Base station radio frequency unit location acquisition method, apparatus, and medium

Abstract

The application provides a base station radio frequency unit position acquisition method, device and medium, relates to the technical field of communication, and is used for solving the problem that the position information of a radio frequency unit of a base station of a baseband and radio frequency separation type is difficult to acquire in the prior art. The method comprises the following steps: acquiring minimum drive test (MDT) data and a subcarrier width of a base station radio frequency unit; acquiring a target area range where the base station radio frequency unit is located according to the MDT data and the subcarrier width; acquiring a candidate position of the base station radio frequency unit at a preset interval in the target area range; and acquiring a target position of the base station radio frequency unit from the candidate position according to the distance from a sample position of the MDT data. The application can acquire the position information of the base station radio frequency unit on the basis of a smaller error, does not need manual measurement or an external GPS device, can reduce the cost of acquiring the position information of the base station radio frequency unit, and can improve efficiency and accuracy.

Description

Technical Field

[0001] This invention relates to the field of communication technology, and in particular to a method, apparatus and computer-readable storage medium for obtaining the location of a base station radio frequency unit. Background Technology

[0002] In mobile networks, with the deployment of numerous baseband and radio frequency (RF) separated base stations, if the baseband unit and its RF unit are deployed separately, GPS and other clock modules can only obtain the location information of the baseband unit, not the RF unit. Current solutions to this problem involve manual measurement or using external GPS devices on the RF unit to remotely provide its location information to a dedicated server. The former is only suitable for implementing engineering requirements for newly built base stations; for a large number of existing base stations, on-site measurements are required, resulting in significant workload, long implementation cycles, and difficulty in achieving complete accuracy (depending on the attitude and skill level of the construction personnel). The latter requires substantial costs for purchasing and installing equipment, followed by long-term maintenance, making it another undesirable solution. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to address the above-mentioned deficiencies of the prior art by providing a method, apparatus and computer-readable storage medium for obtaining the location of a base station radio frequency unit, so as to solve the problem of difficulty in obtaining the location information of the radio frequency unit of a baseband and radio frequency separated base station in the prior art.

[0004] In a first aspect, the present invention provides a method for obtaining the location of a base station radio frequency unit, wherein...

[0005] The methods include:

[0006] Obtain the minimum drive test MDT data and subcarrier width of the base station radio frequency unit;

[0007] The target area range where the base station radio frequency unit is located is obtained based on MDT data and subcarrier width;

[0008] Candidate locations of base station radio frequency units are acquired at preset intervals within the target area;

[0009] The target location of the base station radio frequency unit is obtained from the candidate locations based on the distance to the sample locations in the MDT data.

[0010] Optionally, the minimum drive test MDT data and subcarrier width of the base station radio frequency unit are obtained, specifically including:

[0011] Obtain several logical cells corresponding to the base station radio frequency unit based on the engineering parameter table;

[0012] Obtain the Measurement Report (MR) data reported by the User Equipment (UE) in each logical cell within a preset time period;

[0013] N MDT data points are obtained based on MR data. The MDT data includes the first latitude and longitude and the timing advance (TA) value. The first latitude and longitude represents the sample location of the UE.

[0014] The subcarrier width of each logical cell is obtained based on the engineering parameter data.

[0015] Optionally, the target area range where the base station radio frequency unit is located is obtained based on MDT data and subcarrier width, specifically including:

[0016] Based on the subcarrier width and corresponding TA value, obtain the minimum and maximum 3D distances (Di and Di) between the sample location i∈(1,N) of each MDT data and the base station radio frequency unit. i,3D-min D i,3D-max );

[0017] Based on the minimum and maximum 3D distance (D i,3D-min D i,3D-max The target area range where the base station radio frequency unit is located is obtained from the first latitude and longitude.

[0018] Optionally, based on the minimum and maximum 3D distance (D i,3D-min D i,3D-max The target area range where the base station radio frequency unit is located is obtained using the first latitude and longitude coordinates, specifically including:

[0019] Consider N circles centered at the first latitude and longitude coordinates, with corresponding minimum and maximum 3D distances (D). i,3D-min D i,3D-max The intersection of circular / annular regions with a radius of ) is taken as the target area range where the base station radio frequency unit is located.

[0020] Optionally, the target location of the base station radio frequency unit is obtained from the candidate locations based on the distance to the sample locations in the MDT data, specifically including:

[0021] Obtain the second latitude and longitude of M candidate locations and the antenna height H of the base station radio frequency unit. ant ;

[0022] The estimated horizontal distance D between each candidate location j∈(1,M) and the corresponding sample location in the MDT data is obtained based on the second latitude and longitude of each candidate location and N first latitude and longitude coordinates. (i,j)_2D ;

[0023] According to the antenna hanging height H ant Estimated horizontal distance D (i,j)_2D Calculate the estimated 3D distance D between each candidate location and the corresponding sample location in the MDT data. (i,j)_3D =(D (i,j)_2D 2 +H ant2 ) 0.5 *alpha

[0024] Where alpha∈(0.5,1] is a correction factor, which is determined according to the actual coverage environment of the corresponding logical cell;

[0025] Based on the estimated 3D distance D (i,j)_3D Is it located at the minimum and maximum 3D distance (D)? i,3D-min D i,3D-max Within ) the target location of the base station radio frequency unit is obtained from the candidate locations.

