CN101986747A - Mobile terminal positioning method - Google Patents

Mobile terminal positioning method Download PDF

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Publication number
CN101986747A
CN101986747A CN2010105147095A CN201010514709A CN101986747A CN 101986747 A CN101986747 A CN 101986747A CN 2010105147095 A CN2010105147095 A CN 2010105147095A CN 201010514709 A CN201010514709 A CN 201010514709A CN 101986747 A CN101986747 A CN 101986747A
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China
Prior art keywords
portable terminal
latitude
longitude
district
serving cell
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CN2010105147095A
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Chinese (zh)
Inventor
陈少鹏
王广善
宋永清
李玮
鹿岩
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北京拓明科技有限公司
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Priority to CN2010105147095A priority Critical patent/CN101986747A/en
Publication of CN101986747A publication Critical patent/CN101986747A/en

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Abstract

The invention discloses a mobile terminal positioning method, which comprises the following steps of: acquiring a measurement report of a mobile terminal; calculating a propagation distance of the mobile terminal in each cell by using a wireless propagation model and a time offset TA value; and calculating initial positioning point longitude and latitude of the mobile terminal in each cell by using the propagation distance, the longitude and latitude of the cell and an antenna direction angle, and calculating the final positioning point longitude and latitude of the mobile terminal according to the initial positioning point longitude and latitude of the mobile terminal in each cell. Compared with the conventional positioning method, the mobile terminal positioning method has obviously high positioning accuracy, so the mobile terminal positioning technology can be really applied practically.

Description

Mobile terminal locating method
Technical field
The present invention relates to the mobile communication technology field, particularly mobile terminal locating method.
Background technology
Mobile station positioning method is an emerging technology in recent years in the mobile communications network, along with the increase of mobile communication subscriber quantity and the continuous expansion of user's request, quick, accurate, effectively practical localization method has become moving communicating field and has been badly in need of one of key technology of solution.The location technology of portable terminal has wide application prospect in the mobile communication cell network, as emergency relief, intelligence transportation, dynamic resource management or the like.Mobile communications network is received and sent messages and travelling carriage switches between each base station and takies different base stations and realize mobile communication to travelling carriage by the base station how effectively, accurately, utilize the related data of mobile communications network to carry out the key that the location workable, that accuracy is high is the mobile communications network location technology.
At present, fairly simple localization method has sub-district ID (CellID) localization method, the location that the longitude and latitude that promptly utilizes the latitude and longitude information of the shared Serving cell of travelling carriage (base station) to be similar to replace travelling carriage is realized travelling carriage.Obviously, this localization method, positioning accuracy is lower, movement locus that can not the depicted in greater detail travelling carriage.For improving positioning accuracy, generally used sub-district ID+ Timing Advance (CellID+TA) localization method at present, promptly utilize the shared Serving cell positional information of travelling carriage and the TA of Serving cell to position, specifically as shown in Figure 1, with Serving cell (base station) position is the center of circle, the distance value that the TA value is converted into is as radius, and several such circles intersect at a point, and this point is the position location.Can obtain the intersection point of some circles on this theoretical method, but actual because the error of data is to be difficult to allow several circles that obtain meet at a bit, thus difficulty positions.In addition, TA value 0~63, TA be 0 o'clock range error at 225 meters, and the TA value increases by 1, error range increases by 550 meters, thereby positioning accuracy is still lower.
Summary of the invention
The embodiment of the invention provides a kind of mobile terminal locating method, and it is workable, positioning accuracy is higher.
