Communication coverage expansion method and device of radio frequency antenna

Abstract

The invention relates to the technical field of radio frequency antenna equipment, in particular to a communication coverage expansion method and device of a radio frequency antenna. When one type of coverage expansion abnormity exists in the communication process of the radio frequency antenna, the missing incomplete coverage range in the inaccurate coverage range is acquired, and the required bandwidth when the incomplete coverage range reaches the power spectrum density of the specified coverage range is calculated so as to reconfigure the communication emission bandwidth to expand the communication emission coverage range of the radio frequency antenna; and when the second-class coverage expansion of the radio frequency antenna is abnormal, calculating an equation solution difference value between an ideal difference equation solution and an actual difference equation solution by solving a curve difference equation of the ideal signal strength frequency spectrum and the actual signal strength frequency spectrum to adjust the communication receiving sensitivity so as to expand the communication receiving coverage range of the radio frequency antenna. The condition that the communication coverage range does not meet the specified range when the radio frequency antenna transmits and receives the electromagnetic wave signal can be optimized and adjusted, so that the communication coverage range of the radio frequency antenna is reasonably expanded.

Description

Technical Field

[0001] The present invention relates to the technical field of radio frequency antenna equipment, and in particular to a method and device for extending the communication coverage of a radio frequency antenna. Background Art

[0002] RF antennas are key components in wireless communication systems, and their main function is to transmit and receive electromagnetic signals. However, in practical applications, the communication coverage of RF antennas is usually limited by antenna design parameters, environmental conditions, and signal propagation characteristics. Especially in complex environments, such as densely built-up areas in cities, mountainous terrain, or underground spaces, RF signals are easily affected by reflection, attenuation, and shielding, resulting in insufficient coverage or communication blind spots. This poses a severe challenge to the stability and service quality of wireless communication networks. In the process of transmitting or receiving electromagnetic wave signals, the existing RF antennas may cause changes in the local area of ​​communication coverage due to improper control modes, which makes the communication coverage of the RF antenna unable to meet the signal communication requirements, making it difficult for the RF antenna to accurately transmit and receive signals, reducing the transmission distance and signal quality of the signal data. In addition, it is difficult for existing RF antennas to make corresponding targeted optimization of communication coverage expansion based on the above problems, which limits the area where the RF antenna sends and receives signals, greatly reducing the working performance and signal transmission efficiency of the RF antenna. Summary of the invention

[0003] The present invention overcomes the deficiencies of the prior art and provides a method and device for extending the communication coverage of a radio frequency antenna.

[0004] To achieve the above object, the technical solution adopted by the present invention is:

[0005] A first aspect of the present invention provides a method for extending communication coverage of a radio frequency antenna, comprising the following steps:

[0006] S102: constructing a dynamic communication coverage model when the radio frequency antenna transmits and receives signals in the target communication coverage area, obtaining the resident communication coverage through the dynamic communication coverage model, analyzing and determining the resident communication coverage and the specified communication coverage in the color domain, and generating a communication coverage determination result;

[0007] S104: constructing a global two-dimensional contour map of all inaccurate coverage areas based on the communication coverage determination result, obtaining the instantaneous change amplitude of the RF antenna through the contour line density of different sub-blocks in the global two-dimensional contour map, and calculating the probability of generating abnormal data of actual signals due to the change of communication coverage areas in different areas by using the instantaneous change amplitude, so as to obtain suspicious coverage areas;

[0008] S106: Obtain the transient steepness of the contour lines in each suspicious coverage area, construct a peak space field on the suspicious coverage area pattern map, plan and generate a first field plane and a second field plane in the peak space field based on the transient steepness, and obtain a first type of communication coverage extension anomaly and a second type of communication coverage extension anomaly by analyzing the spatial coordinates between the first field plane and the second field plane;

[0009] S108: When a type of coverage extension anomaly exists during the communication process of the radio frequency antenna, the incomplete coverage range missing from the inaccurate coverage range is obtained, and the required bandwidth when the incomplete coverage range reaches the power spectrum density of the specified coverage range is calculated, so as to reconfigure the communication transmission bandwidth to expand the communication transmission coverage range of the radio frequency antenna;

[0010] S110: When there is a type II coverage extension anomaly during the RF antenna communication process, the communication reception sensitivity is adjusted by solving the curve differential equation of the ideal signal strength spectrum and the actual signal strength spectrum, and calculating the difference between the ideal differential equation solution and the actual differential equation solution to expand the communication reception coverage of the RF antenna.

[0011] More specifically, the step S102 includes the following steps:

[0012] Acquire a communication log of the radio frequency antenna and a target communication coverage area, and acquire a plurality of multi-dimensional communication parameters transmitted and received by the radio frequency antenna in the target communication coverage area in a preset continuous time sequence through the communication log;

[0013] Performing dynamic least squares calculation and analysis on the plurality of multi-dimensional communication parameters by recursive least squares method, to obtain a dynamic communication coverage range model of the radio frequency antenna in the target communication coverage area on a preset continuous time sequence;

[0014] Construct a virtual coverage color boundary of the target communication coverage area, obtain the timing nodes where the RF antenna generates a number of actual signal abnormal data within a preset continuous time sequence and the RF communication task requirements, and extract the specified communication coverage range of the target communication coverage area according to the RF communication task requirements;

[0015] The prescribed communication coverage range is identified and queried through a virtual coverage color domain to obtain a virtual coverage color domain corresponding to the prescribed communication coverage range, which is defined as the prescribed coverage color domain, and the communication coverage range on the timing node corresponding to each actual signal abnormal data is stripped out in the dynamic communication coverage model, which is defined as the resident communication coverage range;

[0016] Identify and query the color interval expression of the resident communication coverage range in the virtual coverage color domain, and obtain the virtual coverage color domain of the resident communication coverage range, which is defined as the resident coverage color domain;

[0017] Determine whether the resident coverage color domain completely covers all virtual coverage color values ​​in the specified coverage color domain. If it is completely covered, mark the resident communication coverage range as an accurate coverage range; if it is not completely covered, mark the resident communication coverage range as an inaccurate coverage range, and generate a communication coverage determination result.