[0026] Optionally, based on the estimated 3D distance D (i,j)_3D Is it located at the minimum and maximum 3D distance (D)? i,3D-min D i,3D-max Within a certain range, the target location of the base station radio frequency unit is obtained from the candidate locations, specifically including:

[0027] The N estimated 3D distances D for candidate position j are calculated according to the following formula. (i,j)_3D Located at the minimum and maximum 3D distance (D i,3D-min D i,3D-max The ratio C within ) j :

[0028] C j =countif(D i,3D-min ≤D (i,j)_3D ≤D i,3D-max ) / N

[0029] According to M C j Obtain the target location of the base station radio frequency unit from M candidate locations.

[0030] Optionally, the TA value of all N MDT data is 0;

[0031] According to M C j The target location of the base station radio frequency unit is obtained from M candidate locations, specifically including:

[0032] Select the largest C from M candidate positions. j Determine the largest C j If the value is greater than a preset threshold, select C from the M candidate positions. j The largest candidate position j is the target position of the base station radio frequency unit, and the latitude and longitude of the target position are recorded as the latitude and longitude of the base station radio frequency unit;

[0033] If the largest C jIf all values ​​are less than the preset threshold, new MDT data with the smallest TA value are obtained from the MR data, and the target region range, candidate locations, and target locations are obtained again from the new MDT data, until a C value greater than the preset threshold is obtained. j .

[0034] In a second aspect, the present invention provides a base station radio frequency unit location acquisition device, comprising:

[0035] The data module is used to acquire the minimum drive test MDT data and subcarrier width of the base station radio frequency unit;

[0036] The range module, connected to the data module, is used to obtain the target area range where the base station radio frequency unit is located based on MDT data and subcarrier width.

[0037] The candidate module, connected to the range module, is used to acquire candidate positions of base station radio frequency units at preset intervals within the target area.

[0038] The final selection module, connected to the candidate module, is used to obtain the target location of the base station radio frequency unit from the candidate locations based on the distance to the sample location of the MDT data.

[0039] Thirdly, the present invention provides a base station radio frequency unit location acquisition device, including a memory and a processor. The memory stores a computer program. When the processor runs the computer program stored in the memory, the processor executes the base station radio frequency unit location acquisition method as described above.

[0040] Fourthly, 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, it implements the base station radio frequency unit location acquisition method as described above.

[0041] This invention provides a method, apparatus, and computer-readable storage medium for obtaining the location of a base station radio frequency unit. The method determines the target area range of the base station radio frequency unit based on MDT data and subcarrier width. Within the target area, a gridding method is used to obtain candidate location points. Then, the target location of the base station radio frequency unit is calculated based on the sample locations corresponding to the candidate location points and the MDT data. This method can obtain the location information of the base station radio frequency unit with a small error, without the need for manual measurement or external GPS devices. This reduces the cost of obtaining the location information of the base station radio frequency unit while improving efficiency and accuracy. Attached Figure Description

[0042] Figure 1 This is a flowchart of a method for obtaining the location of a base station radio frequency unit according to an embodiment of the present invention;

[0043] Figure 2This is a typical antenna gain pattern in an embodiment of the present invention;

[0044] Figure 3 This is a schematic diagram of the structure of a base station radio frequency unit location acquisition device according to an embodiment of the present invention;

[0045] Figure 4 This is a schematic diagram of another base station radio frequency unit location acquisition device in an embodiment of the present invention. Detailed Implementation

[0046] To enable those skilled in the art to better understand the technical solution of the present invention, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0047] It is understood that the specific embodiments and accompanying drawings described herein are merely for explaining the invention and are not intended to limit the invention.

[0048] It is understood that, without conflict, the various embodiments and features in the embodiments of the present invention can be combined with each other.

[0049] It is understood that, for ease of description, only the parts related to the present invention are shown in the accompanying drawings, while the parts unrelated to the present invention are not shown in the drawings.

[0050] It is understood that each unit or module involved in the embodiments of the present invention may correspond to only one entity structure, or may be composed of multiple entity structures, or multiple units or modules may be integrated into one entity structure.

[0051] It is understood that, without conflict, the functions and steps marked in the flowcharts and block diagrams of this invention may occur in a different order than that marked in the accompanying drawings.

[0052] It is understood that the flowcharts and block diagrams of this invention illustrate the possible architecture, functions, and operations of systems, apparatuses, devices, and methods according to various embodiments of this invention. Each block in the flowchart or block diagram may represent a unit, module, program segment, or code, containing executable instructions for implementing the specified function. Furthermore, each block or combination of blocks in the block diagram and flowchart can be implemented using a hardware-based system to achieve the specified function, or using a combination of hardware and computer instructions.

[0053] It is understood that the units and modules involved in the embodiments of the present invention can be implemented by software or by hardware. For example, the units and modules can be located in a processor.

[0054] To facilitate understanding of this invention, the location information of the base station radio frequency unit will be introduced first.