For achieving the above object, technical scheme of the present invention specifically is achieved in that
A kind of mobile terminal locating method, this method comprises:
Obtain the measurement report MR of portable terminal;
Calculate the propagation distance of portable terminal in Serving cell and all adjacent sub-districts, comprise: for Serving cell, according to the signal strength information of Serving cell in the described measurement report, utilize radio transmission model to calculate the propagation model distance of portable terminal at Serving cell; Utilize the time off-set T A value of Serving cell in the described measurement report to converse the TA distance, and get wherein the smaller as the propagation distance of portable terminal in Serving cell; For adjacent sub-district, then be signal strength signal intensity according to each adjacent sub-district in the described measurement report, utilize portable terminal that radio transmission model calculates in the propagation model distance of Serving cell as propagation distance;
The longitude and latitude and the initial alignment point longitude and latitude of antenna directional angle information calculations portable terminal in each sub-district of the described propagation distance of each sub-district that utilization calculates and each sub-district of from the Back ground Information that obtains in advance, matching according to MR;
The initial alignment point longitude and latitude of portable terminal in each sub-district is weighted on average, obtains weighting anchor point longitude and latitude; With the location initial point longitude and latitude of Serving cell approximate longitude and latitude as this anchor point, the propagation distance of all adjacent sub-districts is utilized the approximate longitude and latitude of this anchor point of least square refinement according to other, obtain revising the anchor point longitude and latitude, weighting anchor point longitude and latitude and approximate location point longitude and latitude are averaged, obtain the final anchor point longitude and latitude of portable terminal.
Preferably, after the described measurement report that obtains portable terminal, calculate before the propagation distance of portable terminal in Serving cell and all adjacent sub-districts, this method further comprises:
Location area codes LAC, cell ID CI, TA, signal strength signal intensity, adjacent sub-district BCCH frequency, BSIC, signal strength information and the drive test MR data of the Serving cell in the measurement report are mated, if the match is successful, then with the portable terminal longitude and latitude data in the drive test MR data directly as the final anchor point longitude and latitude of portable terminal, if coupling is unsuccessful, then continue to carry out and calculate the propagation distance of portable terminal in Serving cell and all adjacent sub-districts, and subsequent step.
Preferably, after the described measurement report that obtains portable terminal, calculate before the propagation distance of portable terminal in Serving cell and all adjacent sub-districts, this method further comprises:
Utilize cell basis information to judge whether the Serving cell at portable terminal place or adjacent sub-district are microcellulors, if portable terminal place Serving cell is a microcellulor, then directly with the longitude and latitude of this microcellulor final anchor point longitude and latitude as portable terminal, if portable terminal place service area is not a microcellulor, and adjacent sub-district is a microcellulor, data that then should neighbour sub-district microcellulor are directly as the final anchor point longitude and latitude of portable terminal, if a plurality of adjacent sub-districts are arranged all is microcellulor, then wherein the longitude and latitude data of any one adjacent sub-district microcellulor directly as the final anchor point longitude and latitude of portable terminal;
If portable terminal place Serving cell and adjacent sub-district are not microcellulors, then continue to carry out and calculate the propagation distance of portable terminal in Serving cell and all adjacent sub-districts, and subsequent step.
Preferably, after the described measurement report that obtains portable terminal, calculate before the propagation distance of portable terminal in Serving cell and all adjacent sub-districts, this method further comprises:
Location area codes LAC, cell ID CI, TA, signal strength signal intensity, adjacent sub-district BCCH frequency, BSIC, signal strength information and the drive test MR data of the Serving cell in the measurement report are mated, if the match is successful, then can be with the portable terminal longitude and latitude data in the drive test MR data directly as the final anchor point longitude and latitude of portable terminal;
If coupling is unsuccessful, then utilize cell basis information to judge whether the Serving cell at portable terminal place or adjacent sub-district are microcellulors, if portable terminal place Serving cell is a microcellulor, then directly with the longitude and latitude of this microcellulor final anchor point longitude and latitude as portable terminal, if portable terminal place service area is not a microcellulor, and adjacent sub-district is a microcellulor, data that then should neighbour sub-district microcellulor are directly as the final anchor point longitude and latitude of portable terminal, if a plurality of adjacent sub-districts are arranged all is microcellulor, then wherein the longitude and latitude data of any one adjacent sub-district microcellulor directly as the final anchor point longitude and latitude of portable terminal;
If portable terminal place Serving cell and adjacent sub-district are not microcellulors, then continue to carry out and calculate the propagation distance of portable terminal in Serving cell and all adjacent sub-districts, and subsequent step.
