Distributed cluster communication base station antenna dynamic adjustment method

Abstract

The invention discloses a distributed cluster communication base station antenna dynamic adjustment method, which belongs to the technical field of wireless communication, and comprises the following steps: screening each base station to obtain a high-quality base station; any one of the high-quality base stations serves as a main station, the other high-quality base stations serve as substations, and the position of the main station, the positions of the substations and the signal receiving delay inequality of the substations relative to the main station are obtained; acquiring the position of a target signal source according to the position of the master station, the positions of the substations and the signal receiving delay inequality of the substations relative to the master station; continuously acquiring the position of a target signal source; acquiring the motion state of the target signal source according to the continuously acquired position of the target signal source; and according to the position and the motion state of the target signal source, adjusting the antenna direction of each base station to enable the antenna direction of each base station to directly face the target signal source. According to the method, the position and the motion state of the target signal source can be captured, dynamic adjustment of the base station antenna is realized, and the energy efficiency of distributed cluster communication is improved.

Description

Technical Field

[0001] The invention relates to a method for dynamically adjusting a distributed cluster communication base station antenna, and belongs to the technical field of wireless communications. Background Art

[0002] With the rapid development of modern wireless communication technology, wireless communication networks play an increasingly important role in military, civilian and other fields. In application scenarios with complex conditions, point-to-many and many-to-many distributed cluster communications have been widely practiced. Distributed cluster communications can cover a wider area and improve communication capacity to complete wide-area multi-entity collaboration. At present, the performance of distributed communication is limited by the number of cluster nodes. When the number of cluster nodes is too large, the anti-interference ability of the entire communication system is weakened due to the increase in the number of links. At the same time, stronger radiation power and larger platform support are required to maintain communication effects, which cannot meet the needs of more nodes and wider areas. Summary of the invention

[0003] The object of the present invention is to provide a distributed cluster communication base station antenna dynamic adjustment method, which can capture the position and motion state of a target signal source and realize dynamic adjustment of the base station antenna to improve the energy efficiency of distributed cluster communication.

[0004] In order to achieve the above object, the present invention provides the following technical solutions: In a first aspect, the present invention provides a method for dynamically adjusting a distributed cluster communication base station antenna, comprising: Obtain the position and motion state of the target signal source; According to the location and movement state of the target signal source, adjust the antenna direction of each base station so that the antenna direction of each base station is facing the target signal source; Wherein, obtaining the position of the target signal source includes: Screen each base station to obtain high-quality base stations; Take any one of the high-quality base stations as the main station and the other high-quality base stations as substations, and obtain the position of the main station and the position of each substation, as well as the signal reception delay difference of each substation relative to the main station; The location of the target signal source is obtained according to the location of the main station and the locations of each substation, as well as the signal reception delay difference of each substation relative to the main station; Obtaining the motion state of the target signal source includes: Continuously obtain the position of the target signal source; According to the continuously acquired positions of the target signal sources, the motion state of the target signal sources is acquired.

[0005] In combination with the first aspect, further screening each base station to obtain high-quality base stations includes: Obtaining the frequency offset, signal-to-noise ratio and fading amplitude of the received signal of each base station; Based on the frequency offset, signal-to-noise ratio and fading amplitude of the received signals of each base station, base stations whose received signals meet the preset quality standards are selected as high-quality base stations; The preset quality standard is that the frequency offset is less than a preset frequency offset threshold, the signal-to-noise ratio is greater than a preset signal-to-noise ratio threshold, and the fading amplitude is less than a preset fading amplitude threshold.

[0006] In combination with the first aspect, further, obtaining the frequency offset, signal-to-noise ratio, and fading amplitude of the received signal of each base station includes: Performing a fast Fourier transform on the received signal of each base station to obtain the frequency offset of the received signal of each base station; Calculating the signal-to-noise ratio of the received signal of each base station to obtain the signal-to-noise ratio of the received signal of each base station; Envelope extraction is performed on the received signal of each base station to obtain the fading amplitude of the received signal of each base station.

[0007] In combination with the first aspect, further, obtaining the signal reception delay difference of each substation relative to the main station includes: Obtaining a cross-correlation function between a received signal of the master station and received signals of each slave station; Calculate the signal reception delay difference of each substation relative to the main station according to the cross-correlation function of the received signal of the main station and the received signal of each substation; Among them, the cross-correlation function between the received signal of the master station and the received signal of each substation is: ; in, Indicates that the main station The received signal at the time, Indicates A man standing The received signal at the time, express and The cross-correlation function of Representation and The equivalent autocorrelation function, , express hour The value of express The independent variable, Indicates The signal receiving delay difference of each substation relative to the main station is Indicates the total number of high-quality base stations; The calculation formula for the signal reception delay difference of each substation relative to the main station is: .