[0055] The location information of a base station's radio frequency unit is typically represented by latitude and longitude. For non-separated base stations, the latitude and longitude information is directly obtained. This information can be collected manually during the installation and construction phase or the operation and maintenance optimization phase, or it can be calculated based on the base station's GPS (Global Positioning System) clock module and obtained through the network management system. The latter method allows for automatic collection and calibration, making it more reliable and widely used. Its applications include asset operation and maintenance management for operators, intelligent optimization algorithms, and providing location-based services to users. Base station information is usually recorded in the base station operating parameter table maintained by the operator, as shown in Table 1. This table records the base station name / number, base station latitude and longitude, cell name / number, antenna height / azimuth angle / downtilt angle, etc. Traditional engineering parameter tables generally do not list the latitude and longitude information of each cell separately, but directly use the latitude and longitude of the base station. However, the latitude and longitude of the base station is actually the location of the base station baseband unit. If the latitude and longitude of the base station is obtained from the GPS module, the GPS and other clock modules are usually installed in the base station baseband unit (such as the BBU of a 4G base station, and the BBU or DU of a 5G base station). In this case, the latitude and longitude of the base station refers to the actual installation location of the GPS antenna. This assumes that the radio frequency unit, antenna, baseband unit, etc. of each cell of the base station are very close to the location of the GPS antenna.

[0056] Table 1. Examples of Base Station Operating Parameters

[0057]

[0058] With the deployment of numerous baseband and radio frequency (RF) separated base stations, including the separation of BBU (Base Band Unit) / RRU (Remote Radio Unit) in 4G (Fourth Generation Mobile Phone Communication Technology) base stations, and the separation of BBU / RRU or CU (Centralized Unit) / DU (Distributed Unit) / AAU (Active Antenna Unit) in 5G (Fifth Generation Mobile Phone Communication Technology) base stations, the latitude and longitude of the base stations obtained above obviously cannot accurately represent the location of the RF units. However, to meet the needs of intelligent network operation analysis and location-based services, more accurate information on the latitude and longitude of the RF units in each cell is required.

[0059] In view of this, the base station radio frequency unit location acquisition method, apparatus and computer-readable storage medium provided by the present invention are specifically as described in Embodiments 1-4.

[0060] Example 1:

[0061] like Figure 1 As shown, Embodiment 1 of the present invention provides a method for obtaining the location of a base station radio frequency unit, the method comprising:

[0062] S01. Obtain the minimum drive test MDT data and subcarrier width of the base station radio frequency unit;

[0063] S02. Obtain the target area range where the base station radio frequency unit is located based on the MDT data and subcarrier width;

[0064] S03. Obtain candidate locations of base station radio frequency units within the target area at preset intervals;

[0065] S04. Obtain the target location of the base station radio frequency unit from the candidate locations based on the distance to the sample location of the MDT data.

[0066] Specifically, in this embodiment, the method for obtaining the location of the base station radio frequency unit determines the target area range of the base station radio frequency unit based on MDT data and subcarrier width, obtains candidate location points within the target area using a gridding method, and then calculates the target location of the base station radio frequency unit based on the sample locations corresponding to the candidate location points and MDT data. This method can obtain the location information of the base station radio frequency unit with a small error, without the need for manual measurement or external GPS devices, thereby reducing the cost of obtaining the location information of the base station radio frequency unit and improving efficiency and accuracy.

[0067] Optionally, the minimum drive test MDT data and subcarrier width of the base station radio frequency unit are obtained, specifically including:

[0068] Obtain several logical cells corresponding to the base station radio frequency unit based on the engineering parameter table;

[0069] Obtain the Measurement Report (MR) data reported by the User Equipment (UE) in each logical cell within a preset time period;

[0070] N MDT data points are obtained based on MR data. The MDT data includes the first latitude and longitude and the timing advance (TA) value. The first latitude and longitude represents the sample location of the UE.

[0071] The subcarrier width of each logical cell is obtained based on the engineering parameter data.

