CN103906104A - Method and device for positioning and covering hole - Google Patents
Method and device for positioning and covering hole Download PDFInfo
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Abstract
The invention discloses a method for positioning and covering a hole. The method comprises the steps of selecting out weak covering grids according to a measurement report (MR) of all sampling points; selecting out a grid covering the hole from the weak covering grids; determining the position of the grid covering the hole. The invention further discloses a device for positioning and covering the hole. By means of the method and the device for positioning and covering the hole, manual operation is avoided, and efficiency and accuracy in hole positioning and covering can be ensured.
Description
Technical Field
The present invention relates to the field of mobile communications, and in particular, to a method and an apparatus for locating a coverage hole.
Background
The coverage hole refers to that the pilot signal strength of a local area appearing in a planned coverage range is too low to form continuous coverage, so that abnormal events such as access failure, call drop, handover failure and the like caused by weak signals are generated. Currently, there are two methods for locating coverage holes: one is to locate the coverage hole by means of customer complaints and whole network drive test information; and the other method is to use Key Performance Indicators (KPIs) to perform comprehensive analysis and position coverage holes at a cell level.
However, in the above method for locating coverage holes by means of customer complaints and whole network drive test information, because the number of sampling points of customer complaints or whole network drive tests is limited and the method has regional limitations, the method has no wide representativeness and cannot comprehensively reflect the coverage condition of the network; moreover, the cost is high and the labor input is large. Although the method for comprehensively analyzing and positioning the coverage hole by using the KPI can solve the problems of problem discovery lag, few sampling points, limited analysis area, incomplete problem discovery and the like to a certain extent, the statistics of the network management data is based on a cell, the coverage range of the cell is wider and is about 0.6-1.6 KM, and the coverage range of the suburbs or rural areas is wider, so that the phenomenon that a part of weak coverage sampling points are neutralized by a large number of normal sampling points due to more sampling points can occur, and for the cells with coverage problems discovered by analyzing the network management data, the coverage range of the cell is wider, and the position of the coverage hole is difficult to accurately position.
Therefore, the method for positioning the coverage hole in the prior art is not accurate enough, and has low speed and large manpower investment.
Disclosure of Invention
In view of the above, the present invention provides a method and an apparatus for locating a coverage hole, which can avoid manual operation and ensure efficiency and accuracy of locating the coverage hole.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
the invention provides a method for positioning a coverage hole, which comprises the following steps:
selecting a weak coverage grid according to Measurement Reports (MR) of all sampling points;
and selecting a coverage hole grid from the weak coverage grids, and determining the position of the coverage hole grid.
In the above scheme, the selecting the weak coverage grid according to the MRs of all the sampling points includes: determining the position coordinates corresponding to each sampling point by using all the currently acquired MRs, and dividing each sampling point into corresponding grid areas according to the position coordinates corresponding to each sampling point; and extracting the grid regions one by one to serve as current grid regions, and determining whether the current grid regions are weak coverage grids or not by using MRs corresponding to all sampling points in the current grid regions.
In the foregoing solution, the determining whether the current grid region is a weak coverage grid by using MRs corresponding to all sampling points in the current grid region includes: determining effective sampling points in the current grid region according to MRs corresponding to all sampling points in the current grid region, calculating the ratio of the weak coverage sampling points to the effective sampling points according to the number of the MRs which are lower than the weak coverage level threshold value in the MRs corresponding to all the sampling points as the weak coverage sampling points, judging whether the ratio is smaller than the weak coverage grid region threshold value, and if so, judging that the current grid region is the weak coverage grid region.
In the foregoing solution, the selecting a coverage hole grid from the weak coverage grids and determining a position of the coverage hole grid includes: selecting weak coverage grids one by one, and sequentially acquiring Location Area Codes (LAC) and Cell Identities (CI) and level values of all coverage cells of each effective sampling point from the selected weak coverage grids until level values of all coverage cells corresponding to all effective sampling points in the selected weak coverage grids are acquired; and judging whether the selected weak coverage grids are coverage hole grids or not according to the level values of all the coverage cells, and determining the positions of the coverage hole grids.