Preferably, described radio transmission model comprises: the Okumura-Hata model, and its expression formula is: Rxlev=A+B * log (hb)+(C+log (hb)) * log (d); Wherein, hb is the base station height, and A, B, C are constant, and Rxlev is a signal strength signal intensity, and d is the propagation model distance.
Preferably, the described timeslice of utilizing Serving cell in the described measurement report one amount TA value method that converses the TA distance comprises:
Preferably, the longitude and latitude and the initial alignment point longitude and latitude of antenna directional angle information calculations portable terminal in each sub-district of the propagation distance of each sub-district that described utilization calculates and each sub-district of matching from the Back ground Information that obtains in advance according to MR comprise:
Wherein, ε is a random quantity.
Preferably, this method further comprises:
The a plurality of final anchor point longitude and latitude data of being determined by many measurement reports of same portable terminal are carried out nonlinear filtering, obtain the anchor point track of this portable terminal.
As seen from the above technical solutions, this mobile terminal locating method of the present invention combines several different methods the longitude and latitude of anchor point is revised, and can access comparatively accurate localization point longitude and latitude data.
Description of drawings
Fig. 1 is the mobile terminal locating method schematic diagram of existing sub-district ID+ Timing Advance (CellID+TA);
Fig. 2 is the flow chart of mobile terminal locating method embodiment of the present invention;
Fig. 3 is the flow chart of another embodiment of mobile terminal locating method of the present invention.
Embodiment
For making purpose of the present invention, technical scheme and advantage clearer, below with reference to the accompanying drawing embodiment that develops simultaneously, the present invention is described in more detail.
The present invention utilizes radio transmission model, calculate the propagation distance of portable terminal in each sub-district according to portable terminal in the signal strength signal intensity of Serving cell and adjacent sub-district, and position, or comprehensively position according to TA and propagation distance according to the propagation distance that calculates.
Particularly, the concrete implementation step of mobile terminal locating method of the present invention as shown in Figure 2,
Step 201 is obtained the measurement report of portable terminal;
Decode by signaling to portable terminal, can obtain the measurement report (MR of portable terminal, Measurement Report), the information such as signal strength signal intensity, location area codes (LAC), cell ID (CI) and TA that comprise the Serving cell at portable terminal place among MR; And the signal strength signal intensity of all adjacent sub-districts of portable terminal place Serving cell, LAC, CI etc., when follow-up location Calculation, need use these information to mate and calculate.
Step 202 is calculated the propagation distance of portable terminal in each sub-district;
Calculate the propagation distance of portable terminal in Serving cell and all adjacent sub-districts; Particularly, for Serving cell, be signal strength information according to the Serving cell that from the measurement report of portable terminal, obtains, utilize radio transmission model to calculate the propagation model distance of portable terminal at Serving cell; Utilize the TA value of Serving cell in the measurement report to converse the TA distance, and get wherein the smaller as the propagation distance of portable terminal in Serving cell; For adjacent sub-district, then be signal strength signal intensity according to each adjacent sub-district in the measurement report, utilize portable terminal that radio transmission model calculates in the propagation model distance of each adjacent sub-district as propagation distance.
Wherein, the radio transmission model of institute of the present invention foundation is the Okumura-Hata model, and its expression formula is: Rxlev=A+B * log (hb)+(C+log (hb)) * log (d); Wherein, hb is the base station height, and A, B, C are constant, and Rxlev is a signal strength signal intensity, and d is the propagation model distance.The a little parameters of in the radio transmission model each need be determined before location Calculation, wherein height hb in base station can obtain definite data from operator, and the concrete numerical value of constant A, B, C has nuance according to various places base station signal situation, can determine according to universal experience, A=146.8 for example, B=-13.82, C=44.9.If also there is driver test system in the communication system of operator, can also revise constant A, B, C according to the drive test data of operator, for example can carry out match to the propagation model formula, thereby revise constant A, B, C according to signal strength signal intensity among the MR of drive test data and latitude and longitude information.
