Wireless communication method and device, electronic equipment, storage medium and program product

Abstract

The invention relates to the technical field of signal processing, in particular to a wireless communication method and device, electronic equipment, a storage medium and a program product, which are applied to a transmitting part and a receiving part, and the method comprises the following steps: determining the position of the transmitting part and the type, direction, beam width and transmitting frequency of a target transmitting signal based on the wireless communication state of a target area; the target transmit signal is transmitted to a receiver within the target area according to the type, direction, beamwidth, and transmit frequency of the target transmit signal to define an actual area of wireless communication within the target area in conjunction with the target transmit signal. According to the invention, by transmitting the radio beam, the linear combination of the original signal frequency is formed by using the non-linear characteristic of the receiver in the beam irradiation area, that is, the signal for communication or interference is generated by using the receiver by controlling the frequency, power and direction of the transmitted signal by using an intermodulation phenomenon or an intermodulation phenomenon; a range of secure communication and a range of effective interference are defined within a target area.

Description

Technical Field

[0001] The present application relates to the field of signal processing technology, and in particular to a wireless communication method, device, electronic device, storage medium and program product. Background Art

[0002] Wireless communication technology includes electronic jamming and secure communication. The core of secure communication is to ensure the confidentiality of information transmission. It can achieve secure communication through channel coding, beamforming and other technologies, so that the eavesdropper cannot obtain effective information. Electronic jamming is to create electromagnetic interference signals so that they enter the receiver of the other party's electronic equipment at the same time as the useful signal. When the interference signal is strong enough, the other party's receiver cannot extract useful information from the received signal, thereby interfering with the other party's electronic equipment.

[0003] In related technologies, antennas used for electronic jamming and secure communications are developing from omnidirectional to directional, such as directional antennas and beamforming technology, in order to achieve the purpose of concentrating power and reducing leakage.

[0004] However, due to the limitations of actual design and construction, the directional antenna and beamforming technology in the related technology can only concentrate the main power of the transmitted signal in the direction of the main beam. There will be energy leakage in the sidelobe direction, which makes it impossible for the antenna to completely avoid radiation in the non-main beam direction. In addition, the illumination area in the main beam direction is also large. The signal can be received in the angular area centered on the transmitting antenna. The accuracy of the area limitation is low and needs to be solved urgently. Summary of the invention

[0005] The present application provides a wireless communication method, device, electronic device, storage medium and program product to solve the problems in the related art that, due to the limitations of actual design and construction, the directional antenna and beamforming technology can only concentrate the main power of the transmitted signal in the main beam direction, and there will be energy leakage in the side lobe direction, so that the antenna cannot completely avoid radiation in the non-main beam direction, and the illumination area in the main beam direction is also large. The signal can be received in the angle area centered on the transmitting antenna, and the accuracy of the area limitation is low.

[0006] The first aspect of the present application provides a wireless communication method, which is applied to a transmitting element and includes the following steps: based on the wireless communication status of a target area, determining the position of the transmitting element and the type, direction, beam width and transmission frequency of a target transmission signal; transmitting the target transmission signal to a receiver in the target area according to the type, direction, beam width and transmission frequency of the target transmission signal, so as to limit the actual area of ​​the wireless communication within the target area in combination with the target transmission signal.

[0007] Optionally, in one embodiment of the present application, determining the position of the transmitter and the type, direction, beam width and transmission frequency of the target transmission signal includes: converting the position of the transmitter and the center position of the target area into a first coordinate position and a second coordinate position in a coordinate system; calculating the distance between the position of the transmitter and the center of the target area based on the first coordinate position and the second coordinate position; and calculating the beam width based on the distance.

[0008] A second aspect of the present application provides a wireless communication method, which is applied to a receiving device and includes the following steps: receiving a target transmission signal sent by a transmitting device, wherein the target transmission signal is generated by the transmitting device based on type, direction, beam width and transmission frequency; based on the target transmission signal and the wireless communication status, generating a communication signal of a target type to perform wireless communication in combination with the target transmission signal.

[0009] Optionally, in one embodiment of the present application, based on the target transmission signal and the wireless communication state, a target type communication signal is generated to perform wireless communication in combination with the target transmission signal, including: when the wireless communication state is a communication security state, an intermodulation signal is generated to use the target transmission signal and the intermodulation signal to perform anti-eavesdropping processing in wireless communication; or, when the wireless communication state is an electronic interference state, an interference signal is generated to use the target transmission signal and the interference signal to perform interference processing in wireless communication within a target area.

[0010] Optionally, in one embodiment of the present application, after performing wireless communication in combination with the target transmission signal, it also includes: obtaining an effect of the wireless communication; generating an adjustment instruction for the target transmission signal according to the effect, and sending the adjustment instruction to the transmitting element.

[0011] The third aspect of the present application provides a wireless communication device, which is applied to a transmitter, including: a determination module, which is used to determine the position of the transmitter and the type, direction, beam width and transmission frequency of the target transmission signal based on the wireless communication status of the target area; a limitation module, which is used to transmit the target transmission signal to a receiver in the target area according to the type, direction, beam width and transmission frequency of the target transmission signal, so as to limit the actual area of ​​the wireless communication within the target area in combination with the target transmission signal.

[0012] Optionally, in one embodiment of the present application, the determination module includes: a conversion unit, used to convert the position of the transmitter and the center position of the target area into a first coordinate position and a second coordinate position in a coordinate system; a first calculation unit, used to calculate the distance between the position of the transmitter and the center of the target area based on the first coordinate position and the second coordinate position; and a second calculation unit, used to calculate the beam width based on the distance.

[0013] The fourth aspect of the present application provides a wireless communication device, which is applied to a receiving device, including: a receiving module, which is used to receive a target transmission signal sent by a transmitting device, wherein the target transmission signal is generated by the transmitting device based on the type, direction, beam width and transmission frequency; a communication module, which is used to generate a communication signal of a target type based on the target transmission signal and the wireless communication status, so as to perform wireless communication in combination with the target transmission signal.

