Mobile signal shielding method, system and equipment and electronic device

Abstract

The invention provides a mobile signal shielding method. The mobile signal shielding method comprises the following steps: generating a corresponding pseudo-synchronization signal by acquiring emission information of a real base station, and then converting the pseudo-synchronization signal into a waveform signal; and transmitting an interference signal formed by superposing different waveform signals according to different communication systems so as to interfere with a synchronization signal of a real base station. The invention further provides a system, equipment and an electronic device of the mobile signal shielding method. According to the system and the method provided by the invention, error interference on uplink signals and service signals is avoided through accurate positioning, so that unnecessary spectrum interference is reduced, and normal communication is ensured. According to the method, high efficiency and high precision of interference are achieved, the system can suppress real synchronous signals, the interference effect is maximized, and it is ensured that the system still has excellent interference performance in a complex multi-path propagation environment. The interference-free frequency point and the interference-free signal are not interfered, the power consumption is saved by 80%, the ideal interference effect of 100% is achieved with the emission energy of 5%, and the low-power-consumption and high-efficiency interference is realized. And meanwhile, the limitation of multipath interference is exceeded, and an echo-like cancellation algorithm is introduced, so that a pseudo-synchronization signal effectively covers and interferes with a synchronization signal of a real base station, and terminal equipment is effectively prevented from staying in a network.

Description

Technical Field

[0001] The present invention relates to the field of mobile communication shielding, and in particular to a mobile signal shielding method, system, storage medium and electronic device. Background Art

[0002] The most common method of mobile signal shielding is to use white noise to interfere with base station signals, so extremely high signal strength is required to suppress the signals emitted by the real base station. Since the current 3G, 4G, and 5G are all based on the CDMA mode, they are naturally resistant to white noise interference, so the current white noise interference mode is extremely unsatisfactory. At the same time, they cannot distinguish between uplink and downlink signals. Interference with uplink signals will affect the entire base station, resulting in the interference range not being the terminal near the jammer, resulting in a large amount of false interference.

[0003] In order to minimize the impact on non-target communications, signaling-level interference has gradually been applied, which reduces power consumption and achieves more precise interference effects by interfering with specific signaling rather than the entire frequency band. However, many systems still use uplink signal interference, which can easily cause major false interference problems. Summary of the invention

[0004] In order to effectively solve the above problems, the present invention provides a mobile signal shielding method.

[0005] To achieve the above object, a technical solution of the present invention is:

[0006] A mobile signal shielding method,

[0007] Get the transmission information of the real base station;

[0008] generating a corresponding pseudo-synchronization signal;

[0009] Converting a pseudo-synchronous signal into a waveform signal;

[0010] The waveform signals are superimposed according to different communication standards to form interference signals;

[0011] Transmits a jamming signal to interfere with the synchronization signal of the real base station.

[0012] As a preferred solution of the present invention, obtaining the transmission information of the real base station includes scanning the surrounding cells and reading the cell parameters. The cell parameters are read according to specific needs and may include but are not limited to the frequency points, scrambling codes, cell numbers, transmission power and other information of major operators.

[0013] As a preferred solution of the present invention, generating the corresponding pseudo synchronization signal includes generating a pseudo downlink synchronization and / or pilot signal of a real base station, the duration of the pseudo synchronization signal is longer than that of the real synchronization signal, and its direction is opposite to that of the real synchronization signal.

[0014] As a preferred solution of the present invention, the waveform signals are superimposed according to different communication standards to form the interference signal, including superimposing pseudo-synchronization signals of each frequency band according to different frequency bands of the communication standard to form the interference signal.

[0015] As a preferred solution of the present invention, transmitting an interference signal to interfere with the synchronization signal of a real base station includes dividing the waveform signal into frequency bands according to different communication frequency bands, and cyclically transmitting the superimposed interference signal.