Certain above-mentioned Okumura-Hata model is one embodiment of the present of invention only, during specific implementation also with can be based on other radio transmission model, as Ibrahim-Parsons model, Ikegami model etc.
In addition, in the present embodiment, the concrete empirical equation of conversion TA distance is as follows:
Above-mentioned formula considered suburb and urban district signal quality and base station coverage condition and has been divided into two empirical equations, in fact do not distinguish also to be fine, and above-mentioned empirical equation can be determined voluntarily according to actual conditions.Wherein, the D value is generally taken off limit value, also can determine value according to actual conditions.
For Serving cell, get propagation model apart from smaller in d and the TA distance D as propagation distance, modal distance d owing to there is not TA, then directly will be broadcast as propagation distance in and adjacent sub-district.
Step 203 utilizes propagation distance, sub-district longitude and latitude and antenna directional angle to calculate the initial alignment point longitude and latitude of portable terminal in each sub-district, and concrete formula is as follows:
Wherein, sub-district longitude and latitude, antenna direction angle information can be according to the corresponding relations of the LAC among the MR, CI information and sub-district longitude and latitude, antenna directional angle and LAC, CI, coupling obtains the Back ground Information from getting access in advance, promptly obtain Back ground Informations such as sub-district longitude and latitude and antenna directional angle in advance from operator, and set up the corresponding relation of itself and LAC and CI, thereby can from Back ground Information, match corresponding sub-district longitude and latitude and antenna directional angle according to LAC and CI.ε in the formula is a random quantity, be to consider the randomness of location of mobile users and a correction value increasing, be used for reflecting the correction of customer location, when result of calculation has deviation, can revise by the ε value is set, can this value be set according to the actual location result error, with the initial alignment point longitude and latitude that corrected Calculation goes out, span generally can be (0.1,0.1), if do not need to adjust the result of calculation of initial longitude and latitude, it is 0 that ε is set, and the ε parameter perhaps is not set gets final product.
After aforementioned calculation, can obtain the portable terminal initial longitude and latitude data in Serving cell and other all adjacent sub-districts respectively, be called initial alignment point longitude and latitude.
Step 204 is calculated the final anchor point longitude and latitude of portable terminal according to the initial alignment point longitude and latitude of portable terminal in each sub-district.
The initial alignment point longitude and latitude that portable terminal is calculated in each sub-district is weighted on average, obtains weighting anchor point longitude and latitude; With the location initial point longitude and latitude of Serving cell approximate longitude and latitude as this anchor point, the propagation distance of all adjacent sub-districts is utilized the approximate longitude and latitude of this anchor point of least square refinement according to other, obtain revising the anchor point longitude and latitude, weighting anchor point longitude and latitude and approximate location point longitude and latitude are averaged, obtain the final anchor point longitude and latitude of portable terminal.
Particularly, when calculating weighting anchor point longitude and latitude, weight can be distributed by the signal strength signal intensity size of each sub-district, and then weight is big by force for signal strength signal intensity, otherwise weight is less, and concrete weight numerical value can define as required voluntarily.
When calculating correction anchor point longitude and latitude, described least square method is specific as follows:
Setting and revising the anchor point longitude and latitude is that (x, y), location approximate some longitude and latitude is (x 0, y 0), the propagation distance of i adjacent sub-district is d i, i adjacent sub-district longitude and latitude is (x i, y i), correction value is (δ x, δ y); Then
v i = ( x - x i ) 2 + ( y - y i ) 2 - d i ; f i ( x , y ) = ( x - x i ) 2 + ( y - y i ) 2 , i = 1,2 , . . . , n ;
With v iBy Taylor series expansion, omit high-order term and get:
v i = ( x 0 - x i ) 2 + ( y 0 - y i ) 2 + ( ∂ f i ∂ x ) x = x 0 · δx + ( ∂ f i ∂ y ) y = y 0 · δy - d i
Wherein:
( ∂ f i ∂ x ) x = x 0 = x 0 - x i ( x 0 - x i ) 2 + ( y 0 - y i ) 2 ; Order ( ∂ f i ∂ x ) x = x 0 = a i
( ∂ f i ∂ y ) y = y 0 = y 0 - y i ( x 0 - x i ) 2 + ( y 0 - y i ) 2 ; Order ( ∂ f i ∂ y ) y = y 0 = b i
Order l i = ( x 0 - x i ) 2 + ( y 0 - y i ) 2 - d i
V then i=a iδ x+b iδ y+l i
Order V = v 1 v 2 · · · v n ; A = a 1 b 1 a 2 b 2 · · · · · · a n b n ; X = δx δy ; l = l 1 l 2 · · · l n
V=AX+l then
Introduce extremum conditions V according to least square method TPV=min; Getting P is unit matrix, can get:
X = δx δy = - A T A - 1 A T l
Bring at last Can revise the anchor point longitude and latitude.