[0072] Specifically, in this embodiment, the method first looks up the ID (Identity Document) of the logical cell corresponding to the radio frequency unit of the base station to be evaluated based on the engineering parameter table. For radio frequency units corresponding to multiple logical cells, such as when the same radio frequency unit is configured with multiple carriers to form multiple logical cells, the IDs of all these logical cells are found. It should be noted that this invention can be applied to the case where one radio frequency unit corresponds to one or more logical cells, but not to the case where multiple radio frequency unit cells are merged into one logical cell, because in this case, multiple radio frequency units are placed separately and will correspond to multiple different latitude and longitude locations. Based on the obtained cell ID, the MDT (Minimization Drive Test) data of this or these logical cells for a period of time is filtered out from the mobile network MR (Measurement Report) data. The MR data is reported by multiple UEs (User Equipment) within the logical cell, including the latitude and longitude information of the UE's location, the TA (Timing Advance) value, and the RSRP (Reference Signal Received). Information such as power (reference signal received power) is included, where the TA value indicates the delay in signal transmission in space. If a mobile station moves away from the base station during a call, the signal from the base station will arrive at the mobile station "later and later." Simultaneously, the mobile station's signal will also arrive at the base station "later and later." Excessive delay can cause the base station to receive signals from a particular mobile station in the same time slot that overlap with the time slot of another mobile station's signal received by the base station, causing inter-symbol interference (ISI). Therefore, during a call, the measurement report header sent by the mobile station to the base station includes the measured delay value. The base station must monitor the call arrival time and send instructions to the mobile station on the downlink channel at a frequency of once every 480ms, instructing the mobile station to... The transmission time is called the TA (Target Aspect). From all MDT (Multi-Level Data) data within a certain time period of this or these logical cells, MDT data with smaller TA values ​​are selected as samples for obtaining the radio frequency unit (RFU) location. These data samples themselves correspond to the location of the corresponding UE, i.e., the sample location. The location of the RF U will be deduced from these sample locations later. When selecting MDT data samples, MDT data samples with TA = 0 are preferred. If the number of such samples is too small, the range of TA values ​​can be appropriately expanded from small to large to filter the MDT data samples, for example, filtering out MDT samples with TA = 0 or 1. The filtered MDT samples are numbered sequentially as MDT1, MDT2, ..., MDT... i ,...,MDT NWhere N is the total number of MDT data samples that meet the TA condition after filtering; the reason for selecting samples with TA=0 as much as possible is that the sample points with TA are closer to the base station antenna, as shown in the attached figure. Figure 2 The typical antenna gain pattern shown has a high probability of sample points being distributed in multiple directions of the antenna in the region where TA=0, resulting in a small estimation error. The further away from the base station antenna, the greater the influence of the directional antenna gain directivity, the more samples are distributed in the same direction, and the TA value becomes more discrete due to multiple reflections on the propagation path, thus the larger the estimation error. Examples of the obtained MDT data samples are shown in Table 2.

[0073] Table 2 MDT Data Table

[0074] MDT Number longitude Dimension RSRP TA 1 xxx xxx -85 0 2 xxx xxx xxx 0 ... ... ... ... 0 i xxx xxx xxx 0 ... ... ... ... 1 N xxx xxx xxx 1

[0075] Optionally, the target area range where the base station radio frequency unit is located is obtained based on MDT data and subcarrier width, specifically including:

[0076] Based on the subcarrier width and corresponding TA value, obtain the minimum and maximum 3D distances (Di and Di) between the sample location i∈(1,N) of each MDT data and the base station radio frequency unit. i,3D-min D i,3D-max );

[0077] Based on the minimum and maximum 3D distance (D i,3D-min D i,3D-max The target area range where the base station radio frequency unit is located is obtained from the first latitude and longitude.

[0078] Specifically, in this embodiment, after obtaining the logical cell subcarrier width based on engineering parameter data, the minimum and maximum 3D distances (D) corresponding to each MDT data sample can be obtained according to the TA values ​​in Table 2 and the relationship between subcarrier width and TA values ​​given in Table 3. i,3D-min D i,3D-max The minimum and maximum 3D distances represent the possible distance range between the radio frequency unit and the UE location corresponding to each MDT data sample. The method for obtaining the minimum and maximum 3D distances is based on relevant international standards and is an existing technical means in this field.

[0079] Table 3. Distance range corresponding to TA values

[0080]

[0081]

[0082] Optionally, based on the minimum and maximum 3D distance (D i,3D-min D i,3D-max The target area range where the base station radio frequency unit is located is obtained using the first latitude and longitude coordinates, specifically including:

[0083] Consider N circles centered at the first latitude and longitude coordinates, with corresponding minimum and maximum 3D distances (D). i,3D-min D i,3D-max The intersection of circular / annular regions with a radius of ) is taken as the target area range where the base station radio frequency unit is located.

[0084] Specifically, in this embodiment, the target area is defined by default as the intersection of the minimum and maximum 3D distance ranges corresponding to all MDT data sample location points with TA=0. For example, when the subcarrier width is 15kHz, the maximum distance corresponding to TA=0 is 78 meters. A circle with 78 meters is drawn with multiple MDT data sample location points as the center, and the intersection of these circles is the target area. For scenarios where MDT data samples with TA=0 cannot be collected (e.g., scenarios where no service occurs near the base station), processing can be performed based on the MDT data sample point with the minimum TA value. Select an MDT sample point with the minimum TA value, and form an annular area with the minimum and maximum distances corresponding to that TA value as the center. Perform union processing on the annular areas corresponding to multiple MDT sample points with the same minimum TA value, and preferentially select the intersection area as the target area for subsequent radio frequency unit location estimation.

[0085] Optionally, the target location of the base station radio frequency unit is obtained from the candidate locations based on the distance to the sample locations in the MDT data, specifically including:

[0086] Obtain the second latitude and longitude of M candidate locations and the antenna height H of the base station radio frequency unit. ant ;

[0087] The estimated horizontal distance D between each candidate location j∈(1,M) and the corresponding sample location in the MDT data is obtained based on the second latitude and longitude of each candidate location and N first latitude and longitude coordinates. (i,j)_2D ;

[0088] According to the antenna hanging height H ant Estimated horizontal distance D (i,j)_2D Calculate the estimated 3D distance D between each candidate location and the corresponding sample location in the MDT data. (i,j)_3D =(D (i,j)_2D 2 +H ant 2 ) 0.5 *alpha

[0089] Where alpha∈(0.5,1] is a correction factor, which is determined according to the actual coverage environment of the corresponding logical cell;

[0090] Based on the estimated 3D distance D (i,j)_3D Is it located at the minimum and maximum 3D distance (D)? i,3D-minD i,3D-max Within ) the target location of the base station radio frequency unit is obtained from the candidate locations.

