Interference signal transmission method and apparatus, electronic equipment, readable storage medium

Abstract

This application provides a method and apparatus for transmitting interference signals, an electronic device, and a readable storage medium. The method for transmitting interference signals includes: acquiring the power received strength of a target signal that is correctly demodulated in a wireless communication system; wherein the target signal is a signal that a terminal needs to demodulate when accessing the wireless communication system; determining the transmission parameters of an interference signal based on the power received strength of the correctly demodulated target signal; and transmitting the interference signal based on the transmission parameters of the interference signal, so that a terminal located in the target area cannot correctly demodulate the target signal.

Description

Technical Field

[0001] This application relates to the field of communication technology, and in particular to methods and apparatus for transmitting interference signals, electronic devices, and readable storage media. Background Technology

[0002] With the rapid development of wireless communication technology, the deployment of base stations for wireless communication systems is increasing. Furthermore, the application of systems like 5G, with more frequency band resources and the use of Massive MIMO (Multiple Input Multiple Output) technology, has expanded the coverage of wireless signals. This allows terminals that previously could not access ground-based wireless communication systems (such as inside an aircraft cabin) to do so. However, in certain scenarios, terminal access to ground-based wireless communication systems can cause serious consequences or significant safety hazards. For example, inside an aircraft cabin, during takeoff and landing, the distance to the ground is relatively short. If a passenger's terminal is not properly switched off, it will access the ground-based wireless communication system. Because current wireless communication protocols have relatively low requirements for the radio frequency performance of passenger terminals, and some terminals have poor power amplifiers and filters, spurious signals are relatively strong in certain frequency bands. According to wireless communication protocols, the highest spurious signal requirement for terminals is -50dBm / MHz. These spurious signals can interfere with the normal operation of onboard equipment such as altimeters, leading to alarm events and posing a significant threat to aviation safety. Summary of the Invention

[0003] This application provides an interference signal transmission method and apparatus, an electronic device, and a readable storage medium.

[0004] In a first aspect, embodiments of this application provide a method for transmitting interference signals, including:

[0005] Obtain the power received strength of the target signal that is correctly demodulated in the wireless communication system; wherein, the target signal is the signal that the terminal needs to demodulate when accessing the wireless communication system;

[0006] The transmission parameters of the interference signal are determined based on the power received strength of the correctly demodulated target signal.

[0007] The interference signal is transmitted based on the transmission parameters of the interference signal, so that the terminal located in the target area cannot correctly demodulate the target signal.

[0008] Secondly, embodiments of this application provide an interference signal transmitting device, comprising:

[0009] The acquisition module is used to acquire the power received strength of the target signal that is correctly demodulated in the wireless communication system; wherein, the target signal is the signal that needs to be correctly demodulated for the terminal to successfully access the wireless communication system;

[0010] The determination module is used to determine the transmission parameters of the interference signal based on the power received strength of the correctly demodulated target signal;

[0011] The transmitting module is used to transmit the interference signal based on the transmission parameters of the interference signal, so that the terminal located in the target area cannot correctly demodulate the target signal.

[0012] Thirdly, embodiments of this application provide an electronic device, including:

[0013] At least one processor;

[0014] The memory stores at least one program, which, when executed by the at least one processor, implements any of the above-described methods for transmitting interference signals.

[0015] Fourthly, embodiments of this application provide a readable storage medium storing a computer program, which, when executed by a processor, implements any of the above-described methods for transmitting interference signals.

[0016] The interference signal transmission method provided in this application embodiment is based on the fact that the correct demodulation of the target signal by the terminal is a prerequisite for the terminal to successfully access the wireless communication system. Therefore, by transmitting interference signals, the terminal located in the target area is unable to correctly demodulate the target signal, which in turn prevents the terminal located in the target area from successfully accessing the wireless communication system, thereby avoiding serious consequences or major security risks caused by the terminal accessing the wireless communication system. Attached Figure Description

[0017] Figure 1 A flowchart illustrating an embodiment of the interference signal transmission method provided in this application;

[0018] Figure 2 A schematic diagram of the time-frequency domain location of the system information block (MIB, Master Information Block) signal provided in Example 1 of this application embodiment;

[0019] Figure 3 A schematic diagram of the time-frequency domain location of the interference signal provided in Example 1 of this application. Figure 1 ;