[0008] In combination with the first aspect, further, according to the position of the master station and the positions of each substation, and the signal reception delay difference of each substation relative to the master station, obtaining the position of the target signal source includes: According to the location of the master station and the location of each substation, an expression for the difference in signal transmission distance between each substation and the target signal source relative to the master station is constructed; Taylor expansion is performed on the expression of the signal transmission distance difference between each substation and the main station and the target signal source at the initial position of the target signal source to obtain the Taylor expansion formula; Convert Taylor expansion into matrix form; According to the signal reception delay difference of each substation relative to the main station, the signal transmission distance difference of each substation relative to the main station and the target signal source is calculated; According to the signal transmission distance difference between each substation and the main station and the target signal source, the matrix is ​​solved to obtain the position of the target signal source; Among them, the expression of the signal transmission distance difference between each substation and the main station and the target signal source is: ; in, Indicates The signal transmission distance difference between each substation and the target signal source relative to the main station is Indicates the location coordinates of the target signal source, Indicates the location coordinates of the master station, Indicates The location coordinates of the substations, Indicates the total number of high-quality base stations; The Taylor expansion is: ; in, Indicates the signal transmission distance between the master station and the target signal source. Indicates The signal transmission distance between each substation and the target signal source, Represents the initial position coordinates of the target signal source, Indicates The measurement error corresponding to each substation is Obey Gaussian distribution; The matrix is: ; in, , …, Indicates the second, ..., The signal transmission distance difference between each substation and the target signal source relative to the main station is , …, Indicates the second, ..., The signal transmission distance between each substation and the target signal source, , …, Indicates the second, ..., The location coordinates of the substations, , …, Indicates the second, ..., The measurement error corresponding to each substation is , …, Obey Gaussian distribution; The calculation formula for the signal transmission distance difference between each substation and the main station and the target signal source is: ; in, Indicates The signal receiving delay difference of each substation relative to the main station is represents the propagation speed of electromagnetic waves in a vacuum, Indicates The time difference measurement error corresponding to each substation is: Obey Gaussian distribution.

[0009] In combination with the first aspect, further, according to the difference in signal transmission distance between each substation and the main station and the target signal source, solving the matrix formula to obtain the position of the target signal source includes: According to the difference in signal transmission distance between each substation and the main station and the target signal source, the matrix formula is solved to obtain the solution of the matrix formula; The matrix solution is judged. If the matrix solution meets the judgment conditions, the matrix solution is used as the location of the target signal source. Otherwise, let , , , repeatedly solve the matrix formula until the solution of the matrix formula meets the judgment condition; The judgment conditions are: ; in, Indicates the preset decision threshold.

[0010] In combination with the first aspect, further, the motion state of the target signal source includes a vector velocity and a vector acceleration of the target signal source, and according to the continuously acquired position of the target signal source, acquiring the motion state of the target signal source includes: According to the continuously acquired position of the target signal source, the vector velocity of the target signal source is obtained; Continuously obtain the vector velocity of the target signal source; According to the continuously acquired vector velocity of the target signal source, the vector acceleration of the target signal source is obtained; Among them, the calculation formula of the vector velocity of the target signal source is: ; in, , , Indicates the vector velocity of the target signal source axis, axis, The weight of the axis, , express , The position coordinates of the target signal source obtained at every moment, express Moment and The time difference between moments; The calculation formula of the vector acceleration of the target signal source is: ; in, , , The vector acceleration of the target signal source is axis, axis, The weight of the axis, , , express The vector velocity of the target signal source obtained at the moment is axis, axis, The weight of the axis, , , express The vector velocity of the target signal source obtained at the moment is axis, axis, The weight of the axis, express Moment and The time difference of the moment.

[0011] In a second aspect, the present invention provides a distributed cluster communication base station antenna dynamic adjustment device, comprising: A data acquisition module, used to acquire the position and motion state of the target signal source; A dynamic adjustment module is used to adjust the antenna direction of each base station according to the position and motion state of the target signal source so that the antenna direction of each base station is facing the target signal source; Wherein, obtaining the position of the target signal source includes: Screen each base station to obtain high-quality base stations; Take any one of the high-quality base stations as the main station and the other high-quality base stations as substations, and obtain the position of the main station and the position of each substation, as well as the signal reception delay difference of each substation relative to the main station; The location of the target signal source is obtained according to the location of the main station and the locations of each substation, as well as the signal reception delay difference of each substation relative to the main station; Obtaining the motion state of the target signal source includes: Continuously obtain the position of the target signal source; According to the continuously acquired positions of the target signal sources, the motion state of the target signal sources is acquired.