[0091] Specifically, in this embodiment, within the target area, candidate location points are selected at a certain granularity (e.g., 5-meter intervals), resulting in a total of M candidate location points. One candidate location point (numbered j) is selected, corresponding to a set of latitude, longitude, and altitude (where the altitude value is taken as the antenna mounting height H of the cell to be evaluated). ant First, calculate its relationship with each MDT. i Estimated 3D distance D of the location point (i,j)_3D Candidate location j and each MDT i Estimated 3D distance D of the location point (i,j)_3D Specifically, the calculation involves two steps: First, based on latitude and longitude, the distance from location point j to each MDT is calculated. i The horizontal distances of the samples are D (i,j)_2D Then, calculate the distance from that point to each MDT. i The 3D distances of the samples are D (i,j)_3D =(D (i,j)_2D 2 +H ant 2 ) 0.5 *alpha, where alpha is a correction factor with a default value of 1. When prior information indicates that the actual coverage environment of the relevant cell has a very rich multipath environment, such as many buildings, alpha can be set to a number in the range (0.5, 1), such as 0.7; then according to D i,3D-min ≤D (i,j)_3D ≤D i,3D-max Determine whether the candidate location point (numbered j) is a suitable target location point, and select the most suitable candidate location point from the M candidate location points as the target location point.

[0092] Optionally, based on the estimated 3D distance D (i,j)_3D Is it located at the minimum and maximum 3D distance (D)? i,3D-min D i,3D-max Within a certain range, the target location of the base station radio frequency unit is obtained from the candidate locations, specifically including:

[0093] The N estimated 3D distances D for candidate position j are calculated according to the following formula. (i,j)_3D Located at the minimum and maximum 3D distance (D i,3D-min D i,3D-max The ratio C within ) j :

[0094] C j =countif(D i,3D-min ≤D (i,j)_3D ≤D i,3D-max ) / N

[0095] According to M C j Obtain the target location of the base station radio frequency unit from M candidate locations.

[0096] Specifically, in this embodiment, the distance from each candidate location point j to each MDT is statistically analyzed. i 3D distance of data sample location points in TA i Within the corresponding distance range (D) i,3D-min D i,3D-max The ratio C within the range j =countif(D i,3D-min ≤D (i,j)_3D ≤D i,3D-max ) / N, where the COUNTIF function is a function that counts the data points in a specified dataset that meet a specified condition. After calculating all M candidate locations, the selected location satisfies D. i,3D-min ≤D (i,j)_3D ≤D i,3D-max The ratio C j The highest candidate location point is the target location point, and the corresponding latitude and longitude are determined to be the latitude and longitude of the logical cell, which is also the latitude and longitude of the radio frequency unit.

[0097] Optionally, the TA value of all N MDT data is 0;

[0098] According to M C j The target location of the base station radio frequency unit is obtained from M candidate locations, specifically including:

[0099] Select the largest C from M candidate positions. j Determine the largest C j If the value is greater than a preset threshold, select C from the M candidate positions. j The largest candidate position j is the target position of the base station radio frequency unit, and the latitude and longitude of the target position are recorded as the latitude and longitude of the base station radio frequency unit;

[0100] If the largest C j If all values ​​are less than the preset threshold, new MDT data with the smallest TA value are obtained from the MR data, and the target region range, candidate locations, and target locations are obtained again from the new MDT data, until a C value greater than the preset threshold is obtained. j .

[0101] Specifically, in this embodiment, N MDT data points with TA=0 are preferentially selected to obtain the location of the base station radio frequency unit. To determine whether these N MDT data points can obtain relatively accurate base station radio frequency location information, a target threshold (e.g., 80%) can be set. If one or more points reach the target threshold, the candidate location points that reach the target threshold are determined to have high positioning accuracy, and C is selected from them. j The latitude and longitude corresponding to the candidate location point with the highest value is the latitude and longitude of the radio frequency unit. If all candidate location points within the target area do not reach the target threshold, the target area range is appropriately expanded, that is, the MDT data sample range of TA value is expanded. That is, if the number of samples with TA=0 is too small, the range of TA values ​​can be appropriately expanded according to the TA value from small to large to obtain MDT data samples. Then, based on the expanded MDT data samples, the target area range is obtained again, candidate locations are selected again within the target area range, and target locations are selected again from the candidate locations until the latitude and longitude of the base station radio frequency unit that meets the requirements is obtained.