[0020] Figure 4 A schematic diagram of the time-frequency domain location of the interference signal provided in Example 1 of this application. Figure 2 ;

[0021] Figure 5 A schematic diagram of the time-frequency domain location of the MIB signal provided in Example 2 of this application embodiment;

[0022] Figure 6 A schematic diagram of the time-frequency domain location of the interference signal provided in Example 2 of this application embodiment;

[0023] Figure 7 A block diagram of an interference signal transmitting device provided in another embodiment of this application. Detailed Implementation

[0024] To enable those skilled in the art to better understand the technical solutions of this application, the interference signal transmission method and apparatus, electronic equipment, and readable storage medium provided in this application will be described in detail below with reference to the accompanying drawings.

[0025] Exemplary embodiments will be described more fully below with reference to the accompanying drawings; however, these exemplary embodiments may be embodied in different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this application will be thorough and complete, and will enable those skilled in the art to fully understand the scope of this application.

[0026] Where there is no conflict, the various embodiments of this application and the features thereof may be combined with each other.

[0027] As used herein, the term “and / or” includes any and all combinations of at least one related enumerated entry.

[0028] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application. As used herein, the singular forms “a” and “the” are also intended to include the plural forms unless the context clearly indicates otherwise. It will also be understood that when the terms “comprising” and / or “made of” are used in this specification, the presence of the stated feature, integral, step, operation, element, and / or component is specified, but the presence or addition of at least one other feature, integral, step, operation, element, component, and / or group thereof is not excluded.

[0029] Unless otherwise specified, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art. It will also be understood that terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant art and this application, and will not be interpreted as having an idealized or overly formal meaning, unless expressly so defined herein.

[0030] Figure 1 This is a flowchart of an interference signal transmission method provided in one embodiment of this application.

[0031] Firstly, referring to Figure 1 One embodiment of this application provides a method for transmitting interference signals, including:

[0032] Step 100: Obtain the power received strength of the target signal that is correctly demodulated in the wireless communication system; wherein, the target signal is the signal that the terminal needs to demodulate when accessing the wireless communication system.

[0033] In this application embodiment, for the scenario where the target area is the interior of the aircraft cabin, the terminal refers to the terminal equipment carried by passengers and flight attendants on the aircraft, but does not include the onboard equipment of the aircraft.

[0034] In some exemplary embodiments, obtaining the power received strength of the target signal that is correctly demodulated in a wireless communication system includes:

[0035] Calculate the correlation between the received wireless signal and the downlink synchronization signal within the target frequency band of the wireless communication system;

[0036] Time and frequency synchronization information is determined based on the most correlated wireless signals;

[0037] Demodulate the target signal based on the time and frequency synchronization information;

[0038] If the target signal is demodulated correctly, obtain the power received strength of the correctly demodulated target signal.

[0039] In the embodiments of this application, the wireless communication system can be any wireless communication system that the terminal may access, such as 2G wireless communication system, 3G wireless communication system, 4G wireless communication system, 5G wireless communication system, and future wireless communication systems, etc.

[0040] In the embodiments of this application, the target frequency band refers to the communication frequency band that the target signal may occupy in the communication frequency band of the wireless communication system. Different wireless communication systems correspond to different target frequency bands. A wireless communication system may have one, two or more target frequency bands.

[0041] In a wireless communication system that includes two or more target frequency bands, it is necessary to traverse all target frequency bands to determine on which target frequency bands the target signal can be correctly demodulated.

[0042] In the embodiments of this application, a wireless communication system may correspond to one, two, or more downlink synchronization signals. When a wireless communication system includes two or more downlink synchronization signals, it is necessary to traverse all downlink synchronization signals to determine which downlink synchronization signals are being transmitted by the wireless communication system.

[0043] In this embodiment of the application, the target signal being the signal that the terminal needs to demodulate to access the wireless communication system means that the terminal's correct demodulation of the target signal is a prerequisite for the terminal to successfully access the wireless communication system. In other words, the terminal can only successfully access the wireless communication system if it correctly demodulates the target signal.

[0044] In the embodiments of this application, the target signals corresponding to different wireless communication systems may be the same or different. For example, the target signals corresponding to 4G wireless communication systems and 5G wireless communication systems are MIB signals.