[0012] In a third aspect, the present invention provides a computer device, comprising: Storage medium for storing computer programs; A processor is used to execute the computer program to implement the steps of the distributed cluster communication base station antenna dynamic adjustment method as described in any one of the first aspects.

[0013] In a fourth aspect, the present invention provides a computer-readable storage medium having a computer program stored thereon, wherein when the computer program is executed by a processor, the steps of the method for dynamically adjusting the antenna of a distributed cluster communication base station described in any one of the first aspects are implemented.

[0014] In a fifth aspect, the present invention provides a computer program product, comprising a computer program, which, when executed by a processor, implements the steps of the method for dynamically adjusting the antenna of a distributed cluster communication base station as described in any one of the first aspects.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The distributed cluster communication base station antenna dynamic adjustment method provided by the present invention can capture the position and motion state of the target signal source, and adjust the antenna direction of each base station according to the position and motion state of the target signal source, so that the antenna direction of each base station is facing the target signal source. The base station antenna can be dynamically adjusted, the radiation power of each node in the communication link is improved, the anti-interference ability of the communication system is enhanced, the channel capacity of the distributed cluster communication is broadened, and the energy efficiency of the distributed cluster communication is improved.

[0016] The distributed cluster communication base station antenna dynamic adjustment method provided by the present invention performs quality assessment and screening on the signals on each communication link in the distributed cluster system, can timely monitor and feedback the channel quality of each communication link, ensure that the link signals involved in the calculation are high-quality signals, and thus improve the calculation accuracy of the position and motion state of the target signal source.

[0017] The distributed cluster communication base station antenna dynamic adjustment method provided by the present invention can accurately locate the position of the target signal source by using three-dimensional coordinates, and can obtain more accurate calculation results by using Taylor expansion iterative calculation.

[0018] The distributed cluster communication base station antenna dynamic adjustment method provided by the present invention calculates the motion state of the target signal source and monitors the motion trajectory of the target signal source in real time.

[0019] The distributed cluster communication base station antenna dynamic adjustment method provided by the present invention can concentrate the antenna signals of each base station and provide stronger communication performance under a certain transmission power. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a flow chart of a method for dynamically adjusting antennas of a distributed cluster communication base station provided by an embodiment of the present invention; Figure 2 is a schematic diagram of a distributed cluster communication scenario provided by an embodiment of the present invention; Figure 3 is a flow chart of a method for screening high-quality signals provided by an embodiment of the present invention; Figure 4 1 is a schematic diagram of the signal reception delay difference between two base stations provided in an embodiment of the present invention, wherein (a) is a time domain display diagram of the signal reception delay difference between base station 1 and base station 2, and (b) is a schematic diagram of the signal reception delay difference between base station 1 and base station 2 obtained by using a cross-correlation method; Figure 5 is a flow chart of a method for determining the position of a target signal source provided by an embodiment of the present invention; Figure 6 is a schematic diagram of the motion trajectory of a target signal source provided by an embodiment of the present invention; Figure 7 It is a schematic diagram of components of the vector velocity of the target signal source on each coordinate axis provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0021] The technical solution of the present application is further described in detail below in conjunction with specific implementation methods.

[0022] The 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 with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and should not be construed as limiting the present application. In the absence of conflict, the embodiments of the present application and the technical features in the embodiments may be combined with each other.

[0023] Embodiment 1: This embodiment provides a distributed cluster communication base station antenna dynamic adjustment method. The distributed cluster communication base station antenna dynamic adjustment method provided in this embodiment can be applied to a terminal and can be executed by a distributed cluster communication base station antenna dynamic adjustment device. The device can be implemented by software and / or hardware. The device can be integrated in a terminal, for example: any tablet computer or computer device with communication function.

[0024] Figure 1 is a flow chart of a method for dynamically adjusting antennas of a distributed cluster communication base station provided in this embodiment. This flow chart only shows the logical sequence of the method in this embodiment. Different methods can be used without conflict. Figure 1 The steps shown or described are accomplished in the order shown.

[0025] like Figure 1 As shown, the distributed cluster communication base station antenna dynamic adjustment method provided in this embodiment includes: Obtain the position and motion state of the target signal source; According to the location and movement status of the target signal source, adjust the antenna direction of each base station so that the antenna direction of each base station is facing the target signal source.

[0026] In this embodiment, obtaining the position of the target signal source includes: Screen each base station to obtain high-quality base stations; Take any one of the high-quality base stations as the main station and the other high-quality base stations as substations, and obtain the position of the main station and the position of each substation, as well as the signal reception delay difference of each substation relative to the main station; The location of the target signal source is obtained based on the location of the main station and the locations of each substation, as well as the signal reception delay difference of each substation relative to the main station.