[0014] Optionally, in one embodiment of the present application, the communication module includes: a first processing unit, used to generate an intermodulation signal when the wireless communication state is a communication security state, so as to use the target transmission signal and the intermodulation signal to perform anti-eavesdropping processing in wireless communication; a second processing unit, used to generate an interference signal when the wireless communication state is an electronic interference state, so as to use the target transmission signal and the interference signal to perform interference processing in wireless communication within a target area.

[0015] Optionally, in one embodiment of the present application, it also includes: an acquisition module, which is used to obtain the effect of the wireless communication after wireless communication is performed in combination with the target transmission signal; an adjustment module, which is used to generate an adjustment instruction of the target transmission signal according to the effect, and send the adjustment instruction to the transmitting element.

[0016] The fifth aspect of the present application provides an electronic device, comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the wireless communication method as described in the above embodiment.

[0017] The sixth aspect embodiment of the present application provides a computer-readable storage medium, which stores a computer program, and when the program is executed by a processor, it implements the above wireless communication method.

[0018] The seventh aspect embodiment of the present application provides a computer program product, including a computer program, which, when executed, is used to implement the above wireless communication method.

[0019] The embodiment of the present application can be based on the wireless communication state of the target area, and the target transmission signal with the type, direction, beam width and transmission frequency can be determined by the transmitter at the determined position, and the target transmission signal can be received by the receiver to generate a communication signal of the target type, so as to limit the actual area of ​​wireless communication within the target area in combination with the target transmission signal. In this way, one or more radio beams are transmitted by the transmitter, and the nonlinear characteristics of the receiver are used to form a linear combination of the original signal frequencies in the beam irradiation area, that is, the intermodulation phenomenon or cross-modulation phenomenon is used to control the frequency, power and direction of the transmission signal to generate a signal for communication or interference in the receiver in the target area. In the case where the direction of the target transmission signal can be specified, the space can also be divided into small blocks, and the range of safe communication and the range of effective interference can be limited to a small space, which effectively improves the accuracy of area limitation. This solves the problem that directional antennas and beamforming technologies in related technologies can only concentrate the main power of the transmitted signal in the direction of the main beam due to actual design and construction limitations, and there will be energy leakage in the side lobe direction, making it impossible for the antenna to completely avoid radiation in the non-main beam direction, and the illumination area in the main beam direction is also large. The signal can be received in the angular area centered on the transmitting antenna, and the accuracy of the area limitation is low.

[0020] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0022] Figure 1 A flowchart of a wireless communication method provided according to an embodiment of the present application;

[0023] Figure 2 A schematic diagram of the correct position and correct direction of a single-tone transmitter according to an embodiment of the present application;

[0024] Figure 3 A schematic diagram of an incorrect position and incorrect direction of a single-tone transmitter according to an embodiment of the present application;

[0025] Figure 4 A flowchart of a wireless communication method applied to a receiving device according to an embodiment of the present application;

[0026] Figure 5 A flowchart of defining a secure communication target area according to an embodiment of the present application;

[0027] Figure 6A flowchart of limiting an effective interference target area according to an embodiment of the present application;

[0028] Figure 7 This is a schematic diagram of limiting the effective jamming target area by simply using a jammer according to an embodiment of the present application;

[0029] Figure 8 A schematic diagram of third-order intermodulation of two single-tone interference signals according to an embodiment of the present application;

[0030] Fig. 9 A schematic diagram of third-order intermodulation of a single-tone interference signal and a modulated interference signal according to an embodiment of the present application;

[0031] Fig.10 This is a schematic diagram of jointly utilizing the original signal in the air and the interference signal to define the effective interference target area according to one embodiment of the present application;

[0032] Fig.11 A schematic diagram of the structure of a wireless communication device applied to a transmitting element according to an embodiment of the present application;

[0033] Fig.12 A schematic diagram of the structure of a wireless communication device applied to a receiving element according to an embodiment of the present application;

[0034] Fig.13 It is a schematic diagram of the structure of an electronic device provided according to an embodiment of the present application.

[0035] Reference numerals:

[0036] 10- Wireless communication device applied to a transmitting part: 100- Determination module, 200- Limitation module; 11- Wireless communication device applied to a receiving part: 300- Receiving module, 400- Communication module; 1301- Memory, 1302- Processor and 1303- Communication interface. DETAILED DESCRIPTION

[0037] Embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0038] The wireless communication method, device, electronic device, storage medium and program product of the embodiment of the present application are described below with reference to the accompanying drawings. In view of the directional antenna and beamforming technology in the related technology mentioned in the above background technology, due to the limitations of actual design and construction, the main power of the transmitted signal can only be concentrated in the main beam direction, and there will be energy leakage in the side lobe direction, so that the antenna cannot completely avoid radiation in the non-main beam direction, and the irradiation area in the main beam direction is also large. The signal can be received in the angle area centered on the transmitting antenna, and the accuracy of the area limitation is low. The present application provides a wireless communication method, in which a target transmission signal with a determined type, direction, beam width and transmission frequency can be transmitted by a transmitter with a determined position based on the wireless communication state of the target area, and a receiver is used to receive the target transmission signal to generate a communication signal of the target type, so as to limit the actual area of ​​wireless communication within the target area in combination with the target transmission signal. Thus, one or more radio beams are transmitted through the transmitting element, and the nonlinear characteristics of the receiver are used to form a linear combination of the original signal frequency in the beam irradiation area, that is, the intermodulation phenomenon or cross-modulation phenomenon is used to control the frequency, power and direction of the transmitted signal to generate a signal for communication or interference in the receiver in the target area. When the direction of the target transmitted signal can be specified, the space can be divided into small blocks, and the range of safe communication and the range of effective interference can be limited to a small space, which effectively improves the accuracy of the area limitation. Thus, the directional antenna and beamforming technology in the related art can only concentrate the main power of the transmitted signal in the main beam direction due to the limitations of actual design and construction, and there will be energy leakage in the side lobe direction, so that the antenna cannot completely avoid radiation in the non-main beam direction, and the main beam direction irradiation area is also large, and the signal can be received in the angle area centered on the transmitting antenna, and the accuracy of the area limitation is low.

