Method and device for interfering LTE (Long Term Evolution) system, equipment and storage medium

Abstract

The embodiment of the invention relates to the field of signal processing, in particular to a method and a device for interfering an LTE (Long Term Evolution) system, equipment and a storage medium, which are used for determining a target signal position of a target pilot signal of at least one target interference cell in a time-frequency resource grid. And generating a corresponding interference pilot signal according to the target signal position of each target interference cell and the pilot signal generation rule. And for each target interference cell, transmitting a corresponding interference pilot signal at an interference signal position of the time-frequency resource grid, the interference signal position comprising a target signal position. According to the embodiment of the invention, the pilot signal which is the same as the interference cell is accurately constructed and transmitted, strong non-white noise interference is made for the channel estimation information of the terminal side, and accurate shielding of the wireless signal of the target interference cell is realized.

Description

TECHNICAL FIELD

[0001] Embodiments of the present application relate to the field of signal processing, and relate to but are not limited to a method and device for interfering with an LTE system, equipment, and a storage medium. BACKGROUND

[0002] In certain specific authorized scenarios, such as a state-permitted confidential meeting room, an examination center, a prison, and the like, a mobile phone shield (hereinafter referred to as a "shield" or an interferer) is placed to interfere with the wireless communication signals in the specific area, thereby isolating the communication between the wireless communication transceivers such as mobile phones and handheld devices in the area and external base stations. The related art has problems of poor shielding effect or inaccurate shielding target when interfering with the wireless communication signals. SUMMARY

[0003] Therefore, the method and device for interfering with an LTE system, equipment, and a storage medium provided by embodiments of the present application aim to accurately shield signals and improve the signal shielding effect.

[0004] The method and device for interfering with an LTE system, equipment, and a storage medium provided by embodiments of the present application are implemented as follows: In an aspect of embodiments of the present application, a method for interfering with an LTE system is provided, and the method comprises the following steps. determining a target signal position of a target pilot signal of at least one target interference cell in a time-frequency resource grid; generating a corresponding interference pilot signal according to the target signal position of each target interference cell and a pilot signal generation rule; for each target interference cell, transmitting the corresponding interference pilot signal at an interference signal position of the time-frequency resource grid, and the interference signal position comprises the target signal position.

[0005] In a possible implementation manner, the method further comprises the following steps. transmitting a random signal or a zero-power signal at a signal position other than the interference signal position of the time-frequency resource grid.

[0006] In a possible implementation manner, the generating of the corresponding interference pilot signal according to the target signal position of each target interference cell and the pilot signal generation rule comprises the following steps. determining whether the target signal positions corresponding to the target interference cells are the same; in a case where the target signal position corresponds to only one target interference cell, generating the interference pilot signal of the target interference cell according to the pilot signal generation rule of the target interference cell corresponding to the target signal position, and the interference pilot signal is the same as the target pilot signal of the target interference cell.

[0007] In one possible implementation, corresponding interference pilot signals are generated based on the target signal location of each target interfering cell and the pilot signal generation rules, including: If the number of target interfering cells corresponding to the target signal location is greater than 1, a corresponding sub-pilot signal is generated according to the pilot signal generation rule of each target interfering cell corresponding to the target signal location. The superposition result of each sub-pilot signal is used as the interference pilot signal for each target interference cell corresponding to the target signal location.

[0008] In one possible implementation, determining whether the target signal locations corresponding to each target interfering cell are the same includes: Calculate the modulo-3 result of the cell ID of each target interfering cell; The target signal locations of the target interference cells with the same modulo-3 result are the same.

[0009] In one possible implementation, for each target interfering cell, a corresponding interfering pilot signal is transmitted at the location of the interfering signal in the time-frequency resource grid, including: Determine the number of first transmission ports corresponding to each target interference cell. The number of first transmission ports is the number of ports in the target interference cell that transmit the target pilot signal. For each target interference cell, the location of the corresponding interference signal is determined by the number of the second transmission ports, where the number of the second transmission ports is greater than or equal to the number of the first transmission ports. At the location of the interference signal corresponding to each target interference cell in the time-frequency resource grid, transmit the corresponding interference pilot signal.

[0010] In one possible implementation, transmitting a corresponding interference pilot signal at the location of the interference signal in the time-frequency resource grid further includes: The number of second transmission ports is determined based on the number of first transmission ports corresponding to each target interference cell.

[0011] Another aspect of the embodiments of this application provides an apparatus for interfering with an LTE system, the apparatus comprising: The location determination module is used to determine the location of the target pilot signal of at least one target interfering cell in the time-frequency resource grid; The signal generation module is used to generate corresponding interference pilot signals based on the target signal location of each target interference cell and the pilot signal generation rules. The signal transmission module is used to transmit the corresponding interference pilot signal at the interference signal location in the time-frequency resource grid for each target interference cell. The interference signal location includes the target signal location.