[0018] More specifically, the step S104 includes the following steps:

[0019] Based on the communication coverage determination result, all inaccurate coverage ranges of the radio frequency antenna in a continuous time sequence are acquired, and the coverage altitude boundary point of each inaccurate coverage range is simultaneously preset;

[0020] The spatial coverage height value of each inaccurate coverage range and the altitude value at each corresponding coverage altitude boundary point are obtained through the resident communication coverage range dynamic model;

[0021] Construct a two-dimensional contour map, map the spatial coverage height value of each inaccurate coverage range and the altitude value at each corresponding coverage altitude boundary point to the two-dimensional contour map for fitting in the dynamic resident communication coverage range, and generate a global two-dimensional contour map of all inaccurate coverage ranges;

[0022] Acquire a predetermined radio frequency control strategy of the radio frequency antenna at different distances in the target communication coverage area at a preset time sequence, and divide the global two-dimensional contour map into N sub-blocks based on the predetermined radio frequency control strategy;

[0023] Acquire the contour line distribution density formed in each sub-block at a preset time sequence for each inaccurate coverage range, and determine the instantaneous change amplitude of the communication coverage range transmitted or received by the radio frequency antenna in each sub-block according to the contour line distribution density;

[0024] Obtain model parameters of the radio frequency antenna, and based on the model parameters, obtain historical signal anomaly data when the communication coverage of the radio frequency antenna produces various instantaneous change amplitudes compared with the ideal communication coverage in the big data;

[0025] Constructing a Bayesian inference network, training the Bayesian inference network through the historical signal abnormal data, outputting a transient prior distribution and a probability likelihood function, and calculating a number of actual signal abnormal data one by one in combination with the transient prior distribution and the probability likelihood function to obtain a transient posterior distribution;

[0026] According to the transient posterior distribution, the probability value of the instantaneous change amplitude of the communication coverage in each sub-block leading to the generation of actual signal abnormal data is inferred in the Bayesian network, and only the sub-blocks with probability values ​​greater than the preset probability value are marked as suspicious coverage areas.

[0027] More specifically, the step S106 includes the following steps:

[0028] The suspicious coverage area pattern map is extracted through the global two-dimensional contour map, and the contour line spacing variable of each suspicious coverage area in the global two-dimensional contour map is obtained, and the transient steepness of each suspicious coverage area is calculated and determined according to the contour line spacing variable;

[0029] Constructing a peak space domain on the suspicious coverage area pattern map, and constructing a peak space model of each suspicious coverage area in the peak space domain based on the steepness of each transient change, so as to obtain a peak point of the peak space model corresponding to each suspicious coverage area, which is defined as a first peak domain point;

[0030] By connecting each first peak domain point in the peak space domain, all the peak domain points are connected to form a closed domain plane, which is calibrated as the first domain plane; constructing a peak space model when each suspicious coverage area reaches the accurate communication coverage area, at this time, obtaining the second peak domain point and connecting it to form a closed domain plane, which is calibrated as the second domain plane;

[0031] Planning the spatial coordinate system of the peak space domain, extracting the domain coordinate interval between the first domain plane and the second domain plane, and obtaining the domain spatial coordinate set contained in the domain coordinate interval according to the spatial coordinate system;

[0032] Based on the big data network, the peak spatial coordinates of the communication coverage range of the radio frequency antenna when transmitting electromagnetic wave signals are obtained, which are defined as the transmitting peak spatial coordinates; and the peak spatial coordinates of the communication coverage range of the radio frequency antenna when receiving electromagnetic wave signals are obtained, which are defined as the receiving peak spatial coordinates;

[0033] If there are a preset number of emission peak spatial coordinates in the domain spatial coordinate set, the suspicious coverage area is marked as a type of communication coverage extension anomaly;

[0034] If there are a preset number of receiving peak spatial coordinates flashing in the domain spatial coordinate set, the suspicious coverage area is marked as a Class II communication coverage extension anomaly.

[0035] More specifically, the step S108 includes the following steps:

[0036] When a type of coverage extension anomaly exists during the RF antenna communication process, the resident coverage color domain corresponding to the inaccurate coverage range is obtained. For the coverage color domain that is not covered by the specified coverage color domain, it is defined as an incomplete coverage color domain;

[0037] Constructing a signal frequency space framework, defining the coverage range that is not covered by the specified communication coverage range according to the incomplete coverage color domain description, marking it as an incomplete coverage range, and obtaining the range area value of the incomplete coverage range;

[0038] Based on the model parameters of the RF antenna, an ideal power spectrum required for the RF antenna to generate a specified communication coverage range in a target communication coverage area is obtained from a big data network, and several historical signal power distribution data for the RF antenna to generate the ideal power spectrum are obtained;

[0039] Fitting and calculating the several historical signal power distribution data in the signal frequency space to generate an ideal power spectrum density, extracting the power spectrum subdensity corresponding to the incomplete coverage range in the ideal power spectrum density, and obtaining several actual signal power distribution data when the radio frequency antenna generates an inaccurate coverage range;

[0040] Based on a number of actual signal power distribution data, an actual power spectrum density is generated in the signal frequency space, the signal frequency space is converted into a thermal model form, and the thermal value of the power spectrum density and the thermal chromaticity of the actual power spectrum density are output, which is defined as the first thermal chromaticity;

[0041] Preset a chromaticity constraint threshold according to the range area value, constrain the thermal chromaticity in the incomplete coverage range based on the thermal value of the power spectrum density until the chromaticity constraint threshold is reached, and obtain the thermal chromaticity of the incomplete coverage range, which is defined as the second thermal chromaticity;

[0042] Calculate the chromaticity difference between the first thermal chromaticity and the second thermal chromaticity, determine the bandwidth deviation value required for the incomplete coverage range to achieve the ideal power spectrum based on the chromaticity difference, and reconfigure the communication transmission bandwidth of the RF antenna based on the bandwidth deviation value to expand the communication transmission coverage range of the RF antenna.