[0039] Before explaining the wireless communication method in the embodiment of the present application, the cross-modulation phenomenon and intermodulation phenomenon involved in the embodiment of the present application are first explained.

[0040] Among them, intermodulation refers to the generation of new frequency components when two or more signals of different frequencies pass through a nonlinear circuit. These new frequency components are linear combinations of integer multiples of the original frequencies plus or minus the original frequencies. Intermodulation mainly occurs in nonlinear devices, electrical networks or propagation media, and the interaction of signals causes the modulation of useful signals by useless signals. The frequency of the intermodulation product usually falls within the frequency band of the original signal, which will interfere with the reception and demodulation of the original signal. Intermodulation can be regarded as a phenomenon of modulated signals and may cause crosstalk problems.

[0041] Intermodulation refers to the situation where the amplitude change of one signal (usually a strong signal) affects the amplitude of another signal (usually a weak signal) when two or more signals pass through a nonlinear circuit, causing the amplitude of the weak signal to be modulated. Intermodulation mainly occurs in nonlinear devices or propagation media, where the spectrum components of one or more input signals interact with each other to produce new components. The frequencies of these new components are equal to the linear combination of integer multiples of the frequencies of the input signal components. Intermodulation can cause the reception quality of weak signals to deteriorate, especially in the presence of strong interfering signals.

[0042] In the related art, linearity is improved mainly by optimizing circuit design and reducing the influence of intermodulation on demodulation. The embodiment of the present application utilizes the products of intermodulation phenomenon as communication signals and interference signals to achieve regional limitation.

[0043] Assuming that the input signal of the receiver circuit with nonlinear characteristics is x and the output signal is y, the relationship between the output and the input can be expressed by a power series formula, but is not limited to:

[0044]

[0045] When the input signal amplitude is relatively small, the second and above power series terms can be ignored, and the circuit is approximately a linear circuit. The usual radio receiver works normally in the linear region, and the input and output at this time satisfy the following formula:

[0046] y≈k 1 x,

[0047] When a strong signal is input, more power series terms need to be considered. Generally, the higher the power series, the higher the k i The smaller the modulus value, the fourth and higher power series terms can be ignored for the convenience of analysis. Usually only the third power series terms are taken. The formula can be, but is not limited to, expressed as:

[0048] y≈k 1 x+k 2 x 2 +k 3 x 3 ,

[0049] When two single-tone signals with different frequencies are input, that is, x = Acos(2πf 1 t)+Acos(2πf 2 t), the output can be expressed as but not limited to:

[0050]

[0051] At this time, the output signal not only contains the frequency f 1 and f 2 The components also include f 1and f 2 The new frequency component of the combination |mf 1 ±nf 2 |, (m,n=0,±1,±2,…), is called intermodulation or cross-modulation product, |m|+|n| is the order. The output amplitude of second-order intermodulation is positively correlated with the square of the input amplitude, and the output amplitude of third-order intermodulation is positively correlated with the cube of the input amplitude. When the input amplitude A is small, the intermodulation component is not large, but as A increases, the intermodulation component will increase rapidly.

[0052] Specifically, Figure 1 A flowchart of a wireless communication method applied to a transmitter provided in an embodiment of the present application.

[0053] like Figure 1 As shown, the wireless communication method includes the following steps:

[0054] In step S101 , based on the wireless communication status of the target area, the location of the transmitting element and the type, direction, beam width and transmission frequency of the target transmission signal are determined.

[0055] It is understood that the wireless communication state here refers to the electronic interference state and the safe communication state. The target area here can be understood as a demarcated area where electronic interference or safe communication is required. The transmitting element here refers to various devices used to transmit signals, such as a single-tone transmitter and a jammer. The target transmission signal here refers to the signal that the transmitting element should send according to the wireless communication state, such as a modulated signal and a single-tone signal.

[0056] In some embodiments, when the target area and wireless communication status are different, the transmitter used, the location of the transmitter, the type, direction, beam width and transmission frequency of the target transmission signal are different.

[0057] For example, when used to limit the target area for secure communication, it is possible but not limited to use a single-tone transmitter to transmit two or more signals from different directions toward the target area, including a modulated signal and a single-tone signal, and secure communication in the target area is achieved by controlling the frequency, power and direction of the transmitted signal. The specific process can be, but is not limited to, as follows:

[0058] First, determine the location of the single-tone transmitter and the type of transmitted signal. In order to achieve secure communication, in addition to the two ends of communication, one or more single-tone transmitters are also required to transmit a modulated signal or a single-tone signal related to the modulated carrier in the communication. The location of the single-tone transmitter should be the most advantageous location under the premise that practical conditions permit. For example, when it is necessary to protect the communication from terminal 1 to terminal 2 from being eavesdropped, in order to reduce the range of the beam intersection area emitted by the single-tone transmitter, the angle from terminal 1 to terminal 2 to the single-tone transmitter should be as vertical as possible. Figure 2 As shown, Figure 2 This is a schematic diagram of the correct position and correct direction of a single-tone transmitter in one embodiment of the present application. Figure 3 This is a schematic diagram of an incorrect position and incorrect direction of a single-tone transmitter according to an embodiment of the present application. Figure 3 As shown, if the angle is close to 0 or 180 degrees, the beam crossing area will be too long, which may lead to poor security communication effect.

[0059] When determining the transmission frequency of the modulated signal and the single tone signal, we can first assume that f sig is the carrier frequency of the normal operation of the communication receiving end, f 1 is the carrier frequency of the modulated signal transmitted by the communication transmitter, f 2 is the frequency of the single tone signal. By selecting a suitable frequency, the intermodulation amount can fall exactly within the receiving end working frequency band: |mf 1 ±nf 2 |=f sig , the signal can be demodulated by the receiving end.

