Signal shielding method and signal shielding device

Abstract

The application discloses a signal shielding method and a signal shielding device. The signal shielding method comprises the following steps: generating at least one first signal based on each of at least one set of first parameters; determining the at least one set of first parameters based on at least one set of second parameters of a network side synchronization signal; each of the at least one set of first parameters comprises a transmission frequency and a corresponding first bandwidth; each of the at least one set of second parameters comprises a center frequency and a corresponding second bandwidth; and emitting the at least one first signal; wherein the at least one first signal represents an interference signal of the network side synchronization signal.

Description

Technical Field

[0001] This application relates to the field of mobile communications, and more particularly to a signal jamming method and a signal jammer. Background Technology

[0002] Terminals have become indispensable tools in daily life and work. However, in some scenarios, such as examination rooms, prisons, and confidential meetings, the use of terminals may lead to information leakage, in which case it is necessary to block the terminal's signal.

[0003] Among related technologies, signal jammers based on signal shielding technologies such as fake base station adsorption technology and signaling-level shielding technology can shield signals, but they require signaling parsing, which results in complex implementation and high cost. Summary of the Invention

[0004] In view of this, embodiments of this application provide a signal shielding method and a signal shielder to at least solve the problems of complex implementation and high cost in related technologies when shielding signals.

[0005] The technical solution of this application embodiment is implemented as follows:

[0006] This application provides a signal shielding method, the method comprising:

[0007] At least one first signal is generated based on each of the at least one set of first parameters; the at least one set of first parameters is determined based on at least one set of second parameters of the network-side synchronization signal; each of the at least one set of first parameters includes a transmission frequency and a corresponding first bandwidth; each of the at least one set of second parameters includes a center frequency and a corresponding second bandwidth.

[0008] At least one first signal is issued; wherein,

[0009] The at least one first signal represents an interference signal of the network-side synchronization signal.

[0010] In the above scheme, the at least one set of second parameters is determined based on network configuration data corresponding to at least one operator.

[0011] In the above scheme, the network-side synchronization signal includes at least one of the following:

[0012] Synchronization Signal and Physical Broadcast Channel Block (SSB);

[0013] Primary synchronization signal (PSS);

[0014] Secondary synchronization signal (SSS);

[0015] Physical broadcast channel (PBCH).

[0016] In the above scheme, when the network-side synchronization signal is characterized as SSB, the second bandwidth is determined based on the subcarrier spacing of SSB.

[0017] This application also provides a signal jammer, including:

[0018] A signal generation module is configured to generate at least one first signal based on each of at least one set of first parameters; the at least one set of first parameters is determined based on at least one set of second parameters of a network-side synchronization signal; each of the at least one set of first parameters includes a transmission frequency and a corresponding first bandwidth; each of the at least one set of second parameters includes a center frequency and a corresponding second bandwidth.

[0019] The radio frequency module is used to transmit the at least one first signal; wherein,

[0020] The at least one first signal represents an interference signal of the network-side synchronization signal.

[0021] In the above scheme, the signal jammer further includes:

[0022] A control module is used to set the at least one set of first parameters.

[0023] In the above scheme, it is used for:

[0024] Receive the first instruction by setting the interface;

[0025] Based on the first instruction, at least one set of first parameters is determined.

[0026] In the above scheme, the at least one set of second parameters is determined based on network configuration data corresponding to at least one operator.

[0027] In the above scheme, the network-side synchronization signal includes at least one of the following:

[0028] SSB;

[0029] PSS;

[0030] SSS;

[0031] PBCH.

[0032] In the above scheme, when the network-side synchronization signal is characterized as SSB, the second bandwidth is determined based on the subcarrier spacing of SSB.