[0016] Another technical solution of the present invention is a mobile signal shielding system, comprising:

[0017] The collection module is used to collect the transmission information of surrounding real base stations;

[0018] An algorithm simulation module, configured to generate a pseudo synchronization signal according to the transmission information of the real base station, wherein the pseudo synchronization signal includes a pseudo downlink synchronization and / or pilot signal of the real base station, and the duration of the pseudo synchronization signal is longer than that of the real synchronization signal, and the direction thereof is opposite to that of the real synchronization signal;

[0019] A waveform generating module is used to convert the pseudo-synchronization signal into a waveform signal to be transmitted, and to superimpose all pseudo-synchronization signals and / or pseudo-pilot signals in each frequency band to form a continuous interference signal; a transmitting module is used to transmit the interference signal at a set frequency band and power to interfere with the synchronization signal of the real base station.

[0020] As a preferred solution of the present invention, the acquisition module includes a mobile phone module, and the mobile phone module reads parameters of surrounding cells through AT commands.

[0021] As a preferred solution of the present invention, the algorithm simulation module adopts an ASIC simulation algorithm to generate the pseudo synchronization signal and / or pseudo pilot signal by reversely processing the synchronization signal of the real base station and extending its duration.

[0022] As a preferred solution of the present invention, the waveform generating module includes an FPGA chip, which converts the pseudo-synchronization signal and / or pseudo-pilot signal into an IQ waveform signal for RF transmission. The FPGA chip reads the pseudo-synchronization signal and / or pseudo-pilot signal from a shared memory, performs superposition processing on it, and converts it into an interference signal to be transmitted.

[0023] As a preferred solution of the present invention, the algorithm simulation module generates the pseudo synchronization signal and / or pseudo pilot signal according to the communication protocol specification, and classifies and processes the real base station information of different operators and different cells.

[0024] As a preferred solution of the present invention, the transmitting module includes a radio frequency chip, which includes a transceiver and a power amplifier, and is used to transmit the interference signal through the transceiver and the power amplifier at a set frequency band and power to interfere with the synchronization signal of the real base station.

[0025] Yet another technical solution of the present invention is:

[0026] A device includes a computer-readable storage medium or a hardware logic circuit, wherein the device or the medium is used to store or implement functional logic for executing the above method.

[0027] Another technical solution of the present invention is:

[0028] An electronic device comprises a memory, a processor and a logic circuit or a computer program stored in the memory, wherein the processor or hardware circuit of the electronic device is configured to execute the logic circuit or the computer program to implement the functional steps of the method described above.

[0029] The beneficial effects achieved by the present invention are:

[0030] The system and method proposed in the present invention only interfere with the downlink synchronization and pilot signals of the real base station through precise positioning, avoiding erroneous interference with uplink signals and service signals, thereby reducing unnecessary spectrum interference and ensuring normal communication. Compared with the jammers in the existing market that cannot accurately identify signals and easily interfere with downlink and uplink signals, especially in the TDD (time division duplex) mode, which cause a large number of erroneous interference to uplink signals and lead to frequent communication failures, the present invention greatly improves the accuracy and effect of interference.

[0031] The system learns and monitors the current spectrum information through the mobile phone chip to accurately identify the base station signal and accurately locate the interference target. Compared with traditional methods, the system has the ability to only interfere with the downlink synchronization and pilot signals, avoiding interference with business signals and ensuring high efficiency and high accuracy of interference.

[0032] The pseudo-synchronization / pilot signal generator is used to generate interference signals, ensuring that the pseudo-synchronization signal lasts longer than the real signal and is in the opposite direction, achieving a stronger interference effect. Through the echo cancellation algorithm, the system can suppress the real synchronization signal, maximize the interference effect, and ensure excellent interference performance in complex multipath propagation environments.

[0033] The system can precisely interfere with the target frequency without interfering with the non-service frequency, greatly reducing the transmission power requirement and saving up to 80% of energy consumption. Compared with traditional jammers, the system can further save 80% of power consumption without interfering with service signals, and achieve 100% ideal interference effect with 5% of transmission energy, thus realizing low power consumption and high efficiency interference.