[0027] In this embodiment, obtaining the motion state of the target signal source includes: Continuously obtain the position of the target signal source; According to the continuously acquired positions of the target signal sources, the motion state of the target signal sources is acquired.

[0028] The distributed cluster communication base station antenna dynamic adjustment method provided in this embodiment can capture the position and motion state of the target signal source, and adjust the antenna direction of each base station according to the position and motion state of the target signal source, so that the antenna direction of each base station is facing the target signal source. It can realize dynamic adjustment of the base station antenna, improve the radiation power of each node in the communication link, enhance the anti-interference capability of the communication system, broaden the channel capacity of the distributed cluster communication, and thereby improve the energy efficiency of the distributed cluster communication.

[0029] Embodiment 2: This embodiment provides a distributed cluster communication base station antenna dynamic adjustment method. Based on Embodiment 1, the distributed cluster communication base station antenna dynamic adjustment method provided in this embodiment specifically includes the following steps: Step 1: Obtain the position and motion state of the target signal source; In this embodiment, obtaining the position of the target signal source specifically includes the following steps: Step 1: Screen each base station to obtain high-quality base stations; In this embodiment, screening each base station to obtain a high-quality base station specifically includes the following steps: Step ①: Obtain the frequency offset, signal-to-noise ratio and fading amplitude of the received signal of each base station; In this embodiment, obtaining the frequency offset, signal-to-noise ratio, and fading amplitude of the received signal of each base station specifically includes the following steps: Step a: Performing a fast Fourier transform on the received signal of each base station to obtain the frequency offset of the received signal of each base station; Step b: Calculate the signal-to-noise ratio of the received signal of each base station to obtain the signal-to-noise ratio of the received signal of each base station; Step c: extracting the envelope of the received signal of each base station to obtain the fading amplitude of the received signal of each base station.

[0030] Step ②: Based on the frequency offset, signal-to-noise ratio and fading amplitude of the received signal of each base station, the base stations whose received signals meet the preset quality standards are selected as high-quality base stations.

[0031] In this embodiment, the preset quality standard is that the frequency offset is less than a preset frequency offset threshold, the signal-to-noise ratio is greater than a preset signal-to-noise ratio threshold, and the fading amplitude is less than a preset fading amplitude threshold.

[0032] like Figure 3 As shown, the quality of each received signal is evaluated according to the frequency offset, signal-to-noise ratio and fading amplitude of each received signal, and the received signals that meet the preset quality standards are screened out as high-quality signals.

[0033] A received signal whose frequency offset is less than a preset frequency offset threshold, whose signal-to-noise ratio is greater than a preset signal-to-noise ratio threshold, and whose fading amplitude is less than a preset fading amplitude threshold is a received signal that meets the preset quality standard. A received signal that meets the preset quality standard is a high-quality signal, and the base station corresponding to the high-quality signal is a high-quality base station.

[0034] Specifically, Figure 2 As shown, the total number of base stations is , No. Base stations in The received signal at time ,right Perform fast Fourier transform to obtain Frequency deviation ,right Calculate the signal-to-noise ratio and obtain Signal-to-noise ratio ,right Perform envelope extraction to obtain The decline .

[0035] Set the frequency deviation threshold to , the signal-to-noise ratio threshold is , the fading amplitude threshold is .

[0036] like , , If both are established, then Meet the quality standards, accordingly, determine the base stations are high-quality base stations.

[0037] In this embodiment, the frequency offset threshold , signal-to-noise ratio threshold and the fading amplitude threshold All of them can be set according to actual needs.

[0038] The distributed cluster communication base station antenna dynamic adjustment method provided in this embodiment performs quality assessment and screening on the signals on each communication link within the distributed cluster system, and can timely monitor and feedback the channel quality of each communication link to ensure that the link signals involved in the calculation are high-quality signals, thereby improving the calculation accuracy of the position and motion state of the target signal source.

[0039] Step 2: Take any one of the high-quality base stations as the main station and the other high-quality base stations as substations, and obtain the position of the main station and the positions of each substation, as well as the signal reception delay difference of each substation relative to the main station; In this embodiment, obtaining the signal reception delay difference of each substation relative to the main station specifically includes the following steps: Step ①: Obtain the cross-correlation function between the received signal of the master station and the received signal of each slave station; In this embodiment, the cross-correlation function between the received signal of the master station and the received signal of each slave station is: ; in, Indicates that the main station The received signal at the time, Indicates A man standing The received signal at the time, express and The cross-correlation function of Representation and The equivalent autocorrelation function, , express hour The value of express The independent variable, Indicates The signal receiving delay difference of each substation relative to the main station is Indicates the total number of high-quality base stations.