[0060] When used to limit the target area of ​​electronic interference, the jammer can be used, but not limited to, to transmit signals from one or more directions toward the target area. The signals can be modulated signals or single-tone signals, and can also be combined with the original signals in the area (including but not limited to TV signals, wireless communication signals, etc.), and the frequency, power and direction of the transmitted signals can be controlled to effectively interfere with the normal communication in the target area. The specific process can be, but not limited to, as follows:

[0061] First, determine the jammer location. In order to limit the jamming area, two jammers are generally required. The choice of the jammer location is to choose the most favorable location under the premise of practical conditions. For example, in order to reduce the range of the beam intersection area, the angle between the two jammers and the target area should be as vertical as possible.

[0062] Next, determine the direction of the interference signal transmission beam, the beam width, and the transmission frequency of the interference signal. For example, when determining the transmission frequency of the interference signal, two jammers can be used to transmit two specific frequency signals from different directions. Suppose f sig is the target system carrier frequency, f 1 、f′ are the frequencies of the interference signals emitted by the two jammers respectively. By selecting the interference signal f 1 and f 2 The frequency can make the intermodulation amount fall exactly into the signal band: |mf 1 ±nf 2 |=f sig When one of the two interference sources is a single tone signal and the other is a modulated signal, by controlling the interference signal f 1 and f 2 The frequency and bandwidth of the intermodulation signal are adjusted to be equal to those of the useful signal, which has a greater destructive effect on the useful signal. The frequency of the interference signal is kept as far away from the working frequency bands of mobile communication, navigation, broadcasting, television, etc. as possible to reduce the interference to the wireless communication system.

[0063] Furthermore, if there is a relatively strong airborne signal in the target area in addition to the signal of the jamming target, and its direction of arrival, center frequency and bandwidth are known, the original airborne signal and the jammer signal can be used together to complete the electronic jamming in the target area. In order to limit the jamming area, the jammer position is also selected under the premise of practical conditions. The most favorable position. For example, in order to reduce the range of the beam intersection area, the angle from the original airborne signal to the target area to the jammer is as vertical as possible.

[0064] Next, determine the direction, beam width and transmission frequency of the interference signal transmission beam. sig is the target system carrier frequency, f 1 is the center frequency of the original signal in the air, f 2 is the interference signal frequency emitted by the jammer. By controlling the interference signal f 2 The frequency of intermodulation is set to make the intermodulation amount fall accurately into the signal band: |mf 1 ±nf 2 |=f sig .

[0065] Optionally, in one embodiment of the present application, determining the position of the transmitter and the type, direction, beam width and transmission frequency of the target transmission signal includes: converting the position of the transmitter and the center position of the target area into a first coordinate position and a second coordinate position in a coordinate system; calculating the distance between the position of the transmitter and the center of the target area based on the first coordinate position and the second coordinate position; and calculating the beam width based on the distance.

[0066] During the actual execution process, when determining the beam width of the target transmission signal, the present application can, but is not limited to, converting the position of the transmitter and the center position of the target area into a first coordinate position and a second coordinate position in the coordinate system, thereby calculating the distance between the position of the transmitter and the center of the target area based on the first coordinate position and the second coordinate position, and then calculating the beam width of the target transmission signal.

[0067] For example, when determining the beam width of the modulated signal transmission beam and the single-tone signal transmission beam, it can be assumed that the coordinates of the communication transmitting end or the single-tone transmitter are A: (x1, y1, z1), the coordinates of the center of the target area are C: (xc, yc, zc), and the radius of the target area is r. Then, the signal beam transmission direction can be determined to be from A to C, and the transmission distance can be expressed as, but not limited to:

[0068]

[0069] The beam width can be expressed as, but is not limited to:

[0070]

[0071] Similarly, the direction and beam width of the single-tone signal transmission beam can also be determined. For example, assuming that the coordinates of a jammer are B: (x2, y2, z2), the coordinates of the center of the target area are C: (xc, yc, zc), and the radius of the target area is r, then the jammer transmits a beam toward the center of the target area, the transmission direction can be determined to be from B to C, and the transmission distance can be expressed as but not limited to:

[0072]

[0073] The beam width can be expressed as, but is not limited to:

[0074]

[0075] Step S102, transmitting the target transmission signal to the receiver in the target area according to the type, direction, beam width and transmission frequency of the target transmission signal, so as to limit the actual area of ​​wireless communication within the target area in combination with the target transmission signal.

[0076] As a possible implementation method, the embodiment of the present application can transmit two or more target transmission signals toward the target area from different directions when limiting the target area for secure communication, including but not limited to modulated signals and single-tone signals, etc., and can control the frequency, power and direction of the transmission signal, and utilize the nonlinear characteristics of the receiver in the target area to generate a specific signal. By combining the specific signal with the target transmission signal, the actual area of ​​wireless communication can be limited to the target area, thereby ensuring the safety of wireless communication in the target area or causing electronic interference to the wireless communication in the target area.

[0077] For example, when the wireless communication status in the target area is communication security, after determining that the target transmission signal is a modulated signal and a single-tone signal, the intermodulation amount can be made to fall exactly within the working frequency band of the receiving end by selecting a suitable frequency:

[0078] |mf 1 ±nf 2 |=f sig , where f sig is the carrier frequency of the normal operation of the communication receiving end, f 1 is the carrier frequency of the modulated signal transmitted by the communication transmitter, f 2 is the frequency of the single tone signal; then the modulated signal and the single tone signal can be demodulated by the receiving end. At the same time, frequency hopping or other methods are used to continuously change f 1 and f 2 In areas where the two signals cannot be received at the same time, correct demodulation cannot be achieved, thereby ensuring that the wireless communication area is limited to the target area, thereby ensuring the communication security in the target area.