In the foregoing solution, the determining whether the selected weak coverage grid is a coverage hole grid according to the level values of all the coverage cells includes: and extracting CI and level values corresponding to all coverage cells corresponding to the selected weak coverage grids, counting the number of all level values of each coverage cell, selecting the number of the weak level values of each coverage cell, calculating the ratio of the number of the weak level values of each coverage cell to the number of all level values to serve as the ratio of the coverage cells, judging whether the ratio of all the coverage cells in the selected weak coverage grids is smaller than the level threshold value of the weak coverage cells, and if so, determining the selected weak coverage grids as coverage hole grids.
The invention also provides a device for locating a coverage hole, comprising: the device comprises a positioning module and a judging module; wherein,
the positioning module is used for selecting a weak coverage grid according to the MRs of all sampling points and sending the information of the weak coverage grid to the judging module;
and the judging module is used for selecting the coverage hole grids from the weak coverage grids sent by the positioning module and determining the positions of the coverage hole grids.
In the above scheme, the positioning module is specifically configured to determine a position coordinate corresponding to each sampling point by using all currently acquired MRs, and divide each sampling point into a corresponding grid region according to the position coordinate corresponding to each sampling point; and extracting the grid regions one by one to serve as current grid regions, and determining whether the current grid regions are weak coverage grids or not by using MRs corresponding to all sampling points in the current grid regions.
In the foregoing scheme, the positioning module is specifically configured to determine effective sampling points in the current grid region according to the MRs corresponding to all sampling points in the current grid region, calculate a ratio of the weak coverage sampling points to the effective sampling points according to the number of the MRs lower than the weak coverage level threshold in the MRs corresponding to each sampling point, determine whether the ratio is smaller than the weak coverage grid region threshold, and if the ratio is smaller than the weak coverage grid region threshold, determine that the current grid region is the weak coverage grid region.
In the above scheme, the determining module is specifically configured to select weak coverage grids one by one, and sequentially obtain LAC, CI, and level values of all coverage cells of each effective sampling point from the selected weak coverage grids until level values of all coverage cells corresponding to all effective sampling points in the selected weak coverage grids are obtained; and judging whether the selected weak coverage grids are coverage hole grids or not according to the level values of all the coverage cells, and determining the positions of the coverage hole grids.
In the foregoing solution, the determining module is specifically configured to extract CI and level values corresponding to all coverage cells corresponding to the selected weak coverage grid, count the number of all level values of each coverage cell, select the number of weak level values of each coverage cell, calculate a ratio of the number of weak level values of each coverage cell to the number of all level values as a coverage cell ratio, determine whether all coverage cell ratios in the selected weak coverage grid are smaller than a weak coverage cell level threshold value, and if so, determine that the selected weak coverage grid is a coverage hole grid.
According to the method and the device for positioning the coverage hole, the weak coverage grids are selected according to the MR of all sampling points; and selecting a coverage hole grid from the weak coverage grids, and determining the position of the coverage hole grid. Thus, manual operation can be avoided; and because the coverage hole is positioned based on the grid area, the problem that the coverage hole cannot be accurately positioned due to the overlarge coverage area of the cell can be avoided, and the accuracy and the timeliness of the positioning of the coverage hole are ensured.
Drawings
FIG. 1 is a schematic flow chart of a method for locating coverage holes according to the present invention;
FIG. 2 is a schematic diagram of the structure of the device for locating coverage holes according to the present invention.
Detailed Description
The basic idea of the invention is: selecting a weak coverage grid according to the MRs of all sampling points; and selecting a coverage hole grid from the weak coverage grids, and determining the position of the coverage hole grid.
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
The method for positioning the coverage hole, as shown in fig. 1, includes the following steps:
step 101: and selecting a weak coverage grid according to the MRs of all sampling points.
Specifically, the position coordinates corresponding to each sampling point are determined by using all currently acquired MRs, and each sampling point is divided into corresponding grid regions according to the position coordinates corresponding to each sampling point; and extracting the grid regions one by one to serve as current grid regions, and determining whether the current grid regions are weak coverage grids or not by using MRs corresponding to all sampling points in the current grid regions.
