CN106856608B - LTE network base station coverage effectiveness evaluation method and device - Google Patents

LTE network base station coverage effectiveness evaluation method and device Download PDF

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Publication number
CN106856608B
CN106856608B CN201510902651.4A CN201510902651A CN106856608B CN 106856608 B CN106856608 B CN 106856608B CN 201510902651 A CN201510902651 A CN 201510902651A CN 106856608 B CN106856608 B CN 106856608B
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cell
base station
target area
coverage
signal intensity
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CN106856608A (en
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刘洋
于飞
陈崴嵬
黄志勇
叶青
王雨
张曼
史文祥
蔡子龙
李佳
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China United Network Communications Group Co Ltd
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China United Network Communications Group Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/18—Network planning tools
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/02—Arrangements for optimising operational condition

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  • Computer Networks & Wireless Communication (AREA)
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Abstract

The embodiment of the invention provides a method and a device for evaluating coverage effectiveness of an LTE network base station, which relate to the technical field of communication and are used for providing reliable data support for reasonably optimizing a network structure, reducing cell interference and reducing operation and maintenance cost, and acquiring engineering parameters of each base station in a drive test area at least comprising a target area and network data information of each 3G cell in a 3G base station coverage range constructed at the same site as the base station; calculating the value coefficient of each cell in the coverage area of each base station in the target area; determining all structured base stations in the target area; calculating the total coverage effective rate of all the structured base stations in the target area; and if the total coverage efficiency of all the structured base stations in the target area is greater than or equal to the preset coverage rate, determining that the structured base stations in the target area meet the coverage requirement. The embodiment of the invention is used for evaluating the coverage effectiveness of the base station.

Description

LTE network base station coverage effectiveness evaluation method and device
Technical Field
The invention relates to the technical field of communication, in particular to a method and a device for evaluating coverage effectiveness of an LTE network base station.
Background
With the development of 4G (the 4th Generation mobile communication technology) networks, the domestic operators have deployed large-scale deployment of LTE (Long Term Evolution) networks and have entered into the business stage, and the deployment of the domestic operators mostly adopts 1: 1, building an LTE (Long term evolution) network.
Because the base station of the existing 3G network has the problems of large base station density and small station distance in partial areas or scenes, the method comprises the following steps on the basis of the 3G network 1: 1, after an LTE (Long Term Evolution) network is built, the problems of large density and small inter-station distance between LTE base stations are also generated, so that the inter-cell interference belonging to the LTE network is serious, and the improvement of data rate performance is restricted, which affects user experience, and because a soft handover band is adopted between 3G cells to avoid the interference between 3G cells, namely two communication links are simultaneously built between 3G cells, so that a mobile user and an original cell and a new cell both maintain communication links, when the mobile user is poor in the original cell signal, the mobile user can be switched to the new cell, and after stable communication is built in the new cell, the mobile user is disconnected from the original cell. Because the LTE base station is a same-frequency networking, and hard switching is adopted among all cells in the LTE network, the LTE base station is very sensitive to same-frequency interference, and is constructed in a way of sharing a station with the 3G network, the soft switching gain of the 3G network can be converted into the same-frequency interference of the LTE base station, the performance of the LTE network is reduced, and the user experience is influenced.
If the interference caused by the unreasonable network structure in a certain area is serious, the unreasonable base station in the unreasonable network structure can be closed to improve the network structure, but in order to guarantee user experience, an operator can not easily change the existing network under the condition of not having sufficient data support, so that the coverage effectiveness of other base stations after closing part of unreasonable base stations is verified on the premise of not changing the existing network, and the advanced data support is provided for optimizing the network structure.
In the prior art, the effectiveness of a base station is generally analyzed through network simulation, that is, an LTE base station to be closed in a region is determined by combining coverage performance, Interference performance and traffic volume of the region, the coverage performance RSRP (Reference Signal Receiving Power) and SINR Interference performance (Signal to Interference plus Noise Ratio) of other remaining LTE base stations are simulated, and whether the coverage performance of the remaining LTE base station meets network requirements is analyzed.
However, the accuracy of network simulation is limited by the accuracy of geographical information of the selected area, the applicability of the propagation model and other factors, and the network simulation result often cannot completely reflect the actual situation of the network.
Disclosure of Invention
The embodiment of the invention provides a method and a device for evaluating coverage effectiveness of an LTE network base station, which are used for calculating the coverage effectiveness of a structured base station in a target area on the premise of keeping the existing network structure and providing reliable data support for reasonably optimizing the network structure, reducing cell interference and reducing operation and maintenance cost.
In order to achieve the above purpose, the embodiment of the invention adopts the following technical scheme:
in a first aspect, an embodiment of the present invention provides a method for evaluating coverage effectiveness of an LTE network base station, including:
acquiring engineering parameters of each base station in a drive test area at least comprising a target area and network data information of each cell in a 3G base station coverage area constructed in the same address with the base station; wherein the network data information of each cell comprises the data traffic volume and the overlapping coverage coefficient of the 3G cell;
calculating a value coefficient of each cell in the coverage range of each base station in the target area according to the data traffic and the overlapping coverage coefficient;
determining all structured base stations in the target area according to the value coefficient of each cell in the coverage range of each base station in the target area, wherein the value coefficient of at least one cell covered by the structured base stations is greater than or equal to a first preset value coefficient threshold;
calculating the total coverage effective rate of all the structured base stations in the target area;
and if the total coverage efficiency of all the structured base stations in the target area is greater than or equal to a preset coverage rate, determining that the structured base stations in the target area meet the coverage requirement.
With reference to the first aspect, in a first possible implementation manner of the first aspect, the calculating an effective total coverage rate of all structured base stations in the target area includes:
analyzing the drive test data to obtain analyzed drive test data, wherein the analyzed drive test data comprises identification information of a serving cell, signal intensity of the serving cell, identification information of an adjacent cell and signal intensity of the adjacent cell, which correspond to each sampling point;
counting the number of covered effective sampling points and the number of total sampling points of the target area according to the analyzed drive test data, wherein the number of covered effective sampling points comprises the sum of the number of sampling points of which the service cell is a structured base station covered cell and the signal intensity is greater than or equal to the preset signal intensity and the number of sampling points of which the service cell is not satisfied as the structured base station covered cell and the signal intensity is greater than or equal to the preset signal intensity but at least one adjacent cell is the structured base station covered cell and the signal intensity is greater than or equal to the preset signal intensity;
according to the formula Reffectivecoverage＝Seffectivecoverage/SallX 100%, obtaining the total coverage efficiency of all the structured base stations in the target area, wherein ReffectivecoverageFor coverage efficiency of structured base stations, SeffectivecoverageCovering the target area with the number of valid sampling points, SallThe total number of sampling points in the target area.