[0079] For example, when the wireless communication state in the target area is electronic interference, the interference signal f 1 and f 2 The frequency and bandwidth of the intermodulation signal are adjusted to be equal to those of the useful signal, which has a greater destructive effect on the useful signal. The frequency of the interference signal is kept as far away from the working frequency bands of mobile communication, navigation, broadcasting, television, etc. as possible to reduce the interference to the wireless communication system.

[0080] Figure 4 A flowchart of a wireless communication method applied to a receiving device provided in an embodiment of the present application.

[0081] like Figure 4 As shown, the wireless communication method includes the following steps:

[0082] In step S401, a target transmission signal sent by a transmitting element is received, wherein the target transmission signal is generated by the transmitting element based on type, direction, beam width and transmission frequency.

[0083] In some embodiments, after the target transmission signal (transmission beam) is transmitted, the present application can utilize a receiving element such as a signal receiver to receive the target transmission signal sent by the transmitting element.

[0084] The target transmission signal is a signal transmitted by the transmitting element based on a determined transmission signal type, direction, beam width and transmission frequency.

[0085] Step S202: Generate a communication signal of a target type based on the target transmission signal and the wireless communication state, so as to perform wireless communication in combination with the target transmission signal.

[0086] As a possible implementation method, the embodiments of the present application can utilize the products of intermodulation and cross-modulation phenomena as communication signals and interference signals to implement area-limited communication signals and interference signals, that is, utilize the intermodulation phenomenon or cross-modulation phenomenon, and use the receiver in the target area to generate signals for communication or interference by controlling the frequency, power and direction of the transmitted signal.

[0087] When implementing this process, after the receiving device receives one or more directionally transmitted radio wave beams, it can use its own (receiver) nonlinear characteristics to form a linear combination of the original signal frequencies within the beam illumination area. This method can not only specify the direction, but also divide the space into small blocks, so that the range of secure communication and the range of effective interference can be limited to a small space according to actual needs, thereby realizing wireless communication in the target area, and effectively improving the accuracy of the regional limitation of wireless communication.

[0088] Optionally, in one embodiment of the present application, a target type communication signal is generated based on a target transmission signal and a wireless communication state to perform wireless communication in combination with the target transmission signal, including: when the wireless communication state is a communication security state, an intermodulation signal is generated to perform anti-eavesdropping processing in wireless communication using the target transmission signal and the intermodulation signal; or, when the wireless communication state is an electronic interference state, an interference signal is generated to perform interference processing in wireless communication within a target area using the target transmission signal and the interference signal.

[0089] Based on other embodiments, it can be understood that the present application can utilize the receiving component to generate a target type of communication signal based on the target transmission signal and the wireless communication status, thereby generating certain intermodulation products in combination with the target transmission signal to achieve wireless communication within the target area.

[0090] For example, when the wireless communication status in the target area is communication security, after the receiver in the target area receives the target transmission signal such as the modulated signal and the single-tone signal, it can generate a specific signal that can be demodulated by itself (the receiver) based on its own (receiver) nonlinear characteristics, and then based on the specific signal and the target transmission signal, the communication signal can be controlled within the target area, and outside the target area, it will not be able to eavesdrop due to the lack of complete signal information.

[0091] For another example, when the wireless communication state in the target area is electronic interference, after the receiver in the target area receives the target transmission signal such as the interference signal and the original signal in the air, it can generate a specific signal with the same or close operating frequency as its own (receiver) based on its own (receiver) nonlinear characteristics, and then based on the specific signal and the target transmission signal, it can cause effective interference to the normal communication of the receiver in the target area.

[0092] Optionally, in one embodiment of the present application, after limiting the actual area of ​​wireless communication within the target area in combination with the target transmission signal, it also includes: obtaining the effect of wireless communication; generating an adjustment instruction for the target transmission signal according to the effect, and sending the adjustment instruction to the transmitter.

[0093] In certain embodiments, in order to ensure that the effect of wireless communication can meet the requirements, the present application can also obtain the effect of wireless communication, so as to generate adjustment instructions about the target transmission signal based on the effect. After the adjustment instructions are sent to the transmitter, the transmitter can adjust the direction, transmission frequency, etc. of the target transmission signal.

[0094] For example, when wireless communication is secure, an adjustment instruction can be sent to the transmitter when the wireless communication effect is not good, and the transmitter can adjust the transmission power of the modulation signal and the single tone signal accordingly. Usually, in order to protect the communication signal in the target area from being eavesdropped, the transmission power of the single tone signal is mainly increased so that a sufficiently large intermodulation signal can be generated in the receiver.

[0095] When wireless communication is electronically jammed, the same principle can be used to monitor the effect of the electronic jamming. When the effect of the electronic jamming is not good, an adjustment instruction is sent to the transmitter, and the transmitter can monitor and adjust the transmission power of the target transmission signal such as the jamming signal accordingly.

[0096] The present application is explained in detail below with two specific embodiments.

[0097] Figure 5 This is a flow chart of limiting the target area of ​​secure communication according to one embodiment of the present application. Figure 5 As shown:

[0098] Step S501, determine the position of the single tone transmitter. In order to achieve safe communication, in addition to the two ends of the communication, one or more single tone transmitters are also required to transmit a single tone signal related to the modulated carrier in the communication. The selection of the position of the single tone transmitter is the most advantageous position under the premise of practical conditions.

[0099] Step S502, determine the direction and beam width of the modulated signal and the single-tone signal transmission beam. Assuming that the coordinates of the communication origin or the single-tone transmitter are A: (x1, y1, z1), the coordinates of the center of the target area are C: (xc, yc, zc), and the radius of the target area is r, then the signal beam transmission direction is from A to C, and the transmission distance is The beam width is:

[0100] Step S503, determine the transmission frequency of the modulation signal and the single tone signal. Assume f sig is the carrier frequency of the normal operation of the communication receiving end, f 1 is the carrier frequency of the modulated signal transmitted by the communication transmitter, f 2 is the frequency of the single tone signal. By selecting a suitable frequency, the intermodulation amount falls exactly within the receiving end working frequency band: |mf 1 ±nf 2 |=f sig , the signal can be demodulated by the receiving end. At the same time, frequency hopping or other methods are used to continuously change f 1 and f 2 , in areas where these two signals cannot be received at the same time, correct demodulation cannot be performed.