[0045] In some exemplary embodiments, when the target area is the interior of the aircraft cabin, the wireless signal received in the target frequency band of the wireless communication system can be received by a first antenna located inside the aircraft cabin or by a first antenna located outside the aircraft cabin.

[0046] In some exemplary embodiments, the method further includes: if the target signal is demodulated correctly, obtaining the frequency domain position occupied by the correctly demodulated target signal.

[0047] In some exemplary embodiments, the method further includes: if the target signal is demodulated correctly, obtaining the time domain location occupied by the correctly demodulated target signal.

[0048] The power received strength in the embodiments of this application can refer to the power received strength per unit spectrum.

[0049] The embodiments of this application do not limit the unit spectrum. For example, the unit spectrum can refer to Hertz (Hz) or Resource Element (RE).

[0050] Step 101: Determine the transmission parameters of the interference signal based on the power received strength of the correctly demodulated target signal.

[0051] In some exemplary embodiments, determining the transmission parameters of the interference signal based on the power received strength of the correctly demodulated target signal includes: determining the transmission parameters of the interference signal based on the power received strength of the correctly demodulated target signal and the frequency domain position occupied by the correctly demodulated target signal.

[0052] In some exemplary embodiments, determining the transmission parameters of the interference signal based on the power received strength of the correctly demodulated target signal and the frequency domain position occupied by the correctly demodulated target signal includes: determining the transmission parameters of the interference signal based on the power received strength of the correctly demodulated target signal, the frequency domain position occupied by the correctly demodulated target signal, and the time domain position occupied by the correctly demodulated target signal.

[0053] In some exemplary embodiments, the transmission parameters include transmission power and at least one of the following:

[0054] Frequency domain bandwidth, number, frequency domain location, and time domain location.

[0055] In some exemplary embodiments, the transmit power, frequency bandwidth, and number of interfering signals are determined based on the power received strength of the correctly demodulated target signal.

[0056] In some exemplary embodiments, determining the transmission parameters of the interference signal based on the power received strength of the correctly demodulated target signal includes:

[0057] The transmit power, frequency bandwidth, and number of the interference signals are determined under constraints based on the power received strength of the correctly demodulated target signal.

[0058] The constraint condition is that the difference between the lowest received signal-to-noise ratio (SNR) of the terminal in the target area that correctly demodulates the target signal and the actual received SNR of the target signal is greater than or equal to a preset threshold. The actual received SNR is calculated based on the power received strength of the correctly demodulated target signal.

[0059] In some exemplary embodiments, for scenarios where the target area is inside the aircraft cabin, the actual received signal-to-noise ratio is the difference between the power received strength of the correctly demodulated target signal and the transmission power of the interference signal. For example, in the case where the first antenna is located inside the aircraft cabin, since the power received strength of the target signal measured by the first antenna is equal to the power received strength of the target signal received by the terminal inside the aircraft cabin, it is not necessary to consider the impact of the maximum penetration loss of the wireless signal transmitted from outside the aircraft cabin to inside the aircraft cabin.

[0060] Alternatively, the actual received signal-to-noise ratio is the difference between the power received by the correctly demodulated target signal and the transmission power of the interfering signal, and the maximum penetration loss of the wireless signal transmitted from outside the aircraft cabin to inside the aircraft cabin. For example, in the case where the first antenna is located outside the aircraft cabin, since the power received by the target signal measured by the first antenna is not equal to the power received by the terminal inside the aircraft cabin, the impact of the maximum penetration loss of the wireless signal transmitted from outside the aircraft cabin to inside the aircraft cabin needs to be considered.

[0061] In some exemplary embodiments, for scenarios where the target area is the interior of an aircraft cabin, the actual received signal-to-noise ratio of the target signal can be expressed as: Therefore, the constraints can be expressed using the formula. To indicate;

[0062] Among them, SNR minThe minimum received signal-to-noise ratio (SNR) required for the terminal to correctly demodulate the target signal, in dB; η is the received power intensity of the correctly demodulated target signal, in dBm / Hz; N is the number of interfering signals; P i W represents the transmit power of the i-th interference signal, expressed in dBm / Hz. i λ is the frequency domain bandwidth of the i-th interference signal, in Hz; B is the frequency domain bandwidth occupied by the target signal correctly demodulated in the wireless communication system, in Hz; λ is 0 or 1, and the specific value of λ is related to the position of the first antenna. For example, when the first antenna is located outside the aircraft cabin, λ is 1; when the first antenna is located inside the aircraft cabin, λ is 0; PL is the maximum penetration loss of the wireless signal from outside the aircraft cabin to inside the aircraft cabin, in dB; X is a preset threshold.

