CN102572858B - Method and device for automatically detecting network weak coverage - Google Patents
Method and device for automatically detecting network weak coverage Download PDFInfo
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- CN102572858B CN102572858B CN201210035523.0A CN201210035523A CN102572858B CN 102572858 B CN102572858 B CN 102572858B CN 201210035523 A CN201210035523 A CN 201210035523A CN 102572858 B CN102572858 B CN 102572858B
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Abstract
The invention discloses a method and a device for automatically detecting network weak coverage. The method comprise the steps that a survey report reported by a terminal to a base station is obtained, and received power of the terminal is analyzed from the survey report; the distance between the terminal and the corresponding base station is calculated according to the analyzed received powder of the terminal; the terminal received power on the distance between the base station and the terminal in an angle direction is calculated according to a preset angle step value within a set angle range by using a direction angle direction of an antenna of the base station as a start; and position coordinates of the terminal are located according to the calculated terminal received power and the received power analyzed from the survey report; and a network weak coverage detection result is obtained and output according to the position coordinates of the terminal.
Description
Technical field
The present invention relates to communication technical field, particularly relate to weak automatic testing method and the device of covering of a kind of network.
Background technology
At TD-SCDMA (Time Division-Synchronous Code Division Multiple Access, TD SDMA) after networking completes, because the difference of actual conditions and planning is led, the factors such as variation of site can cause network to occur weak situation about covering.Weak covering refers to that base station spacing is excessive because the required area coverage in base station is large, or building blocks and the weak situation of borderline region signal that causes, conventionally during be less than-90dBm of terminal received power, thinks weak covering, as shown in Figure 1.Weak overlay area not only affects Internet phone-calling quality, and easily causes call drop, causes the low series of problems that waits of page response rate.Therefore, how in existing network, accurately to find out weak overlay area or weak covering point in network, and then real-time optimization scheme, become the key of the network optimization.
As shown in Figure 2, the weak overlay area of network or weak covering point cannot detect monitoring automatically at present, can only be by network optimization personnel draw in the net drive test, client's complaint feedback or to network KPI (Key Performance Indicator, KPI Key Performance Indicator) analysis is pinpointed the problems, then for the website of problem area, analyze, tentatively judge, after remover apparatus failure factor, problem area is carried out to repetition measurement, be confirmed whether weak covering.
Yet in existing Sampling network mainly there is following shortcoming in the scheme of weak overlay area or weak covering point:
Draw in the net drive test manpower and the time a large amount of because needs drop into and test, and be subject to the restriction of route or travel by vehicle, be difficult to accomplish the complete detection to whole net.
The method of customer complaint feedback has hysteresis quality aspect the time, after receiving customer complaint, also need network optimization personnel according to complaining place further to test and could confirm, this method is inefficiency not only, and owing to having had influence on terminal use's perception, to operator, bring very large risk.
Daily network KPI analyzes and need to arrange special messenger to analyze the index of the whole network, according to the analysis of a series of data such as TOP community (doubtful community) and relevant alarm, be confirmed whether to exist covering problem and carry out repetition measurement and could finally confirm, personnel's technical ability is had relatively high expectations.
Also there is no at present the weak scheme covering of a kind of automatic Sampling network in order to address the above problem.
Summary of the invention
The embodiment of the present invention provides a kind of network weak automatic testing method and the device of covering, in order to solve in prior art detection range not comprehensively, inefficiency and personnel's technical ability is required to high problem.
The weak automatic testing method that covers of network that the embodiment of the present invention provides, comprises the following steps:
Obtain terminal to report to the measurement report of base station, from described measurement report, parse the received power of described terminal;
According to the received power of the described terminal parsing, calculate the distance between described terminal and corresponding base station;
Take the antenna direction angular direction of described base station as initial, within the scope of set angle, according to default angle step value, calculate along each angle direction, terminal received power in the distance between described base station and described terminal;
According to the terminal received power calculating and the received power parsing, locate the position coordinates of described terminal from measurement report;
According to the position coordinates of described terminal, obtain the weak testing result that covers of network and also export.
