CN103906228B - Base station Differential positioning method, positioner and the system of mobile terminal - Google Patents
Base station Differential positioning method, positioner and the system of mobile terminal Download PDFInfo
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- CN103906228B CN103906228B CN201210583610.XA CN201210583610A CN103906228B CN 103906228 B CN103906228 B CN 103906228B CN 201210583610 A CN201210583610 A CN 201210583610A CN 103906228 B CN103906228 B CN 103906228B
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Abstract
The invention discloses a kind of base station Differential positioning method of mobile terminal, positioner obtains the one or more base station difference information to match with Location Request from the difference information database of base station, calculates mobile terminal to the signal propagation time of multiple base stations or the signal propagation time of multiple base stations be poor or the corrected value of the signal intensity of base station；Positioner is corrected respectively using corrected value to parameters；Positioner calculates the location information of mobile terminal according to the parameter after correction.Base station Differential positioning method, positioner and the system of the mobile terminal of the present invention, difference correction is carried out to more base station informations of unknown position with more base station informations of one or more known locations, eliminate because the dynamic error and feeder length etc. such as base station signal drift cause static error, lift positioning precision, ordinary terminal automatic data collection differential data can be utilized, it is convenient to carry out.
Description
Technical field
The present invention relates to the base station Differential positioning side in mobile communication locating technology field, more particularly to a kind of mobile terminal
Method, positioner and system.
Background technology
At present, main multiple-base station positioning method includes：TOA, TDOA etc., principle be by measurement signal from base station to end
In propagation time between end, corresponding distance is conversed, then calculate terminal according to multiple distances and known base station location
Latitude and longitude coordinates.There is error in the signal propagation time measurement of base station to terminal, source includes feeder length, base station is believed
Number phase drift etc., error is transmitted to final positioning result by caused range measurement error up to more than 100 meters.
At present, gpsOne systems correct propagated error to every cell using a FLC parameters, but the parameter need to be surveyed manually
Amount, dynamic drift problem is not solved yet.More base station fingerprint locations need data volume very big, it is impossible to Zone Full is covered, and
The fingerprint in same place may also cause error because of reasons such as the stabilization of equipment performance such as base station signal, terminal.
A kind of for this reason, it may be necessary to new mobile terminal locating method.
The content of the invention
In view of this, the invention solves a technical problem be to provide the base station Differential positioning side of mobile terminal a kind of
Method, difference correction is carried out with more base station informations of known location.
A kind of base station Differential positioning method of mobile terminal, including：It is poor that positioner receives the base station that mobile terminal uploads
Divide information, base station difference information is saved in base station difference information database；Wherein, the base station difference information includes：It is mobile
Position coordinates, the signal propagation time or signal propagation time of mobile terminal at least one base station of terminal are poor or mobile whole
Termination receives the signal intensity of base station；The positioner receives the Location Request of mobile terminal, and the Location Request includes：Move
Dynamic terminal is poor or the signal of multiple base stations is strong to the signal propagation time of multiple base stations or the signal propagation time of multiple base stations
Degree；The positioner obtains one or more to match with the Location Request from the base station difference information database
Base station difference information, calculate the mobile terminal and propagated to the signal propagation time of multiple base stations or the signal of multiple base stations
The corrected value of the signal intensity of time difference or multiple base stations；The positioner is using corrected value in the Location Request
Mobile terminal is to the signal propagation time of multiple base stations or the signal propagation time of multiple base stations be poor or the signal of multiple base stations
Intensity is corrected respectively；The positioner according to the mobile terminal after correction to the signal propagation time of multiple base stations or
The signal propagation time of multiple base stations is poor or the signal intensity of multiple base stations, and the position of the multiple base station, calculates shifting
The location information of dynamic terminal.