[0101] Step S504, monitor and adjust the signal transmission power. During communication, the communication transmitting end and the single-tone transmitter transmit signals according to the above parameters, monitor the communication effect, and adjust the transmission power of the modulated signal and the single-tone signal. In order to protect the modulated signal from being eavesdropped, the transmission power of the single-tone signal is mainly increased so that a sufficiently large intermodulation signal can be generated in the receiver.

[0102] Figure 6 This is a flow chart of limiting the effective interference target area according to one embodiment of the present application. Figure 6 As shown:

[0103] Step S601, determining the jammer position;

[0104] Step S602, determining the direction and beam width of the interference signal transmission beam;

[0105] Step S602, determining the transmission frequency of the interference signal;

[0106] Step S602: Detect and adjust signal transmission power.

[0107] Furthermore, when limiting the effective interference target area, it is divided into two situations: simply using the jammer to transmit the interference signal, and jointly utilizing the original signal in the air and the interference signal transmitted by the jammer.

[0108] Specifically, Figure 7This is a schematic diagram of an embodiment of the present application that uses a jammer to limit an effective jamming target area. Figure 7 As shown:

[0109] (1) Determine the jammer location. In order to limit the interference area, two jammers are required. The jammer location is selected based on the most favorable location under the premise of practical conditions. For example, in order to reduce the range of the beam intersection area, the angle between the two jammers and the target area should be as vertical as possible.

[0110] (2) Determine the direction and beam width of the jammer signal transmission beam. Assume that the coordinates of a jammer are A: (x1, y1, z1), the coordinates of the center of the target area are C: (xc, yc, zc), and the radius of the target area is r. The jammer transmits a beam toward the center of the target area, the transmission direction is from A to C, and the transmission distance is The beam width is:

[0111] (3) Determine the transmission frequency of the interference signal. Transmit two specific frequency signals from different directions. Let f sig is the target system carrier frequency, f 1 、f 2 are the frequencies of interference signals emitted by the two jammers respectively. Figure 8 Schematic diagram of third-order intermodulation of two single-tone interference signals according to an embodiment of the present application, as shown in FIG. Figure 8 As shown, by selecting the interference signal f 1 and f 2 The frequency can make the intermodulation amount fall exactly into the signal band: |mf 1 ±nf 2 |=f sig . Fig. 9 Schematic diagram of third-order intermodulation of a single-tone interference signal and a modulated interference signal according to an embodiment of the present application. Fig. 9 As shown in the figure, when one of the two interference sources is a single tone signal and the other is a modulated signal, by controlling the interference signal f 1 and f 2 The frequency and bandwidth of the intermodulation signal are adjusted to be equal to those of the useful signal, which has a greater destructive effect on the useful signal. The frequency of the interference signal is kept as far away from the working frequency bands of mobile communication, navigation, broadcasting, television, etc. as possible to reduce the interference to the existing wireless communication system.

[0112] (4) Monitor and adjust the signal transmission power. During interference, transmit the signal according to the above parameters, monitor the interference effect, and adjust the transmission power of the interference signal.

[0113] Fig.10 This is a schematic diagram of an embodiment of the present application that combines the original signal in the air with the interference signal to define the effective interference target area. Fig.10 As shown:

[0114] In addition to the jamming target signal, there is also a relatively strong airborne signal in the target area, and its direction, center frequency and bandwidth are known. The process of combining the original airborne signal and the jammer signal to limit the electronic jamming target area is as follows:

[0115] (1) Determine the jammer location. In order to limit the jamming area, the jammer location is selected based on the most favorable location under the premise of practical conditions. For example, in order to reduce the range of the beam intersection area, the angle from the original signal in the air to the target area to the jammer should be as vertical as possible.

[0116] (2) Determine the direction and beam width of the jammer signal transmission beam. Assume that the coordinates of the jammer are A: (x1, y1, z1), the coordinates of the center of the target area are C: (xc, yc, zc), and the radius of the target area is r. The jammer transmits a beam toward the center of the target area, the transmission direction is from A to C, and the transmission distance is The beam width is:

[0117] (3) Determine the transmission frequency of the interference signal. Let f sig is the target system carrier frequency, f 1 is the center frequency of the original signal in the air, f 2 is the interference signal frequency emitted by the jammer. By controlling the interference signal f 2 The frequency of intermodulation is set to make the intermodulation amount fall accurately into the signal band: |mf 1 ±nf 2 |=f sig .

[0118] (4) Monitor and adjust the signal transmission power. During interference, transmit the signal according to the above parameters, monitor the interference effect, and adjust the transmission power of the interference signal.

[0119] According to the wireless communication method proposed in the embodiment of the present application, based on the wireless communication state of the target area, a target transmission signal with a determined type, direction, beam width and transmission frequency can be transmitted by a transmitter with a determined position, and a communication signal of a target type can be generated by a receiver receiving the target transmission signal, so as to limit the actual area of ​​wireless communication within the target area in combination with the target transmission signal. In this way, one or more radio beams are transmitted by a transmitter, and a linear combination of the original signal frequencies is formed by using the nonlinear characteristics of the receiver in the beam irradiation area, that is, by using the intermodulation phenomenon or cross-modulation phenomenon, a signal for communication or interference is generated by controlling the frequency, power and direction of the transmission signal in the receiver of the target area. When the direction of the target transmission signal can be specified, the space can also be divided into small blocks, and the range of safe communication and the range of effective interference are limited to a small space, which effectively improves the accuracy of area limitation. This solves the problem that directional antennas and beamforming technologies in related technologies can only concentrate the main power of the transmitted signal in the direction of the main beam due to actual design and construction limitations, and there will be energy leakage in the side lobe direction, making it impossible for the antenna to completely avoid radiation in the non-main beam direction, and the illumination area in the main beam direction is also large. The signal can be received in the angular area centered on the transmitting antenna, and the accuracy of the area limitation is low.