[0063] In this embodiment of the application, an interference signal transmitted on a subcarrier is considered as an interference signal.

[0064] In some exemplary embodiments, the sum of the frequency domain bandwidths of the N interfering signals is the frequency domain bandwidth of the target signal that is correctly demodulated.

[0065] The above formula can be used to obtain the transmission power and frequency bandwidth of each interference signal, as well as the number of interference signals.

[0066] In some exemplary embodiments, the frequency domain position of the interference signal is determined based on the frequency domain position occupied by the correctly demodulated target signal.

[0067] In some exemplary embodiments, the frequency domain location of the interference signal includes: part or all of the frequency domain locations occupied by the correctly demodulated target signal.

[0068] In some exemplary embodiments, the time-domain position of the interference signal can be determined based on the time-domain position occupied by the correctly demodulated target signal, or the time-domain position of the interference signal can be directly determined as the total time-domain position of the wireless communication system.

[0069] In some exemplary embodiments, the temporal location of the interference signal includes:

[0070] The time domain location occupied by the correctly demodulated target signal;

[0071] Alternatively, the entire time-domain location of the wireless communication system;

[0072] Alternatively, the time-domain position occupied by the correctly demodulated target signal, and the time-domain position calculated based on the time-domain position occupied by the correctly demodulated target signal and the transmission period of the target signal.

[0073] The embodiments of this application do not limit the specific form of the interference signal. For example, the interference signal may be a fixed sequence or a randomly generated sequence.

[0074] The embodiments of this application do not limit the content of the transmitted interference signal, such as square wave, narrowband pulse, etc.

[0075] Step 102: Send the interference signal based on the transmission parameters of the interference signal, so that the terminal located in the target area cannot correctly demodulate the target signal.

[0076] In some exemplary embodiments, the current area is an area where terminals are not allowed to access the wireless communication system under specific scenarios. For example, the target area is the interior of an aircraft cabin, where terminals inside the aircraft cabin are not allowed to access the wireless communication system during takeoff and landing.

[0077] In some exemplary embodiments, transmitting an interference signal based on the transmission parameters of the interference signal includes:

[0078] The interference signal is transmitted via a second antenna located inside the aircraft cabin, based on the transmission parameters of the interference signal.

[0079] In this embodiment of the application, since the purpose of sending the interference signal is to affect the terminal receiving the target signal inside the aircraft cabin, it is reasonable to place the second antenna used to send the interference signal inside the aircraft cabin in order to reduce the transmission power of the interference signal and save resources.

[0080] In this embodiment of the application, when the first antenna is located inside the aircraft cabin, the first antenna and the second antenna can be implemented using the same antenna.

[0081] In some exemplary embodiments, transmitting an interference signal based on the transmission parameters of the interference signal includes:

[0082] Based on the transmission power, frequency bandwidth, and number of the interference signals, a corresponding number of interference signals are transmitted at the corresponding time and frequency domain positions.

[0083] The interference signal transmission method provided in this application embodiment is based on the fact that the correct demodulation of the target signal by the terminal is a prerequisite for the terminal to successfully access the wireless communication system. Therefore, by transmitting interference signals, the terminal located in the target area is unable to correctly demodulate the target signal, which in turn prevents the terminal located in the target area from successfully accessing the wireless communication system, thereby avoiding serious consequences or major security risks caused by the terminal accessing the wireless communication system.

[0084] The following two specific examples illustrate the detailed implementation process of the interference signal transmission method of the embodiments of this application. The examples listed are only for illustrative purposes and are not intended to limit the protection scope of the embodiments of this application.