[0033] In this embodiment, the signal jammer generates and transmits at least one first signal based on each of at least one set of first parameters. Each set of first parameters includes a transmission frequency and a corresponding first bandwidth. The at least one set of first parameters is determined based on at least one set of second parameters of the network-side synchronization signal. Each set of second parameters includes a center frequency and a corresponding second bandwidth. The at least one first signal represents an interference signal to the network-side synchronization signal. By interfering with the network-side synchronization signal, the terminal is unable to perform the synchronization process with the network side. Therefore, the terminal is unable to initiate a random access procedure to the network side, thus achieving signal jamming of the terminal. The above-described signal jamming scheme for the terminal accurately achieves signal jamming of the terminal with low implementation cost and is suitable for signal jamming scenarios such as examination rooms, prisons, and confidential meetings. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of fake base station shielding in related technologies;

[0035] Figure 2 This is a schematic diagram of the signaling-level shielding device in related technologies;

[0036] Figure 3 This is a schematic diagram of a full-band white noise shield in related technologies;

[0037] Figure 4 A schematic diagram illustrating the implementation process of the signal shielding method provided in this application embodiment;

[0038] Figure 5 A schematic diagram illustrating the frequency domain resources occupied by SSB as provided in an embodiment of this application;

[0039] Figure 6 A schematic diagram illustrating the channel frequency domain resources occupied by the synchronization channel and broadcast provided in the embodiments of this application;

[0040] Figure 7 This is a schematic diagram of 5G signal frequency bands provided in an embodiment of this application;

[0041] Figure 8 This is a schematic diagram comparing full-band shielding and precise shielding provided in an embodiment of this application.

[0042] Figure 9 This is a schematic diagram of the structure of the signal jammer provided in the embodiments of this application;

[0043] Figure 10 A schematic diagram of the structure of the signal jammer provided in the application embodiment of this application;

[0044] Figure 11 This is a schematic diagram of the structure of a signal jammer provided in another embodiment of this application;

[0045] Figure 12 This is a schematic diagram of the structure of a signal jammer provided in another application embodiment of this application. Detailed Implementation

[0046] With the widespread adoption of mobile communication, smartphones and tablets have become indispensable tools in daily life and work. However, in some scenarios, such as examination rooms, prisons, and confidential meetings, the use of these devices may lead to information leaks, necessitating signal shielding. Related technologies include fake base station detection, signaling-level shielding, and full-band white noise suppression.

[0047] Fake base station targeting technology uses signals identical to those of mobile communication systems to block user communication by exploiting the handover mechanism. For example... Figure 1 The diagram illustrates a fake base station blocking mechanism. The fake base station receives and parses messages sent by a mobile phone, impersonates a carrier base station, and sends a reselection signal to the mobile phone. This forces the phone to reconnect to the fake base station, thus severing the phone's connection to the carrier's public network. Fake base station blocking technology requires the implementation of mobile communication protocol stack functions, making it complex and costly. Furthermore, the installation and deployment of fake base station blockers are complex.

[0048] In mobile communication, mobile phones interact with base stations in real time across various states, including standby, making calls, sending text messages, and browsing the internet. Signaling-level blocking technology blocks this signaling interaction between the mobile phone and the base station, thus preventing the phone from communicating. For example... Figure 2 The diagram illustrates a signaling-level jammer, which includes a receiving antenna, a base station signaling demodulation and analysis module, a signal processor, an RF transmission module, and a transmitting antenna. Base station signals are received by the receiving antenna and sent to the base station signaling demodulation and analysis module. This module analyzes the base station signals in real time, including demodulation, decoding synchronization, pilot signals, and control channels, to synchronize with the base station and acquire base station system information. The signal processor generates and modulates corresponding interference signals based on the signaling analysis results, which are then emitted by the RF transmission module via the antenna at the desired interference time. Because signaling-level jamming technology requires real-time analysis of base station signals, simultaneous signaling-level scrambling, and modulation of the scrambled signals before transmission according to the base station's timing sequence, the jammer needs to perform physical layer functions for 2G, 3G, 4G, and 5G to achieve signal encoding and decoding. Currently, this is typically implemented using SOC chips or FPGA chips, resulting in high hardware costs and making it difficult to apply in cost-controlled scenarios such as school examination rooms.