With reference to the first possible implementation manner of the first aspect, in a second possible implementation manner of the first aspect, the obtaining the total number of sampling points of the target area includes:
acquiring the total sampling point number S of the drive test areatotalThe total number of sampling points StotalFor each sample point in the drive test areaThe sum of the sampling points;
if the drive test area is larger than the target area, acquiring the number S of sampling points of which the service cell is a base station lower cell in an area except the target area in the drive test area and the signal intensity is larger than or equal to the preset signal intensityother；
According to the total sampling point number S of the drive test areatotalAnd the service cell is a sampling point number S of a base station lower cell in an area except the target area in the road measurement area, and the signal intensity is more than or equal to the preset signal intensityotherObtaining the total sampling point number S of the target areaall。
With reference to the first possible implementation manner of the first aspect and the second possible implementation manner of the first aspect, in a third possible implementation manner of the first aspect, the obtaining the number of covered effective sampling points of the target area further includes:
acquiring identification information of each cell in the drive test area;
if the identification information corresponding to all the cells covered by the structured base station is the same as the identification information of any one of the cells in the route measurement area except the cells covered by the structured base station, acquiring all the cells with the same identification information;
judging whether a serving cell is a sampling point which is covered by the structured base station with the same identification information and has signal intensity larger than or equal to the preset signal intensity and a sampling point which is not satisfied that the serving cell is the structured base station and has signal intensity larger than or equal to the preset signal intensity but has adjacent cell signal intensity larger than or equal to the preset signal intensity and the adjacent cells are the sampling points which are covered by the structured base station in the target area or not according to the analyzed drive test data and the engineering parameters;
if the service cell is a cell under the structured base station with the same identification information and the sampling point with the signal intensity larger than or equal to the preset signal intensity and the sampling point which does not meet the condition that the service cell is a cell under the structured base station and the signal intensity is larger than or equal to the preset signal intensity but the sampling point of the cell under the structured base station with the same identification information and the adjacent cell with the signal intensity larger than or equal to the preset signal intensity is not the coverage effective sampling point of the cell covered by the structured base station in the target area, the sampling points are removed from the coverage effective sampling points of the structured base station covering all the cells.
With reference to the first aspect, in a fourth possible implementation manner of the first aspect, for a first base station, the first base station is any one base station in the target area, for a first cell, the first cell is any one cell covered by the first base station, and the calculating, according to the data traffic and the overlapping coverage coefficient, a cost coefficient of each cell covered by each base station in the target area includes:
acquiring data traffic and an overlapping coverage coefficient of the first cell;
according to formula Xvalue＝T3G/XoverlapCalculating a cost coefficient for the first cell, wherein XvalueAs a value coefficient, T3GIs the data traffic of the first cell, XoverlapIs the overlapping coverage coefficient of the first cell.
With reference to the first aspect, in a fifth possible implementation manner of the first aspect, the method further includes: if the total coverage effective rate of all the structured base stations in the target area is smaller than a preset coverage rate, adjusting the first preset value coefficient threshold to be a second preset value coefficient threshold;
re-determining all the structured base stations in the target area, wherein the cost coefficient of at least one cell covered by each re-determined structured base station is greater than or equal to a second preset cost coefficient threshold;
and calculating the total coverage effective rate of all the structural base stations in the re-determined target area until the total coverage effective rate of all the structural base stations in the target area is greater than or equal to the preset coverage rate.
In a second aspect, an embodiment of the present invention further provides an LTE network base station coverage validity evaluation apparatus, including:
the system comprises an acquisition unit, a processing unit and a processing unit, wherein the acquisition unit is used for acquiring engineering parameters of each base station in a drive test area at least comprising a target area and network data information of each cell in a 3G base station coverage range constructed at the same site as the base station; wherein the network data information of each cell comprises the data traffic volume and the overlapping coverage coefficient of the 3G cell;
a first calculating unit, configured to calculate, according to the data traffic and an overlapping coverage coefficient, a value coefficient of each cell in a coverage area of each base station in the target area;
a first determining unit, configured to determine all structured base stations in the target area according to a cost coefficient of each cell in a coverage area of each base station in the target area, where the cost coefficient of at least one cell covered by the structured base station is greater than or equal to a first preset cost coefficient threshold;
a second calculating unit, configured to calculate a total coverage effective rate of all the structured base stations in the target area after the first determining unit determines all the structured base stations in the target area;
a judging unit, configured to judge whether a total coverage effective rate of all structured base stations in the target area is greater than or equal to a preset coverage rate;
and the judging unit is used for judging that the structured base stations in the target area meet the coverage requirement after the judging unit determines that the total coverage efficiency of all the structured base stations in the target area is greater than or equal to the preset coverage rate.
With reference to the second aspect, in a first possible implementation manner of the second aspect, the second computing unit includes:
the acquisition module is used for analyzing the drive test data to acquire analyzed drive test data, wherein the analyzed drive test data comprises identification information of a serving cell, signal intensity of the serving cell, identification information of a neighboring cell and signal intensity of the neighboring cell, which correspond to each sampling point;
a counting module, configured to count a number of coverage effective sampling points and a total number of sampling points of the target area according to the analyzed drive test data, where the number of coverage effective sampling points includes a sum of a number of sampling points for which a serving cell is a structured base station coverage lower cell and for which signal strength is greater than or equal to a preset signal strength, and a number of sampling points for which the serving cell is not satisfied and for which the serving cell is a structured base station lower cell and for which signal strength is greater than or equal to the preset signal strength but for which at least one neighboring cell exists and is a structured base station lower cell and for which signal strength is greater than or equal to the preset signal strength;
a calculation module for calculating according to formula Reffectivecoverage＝Seffectivecoverage/SallX 100%, obtaining the total coverage efficiency of all the structured base stations in the target area, wherein ReffectivecoverageFor coverage efficiency of structured base stations, SeffectivecoverageCovering the target area with the number of valid sampling points, SallThe total number of sampling points in the target area.