[0085] Example 1

[0086] In a certain scenario, the terrestrial wireless communication system is a standard Frequency Division Duplex (FDD) Long Term Evolution (LTE) wireless communication system based on the 3rd Generation Partnership Project (3GPP). The uplink operating frequency band of this wireless communication system is 1755-1785 MHz, and the downlink operating frequency band is 1850-1880 MHz. Some wireless communication systems have two downlink operating frequency bands: 1850-1860 MHz and 1860-1880 MHz.

[0087] Figure 2 This is a schematic diagram showing the time-frequency domain location of the MIB signal provided in Example 1 of this application. Figure 2 As shown, the downlink of the LTE wireless communication system adopts a 4-port Cell-Specific Reference Signal (CRS) method. The downlink synchronization channels of the LTE wireless communication system include: the Primary Synchronization Channel (P-SCH) and the Secondary Synchronization Channel (S-SCH). The MIB signal is transmitted on the Physical Broadcast Channel (PBCH), such as... Figure 2 As shown, according to the protocol, the PBCH occupies 72 subcarriers (i.e., 72REs) of the center frequency point of the downlink operating frequency band of the LTE wireless communication system in the frequency domain, specifically located at 1869.46~1870.54MHz. The frequency band length occupied by the PBCH is 72×15KHz=1080KHz, which is evenly distributed on both sides of the center frequency point of the FDD LTE wireless communication system.

[0088] The system receives wireless signals in the 1860–1880 MHz band of the LTE wireless communication system via a first antenna located outside the aircraft cabin. The correlation between the received wireless signals and the downlink synchronization signal is calculated. Time and frequency synchronization information is determined based on the wireless signal with the highest correlation. The MIB signal carried by the PBCH is demodulated based on the time and frequency synchronization information. Assuming that the cyclic redundancy check (CRC) code of the PBCH is correctly demodulated in the 1869.46–1870.54 MHz band, it indicates that the MIB signal can be correctly demodulated. Therefore, the bandwidth of the FDD LTE wireless communication system is 20 MHz, and the received power intensity per hertz of the correctly demodulated MIB signal is -126 dBm.

[0089] Figure 3 A schematic diagram of the time-frequency domain location of the interference signal provided in Example 1 of this application. Figure 1 .like Figure 3 As shown, assuming the terminal correctly demodulates the PBCH with a minimum received signal-to-noise ratio (SNR) of -5dB, PL of 20dB, λ = 1, and the interference signal frequency band is set to the entire 1.08M bandwidth, the preset threshold is 3dBm.

[0090] The transmitted power of the interference signal per unit frequency can be calculated using the formula:

[0091]

[0092] Where Pi is the transmit power of the interference signal per Hz. In this example, each RE corresponds to one interference signal, and the transmit power of the interference signals corresponding to all REs is equal.

[0093] The above formula shows that the transmit power of the interference signal per unit frequency needs to be greater than or equal to -138dBm / Hz, which corresponds to a transmit power of interference signal greater than -97dBm per RE.

[0094] The time-domain transmission location of the interference signal is selected to be transmitted throughout the entire time domain, such as... Figure 3 As shown.

[0095] Furthermore, the time-domain location for transmitting the interference signal is selected to be transmitted only within the time period of the PBCH transmission, such as... Figure 4As shown, the specific PBCH transmission time period can be obtained from the MIB signal. In this example, the time period of the MIB signal is 10ms, and the length of each time period is 4 orthogonal frequency division multiplexing (OFDM) symbols, approximately 4 / 14 = 0.286ms.

[0096] After sending the interference signal, the terminals in the aircraft cabin will be unable to access the ground-based FDD LTE wireless communication system, thus preventing them from interfering with the aircraft's altimeter and other airborne equipment.

[0097] Example 2

[0098] In a certain scenario, the terrestrial wireless communication system is a 3GPP standard Time Division Duplex (TDD) New Radio (NR) wireless communication system, with the downlink operating frequency band being 4800–4900 MHz.

[0099] Figure 5 A schematic diagram of the time-frequency domain location of the MIB signal provided in Example 2 of this application embodiment, as shown below. Figure 5 As shown, the downlink synchronization signals of an LTE wireless communication system include: the primary synchronization signal (PSS) and the secondary synchronization signal (SSS). The MIB signal is carried and transmitted in the PBCH, as shown below. Figure 5 As shown, according to the protocol, the time-frequency domain mapping of the PBCH's single sideband (SSB) block is on 240 subcarriers of the downlink operating frequency band of the NR wireless communication system, specifically located at 4800~4807.2MHz. The frequency band length occupied by the PBCH is 240×30KHz=7200KHz.