[0049] Full-band high-power white noise suppression technology transmits noise interference at a certain power frequency that is in the same frequency as mobile communication, preventing the mobile phone from establishing a connection with the base station and thus achieving the purpose of blocking the mobile phone signal. For example... Figure 3 The schematic diagram of a full-band white noise jammer shows that it includes at least a power module, a signal generator, and multiple radio frequency channels consisting of a voltage-controlled oscillator (VCO), an RF power amplifier module, and a transmitting antenna. The interference signal is generated by the signal generator, modulated onto the mobile communication operating frequency band by the VCO, and then transmitted through the transmitting antenna after RF power amplification. Because the mobile communication frequency band is very wide, a full-band high-power white noise jammer requires multiple RF channels to achieve full-band suppression. While full-band high-power white noise suppression technology is relatively low-cost, the large bandwidth and strong anti-interference capabilities of 5G necessitate transmitting sufficiently strong interference signals over a wide bandwidth to effectively shield mobile signals, placing higher demands on the RF power amplifier. Excessive transmission power generates significant electromagnetic radiation, which can harm electronic equipment, instrument panels, and the human body. Therefore, signal jammers based on full-band high-power white noise suppression technology are insufficient to meet the requirements of 5G scenarios.

[0050] Among related technologies, low-cost signal jammers based on full-band high-power white noise suppression technology cannot effectively block 5G signals and are difficult to meet the needs of scenarios after 5G commercialization. While signal jammers based on fake base station adsorption technology and signaling-level jamming technology can block signals, they require signaling parsing, which is complex and costly to implement.

[0051] Based on this, in various embodiments of this application, the signal jammer generates at least one first signal and emits at least one first signal based on each of at least one set of first parameters. Here, each set of first parameters includes a transmission frequency and a corresponding first bandwidth. The at least one set of first parameters is determined based on at least one set of second parameters of the network-side synchronization signal. Each set of second parameters includes a center frequency and a corresponding second bandwidth. The at least one first signal represents an interference signal of the network-side synchronization signal. By interfering with the network-side synchronization signal, the terminal is unable to perform the synchronization process with the network side. As a result, the terminal is unable to initiate a random access procedure to the network side, thereby achieving signal jamming of the terminal. The above-mentioned signal jamming scheme for the terminal accurately achieves signal jamming of the terminal with low implementation cost and is suitable for signal jamming scenarios such as examination rooms, prisons, and confidential meetings. At the same time, it can achieve signal jamming of the terminal with lower power consumption and electromagnetic radiation.

[0052] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0053] Figure 4 This is a schematic diagram illustrating the implementation process of the signal shielding method provided in the embodiments of this application, such as... Figure 4 The signal shielding methods shown include:

[0054] Step 401: Generate at least one first signal based on each set of first parameters in at least one set of first parameters.

[0055] Wherein, the at least one set of first parameters is determined based on at least one set of second parameters of the network-side synchronization signal; each set of first parameters in the at least one set of first parameters includes a transmission frequency and a corresponding first bandwidth; each set of second parameters in the at least one set of second parameters includes a center frequency and a corresponding second bandwidth.

[0056] Here, each set of second parameters includes at least one center frequency and a corresponding second bandwidth. Each set of center frequencies and corresponding second bandwidths enables network-side synchronization signal transmission within a frequency band.

[0057] Here, each of the at least one set of first parameters describes the frequency characteristics of the generated first signal, and each corresponding first signal can be generated based on the set of first parameters. When each radio frequency channel in the signal shield generates a first signal based on the set of first parameters, it includes at least two steps: signal generation and signal modulation, that is, generating a signal for signal shielding and modulating the generated signal onto the corresponding radio frequency channel.

[0058] Here, each set of first parameters includes at least one transmission frequency and a first bandwidth corresponding to that transmission frequency. At least one set of first parameters is determined based on at least one set of second parameters. The frequency domain corresponding to each set of second parameters can determine one set of first parameters; the frequency domain corresponding to at least two sets of second parameters can determine one set of first parameters; the frequency domain corresponding to each set of second parameters can determine at least two sets of first parameters; and the frequency domain corresponding to at least two sets of second parameters can determine at least two sets of first parameters. In other words, the correspondence between the second parameter set and the first parameter set can be one-to-one, many-to-one, one-to-many, or many-to-many, or one or more other methods.

[0059] For example, if the center frequency of a set of second parameters is determined to be 2524.95MHz and the second bandwidth is 14.4MHz, the corresponding frequency band is (2517.75MHz, 2532.15MHz). Based on this frequency band, it can be divided into one transmission frequency band (2517.75MHz, 2532.15MHz), or into two transmission frequency bands (2517.75MHz, 2524.95MHz) and (2524.95MHz, 2532.15MHz), or into more transmission frequency bands. Each transmission frequency band here represents the first signal generated and transmitted by each radio frequency channel.