[0043] More specifically, the step S110 includes the following steps:

[0044] When there is a Class II coverage extension anomaly during the RF antenna communication process, a number of historical reception signal data received and effectively mediated by the RF antenna when generating the specified coverage range in the target communication coverage area is obtained based on the big data network;

[0045] Introducing a fast Fourier transform algorithm to extract strength features of the plurality of historical received signal data, obtaining a specified signal strength spectrum diagram, presetting a minimum signal strength threshold, obtaining a signal strength spectrum curve at the minimum signal strength threshold in the specified signal strength spectrum diagram, and marking it as an ideal signal strength spectrum curve;

[0046] The ideal signal strength spectrum curve is converted into a curve difference equation of the ideal signal strength spectrum by a difference method, and the curve difference equation is solved to obtain an ideal difference equation solution;

[0047] constructing an actual signal strength spectrum curve based on a number of historical received signal data received and effectively mediated when the radio frequency antenna generates a non-standard coverage range in the target communication coverage area, solving a curve differential equation of the actual signal strength spectrum curve, and obtaining a solution to the actual differential equation;

[0048] The difference between the actual differential equation solution and the ideal differential equation solution is calculated, and the communication receiving sensitivity of the radio frequency antenna is adjusted according to the difference between the actual differential equation solution to expand the communication receiving coverage of the radio frequency antenna.

[0049] A second aspect of the present invention provides a communication coverage extension device for a radio frequency antenna, the communication coverage extension device comprising a memory and a processor, the memory storing a communication coverage extension method program for the radio frequency antenna, and when the communication coverage extension method program is executed by the processor, any one of the steps of the communication coverage extension method is implemented.

[0050] The present invention solves the technical defects existing in the background technology, and the beneficial technical effects of the present invention are:

[0051] Obtain the transient steepness of the contour lines in each suspicious coverage area, construct a peak space field on the suspicious coverage area pattern map, plan and generate a first field plane and a second field plane in the peak space field based on the transient steepness, and obtain a type of communication coverage extension anomaly and a type of communication coverage extension anomaly by analyzing the spatial coordinates between the first field plane and the second field plane; when a type of coverage extension anomaly exists in the communication process of the radio frequency antenna, obtain the incomplete coverage range missing in the inaccurate coverage range, calculate the required bandwidth when the incomplete coverage range reaches the power spectrum density of the specified coverage range, so as to reconfigure the communication transmission bandwidth to expand the communication transmission coverage range of the radio frequency antenna; when a type of coverage extension anomaly exists in the communication process of the radio frequency antenna, solve the curve differential equation of the ideal signal strength spectrum and the actual signal strength spectrum, calculate the difference between the ideal differential equation solution and the actual differential equation solution, and adjust the communication reception sensitivity to expand the communication reception coverage range of the radio frequency antenna. The present invention can optimize and adjust the situation where the communication coverage range of the radio frequency antenna does not meet the specified range when transmitting and receiving electromagnetic wave signals, so as to reasonably expand the communication coverage range of the radio frequency antenna when sending and receiving signals and ensure the communication quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, drawings of other embodiments can be obtained based on these drawings without paying creative work.

[0053] Figure 1 The process of a method for extending the communication coverage of a radio frequency antenna is shown Figure 1 ;

[0054] Figure 2 The process of a method for extending the communication coverage of a radio frequency antenna is shown Figure 2 ;

[0055] Figure 3 A device structure diagram of a communication coverage extension device of a radio frequency antenna is shown. DETAILED DESCRIPTION

[0056] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0057] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0058] A first aspect of the present invention provides a method for extending communication coverage of a radio frequency antenna, such as Figure 1 As shown, the following steps are included:

[0059] S102: constructing a dynamic communication coverage model when the radio frequency antenna transmits and receives signals in the target communication coverage area, obtaining the resident communication coverage through the dynamic communication coverage model, analyzing and determining the resident communication coverage and the specified communication coverage in the color domain, and generating a communication coverage determination result;

[0060] S104: constructing a global two-dimensional contour map of all inaccurate coverage areas based on the communication coverage determination result, obtaining the instantaneous change amplitude of the RF antenna through the contour line density of different sub-blocks in the global two-dimensional contour map, and calculating the probability of generating abnormal data of actual signals due to the change of communication coverage areas in different areas by using the instantaneous change amplitude, so as to obtain suspicious coverage areas;

[0061] S106: Obtain the transient steepness of the contour lines in each suspicious coverage area, construct a peak space field on the suspicious coverage area pattern map, plan and generate a first field plane and a second field plane in the peak space field based on the transient steepness, and obtain a first type of communication coverage extension anomaly and a second type of communication coverage extension anomaly by analyzing the spatial coordinates between the first field plane and the second field plane;

[0062] S108: When a type of coverage extension anomaly exists during the communication process of the radio frequency antenna, the incomplete coverage range missing from the inaccurate coverage range is obtained, and the required bandwidth when the incomplete coverage range reaches the power spectrum density of the specified coverage range is calculated, so as to reconfigure the communication transmission bandwidth to expand the communication transmission coverage range of the radio frequency antenna;

[0063] S110: When there is a type II coverage extension anomaly during the RF antenna communication process, the communication reception sensitivity is adjusted by solving the curve differential equation of the ideal signal strength spectrum and the actual signal strength spectrum, and calculating the difference between the ideal differential equation solution and the actual differential equation solution to expand the communication reception coverage of the RF antenna.