[0100] The system receives wireless signals in the 4800–4900 MHz frequency band of the NR wireless communication system via a first antenna installed inside the aircraft cabin; calculates the correlation between the received wireless signals and the downlink synchronization signal; determines the time and frequency synchronization information based on the wireless signal with the highest correlation; and demodulates the MIB signal carried by the PBCH based on the time and frequency synchronization information. Assuming that the CRC of the PBCH demodulation in the 4800–4807.2 MHz frequency band is correct, it indicates that the MIB signal can be correctly demodulated. It can be concluded that the bandwidth of the NR wireless communication system is 100 MHz, and the power received per hertz of the correctly demodulated MIB signal is -145 dBm.

[0101] Figure 6This is a schematic diagram showing the time-frequency domain location of the interference signal provided in Example 2 of this application. (See attached diagram.) Figure 6 As shown, assuming the minimum received signal-to-noise ratio for correct PBCH demodulation by the terminal is set to -6dB, λ=0, PL is 20dB, the interference signal frequency band is set to the entire 7.2M bandwidth, and the preset threshold is 5dBm.

[0102] The transmitted power of the interference signal per unit frequency can be calculated using the formula:

[0103]

[0104] Among them, P i Let represent the transmit power of the interference signal per Hz. In this example, each RE corresponds to one interference signal, and the transmit power of the interference signals corresponding to all REs is equal.

[0105] The above formula shows that the transmit power of the interference signal per unit frequency needs to be greater than or equal to -134dBm / Hz, which corresponds to a transmit power of interference signal greater than -89dBm per RE.

[0106] The time-domain location for transmitting interference signals is selected to be transmitted only within the time period of the SSB block of the PBCH, such as... Figure 6 As shown, the specific PBCH transmission time period can be obtained from the MIB signal. There are 8 SSB blocks in each SSB group. In this example, the time period of the MIB signal is 20ms, and the length of the time period of each SSB block is 3 OFDM symbols, approximately 4 / 28 = 0.143ms.

[0107] After sending the interference signal, the terminals in the aircraft cabin will be unable to access the ground-based FDD LTE wireless communication system, thus preventing them from interfering with the aircraft's altimeter and other airborne equipment.

[0108] Secondly, embodiments of this application provide an electronic device, including:

[0109] At least one processor;

[0110] The memory stores at least one program, which, when executed by at least one processor, implements any of the above-mentioned methods for transmitting interference signals.

[0111] Among them, the processor is a device with data processing capabilities, including but not limited to the central processing unit (CPU); the memory is a device with data storage capabilities, including but not limited to random access memory (RAM, more specifically such as SDRAM, DDR, etc.), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), and flash memory (FLASH).

[0112] In some embodiments, the processor and memory are interconnected via a bus, and thus connected to other components of the computing device.

[0113] Thirdly, embodiments of this application provide a readable storage medium storing a computer program, which, when executed by a processor, implements any of the above-described methods for transmitting interference signals.

[0114] Figure 7 A block diagram of an interference signal transmitting device provided in another embodiment of this application.

[0115] Fourthly, refer to Figure 7 Another embodiment of this application provides an interference signal transmitting device, comprising:

[0116] The acquisition module 701 is used to acquire the power received strength of the target signal that is correctly demodulated in the wireless communication system; wherein, the target signal is the signal that the terminal needs to demodulate when accessing the wireless communication system;

[0117] The determination module 702 is used to determine the transmission parameters of the interference signal based on the power received strength of the correctly demodulated target signal;

[0118] The transmitting module 703 is used to transmit the interference signal based on the transmission parameters of the interference signal, so that the terminal located in the target area cannot correctly demodulate the target signal.

[0119] In some exemplary embodiments, the acquisition module 701 is further configured to: acquire the frequency domain position occupied by the correctly demodulated target signal;

[0120] The determining module 702 is specifically used to: determine the transmission parameters of the interference signal based on the power received strength of the correctly demodulated target signal and the frequency domain position occupied by the correctly demodulated target signal.