[0060] Here, the methods for determining at least one set of first parameters include, but are not limited to: determining the first parameters based on the second parameters, and setting the voltage-controlled oscillator in the signal shield based on the first parameters before the signal shield leaves the factory; designing a control circuit through a hardware platform and reserving an interface to receive software control commands in the working scenario; and determining the parameters through a calculation unit based on at least one set of second parameters.

[0061] By interfering with the network-side synchronization signal, the terminal is prevented from synchronizing with the network, thus preventing it from initiating a random access procedure and achieving signal shielding. This signal shielding scheme achieves precise signal shielding of the terminal with low implementation cost, making it suitable for signal shielding scenarios such as examination rooms, prisons, and confidential meetings. Furthermore, it achieves signal shielding with lower power consumption and electromagnetic radiation.

[0062] In one embodiment, the network-side synchronization signal includes at least one of the following:

[0063] SSB;

[0064] PSS;

[0065] SSS;

[0066] PBCH.

[0067] Here, the network-side synchronization signal includes at least one of the following: SSB; PSS; SSS; PBCH. That is, it can be any combination of the following: SSB; PSS; SSS; PBCH; SSB+PSS; SSB+SSS; SSB+PBCH; PSS+SSS; PSS+PBCH; SSS+PBCH; SSB+PSS+SSS; SSB+PSS+PBCH; SSB+SSS+PBCH; PSS+SSS+PBCH; SSB+PSS+SSS+PBCH.

[0068] The signal blocking method of this application embodiment can at least achieve 5G and / or 4G terminal signal blocking.

[0069] In 5G, the time-frequency resources corresponding to signals related to cell synchronization are organized together to form SSBs. The terminal detects the base station's SSBs, obtains base station messages, and completes synchronization with the base station. The obtained messages include, but are not limited to, the physical cell ID, system frame number, and base station control information. The terminal uses the SSBs sent by the base station for measurements, cell handover, and reselection. Here, the base station sends SSBs periodically, and the terminal detects them periodically, thereby maintaining continuous synchronization and signaling interaction between the terminal and the base station.

[0070] In 4G, synchronization signals include PSS, SSS, and PBCH.

[0071] Based on at least one set of second parameters of the corresponding network-side synchronization signal in 5G and / or 4G, at least one set of corresponding first parameters is determined, thereby generating an interference signal to shield this network-side synchronization signal. In this way, by interfering with the network-side synchronization signal, the terminal is unable to perform the synchronization process with the network side, thus preventing the terminal from initiating a random access procedure to the network side, thereby achieving signal shielding of the terminal. The above-described signal shielding scheme for the terminal accurately achieves signal shielding of the terminal with low implementation cost. Simultaneously, it achieves signal shielding of the terminal with lower power consumption and electromagnetic radiation.

[0072] In one embodiment, the at least one set of second parameters is determined based on network configuration data corresponding to at least one operator.

[0073] Here, based on the operator's network configuration data, the center frequency and corresponding second bandwidth of each synchronization signal are determined, thereby determining each of at least one set of second parameters. The network configuration data includes, but is not limited to: the center frequency of the SSB, the center frequency of the 4G cell, and the subcarrier spacing. The center frequency of the operator's 4G cell is the same as the center frequency of the synchronization broadcast channel.

[0074] The methods for determining the center frequency and corresponding second bandwidth of each synchronization signal include, but are not limited to: determining the center frequency and corresponding second bandwidth of the synchronization signal based on the center frequency of the SSB; and determining the center frequency and corresponding second bandwidth of the synchronization signal based on the center frequency of the operator's 4G cell.

[0075] In this way, by generating interference signals that interfere with the subcarriers of the resource blocks (RBs) occupied by the network-side synchronization signals, precise shielding of the network-side synchronization signals can be achieved.

[0076] In practical applications, such as Figure 5The diagram illustrates the frequency domain resources occupied by the SSB. The SSB occupies 20 RBs in the frequency domain, with each RB containing 12 subcarriers, for a total of 240 subcarriers. By generating interference signals to disrupt the subcarriers, precise shielding of network-side synchronization signals can be achieved.