Wherein, v iAnd f iIt is the variable that calculates definition for convenient, above-mentioned least square method is a known data-optimized method in the mathematics, its principle here no longer describes in detail, P gets unit matrix and calculates in the present embodiment, but in the practical application according to the actual conditions difference, P can also get other matrixes, has just enumerated no longer one by one here.
Above-mentioned weighting anchor point longitude and latitude and correction anchor point longitude and latitude are averaged, can obtain final anchor point longitude and latitude.
By the final anchor point longitude and latitude of portable terminal that above-mentioned localization method calculates, its positioning accuracy can reach in 100 meters in the urban district through actual detected, is better than the existing about positioning accuracy more than 200~300 meters even 500 meters of localization method greatly.
If in the communication system of operator driver test system is arranged, owing to comprise portable terminal longitude and latitude data in the drive test MR data by GPS (Global Position System) (GPS) location, and GPS locating accuracy and above-mentioned localization method similar accuracy, therefore can be with the portable terminal longitude and latitude data in the drive test MR data as to the expansion of embodiment of the invention localization method and additional.After for example getting access to the MR of portable terminal, can be earlier will wherein mate as information such as LAC, the CI of Serving cell, TA, signal strength signal intensity, adjacent Cell Broadcast CB control channel (BCCH) frequency, base station identity code BSIC, signal strength signal intensity and drive test MR data, if the match is successful, then can be with the portable terminal longitude and latitude data in the drive test MR data directly as the final anchor point longitude and latitude of portable terminal, if do not match, adopt the localization method of the foregoing description to carry out compute location again.Certainly, concrete matching way is any, uses out of Memory to mate also and is fine.
In addition, also may be applied to the microcellulor technology in operator's communication system, because the coverage of microcell base station itself is less, in portable terminal is in the coverage of microcell base station, if directly with the longitude and latitude of microcell base station longitude and latitude as portable terminal, its positioning accuracy is also suitable with the GPS locating accuracy, therefore, therefore also can be with the longitude and latitude data of microcell base station as the expansion of embodiment of the invention localization method with replenish, for example after obtaining the MR of portable terminal, can utilize cell basis information earlier, as latitude and longitude of base station, antenna directional angle, LAC, CI, BCCH, information such as BSIC, whether Serving cell or the adjacent sub-district of judging the portable terminal place are microcellulors, if portable terminal place Serving cell is a microcellulor, then directly with the longitude and latitude of this microcellulor final anchor point longitude and latitude as portable terminal, if portable terminal place service area is not a microcellulor, and adjacent sub-district is a microcellulor, then can be with data that should neighbour sub-district microcellulor directly as the final anchor point longitude and latitude of portable terminal, if a plurality of adjacent sub-districts are arranged all is microcellulor, then can be with the longitude and latitude data of any one adjacent sub-district microcellulor wherein directly as the final anchor point longitude and latitude of portable terminal.Wherein, cell basis information can be revised according to drive test data, guarantees the accuracy of its data.
Can certainly all introduce in the overall flow of localization method of the present invention by drive test data and microcellulor data above-mentioned, for example shown in Figure 3,
Step 301 is obtained the measurement report of portable terminal;
Step 302 is mated the measurement report and the drive test MR data of portable terminal; If execution in step 303 then that the match is successful, otherwise execution in step 304.