The embodiment of the present invention also provides a kind of network the weak automatic detection device that covers, and comprising:
Acquisition module, for obtaining terminal to report to the measurement report of base station;
Parsing module, parses the received power of described terminal for the terminal to report getting from described acquisition module to the measurement report of base station;
Computing module, received power for the terminal that parses according to described parsing module is calculated the distance between described terminal and corresponding base station, and take the antenna direction angular direction of described base station as initial, within the scope of set angle, according to default angle step value, calculate along each angle direction, terminal received power in the distance between described base station and described terminal;
Matching module, for the terminal received power calculating according to described computing module and the received power parsing from described parsing module, locates the position coordinates of described terminal;
Output module, for the position coordinates of the terminal that obtains according to described matching module, obtains that network is weak covers testing result output.
Compared with prior art, the above embodiment of the present invention has following useful technique effect:
The embodiment of the present invention is by parsing the received power of terminal the measurement report to base station from terminal to report, and take the deflection direction of this antenna for base station as initial, within the scope of set angle, according to default angle step value, calculating is along each angle direction, terminal received power in the distance between described base station and described terminal, therefrom find the power mating most with the received power parsing from measurement report, obtain the position coordinates of this terminal, thereby obtaining the weak testing result that covers of network also exports, realize the weak automatic detection covering of network, active maintenance network quality, there is the weak comprehensive and high efficiency automatically detecting that covers of network, and saved human cost.
Accompanying drawing explanation
Fig. 1 is the weak schematic diagram that covers of network;
Fig. 2 is the weak schematic flow sheet covering of prior art Sampling network;
A little less than the network that Fig. 3 provides by the embodiment of the present invention, cover the applicable network architecture schematic diagram of automatic testing method;
A little less than the network that Fig. 4 provides for the embodiment of the present invention, cover automatic testing process schematic diagram;
The calculating that Fig. 5 provides for the embodiment of the present invention is along the schematic flow sheet of each angle direction, terminal received power in the distance between base station and terminal;
A little less than the network that Fig. 6 provides for the embodiment of the present invention, cover the structural representation of automatic detection device.
Embodiment
The embodiment of the present invention switches by resolving 2-3G the 3a measurement report that in TOP community, terminal sends to base station, obtain terminal in the received power of switching each adjacent area of pre-test acquisition, in conjunction with the distance between three-dimensional map and propagation model computing terminal and corresponding base station, and take the antenna direction angular direction of base station as initial, within the scope of set angle, according to angle step value, calculate along each angle direction, terminal received power in the distance between base station and terminal, from the terminal received power calculating, find out the power mating most with the received power parsing, and the position coordinates of locating terminal on this basis, thereby obtain the weak testing result that covers of network, and the weak testing result that covers of this network is shown to user on three-dimensional map.
The embodiment of the present invention goes for TD-SCDMA communication system, also go for other wireless communication systems, for example, WCDMA (Wideband Code Division Multiple Access, Wideband Code Division Multiple Access (WCDMA)), CDMA2000 (Code Division Multiple Access 2000), LTE (Long Term Evolution, Long Term Evolution) etc.
Below in conjunction with the accompanying drawing in the present invention, the technical scheme in the present invention is carried out to clear, complete description, obviously, described embodiment is a part of embodiment of the present invention, rather than whole embodiment.Embodiment based in the present invention, the every other embodiment that those of ordinary skills obtain under the prerequisite of not making creative work, belongs to the scope of protection of the invention.
As shown in Figure 3, the weak applicable network architecture of automatic testing method that covers of network that the embodiment of the present invention provides comprises: weak automatic detection device, base station and the terminal of covering of network.A little less than terminal is positioned at network, during overlay area, can send to base station 3a measurement report, the weak automatic detection device that covers of network can obtain this measurement report, carries out the weak automatic detection covering of network.The weak automatic detection device that covers of network is for parsing received power from measurement report, according to the engineering parameters such as antenna for base station deflection, community three-dimensional map, propagation model and angle step value, calculate the terminal received power in each angle, in the distance between base station and terminal, find out the terminal received power of mating most with the immediate received power of the terminal parsing, and determine corresponding terminal location coordinate, thereby obtain the weak testing result that covers of network.The weak automatic detection device that covers of network can be arranged in operation maintenance center, also can arrange separately.
The weak covering on automatic detection device of network stores community three-dimensional map, propagation model and correlation engineering parameter.