[0077] like Figure 6 The diagram illustrates the frequency domain resources occupied by the synchronization channel and broadcast channel. In 4G, the PSS, SSS, and PBCH occupy 72 subcarriers with a bandwidth of 1.08MHz, and are fixed at the center of the system bandwidth. Therefore, the second bandwidth corresponding to the center frequency of the operator's 4G cell can be set to a fixed bandwidth of 1.08MHz. By generating interference signals to interfere with the subcarriers, precise shielding of the network-side synchronization signal can be achieved.

[0078] Here, as Figure 7 The diagram illustrates 5G signal frequency bands, which include at least 2515MHz to 2675MHz, 3400MHz to 3500MHz, 3500MHz to 3600MHz, and 4800MHz to 4900MHz. For each band, the SSB center frequency is fixed at 2524.95MHz, 3449.28MHz, 3509.76MHz, and 4849.83MHz, respectively. As communication technology advances, new frequency bands may be identified, and the SSB center frequency may change accordingly. The second parameter can be determined as needed.

[0079] In one embodiment, when the network-side synchronization signal is characterized as SSB, the second bandwidth is determined based on the subcarrier spacing of the SSB.

[0080] 5G supports multiple subcarrier spacings, each with different SSB bandwidth requirements. The subcarrier spacing for each SSB is determined based on the operator's network configuration data. In non-millimeter wave bands, the maximum supported subcarrier spacing is 60kHz, with the largest SSB occupying a bandwidth of 14.4MHz. In millimeter wave bands, the maximum supported subcarrier spacing is 240kHz, with the largest SSB occupying a bandwidth of 57.6MHz. The specific determination method can be obtained from the correspondence between subcarrier spacing and bandwidth shown in Table 1 below.

[0081] Table 1 SSB Frequency Domain Bandwidth

[0082]

[0083] It is evident that, with the same subcarrier spacing, the frequency domain bandwidth occupied by the SSB is much smaller than the system bandwidth, such as... Figure 8The diagram showing a comparison between full-band shielding and precise shielding illustrates that, compared to full-band shielding, jamming the SSB prevents the terminal from synchronizing with the network, thus preventing the terminal from initiating a random access procedure. This achieves signal shielding. Consequently, the bandwidth of the transmitted jamming signal can be significantly reduced; that is, a jamming signal emitted with lower transmission power can effectively shield the terminal signal, achieving signal shielding with lower power consumption and electromagnetic radiation.

[0084] Step 402: Send at least one first signal.

[0085] The at least one first signal represents an interference signal of the network-side synchronization signal.

[0086] Here, transmitting at least one first signal involves at least two steps: radio frequency power amplification and antenna transmission, i.e., completing the power amplification of the first signal and transmitting the first signal through the antenna.

[0087] In various embodiments of this application, the signal jammer generates and emits at least one first signal based on each of at least one set of first parameters. Here, each set of first parameters includes a transmission frequency and a corresponding first bandwidth. The at least one set of first parameters is determined based on at least one set of second parameters of the network-side synchronization signal. Each set of second parameters includes a center frequency and a corresponding second bandwidth. The at least one first signal represents an interference signal of the network-side synchronization signal. By interfering with the network-side synchronization signal, the terminal is unable to perform the synchronization process with the network side. As a result, the terminal is unable to initiate a random access procedure to the network side, thereby achieving signal jamming of the terminal. The above-described signal jamming scheme for the terminal accurately achieves signal jamming of the terminal with low implementation cost and is suitable for signal jamming scenarios such as examination rooms, prisons, and confidential meetings. At the same time, it can achieve signal jamming of the terminal with lower power consumption and electromagnetic radiation.

[0088] Figure 9 This is a schematic diagram of the structure of a signal jammer provided in an embodiment of this application. The signal jammer includes:

[0089] The signal generation module 901 is used to generate at least one first signal based on each of the at least one set of first parameters; the at least one set of first parameters is determined based on at least one set of second parameters of the network-side synchronization signal; each of the at least one set of first parameters includes a transmission frequency and a corresponding first bandwidth; each of the at least one set of second parameters includes a center frequency and a corresponding second bandwidth.

[0090] Radio frequency module 902 is used to transmit the at least one first signal; wherein,

[0091] The at least one first signal represents an interference signal of the network-side synchronization signal.

[0092] Figure 10 This is a schematic diagram of a signal jammer according to an application embodiment of this application. The signal jammer includes a signal generation module and a radio frequency module. The signal generation module and the radio frequency module are connected.