According to one embodiment of the method for the invention, further, mobile terminal generation base station difference information, the base
Difference information of standing includes：Gps coordinate, mobile terminal to serving BS and one or more adjacent base stations signal propagation time or
The signal propagation time of multiple adjacent base stations and serving BS is poor or the signal intensity of serving BS and multiple adjacent base stations；Wherein, move
Dynamic terminal is when using gps satellite positioning service, measurement mobile terminal to serving BS and the signal of one or more adjacent base stations
Propagation time, and obtain multiple adjacent base stations and the signal propagation time difference or serving BS and the letter of multiple adjacent base stations of serving BS
Number intensity；The Location Request includes mobile terminal to serving BS and the signal propagation time of one or more adjacent base stations, more
The signal propagation time of individual adjacent base station and the serving BS is poor or the signal intensity of serving BS and multiple adjacent base stations；Wherein,
The base station that mobile terminal connected and provided service is serving BS, and other base stations that mobile terminal can be measured that are adjacent base station.
According to one embodiment of the method for the invention, further, with serving BS and adjacent base station it is whether identical and letter
The degree of closeness of number propagation time difference as standard, the positioner obtained from the base station difference information database with
The one or more base station difference information that the Location Request matches；Gps coordinate and service in the difference information of base station
Base station, the position of adjacent base station, the actual propagation time difference of multiple adjacent base stations and the serving BS is calculated respectively；Wherein,
Signal propagation time difference in corrected value=actual propagation time difference-base station difference information；By each corrected value respectively to institute
State multiple adjacent base stations in Location Request and the signal propagation time difference of the serving BS is corrected.
According to one embodiment of the method for the invention, further, it is more in the Location Request after correction
Individual adjacent base station and the signal propagation time of the serving BS are poor, with reference to serving BS, the position of adjacent base station, by reaching time-difference
Algorithm, calculate the physical location for being positioned mobile terminal.
According to one embodiment of the method for the invention, further, with serving BS and adjacent base station it is whether identical and move
Dynamic terminal is to the degree of closeness of serving BS and the signal propagation time of one or more adjacent base stations as standard, the positioning dress
Put the one or more base station difference information for obtaining from the base station difference information database and matching with the Location Request；
The position of gps coordinate and serving BS, adjacent base station in the difference information of base station calculates mobile terminal to service base respectively
Stand and the signal true propagation time of one or more adjacent base stations；Wherein：M- base station difference during corrected value=signal true propagation
Mobile terminal in information is to serving BS and the signal propagation time of one or more adjacent base stations；Distinguished by each corrected value
The signal propagation time of mobile terminal in the Location Request to serving BS and one or more adjacent base stations is corrected.
According to one embodiment of the method for the invention, further, the shifting in the Location Request after correction
Dynamic terminal to serving BS and the signal propagation time of one or more adjacent base stations, with reference to serving BS, the position of adjacent base station, press
Shine and reach time algorithm, calculate the physical location for being positioned terminal.
In view of this, the invention solves a technical problem be to provide a kind of positioner of mobile terminal, with
Know that more base station informations of position carry out difference correction.
A kind of mobile terminal location device, including：Difference information receiving unit, for receiving the base station of mobile terminal upload
Difference information, base station difference information is saved in base station difference information database；Wherein, the base station difference information includes：Move
Position coordinates, the signal propagation time or signal propagation time of mobile terminal at least one base station of dynamic terminal are poor or mobile
Terminal receives the signal intensity of base station；Location Request receiving unit, for receiving the Location Request of mobile terminal, the positioning
Request includes：Mobile terminal is to the signal propagation time of multiple base stations or the signal propagation time of multiple base stations be poor or multiple bases
The signal intensity stood；Correction values calculation unit, for being obtained and the Location Request from the base station difference information database
The one or more base station difference information to match, calculate the mobile terminal to the signal propagation time of multiple base stations or
The signal propagation time of multiple base stations is poor or the corrected value of the signal intensity of multiple base stations；Positional parameter corrects unit, for making
The signal propagation time of the mobile terminal in the Location Request to multiple base stations or the signal of multiple base stations are passed with corrected value
The signal intensity for broadcasting time difference or multiple base stations is corrected respectively；Localization computation unit, for according to the mobile end after correction
Hold multiple base stations signal propagation time or multiple base stations signal propagation time is poor or the signal intensity of multiple base stations, with
And the position of the multiple base station, calculate the location information of mobile terminal.