[0040] Step ②: Calculate the signal reception delay difference of each substation relative to the main station based on the cross-correlation function between the received signal of the main station and the received signal of each substation.

[0041] In this embodiment, the calculation formula for the signal reception delay difference of each substation relative to the main station is: .

[0042] Specifically, the main station Received signal at the time for: ; No. A man standing The received signal at the time for: ; in, Indicates that the target signal source is The transmission signal at the time, Indicates the signal reception delay of the master station. Indicates The signal receiving delay of each substation, represents the additive noise corresponding to the master station, Indicates The additive noise corresponding to each substation.

[0043] make , The equivalent expression is: ; but The equivalent expression is: ; and The cross-correlation function is: ; in, is the autocorrelation function and satisfies ,therefore, It can be obtained by detecting the peak value, that is: .

[0044] In a possible embodiment, the time domain display of the signal reception delay difference between base station 1 and base station 2 is as follows: Figure 4 As shown in (a), Figure 4 From (a), we can see that the signal reception delay difference between base station 1 and base station 2 is 0.1s. The received signals of base station 1 and base station 2 are cross-correlated to obtain the signal reception delay difference between base station 1 and base station 2. The signal reception delay difference between base station 1 and base station 2 obtained by cross-correlation method is as follows: Figure 4 As shown in (b), Figure 4 From (b), we can see that the signal reception delay difference between base station 1 and base station 2 obtained by the cross-correlation method is 0.1s.

[0045] Step 3: According to the location of the master station and the locations of each substation, as well as the signal reception delay difference of each substation relative to the master station, the location of the target signal source is obtained.

[0046] In this embodiment, according to the position of the master station and the positions of each substation, and the signal reception delay difference of each substation relative to the master station, obtaining the position of the target signal source specifically includes the following steps: Step ①: Based on the location of the master station and the location of each substation, construct an expression for the difference in signal transmission distance between each substation and the target signal source relative to the master station; In this embodiment, the expression for the difference in signal transmission distance between each substation and the target signal source relative to the main station is: ; in, Indicates The signal transmission distance difference between each substation and the target signal source relative to the main station is Indicates the location coordinates of the target signal source, Indicates the location coordinates of the master station, Indicates The location coordinates of the substations, Indicates the total number of high-quality base stations.

[0047] Step ②: Taylor expand the expression of the signal transmission distance difference between each substation and the main station and the target signal source at the initial position of the target signal source to obtain the Taylor expansion; In this embodiment, the Taylor expansion is: ; in, Indicates the signal transmission distance between the master station and the target signal source. Indicates The signal transmission distance between each substation and the target signal source, Represents the initial position coordinates of the target signal source, Indicates The measurement error corresponding to each substation is Obey Gaussian distribution.

[0048] Step ③: Convert Taylor expansion into matrix form; In this embodiment, the matrix is: ; in, , …, Indicates the second, ..., The signal transmission distance difference between each substation and the target signal source relative to the main station is , …, Indicates the second, ..., The signal transmission distance between each substation and the target signal source, , …, Indicates the second, ..., The location coordinates of the substations, , …, Indicates the second, ..., The measurement error corresponding to each substation is , …, Obey Gaussian distribution.

[0049] Step ④: Calculate the signal transmission distance difference between each substation and the main station and the target signal source based on the signal reception delay difference between each substation and the main station; In this embodiment, the calculation formula for the signal transmission distance difference between each sub-station and the target signal source relative to the main station is: ; in, Indicates The signal receiving delay difference of each substation relative to the main station is represents the propagation speed of electromagnetic waves in a vacuum, Indicates The time difference measurement error corresponding to each substation is: Obey Gaussian distribution.

[0050] Step ⑤: According to the difference in signal transmission distance between each substation and the main station and the target signal source, the matrix is ​​solved to obtain the position of the target signal source.

[0051] In this embodiment, Figure 5As shown, according to the signal transmission distance difference between each substation and the main station and the target signal source, solving the matrix formula and obtaining the position of the target signal source specifically includes the following steps: Step a: Solve the matrix equation according to the signal transmission distance difference between each substation and the main station and the target signal source to obtain the solution of the matrix equation; Specifically, the matrix is ​​solved according to the difference in signal transmission distance between each substation and the main station and the target signal source, that is, according to the difference in signal transmission distance between each substation and the main station and the target signal source, the matrix is ​​solved. , , Therefore, the matrix solution is , , The specific value of .

[0052] Step b: Determine the matrix solution. If the matrix solution meets the determination conditions, the matrix solution is used as the location of the target signal source. Otherwise, , , , repeatedly solve the matrix formula until the solution of the matrix formula meets the judgment conditions.

[0053] In this embodiment, the determination conditions are: ; in, Indicates the preset decision threshold.