[0012] In one possible implementation, the device further includes: The signal jamming module is used to transmit random signals or zero-power signals at signal locations other than the jamming signal locations in the time-frequency resource grid.

[0013] In one possible implementation, the signal generation module is further used for: Determine whether the target signal locations corresponding to each interfering cell are the same; When the target signal location corresponds to only one target interfering cell, an interfering pilot signal for the target interfering cell is generated according to the pilot signal generation rules of the target interfering cell corresponding to the target signal location. The interfering pilot signal is the same as the target pilot signal of the target interfering cell.

[0014] In one possible implementation, the signal generation module is further used for: If the number of target interfering cells corresponding to the target signal location is greater than 1, a corresponding sub-pilot signal is generated according to the pilot signal generation rule of each target interfering cell corresponding to the target signal location. The superposition result of each sub-pilot signal is used as the interference pilot signal for each target interference cell corresponding to the target signal location.

[0015] In one possible implementation, the signal generation module is further used for: Calculate the modulo-3 result of the cell ID of each target interfering cell; The target signal locations of the target interference cells with the same modulo-3 result are the same.

[0016] In one possible implementation, the signal transmitting module is further used for: Determine the number of first transmission ports corresponding to each target interference cell. The number of first transmission ports is the number of ports in the target interference cell that transmit the target pilot signal. For each target interference cell, the location of the corresponding interference signal is determined by the number of the second transmission ports, where the number of the second transmission ports is greater than or equal to the number of the first transmission ports. At the location of the interference signal corresponding to each target interference cell in the time-frequency resource grid, transmit the corresponding interference pilot signal.

[0017] In one possible implementation, the signal transmitting module is further used for: The number of second transmission ports is determined based on the number of first transmission ports corresponding to each target interference cell.

[0018] The electronic device provided in this application includes a memory and a processor. The memory stores a computer program that can run on the processor. When the processor executes the program, it implements the method described in this application.

[0019] The computer-readable storage medium provided in this application embodiment stores a computer program thereon, which, when executed by a processor, implements the method provided in this application embodiment.

[0020] In this embodiment, the method determines the target signal location of the target pilot signal of at least one target interfering cell within a time-frequency resource grid. A corresponding interfering pilot signal is generated based on the target signal location of each target interfering cell and the pilot signal generation rules. For each target interfering cell, a corresponding interfering pilot signal is transmitted at the interfering signal location in the time-frequency resource grid, where the interfering signal location includes the target signal location. This embodiment precisely constructs and transmits the same pilot signal as the interfering cell, creating strong non-white noise interference on the terminal-side channel estimation information, thereby achieving precise shielding of the wireless signal from the target interfering cell. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 A flowchart illustrating a method for interfering with an LTE system according to an embodiment of this application is shown; Figure 2 A schematic diagram illustrating the principle of an LTE interference system according to an embodiment of this application is shown; Figure 3 A schematic diagram of a time-frequency resource grid according to an embodiment of this application is shown; Figure 4 A schematic diagram of an apparatus for interfering with an LTE system according to an embodiment of this application is shown; Figure 5 A schematic diagram of an electronic device according to an embodiment of this application is shown. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the specific technical solutions of this application will be further described in detail below with reference to the accompanying drawings of the embodiments of this application. The following embodiments are used to illustrate this application, but are not intended to limit the scope of this application.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing embodiments of this application only and is not intended to limit this application.

[0025] In the following description, references are made to “some embodiments,” which describe a subset of all possible embodiments. However, it is understood that “some embodiments” may be the same subset or different subsets of all possible embodiments and may be combined with each other without conflict.

[0026] It should be noted that the terms "first, second, third" used in the embodiments of this application are used to distinguish similar or different objects and do not represent a specific order of objects. It can be understood that "first, second, third" can be interchanged in a specific order or sequence where permitted, so that the embodiments of this application described herein can be implemented in an order other than that illustrated or described herein.

[0027] The method for interfering with an LTE system according to embodiments of this application can be executed by any electronic device, including but not limited to mobile phones, wearable devices (such as smartwatches, smart bracelets, smart glasses, etc.), tablet computers, laptops, in-vehicle terminals, PCs (Personal Computers), and IoT terminals (such as smart meters, smart gas meters, etc.). The functions implemented by this method can be achieved by a processor in the electronic device calling program code. Of course, the program code can be stored in a computer storage medium. Therefore, the electronic device includes at least a processor and a storage medium.

[0028] The method for interfering with an LTE system according to embodiments of this application can be used in any application scenario requiring signal jamming. For example, embodiments of this application can be applied to application scenarios where signal jamming is used in important government meeting venues or confidential locations to prevent data leakage. Alternatively, it can also be applied to application scenarios where signal jamming is used in some national education examination venues to prevent cheating by examinees.