Here, the grid area is latitude and longitude coordinate information of an area which is stored in the network management equipment and divided according to the actual situation, and the size of the grid area can be 100 × 100M;
the determining the position coordinates corresponding to each sampling point by using all currently acquired MRs includes: and obtaining the LAC, CI and level values of the service cell and the LAC, CI and level values of the adjacent cells according to the MR, calculating the longitude and latitude information of the region where the MR is located by using a positioning algorithm, and determining the grid region where the MR is located according to the longitude and latitude information. The positioning algorithm is the prior art and can be a triangulation positioning algorithm; the LAC and the CI of the serving cell are obtained in the prior art, and are not described herein;
the determining whether the current grid region is a weak coverage grid by using the MRs corresponding to all the sampling points in the current grid region includes: determining effective sampling points in the current grid region according to MRs corresponding to all sampling points in the current grid region, calculating the ratio of the weak coverage sampling points to the effective sampling points according to the number of the MRs which are lower than the weak coverage level threshold value in the MRs corresponding to all the sampling points as the weak coverage sampling points, judging whether the ratio is smaller than the weak coverage grid region threshold value, and if so, judging that the current grid region is the weak coverage grid region.
Wherein the weak coverage level threshold value may be-90 dBm; the effective sampling points are as follows: valid (Valid) in the MR is marked as Valid, TA is not empty and sampling points of MR downlink index conditions exist; the weak coverage grid area threshold may be 30%.
Step 102: and selecting a coverage hole grid from the weak coverage grids, and determining the position of the coverage hole grid.
Specifically, weak coverage grids are selected one by one, and LACs, CIs and level values of all coverage cells of all effective sampling points are sequentially obtained from the selected weak coverage grids until level values of all coverage cells corresponding to all effective sampling points in the selected weak coverage grids are obtained; and judging whether the selected weak coverage grids are coverage hole grids or not according to the level values of all the coverage cells, and determining the positions of the coverage hole grids.
Here, the coverage cell is a serving cell or an adjacent cell covering an effective sampling point;
the obtaining of the LAC, the CI, and the level values of all the coverage cells of each valid sampling point includes: according to the MR corresponding to the effective sampling point, determining LAC, CI and level values of a serving cell and adjacent cells according to BCCH and BSIC in the MR; the determining the LAC, CI, and level values of the serving cell and the neighboring cells according to the BCCH and BSIC in the MR is the prior art, and is not described herein again.
The determining whether the selected weak coverage grids are coverage hole grids according to the level values of all the coverage cells includes: and extracting CI and level values corresponding to all coverage cells corresponding to the selected weak coverage grids, counting the number of all level values of each coverage cell, selecting the number of the weak level values of each coverage cell, calculating the ratio of the number of the weak level values of each coverage cell to the number of all level values to serve as the ratio of the coverage cells, judging whether the ratio of all the coverage cells in the selected weak coverage grids is smaller than the level threshold value of the weak coverage cells, and if so, determining the selected weak coverage grids as coverage hole grids. The weak coverage cell level threshold value is a value preset according to an actual situation, and may be 50%.
And the step of determining the position of the coverage hole grid is that the network management equipment determines the longitude and latitude information of the coverage hole grid according to the position information of each grid area stored by the network management equipment.
After the step 102 is completed, subsequent adjustment may be performed according to the prior art, for example, a reasonable coverage area of the grid may be determined by calculating the number of MR effective sampling points of each serving cell appearing in each grid area, so as to provide support for optimization of a coverage hole. The calculation is to count the service cell CIs of all effective sampling points in the grid area, then calculate the ratio of the effective sampling points of each CI to the total effective sampling points in the grid, and can count the coverage ratio of each cell in the grid, thereby obtaining the cell which is most likely to become the main coverage of the grid.
As shown in fig. 2, the present invention provides an apparatus for locating a coverage hole, the apparatus comprising: a positioning module 21 and a determination module 22; wherein,
the positioning module 21 is configured to select a weak coverage grid according to the MRs of all sampling points, and send information of the weak coverage grid to the determination module 22;
and the determining module 22 is configured to select a coverage hole grid from the weak coverage grids sent by the positioning module 21, and determine a position of the coverage hole grid.