One embodiment of the apparatus according to the invention, further, mobile terminal generation base station difference information, the base
Difference information of standing includes：Gps coordinate, mobile terminal to serving BS and one or more adjacent base stations signal propagation time or
The signal propagation time of multiple adjacent base stations and serving BS is poor or the signal intensity of serving BS and multiple adjacent base stations；Wherein, move
Dynamic terminal is when using gps satellite positioning service, measurement mobile terminal to serving BS and the signal of one or more adjacent base stations
Propagation time, and obtain multiple adjacent base stations and the signal propagation time difference or serving BS and the letter of multiple adjacent base stations of serving BS
Number intensity；The Location Request includes mobile terminal to serving BS and the signal propagation time of one or more adjacent base stations, more
The signal propagation time of individual adjacent base station and the serving BS is poor or the signal intensity of serving BS and multiple adjacent base stations；Wherein,
The base station that mobile terminal connected and provided service is serving BS, and other base stations that mobile terminal can be measured that are adjacent base station.
One embodiment of the apparatus according to the invention, further, with serving BS and adjacent base station it is whether identical and letter
The degree of closeness of number propagation time difference is as standard, and the correction values calculation unit is from the base station difference information database
Obtain the one or more base station difference information to match with the Location Request；The correction values calculation unit is poor according to base station
The gps coordinate divided in information and serving BS, the position of adjacent base station, multiple adjacent base stations and the serving BS are calculated respectively
The actual propagation time difference；Wherein, the signal propagation time difference in corrected value=actual propagation time difference-base station difference information；
The positional parameter corrects unit by each corrected value respectively to multiple adjacent base stations in the Location Request and the service
The signal propagation time difference of base station is corrected.
One embodiment of the apparatus according to the invention, further, the localization computation unit is according to the institute after correction
State multiple adjacent base stations in Location Request and the signal propagation time of the serving BS is poor, with reference to serving BS, adjacent base station
Position, by arrival time difference algorithm, calculate the physical location for being positioned mobile terminal.
One embodiment of the apparatus according to the invention, further, with serving BS and adjacent base station it is whether identical and move
Dynamic terminal is to the degree of closeness of serving BS and the signal propagation time of one or more adjacent base stations as standard, the positioning dress
Put the one or more base station difference information for obtaining from the base station difference information database and matching with the Location Request；
Gps coordinate and serving BS of the correction values calculation unit in the difference information of base station, the position of adjacent base station calculate respectively
Go out mobile terminal to serving BS and the signal true propagation time of one or more adjacent base stations；Wherein：Corrected value=signal is true
Mobile terminal in propagation time-base station difference information is to serving BS and the signal propagation time of one or more adjacent base stations；
Positional parameter correction unit by each corrected value respectively to the mobile terminal in the Location Request to serving BS with
The signal propagation time of one or more adjacent base stations is corrected.
One embodiment of the apparatus according to the invention, further, the localization computation unit is according to the institute after correction
State mobile terminal in Location Request to serving BS and the signal propagation time of one or more adjacent base stations, with reference to service base
Stand, the position of adjacent base station, according to arrival time algorithm, calculate the physical location for being positioned terminal.
Base station Differential positioning method, positioner and the system of the mobile terminal of the invention of the present invention, with one or more
More base station informations of individual known location carry out difference correction to more base station informations of unknown position, so as to eliminate because base station signal
The dynamic errors and feeder length etc. such as drift cause static error, lift positioning precision；And ordinary terminal can be utilized
Automatic data collection differential data, it is convenient to carry out without manual measurement, it is necessary to which data volume is considerably less than fingerprint location.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only
Some embodiments of the present invention, for those of ordinary skill in the art, without having to pay creative labor, also
Other accompanying drawings can be obtained according to these accompanying drawings.
Fig. 1 is the flow chart according to one embodiment of the base station Differential positioning method of the mobile terminal of the present invention；
Fig. 2 is the principle schematic of arrival time difference algorithm；
Fig. 3 is the flow chart according to one embodiment of the base station Differential positioning method of the mobile terminal of the present invention.