[0064] More specifically, the step S102 is as follows: Figure 2 As shown, the specific steps include:

[0065] S202: Acquire a communication log of the radio frequency antenna and a target communication coverage area, and acquire a plurality of multi-dimensional communication parameters transmitted and received by the radio frequency antenna in the target communication coverage area in a preset continuous time sequence through the communication log;

[0066] S204: performing dynamic least squares calculation and analysis on the plurality of multi-dimensional communication parameters by a recursive least squares method to obtain a dynamic communication coverage range model of the radio frequency antenna in the target communication coverage area on a preset continuous time sequence;

[0067] S206: construct a virtual coverage color boundary of the target communication coverage area, obtain a timing node where the RF antenna generates a number of actual signal abnormal data within a preset continuous time sequence and a RF communication task requirement, and extract a specified communication coverage range of the target communication coverage area according to the RF communication task requirement;

[0068] S208: Identify and query the specified communication coverage range through the virtual coverage color domain to obtain the virtual coverage color domain corresponding to the specified communication coverage range, which is defined as the specified coverage color domain, and extract the communication coverage range on the timing node corresponding to each actual signal abnormal data generated in the dynamic communication coverage model, which is defined as the resident communication coverage range;

[0069] S210: identifying and querying the color interval expression of the resident communication coverage range in the virtual coverage color domain, obtaining the virtual coverage color domain of the resident communication coverage range, and defining it as the resident coverage color domain;

[0070] S212: Determine whether the resident coverage color domain completely covers all virtual coverage color values ​​in the specified coverage color domain. If it is completely covered, mark the resident communication coverage range as an accurate coverage range; if it is not completely covered, mark the resident communication coverage range as an inaccurate coverage range; generate a communication coverage determination result.

[0071] It should be noted that the multi-dimensional communication parameters include communication signal frequency, antenna gain, channel bandwidth, transmission power and receiving sensitivity. In the process of transmitting or receiving electromagnetic wave signals by the RF antenna, the corresponding communication coverage range of the RF antenna may be reduced due to improper configuration of certain parameters or other factors, thereby deviating from the communication requirements of the specified coverage range. Therefore, before expanding the analysis of the communication coverage range of the RF antenna, it is necessary to determine the actual communication coverage range that does not meet the specified coverage range due to abnormal communication reduction during the transmission or reception process. However, the existing RF antenna communication analysis technology has low positioning sensitivity for the communication coverage range that is reduced under abnormal control, and it is difficult to accurately link and analyze the abnormal changes in the actual communication coverage range based on the generated signal abnormality data, and it still needs to rely on human intervention and calculation interpretation, which makes it difficult to quickly determine whether the actual communication coverage range of the corresponding transmission or reception signal of the RF antenna is reduced and does not meet the specified coverage range while generating signal abnormality data. Therefore, this method first constructs a dynamic model that describes the time-series changes of the actual communication coverage range when the RF antenna transmits and receives electromagnetic wave signals in the target communication coverage area, and obtains the actual communication coverage range that may have reduced anomalies according to the corresponding stripping of the actual signal anomaly data, that is, the resident communication coverage range, so as to achieve preliminary linkage with the signal anomaly data to screen the actual communication coverage range that may be abnormal, and improve the reliability of subsequent communication coverage range expansion data analysis; then, by constructing a virtual coverage color domain, it provides a basis for determining whether the resident communication coverage range has incomplete coverage compared to the specified communication coverage range, wherein the coverage color domain is the communication coverage range itself, and the virtual coverage color value is the range size of the communication coverage range.

[0072] It should be noted that if the resident coverage color domain has completely covered all virtual coverage color values ​​in the specified coverage color domain, it means that the resident communication coverage range does not change less than the specified communication coverage range when transmitting or receiving abnormal electromagnetic wave signal data, and still accurately meets the communication requirements, so it is an accurate coverage range; if it is not completely covered, it means that the resident communication coverage range changes less than the specified communication coverage range, and at this time it cannot meet the communication requirements, so it is an inaccurate coverage range. Replacing the determination and comparison method between the resident communication coverage range and the specified communication coverage range in the traditional analysis technology with a query form can improve the determination and analysis efficiency of abnormal changes in the communication coverage range, reduce the determination error caused by human intervention, and provide a stable and reliable analysis basis for the subsequent reasonable expansion of the communication coverage range.

[0073] More specifically, the step S104 includes the following steps:

[0074] Based on the communication coverage determination result, all inaccurate coverage ranges of the radio frequency antenna in a continuous time sequence are acquired, and the coverage altitude boundary point of each inaccurate coverage range is simultaneously preset;

[0075] The spatial coverage height value of each inaccurate coverage range and the altitude value at each corresponding coverage altitude boundary point are obtained through the resident communication coverage range dynamic model;

[0076] Construct a two-dimensional contour map, map the spatial coverage height value of each inaccurate coverage range and the altitude value at each corresponding coverage altitude boundary point to the two-dimensional contour map for fitting in the dynamic resident communication coverage range, and generate a global two-dimensional contour map of all inaccurate coverage ranges;

[0077] Acquire a predetermined radio frequency control strategy of the radio frequency antenna at different distances in the target communication coverage area at a preset time sequence, and divide the global two-dimensional contour map into N sub-blocks based on the predetermined radio frequency control strategy;

[0078] Acquire the contour line distribution density formed in each sub-block at a preset time sequence for each inaccurate coverage range, and determine the instantaneous change amplitude of the communication coverage range transmitted or received by the radio frequency antenna in each sub-block according to the contour line distribution density;

[0079] Obtain model parameters of the radio frequency antenna, and based on the model parameters, obtain historical signal anomaly data when the communication coverage of the radio frequency antenna produces various instantaneous change amplitudes compared with the ideal communication coverage in the big data;

[0080] Constructing a Bayesian inference network, training the Bayesian inference network through the historical signal abnormal data, outputting a transient prior distribution and a probability likelihood function, and calculating a number of actual signal abnormal data one by one in combination with the transient prior distribution and the probability likelihood function to obtain a transient posterior distribution;

[0081] According to the transient posterior distribution, the probability value of the instantaneous change amplitude of the communication coverage in each sub-block leading to the generation of actual signal abnormal data is inferred in the Bayesian network, and only the sub-blocks with probability values ​​greater than the preset probability value are marked as suspicious coverage areas.