Wherein, correlation engineering parameter comprises: the relevant parameter in the deflection of antenna for base station, link budget parameter and propagation model (for example: base station transmitting power PTX, base station equivalent aerial height H eff, at gain Kclutter, the mean error Korientation that receives direction, the terminal equivalent aerial height H meff that are blocked diffraction loss Diffraction on path, bring at the type of ground objects of terminal location).
User can set the neighbor cell quantity for measuring, and selects the number of the adjacent area of participation calculating, and the adjacent area number that participates in calculating is more, and computational accuracy is higher, and amount of calculation is also larger relatively, and for guaranteeing basic required precision, this parameter is at least 3.
User can also set the angle step value for mating, the angle step of using while being computing terminal received power, for example, if angle step value is 1, in the scope of 0-180 degree, just need to be to every direction calculating terminal received power once, angle step value is larger, and the number of times of calculative terminal received power is fewer.
As shown in Figure 4, a little less than the network providing for the embodiment of the present invention, cover automatic testing process schematic diagram, the method comprises the following steps:
Step 41, the weak automatic detection device that covers of network obtains terminal to report to the measurement report of base station, parses the received power of terminal from measurement report.
Concrete, if switch in TOP community at 2-3G, during be less than-90dBm of the received power of terminal, can send 3a measurement report to cell base station, illustrate that this terminal is positioned at the weak overlay area of network, the weak automatic detection device that covers of network obtains this measurement report, and therefrom parses terminal at the received power RSCP (Received Signal Code Power) that switches pre-test acquisition.
Step 42, the weak automatic detection device that covers of network is according to the distance between the received power computing terminal of terminal and corresponding base station.
Concrete, the weak automatic detection device that covers of network obtains the distance between terminal and corresponding base station according to propagation model, and propagation model formula is:
P
RX＝P
TX+K
1+K
2lgd+K
3lg(H
eff)+K
4Diffraction
+K
5lg(H
eff)lgd+K
6(H
meff)+K
clutter+K
orientation；
Wherein, P
tXfor transmitting power; P
rXfor received power; K
1for constant skew; K
2for and base station and terminal between the slope factor of Range-based; K
3for lg (H
eff) take advantage of sex factor, the gain of compensation base station antenna height; K
4the sex factor of taking advantage of for diffraction loss; K
5for lg (H
eff) lgd take advantage of sex factor; K
6correction factor for terminal antenna height gain; D is the distance that terminal is arrived in base station; H
efffor base station equivalent aerial height; Diffraction is at the diffraction loss being blocked on path; K
clutterthe related gain of bringing for the type of ground objects at terminal location; K
orientationmean error for street direction; H
mefffor terminal equivalent aerial height.
In this propagation model formula, only having terminal is unknown quantity to the distance d of corresponding base station, and other parameters are known, can calculate base station to the distance d of terminal according to this formula.
Step 43, network is weak to be covered automatic detection device and take the antenna direction angular direction of base station as initial, within the scope of set angle, according to default angle step value, calculates along each angle direction, terminal received power in the distance between base station and terminal.
Concrete, as shown in Figure 5, calculate along each angle direction, in the distance between base station and terminal, the flow process of terminal received power comprises the following steps:
Step 431, the distance d that the deflection direction of antenna of base station of take is initial, base station and terminal is radius, forms semicircle overlay area.
Step 432 in this semicircle overlay area, according to default angle step value, three-dimensional map and link budget parameter, is calculated the base station transmitting power loss in distance between base station and terminal in each angle.
Step 433, deducts power loss by base station transmitting power, obtains along each angle direction, terminal received power in distance between base station and terminal.
For example, the deflection direction of cell-site antenna is 30 degree angle directions, take this 30 degree angle as initial, apart from d, be radius, form semicircle overlay area.If the angle step value that user selects is 5 degree, in this semicircle overlay area, every 5 degree, calculate respectively in the power loss apart from d.If known according to three-dimensional map, have a width on original position 120 degree direction paths, be the building of 30m, if link budget parameter is 0.1dBm/m, the power loss on this building is 3dBm.If the transmitting power of cell base station is 30dBm, can calculate along 120 angle directions, terminal received power on distance d between base station and terminal is 30dBm-3dBm=27dBm.
Step 44, the weak automatic detection device that covers of network is according to the terminal received power calculating and the received power parsing from measurement report, the position coordinates of locating terminal.