[0120] Next, the wireless communication device proposed according to the embodiment of the present application is described with reference to the accompanying drawings.

[0121] Fig.11 It is a schematic diagram of the structure of a wireless communication device applied to a transmitting element provided according to an embodiment of the present application.

[0122] like Fig.11 As shown, the wireless communication device 10 applied to the transmitting element includes: a determination module 100 and a limitation module 200 .

[0123] The determination module 100 is used to determine the location of the transmitter and the type, direction, beam width and transmission frequency of the target transmission signal based on the wireless communication status of the target area.

[0124] The limiting module 200 is used to transmit the target transmission signal to the receiver in the target area according to the type, direction, beam width and transmission frequency of the target transmission signal, so as to limit the actual area of ​​wireless communication within the target area in combination with the target transmission signal.

[0125] Optionally, in one embodiment of the present application, the determination module 100 includes: a conversion unit, a first calculation unit and a second calculation unit.

[0126] The conversion unit is used to convert the position of the launcher and the center position of the target area into a first coordinate position and a second coordinate position in the coordinate system.

[0127] The first calculation unit is used to calculate the distance between the position of the launcher and the center of the target area according to the first coordinate position and the second coordinate position.

[0128] The second calculation unit is used to calculate the beam width according to the distance.

[0129] Fig.12 It is a structural diagram of a wireless communication device applied to a receiving element according to an embodiment of the present application.

[0130] like Fig.12 As shown, the wireless communication device 11 applied to the receiving device includes: a receiving module 300 and a communication module 400.

[0131] The receiving module 300 is used to receive a target transmission signal sent by the transmitting element, wherein the target transmission signal is generated by the transmitting element based on the type, direction, beam width and transmission frequency;

[0132] The communication module 400 is used to generate a target type communication signal based on the target transmission signal and the wireless communication state, so as to perform wireless communication in combination with the target transmission signal.

[0133] Optionally, in one embodiment of the present application, the communication module 400 includes: a first processing unit and a second processing unit.

[0134] The first processing unit is used to generate an intermodulation signal when the wireless communication state is a communication security state, so as to use the target transmission signal and the intermodulation signal to perform anti-eavesdropping processing in wireless communication.

[0135] The second processing unit is used to generate an interference signal when the wireless communication state is an electronic interference state, so as to perform interference processing in wireless communication in a target area by using the target transmission signal and the interference signal.

[0136] Optionally, in one embodiment of the present application, it also includes: an acquisition module and an adjustment module.

[0137] The acquisition module is used to acquire the effect of wireless communication after wireless communication is performed in combination with the target transmission signal.

[0138] The adjustment module is used to generate an adjustment instruction for the target transmission signal according to the effect, and send the adjustment instruction to the transmitting element.

[0139] It should be noted that the above explanation of the wireless communication method embodiment is also applicable to the wireless communication device of this embodiment, and will not be repeated here.

[0140] According to the wireless communication device proposed in the embodiment of the present application, based on the wireless communication state of the target area, a target transmission signal with a determined type, direction, beam width and transmission frequency can be transmitted by a transmitter with a determined position, and a communication signal of a target type can be generated by a receiver receiving the target transmission signal, so as to limit the actual area of ​​wireless communication within the target area in combination with the target transmission signal. In this way, one or more radio beams are transmitted by the transmitter, and a linear combination of the original signal frequencies is formed by using the nonlinear characteristics of the receiver in the beam irradiation area, that is, by using the intermodulation phenomenon or cross-modulation phenomenon, a signal for communication or interference is generated by controlling the frequency, power and direction of the transmission signal in the receiver of the target area. When the direction of the target transmission signal can be specified, the space can also be divided into small blocks, and the range of safe communication and the range of effective interference are limited to a small space, which effectively improves the accuracy of area limitation. This solves the problem that directional antennas and beamforming technologies in related technologies can only concentrate the main power of the transmitted signal in the direction of the main beam due to actual design and construction limitations, and there will be energy leakage in the side lobe direction, making it impossible for the antenna to completely avoid radiation in the non-main beam direction, and the illumination area in the main beam direction is also large. The signal can be received in the angular area centered on the transmitting antenna, and the accuracy of the area limitation is low.

[0141] Fig.13 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application. The electronic device may include:

[0142] A memory 1301 , a processor 1302 , and a computer program stored in the memory 1301 and executable on the processor 1302 .

[0143] When the processor 1302 executes the program, the wireless communication method provided in the above embodiment is implemented.

[0144] Furthermore, the electronic device further comprises:

[0145] The communication interface 1303 is used for communication between the memory 1301 and the processor 1302 .

[0146] The memory 1301 is used to store computer programs that can be executed on the processor 1302 .

[0147] The memory 1301 may include a high-speed RAM memory, and may also include a non-volatile memory (non-volatile memory), such as at least one disk memory.

[0148] If the memory 1301, the processor 1302 and the communication interface 1303 are implemented independently, the communication interface 1303, the memory 1301 and the processor 1302 can be connected to each other through a bus and communicate with each other. The bus can be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus. The bus can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Fig.13 Only one thick line is used in the diagram, but this does not mean that there is only one bus or only one type of bus.

[0149] Optionally, in a specific implementation, if the memory 1301, the processor 1302 and the communication interface 1303 are integrated on a chip, the memory 1301, the processor 1302 and the communication interface 1303 can communicate with each other through an internal interface.

[0150] The processor 1302 may be a central processing unit (CPU), or an application specific integrated circuit (ASIC), or one or more integrated circuits configured to implement the embodiments of the present application.