With reference to the second possible implementation manner of the second aspect, in a second possible implementation manner of the second aspect, the statistics module is specifically configured to:
acquiring the total sampling point number S of the drive test areatotalThe total number of sampling points StotalThe sum of the sampling points of each sampling point in the drive test area is obtained;
if the road measurement area is larger than the target area, acquiring the number S of sampling points with signal intensity larger than or equal to the preset signal intensity in all service cells in the area except the target area in the road measurement areaother；
According to the total sampling point number S of the drive test areatotalAnd the service cell is a sampling point number S of a base station lower cell in an area except the target area in the road measurement area, and the signal intensity is more than or equal to the preset signal intensityotherObtaining the total sampling point number S of the target areaall。
With reference to the first possible implementation manner of the second aspect and the second possible implementation manner of the second aspect, in a third possible implementation manner of the second aspect, the analyzed drive test data further includes sampling time and geographic position information of each sampling point, and the statistical module is further specifically configured to:
acquiring identification information of each cell in the drive test area;
if the identification information corresponding to all the cells covered by the structured base station is the same as the identification information of any one of the cells in the route measurement area except the cells covered by the structured base station, acquiring all the cells with the same identification information;
judging whether a serving cell is a sampling point which is covered by the structured base station with the same identification information and has signal intensity larger than or equal to the preset signal intensity and a sampling point which is not satisfied that the serving cell is the structured base station and has signal intensity larger than or equal to the preset signal intensity but has adjacent cell signal intensity larger than or equal to the preset signal intensity and the adjacent cells are the sampling points which are covered by the structured base station in the target area or not according to the analyzed drive test data and the engineering parameters;
if the service cell is a cell under the structured base station with the same identification information and the sampling point with the signal intensity larger than or equal to the preset signal intensity and the sampling point which does not meet the condition that the service cell is a cell under the structured base station and the signal intensity is larger than or equal to the preset signal intensity but the sampling point of the cell under the structured base station with the same identification information and the adjacent cell with the signal intensity larger than or equal to the preset signal intensity is not the coverage effective sampling point of the cell covered by the structured base station in the target area, the sampling points are removed from the coverage effective sampling points of the structured base station covering all the cells.
With reference to the second aspect, in a fourth possible implementation manner of the second aspect, the first computing unit is specifically configured to:
acquiring data traffic and an overlapping coverage coefficient of the first cell;
according to formula Xvalue＝T3G/XoverlapCalculating a cost coefficient for the first cell, wherein XvalueAs a value coefficient, T3GIs the data traffic of the first cell, XoverlapIs the overlapping coverage coefficient of the first cell.
With reference to the second aspect, in a fifth possible implementation manner of the second aspect, the apparatus further includes an adjusting unit, a second determining unit, and a third calculating unit;
the adjusting unit is configured to adjust the first preset cost coefficient threshold to a second preset cost coefficient threshold when the determining unit determines that the total coverage effective rate of all the structured base stations in the target area is smaller than a preset coverage rate;
a second determining unit, configured to re-determine all structured base stations in the target area after the adjusting unit adjusts the first preset cost coefficient threshold to a second preset cost coefficient threshold, where a cost coefficient of at least one cell covered by each re-determined structured base station is greater than or equal to the second preset cost coefficient threshold;
and a third calculating unit, configured to calculate, after the second determining unit re-determines all the structured base stations in the target area, a total coverage effective rate of all the structured base stations in the re-determined target area until the total coverage efficiency of all the structured base stations in the target area is greater than or equal to the preset coverage rate.
The embodiment of the invention provides an LTE network base station coverage effectiveness evaluation method, which comprises the steps of firstly determining all structured base stations in a target area according to network data information, and then calculating the coverage effectiveness of all the structured base stations in the target area.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a first flowchart illustrating a method for evaluating coverage validity of an LTE network base station according to an embodiment of the present invention;
fig. 2 is a schematic flow chart of a method for evaluating coverage effectiveness of an LTE network base station according to an embodiment of the present invention;
fig. 3 is a third schematic flow chart of a method for evaluating coverage effectiveness of an LTE network base station according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a device for evaluating coverage validity of an LTE network base station according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a coverage validity evaluation apparatus for an LTE network base station according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
For the convenience of clearly describing the technical solutions of the embodiments of the present invention, in the embodiments of the present invention, the words "first", "second", and the like are used to distinguish the same items or similar items with basically the same functions and actions, and those skilled in the art can understand that the words "first", "second", and the like do not limit the quantity and execution order.
Before describing in detail the method for evaluating coverage effectiveness of an LTE network base station provided by the embodiment of the present invention, a serving cell and a neighboring cell are explained: the service cell of the embodiment of the invention is a cell which provides service for a sampling point when sampling, and the adjacent cell is a cell which can acquire the signal intensity of each sampling point and is adjacent to the service cell.
The embodiment of the invention is applied to the LTE network constructed at the same site as the existing 3G network base station.
The embodiment of the invention provides an LTE network base station coverage effectiveness evaluation method, as shown in FIG. 1, the method comprises the following steps:
s101, acquiring engineering parameters of each base station in a drive test area at least comprising a target area and network data information of each 3G cell in a 3G base station coverage area constructed in the same address with the base station; wherein the network data information of each cell comprises the data traffic volume and the overlapping coverage coefficient of the 3G cell;
s102, calculating a value coefficient of each cell in the coverage range of each base station in the target area according to the data traffic and the overlapping coverage coefficient;
s103, determining all structured base stations in the target area according to the value coefficient of each cell in the coverage area of each base station in the target area, wherein the value coefficient of at least one cell covered by the structured base stations is greater than or equal to a first preset value coefficient threshold;
s104, calculating the total coverage effective rate of all the structured base stations in the target area;
and S105, if the total coverage efficiency of all the structured base stations in the target area is greater than or equal to a preset coverage rate, determining that the structured base stations in the target area meet the coverage requirement.
The embodiment of the invention provides an LTE network base station coverage effectiveness evaluation method, which comprises the steps of firstly determining all structured base stations in a target area according to network data information, then calculating the coverage effectiveness of all the structured base stations in the target area, and canceling base stations with small intervals in the target area except the structured base stations on the premise of not influencing the operation of the existing network and ensuring the coverage effectiveness, thereby reducing the inter-cell interference, and providing effective data support for reducing LTE redundant base stations, improving the interference performance on the premise of ensuring the coverage, improving the LTE network performance and improving the network economic message.