[0029] The existing technology has the problem of failing to effectively block wireless communication for terminals that are far from the jammer but close to the target cell. Furthermore, to enhance the jamming effect, manufacturers often significantly increase the transmission power of the jamming signal. This crude method frequently overwhelms wireless signals in surrounding unshielded areas, exacerbating the jammer's interference with nearby wireless base stations, easily leading to customer complaints, and posing certain health risks to people in shielded environments, especially the elderly and young children.

[0030] Therefore, the technical problem solved by the embodiments of this application is how to implement precise and effective interference on the target signal with reasonable power.

[0031] The interference LTE system scheme of this application embodiment will be described in detail below with reference to the accompanying drawings.

[0032] Figure 1 A flowchart illustrating a method for interfering with an LTE system according to an embodiment of this application is shown.Figure 1 As shown, the method for interfering with an LTE system according to an embodiment of this application may include the following steps S10-S20.

[0033] For ease of description, the method for interfering with an LTE system according to embodiments of this application is described using an electronic device as the execution subject. It should be understood that the execution subject in embodiments of this application can also be a processor or chip in an electronic device, and this application does not impose any limitations.

[0034] Step S10: Determine the target signal location of the target pilot signal of at least one target interfering cell in the time-frequency resource grid.

[0035] In one possible implementation, the electronic device is an interference device that interferes with the signals transmitted by a target interference cell by transmitting jamming signals. Specifically, the electronic device can first identify at least one target interference cell to be jammed, and then determine the location of the target pilot signal of each target interference cell in the time-frequency resource network. The target pilot signal of the target interference cell is the Common Reference Signal (CRS) transmitted by that cell. The target interference cell can transmit the target pilot signal through a preset number of transmit ports, which can be 1, 2, or 4.

[0036] Optionally, when the number of target interfering cells is greater than one, the number of transmission ports for the target pilot signal corresponding to different target interfering cells can be the same or different. Meanwhile, the electronic device can determine the target signal location in the time-frequency resource grid by calculating the modulo-6 result of the cell ID of the target interfering cell and the number of transmission ports.

[0037] For example, in the conventional CP (Cyclic Prefix) mode, the time position of the single-port target pilot signal in the time-frequency resource grid is on the 0th and 4th OFDM symbols of each time slot. The frequency position is on the 0th and 4th symbols, and the CRS appears once every 6 subcarriers. The specific frequency offset is determined by V_shift = PCI mod 6, where PCI is the cell ID of the target cell. For example, if PCI mod 6 = 0, the CRS appears on subcarriers 0, 6, 12, etc. If PCI mod 6 = 1, the CRS appears on subcarriers 1, 7, 13, etc., and so on. The time position of the dual-port target pilot signal in the time-frequency resource network is to place the CRS of port 0 and port 1 on the exact same time-frequency resource element, i.e., the 0th and 4th OFDM symbols of each time slot, and the frequency position is determined in the same way as the single-port. The time positions of the target pilot signal in the time-frequency resource network for the four-port signal are determined by ports 0 and 1 being located in the 0th and 4th OFDM symbols of each time slot, and ports 2 and 3 being located in the 1st OFDM symbol of each time slot. Ports 2 and 3, located in the 1st symbol, also share the exact same time-frequency position, distinguished by different orthogonal sequences. The determination of the frequency position for the four-port signal is similar to that for the single-port signal.

[0038] In some embodiments, the electronic device can also calculate the modulo-3 result of the target interfering cell, with the CRS of cells with different modulo-3 results interleaved on the frequency axis. For example, the CRS of PCI mod 3 = 0 is located on subcarriers 0, 3, 6, 9..., the CRS of PCI mod 3 = 1 is located on subcarriers 1, 4, 7, 10..., and the CRS of PCI mod 3 = 2 is located on subcarriers 2, 5, 8, 11.... Step S20: Generate corresponding interfering pilot signals according to the target signal position of each target interfering cell and the pilot signal generation rules.

[0039] In one possible implementation, after determining the target signal location of the target pilot signal transmitted by each target interfering cell in the time-frequency resource grid, the electronic device can generate a corresponding interfering pilot signal based on the target signal location of each target interfering cell and the pilot signal generation rules. The interfering pilot signal corresponding to each target interfering cell is used to interfere with the signal transmitted by that target interfering cell, thereby achieving signal shielding of the target interfering cell.

[0040] Optionally, in this embodiment, the electronic device can generate an interference pilot signal for at least one target interference cell corresponding to the target signal location in the time-frequency resource grid, based on the number of target interference cells corresponding to the target signal location used to place the pilot signal, and the pilot signal generation rules of the corresponding target interference cells. For example, the electronic device can first determine whether the target signal locations corresponding to each target interference cell are the same, and then generate an interference pilot signal corresponding to each target interference cell based on the determination result.