Embodiment
The present invention is described more fully with reference to the accompanying drawings, wherein illustrating the exemplary embodiment of the present invention.Under
The accompanying drawing that face will be combined in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, and shows
So, described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.Based on the reality in the present invention
Example is applied, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made, is all belonged to
In the scope of protection of the invention.Many descriptions are carried out to technical scheme with reference to each figure and embodiment.
Fig. 1 is the flow chart according to one embodiment of the base station Differential positioning method of the mobile terminal of the present invention.Such as figure
It is shown：
Step 102, positioner receives the base station difference information that mobile terminal uploads, and base station difference information is saved in into base
Stand difference information database；Wherein, base station difference information includes：The position coordinates of mobile terminal, mobile terminal are at least one
The signal propagation time or signal propagation time of base station be poor or mobile terminal receives the signal intensity of base station；
Step 103, positioner receives the Location Request of mobile terminal, and Location Request includes：Mobile terminal is to multiple bases
The signal propagation time or the signal propagation time of multiple base stations stood be poor or the signal intensity of multiple base stations；
Step 104, positioner obtains one or more to match with Location Request from the difference information database of base station
Bar base station difference information, calculate mobile terminal to multiple base stations signal propagation time or multiple base stations signal propagate when
Between poor or multiple base stations signal intensity corrected value；
Step 105, positioner is propagated the signal of the mobile terminal in Location Request to multiple base stations using corrected value
The signal propagation time of time or multiple base stations is poor or the signal intensity of multiple base stations is corrected respectively；
Step 106, signal propagation time or multiple base of the positioner according to the mobile terminal after correction to multiple base stations
The signal propagation time stood is poor or the signal intensity of multiple base stations, and the position of multiple base stations, calculates determining for mobile terminal
Position information.
According to one embodiment of present invention, signal propagation time or multiple base station of the mobile terminal to multiple base stations
Signal propagation time is poor or the signal intensity of multiple base stations is 3 kinds of independent parameters for positioning, can be used alone and does
Location Calculation, it can also integrate and do location Calculation.The parameter of 3 types can carry out difference with the inventive method
Correction.
According to one embodiment of present invention, mobile terminal generation base station difference information, base station difference information include：GPS
Coordinate, the signal propagation time of mobile terminal to serving BS and one or more adjacent base stations or multiple adjacent base stations and service base
The signal propagation time stood is poor or the signal intensity of serving BS and multiple adjacent base stations.
For mobile terminal when using gps satellite positioning service, measurement mobile terminal to serving BS and one or more are adjacent
The signal propagation time of base station, and obtain the signal propagation time difference or serving BS and multiple of multiple adjacent base stations and serving BS
The signal intensity of adjacent base station.
Location Request includes mobile terminal to serving BS and the signal propagation time of one or more adjacent base stations, Duo Gelin
The signal propagation time of base station and serving BS is poor or the signal intensity of serving BS and multiple adjacent base stations；Wherein, mobile terminal
The base station for connecting and providing service is serving BS, and other base stations that mobile terminal can be measured that are adjacent base station.
According to one embodiment of present invention, so that whether serving BS and adjacent base station identical and signal propagation time difference
Degree of closeness as standard, positioner obtained from the difference information database of base station match with Location Request one or
A plurality of base station difference information.Gps coordinate and serving BS, the position of adjacent base station in the difference information of base station, are calculated respectively
Go out the actual propagation time difference of multiple adjacent base stations and serving BS.
Signal propagation time difference in corrected value=actual propagation time difference-base station difference information.
It is poor to multiple adjacent base stations in Location Request and the signal propagation time of serving BS respectively by each corrected value
It is corrected.
According to one embodiment of present invention, multiple adjacent base stations in the Location Request after correction and serving BS
Signal propagation time is poor, with reference to serving BS, the position of adjacent base station, by arrival time difference algorithm, calculates and is positioned movement eventually
The physical location at end.