The coverage effectiveness evaluation method for the LTE network base station in the embodiment of the present invention may be implemented by an LTE network base station coverage effectiveness evaluation device, and the LTE network base station coverage effectiveness evaluation device may be configured separately, which is not limited in the embodiment of the present invention.
The structured base station in the embodiment of the present invention is a base station that must be reserved in a target area to ensure coverage performance and service quality.
In order to make flexible application of existing drive test data, the drive test area in the embodiment of the present invention is usually greater than or equal to a target area, so as to ensure that all base stations in an area which fully utilizes the existing drive test data and needs to be covered and judged are calculated, because each base station corresponds to a unique base station code eNodeB-ID, longitude and latitude, after acquiring engineering parameters of the drive test area, the longitude and latitude corresponding to each base station in the target area, the base station code and identification information of each cell covered by each base station can be found out from the engineering parameters in the drive test area, network management data information of the cell refers to 3G base station information constructed in a co-location with the base station, and network data information of the cell under the 3G base station is acquired from a 3G system, generally, each base station is divided into at least 3 cells, each CELL can be uniquely determined by identification information, where the identification information may include a CELL identification (CELL-ID) or a CELL physical identification (PCI), and since one CELL corresponds to one Physical CELL Identification (PCI), and since the value range of the PCI is 0 to 503, the identification information of one CELL may be composed of a base station identification + a physical CELL identification PCI, for example, for a CELL with a CELL name a, the identification information may be written as eNodeB-ID1-PCI3, that is, the CELL is a base station covered by a base station with a base station code of 1, and the Physical CELL Identification (PCI) of the CELL is 3.
The embodiment of the present invention does not limit the specific acquisition mode of the engineering parameters, and may select the existing engineering parameters, or perform field measurement before performing coverage validity evaluation on the LTE network base station, and arrange the actually measured engineering parameters into a required format, where the engineering parameters include base station numbers of all base stations in a routing area, a longitude of the base station, a latitude of the base station, identification information of a cell covered by each base station, and a cell direction angle.
After the engineering parameters in the routing area are obtained, the engineering parameters may be screened, network data of the 3G base station is combined, a base station screening list including a structured base station in the target area, a base station in the target area, and a base station outside the target area (an area except the target area in the routing area) is formed, the screening list is stored in a storage device, and the required engineering parameters are obtained from the storage device through the LTE network base station coverage effectiveness evaluation device.
The method for acquiring the structured base station in the target area is various, and the method is not limited in the embodiment of the present invention, for example, the embodiment of the present invention may perform the screening by using a value coefficient of each cell in the target area, and the embodiment of the present invention takes a first base station and a first cell covered by the first base station as an example, the first base station is any one base station in the target area, and the first cell is any one cell covered by the first base station and does not have an indicative meaning, because the method and principle for determining whether any one base station in the target area is the structured base station are the same as those of the first base station.
Illustratively, step S102 may be implemented by the following steps:
s1021, acquiring data traffic and an overlapping coverage coefficient of the first cell;
s1022, according to the formula Xvalue＝T3G/XoverlapCalculating a cost coefficient for the first cell, wherein XvalueAs a value coefficient, T3GIs the data traffic of the first cell, XoverlapIs the overlapping coverage coefficient of the first cell.
Wherein the overlapping coverage coefficient may pass Xoverlap＝Rsoftho×Runservcell，Calculation of, wherein XoverlapOverlap coverage factor, RsofthoIs the soft handover ratio, R, of the first cellunservcellIs the non-primary serving cell ratio of the first cell. RsofthoFor soft handover ratio, RsofthoWireless link>1 sampling times/total sampling times 100%
And the soft handover proportion and the non-primary service cell occupation ratio can be obtained through engineering parameters.
RunservcellTAs non-primary serving cell ratio:
RunservcellT＝(Ttotal-Tbest)/Ttotal×100％
wherein, TtotalTotal traffic, T, for co-located WCDMA sitesbestAnd the co-located WCDMA station mainly serves the telephone traffic.
The data traffic of the first cell refers to data traffic of a cell under an existing 3G co-located 3G base station based on an existing network, and the data traffic refers to traffic based on existing network call data, and can be acquired from a network Operation and Maintenance Center (OMC) through an LTE network base station coverage validity evaluation device.
For example, the difference between the cell signal of the WCDMA network entering the active set and the serving cell signal is usually within 3dB, which is an overlapping coverage component of the LTE system, and is one of the sources of inter-cell interference, so the soft handover ratio of the co-sited WCDMA cell may indirectly reflect the interference problem caused by the overlapping coverage of the LTE network.
If the first cell's worth coefficient Xvalue<XthreholdDetermining that the first cell is a low-value cell, if all cells covered by any base station are low-value cells, the base station is an unstructured base station, and when network optimization is performed under the condition that the rest structured base stations meet the coverage performance,the unstructured base stations may be turned off to reduce interference.
In the embodiment of the present invention, the first preset cost coefficient threshold X is setthreholdThe specific parameters of (a) are not limited, and can be set according to the actual operation and maintenance conditions of the network.
In step S103, all the structured base stations in the target area may be obtained by determining a structured base station from the target area according to step S102, then marking the structured base station in the engineering parameters, for example, marking a base station code of the structured base station, or longitude or latitude of the base station, then screening all the marked structured base stations from the target area, and making a base station list, as shown in table 1:
the identification information of each cell is determined by the base station code and the physical cell identification PCI at the same time, that is, for any two cells, the two cells belong to the same cell only when the base station code and the physical cell identification PCI are the same.
For a specific implementation manner of step S104, the embodiment of the present invention does not limit this, and the implementation may exemplarily be implemented through steps S1041 to S1043:
s1041, analyzing the drive test data to obtain analyzed drive test data, wherein the analyzed drive test data comprises identification information of a serving CELL corresponding to each sampling point, signal intensity of each serving CELL, identification information of each neighboring CELL and signal intensity of each neighboring CELL, and the identification information can be Physical CELL Identification (PCI) or CELL identification (CELL-ID);
s1042, counting the number of covered effective sampling points and the number of total sampling points of the target area according to the analyzed drive test data, wherein the number of covered effective sampling points comprises the sum of the number of sampling points of which the service cell is a structured base station covered cell and the signal intensity is greater than or equal to the preset signal intensity and the number of sampling points of which the service cell is not satisfied as the structured base station covered cell and the signal intensity is greater than or equal to the preset signal intensity but at least one neighboring cell exists as the structured base station covered cell and the signal intensity is greater than or equal to the preset signal intensity;
s1043, according to formula Reffectivecoverage＝Seffectivecoverage/SallX 100%, obtaining the total coverage efficiency of all the structured base stations in the target area, wherein ReffectivecoverageFor coverage efficiency of structured base stations, SeffectivecoverageCovering the target area with the number of valid sampling points, SallThe total number of sampling points in the target area.