[0034] The present invention goes beyond the limitation of multipath interference and introduces a similar echo cancellation algorithm, so that the pseudo-synchronization signal effectively covers and interferes with the synchronization signal of the real base station, effectively preventing the terminal device from staying on the network. At the same time, the pseudo-synchronization signal has a longer duration, ensuring that the terminal device attempts to synchronize to the pseudo-synchronization signal but cannot stay on the network. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 Schematic diagram of a mobile signal shielding method according to an embodiment of the present invention

[0036] Figure 2 is an overall structural block diagram of a mobile signal shielding system according to an embodiment of the present invention;

[0037] Figure 3 is a structural schematic diagram of a mobile signal shielding system according to an embodiment of the present invention;

[0038] Figure 4 is a schematic diagram of an FPGA chip control flow of a mobile signal shielding system according to an embodiment of the present invention;

[0039] In the figure, 1, acquisition module; 2, algorithm simulation module; 3, waveform generation module; 4, transmission module; 31, FPGA chip; 41, RF chip; 411, transceiver; 412, power amplifier. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] like Figure 1 As shown, a mobile signal shielding method comprises the following steps:

[0042] S101, obtaining transmission information of a real base station;

[0043] S102, generating a corresponding pseudo synchronization signal;

[0044] S103, converting the pseudo-synchronous signal into a waveform signal;

[0045] S104, superimposing waveform signals according to different communication standards to form interference signals;

[0046] S105: Transmit an interference signal to interfere with the synchronization signal of the real base station.

[0047] Preferably, S101, obtaining the transmission information of the real base station, including scanning the surrounding cells and reading the cell parameters. The cell parameters are read according to specific needs, and may include but are not limited to the frequency points, scrambling codes, cell numbers, transmission power and other information of major operators. The interference signal is accurately generated according to the cell parameters, which improves the pertinence of the interference effect.

[0048] Preferably, S102, generating the corresponding pseudo synchronization signal includes generating a pseudo downlink synchronization and / or pilot signal of a real base station, wherein the duration of the pseudo synchronization signal is longer than that of the real synchronization signal, and its direction is opposite to that of the real synchronization signal. The pseudo synchronization signal has the same scrambling code as the real signal, but is in the opposite direction and lasts longer, thereby ensuring effective interference with the real signal.

[0049] Preferably, S103, converting the pseudo-synchronization signal into a waveform signal, includes performing digital signal processing on the pseudo-synchronization signal through the waveform generation module 3, converting it into an IQ waveform signal for RF transmission, and storing it in the shared memory of the FPGA chip 31. The pseudo-synchronization signal is digitized and cached in the shared memory to ensure the stability and controllability of the transmission.

[0050] Preferably, S104, superimposing the waveform signals according to different communication standards to form the interference signal, including superimposing pseudo-synchronization signals of each frequency band according to different frequency bands of the communication standard to form the interference signal. Superimposing pseudo-synchronization signals of different frequency bands ensures comprehensive interference to the target signal and a wide coverage range.

[0051] Preferably, S105, transmitting the interference signal to interfere with the synchronization signal of the real base station includes dividing the waveform signal into frequency bands according to different communication frequency bands, and cyclically transmitting the superimposed interference signal. Cyclic transmission of the interference signal ensures continuous interference with the real base station signal and improves the stability of the interference effect.

[0052] In one embodiment, see Figure 2 , a mobile signal shielding system, comprising:

[0053] Collection module 1, used to collect transmission information of surrounding real base stations;

[0054] Algorithm simulation module 2, used to generate a pseudo synchronization signal according to the transmission information of the real base station, the pseudo synchronization signal includes generating a pseudo downlink synchronization and / or pilot signal of the real base station, the duration of the pseudo synchronization signal is longer than that of the real synchronization signal, and its direction is opposite to that of the real synchronization signal;

[0055] A waveform generating module 3, used for converting the pseudo-synchronization signal into a waveform signal to be transmitted, and superimposing all pseudo-synchronization signals and / or pseudo-pilot signals in each frequency band to form a continuous interference signal;

[0056] The transmitting module 4 is used to transmit the interference signal at a set frequency band and power to interfere with the synchronization signal of the real base station.