[0041] Furthermore, in this embodiment, the electronic device can determine whether the target signal positions corresponding to the target interfering cells are the same by calculating the modulo-3 result of the target interfering cell ID. That is, the electronic device can calculate the modulo-3 result of the cell ID of each target interfering cell and determine that the target signal positions corresponding to the target interfering cells with the same modulo-3 result are the same. Optionally, when there are too many target interfering cells that need to be interfered with, the electronic device can also group the multiple target interfering cells, and the target pilot signal corresponding to each group of target interfering cells is set in the same subframe time-frequency resource grid.

[0042] For example, the electronic device can determine the total number of all target interference cells searched. The number of target interference cells within the same subframe This number is a configurable parameter and Typically, it is set to 1, 2, or 3. It is preferred to transmit target pilots for 1-3 cells that simultaneously meet the following conditions within the same subframe: 1-3 cells with different cell ID modulo 3 results. In other words, it is preferred to simultaneously interfere with multiple cells with different CRS RE locations.

[0043] In some embodiments, when the target signal location corresponds to only one target interfering cell, the electronic device generates an interfering pilot signal for the target interfering cell according to the pilot signal generation rules for the target interfering cell corresponding to the target signal location. The interfering pilot signal is identical to the target pilot signal of the target interfering cell. That is, the interfering pilot signal reconstructed by the electronic device is identical to the target pilot signal of the target interfering cell, using the same cell bandwidth, cell ID, CP type, subframe number, OFDM symbol index, and other parameters, and conforming to the LTE 36.211 protocol. For example, in the case where the target pilot signal of the target interfering cell is... In this case, the interference pilot signal reconstructed by the electronic device is also .

[0044] In other embodiments, when the number of target interfering cells corresponding to the target signal location is greater than one, the electronic device can generate corresponding sub-pilot signals according to the pilot signal generation rules of each target interfering cell corresponding to the target signal location. The sub-pilot signals reconstructed by the electronic device are the same as the target pilot signals of each target interfering cell, that is, they use the same parameters such as cell bandwidth, cell ID, CP type, subframe number, and OFDM symbol index, and comply with the LTE 36.211 protocol. The superposition result of each sub-pilot signal is used as the interference pilot signal of each target interfering cell corresponding to the target signal location. Optionally, this superposition method can be a simple accumulation. For example, in the case where the target signal location corresponds to target interfering cell 1 and target interfering cell 2, the target pilot signal of target interfering cell 1 is... The target pilot signal of target interference cell 2 is In this case, the interference pilot signal reconstructed by the electronic device is .

[0045] Step S30: For each target interfering cell, transmit the corresponding interfering pilot signal at the interfering signal location in the time-frequency resource grid.

[0046] In one possible implementation, after determining the interference pilot signal corresponding to each target interfering cell, the electronic device can transmit the interference pilot signal corresponding to each target interfering cell at the interference signal location in the time-frequency resource grid. The location of the interference signal includes the target signal location; that is, the interference signal location can completely cover the target signal location. The interference signal location can be the same as or larger than the target signal location.

[0047] Optionally, to ensure that the location of the interfering signal covers the location of the target signal, the electronic equipment can control the number of transmitting ports to be greater than or equal to the number of transmitting ports of the target interfering cell. For example, the electronic equipment determines the number of CRS ports for transmitting each interfering pilot signal. The number of CRS ports must be no less than the number of CRS ports of the corresponding target interfering cell. This ensures that interference is generated on the channel information corresponding to each antenna port of the target interfering cell.

[0048] In some embodiments, the electronic device may specifically determine the number of CRS ports that transmit each interference pilot signal. To ensure The number of CRS ports equal to the number of target interfering cells ensures that the location of the interfering signal accurately covers the location of the target signal in the target interfering cell. Specifically, the electronic equipment first determines the number of first transmit ports corresponding to each target interfering cell; this number represents the number of ports in the target interfering cell that transmit the target pilot signal. Then, based on the number of first transmit ports for each target interfering cell, the corresponding number of second transmit ports is determined. For each target interfering cell, the location of the corresponding interfering signal is determined by the number of second transmit ports. If the number of second transmit ports is greater than or equal to the number of first transmit ports, the corresponding interfering pilot signal is transmitted at the location of the interfering signal in the time-frequency resource grid for each target interfering cell. For example, if the number of first transmit ports in the target interfering cell is 1, the number of second transmit ports is determined to be 2. Similarly, if the number of first transmit ports in the target interfering cell is 2, the number of second transmit ports is determined to be 2.