Concrete, the weak automatic detection device that covers of network is found out the power mating most with the received power parsing from the terminal received power calculating, and determines the transmission path of this terminal received power and the angle between antenna for base station deflection.Then according to the angle between the transmission path of the position coordinates of base station, this terminal received power and antenna for base station deflection and the distance d between base station and terminal, obtain the position coordinates of this terminal.
Step 45, the weak automatic detection device that covers of network is according to the number of cells of measuring of user's setting, according to the method for step 41-44, in neighbor cell, obtain respectively the position coordinates of this terminal, and each terminal location coordinate obtaining is averaged, obtain the position coordinates of described terminal.
Concrete, the 3a measurement report sending from terminal to base station, can parse the power that this terminal receives from a plurality of neighbor cell base station, the weak automatic detection device that covers of network can therefrom be chosen the community for calculating according to the number of cells of measuring of user's setting.Distance in the community of choosing between difference computing terminal and corresponding base station, for each base station corresponding to received power, take the antenna direction angular direction of base station as initial, within the scope of set angle, according to default angle step value, calculate along each angle direction, terminal received power in the distance between base station and terminal.The received power receiving from corresponding base station according to the terminal received power calculating and the terminal that parses from measurement report, determines respectively the position coordinates of terminal, and each position coordinates of described terminal is averaged, and obtains the position coordinates of described terminal.
Get a plurality of neighbor cells and detect, obtain respectively the position coordinates of terminal, thereby determine the position coordinates of terminal, the error that can avoid one-time detection to bring, revises single testing result, thereby obtains testing result accurately.
Step 46, the weak covering of network automatic detection device covers testing result by the form of community three-dimensional map a little less than user presents network.
The embodiment of the present invention is by parsing the received power of terminal the measurement report to base station from terminal to report, and take the deflection direction of this antenna for base station as initial, within the scope of set angle, according to default angle step value, calculate described along each angle direction, terminal received power in the distance between described base station and described terminal, therefrom find the power mating most with the received power parsing from measurement report, obtain the position coordinates of this terminal, thereby obtaining the weak testing result that covers of network also exports, realize the weak automatic detection covering of network, active maintenance network quality, there is the weak comprehensive and high efficiency automatically detecting that covers of network, and saved human cost.
Design based on identical, the embodiment of the present invention also provides a kind of network the weak automatic detection device that covers, and as shown in Figure 6, comprising:
Acquisition module 61, for obtaining terminal to report to the measurement report of base station.
Parsing module 62, parses the received power of described terminal for the terminal to report getting from acquisition module 61 to the measurement report of base station.
Computing module 63, for the received power computing terminal of the terminal that parses according to parsing module 62 and the distance between corresponding base station, and take the antenna direction angular direction of base station as initial, within the scope of set angle, according to default angle step value, calculate along each angle direction, terminal received power in the distance between base station and terminal.
Matching module 64, for the terminal received power calculating according to computing module 63 and the received power parsing from parsing module 62, the position coordinates of locating terminal;
Output module 65, for the position coordinates of the terminal that obtains according to matching module 64, obtains that network is weak covers testing result output.
Concrete, parsing module 62, specifically for parsing the power that described terminal receives from least two base stations the measurement report obtaining from acquisition module 61.
Computing module 63, specifically for each received power parsing according to parsing module 62, distance between computing terminal and corresponding base station, and for each base station corresponding to the received power parsing, take the antenna direction angular direction of base station as initial, within the scope of set angle, according to default angle step value, calculate along each angle direction, terminal received power in the distance between base station and terminal.
Matching module 64, the received power that the terminal parsing from measurement report specifically for the terminal received power that calculates according to computing module 63 and parsing module receives from corresponding base station, determine respectively the position coordinates of terminal, each position coordinates to terminal is averaged, and obtains the position coordinates of terminal.
Concrete, computing module 63 specifically for, by following propagation model formula, calculate the distance of described terminal and corresponding base station:
P
RX＝P
TX+K
1+K
2lgd+K
3lg(H
eff)+K
4Diffraction
+K
5lg(H
eff)lgd+K
6(H
meff)+K
clutter+K
orientation；
Wherein, P
tXfor transmitting power; P
rXfor received power; K
1for constant skew; K
2for and base station and terminal between the slope factor of Range-based; K
3for lg (H
eff) take advantage of sex factor, the gain of compensation base station antenna height; K
4the sex factor of taking advantage of for diffraction loss; K
5for lg (H
eff) lgd take advantage of sex factor; K
6correction factor for terminal antenna height gain; D is the distance that terminal is arrived in base station; H
efffor base station equivalent aerial height; Diffration is at the diffraction loss being blocked on path; K
clutterthe related gain of bringing for the type of ground objects at terminal location; K
orientationmean error for street direction; H
mefffor terminal equivalent aerial height.