[0054] Specifically, if the solution is , , The specific value of , then directly obtain the position coordinates of the target signal source .

[0055] In this embodiment, the determination threshold Specific settings can be made according to actual needs to obtain the accuracy and calculation speed that meet actual needs.

[0056] The distributed cluster communication base station antenna dynamic adjustment method provided in this embodiment can accurately locate the position of the target signal source by using three-dimensional coordinates, and can obtain more accurate calculation results by using Taylor expansion iterative calculation.

[0057] In this embodiment, obtaining the motion state of the target signal source specifically includes the following steps: Step 1: Continuously obtain the position of the target signal source; Step 2: According to the continuously acquired position of the target signal source, the motion state of the target signal source is obtained.

[0058] In this embodiment, the motion state of the target signal source includes the vector velocity of the target signal source and the vector acceleration of the target signal source.

[0059] According to the continuously acquired position of the target signal source, obtaining the motion state of the target signal source specifically includes the following steps: Step ①: According to the continuously acquired position of the target signal source, the vector velocity of the target signal source is obtained; In this embodiment, the calculation formula of the vector velocity of the target signal source is: ; in, , , Indicates the vector velocity of the target signal source axis, axis, The weight of the axis, , express , The position coordinates of the target signal source obtained at every moment, express Moment and The time difference of the moment.

[0060] In this embodiment, Specific settings can be made according to actual needs to meet the system balance requirements of time resolution and computing speed.

[0061] Step ②: Continuously obtain the vector velocity of the target signal source; Step ③: According to the continuously acquired vector velocity of the target signal source, the vector acceleration of the target signal source is obtained.

[0062] In this embodiment, the calculation formula of the vector acceleration of the target signal source is: ; in, , , The vector acceleration of the target signal source is axis, axis, The weight of the axis, , , express The vector velocity of the target signal source obtained at the moment is axis, axis, The weight of the axis, , , express The vector velocity of the target signal source obtained at the moment is axis, axis, The weight of the axis, express Moment and The time difference of the moment.

[0063] In this embodiment, Specific settings can be made according to actual needs to meet the system balance requirements of time resolution and computing speed.

[0064] The distributed cluster communication base station antenna dynamic adjustment method provided in this embodiment calculates the motion state of the target signal source and monitors the motion trajectory of the target signal source in real time.

[0065] In a possible embodiment, according to the position and motion state of the target signal source, the motion trajectory of the target signal source is obtained as follows: Figure 6 As shown in the spatial coordinate system, the vector velocity of the target signal source is axis, axis, The axis components are Figure 7 shown. Figure 7 middle, , , Indicates the vector velocity of the target signal source axis, axis, The weight of the axis.

[0066] Step 2: According to the location and movement state of the target signal source, adjust the antenna direction of each base station so that the antenna direction of each base station is facing the target signal source.

[0067] In this embodiment, the position and motion state of the target signal source are acquired in real time, and the antenna direction of each base station is adjusted in real time according to the position and motion state of the target signal source, so that the antenna direction of each base station is facing the target signal source, thereby realizing dynamic adjustment of the distributed cluster communication base station antenna.

[0068] The distributed cluster communication base station antenna dynamic adjustment method provided in this embodiment includes screening high-quality channel signals, extracting delay parameters based on the screened signals, calculating the time difference of the target source signal reaching each base station, calculating the position of the target signal source through geometric relationships, and extracting the motion state of the target signal source. According to the precise position and motion state of the target signal source, beamforming is used to aggregate multiple antenna signals to form a beam pointing to the target, thereby improving the system communication reliability and channel capacity. This method can accurately locate the position of the target signal source, and through continuous directional aggregation energy, greatly improve the communication efficiency of the communication platform in motion.

[0069] Embodiment 3: This embodiment provides a distributed cluster communication base station antenna dynamic adjustment device, including: A data acquisition module, used to acquire the position and motion state of the target signal source; A dynamic adjustment module is used to adjust the antenna direction of each base station according to the position and motion state of the target signal source so that the antenna direction of each base station is facing the target signal source; Wherein, obtaining the position of the target signal source includes: Screen each base station to obtain high-quality base stations; Take any one of the high-quality base stations as the main station and the other high-quality base stations as substations, and obtain the position of the main station and the position of each substation, as well as the signal reception delay difference of each substation relative to the main station; The location of the target signal source is obtained according to the location of the main station and the locations of each substation, as well as the signal reception delay difference of each substation relative to the main station; Obtaining the motion state of the target signal source includes: Continuously obtain the position of the target signal source; According to the continuously acquired positions of the target signal sources, the motion state of the target signal sources is acquired.