[0082] It should be noted that since the inaccurate coverage range has temporal variability, and the generation of each actual abnormal signal data may be caused by improper parameter configuration or other factors when the RF antenna transmits and receives electromagnetic wave signals, causing the inaccurate coverage range to undergo local instantaneous changes in space. Therefore, each actual abnormal signal data generated can be used to trace whether the inaccurate coverage range has undergone local instantaneous changes. However, the existing RF antenna technology has low accuracy in capturing instantaneous variables of the communication coverage range under temporal changes, making it difficult to accurately calculate and trace the range changes of the inaccurate coverage range based on the existing abnormal signal data, reducing the accuracy of tracing the instantaneous changes in the inaccurate coverage range. In this regard, this method describes the potential temporal change characteristic relationship between each inaccurate coverage range by constructing a contour map, where the contour line distribution density can express the degree of instantaneous change in different local areas in the inaccurate coverage range. The denser the contour line distribution, the more drastic the instantaneous change amplitude of the area. However, the instantaneous change amplitude varies in high and low levels, so it cannot be used as a basis for determining whether the change in the communication coverage of the local area is the cause of the generation of abnormal signal data. Therefore, a Bayesian inference network can be further trained through the historical signal anomaly number. The transient prior distribution, probability likelihood function and transient posterior distribution of the Bayesian inference network are used to jointly calculate and infer the probability value of the instantaneous change amplitude of the communication coverage of each local area leading to the generation of actual signal abnormal data. If the probability value is greater than the preset probability value, it means that the local area corresponding to the sub-block in the inaccurate coverage range is a suspicious area that generates abnormal signal data, so it is marked as a suspicious coverage area. This method can be used to trace the source of the local area that causes the generation of abnormal signal data in the determined inaccurate coverage range, so that the communication coverage area required to be expanded by the subsequent RF antenna can be more accurately located, reduce the expansion error, and improve the expansion accuracy and reliability of the RF antenna communication coverage.

[0083] More specifically, the step S106 includes the following steps:

[0084] The suspicious coverage area pattern map is extracted through the global two-dimensional contour map, and the contour line spacing variable of each suspicious coverage area in the global two-dimensional contour map is obtained, and the transient steepness of each suspicious coverage area is calculated and determined according to the contour line spacing variable;

[0085] Constructing a peak space domain on the suspicious coverage area pattern map, and constructing a peak space model of each suspicious coverage area in the peak space domain based on the steepness of each transient change, so as to obtain a peak point of the peak space model corresponding to each suspicious coverage area, which is defined as a first peak domain point;

[0086] By connecting each first peak domain point in the peak space domain, all the peak domain points are connected to form a closed domain plane, which is calibrated as the first domain plane; constructing a peak space model when each suspicious coverage area reaches the accurate communication coverage area, at this time, obtaining the second peak domain point and connecting it to form a closed domain plane, which is calibrated as the second domain plane;

[0087] Planning the spatial coordinate system of the peak space domain, extracting the domain coordinate interval between the first domain plane and the second domain plane, and obtaining the domain spatial coordinate set contained in the domain coordinate interval according to the spatial coordinate system;

[0088] Based on the big data network, the peak spatial coordinates of the communication coverage range of the radio frequency antenna when transmitting electromagnetic wave signals are obtained, which are defined as the transmitting peak spatial coordinates; and the peak spatial coordinates of the communication coverage range of the radio frequency antenna when receiving electromagnetic wave signals are obtained, which are defined as the receiving peak spatial coordinates;

[0089] If there are a preset number of emission peak spatial coordinates in the domain spatial coordinate set, the suspicious coverage area is marked as a type of communication coverage extension anomaly;

[0090] If there are a preset number of receiving peak spatial coordinates flashing in the domain spatial coordinate set, the suspicious coverage area is marked as a Class II communication coverage extension anomaly.

[0091] It should be noted that one of the reasons for the instantaneous change phenomenon in the local area of ​​the communication coverage may be that the sending control mode is wrong when transmitting electromagnetic wave signals, resulting in a reduction in range, or it may be that the receiving control mode is wrong when receiving electromagnetic wave signals, resulting in a reduction in range. Therefore, this method constructs a peak space model for the instantaneous change of each suspicious coverage area by using the transient steepness expressed by the contour line spacing of the suspicious coverage area in the contour map, so as to visualize the model description and display the temporal instantaneous change trend of the suspicious coverage area. When the instantaneous change of the communication coverage of the suspicious coverage area deviates from the specified range, the peak model will rise or fall, so that the domain plane formed by the peak points on each peak model has an ascending or descending domain interval, just like a standard column supporting a plane breaks and falls due to some factors, causing the plane to become tilted, and an interval is formed between the originally horizontal plane and the inclined plane, which is the above-mentioned domain coordinate interval. The domain coordinate interval is a behavioral manifestation of the range reduction caused by the control mode error of the RF antenna when transmitting or receiving electromagnetic wave signals, which can more accurately analyze the cause of communication coverage error; if there are a preset number of transmission peak spatial coordinates in the domain space coordinate concentration, it means that the instantaneous change of the suspicious coverage area is caused by the transmission control mode error of the RF antenna in the process of transmitting electromagnetic wave signals, such as bandwidth, antenna gain or frequency; if there are a preset number of reception peak spatial coordinates in the domain space coordinate concentration, it means that the instantaneous change of the suspicious coverage area is caused by the reception control mode error of the RF antenna in the process of receiving electromagnetic wave signals, such as reception sensitivity, antenna gain or noise. This method can be used to determine and analyze the RF antenna behavior that causes the instantaneous change trend of the suspicious coverage area, so as to improve the pertinence and accuracy of the expansion of the communication coverage of the RF antenna.