[0102] The base station radio frequency unit location acquisition method provided in Embodiment 1 of this invention determines the target area range of the base station radio frequency unit based on MDT data and subcarrier width. Furthermore, it delineates the target area range for searching the base station radio frequency unit based on the MDT data sample information with TA=0 or the smallest TA value, combined with the distance corresponding to the TA value, thereby maximizing computational efficiency. Within the target area, a gridded method is used to obtain candidate location points. Then, the target location of the base station radio frequency unit is calculated based on the sample positions corresponding to the candidate location points and the MDT data. The horizontal distance is estimated based on latitude and longitude, and the 3D distance is estimated based on the antenna mounting height. The target location point is then located based on the estimated 3D distance. The latitude and longitude of the radio frequency unit are estimated based on the MDT data sample information with TA=0 or the smallest TA value, minimizing errors. This method can rapidly acquire the latitude and longitude information of a large number of base station radio frequency units with minimal error, without the need for manual measurement or external GPS devices, reducing the cost of acquiring base station radio frequency unit location information while improving efficiency and accuracy. The obtained latitude and longitude information can be used for operator asset operation and maintenance management, intelligent optimization algorithms, and providing location-based services to users. It can also be used to verify obvious anomalies in the latitude and longitude information of base stations in the operating parameter table.

[0103] Example 2:

[0104] like Figure 3 As shown, Embodiment 2 of the present invention provides a base station radio frequency unit location acquisition device, comprising:

[0105] Data module 01 is used to acquire the minimum drive test MDT data and subcarrier width of the base station radio frequency unit;

[0106] Range module 02, connected to the data module 01, is used to obtain the target area range where the base station radio frequency unit is located based on MDT data and subcarrier width;

[0107] Candidate module 03, connected to range module 02, is used to acquire candidate positions of base station radio frequency units at preset intervals within the target area.

[0108] The final selection module 04, connected to the candidate module 03, is used to obtain the target location of the base station radio frequency unit from the candidate locations based on the distance to the sample location of the MDT data.

[0109] Optionally, data module 01 specifically includes:

[0110] The cell parameter unit is used to obtain several logical cells corresponding to the base station radio frequency unit according to the engineering parameter table;

[0111] The MR data unit is used to acquire the measurement report (MR) data reported by the user equipment (UE) in each logical cell within a preset time period.

[0112] MDT data unit is used to obtain N MDT data based on MR data. The MDT data includes the first latitude and longitude and the timing advance TA value. The first latitude and longitude represents the sample location where the UE is located.

[0113] The subcarrier data unit is used to obtain the subcarrier width of each logical cell based on the engineering parameter data.

[0114] Optionally, the range module 02 specifically includes:

[0115] The distance range unit is used to obtain the minimum and maximum 3D distances (Di and Dt) between the sample location i∈(1,N) of each MDT data and the base station radio frequency unit based on each subcarrier width and the corresponding TA value. i,3D-min D i,3D-max );

[0116] Target range unit, used to determine the minimum and maximum 3D distance (D i,3D-min D i,3D-max The target area range where the base station radio frequency unit is located is obtained from the first latitude and longitude.

[0117] Optionally, the target range unit is specifically used for:

[0118] Consider N circles centered at the first latitude and longitude coordinates, with corresponding minimum and maximum 3D distances (D). i,3D-min D i,3D-max The intersection of circular / annular regions with a radius of ) is taken as the target area range where the base station radio frequency unit is located.

[0119] Optionally, final selection module 04 specifically includes:

[0120] The antenna mounting height unit is used to obtain the second latitude and longitude of M candidate locations and the antenna mounting height H of the base station radio frequency unit. ant ;

[0121] The first estimation unit is used to obtain the estimated horizontal distance D between the candidate location and the sample location of the corresponding MDT data based on the second latitude and longitude of each candidate location j∈(1,M) and N first latitude and longitude. (i,j)_2D ;

[0122] The second estimation unit is used to estimate based on the antenna mounting height H. ant Estimated horizontal distance D (i,j)_2D Calculate the estimated 3D distance D between each candidate location and the corresponding sample location in the MDT data. (i,j)_3D =(D (i,j)_2D 2 +H ant 2 ) 0.5 *alpha

[0123] Where alpha∈(0.5,1] is a correction factor, which is determined according to the actual coverage environment of the corresponding logical cell;

[0124] Final selection unit, used to determine the estimated 3D distance D (i,j)_3D Is it located at the minimum and maximum 3D distance (D)? i,3D-min D i,3D-max Within ) the target location of the base station radio frequency unit is obtained from the candidate locations.

[0125] Optionally, the final selection unit specifically includes:

[0126] The ratio subunit is used to calculate N estimated 3D distances D for candidate position j according to the following formula. (i,j)_3D Located at the minimum and maximum 3D distance (D i,3D-min D i,3D-max The ratio C within ) j :

[0127] C j =countif(D i,3D-min ≤D (i,j)_3D ≤D i,3D-max ) / N

[0128] The final selection subunit is used to select M Cs. j Obtain the target location of the base station radio frequency unit from M candidate locations.