Concrete, computing module 63, is radius specifically for take the distance that the deflection direction of antenna of base station is initial, base station and terminal, forms semicircle overlay area; And in described region, according to default angle step value, three-dimensional map and link budget parameter, in each angle, calculate the base station transmitting power loss in distance between base station and terminal, the transmitting power of base station is deducted to power loss, obtain along each angle direction, terminal received power in distance between base station and terminal.
Concrete, matching module 64, specifically for finding out the power mating most with the received power parsing the terminal received power from calculating, and the angle between definite this terminal received power transmission path and antenna for base station deflection, and according to the angle between the position coordinates of base station, this terminal received power transmission path and antenna for base station deflection and the distance between base station and terminal, obtain the position coordinates of this terminal.
It will be appreciated by those skilled in the art that the module in the device in embodiment can be distributed in the device of embodiment according to embodiment description, also can carry out respective change and be arranged in the one or more devices that are different from the present embodiment.The module of above-described embodiment can be merged into a module, also can further split into a plurality of submodules.
Through the above description of the embodiments, those skilled in the art can be well understood to the mode that the present invention can add essential general hardware platform by software and realize, and can certainly pass through hardware, but in a lot of situation, the former is better execution mode.Understanding based on such, the part that technical scheme of the present invention contributes to prior art in essence in other words can embody with the form of software product, this computer software product is stored in a storage medium, comprise that some instructions are with so that a station terminal equipment (can be mobile phone, personal computer, server, or the network equipment etc.) carry out the method described in each embodiment of the present invention.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be looked protection scope of the present invention.
Claims (8)
1. the weak automatic testing method that covers of network, is characterized in that, the method comprises:
Obtain terminal to report to the measurement report of base station, from described measurement report, parse the received power of described terminal;
According to the received power of the described terminal parsing, calculate the distance between described terminal and corresponding base station;
Take the antenna direction angular direction of described base station as initial, within the scope of set angle, according to default angle step value, calculate along each angle direction, terminal received power in the distance between described base station and described terminal;
According to the terminal received power calculating and the received power parsing, locate the position coordinates of described terminal from measurement report;
According to the position coordinates of described terminal, obtain the weak testing result that covers of network and also export;
Wherein, the distance between described terminal and corresponding base station, obtains by following propagation model formula:
Wherein, P
tXfor transmitting power; P
rXfor received power; K
1for constant skew; K
2for and base station and terminal between the slope factor of Range-based; K
3for lg (H
eff) take advantage of sex factor, the gain of compensation base station antenna height; K
4the sex factor of taking advantage of for diffraction loss; K
5for lg (H
eff) lgd take advantage of sex factor; K
6correction factor for terminal antenna height gain; D is the distance that terminal is arrived in base station; H
efffor base station equivalent aerial height; Diffractino is at the diffraction loss being blocked on path; K
clutterthe related gain of bringing for the type of ground objects at terminal location; K
orientationmean error for street direction; H
mefffor terminal equivalent aerial height.
2. the method for claim 1, is characterized in that, the received power parsing from described measurement report at least comprises the power that described terminal receives from two base stations;
The received power of the terminal parsing described in described basis is calculated the distance between described terminal and corresponding base station, is specially: according to each received power parsing, calculate the distance between described terminal and corresponding base station respectively;
Described antenna direction angular direction of take base station is as initial, within the scope of set angle, according to default angle step value, calculating is along each angle direction, terminal received power in the distance between described base station and terminal, be specially: for each base station corresponding to the described received power parsing, take the antenna direction angular direction of base station as initial, within the scope of set angle, according to default angle step value, calculate along each angle direction, terminal received power in the distance between described base station and terminal;
The terminal received power that described basis calculates and the received power parsing from measurement report, locate the position coordinates of described terminal, be specially: the received power receiving from corresponding base station according to the terminal received power calculating and the described terminal that parses from measurement report, determine respectively the position coordinates of described terminal, each position coordinates to described terminal is averaged, and obtains the position coordinates of described terminal.