The positioning module 21 is specifically configured to determine a position coordinate corresponding to each sampling point by using all currently acquired MRs, and divide each sampling point into a corresponding grid region according to the position coordinate corresponding to each sampling point; and extracting the grid regions one by one to serve as current grid regions, and determining whether the current grid regions are weak coverage grids or not by using MRs corresponding to all sampling points in the current grid regions.
The positioning module 21 is specifically configured to store longitude and latitude coordinate information of an area divided according to an actual situation as grid area information, where the size of the grid area may be 100 × 100M;
the positioning module 21 is specifically configured to obtain LAC, CI, and level values of the serving cell and LAC, CI, and level values of the neighboring cells according to the MR, calculate latitude and longitude information of an area where the MR is located by using a positioning algorithm, and determine a grid area where the MR is located according to the latitude and longitude information. The positioning algorithm is the prior art and can be a triangulation positioning algorithm; the LAC and the CI of the serving cell are obtained in the prior art, and are not described herein.
The positioning module 21 is specifically configured to determine effective sampling points in the current grid region according to the MRs corresponding to all sampling points in the current grid region, calculate a ratio of the weak coverage sampling points to the effective sampling points according to the number of the MRs lower than the weak coverage level threshold in the MRs corresponding to each sampling point, determine whether the ratio is smaller than the weak coverage grid region threshold, and determine that the current grid region is the weak coverage grid region if the ratio is smaller than the weak coverage grid region threshold. Wherein the weak coverage level threshold value may be-90 dBm; the effective sampling points are as follows: valid (Valid) in the MR is marked as Valid, TA is not empty and sampling points of MR downlink index conditions exist; the weak coverage grid area threshold may be 30%.
The determining module 22 is specifically configured to select weak coverage grids one by one, and sequentially obtain LAC, CI, and level values of all coverage cells of each effective sampling point from the selected weak coverage grids until level values of all coverage cells corresponding to all effective sampling points in the selected weak coverage grids are obtained; and judging whether the selected weak coverage grids are coverage hole grids or not according to the level values of all the coverage cells, and determining the positions of the coverage hole grids.
The determining module 22 is specifically configured to determine LAC, CI, and level values of the serving cell and the neighboring cells according to the MR corresponding to the effective sampling point and according to the BCCH and BSIC in the MR; the determining the LAC, CI, and level values of the serving cell and the neighboring cells according to the BCCH and BSIC in the MR is the prior art, and is not described herein again.
The determining module 22 is specifically configured to extract the CI and level values corresponding to all coverage cells corresponding to the selected weak coverage grid, count the number of all level values of each coverage cell, select the number of weak level values of each coverage cell, calculate a ratio of the number of weak level values of each coverage cell to the number of all level values as a coverage cell ratio, determine whether all coverage cell ratios in the selected weak coverage grid are smaller than a weak coverage cell level threshold value, and if so, determine that the selected weak coverage grid is a coverage hole grid. The weak coverage cell level threshold value is a value preset according to an actual situation, and may be 50%.
The determination module 22 is specifically configured to determine longitude and latitude information of the coverage hole grid according to the position information of each grid area stored in the positioning module 21; correspondingly, the positioning module 21 is further configured to provide the determination module 22 with location information of each grid region.
The determination module 22 is further configured to determine a reasonable coverage area of the grid by calculating an effective MR sampling point number of each serving cell appearing in each grid area, so as to provide support for optimization of a coverage hole.
The determining module 22 is specifically configured to count the serving cells CI of all effective sampling points in the grid region, then calculate a ratio of the effective sampling point number of each CI to all effective sampling points in the grid, and can count a coverage ratio of each cell in the grid, so as to obtain a cell which is most likely to be a main coverage of the grid.
The device can be used as a logic module to be installed in any equipment for analyzing data.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.
Claims (10)
1. A method of locating a coverage hole, the method comprising:
selecting a weak coverage grid according to the measurement reports MR of all sampling points;
and selecting a coverage hole grid from the weak coverage grids, and determining the position of the coverage hole grid.
2. The method of claim 1, wherein the selecting the weak coverage grid according to the MR of all the sampling points comprises: determining the position coordinates corresponding to each sampling point by using all the currently acquired MRs, and dividing each sampling point into corresponding grid areas according to the position coordinates corresponding to each sampling point; and extracting the grid regions one by one to serve as current grid regions, and determining whether the current grid regions are weak coverage grids or not by using MRs corresponding to all sampling points in the current grid regions.