[0121] In some exemplary embodiments, the acquisition module 701 is further configured to: acquire the time domain position occupied by the correctly demodulated target signal;

[0122] The determining module 702 is specifically used to: determine the transmission parameters of the interference signal based on the power received strength of the correctly demodulated target signal, the frequency domain position occupied by the correctly demodulated target signal, and the time domain position occupied by the correctly demodulated target signal.

[0123] In some exemplary embodiments, the transmission parameters include transmission power and at least one of the following:

[0124] Frequency domain bandwidth, number, frequency domain location, and time domain location.

[0125] In some exemplary embodiments, the determining module 702 is specifically used for:

[0126] The transmit power, frequency bandwidth, and number of the interference signals are determined under constraints based on the power received strength of the correctly demodulated target signal.

[0127] The constraint condition is that the difference between the lowest received signal-to-noise ratio (SNR) of the terminal in the target area that correctly demodulates the target signal and the actual received SNR of the target signal is greater than or equal to a preset threshold. The actual received SNR is calculated based on the power received strength of the correctly demodulated target signal.

[0128] In some exemplary embodiments, the frequency domain position of the interference signal includes: part or all of the frequency domain positions occupied by the correctly demodulated target signal.

[0129] In some exemplary embodiments, the time-domain location of the interference signal includes:

[0130] The time domain location occupied by the correctly demodulated target signal;

[0131] Alternatively, the entire time-domain location of the wireless communication system;

[0132] Alternatively, the time-domain position occupied by the correctly demodulated target signal, and the time-domain position calculated based on the time-domain position occupied by the correctly demodulated target signal and the transmission period of the target signal.

[0133] In some exemplary embodiments, the interference signal is a fixed sequence or a randomly generated sequence.

[0134] In some exemplary embodiments, the target area is the interior of the aircraft cabin.

[0135] In some exemplary embodiments, the sending module 703 is specifically used for:

[0136] The interference signal is transmitted via a second antenna located inside the aircraft cabin, based on the transmission parameters of the interference signal.

[0137] The specific implementation process of the interference signal transmitting device in this application embodiment is the same as the specific implementation process of the interference signal transmitting method in the foregoing embodiment.

[0138] It will be understood by those skilled in the art that all or some of the steps, systems, or apparatuses disclosed above, and their functional modules / units, can be implemented as software, firmware, hardware, or suitable combinations thereof. In hardware implementations, the division between functional modules / units mentioned above does not necessarily correspond to the division of physical components; for example, a physical component may have multiple functions, or a function or step may be performed collaboratively by several physical components. Some or all physical components may be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application-specific integrated circuit (ASIC). Such software may be distributed on a computer-readable medium, which may include computer storage media (or non-transitory media) and communication media (or transient media). As is known to those skilled in the art, the term computer storage media includes volatile and non-volatile, removable and non-removable media implemented in any method or technology for storing information (such as computer-readable instructions, data structures, program modules, or other data). Computer storage media include, but are not limited to, RAM, ROM, EEPROM, flash memory or other memory technologies, CD-ROM, digital versatile disc (DVD) or other optical disc storage, magnetic cartridges, magnetic tape, disk storage or other magnetic storage, or any other medium that can be used to store desired information and can be accessed by a computer. Furthermore, it is well known to those skilled in the art that communication media typically contain computer-readable instructions, data structures, program modules, or other data in modulated data signals such as carrier waves or other transmission mechanisms, and may include any information delivery medium.

[0139] Example embodiments have been disclosed herein, and while specific terminology has been used, it is for illustrative purposes only and should be construed as such, and is not intended to be limiting. In some instances, it will be apparent to those skilled in the art that features, characteristics, and / or elements described in connection with particular embodiments may be used alone, or in combination with features, characteristics, and / or elements described in connection with other embodiments, unless otherwise expressly indicated. Therefore, those skilled in the art will understand that various changes in form and detail may be made without departing from the scope of this application as set forth by the appended claims.