[0057] In a specific embodiment, see Figure 3 The acquisition module 1 includes a mobile phone module, which reads the parameters of the surrounding cells through AT commands. The cell parameters can be read according to actual needs, including the frequency points, scrambling codes, cell numbers, transmission power and other information of major operators.

[0058] The algorithm simulation module 2 adopts an ASIC simulation algorithm to generate a pseudo synchronization signal and / or a pseudo pilot signal by reversely processing the synchronization signal of the real base station and extending its duration.

[0059] The waveform generation module 3 includes an FPGA chip 31, which converts the pseudo synchronization signal and / or pseudo pilot signal into an IQ waveform signal for radio frequency transmission. The FPGA chip 31 reads the pseudo synchronization signal and / or pseudo pilot signal from the shared memory, performs superposition processing, and converts it into an interference signal to be transmitted.

[0060] The algorithm simulation module 2 generates a pseudo synchronization signal and / or a pseudo pilot signal according to the communication protocol specification, and classifies and processes the real base station information of different operators and cells.

[0061] The transmitting module 4 includes a radio frequency chip 41, which includes a transceiver 411 and a power amplifier 412, and is used to transmit the interference signal through the transceiver 411 and the power amplifier 412 at a set frequency band and power to interfere with the synchronization signal of the real base station. Among them, the transceiver 411 is a Transceiver transceiver, and the power amplifier 412 is a Sky6631 power amplifier.

[0062] The specific usage methods and scenarios are as follows:

[0063] After the device is powered on, the acquisition module 1 first obtains the transmission information of the real base station.

[0064] Subsequently, the algorithm simulation module 2 generates a pseudo downlink synchronization / pilot signal of the real base station according to the transmission information of the real base station.

[0065] Then, the waveform generating module 3 converts the pseudo downlink synchronization / pilot signal into a waveform signal to be transmitted.

[0066] Finally, the transmitting module 4 transmits the waveform signal through the radio frequency chip 41 .

[0067] Main control flow and logic:

[0068] The algorithm simulation module 2 acts as the master control, controls the mobile phone module through AT commands, and reads the cell information, including frequency, scrambling code, cell number and other parameters.

[0069] Then, according to the algorithm, the pseudo downlink synchronization / pilot signal of the real base station is generated and saved as an array. Each scanned cell will generate a corresponding interference signal with the same scrambling code but the signal direction is reversed and the duration is longer to achieve the interference effect.

[0070] Preferably, the algorithm simulates and generates a downlink channel convolutional code efficient countermeasure signal to achieve a better shielding effect.

[0071] In one embodiment, the FPGA chip 31 provides a 500 MHZ bandwidth signal through an I / Q output waveform.

[0072] The reverse signal offsets the original synchronization signal, weakens the real signal, and synchronizes the terminal to the newly generated pseudo synchronization signal. However, this pseudo signal does not contain the cell broadcast signal, resulting in the failure of the terminal to stay on the network.

[0073] Since each cell has a corresponding pseudo-synchronization signal, one jammer may need to process dozens to hundreds of cell signals.

[0074] The pseudo-synchronization signal generation algorithm is performed according to the wireless communication protocol specification, and then reverse processing is performed and the duration is extended.

[0075] Finally, the waveform array and control signal are transmitted to the shared memory of FPGA chip 31 through the serial port.

[0076] FPGA chip 31 control flow:

[0077] These pseudo-synchronization signals are stored in the FPGA chip 31. Then, according to the frequency band setting of the Transceiver, the pseudo-synchronization signals of each frequency band are superimposed to form a comprehensive interference signal, which is sent to the Transceiver for transmission. Since the synchronization signal is transmitted periodically, the FPGA chip 31 transmits the same pseudo-synchronization signal cyclically to ensure continuous interference. In the current unlimited spectrum planning, the spectrum of 2G, 3G, 4G, and 5G is divided into 12 segments, and space for future expansion is reserved.