[0070] The distributed cluster communication base station antenna dynamic adjustment device provided in this embodiment can execute the distributed cluster communication base station antenna dynamic adjustment method provided in Embodiment 1 or Embodiment 2, and has the corresponding functional modules and beneficial effects of the execution method.

[0071] Embodiment 4: This embodiment provides a computer device, including: Storage medium for storing computer programs; The processor is used to execute a computer program to implement the steps of the method for dynamically adjusting the antenna of a distributed cluster communication base station in embodiment 1 or embodiment 2.

[0072] Embodiment 5: This embodiment provides a computer-readable storage medium on which a computer program is stored. When the computer program is executed by a processor, the steps of the method for dynamically adjusting the antenna of a distributed cluster communication base station in Embodiment 1 or Embodiment 2 are implemented.

[0073] Embodiment 6: This embodiment provides a computer program product, including a computer program. When the computer program is executed by a processor, the steps of the method for dynamically adjusting the antenna of a distributed cluster communication base station in Embodiment 1 or Embodiment 2 are implemented.

[0074] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems or computer program products. Therefore, the present application may take the form of a complete hardware embodiment, a complete software embodiment or an embodiment combining software and hardware. Moreover, the present application may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program codes.

[0075] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems) and computer program products according to the embodiments of the present application. It should be understood that each process and / or block in the flowchart and / or block diagram and the combination of the processes and / or blocks in the flowchart and / or block diagram can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0076] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture including an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0077] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process in the computer or other programmable device. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0078] The above are only preferred implementations of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A method for dynamically adjusting antennas of a distributed cluster communication base station, characterized in that: include: Obtain the position and motion state of the target signal source; According to the location and movement state of the target signal source, adjust the antenna direction of each base station so that the antenna direction of each base station is facing the target signal source; Wherein, obtaining the position of the target signal source includes: Screen each base station to obtain high-quality base stations; Take any one of the high-quality base stations as the main station and the other high-quality base stations as substations, and obtain the position of the main station and the position of each substation, as well as the signal reception delay difference of each substation relative to the main station; The location of the target signal source is obtained according to the location of the main station and the locations of each substation, as well as the signal reception delay difference of each substation relative to the main station; Obtaining the motion state of the target signal source includes: Continuously obtain the position of the target signal source; According to the continuously acquired positions of the target signal sources, the motion state of the target signal sources is acquired.

2. The distributed cluster communication base station antenna dynamic adjustment method according to claim 1, characterized in that: Screen each base station and obtain high-quality base stations including: Obtaining the frequency offset, signal-to-noise ratio and fading amplitude of the received signal of each base station; Based on the frequency offset, signal-to-noise ratio and fading amplitude of the received signals of each base station, base stations whose received signals meet the preset quality standards are selected as high-quality base stations; The preset quality standard is that the frequency offset is less than a preset frequency offset threshold, the signal-to-noise ratio is greater than a preset signal-to-noise ratio threshold, and the fading amplitude is less than a preset fading amplitude threshold.

3. The method for dynamically adjusting the antenna of a distributed cluster communication base station according to claim 2, characterized in that: Obtaining the frequency offset, signal-to-noise ratio and fading amplitude of the received signal of each base station includes: Performing a fast Fourier transform on the received signal of each base station to obtain the frequency offset of the received signal of each base station; Calculating the signal-to-noise ratio of the received signal of each base station to obtain the signal-to-noise ratio of the received signal of each base station; Envelope extraction is performed on the received signal of each base station to obtain the fading amplitude of the received signal of each base station.