3. method as claimed in claim 1 or 2, is characterized in that, described antenna direction angular direction of take base station is as initial, within the scope of set angle, according to default angle step value, calculate along each angle direction, terminal received power in distance between described base station and terminal, comprising:
The distance that the deflection direction of antenna of base station of take is initial, described base station and terminal is radius, forms semicircle overlay area;
In described region, according to default angle step value, three-dimensional map and link budget parameter, in each angle, calculate the base station transmitting power loss in distance between base station and terminal;
Base station transmitting power is deducted to described power loss, obtain along each angle direction, terminal received power in distance between base station and terminal.
4. method as claimed in claim 1 or 2, is characterized in that, the terminal received power that described basis calculates and the received power parsing from measurement report are located the position coordinates of described terminal, comprising:
From the terminal received power calculating, find out the power mating most with the received power parsing, and determine the transmission path of described terminal received power and the angle between antenna for base station deflection;
According to the angle between the transmission path of the position coordinates of base station, described terminal received power and antenna for base station deflection and the distance between described base station and terminal, obtain the position coordinates of this terminal.
5. the weak automatic detection device that covers of network, is characterized in that, comprising:
Acquisition module, for obtaining terminal to report to the measurement report of base station;
Parsing module, parses the received power of described terminal for the terminal to report getting from described acquisition module to the measurement report of base station;
Computing module, received power for the terminal that parses according to described parsing module is calculated the distance between described terminal and corresponding base station, and take the antenna direction angular direction of described base station as initial, within the scope of set angle, according to default angle step value, calculate along each angle direction, terminal received power in the distance between described base station and described terminal;
Matching module, for the terminal received power calculating according to described computing module and the received power parsing from described parsing module, locates the position coordinates of described terminal;
Output module, for the position coordinates of the terminal that obtains according to described matching module, obtains that network is weak covers testing result output;
Wherein, described computing module specifically for, by following propagation model formula, calculate the distance of described terminal and corresponding base station:
Wherein, P
tXfor transmitting power; P
rXfor received power; K
1for constant skew; K
2for and base station and terminal between the slope factor of Range-based; K
3for lg (H
eff) take advantage of sex factor, the gain of compensation base station antenna height; k
4the sex factor of taking advantage of for diffraction loss; K
5for lg (H
eff) lgd take advantage of sex factor; K
6correction factor for terminal antenna height gain; D is the distance that terminal is arrived in base station; H
efffor base station equivalent aerial height; Diffractino is at the diffraction loss being blocked on path; K
clutterthe related gain of bringing for the type of ground objects at terminal location; K
orientationmean error for street direction; H
mefffor terminal equivalent aerial height.
6. device as claimed in claim 5, is characterized in that,
Described parsing module, specifically for parsing the power that described terminal receives from least two base stations the measurement report obtaining from described acquisition module;
Described computing module, specifically for each received power parsing according to described parsing module, calculate the distance between described terminal and corresponding base station, and for each base station corresponding to the described received power parsing, take the antenna direction angular direction of base station as initial, within the scope of set angle, according to default angle step value, calculate along each angle direction, in the distance between base station and terminal terminal received power;
Described matching module, the received power that the described terminal parsing from measurement report specifically for the terminal received power that calculates according to described computing module and described parsing module receives from corresponding base station, determine respectively the position coordinates of described terminal, each position coordinates to described terminal is averaged, and obtains the position coordinates of described terminal.
7. the device as described in claim 5 or 6, is characterized in that, described computing module is radius specifically for take the distance that the deflection direction of antenna of base station is initial, described base station and terminal, forms semicircle overlay area; And in described region, according to default angle step value, three-dimensional map and link budget parameter, in each angle, calculate the base station transmitting power loss in distance between base station and terminal, base station transmitting power is deducted to described power loss, obtain along each angle direction, terminal received power in distance between base station and terminal.
8. the device as described in claim 5 or 6, it is characterized in that, described matching module, specifically for finding out the power mating most with the received power parsing the terminal received power from calculating, and the transmission path of definite described terminal received power and the angle between antenna for base station deflection, and according to the angle between the transmission path of the position coordinates of base station, described terminal received power and antenna for base station deflection and the distance between described base station and terminal, obtain the position coordinates of this terminal.
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