Claims

1. A method for transmitting an interference signal, comprising: Obtain the power received strength of the target signal that is correctly demodulated in the wireless communication system; wherein, the target signal is the signal that the terminal needs to demodulate when accessing the wireless communication system; The transmission parameters of the interference signal are determined based on the power received strength of the correctly demodulated target signal. The interference signal is transmitted based on the transmission parameters of the interference signal, so that the terminal located in the target area cannot correctly demodulate the target signal; The transmission parameters include transmission power and at least one of the following: frequency domain bandwidth, number, frequency domain position, and time domain position; The step of determining the transmission parameters of the interference signal based on the power received strength of the correctly demodulated target signal includes: determining the transmission power, frequency bandwidth, and number of the interference signal under the constraints of the constraints based on the power received strength of the correctly demodulated target signal. The constraint condition is that the difference between the lowest received signal-to-noise ratio (SNR) of the terminal in the target area that correctly demodulates the target signal and the actual received SNR of the target signal is greater than or equal to a preset threshold. The actual received SNR is calculated based on the power received strength of the correctly demodulated target signal.

2. The interference signal transmission method of claim 1, before determining the transmission parameters of the interference signal according to the received strength of the power of the correctly demodulated target signal, the method further comprises: Obtain the frequency domain position occupied by the correctly demodulated target signal; The step of determining the transmission parameters of the interference signal based on the power received strength of the correctly demodulated target signal includes: determining the transmission parameters of the interference signal based on the power received strength of the correctly demodulated target signal and the frequency domain position occupied by the correctly demodulated target signal.

3. The interference signal transmission method according to claim 2, before the step of determining the transmission parameters of the interference signal according to the power received intensity of the correctly demodulated target signal and the frequency domain position occupied by the correctly demodulated target signal, the method further comprises: Obtain the time domain location occupied by the correctly demodulated target signal; The step of determining the transmission parameters of the interference signal based on the power received strength of the correctly demodulated target signal and the frequency domain position occupied by the correctly demodulated target signal includes: determining the transmission parameters of the interference signal based on the power received strength of the correctly demodulated target signal, the frequency domain position occupied by the correctly demodulated target signal, and the time domain position occupied by the correctly demodulated target signal.

4. The interference signal transmission method according to claim 1, wherein The frequency domain position of the interference signal includes: part or all of the frequency domain positions occupied by the correctly demodulated target signal.

5. The interference signal transmission method according to claim 1, wherein The time-domain location of the interference signal includes: The time domain location occupied by the correctly demodulated target signal; Alternatively, the entire time-domain location of the wireless communication system; Alternatively, the time-domain position occupied by the correctly demodulated target signal, and the time-domain position calculated based on the time-domain position occupied by the correctly demodulated target signal and the transmission period of the target signal.

6. The method for transmitting interference signals according to any one of claims 1-3, wherein, The interference signal is a fixed sequence or a randomly generated sequence.

7. The method for transmitting interference signals according to any one of claims 1-3, wherein, The target area is the interior of the aircraft cabin.

8. The interference signal transmission method according to claim 7, wherein, The transmission of the interference signal based on the transmission parameters of the interference signal includes: The interference signal is transmitted via a second antenna located inside the aircraft cabin, based on the transmission parameters of the interference signal.

9. An interference signal transmitting device, comprising: The acquisition module is used to acquire the power received strength of the target signal that is correctly demodulated in the wireless communication system; wherein, the target signal that is correctly demodulated is the signal that the terminal needs to correctly demodulate to successfully access the wireless communication system; The determination module is used to determine the transmission parameters of the interference signal based on the power received strength of the correctly demodulated target signal; The transmitting module is used to transmit the interference signal based on the transmission parameters of the interference signal, so that the terminal located in the target area cannot correctly demodulate the target signal; The transmission parameters include transmission power and at least one of the following: frequency domain bandwidth, number, frequency domain position, and time domain position; The determining module is specifically used to determine the transmission power, frequency domain bandwidth, and number of the interference signal under the constraints of the power received strength of the correctly demodulated target signal. The constraint condition is that the difference between the lowest received signal-to-noise ratio (SNR) of the terminal in the target area that correctly demodulates the target signal and the actual received SNR of the target signal is greater than or equal to a preset threshold. The actual received SNR is calculated based on the power received strength of the correctly demodulated target signal.

10. An electronic device, comprising: At least one processor; A memory storing at least one program that, when executed by the at least one processor, implements the interference signal transmission method according to any one of claims 1-8.

11. A readable storage medium storing a computer program that, when executed by a processor, implements the interference signal transmission method according to any one of claims 1-8.

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