[0092] More specifically, the step S108 includes the following steps:

[0093] When a type of coverage extension anomaly exists during the RF antenna communication process, the resident coverage color domain corresponding to the inaccurate coverage range is obtained. For the coverage color domain that is not covered by the specified coverage color domain, it is defined as an incomplete coverage color domain;

[0094] Constructing a signal frequency space framework, defining the coverage range that is not covered by the specified communication coverage range according to the incomplete coverage color domain description, marking it as an incomplete coverage range, and obtaining the range area value of the incomplete coverage range;

[0095] Based on the model parameters of the RF antenna, an ideal power spectrum required for the RF antenna to generate a specified communication coverage range in a target communication coverage area is obtained from a big data network, and several historical signal power distribution data for the RF antenna to generate the ideal power spectrum are obtained;

[0096] Fitting and calculating the several historical signal power distribution data in the signal frequency space to generate an ideal power spectrum density, extracting the power spectrum subdensity corresponding to the incomplete coverage range in the ideal power spectrum density, and obtaining several actual signal power distribution data when the radio frequency antenna generates an inaccurate coverage range;

[0097] Based on a number of actual signal power distribution data, an actual power spectrum density is generated in the signal frequency space, the signal frequency space is converted into a thermal model form, and the thermal value of the power spectrum density and the thermal chromaticity of the actual power spectrum density are output, which is defined as the first thermal chromaticity;

[0098] Preset a chromaticity constraint threshold according to the range area value, constrain the thermal chromaticity in the incomplete coverage range based on the thermal value of the power spectrum density until the chromaticity constraint threshold is reached, and obtain the thermal chromaticity of the incomplete coverage range, which is defined as the second thermal chromaticity;

[0099] Calculate the chromaticity difference between the first thermal chromaticity and the second thermal chromaticity, determine the bandwidth deviation value required for the incomplete coverage range to achieve the ideal power spectrum based on the chromaticity difference, and reconfigure the communication transmission bandwidth of the RF antenna based on the bandwidth deviation value to expand the communication transmission coverage range of the RF antenna.

[0100] It should be noted that when a type of coverage extension anomaly exists during the RF antenna communication process, it may be due to the bandwidth error of the RF antenna, which causes an instantaneous change in the communication coverage when transmitting electromagnetic wave signals. The power spectrum density reflects the power distribution of the signal in the frequency space, which usually affects the bandwidth and interference characteristics of the signal. Therefore, this method obtains the coverage range that deviates from the specified coverage range for the inaccurate coverage range, that is, the incomplete coverage range, and then further calculates the power spectrum density required for the incomplete coverage range. Then, the power spectrum density is fitted to the incomplete coverage range by using the thermal constraint planning method. At this time, a chromaticity value will be generated, and the chromaticity value can represent the bandwidth parameter required to finally reach the power spectrum density. Finally, the bandwidth parameter obtained by the constraint planning is calculated. The bandwidth parameter expressed under the thermal chromaticity of the actual power spectrum density is calculated for deviation. The bandwidth deviation value is the communication transmission bandwidth that needs to be adjusted to expand the communication transmission coverage range of the RF antenna. This method can calculate and configure the required bandwidth for the communication transmission coverage of the radio frequency antenna, thereby improving the communication stability and transmission rate of the radio frequency antenna when transmitting electromagnetic wave signals, reducing the fluctuation of the communication coverage during the transmission process, and having high reliability.

[0101] More specifically, the step S110 includes the following steps:

[0102] When there is a Class II coverage extension anomaly during the RF antenna communication process, a number of historical reception signal data received and effectively mediated by the RF antenna when generating the specified coverage range in the target communication coverage area is obtained based on the big data network;

[0103] Introducing a fast Fourier transform algorithm to extract strength features of the plurality of historical received signal data, obtaining a specified signal strength spectrum diagram, presetting a minimum signal strength threshold, obtaining a signal strength spectrum curve at the minimum signal strength threshold in the specified signal strength spectrum diagram, and marking it as an ideal signal strength spectrum curve;

[0104] The ideal signal strength spectrum curve is converted into a curve difference equation of the ideal signal strength spectrum by a difference method, and the curve difference equation is solved to obtain an ideal difference equation solution;

[0105] constructing an actual signal strength spectrum curve based on a number of historical received signal data received and effectively mediated when the radio frequency antenna generates a non-standard coverage range in the target communication coverage area, solving a curve differential equation of the actual signal strength spectrum curve, and obtaining a solution to the actual differential equation;

[0106] The difference between the actual differential equation solution and the ideal differential equation solution is calculated, and the communication receiving sensitivity of the radio frequency antenna is adjusted according to the difference between the actual differential equation solution to expand the communication receiving coverage of the radio frequency antenna.

[0107] It should be noted that the receiving sensitivity of the RF antenna is the minimum signal strength that the receiver can receive and effectively demodulate. The higher the sensitivity, the weaker the signal that the antenna can receive and the larger the coverage range. When there is a type of coverage extension anomaly in the RF antenna communication process, it may be due to the reduction of the receiving sensitivity during the RF antenna control process, resulting in an instantaneous change in the communication coverage when receiving electromagnetic wave signals. Therefore, the communication coverage range can be expanded accordingly by adjusting the receiving sensitivity of the RF antenna. Since the receiving sensitivity depends on the signal strength, this method extracts the signal strength characteristics of the specified communication coverage range and the signal strength characteristics of the actual communication coverage range through the fast Fourier transform algorithm to obtain a signal strength spectrum diagram. The signal strength characteristics are expressed in the spectrum curve in the signal strength spectrum diagram. Therefore, the spectrum curve part corresponding to the minimum signal strength can be converted into a curve differential equation and solved to obtain the ideal differential equation solution and the actual differential equation solution. The difference between the equation solutions is the amount of receiving sensitivity adjustment required for the current actual receiving sensitivity to reach the ideal receiving sensitivity corresponding to the specified communication coverage range, so that the communication receiving sensitivity of the RF antenna can be adjusted. This method can reasonably and accurately expand the communication reception coverage of the RF antenna, make the communication coverage of the RF antenna more stable during the process of receiving electromagnetic wave signals, and improve the communication coverage expansion performance of the RF antenna reception control.