[0129] Optionally, the TA value of all N MDT data is 0;

[0130] The final selection sub-units specifically include:

[0131] The judgment sub-unit is used to select the largest C from M candidate positions. j Determine the largest C j If the value is greater than a preset threshold, select C from the M candidate positions. j The largest candidate position j is the target position of the base station radio frequency unit, and the latitude and longitude of the target position are recorded as the latitude and longitude of the base station radio frequency unit;

[0132] The loop subunit is used if the largest C j If all values ​​are less than the preset threshold, new MDT data with the smallest TA value are obtained from the MR data, and the target region range, candidate locations, and target locations are obtained again from the new MDT data, until a C value greater than the preset threshold is obtained. j .

[0133] Example 2 provides a base station radio frequency unit location acquisition device, which is a device corresponding to the method in Example 1. This device can acquire the location information of the base station radio frequency unit with a small error, without the need for manual measurement or external GPS devices.

[0134] Example 3:

[0135] like Figure 4 As shown, Embodiment 3 of the present invention provides a base station radio frequency unit location acquisition device, including a memory 10 and a processor 20. The memory 10 stores a computer program. When the processor 20 runs the computer program stored in the memory 10, the processor executes the base station radio frequency unit location acquisition method as described in Embodiment 1.

[0136] The memory 10 is connected to the processor 20. The memory 10 can be a flash memory, a read-only memory, or another type of memory. The processor 20 can be a central processing unit or a microcontroller.

[0137] Example 3 provides a computer device in which the processor 20 runs a calculation program stored in the memory 10. After the calculation program is run, it is used to obtain the location of the base station radio frequency unit. The location information of the base station radio frequency unit can be obtained with a small error, without the need for manual measurement or external GPS devices.

[0138] Example 4:

[0139] Embodiment 4 of the present invention provides a computer-readable storage medium storing a computer program thereon. When the computer program is executed by a processor, it implements the base station radio frequency unit location acquisition method as described in Embodiment 1.

[0140] The computer-readable storage medium includes volatile or non-volatile, removable or non-removable media implemented in any method or technology for storing information (such as computer-readable instructions, data structures, computer program modules, or other data). Computer-readable storage media include, but are not limited to, RAM (Random Access Memory), ROM (Read-Only Memory), EEPROM (Electrically Erasable Programmable Read-Only Memory), flash memory or other memory technologies, CD-ROM (Compact Disc Read-Only Memory), DVD or other optical disc storage, cartridges, magnetic tapes, disk storage or other magnetic storage devices, or any other medium that can be used to store desired information and is accessible to a computer.

[0141] Example 4 provides a computer-readable storage medium in which a stored calculation program, after being run, is used to obtain the location of a base station radio frequency unit. The program can obtain the location information of the base station radio frequency unit with a small error, without the need for manual measurement or external GPS devices.

[0142] Embodiments 1-4 of the present invention provide a method, apparatus, and computer-readable storage medium for obtaining the location of a base station radio frequency unit. The target area range of the base station radio frequency unit is determined based on MDT data and subcarrier width. Within the target area, a gridding method is used to obtain candidate location points. Then, the target location of the base station radio frequency unit is calculated based on the sample locations corresponding to the candidate location points and the MDT data. The location information of the base station radio frequency unit can be obtained with a small error, without the need for manual measurement or external GPS devices, which can reduce the cost of obtaining the location information of the base station radio frequency unit, while improving efficiency and accuracy.

[0143] It is understood that the above embodiments are merely exemplary implementations used to illustrate the principles of the present invention, and the present invention is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. A method for obtaining the location of a base station radio frequency unit, characterized in that, The method includes: Obtain the minimum drive test MDT data and subcarrier width of the base station radio frequency unit; The target area range where the base station radio frequency unit is located is obtained based on MDT data and subcarrier width; Within the target area, acquire M candidate locations of the base station radio frequency unit at preset intervals; The target location of the base station radio frequency unit is obtained from the candidate locations based on the distance to the sample locations in the MDT data, specifically including: Obtain the second latitude and longitude of M candidate locations and the antenna height H of the base station radio frequency unit. ant ; Based on the second latitude and longitude of each candidate location j∈(1,M) and the first latitude and longitude of the sample location i∈(1,N) representing the UE in the N MDT data, obtain the estimated horizontal distance D between the candidate location and the corresponding sample location in the MDT data. (i,j)_2D ; According to the antenna hanging height H ant Estimated horizontal distance D (i,j)_2D Calculate the estimated 3D distance D between each candidate location and the corresponding sample location in the MDT data. (i,j)_3D ; Based on the estimated 3D distance D (i,j)_3D Is it located at the minimum and maximum 3D distance (D)? i,3D-min D i,3D-max Within ) the target location of the base station radio frequency unit is obtained from the candidate locations, (D i,3D-min D i,3D-max The minimum and maximum 3D distance between the sample location of each MDT data obtained based on each subcarrier width and the corresponding TA value and the base station radio frequency unit is 3D distance.

2. The method according to claim 1, characterized in that, Obtain the minimum drive test MDT data and subcarrier width of the base station radio frequency unit, specifically including: Obtain several logical cells corresponding to the base station radio frequency unit based on the engineering parameter table; Obtain the Measurement Report (MR) data reported by the User Equipment (UE) in each logical cell within a preset time period; N MDT data points are obtained from the MR data. The MDT data includes the first latitude and longitude and the timing advance (TA) value. The subcarrier width of each logical cell is obtained based on the engineering parameter data.