The analyzed drive test data refers to drive test data of a target area screened from drive test data collected in a drive test area, and the drive test data of the target area can be stored according to a required rule, and the storage form of the analyzed drive test data is not limited in the embodiment of the present invention, for example, the analyzed drive test data can be made into a form of a table, as shown in table 2:
the drive test dt (drive test) data is network data such as the level and the reference signal received power of the serving cell and the neighboring cell adjacent to the serving cell, which are acquired by a drive test instrument after the serving cell is determined, and mainly obtains the signal strength and the service quality of each sampling point of the serving cell within a certain time, the signal strength and the service quality of each sampling point of the neighboring cell within a certain time, wherein access and mobility related signaling processes (reselection, handover, redirection), a cell identification code and the like.
Each sampling point corresponds to one service cell and a plurality of adjacent cells. Each sampling point may sample the signal strength of the serving cell it serves and the signal strength of cells neighboring its serving cell during the time of the move.
For the specific way of counting the number of covered effective sampling points of the target region in S1042, the embodiment of the present invention does not limit this way, and may exemplarily perform the following steps:
because the identification information of each cell in the drive test area can be obtained from the drive test data, whether the cell is a cell in the target area can be judged through the identification information of the cell, the cell is a cell covered by the structured base station, the cell covered by the structured base station is screened out from the drive test data according to the identification information, for example, as shown in table 2, the PCI of the serving cell of any sampling point is obtained from table 2, whether the PCI exists in the base station list of table 1 is judged, if the PCI exists, the serving cell which takes the cell as the sampling point for sampling is a cell covered by the structured base station, and the number S of sampling points with the signal intensity being more than or equal to the preset signal intensity in the number of the sampling points with the cell as the serving cell is countedervAnd the number S of sampling points which do not satisfy the condition that the serving cell is a structured base station lower cell and the signal intensity is greater than or equal to the preset signal intensity but at least one adjacent cell is a structured base station lower cell and the signal intensity is greater than or equal to the preset signal intensitynbrAdding S to the number of coverage effective samples of all cells belonging to the structured base station listed in Table 2effectivecoverage＝Sserv+SnbrI.e. the number of covered effective sampling points.
The preset signal strength of the embodiment of the invention is-105 dBm.
Illustratively, the drive test data analysis table further includes a longitude and a latitude of each serving cell and a sampling time of each sampling point, as shown in fig. 2, the analyzed drive test data further includes a sampling time of each sampling point and sampling geographical location information, the geographical location information includes a longitude and a latitude, and the obtaining of the number of coverage effective sampling points of the target area may be implemented as steps S10421A-S10421D:
S10421A, acquiring identification information of each cell in the drive test area;
S10421B, if there is identification information corresponding to all cells covered by the structured base station that is the same as identification information of any one of the cells in the routing area except the cell covered by the structured base station, acquiring all the cells with the same identification information;
S10421C, according to the analyzed drive test data and the engineering parameters, determining whether a serving cell is a sampling point where the structured base station with the same identification information covers a lower cell and the signal strength is greater than or equal to a preset signal strength, and a cell which does not satisfy the condition that the serving cell is a structured base station lower cell and the signal strength is greater than or equal to the preset signal strength but the signal strength of an adjacent cell is greater than or equal to the preset signal strength and the adjacent cells are all the sampling points of the structured base station lower cell with the same identification information are coverage effective sampling points of the cell covered by the structured base station in the target region;
S10421D, if the serving cell is a cell under the coverage of the structured base station with the same identification information and the sampling point with the signal strength larger than or equal to the preset signal strength and the sampling point which does not satisfy the condition that the serving cell is a cell under the structured base station and the signal strength larger than or equal to the preset signal strength but has the signal strength larger than or equal to the preset signal strength of the adjacent cell and the adjacent cell is the cell under the structured base station with the same identification information is not a coverage effective sampling point of the cell covered by the structured base station in the target area, removing the number of the sampling points from the number of coverage effective sampling points of the structured base station covering all the cells.
Since one serving cell has multiple neighboring cells, and multiple serving cells may be neighboring cells to each other, and the neighboring cells of two or more serving cells partially overlap, for example, for serving cell a, serving cell B, and serving cell C, cells N1, N2, and N3 are neighboring cells of serving cell a, cell N2 is a neighboring cell of serving cell B, and N1 and N3 are neighboring cells of serving cell C, when serving cell a, serving cell B, serving cell C, and cells N1, N2, and N3 are all cells covered by a structured base station in a target area, and the signal strength is greater than or equal to-105 dBm, there may be a case where one sampling point is calculated multiple times, and therefore, the sampling point may be performed by using the same sampling point, and if the sampling points have the same testing time, longitude, and latitude, only once.
The specific way of obtaining the total sampling point number of the target area is not limited in the embodiment of the present invention, and as shown in fig. 3, S10422A-S10422C may be implemented in the following way:
S10422A, obtaining total sampling point number S of the drive test areatotalThe total number of sampling points StotalThe sum of the sampling points of each sampling point in the drive test area is obtained;
S10422B, if the drive test area is larger than the target area, acquiring the number S of sampling points of which the service cell is a base station lower cell in an area except the target area in the drive test area and the signal intensity is larger than or equal to the preset signal intensityother；
S10422C, counting S according to total sampling points of the drive test areatotalAnd the service cell is a sampling point number S of a base station lower cell in an area except the target area in the road measurement area, and the signal intensity is more than or equal to the preset signal intensityotherObtaining the total sampling point number S of the target areaall。
In order to improve the testing precision and avoid that the same sampling point is repeatedly calculated, and when the total sampling point number is obtained, duplication can be removed in the above manner, and the embodiment of the invention is not described herein again.