[0049] In other embodiments, the electronic device may also determine a fixed number of second transmit ports to ensure that reconstruction and transmission are performed according to a fixed value regardless of whether the number of CRS ports of the target interfering cell is 1, 2, or 4. For example, the number of CRS ports for transmitting each interfering pilot signal may be determined. This ensures that the location of the target signal is always covered by the location of the interference signal. Specifically, the electronic equipment can determine the location of the corresponding interference signal for each target interference cell using a preset number of second transmission ports, and then transmit the corresponding interference pilot signal at each interference signal location in the time-frequency resource grid. For example, regardless of whether the number of first transmission ports for the target interference cell is 1, 2, or 4, the number of second transmission ports is always determined to be 4.

[0050] Furthermore, for locations other than the location of the interfering signal in the time-frequency resource grid, the electronic device can generate and transmit random signals or zero-power signals. Optionally, in order to ensure the signal interference effect on the target interfering cell, the electronic device can transmit the corresponding reconstructed interfering pilot signal and random signal at a transmission power greater than that of the target interfering cell; alternatively, it can also transmit zero-power signals and use the saved power to transmit a larger reconstructed interfering pilot signal at the location of the target interfering signal.

[0051] Figure 2 This diagram illustrates the principle of an LTE interference system according to an embodiment of this application. Figure 2 As shown, on the pilot subcarrier, assume that the electronic device transmits an interference signal targeting a specific interfering cell at the location of the interference signal. Then, the received signal of the UE (user terminal) on the CRS RE (the smallest resource unit carrying downlink signals in the LTE downlink time-frequency resource grid) becomes... .in, This indicates the channel information between the target interfering cell and the UE. This indicates the channel information between the jammer and the UE. This indicates that the target pilot signal and the interference pilot signal transmitted by the target interfering cell and electronic equipment on the pilot subcarrier are the same signal. Indicates noise. This represents the power adjustment factor, used to adjust the interference level on the CRS RE.

[0052] After receiving the signal, the UE can perform channel estimation based on the received signal on the pilot subcarrier and the known pilot signal information. Without loss of generality, we assume here that the power of the pilot signal is equal to 1. Since the frequency domain signal transmitted by the electronic device on the pilot subcarrier is exactly the same as the frequency domain signal transmitted by the target interfering cell, i.e., completely coherent, the ideal channel estimation information obtained by the UE when the noise term is ignored is the channel information between the target cell and the UE. Channel information between the jammer and the UE The sum of, that is This causes severe distortion of the UE's channel estimation information, leading to communication failure. This interference, imposed on the UE by the electronic equipment, constitutes precise interference with the UE's channel estimation. The power factor is introduced. Further adaptive adjustment of interference intensity. Typically... A value greater than 1 is used to exert greater interference on CRS RE.

[0053] Furthermore, on the data subcarrier, since the electronic equipment cannot know the cell's transmitted signal in advance, it can only transmit random signals or zero-power signals to interfere with the signal. In this case, the UE's received signal can be expressed as... .in, , These represent the frequency domain signals transmitted by the target interfering cell and electronic equipment on the data subcarrier, respectively.

[0054] After receiving the data, the UE performs demodulation on the data subcarrier: After ignoring the effects of noise, the channel estimation information obtained by the UE is as follows: This channel estimation cannot accurately distinguish the true channel information. and interference channel information When the real channel The power is The power of the interfering channel At times, it is almost impossible to demodulate a real signal correctly. When the real channel... When the power of the signal is less than the power of the interference channel, the demodulated signal is closer to the interference signal emitted by the electronic device. In other words, the real signal cannot be demodulated. When the real channel... When the power of the jammer exceeds the power of the interfering channel, the interfering channel information causes precise interference to the UE's channel estimation, greatly reducing the probability of the UE's correct demodulation. In the actual operating environment of the jammer, the strength of the transmitted interfering signal is usually much greater than the signal strength of the target interfering cell received by the UE, thereby further reducing the probability of this scenario occurring.

[0055] Based on the above technical features, embodiments of this application can transmit the same pilot signal as the interfering cell on pilot time-frequency resources via an electronic device, causing the UE to obtain false pilot estimation information and resulting in UE demodulation failure. Furthermore, by increasing the transmission power of the pilot signal, the jammer can further enhance its interference and shielding effects.

[0056] Figure 3 A schematic diagram of a time-frequency resource grid according to an embodiment of this application is shown. Figure 3 As shown, this example illustrates a scenario where an electronic device needs to simultaneously interfere with and shield three target interfering cells within a single subframe. The three target interfering cells have different numbers of first transmit ports: 1, 2, and 4, respectively, and their cell IDs modulo 3 results are 0, 1, and 2, respectively. In the figure, the horizontal axis (0-13) represents OFDM symbols 0-13, and the vertical axis (0-11) represents the 12 subcarriers of one RB. R0, R1, R2, and R3 correspond to the pilot positions of CRS ports 0, 1, 2, and 3, respectively. The CRS pilots of the three target interfering cells are distinguished using three different colors. This assumes a standard CP mode; for extended CP mode, a simple extension is sufficient.