[0151] An embodiment of the present application also provides a computer-readable storage medium on which a computer program is stored. When the program is executed by a processor, the wireless communication method as described above is implemented.

[0152] An embodiment of the present application also provides a computer program product, including a computer program, which can run computer instructions. When the computer instructions are executed by a processor, the wireless communication method provided in the embodiment of the present application is implemented.

[0153] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or N embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0154] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, "N" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0155] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, fragment or portion of code comprising one or N executable instructions for implementing the steps of a custom logical function or process, and the scope of the preferred embodiments of the present application includes alternative implementations in which functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in reverse order depending on the functions involved, which should be understood by technicians in the technical field to which the embodiments of the present application belong.

[0156] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as an ordered list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by an instruction execution system, device or apparatus (such as a computer-based system, a system including a processor, or other system that can fetch instructions from an instruction execution system, device or apparatus and execute instructions), or in combination with these instruction execution systems, devices or apparatuses. For the purpose of this specification, "computer-readable medium" can be any device that can contain, store, communicate, propagate or transmit a program for use by an instruction execution system, device or apparatus, or in combination with these instruction execution systems, devices or apparatuses. More specific examples of computer-readable media (a non-exhaustive list) include the following: an electrical connection with one or N wirings (electronic devices), a portable computer disk box (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable and programmable read-only memory (EPROM or flash memory), a fiber optic device, and a portable compact disk read-only memory (CDROM). In addition, the computer-readable medium may even be paper or other suitable medium on which the program is printed, since the program may be obtained electronically by optically scanning the paper or other medium and then editing, interpreting or processing in other suitable ways as necessary and then storing it in a computer memory.

[0157] It should be understood that the various parts of the present application can be implemented by hardware, software, firmware or a combination thereof. In the above embodiment, the N steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. If implemented by hardware, as in another embodiment, it can be implemented by any one or a combination of multiple of the following technologies known in the art: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0158] A person skilled in the art may understand that all or part of the steps in the method for implementing the above-mentioned embodiment may be completed by instructing related hardware through a program, and the program may be stored in a computer-readable storage medium, which, when executed, includes one or a combination of the steps of the method embodiment.

[0159] In addition, each functional unit in each embodiment of the present application may be integrated into a processing module, or each unit may exist physically separately, or two or more units may be integrated into one module. The above-mentioned integrated module may be implemented in the form of hardware or in the form of a software functional module. If the integrated module is implemented in the form of a software functional module and sold or used as an independent product, it may also be stored in a computer-readable storage medium.

[0160] The storage medium mentioned above may be a read-only memory, a disk or an optical disk, etc. Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limiting the present application. A person of ordinary skill in the art may change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A wireless communication method, characterized in that: Applied to a launcher, wherein the method comprises the following steps: Based on the wireless communication status of the target area, determine the location of the transmitter and the type, direction, beam width and transmission frequency of the target transmission signal; The target transmission signal is transmitted to the receiver in the target area according to the type, direction, beam width and transmission frequency of the target transmission signal, so as to limit the actual area of ​​the wireless communication within the target area in combination with the target transmission signal.

2. The method according to claim 1, characterized in that The step of determining the location of the transmitting device and the type, direction, beam width and transmitting frequency of the target transmitting signal includes: Converting the position of the launcher and the center position of the target area into a first coordinate position and a second coordinate position in a coordinate system; Calculate the distance between the position of the launcher and the center of the target area according to the first coordinate position and the second coordinate position; The beam width is calculated based on the distance.

3. A wireless communication method, characterized in that: Applied to a receiving part, wherein the method comprises the following steps: receiving a target transmission signal sent by a transmitting element, wherein the target transmission signal is generated by the transmitting element based on type, direction, beam width and transmission frequency; Based on the target transmission signal and the wireless communication status, a communication signal of the target type is generated to perform wireless communication in combination with the target transmission signal.

4. The method according to claim 3, characterized in that The generating a communication signal of a target type based on the target transmission signal and the wireless communication state to perform wireless communication in combination with the target transmission signal includes: When the wireless communication state is a communication security state, an intermodulation signal is generated to perform anti-eavesdropping processing in wireless communication using the target transmission signal and the intermodulation signal; Alternatively, when the wireless communication state is an electronic interference state, an interference signal is generated to perform interference processing in wireless communication in a target area using the target transmission signal and the interference signal.

5. The method according to claim 3, characterized in that: After wireless communication is performed in combination with the target transmission signal, the method further includes: Obtaining an effect of the wireless communication; An adjustment instruction for the target emission signal is generated according to the effect, and the adjustment instruction is sent to the emission element.

6. A wireless communication device, characterized in that: Applied to a launcher, wherein the device comprises: A determination module, used to determine the location of the transmitter and the type, direction, beam width and transmission frequency of the target transmission signal based on the wireless communication status of the target area; The limiting module is used to transmit the target transmission signal to the receiver in the target area according to the type, direction, beam width and transmission frequency of the target transmission signal, so as to limit the actual area of ​​the wireless communication within the target area in combination with the target transmission signal.

7. A wireless communication device, characterized in that: Applied to a receiving member, wherein the device comprises: A receiving module, configured to receive a target transmission signal sent by a transmitting element, wherein the target transmission signal is generated by the transmitting element based on a type, a direction, a beam width and a transmission frequency; The communication module is used to generate a communication signal of a target type based on the target transmission signal and the wireless communication state, so as to perform wireless communication in combination with the target transmission signal.

8. An electronic device, characterized in that: include: A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the wireless communication method according to any one of claims 1 to 2 or 3 to 5.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that: The program is executed by a processor to implement the wireless communication method as described in any one of claims 1-2 or 3-5.

10. A computer program product, comprising a computer program, characterized in that When the computer program is executed, it is used to implement the wireless communication method as described in any one of claims 1-2 or 3-5.

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