3. The method of claim 2, wherein the determining whether the current grid region is a weak coverage grid by using the MRs corresponding to all the sampling points in the current grid region comprises: determining effective sampling points in the current grid region according to MRs corresponding to all sampling points in the current grid region, calculating the ratio of the weak coverage sampling points to the effective sampling points according to the number of the MRs which are lower than the weak coverage level threshold value in the MRs corresponding to all the sampling points as the weak coverage sampling points, judging whether the ratio is smaller than the weak coverage grid region threshold value, and if so, judging that the current grid region is the weak coverage grid region.
4. The method of claim 1, wherein selecting a coverage hole grid from the weak coverage grids, and determining a location of the coverage hole grid comprises: selecting weak coverage grids one by one, and sequentially acquiring the location area codes LAC and the cell codes CI and the level values of all coverage cells of all effective sampling points from the selected weak coverage grids until the level values of all the coverage cells corresponding to all the effective sampling points in the selected weak coverage grids are acquired; and judging whether the selected weak coverage grids are coverage hole grids or not according to the level values of all the coverage cells, and determining the positions of the coverage hole grids.
5. The method of claim 4, wherein the determining whether the selected weak coverage grid is a coverage hole grid according to the level values of the all coverage cells comprises: and extracting CI and level values corresponding to all coverage cells corresponding to the selected weak coverage grids, counting the number of all level values of each coverage cell, selecting the number of the weak level values of each coverage cell, calculating the ratio of the number of the weak level values of each coverage cell to the number of all level values to serve as the ratio of the coverage cells, judging whether the ratio of all the coverage cells in the selected weak coverage grids is smaller than the level threshold value of the weak coverage cells, and if so, determining the selected weak coverage grids as coverage hole grids.
6. An apparatus for locating a coverage hole, the apparatus comprising: the device comprises a positioning module and a judging module; wherein,
the positioning module is used for selecting a weak coverage grid according to the MRs of all sampling points and sending the information of the weak coverage grid to the judging module;
and the judging module is used for selecting the coverage hole grids from the weak coverage grids sent by the positioning module and determining the positions of the coverage hole grids.
7. The apparatus according to claim 6, wherein the positioning module is specifically configured to determine a position coordinate corresponding to each sampling point by using all currently acquired MRs, and divide each sampling point into corresponding grid regions according to the position coordinate corresponding to each sampling point; and extracting the grid regions one by one to serve as current grid regions, and determining whether the current grid regions are weak coverage grids or not by using MRs corresponding to all sampling points in the current grid regions.
8. The apparatus according to claim 7, wherein the positioning module is specifically configured to determine effective sampling points in the current grid region according to MRs corresponding to all sampling points in the current grid region, calculate a ratio of the weak coverage sampling points to the effective sampling points according to a number of MRs lower than a weak coverage level threshold in the MR corresponding to each sampling point as the weak coverage sampling points, determine whether the ratio is smaller than a weak coverage grid region threshold, and if the ratio is smaller than the weak coverage grid region threshold, determine that the current grid region is the weak coverage grid region.
9. The apparatus according to claim 6, wherein the determining module is specifically configured to select weak coverage grids one by one, and sequentially obtain LAC and CI and level values of all coverage cells of each valid sampling point from the selected weak coverage grids until obtaining level values of all coverage cells corresponding to all valid sampling points in the selected weak coverage grids; and judging whether the selected weak coverage grids are coverage hole grids or not according to the level values of all the coverage cells, and determining the positions of the coverage hole grids.
10. The apparatus according to claim 9, wherein the determining module is specifically configured to extract CIs and level values corresponding to all coverage cells corresponding to the selected weak coverage grid, count the number of all level values of each coverage cell, select the number of weak level values of each coverage cell, calculate a ratio of the number of weak level values of each coverage cell to the number of all level values as a coverage cell ratio, determine whether all coverage cell ratios in the selected weak coverage grid are smaller than a weak coverage cell level threshold value, and if so, determine that the selected weak coverage grid is a coverage hole grid.
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