[0057] exist Figure 3 In the diagram, (a), (b), and (c) show the target signal locations of three target interfering cells within one RB. (d) shows the location of the interfering pilot signal emitted by an electronic device within one RB. At all CRS RE positions of the three interfering cells above, the electronic device simultaneously emits the same target interfering signal as the corresponding target interfering cell, and emits a random interfering signal at the RE positions (white spaces) after deducting the CRS of all target interfering cells.

[0058] Optionally, for each target interfering cell, the number of transmit ports of the reconstructed interfering pilot signal by the electronic device is not less than the number of CRS pilot ports of that target interfering cell. For example, the first target interfering cell has 1 CRS port. The number of CRS ports transmitted by the electronic device is set to 2. The electronic device uses the cell ID of the target interfering cell and transmits the pilot signal according to a 2-port CRS. The number of CRS ports of the electronic device can also be 1, 2, or 4. The second target interfering cell has 2 CRS ports. The number of CRS ports transmitted by the electronic device is set to 4. The electronic device uses the cell ID of the target interfering cell and transmits the pilot signal according to a 4-port CRS. The number of CRS ports of the electronic device can also be 2 or 4. The third target interfering cell has 4 CRS ports. The number of CRS ports transmitted by the electronic device is still set to 4. The electronic device uses the cell ID of the target interfering cell and transmits the pilot signal according to a 4-port CRS.

[0059] For each target interfering cell, electronic devices can use the same cell bandwidth, cell ID, CP type, subframe number, OFDM symbol index, and other parameters, and follow the LTE 36.211 protocol to reconstruct and transmit CRS pilot signals. If multiple pilot signals need to be transmitted simultaneously at the same CRS RE location, the electronic devices will accumulate the multiple CRS pilot signals. At RE locations outside the CRS pilots of all target interfering cells, the electronic devices transmit random signals or zero-power signals. When transmitting zero-power signals or low-power interference signals, the excess power can be added to the CRS RE, further increasing the interference level on the CRS RE.

[0060] Based on the above technical features, the embodiments of this application accurately construct and transmit pilot signals identical to those of the interfering cell, creating strong non-white noise interference on the terminal-side channel estimation information, thereby achieving precise shielding of the wireless signal of the target interfering cell. This signal interference scheme can accurately interfere with the signal of the cell that needs to be interfered with, achieving a strong interference effect without affecting the signal transmission of other cells.

[0061] It should be understood that although the steps in the above flowcharts are shown sequentially according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some steps in the above flowcharts may include multiple sub-steps or multiple stages. These sub-steps or stages are not necessarily completed at the same time, but can be executed at different times. The execution order of these sub-steps or stages is not necessarily sequential, but can be performed alternately or in turn with other steps or at least some of the sub-steps or stages of other steps.

[0062] Based on the foregoing embodiments, this application provides a device for interfering with an LTE system. The device includes various modules and units included in each module, which can be implemented by a processor; of course, it can also be implemented by specific logic circuits. In the implementation process, the processor can be a central processing unit (CPU), a microprocessor (MPU), a digital signal processor (DSP), or a field-programmable gate array (FPGA), etc.

[0063] Figure 4 A schematic diagram of an apparatus for interfering with an LTE system according to an embodiment of this application is shown. Figure 4 As shown, the apparatus for interfering with an LTE system according to an embodiment of this application includes: Location determination module 40 is used to determine the location of the target pilot signal of at least one target interference cell in the time-frequency resource grid; Signal generation module 41 is used to generate corresponding interference pilot signals based on the target signal location of each target interference cell and the pilot signal generation rules; The signal transmission module 42 is used to transmit a corresponding interference pilot signal at the interference signal location in the time-frequency resource grid for each target interference cell. The interference signal location includes the target signal location.

[0064] In one possible implementation, the device further includes: The signal jamming module is used to transmit random signals or zero-power signals at signal locations other than the jamming signal locations in the time-frequency resource grid.

[0065] In one possible implementation, the signal generation module 41 is further configured to: Determine whether the target signal locations corresponding to each interfering cell are the same; When the target signal location corresponds to only one target interfering cell, an interfering pilot signal for the target interfering cell is generated according to the pilot signal generation rules of the target interfering cell corresponding to the target signal location. The interfering pilot signal is the same as the target pilot signal of the target interfering cell.

[0066] In one possible implementation, the signal generation module 41 is further configured to: If the number of target interfering cells corresponding to the target signal location is greater than 1, a corresponding sub-pilot signal is generated according to the pilot signal generation rule of each target interfering cell corresponding to the target signal location. The superposition result of each sub-pilot signal is used as the interference pilot signal for each target interference cell corresponding to the target signal location.