[0093] The signal generation module includes a signal generator and a voltage-controlled oscillator (VCO). The first terminal of the signal generator is connected to a power supply module to drive the signal generator. The second terminal of the signal generator is connected to at least one VCO, so that each interference signal generated by the signal generator enters the VCO and is modulated onto the corresponding mobile communication operating frequency band to obtain at least one first signal.

[0094] Here, the signal generator is used to generate interference signals for signal shielding.

[0095] Here, the voltage-controlled oscillator is used to modulate the interference signal generated by the signal generator based on a set of first parameters, thereby generating a corresponding first signal.

[0096] In practical applications, the voltage-controlled oscillator (VCO) of the RF channels can be configured according to the network configuration data of the corresponding operator. For example, to shield the 5G signal between the terminal and the base station, the center frequency of RF channel 1 can be set to 2524.95MHz, and the bandwidth can be selected to be greater than or equal to 14.4MHz (e.g., 15MHz). The center frequency of RF channel 2 can be set to 3449.28MHz, and the bandwidth can be selected to be greater than or equal to 14.4MHz. The center frequency of RF channel 3 can be set to 3509.76MHz, and the bandwidth can be selected to be greater than or equal to 14.4MHz. The center frequency of RF channel 4 can be set to 4849.83MHz, and the bandwidth can be selected to be greater than or equal to 14.4MHz. As communication technology develops, new frequency bands may be identified, such as the 700MHz band. In this case, only RF channel 5 needs to be configured accordingly. Similarly, to shield 4G signals, an additional RF channel corresponding to the 4G signal frequency band can be added.

[0097] Here, the radio frequency (RF) module includes an RF power amplifier module and a transmitting antenna. The first terminal of the RF power amplifier module is connected to a voltage-controlled oscillator (VCO) to amplify the power of each generated first signal. The second terminal of the RF power amplifier module is connected to the transmitting antenna, which transmits the amplified signal, thereby emitting at least one first signal.

[0098] Here, the RF power amplifier module is used to amplify the signal according to the power requirements of different RF channels.

[0099] Here, the transmitting antenna is used to transmit the first signal according to the radio frequency channel.

[0100] In one embodiment, the signal jammer further includes:

[0101] A control module is used to set the at least one set of first parameters.

[0102] Here, the control module is used to set at least one set of first parameters for the signal jammer. The methods for setting each set of first parameters include, but are not limited to: determining the first parameters based on the second parameters, and setting the voltage-controlled oscillator in the signal jammer based on the first parameters before the signal jammer leaves the factory; designing the control circuit through a hardware platform and reserving an interface to receive software control commands in the working scenario; and determining the parameters through a calculation unit based on at least one set of second parameters.

[0103] like Figure 11 The structural schematic diagram of the signal jammer provided in this application embodiment is shown in the reference diagram. Figure 11 The signal jammer includes a control module, a signal generation module, and a radio frequency module, which are cascaded in sequence.

[0104] Here, the control module determines the center frequency and corresponding second bandwidth of each synchronization signal based on the operator's network configuration data, determines each set of second parameters in at least one set of second parameters, and determines at least one set of first parameters based on the at least one set of second parameters. Each set of first parameters includes at least one transmission frequency and a corresponding first bandwidth, used to describe the frequency characteristics of the generated first signal. Based on a set of first parameters, each corresponding first signal can be generated. In this way, the control module completes the division of the radio frequency channel, thereby obtaining the corresponding first signal through modulation.

[0105] Here, the signal generation module is used to generate a signal shielding interference signal, and correspondingly modulates the interference signal generated by the signal generation module to generate a corresponding first signal.

[0106] Here, the radio frequency module is used to amplify the signal according to the power requirements of different radio frequency channels, and transmit the first signal through the transmitting antenna.

[0107] In one embodiment, the control module is configured to:

[0108] Receive the first instruction by setting the interface;

[0109] Based on the first instruction, at least one set of first parameters is determined.

[0110] Figure 12This is a schematic diagram of a signal jammer provided in an application embodiment of this application. The signal jammer utilizes digital circuitry to make its transmission frequency and bandwidth adjustable. The signal jammer includes a hardware platform with a control circuit. The control circuit has a setting interface to receive first instructions from software control. The control circuit sets the transmission frequency and corresponding first bandwidth of each radio frequency channel. Interference signals generated by different radio frequency channels are digitally modulated and converted from digital to analog before being transmitted by the radio frequency module through the transmitting antenna.