Step 303, with the longitude and latitude of portable terminal in the drive test MR data directly as the final anchor point longitude and latitude of portable terminal.
Step 304 judges according to the cell basis data whether portable terminal place Serving cell and adjacent sub-district have microcellulor, if, execution in step 305, otherwise execution in step 306.
Step 305, with the microcellulor longitude and latitude directly as the final anchor point longitude and latitude of portable terminal.
Step 306 is calculated the final anchor point longitude and latitude of portable terminal according to radio transmission model and TA.
The above steps specific implementation method please refer to the specific implementation method to each step of Fig. 2 and expansion scheme, no longer is repeated in this description here.
In the embodiment of the invention, whenever obtain a MR, can determine a final anchor point longitude and latitude, general portable terminal is once conversed and is had many MR, obtain this many MR, the flow process of repetition above-mentioned steps 301~306 can obtain a plurality of final anchor point longitude and latitude data at this same portable terminal, by these a plurality of final anchor point longitude and latitude data, just can determine the movement locus of portable terminal.In addition, can also carry out nonlinear filtering to one in the track, longitude and latitude data a plurality of or all final anchor points, the anchor point longitude and latitude data of promptly getting a certain number of (being filter length) before or after certain anchor point average, obtain the filtered longitude and latitude data of this anchor point, adopt filtered longitude and latitude data can make the anchor point track of portable terminal more level and smooth, more accurate.
By the above embodiments as seen, this mobile terminal locating method of the present invention combines several different methods the longitude and latitude of anchor point is revised, and can access comparatively accurately to decide anchor point longitude and latitude data.Test according to reality, mobile terminal locating method of the present invention, its positioning accuracy can reach in 100 meters in the urban district, and existing method is put down in writing according to document, precision is greatly about more than 200~300 meters even 500 meters, the present invention compares existing localization method, and its positioning accuracy obviously improves, and makes the technology of portable terminal location can really possess actual application ability.

Claims (8)

1. a mobile terminal locating method is characterized in that, this method comprises:
Obtain the measurement report MR of portable terminal;
Calculate the propagation distance of portable terminal in Serving cell and all adjacent sub-districts, comprise: for Serving cell, according to the signal strength information of Serving cell in the described measurement report, utilize radio transmission model to calculate the propagation model distance of portable terminal at Serving cell; Utilize the time off-set T A value of Serving cell in the described measurement report to converse the TA distance, and get wherein the smaller as the propagation distance of portable terminal in Serving cell; For adjacent sub-district, then be signal strength signal intensity according to each adjacent sub-district in the described measurement report, utilize portable terminal that radio transmission model calculates in the propagation model distance of Serving cell as propagation distance;
The longitude and latitude and the initial alignment point longitude and latitude of antenna directional angle information calculations portable terminal in each sub-district of the described propagation distance of each sub-district that utilization calculates and each sub-district of from the Back ground Information that obtains in advance, matching according to MR;
The initial alignment point longitude and latitude of portable terminal in each sub-district is weighted on average, obtains weighting anchor point longitude and latitude; With the location initial point longitude and latitude of Serving cell approximate longitude and latitude as this anchor point, the propagation distance of all adjacent sub-districts is utilized the approximate longitude and latitude of this anchor point of least square refinement according to other, obtain revising the anchor point longitude and latitude, weighting anchor point longitude and latitude and approximate location point longitude and latitude are averaged, obtain the final anchor point longitude and latitude of portable terminal.
2. mobile terminal locating method as claimed in claim 1 is characterized in that, after the described measurement report that obtains portable terminal, calculates before the propagation distance of portable terminal in Serving cell and all adjacent sub-districts, and this method further comprises:
Location area codes LAC, cell ID CI, TA, signal strength signal intensity, adjacent Cell Broadcast CB control channel BCCH frequency, base station identity code BSIC, signal strength information and the drive test MR data of the Serving cell in the measurement report are mated, if the match is successful, then with the portable terminal longitude and latitude data in the drive test MR data directly as the final anchor point longitude and latitude of portable terminal, if coupling is unsuccessful, then continue to carry out and calculate the propagation distance of portable terminal in Serving cell and all adjacent sub-districts, and subsequent step.