3. The method according to claim 2, characterized in that, The target area range where the base station radio frequency unit is located is obtained based on MDT data and subcarrier width, specifically including: Based on the subcarrier width and corresponding TA value, obtain the minimum and maximum 3D distances (Di and Di) between the sample location i∈(1,N) of each MDT data and the base station radio frequency unit. i,3D-min D i,3D-max ); Based on the minimum and maximum 3D distance (D i,3D-min D i,3D-max The target area range where the base station radio frequency unit is located is obtained from the first latitude and longitude.

4. The method according to claim 3, characterized in that, Based on the minimum and maximum 3D distance (D i,3D-min D i,3D-max The target area range where the base station radio frequency unit is located is obtained using the first latitude and longitude coordinates, specifically including: Consider N circles centered at the first latitude and longitude coordinates, with corresponding minimum and maximum 3D distances (D). i,3D-min D i,3D-max The intersection of circular / annular regions with a radius of 1 is taken as the target area range where the base station radio frequency unit is located.

5. The method according to claim 4, characterized in that, According to the antenna hanging height H ant Estimated horizontal distance D (i,j)_2D Calculate the estimated 3D distance D between each candidate location and the corresponding sample location in the MDT data. (i,j)_3D Specifically, it includes: According to the antenna hanging height H ant Estimated horizontal distance D (i,j)_2D The formula for calculating the estimated 3D distance between each candidate location and the corresponding sample location in the MDT data is as follows: D (i,j)_3D = (D (i,j)_2D 2 +H ant 2 ) 0.5 *alpha, Where alpha∈(0.5,1] is a correction factor, which is determined according to the actual coverage environment of the corresponding logical cell.

6. The method according to claim 5, characterized in that, Based on the estimated 3D distance D (i,j)_3D Is it located at the minimum and maximum 3D distance (D)? i,3D-min D i,3D-max Within a certain range, the target location of the base station radio frequency unit is obtained from the candidate locations, specifically including: The estimated 3D distance D for each candidate position j is calculated using the following formula. (i,j)_3D Located at the minimum and maximum 3D distance (D i,3D-min D i,3D-max The ratio C within ) j : C j =countif(D i,3D-min ≤D （i,j）_3D ≤D i,3D-max ) / N According to C j The target location of the base station radio frequency unit is obtained from the candidate locations. The COUNTIF function is a function that counts the data that meets the specified conditions in the specified data.

7. The method according to claim 6, characterized in that, The TA value of all N MDT data is 0; According to C j Obtaining the target location of the base station radio frequency unit from the candidate locations specifically includes: Determine M C j Does C have a value greater than a preset threshold? j If so, select C from the M candidate positions. j The target location of the base station radio frequency unit with the largest candidate location j is recorded as the latitude and longitude of the base station radio frequency unit. If we judge M C j If all values ​​are less than the preset threshold, new MDT data with the smallest TA value are obtained from the MR data, and the target region range, candidate locations, and target locations are obtained again from the new MDT data, until a C value greater than the preset threshold is obtained. j .

8. A base station radio frequency unit location acquisition device, characterized in that, include: The data module is used to acquire the minimum drive test MDT data and subcarrier width of the base station radio frequency unit; The range module, connected to the data module, is used to obtain the target area range where the base station radio frequency unit is located based on MDT data and subcarrier width. The candidate module, connected to the range module, is used to acquire M candidate positions of the base station radio frequency unit at preset intervals within the target area. The final selection module, connected to the candidate module, is used to obtain the target location of the base station radio frequency unit from the candidate locations based on the distance to the sample locations of the MDT data, specifically including: The antenna mounting height unit is used to obtain the second latitude and longitude of M candidate locations and the antenna mounting height H of the base station radio frequency unit. ant ; The first estimation unit is used to obtain the estimated horizontal distance D between the candidate location and the corresponding sample location in the MDT data, based on the second latitude and longitude of each candidate location j∈(1,M) and the first latitude and longitude of the sample location i∈(1,N) representing the UE in the N MDT data. (i,j)_2D ; The second estimation unit is used to estimate based on the antenna mounting height H. ant Estimated horizontal distance D (i,j)_2D Calculate the estimated 3D distance D between each candidate location and the corresponding sample location in the MDT data. (i,j)_3D ; Final selection unit, used to determine the estimated 3D distance D (i,j)_3D Is it located at the minimum and maximum 3D distance (D)? i,3D-min D i,3D-max Within ) the target location of the base station radio frequency unit is obtained from the candidate locations, (D i,3D-min D i,3D-max The minimum and maximum 3D distance between the sample location of each MDT data obtained based on each subcarrier width and the corresponding TA value and the base station radio frequency unit is 3D distance.

9. A base station radio frequency unit location acquisition device, characterized in that, The system includes a memory and a processor. The memory stores a computer program. When the processor runs the computer program stored in the memory, the processor executes the base station radio frequency unit location acquisition method as described in any one of claims 1-7.

10. A computer-readable storage medium, characterized in that, It stores a computer program, which, when executed by a processor, implements the base station radio frequency unit location acquisition method as described in any one of claims 1-7.

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