[0078] The control flow and logic of FPGA chip 31 are as follows Figure 4 As shown: The waveform data is written into the memory through the serial port, where different memory locations correspond to different channels. When reading the memory, the waveform is generated by controlling the pins.

[0079] The FPGA chip 31 reads data from the memory, generates an IQ waveform, and then transmits it to the RF circuit through the RF chip 41 interface for signal transmission.

[0080] An embodiment of the present invention further provides a device, which includes a computer-readable storage medium or a hardware logic circuit, for storing or implementing the functional logic of any of the above methods. The computer-readable storage medium stores a computer program or a logic circuit, and when the program or the logic circuit is executed by a processor or a hardware circuit, the steps of the method can be implemented.

[0081] In an exemplary embodiment, the computer-readable storage medium may include, but is not limited to, various media capable of storing computer programs, such as a USB flash drive, a read-only memory (ROM), a random access memory (RAM), a mobile hard disk, a magnetic disk, and an optical disk.

[0082] An embodiment of the present invention further provides an electronic device, the device comprising a memory, a processor, and a logic circuit or a computer program stored in the memory. The processor or hardware circuit of the electronic device is configured to execute the logic circuit or the computer program, thereby implementing the functional steps of any of the above methods.

[0083] In an exemplary embodiment, the electronic device may further include a transmission device and an input / output device, wherein the transmission device is connected to the processor for transmitting data; the input / output device is connected to the processor for receiving user input or displaying output information.

[0084] In the device or electronic apparatus, when the ASIC emulation algorithm is used, the system processing logic will be different. Specifically, the ASIC emulation algorithm directly implements part or all of the signal processing functions through hardware circuits, thereby reducing the computational burden of traditional processor software execution.

[0085] If an ASIC simulation algorithm is used in the device to implement the functional logic of the method, the computer-readable storage medium needs to store configuration files or special instructions suitable for ASIC hardware in addition to conventional computer program codes. These configuration files instruct the ASIC hardware to directly perform the reverse processing of the real base station synchronization signal, the generation of pseudo-synchronization signals, and the superposition and transmission of signals. Unlike traditional software simulation, ASIC simulation completes these operations at the logical hardware level, thereby improving the speed and efficiency of signal processing.

[0086] In this case, the processor of the electronic device is mainly used for coordination control, data flow management and communication, while the actual signal processing, pseudo-synchronous signal generation, frequency band division and interference signal transmission are directly performed by the ASIC hardware circuit. Therefore, the hardware logic circuit is the key part to realize the core functions, and the computer program only plays a role in auxiliary configuration and management.

[0087] In an exemplary embodiment, the hardware circuit of the electronic device may include an ASIC chip, an FPGA chip 31 or other programmable hardware logic circuits. These hardwares complete efficient and low-latency signal processing through a dedicated circuit structure to ensure that the device can respond to the signal of the real base station in real time and generate a pseudo-synchronous signal that meets the interference requirements. The design of the ASIC simulation algorithm makes full use of the parallel processing capabilities of the hardware circuit, greatly improves the speed of signal processing, and makes the generation and transmission of interference signals more accurate and efficient.

[0088] In addition, in the system, the processor, FPGA chip 31 and ASIC hardware circuit will be connected through a high-speed communication interface to ensure that the generation, storage, conversion and transmission of the pseudo-synchronous signal can be carried out in coordination to achieve the expected shielding effect. In this way, by adopting the ASIC simulation algorithm, the entire mobile signal shielding system can efficiently implement the functional steps of any of the above methods at the hardware level, providing a stable and fast interference effect.

[0089] Obviously, those skilled in the art should understand that the above modules or steps of the present invention can be implemented by a general computing device, they can be concentrated on a single computing device, or distributed on a network composed of multiple computing devices, they can be implemented by a program code executable by a computing device, so that they can be stored in a storage device and executed by the computing device, and in some cases, the steps shown or described can be executed in a different order than here, or they can be made into individual integrated circuit modules, or multiple modules or steps therein can be made into a single integrated circuit module for implementation. Thus, the present invention is not limited to any specific combination of hardware and software.

