089] The multifunctional radio frequency transmitter includes a digital-to-analog converter 101-2-5, a transmitter filter 101-2-4, a transmitter programmable gain amplifier 101-2-3, an upconversion mixer 101-2-2, and a power amplifier 101-2-1.

[0090] The input terminal of the digital-to-analog converter 101-2-5 is connected to the output terminal of the baseband processing unit 102, and the output terminal is connected to the input terminal of the transmitter filter 101-2-4. The output terminal of the transmitter filter 101-2-4 is connected to the input terminal of the transmitter programmable gain amplifier 101-2-3. The output terminal of the transmitter programmable gain amplifier 101-2-3 is connected to the intermediate frequency input terminal of the upconverter mixer 101-2-2. The output terminal of the local oscillator signal generation circuit 101-3 is connected to the local oscillator input terminal of the upconverter mixer 101-2-2. The output terminal of the upconverter mixer 101-2-2 is connected to the input terminal of the power amplifier 101-2-1. The power amplifier 101-2-1 outputs a radio frequency signal.

Claims

1. A frequency-hopping communication method based on active electromagnetic interference, characterized in that, The method includes the following steps: Step 1: The sequence code generator of wireless terminal A generates interference control sequence code and communication control sequence code; Step 2: Wireless terminal A and wireless terminal B establish a handshake communication. Wireless terminal A sends the interference control sequence code and communication control sequence code it generates to wireless terminal B. Step 3: Select a preset frequency band as the communication frequency band for wireless terminal A and wireless terminal B. The transmitter in wireless terminal A transmits an interference signal with a preset spectrum and preset power. The remaining frequency bands, except for the communication frequency band, are shielded using the interference signal as shielded frequency bands. The center frequency and bandwidth of the spectral gaps in the interference signal change in real time according to the timing of the interference control sequence code. Step 4: The transmitter in wireless terminal A transmits a preset signal within the spectral gap of the interference signal, and the receiver in wireless terminal B receives the preset signal transmitted by wireless terminal A within the spectral gap of the interference signal; the center frequency and bandwidth of the communication bands of wireless terminal A and wireless terminal B change in real time according to the timing of the communication control sequence code.

2. The frequency hopping communication method based on active electromagnetic interference according to claim 1, characterized in that, Step 2, in which wireless terminal A sends the generated interference control sequence code and communication control sequence code to wireless terminal B, includes the following steps: Step 2-1: Wireless terminal B generates a key pair, which includes a public key and a private key. Wireless terminal B sends the generated public key to wireless terminal A. Step 2-2: Wireless terminal A uses the public key sent by wireless terminal B to encrypt the interference control sequence code and communication control sequence code generated by wireless terminal A; Steps 2-3: Wireless terminal A sends the encrypted interference control sequence code and communication control sequence code to wireless terminal B; Steps 2-4: Wireless terminal B receives the public key encrypted interference control sequence code and communication control sequence code sent by wireless terminal A, and uses the private key to decrypt the data to obtain the interference control sequence code and communication control sequence code of wireless terminal A.

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