The method further comprises the following steps: if the total coverage effective rate of all the structured base stations in the target area is smaller than a preset coverage rate, adjusting the first preset value coefficient threshold to be a second preset value coefficient threshold;
re-determining all the structured base stations in the target area, wherein the cost coefficient of at least one cell covered by each re-determined structured base station is greater than or equal to a second preset cost coefficient threshold;
and calculating the total coverage effective rate of all the structural base stations in the re-determined target area until the total coverage effective rate of all the structural base stations in the target area is greater than or equal to the preset coverage rate.
In the embodiment of the present invention, the preset coverage is 95%, that is, when (the number of coverage effective sampling points of all the structured base stations in the target area ÷ the number of total sampling points in the target area) × 100% ≧ 95%, the total coverage of all the structured base stations in the target area is effective. Of course, the specific value of the preset coverage may also be selected according to actual needs, the preset coverage may be set according to parameters such as call quality, handover rate, and interference performance that need to be achieved, when the requirement for the coverage in the target area is not high, the value of the preset coverage may be set to be lower, and the preset coverage may be set by Reference Signal Receiving Power (RSRP) of the structured base station.
As shown in fig. 4, an embodiment of the present invention further provides an LTE network base station coverage validity evaluation apparatus, where each functional unit in the LTE network base station coverage validity evaluation apparatus corresponds to the LTE network base station coverage validity evaluation method in the foregoing embodiment of the present invention, and reference may be specifically made to the description of the foregoing embodiment of the present invention, and details of the embodiment of the present invention are not repeated here. As shown in fig. 4, the LTE network base station coverage validity evaluation apparatus 40 includes:
an obtaining unit 401, configured to obtain an engineering parameter of each base station in a drive test area at least including a target area, and network data information of each cell in a base station coverage area co-located with the 3G base station; wherein the network data information of each cell comprises the data traffic volume and the overlapping coverage coefficient of the 3G cell;
a first calculating unit 402, configured to calculate, according to the data traffic and an overlapping coverage coefficient, a value coefficient of each cell within a coverage area of each base station in the target area;
a first determining unit 403, configured to determine all structured base stations in the target area according to a cost coefficient of each cell in a coverage area of each base station in the target area, where the cost coefficient of at least one cell covered by the structured base station is greater than or equal to a first preset cost coefficient threshold;
a second calculating unit 404, configured to calculate a total coverage effective rate of all the structured base stations in the target area after the first determining unit determines all the structured base stations in the target area;
a determining unit 405, configured to determine whether a total coverage effective rate of all structured base stations in the target area is greater than or equal to a preset coverage rate;
a determining unit 406, configured to determine that the structured base stations in the target area meet the coverage requirement after the determining unit determines that the total coverage efficiency of all the structured base stations in the target area is greater than or equal to a preset coverage rate.
The first calculating unit 402 and the second calculating unit 404 may be the same calculating unit, and the calculating unit has the functions of the first calculating unit 402 and the second calculating unit 404.
As shown in fig. 5, the second calculating unit 404 includes:
an obtaining module 4041, configured to analyze the drive test data to obtain analyzed drive test data, where the analyzed drive test data includes identification information of a serving cell, signal strength of the serving cell, identification information of a neighboring cell, and signal strength of the neighboring cell, where the identification information may be a cell identification (CEDD-ID) or a Physical Cell Identification (PCI), and the identification information corresponds to each sampling point;
a counting module 4042, configured to count a number of coverage effective sampling points and a total number of sampling points of the target area according to the analyzed drive test data, where the number of coverage effective sampling points includes a sum of a number of sampling points for which a serving cell is a structured base station coverage lower cell and for which signal strength is greater than or equal to a preset signal strength, and a number of sampling points for which the serving cell is not satisfied and for which the serving cell is a structured base station lower cell and for which signal strength is greater than or equal to the preset signal strength, but a neighboring cell is a structured base station lower cell and for which signal strength is greater than or equal to the preset signal strength;
a calculating module 4043 for calculating according to the formula Reffectivecoverage＝Seffectivecoverage/SallX 100%, obtaining the total coverage efficiency of all the structured base stations in the target area, wherein ReffectivecoverageFor coverage efficiency of structured base stations, SeffectivecoverageCovering the target area with the number of valid sampling points, SallThe total number of sampling points in the target area.
Optionally, the statistical module 4042 is specifically configured to:
acquiring the total sampling point number S of the drive test areatotalThe total number of sampling points StotalThe sum of the sampling points of each sampling point in the drive test area is obtained;
if the drive test area is larger than the target area, acquiring the number S of sampling points of which the service cell is a base station lower cell in an area except the target area in the drive test area and the signal intensity is larger than or equal to the preset signal intensityother；
According to the total sampling point number S of the drive test areatotalAnd the service cell is a sampling point number S of a base station lower cell in an area except the target area in the road measurement area, and the signal intensity is more than or equal to the preset signal intensityotherObtaining the total sampling point number S of the target areaall。
Further optionally, the drive test data analysis table further includes longitude and latitude of each sampling point and sampling time, and the statistical module is further specifically configured to:
acquiring identification information of each cell in the drive test area;
if the identification information corresponding to all the cells covered by the structured base station is the same as the identification information of any one of the cells in the route measurement area except the cells covered by the structured base station, acquiring all the cells with the same identification information;
judging whether a serving cell is a sampling point of a cell covered by the structured base station with the same identification information and the signal intensity of which is greater than or equal to the preset signal intensity and a sampling point of a cell not meeting the condition that the serving cell is the cell covered by the structured base station with the same identification information and the signal intensity of which is greater than or equal to the preset signal intensity but the signal intensity of which is greater than or equal to the preset signal intensity of which is adjacent cells and the sampling point of which is the cell covered by the structured base station in the target area are the sampling points of the cell not meeting the condition that the serving cell is the cell covered by the structured base station with the same identification information and;
if the service cell is a sampling point which is covered by the structural base station with the same identification information and has signal strength more than or equal to the preset signal strength and the service cell is not the structural base station, and the signal strength more than or equal to the preset signal strength but has the signal strength more than or equal to the preset signal strength of the adjacent cell, and the adjacent cell is the structural base station with the same identification information, the sampling point of the cell is not the coverage effective sampling point of the cell covered by the structural base station in the road test area, and the sampling point number of the sampling point is removed from the coverage effective sampling point number of the structural base station covering all the cells.