[0067] In one possible implementation, the signal generation module 41 is further configured to: Calculate the modulo-3 result of the cell ID of each target interfering cell; The target signal locations of the target interference cells with the same modulo-3 result are the same.

[0068] In one possible implementation, the signal transmitting module 42 is further configured to: Determine the number of first transmission ports corresponding to each target interference cell. The number of first transmission ports is the number of ports in the target interference cell that transmit the target pilot signal. For each target interference cell, the location of the corresponding interference signal is determined by the number of the second transmission ports, where the number of the second transmission ports is greater than or equal to the number of the first transmission ports. At the location of the interference signal corresponding to each target interference cell in the time-frequency resource grid, transmit the corresponding interference pilot signal.

[0069] In one possible implementation, the signal transmitting module 42 is further configured to: The number of second transmission ports is determined based on the number of first transmission ports corresponding to each target interference cell.

[0070] The descriptions of the above device embodiments are similar to those of the above method embodiments, and have similar beneficial effects. For technical details not disclosed in the device embodiments of this application, please refer to the descriptions of the method embodiments of this application for understanding.

[0071] It should be noted that, in the embodiments of this application... Figure 4 The module division of the device for interfering with the LTE system shown is illustrative and represents only one logical functional division; in actual implementation, other division methods may be used. Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, exist as separate physical units, or be integrated into one unit by two or more units. The integrated units can be implemented in hardware, as software functional units, or a combination of both.

[0072] It should be noted that, in the embodiments of this application, if the above-described methods 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 related technologies, 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 an electronic device 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 USB flash drives, portable hard drives, read-only memory (ROM), magnetic disks, or optical disks. Thus, the embodiments of this application are not limited to any specific hardware and software combination.

[0073] Figure 5 A schematic diagram of an electronic device according to an embodiment of this application is shown. For example... Figure 5 As shown in the figure, this application provides an electronic device, which can be a server, and its internal structure diagram can be as follows. Figure 5 As shown, the electronic device includes a processor 520, a memory, and a transceiver 540 connected via a system bus 510. The processor 520 provides computing and control capabilities. The memory includes a non-volatile storage medium 531 and internal memory 532. The non-volatile storage medium 531 stores an operating system, computer programs, and a database. The internal memory 532 provides an environment for the operation of the operating system and computer programs in the non-volatile storage medium 531. The database stores data. The transceiver 540 communicates with external terminals via a network connection. When the computer program is executed by the processor 520, it implements the methods described above.

[0074] This application provides a computer-readable storage medium storing a computer program thereon, which, when executed by a processor 520, implements the steps of the method provided in the above embodiments.

[0075] This application provides a computer program product containing instructions that, when run on a computer, cause the computer to perform the steps in the method provided in the above-described method embodiments.

[0076] Those skilled in the art will understand that Figure 5 The structure shown is merely a block diagram of a portion of the structure related to the present application and does not constitute a limitation on the electronic device to which the present application is applied. The specific electronic device may include more or fewer components than shown in the figure, or combine certain components, or have different component arrangements.

[0077] In one possible implementation, the shooting prompting device provided in this application can be implemented as a computer program, which can be configured as follows: Figure 5 The device operates on the electronic device shown. The memory of the electronic device can store various program modules that make up the above-described apparatus. The computer program composed of the various program modules causes the processor 520 to execute the steps of the methods in the various embodiments of this application described in this specification.

[0078] It should be noted that the descriptions of the storage medium and device embodiments above are similar to the descriptions of the method embodiments above, and have similar beneficial effects. For technical details not disclosed in the storage medium, storage medium, and device embodiments of this application, please refer to the descriptions of the method embodiments of this application for understanding.

[0079] It should be understood that the phrases "one embodiment," "an embodiment," or "some embodiments" mentioned throughout the specification mean that a specific feature, structure, or characteristic related to an embodiment is included in at least one embodiment of this application. Therefore, phrases such as "in one possible implementation," "in one embodiment," or "in some embodiments" appearing throughout the specification do not necessarily refer to the same embodiment. Furthermore, these specific features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. It should be understood that in the various embodiments of this application, the sequence numbers of the above-described processes do not imply a sequential order of execution; the execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application. The sequence numbers of the above-described embodiments are merely for descriptive purposes and do not represent the superiority or inferiority of the embodiments. The descriptions of the various embodiments above tend to emphasize the differences between the various embodiments; their similarities or commonalities can be referred to mutually, and for the sake of brevity, they will not be repeated here.

[0080] In this article, the term "and / or" is merely a description of the relationship between related objects, indicating that there can be three kinds of relationships. For example, object A and / or object B can represent three situations: object A exists alone, object A and object B exist simultaneously, and object B exists alone.