4. The method for dynamically adjusting the antenna of a distributed cluster communication base station according to claim 1, characterized in that: Obtaining the signal reception delay difference of each substation relative to the main station includes: Obtaining a cross-correlation function between a received signal of the master station and received signals of each slave station; Calculate the signal reception delay difference of each substation relative to the main station according to the cross-correlation function of the received signal of the main station and the received signal of each substation; Among them, the cross-correlation function between the received signal of the master station and the received signal of each substation is: ； in, Indicates that the main station The received signal at the time, Indicates A man standing The received signal at the time, express and The cross-correlation function of Representation and The equivalent autocorrelation function, , express hour The value of express The independent variable, Indicates The signal receiving delay difference of each substation relative to the main station is Indicates the total number of high-quality base stations; The calculation formula for the signal reception delay difference of each substation relative to the main station is: 。 5. The method for dynamically adjusting the antenna of a distributed cluster communication base station according to claim 1, characterized in that: According to the location of the master station and each substation, as well as the signal reception delay difference of each substation relative to the master station, the location of the target signal source is obtained including: According to the location of the master station and the location of each substation, an expression for the difference in signal transmission distance between each substation and the target signal source relative to the master station is constructed; Taylor expansion is performed on the expression of the signal transmission distance difference between each substation and the main station and the target signal source at the initial position of the target signal source to obtain the Taylor expansion formula; Convert Taylor expansion into matrix form; According to the signal reception delay difference of each substation relative to the main station, the signal transmission distance difference of each substation relative to the main station and the target signal source is calculated; According to the signal transmission distance difference between each substation and the main station and the target signal source, the matrix is ​​solved to obtain the position of the target signal source; Among them, the expression of the signal transmission distance difference between each substation and the main station and the target signal source is: ； in, Indicates The signal transmission distance difference between each substation and the target signal source relative to the main station is Indicates the location coordinates of the target signal source, Indicates the location coordinates of the master station, Indicates The location coordinates of the substations, Indicates the total number of high-quality base stations; The Taylor expansion is: ； in, Indicates the signal transmission distance between the master station and the target signal source. Indicates The signal transmission distance between each substation and the target signal source, Represents the initial position coordinates of the target signal source, Indicates The measurement error corresponding to each substation is Obey Gaussian distribution; The matrix is: ； in, , …, Indicates the second, ..., The signal transmission distance difference between each substation and the target signal source relative to the main station is , …, Indicates the second, ..., The signal transmission distance between each substation and the target signal source, , …, Indicates the second, ..., The location coordinates of the substations, , …, Indicates the second, ..., The measurement error corresponding to each substation is , …, Obey Gaussian distribution; The calculation formula for the signal transmission distance difference between each substation and the main station and the target signal source is: ； in, Indicates The signal receiving delay difference of each substation relative to the main station is represents the propagation speed of electromagnetic waves in a vacuum, Indicates The time difference measurement error corresponding to each substation is: Obey Gaussian distribution.

6. The method for dynamically adjusting the antenna of a distributed cluster communication base station according to claim 5, characterized in that: According to the signal transmission distance difference between each substation and the main station and the target signal source, the matrix is ​​solved to obtain the position of the target signal source including: According to the difference in signal transmission distance between each substation and the main station and the target signal source, the matrix formula is solved to obtain the solution of the matrix formula; The matrix solution is judged. If the matrix solution meets the judgment conditions, the matrix solution is used as the location of the target signal source. Otherwise, let , , , repeatedly solve the matrix formula until the solution of the matrix formula meets the judgment condition; The judgment conditions are: ； in, Indicates the preset decision threshold.

7. The method for dynamically adjusting the antenna of a distributed cluster communication base station according to claim 1, characterized in that: The motion state of the target signal source includes the vector velocity and the vector acceleration of the target signal source. According to the continuously acquired position of the target signal source, the motion state of the target signal source is acquired including: According to the continuously acquired position of the target signal source, the vector velocity of the target signal source is obtained; Continuously obtain the vector velocity of the target signal source; According to the continuously acquired vector velocity of the target signal source, the vector acceleration of the target signal source is obtained; Among them, the calculation formula of the vector velocity of the target signal source is: ； in, , , Indicates the vector velocity of the target signal source axis, axis, The weight of the axis, , express , The position coordinates of the target signal source obtained at every moment, express Moment and The time difference between moments; The calculation formula of the vector acceleration of the target signal source is: ； in, , , The vector acceleration of the target signal source is axis, axis, The weight of the axis, , , express The vector velocity of the target signal source obtained at the moment is axis, axis, The weight of the axis, , , express The vector velocity of the target signal source obtained at the moment is axis, axis, The weight of the axis, express Moment and The time difference of the moment.

8. A distributed cluster communication base station antenna dynamic adjustment device, characterized in that: include: A data acquisition module, used to acquire the position and motion state of the target signal source; A dynamic adjustment module is used to adjust the antenna direction of each base station according to the position and motion state of the target signal source so that the antenna direction of each base station is facing the target signal source; Wherein, obtaining the position of the target signal source includes: Screen each base station to obtain high-quality base stations; Take any one of the high-quality base stations as the main station and the other high-quality base stations as substations, and obtain the position of the main station and the position of each substation, as well as the signal reception delay difference of each substation relative to the main station; The location of the target signal source is obtained according to the location of the main station and the locations of each substation, as well as the signal reception delay difference of each substation relative to the main station; Obtaining the motion state of the target signal source includes: Continuously obtain the position of the target signal source; According to the continuously acquired positions of the target signal sources, the motion state of the target signal sources is acquired.

9. A computer system, characterized in that: include: Storage medium for storing computer programs; A processor is used to execute the computer program to implement the steps of the distributed cluster communication base station antenna dynamic adjustment 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, the steps of the distributed cluster communication base station antenna dynamic adjustment method according to any one of claims 1 to 7 are implemented.

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