Optionally, the first calculating unit 402 is specifically configured to:
acquiring data traffic and an overlapping coverage coefficient of the first cell;
according to formula Xvalue＝T3G/XoverlapCalculating a cost coefficient for the first cell, wherein XvalueAs a value coefficient, T3GIs the data traffic of the first cell, XoverlapIs the overlapping coverage coefficient of the first cell.
Further optional coverage validity evaluation apparatus 40 for the LTE network base station further includes an adjusting unit 407, a second determining unit 408, and a third calculating unit 409;
the adjusting unit 407 is configured to adjust the first preset cost coefficient threshold to a second preset cost coefficient threshold when the determining unit 406 determines that the total coverage effective rate of all the structured base stations in the target area is smaller than a preset coverage rate;
a second determining unit 408, configured to re-determine all structured base stations in the target area after the adjusting unit 407 adjusts the first preset cost coefficient threshold to a second preset cost coefficient threshold, where a cost coefficient of at least one cell covered by each re-determined structured base station is greater than or equal to the second preset cost coefficient threshold;
a third calculating unit 409, configured to calculate, after the second determining unit 408 re-determines all the structured base stations in the target area, a total coverage effective rate of all the structured base stations in the re-determined target area, and invoke the determining unit and the adjusting unit until the total coverage effective rate of all the structured base stations in the target area is greater than or equal to the preset coverage rate.
In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may be physically included alone, or two or more units may be integrated into one unit. The integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.
The integrated unit implemented in the form of a software functional unit may be stored in a computer readable storage medium. The software functional unit is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute some steps of the methods according to the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (8)

1. An LTE network base station coverage effectiveness evaluation method is characterized by comprising the following steps:
acquiring engineering parameters of each base station in a drive test area at least comprising a target area and network data information of each 3G cell in a 3G base station coverage range constructed in the same address with the base station; wherein the network data information of each cell comprises the data traffic volume and the overlapping coverage coefficient of the 3G cell;
calculating a value coefficient of each cell in the coverage range of each base station in the target area according to the data traffic and the overlapping coverage coefficient;
determining all structured base stations in the target area according to the value coefficient of each cell in the coverage range of each base station in the target area, wherein the value coefficient of at least one cell covered by the structured base stations is greater than or equal to a first preset value coefficient threshold;
calculating the total coverage effective rate of all the structured base stations in the target area;
if the total coverage efficiency of all the structured base stations in the target area is greater than or equal to a preset coverage rate, determining that the structured base stations in the target area meet the coverage requirement;
the calculating the total coverage effective rate of all the structured base stations in the target area comprises:
analyzing the drive test data to obtain analyzed drive test data, wherein the analyzed drive test data comprises identification information of a service cell corresponding to each sampling point, signal intensity of each service cell, identification information of each adjacent cell and signal intensity of each adjacent cell;
counting the number of covered effective sampling points and the number of total sampling points of the target area according to the analyzed drive test data, wherein the number of covered effective sampling points comprises the sum of the number of sampling points of which the service cell is a structured base station covered cell and the signal intensity is greater than or equal to the preset signal intensity and the number of sampling points of which the service cell is not satisfied as the structured base station covered cell and the signal intensity is greater than or equal to the preset signal intensity but at least one adjacent cell is the structured base station covered cell and the signal intensity is greater than or equal to the preset signal intensity;
according to the formula Reffectivecoverage＝Seffectivecoverage/SallX 100%, obtaining the total coverage efficiency of all the structured base stations in the target area, wherein ReffectivecoverageFor coverage efficiency of structured base stations, SeffectivecoverageCovering the target area with the number of valid sampling points, SallThe total sampling point number in the target area is taken as the total sampling point number;
for a first base station, the first base station is any one base station in the target area, for a first cell, the first cell is any one cell covered by the first base station, and the calculating a cost coefficient of each cell covered by each base station in the target area according to the data traffic and an overlapping coverage coefficient includes:
acquiring data traffic and an overlapping coverage coefficient of the first cell;
according to formula Xvalue＝T3G/XoverlapCalculating a cost coefficient for the first cell, wherein XvalueAs a value coefficient, T3GIs the data traffic of the first cell, XoverlapIs the overlapping coverage coefficient of the first cell.
2. The method of claim 1, wherein the obtaining the total number of sampling points of the target area comprises:
acquiring the total sampling point number S of the drive test areatotalThe total number of sampling points StotalThe sum of the sampling points of each sampling point in the drive test area is obtained;
if the drive test area is larger than the target area, acquiring the number S of sampling points of which the service cell is a base station lower cell in an area except the target area in the drive test area and the signal intensity is larger than or equal to the preset signal intensityother；
According to the total sampling point number S of the drive test areatotalAnd the service cell is a sampling point number S of a base station lower cell in an area except the target area in the road measurement area, and the signal intensity of the sampling point number S is more than or equal to the preset signal intensityotherObtaining the total sampling point number S of the target areaall。
3. The method according to claim 1 or 2, wherein the parsed drive test data further includes sampling time and sampling geographic location information of each sampling point, and the obtaining of the number of covered effective sampling points of the target area includes:
acquiring identification information of each cell in the drive test area;
if the identification information corresponding to all the cells covered by the structured base station is the same as the identification information of any one of the cells in the route measurement area except the cells covered by the structured base station, acquiring all the cells with the same identification information;
judging whether a serving cell is a sampling point which is covered by the structured base station with the same identification information and has signal intensity larger than or equal to the preset signal intensity and a sampling point which is not satisfied that the serving cell is the structured base station and has signal intensity larger than or equal to the preset signal intensity but has adjacent cell signal intensity larger than or equal to the preset signal intensity and the adjacent cells are the sampling points which are covered by the structured base station in the target area or not according to the analyzed drive test data and the engineering parameters;
if the service cell is a cell under the structured base station with the same identification information and the sampling point with the signal intensity larger than or equal to the preset signal intensity and the sampling point which does not meet the condition that the service cell is a cell under the structured base station and the signal intensity is larger than or equal to the preset signal intensity but the sampling point of the cell under the structured base station with the same identification information and the adjacent cell with the signal intensity larger than or equal to the preset signal intensity is not the coverage effective sampling point of the cell covered by the structured base station in the target area, the sampling points are removed from the coverage effective sampling points of the structured base station covering all the cells.