3. mobile terminal locating method as claimed in claim 1 is characterized in that, after the described measurement report that obtains portable terminal, calculates before the propagation distance of portable terminal in Serving cell and all adjacent sub-districts, and this method further comprises:
Utilize cell basis information to judge whether the Serving cell at portable terminal place or adjacent sub-district are microcellulors, if portable terminal place Serving cell is a microcellulor, then directly with the longitude and latitude of this microcellulor final anchor point longitude and latitude as portable terminal, if portable terminal place service area is not a microcellulor, and adjacent sub-district is a microcellulor, data that then should neighbour sub-district microcellulor are directly as the final anchor point longitude and latitude of portable terminal, if a plurality of adjacent sub-districts are arranged all is microcellulor, then wherein the longitude and latitude data of any one adjacent sub-district microcellulor directly as the final anchor point longitude and latitude of portable terminal;
If portable terminal place Serving cell and adjacent sub-district are not microcellulors, then continue to carry out and calculate the propagation distance of portable terminal in Serving cell and all adjacent sub-districts, and subsequent step.
4. mobile terminal locating method as claimed in claim 1 is characterized in that, after the described measurement report that obtains portable terminal, calculates before the propagation distance of portable terminal in Serving cell and all adjacent sub-districts, and this method further comprises:
Location area codes LAC, cell ID CI, TA, signal strength signal intensity, adjacent sub-district BCCH frequency, BSIC, signal strength information and the drive test MR data of the Serving cell in the measurement report are mated, if the match is successful, then with the portable terminal longitude and latitude data in the drive test MR data directly as the final anchor point longitude and latitude of portable terminal;
If coupling is unsuccessful, then utilize cell basis information to judge whether the Serving cell at portable terminal place or adjacent sub-district are microcellulors, if portable terminal place Serving cell is a microcellulor, then directly with the longitude and latitude of this microcellulor final anchor point longitude and latitude as portable terminal, if portable terminal place service area is not a microcellulor, and adjacent sub-district is a microcellulor, data that then should neighbour sub-district microcellulor are directly as the final anchor point longitude and latitude of portable terminal, if a plurality of adjacent sub-districts are arranged all is microcellulor, then wherein the longitude and latitude data of any one adjacent sub-district microcellulor directly as the final anchor point longitude and latitude of portable terminal;
If portable terminal place Serving cell and adjacent sub-district are not microcellulors, then continue to carry out and calculate the propagation distance of portable terminal in Serving cell and all adjacent sub-districts, and subsequent step.
5. as the described mobile terminal locating method of each claim in the claim 1~4, it is characterized in that, described radio transmission model comprises: the Okumura-Hata model, and its expression formula is: Rxlev=A+B * log (hb)+(C+log (hb)) * log (d); Wherein, hb is the base station height, and A, B, C are constant, and Rxlev is a signal strength signal intensity, and d is the propagation model distance.
6. as the described mobile terminal locating method of each claim in the claim 1~4, it is characterized in that the method that the described TA value of utilizing Serving cell in the described measurement report converses the TA distance comprises:
7. as the described mobile terminal locating method of each claim in the claim 1~4, it is characterized in that, the longitude and latitude and the initial alignment point longitude and latitude of antenna directional angle information calculations portable terminal in each sub-district of the propagation distance of each sub-district that described utilization calculates and each sub-district of matching from the Back ground Information that obtains in advance according to MR comprise:
Wherein, ε is a random quantity.
8. as the described mobile terminal locating method of each claim in the claim 1~4, it is characterized in that this method further comprises:
The a plurality of final anchor point longitude and latitude data that many measurement report MR by same portable terminal calculate are carried out nonlinear filtering, obtain the anchor point track of this portable terminal.
CN2010105147095A 2010-10-14 2010-10-14 Mobile terminal positioning method CN101986747A (en)

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