[0081] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0082] In the several embodiments provided in this application, it should be understood that the disclosed devices and methods can be implemented in other ways. The embodiments described above are merely illustrative. For example, the division of modules is only a logical functional division, and in actual implementation, there may be other division methods, such as: multiple modules or components can be combined, or integrated into another system, or some features can be ignored or not executed. In addition, the coupling, direct coupling, or communication connection between the various components shown or discussed can be through some interfaces, and the indirect coupling or communication connection between devices or modules can be electrical, mechanical, or other forms.

[0083] The modules described above as separate components may or may not be physically separate. The components shown as modules may or may not be physical modules. They may be located in one place or distributed across multiple network units. Some or all of the modules may be selected to achieve the purpose of this embodiment according to actual needs.

[0084] In addition, each functional module in the various embodiments of this application can be integrated into one processing unit, or each module can be a separate unit, or two or more modules can be integrated into one unit; the integrated modules can be implemented in hardware or in the form of hardware plus software functional units.

[0085] 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 that can store program code, such as mobile storage devices, read-only memory (ROM), magnetic disks, or optical disks.

[0086] Alternatively, if the integrated units described above 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 related technologies, 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 an electronic device 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, ROMs, magnetic disks, or optical disks.

[0087] The methods disclosed in the several method embodiments provided in this application can be arbitrarily combined without conflict to obtain new method embodiments.

[0088] The features disclosed in the several product embodiments provided in this application can be arbitrarily combined without conflict to obtain new product embodiments.

[0089] The features disclosed in the several method or device embodiments provided in this application can be arbitrarily combined without conflict to obtain new method or device embodiments.

[0090] The above description is merely an 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 method for interfering with an LTE system, characterized in that, The method includes: Determine the location of the target pilot signal of at least one target interfering cell in the time-frequency resource grid; Generate corresponding interference pilot signals based on the target signal location of each target interference cell and the pilot signal generation rules; For each target interference cell, a corresponding interference pilot signal is transmitted at the interference signal location in the time-frequency resource grid, where the interference signal location includes the target signal location.

2. The method according to claim 1, characterized in that, The method further includes: Transmit random signals or zero-power signals at signal locations other than the interference signal locations in the time-frequency resource grid.

3. The method according to claim 1, characterized in that, The step of generating corresponding interference pilot signals based on the target signal location and pilot signal generation rules of each target interference cell includes: Determine whether the target signal locations corresponding to each of the aforementioned target interference cells are the same; When the target signal location corresponds to only one target interfering cell, an interfering pilot signal for the target interfering cell is generated according to the pilot signal generation rule for the target interfering cell corresponding to the target signal location. The interfering pilot signal is the same as the target pilot signal for the target interfering cell.

4. The method according to claim 3, characterized in that, The step of generating corresponding interference pilot signals based on the target signal location and pilot signal generation rules of each target interference cell includes: If the number of target interfering cells corresponding to the target signal location is greater than 1, a corresponding sub-pilot signal is generated according to the pilot signal generation rule of each target interfering cell corresponding to the target signal location. The superposition result of each of the sub-pilot signals is used as the interference pilot signal for each target interference cell corresponding to the target signal location.

5. The method according to claim 3, characterized in that, The step of determining whether the target signal locations corresponding to each of the target interference cells are the same includes: Calculate the modulo-3 result of the cell ID of each of the target interfering cells; The target signal locations of the target interference cells with the same modulo-3 result are the same.

6. The method according to claim 1, characterized in that, For each target interfering cell, transmitting a corresponding interfering pilot signal at the interfering signal location in the time-frequency resource grid includes: Determine the number of first transmission ports corresponding to each target interference cell, wherein the number of first transmission ports is the number of ports in the target interference cell that transmit target pilot signals; For each target interference cell, the location of the corresponding interference signal is determined by the number of second transmission ports, wherein the number of second transmission ports is greater than or equal to the number of first transmission ports; At the location of the interference signal corresponding to each target interference cell in the time-frequency resource grid, a corresponding interference pilot signal is transmitted.

7. The method according to claim 6, characterized in that, The step of transmitting a corresponding interference pilot signal at the interference signal location in the time-frequency resource grid for each target interference cell further includes: The number of second transmission ports is determined based on the number of first transmission ports corresponding to each target interference cell.

8. An apparatus for interfering with an LTE system, characterized in that, The device includes: The location determination module is used to determine the location of the target pilot signal of at least one target interfering cell in the time-frequency resource grid; The signal generation module is used to generate corresponding interference pilot signals based on the target signal location of each target interference cell and the pilot signal generation rules; The signal transmission module is used to transmit a corresponding interference pilot signal at the interference signal location in the time-frequency resource grid for each target interference cell, wherein the interference signal location includes the target signal location.

9. An electronic device comprising a memory and a processor, the memory storing a computer program executable on the processor, characterized in that, When the processor executes the program, it implements the steps of the method according to any one of claims 1 to 7.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by a processor, it implements the method as described in any one of claims 1 to 7.

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