[0090] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A mobile signal shielding method, characterized in that: Get the transmission information of the real base station; generating a corresponding pseudo-synchronization signal; Converting a pseudo-synchronous signal into a waveform signal; The waveform signals are superimposed according to different communication standards to form interference signals; Transmits a jamming signal to interfere with the synchronization signal of the real base station.

2. A mobile signal shielding method according to claim 1, characterized in that: Obtain the transmission information of the actual base station, including scanning surrounding cells and reading cell parameters.

3. A mobile shielding method according to claim 1, characterized in that: Generating the corresponding pseudo synchronization signal includes generating a pseudo downlink synchronization and / or pilot signal of a real base station, wherein the duration of the pseudo synchronization signal is longer than that of the real synchronization signal, and its direction is opposite to that of the real synchronization signal.

4. A mobile shielding method according to claim 1, characterized in that: The waveform signals are superimposed according to different communication standards to form the interference signal, including, according to different frequency bands of the communication standard, superimposing pseudo-synchronization signals of each frequency band to form the interference signal.

5. A mobile shielding method according to claim 1, characterized in that: Transmitting the interference signal to interfere with the synchronization signal of the real base station includes dividing the waveform signal into frequency bands according to different communication frequency bands, and cyclically transmitting the superimposed interference signal.

6. A mobile signal shielding system, comprising: The collection module is used to collect the transmission information of surrounding real base stations; An algorithm simulation module, configured to generate a pseudo synchronization signal according to the transmission information of the real base station, wherein the pseudo synchronization signal includes a pseudo downlink synchronization and / or pilot signal of the real base station, and the duration of the pseudo synchronization signal is longer than that of the real synchronization signal, and the direction thereof is opposite to that of the real synchronization signal; A waveform generating module is used to convert the pseudo-synchronization signal into a waveform signal to be transmitted, and to superimpose all pseudo-synchronization signals and / or pseudo-pilot signals in each frequency band to form a continuous interference signal; a transmitting module is used to transmit the interference signal at a set frequency band and power to interfere with the synchronization signal of the real base station.

7. The mobile signal shielding system according to claim 6, characterized in that: The acquisition module includes a mobile phone module, and the mobile phone module reads parameters of surrounding cells through AT commands.

8. The mobile signal shielding system according to claim 6, characterized in that: The algorithm simulation module adopts an ASIC simulation algorithm to generate the pseudo synchronization signal and / or pseudo pilot signal by performing reverse processing on the synchronization signal of the real base station and extending its duration.

9. The mobile signal shielding system according to claim 6, characterized in that: The waveform generation module includes an FPGA chip, which converts the pseudo-synchronization signal and / or pseudo-pilot signal into an IQ waveform signal for radio frequency transmission. The FPGA chip reads the pseudo-synchronization signal and / or pseudo-pilot signal from a shared memory, performs superposition processing on the pseudo-synchronization signal and / or pseudo-pilot signal, and converts the pseudo-synchronization signal and / or pseudo-pilot signal into an interference signal to be transmitted.

10. The mobile signal shielding system according to claim 9, characterized in that: The algorithm simulation module generates the pseudo synchronization signal and / or pseudo pilot signal according to the communication protocol specification, and classifies and processes the real base station information of different operators and different cells.

11. The mobile signal shielding system according to claim 6, characterized in that: The transmitting module includes a radio frequency chip, which includes a transceiver and a power amplifier, and is used to transmit the interference signal through the transceiver and the power amplifier at a set frequency band and power to interfere with the synchronization signal of the real base station.

12. A device, characterized in that: The device or medium comprises a computer-readable storage medium or a hardware logic circuit, wherein the device or medium is used to store or implement functional logic for executing the method according to any one of claims 1 to 6.

13. An electronic device, characterized in that: The electronic device comprises a memory, a processor, and a logic circuit or a computer program stored in the memory, wherein the processor or the hardware circuit of the electronic device is configured to execute the logic circuit or the computer program to implement the functional steps of the method according to any one of claims 1 to 6.

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