[0108] A second aspect of the present invention provides a communication coverage extension device for a radio frequency antenna, such as Figure 3 As shown, the communication coverage extension device includes a memory 31 and a processor 32. The memory 31 stores a communication coverage extension method program of a radio frequency antenna. When the communication coverage extension method program is executed by the processor 32, any one of the communication coverage extension method steps is implemented.

[0109] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art who is familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A method for extending communication coverage of a radio frequency antenna, characterized in that: The following steps are involved: S102: constructing a dynamic communication coverage model when the radio frequency antenna transmits and receives signals in the target communication coverage area, obtaining the resident communication coverage through the dynamic communication coverage model, analyzing and determining the resident communication coverage and the specified communication coverage in the color domain, and generating a communication coverage determination result; S104: constructing a global two-dimensional contour map of all inaccurate coverage areas based on the communication coverage determination result, obtaining the instantaneous change amplitude of the RF antenna through the contour line density of different sub-blocks in the global two-dimensional contour map, and calculating the probability of generating abnormal data of actual signals due to the change of communication coverage areas in different areas by using the instantaneous change amplitude, so as to obtain suspicious coverage areas; S106: Obtain the transient steepness of the contour lines in each suspicious coverage area, construct a peak space field on the suspicious coverage area pattern map, plan and generate a first field plane and a second field plane in the peak space field based on the transient steepness, and obtain a first type of communication coverage extension anomaly and a second type of communication coverage extension anomaly by analyzing the spatial coordinates between the first field plane and the second field plane; S108: When a type of coverage extension anomaly exists during the communication process of the radio frequency antenna, the incomplete coverage range missing from the inaccurate coverage range is obtained, and the required bandwidth when the incomplete coverage range reaches the power spectrum density of the specified coverage range is calculated, so as to reconfigure the communication transmission bandwidth to expand the communication transmission coverage range of the radio frequency antenna; S110: When there is a type II coverage extension anomaly during the RF antenna communication process, the communication reception sensitivity is adjusted by solving the curve differential equation of the ideal signal strength spectrum and the actual signal strength spectrum, and calculating the difference between the ideal differential equation solution and the actual differential equation solution to expand the communication reception coverage of the RF antenna.

2. The method for extending the communication coverage of a radio frequency antenna according to claim 1, characterized in that: The step S102 specifically includes the following steps: Acquire a communication log of the radio frequency antenna and a target communication coverage area, and acquire a plurality of multi-dimensional communication parameters transmitted and received by the radio frequency antenna in the target communication coverage area in a preset continuous time sequence through the communication log; Performing dynamic least squares calculation and analysis on the plurality of multi-dimensional communication parameters by recursive least squares method, to obtain a dynamic communication coverage range model of the radio frequency antenna in the target communication coverage area on a preset continuous time sequence; Construct a virtual coverage color boundary of the target communication coverage area, obtain the timing nodes where the RF antenna generates a number of actual signal abnormal data within a preset continuous time sequence and the RF communication task requirements, and extract the specified communication coverage range of the target communication coverage area according to the RF communication task requirements; The prescribed communication coverage range is identified and queried through a virtual coverage color domain to obtain a virtual coverage color domain corresponding to the prescribed communication coverage range, which is defined as the prescribed coverage color domain, and the communication coverage range on the timing node corresponding to each actual signal abnormal data is stripped out in the dynamic communication coverage model, which is defined as the resident communication coverage range; Identify and query the color interval expression of the resident communication coverage range in the virtual coverage color domain, and obtain the virtual coverage color domain of the resident communication coverage range, which is defined as the resident coverage color domain; Determine whether the resident coverage color domain completely covers all virtual coverage color values ​​in the specified coverage color domain. If it is completely covered, mark the resident communication coverage range as an accurate coverage range; if it is not completely covered, mark the resident communication coverage range as an inaccurate coverage range, and generate a communication coverage determination result.

3. The method for extending communication coverage of a radio frequency antenna according to claim 1, characterized in that: The step S104 specifically includes the following steps: Based on the communication coverage determination result, all inaccurate coverage ranges of the radio frequency antenna in a continuous time sequence are acquired, and the coverage altitude boundary point of each inaccurate coverage range is simultaneously preset; The spatial coverage height value of each inaccurate coverage range and the altitude value at each corresponding coverage altitude boundary point are obtained through the resident communication coverage range dynamic model; Construct a two-dimensional contour map, map the spatial coverage height value of each inaccurate coverage range and the altitude value at each corresponding coverage altitude boundary point to the two-dimensional contour map for fitting in the dynamic resident communication coverage range, and generate a global two-dimensional contour map of all inaccurate coverage ranges; Acquire a predetermined radio frequency control strategy of the radio frequency antenna at different distances in the target communication coverage area at a preset time sequence, and divide the global two-dimensional contour map into N sub-blocks based on the predetermined radio frequency control strategy; Acquire the contour line distribution density formed in each sub-block at a preset time sequence for each inaccurate coverage range, and determine the instantaneous change amplitude of the communication coverage range transmitted or received by the radio frequency antenna in each sub-block according to the contour line distribution density; Obtain model parameters of the radio frequency antenna, and based on the model parameters, obtain historical signal anomaly data when the communication coverage of the radio frequency antenna produces various instantaneous change amplitudes compared with the ideal communication coverage in the big data; Constructing a Bayesian inference network, training the Bayesian inference network through the historical signal abnormal data, outputting a transient prior distribution and a probability likelihood function, and calculating a number of actual signal abnormal data one by one in combination with the transient prior distribution and the probability likelihood function to obtain a transient posterior distribution; According to the transient posterior distribution, the probability value of the instantaneous change amplitude of the communication coverage in each sub-block leading to the generation of actual signal abnormal data is inferred in the Bayesian network, and only the sub-blocks with probability values ​​greater than the preset probability value are marked as suspicious coverage areas.