4. The method of claim 1, further comprising: if the total coverage effective rate of all the structured base stations in the target area is smaller than a preset coverage rate, adjusting the first preset value coefficient threshold to be a second preset value coefficient threshold;
re-determining all the structured base stations in the target area, wherein the cost coefficient of at least one cell covered by each re-determined structured base station is greater than or equal to a second preset cost coefficient threshold;
and calculating the total coverage effective rate of all the structural base stations in the re-determined target area until the total coverage effective rate of all the structural base stations in the target area is greater than or equal to the preset coverage rate.
5. An LTE network base station coverage validity assessment device, comprising:
the system comprises an acquisition unit, a processing unit and a processing unit, wherein the acquisition unit is used for acquiring engineering parameters of each base station in a drive test area at least comprising a target area and network data information of each 3G cell in a 3G base station coverage range constructed by the same address as the base station; wherein the network data information of each cell comprises the data traffic volume and the overlapping coverage coefficient of the 3G cell;
a first calculating unit, configured to calculate, according to the data traffic and an overlapping coverage coefficient, a value coefficient of each cell in a coverage area of each base station in the target area;
a first determining unit, configured to determine all structured base stations in the target area according to a cost coefficient of each cell in a coverage area of each base station in the target area, where the cost coefficient of at least one cell covered by the structured base station is greater than or equal to a first preset cost coefficient threshold;
a second calculating unit, configured to calculate a total coverage effective rate of all the structured base stations in the target area after the first determining unit determines all the structured base stations in the target area;
a judging unit, configured to judge whether a total coverage effective rate of all structured base stations in the target area is greater than or equal to a preset coverage rate;
the judging unit is used for judging that the structured base stations in the target area meet the coverage requirement after the judging unit determines that the total coverage efficiency of all the structured base stations in the target area is greater than or equal to the preset coverage rate; the second calculation unit includes:
the acquisition module is used for analyzing the drive test data to acquire analyzed drive test data, wherein the analyzed drive test data comprises identification information of a serving cell, signal intensity of the serving cell, identification information of a neighboring cell and signal intensity of the neighboring cell, which correspond to each sampling point;
a counting module, configured to count a number of coverage effective sampling points and a total number of sampling points of the target area according to the analyzed drive test data, where the number of coverage effective sampling points includes a sum of a number of sampling points for which a serving cell is a structured base station coverage lower cell and for which signal strength is greater than or equal to a preset signal strength, and a number of sampling points for which the serving cell is not satisfied and for which the serving cell is a structured base station lower cell and for which signal strength is greater than or equal to the preset signal strength but for which at least one neighboring cell exists and is a structured base station lower cell and for which signal strength is greater than or equal to the preset signal strength;
a calculation module for calculating according to formula Reffectivecoverage＝Seffectivecoverage/SallX 100%, obtaining the total coverage efficiency of all the structured base stations in the target area, wherein ReffectivecoverageFor coverage efficiency of structured base stations, SeffectivecoverageCovering the target area with the number of valid sampling points, SallThe total sampling point number in the target area is taken as the total sampling point number;
the first computing unit is specifically configured to:
acquiring data traffic and an overlapping coverage coefficient of a first cell;
according to formula Xvalue＝T3G/XoverlapCalculating a cost coefficient for the first cell, wherein XvalueAs a value coefficient, T3GIs the data traffic of the first cell, XoverlapIs the overlapping coverage coefficient of the first cell.
6. The apparatus of claim 5, wherein the statistics module is specifically configured to:
acquiring the total sampling point number S of the drive test areatotalThe total number of sampling points StotalThe sum of the sampling points of each sampling point in the drive test area is obtained;
if the drive test area is larger than the target area, acquiring the number S of sampling points of which the service cell is a base station lower cell in an area except the target area in the drive test area and the signal intensity is larger than or equal to the preset signal intensityother；
According to the total sampling point number S of the drive test areatotalAnd the service cell is a base station lower cell in an area except the target area in the road measurement area andnumber of sampling points S with signal intensity greater than or equal to preset signal intensityotherObtaining the total sampling point number S of the target areaall。
7. The apparatus according to claim 5 or 6, wherein the parsed drive test data further includes sampling time and geographical location information of each of the sampling points, and the statistical module is further specifically configured to:
acquiring identification information of each cell in the drive test area;
if the identification information corresponding to all the cells covered by the structured base station is the same as the identification information of any one of the cells in the route measurement area except the cells covered by the structured base station, acquiring all the cells with the same identification information;
judging whether a serving cell is a sampling point which is covered by the structured base station with the same identification information and has signal intensity larger than or equal to the preset signal intensity and a sampling point which is not satisfied that the serving cell is the structured base station and has signal intensity larger than or equal to the preset signal intensity but has adjacent cell signal intensity larger than or equal to the preset signal intensity and the adjacent cells are the sampling points which are covered by the structured base station in the target area or not according to the analyzed drive test data and the engineering parameters;
if the service cell is a cell under the structured base station with the same identification information and the sampling point with the signal intensity larger than or equal to the preset signal intensity and the sampling point which does not meet the condition that the service cell is a cell under the structured base station and the signal intensity is larger than or equal to the preset signal intensity but the sampling point of the cell under the structured base station with the same identification information and the adjacent cell with the signal intensity larger than or equal to the preset signal intensity is not the coverage effective sampling point of the cell covered by the structured base station in the target area, the sampling points are removed from the coverage effective sampling points of the structured base station covering all the cells.
8. The apparatus of claim 5, further comprising an adjustment unit, a second determination unit, and a third calculation unit;
the adjusting unit is configured to adjust the first preset cost coefficient threshold to a second preset cost coefficient threshold when the determining unit determines that the total coverage effective rate of all the structured base stations in the target area is smaller than a preset coverage rate;
a second determining unit, configured to re-determine all structured base stations in the target area after the adjusting unit adjusts the first preset cost coefficient threshold to a second preset cost coefficient threshold, where a cost coefficient of at least one cell covered by each re-determined structured base station is greater than or equal to the second preset cost coefficient threshold;
and a third calculating unit, configured to calculate, after the second determining unit re-determines all the structured base stations in the target area, a total coverage effective rate of all the structured base stations in the re-determined target area until the total coverage efficiency of all the structured base stations in the target area is greater than or equal to the preset coverage rate.
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