[0111] In one embodiment, the at least one set of second parameters is determined based on network configuration data corresponding to at least one operator.

[0112] In one embodiment, the network-side synchronization signal includes at least one of the following:

[0113] SSB;

[0114] PSS;

[0115] SSS;

[0116] PBCH.

[0117] In one embodiment, when the network-side synchronization signal is characterized as SSB, the second bandwidth is determined based on the subcarrier spacing of the SSB.

[0118] It should be noted that the signal jammer provided in the above embodiments is only illustrated by the division of the above program modules when performing signal jamming. In actual applications, the above processing can be assigned to different program modules as needed, that is, the internal structure of the device can be divided into different program modules to complete all or part of the processing described above. In addition, the signal jammer and the signal jamming method embodiments provided in the above embodiments belong to the same concept, and the specific implementation process can be found in the method embodiments, which will not be repeated here.

[0119] Those skilled in the art will understand that all or part of the steps of the above method embodiments can be implemented by hardware related to program instructions. The aforementioned program can be stored in a computer-readable storage medium. When the program is executed, it performs the steps of the above method embodiments. The aforementioned storage medium includes various media capable of storing program code, such as mobile storage devices, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0120] Alternatively, if the units integrated in this application are implemented as software functional modules and sold or used as independent products, they can also be stored in a computer-readable storage medium. Based on this understanding, the technical solutions of the embodiments of this application, or the parts that contribute to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as mobile storage devices, ROM, RAM, magnetic disks, or optical disks.

[0121] In this document, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three cases: A alone, A and B simultaneously, and B alone. Additionally, the term "at least one" in this document means any combination of at least two of any one or more of a plurality of elements. For example, including at least one of A, B, and C can mean including any one or more elements selected from the set consisting of A, B, and C.

[0122] It should be noted that terms such as "first" and "second" are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0123] Furthermore, the technical solutions described in the embodiments of this application can be combined arbitrarily without conflict.

[0124] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A signal shielding method, characterized in that, include: Generate at least one first signal based on each set of first parameters from at least one set of first parameters; The at least one set of first parameters is determined based on at least one set of second parameters of the network-side synchronization signal; each set of first parameters in the at least one set includes a transmission frequency and a corresponding first bandwidth; each set of second parameters in the at least one set includes a center frequency and a corresponding second bandwidth; the at least one set of second parameters is determined based on network configuration data corresponding to at least one operator; At least one first signal is issued; wherein, The at least one first signal represents an interference signal of the network-side synchronization signal.

2. The signal shielding method according to claim 1, characterized in that, The network-side synchronization signal includes at least one of the following: SSB; PSS; SSS; PBCH.

3. The signal shielding method according to claim 1, characterized in that, When the network-side synchronization signal is characterized as SSB, the second bandwidth is determined based on the subcarrier spacing of the SSB.

4. A signal jammer, characterized in that, include: A signal generation module is used to generate at least one first signal based on each of at least one set of first parameters; The at least one set of first parameters is determined based on at least one set of second parameters of the network-side synchronization signal; each set of first parameters in the at least one set includes a transmission frequency and a corresponding first bandwidth; each set of second parameters in the at least one set includes a center frequency and a corresponding second bandwidth; the at least one set of second parameters is determined based on network configuration data corresponding to at least one operator; The radio frequency module is used to transmit the at least one first signal; wherein, The at least one first signal represents an interference signal of the network-side synchronization signal.

5. The signal jammer according to claim 4, characterized in that, The signal jammer also includes: A control module is used to set the at least one set of first parameters.

6. The signal jammer according to claim 5, characterized in that, The control module is used for: Receive the first instruction by setting the interface; Based on the first instruction, at least one set of first parameters is determined.

7. The signal jammer according to any one of claims 4 to 6, characterized in that, The network-side synchronization signal includes at least one of the following: SSB; PSS; SSS; PBCH.

8. The signal jammer according to any one of claims 4 to 6, characterized in that, When the network-side synchronization signal is characterized as SSB, the second bandwidth is determined based on the subcarrier spacing of the SSB.

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