4. The method for extending communication coverage of a radio frequency antenna according to claim 1, characterized in that: The step S106 specifically includes the following steps: The suspicious coverage area pattern map is extracted through the global two-dimensional contour map, and the contour line spacing variable of each suspicious coverage area in the global two-dimensional contour map is obtained, and the transient steepness of each suspicious coverage area is calculated and determined according to the contour line spacing variable; Constructing a peak space domain on the suspicious coverage area pattern map, and constructing a peak space model of each suspicious coverage area in the peak space domain based on the steepness of each transient change, so as to obtain a peak point of the peak space model corresponding to each suspicious coverage area, which is defined as a first peak domain point; By connecting each first peak domain point in the peak space domain, all the peak domain points are connected to form a closed domain plane, which is calibrated as the first domain plane; constructing a peak space model when each suspicious coverage area reaches the accurate communication coverage area, at this time, obtaining the second peak domain point and connecting it to form a closed domain plane, which is calibrated as the second domain plane; Planning the spatial coordinate system of the peak space domain, extracting the domain coordinate interval between the first domain plane and the second domain plane, and obtaining the domain spatial coordinate set contained in the domain coordinate interval according to the spatial coordinate system; Based on the big data network, the peak spatial coordinates of the communication coverage range of the radio frequency antenna when transmitting electromagnetic wave signals are obtained, which are defined as the transmitting peak spatial coordinates; and the peak spatial coordinates of the communication coverage range of the radio frequency antenna when receiving electromagnetic wave signals are obtained, which are defined as the receiving peak spatial coordinates; If there are a preset number of emission peak spatial coordinates in the domain spatial coordinate set, the suspicious coverage area is marked as a type of communication coverage extension anomaly; If there are a preset number of receiving peak spatial coordinates flashing in the domain spatial coordinate set, the suspicious coverage area is marked as a Class II communication coverage extension anomaly.

5. The method for extending communication coverage of a radio frequency antenna according to claim 1, characterized in that: The step S108 specifically includes the following steps: When a type of coverage extension anomaly exists during the RF antenna communication process, the resident coverage color domain corresponding to the inaccurate coverage range is obtained. For the coverage color domain that is not covered by the specified coverage color domain, it is defined as an incomplete coverage color domain; Constructing a signal frequency space framework, defining the coverage range that is not covered by the specified communication coverage range according to the incomplete coverage color domain description, marking it as an incomplete coverage range, and obtaining the range area value of the incomplete coverage range; Based on the model parameters of the RF antenna, an ideal power spectrum required for the RF antenna to generate a specified communication coverage range in a target communication coverage area is obtained from a big data network, and several historical signal power distribution data for the RF antenna to generate the ideal power spectrum are obtained; Fitting and calculating the several historical signal power distribution data in the signal frequency space to generate an ideal power spectrum density, extracting the power spectrum subdensity corresponding to the incomplete coverage range in the ideal power spectrum density, and obtaining several actual signal power distribution data when the radio frequency antenna generates an inaccurate coverage range; Based on a number of actual signal power distribution data, an actual power spectrum density is generated in the signal frequency space, the signal frequency space is converted into a thermal model form, and the thermal value of the power spectrum density and the thermal chromaticity of the actual power spectrum density are output, which is defined as the first thermal chromaticity; Preset a chromaticity constraint threshold according to the range area value, constrain the thermal chromaticity in the incomplete coverage range based on the thermal value of the power spectrum density until the chromaticity constraint threshold is reached, and obtain the thermal chromaticity of the incomplete coverage range, which is defined as the second thermal chromaticity; Calculate the chromaticity difference between the first thermal chromaticity and the second thermal chromaticity, determine the bandwidth deviation value required for the incomplete coverage range to achieve the ideal power spectrum based on the chromaticity difference, and reconfigure the communication transmission bandwidth of the RF antenna based on the bandwidth deviation value to expand the communication transmission coverage range of the RF antenna.

6. The method for extending communication coverage of a radio frequency antenna according to claim 1, characterized in that: The step S110 specifically includes the following steps: When there is a Class II coverage extension anomaly during the RF antenna communication process, a number of historical reception signal data received and effectively mediated by the RF antenna when generating the specified coverage range in the target communication coverage area is obtained based on the big data network; Introducing a fast Fourier transform algorithm to extract strength features of the plurality of historical received signal data, obtaining a specified signal strength spectrum diagram, presetting a minimum signal strength threshold, obtaining a signal strength spectrum curve at the minimum signal strength threshold in the specified signal strength spectrum diagram, and marking it as an ideal signal strength spectrum curve; The ideal signal strength spectrum curve is converted into a curve difference equation of the ideal signal strength spectrum by a difference method, and the curve difference equation is solved to obtain an ideal difference equation solution; constructing an actual signal strength spectrum curve based on a number of historical received signal data received and effectively mediated when the radio frequency antenna generates a non-standard coverage range in the target communication coverage area, solving a curve differential equation of the actual signal strength spectrum curve, and obtaining a solution to the actual differential equation; The difference between the actual differential equation solution and the ideal differential equation solution is calculated, and the communication receiving sensitivity of the radio frequency antenna is adjusted according to the difference between the actual differential equation solution to expand the communication receiving coverage of the radio frequency antenna.

7. A communication coverage extension device for a radio frequency antenna, characterized in that: The communication coverage extension device includes a memory and a processor. The memory stores a communication coverage extension method program of a radio frequency antenna. When the communication coverage extension method program is executed by the processor, the communication coverage extension method steps as described in any one of claims 1-6 are implemented.

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