According to one embodiment of present invention, it is poor by signal propagation time and signal propagation time, phase can be converted into
The propagation distance answered.
Signal propagation time, it is the time that signal is propagated in base station and terminal room, is proportional to the distance of base station and terminal room.
Signal propagation time is poor, is propagation time difference of the signal in different base station to 1 terminal.Either signal from 1 base station to
The propagation time difference of multiple different terminals.
To the basic skills corrected with the range difference of 2 base stations measured in this positioning：Correction distance difference=measurement away from
Deviation-corrected value, antenna feeder line length, the error of base station drift can be eliminated.Differential data is close with the base station data that this is positioned,
Acquisition time is more close, then difference correction effect is better.Base station difference information, to the terminal of known location, by terminal or base
The base station parameter that station measures, including but not limited to signal propagation time or signal propagation time are poor, signal intensity etc..
For example, mobile communications network is cdma network, serving cell refers to the day of antenna and serving cell with website cell
Cell of the line in same position.In mobile communications network, generally each base station location includes the antenna of 3 or multiple directions,
Each antenna covers the cell of a sector shape.As the convention of mobile communication, when terminal communicates, offer is connected with terminal
The base station of service is serving BS, terminal it is observed that other base stations be referred to as adjacent base station.
According to one embodiment of present invention, the base station Differential positioning method of mobile terminal in a cdma network is as follows,
Mobile terminal therein may be simply referred to as terminal：
1, terminal uploads gps coordinate, base station parameter, remains to base station difference information database.
Terminal is common user terminal, and when using gps satellite positioning service, applications client is carried out user simultaneously
Base station parameter measures, and when being communicated with service end, upper report positions the base station parameter that gps coordinate and terminal are measured together
Platform, the gps coordinate and base station parameter that locating platform reports this time remain to difference information as a base station differential data
In database.
Terminal can also be special differential data acquisition terminal, be arranged on ad-hoc location, such as may be provided at by base station
Side, its position coordinates are identical with base station.The terminal periodically carries out the measurement of peripheral base station parameter, says that measurement result is reported to positioning
The coordinate of the base station and the base station parameter reported every time are saved as a base station difference information by platform, locating platform.It is same
Place can have a plurality of base station difference information.
The base station differential data that reference terminal 1 reports includes that signal propagation time is poor, signal intensity.Complete base station difference
Information record is included such as the field in table 1 below：
Table 1- base stations difference information record
Signal propagation time is poor, is the propagation time that signal arrives reference terminal in serving BS and the adjacent base station 2 of adjacent base station 1/
Difference.
In a cdma network, the measurable time difference arrived（Signal propagation time is poor）, its unit is 1/16CDMA chips, is multiplied
With the speed of radio signal propagation（The light velocity）, terminal is can be converted into serving BS and the range difference of adjacent base station, each unit phase
When in about 15 meters.
Table 1 includes the base station differential data that 2 reference terminals are sent, and is adopted respectively by reference terminal 1 and reference terminal 2
Collection.Base station difference information table can also include the time of collection.
2, locating platform receives Location Request, and one or more base station parameters comprising terminal measurement include but is not limited to believe
Number propagation time, signal propagation time are poor, signal strength information.
When being positioned to being positioned terminal, a Location Request is initiated, locating platform receives Location Request, should ask
In asking, including it is positioned the signal propagation time difference and signal strength information of 3 base stations that terminal measures.Such as table 2 below.
Table 2- is positioned signal propagation time difference and the signal strength information that terminal measures
As known from Table 2, being positioned terminal relative time difference is（12,2）, according to CDMA setting, time per unit difference phase
When in propagation time × light velocity, per unit is equivalent to about 14.6 meters.
Base station 5475, the position of adjacent base station PN428, PN260 are, it is known that being calculated according to the positioning of existing base station time difference
Method, it is the position that can determine that terminal to calculate hyperbola intersection point.
3, from the difference information database of base station, obtain the one or more base station difference to match with current request and believe
Breath.
It is identical as condition coupling with adjacent base station using serving BS, got from the differential data storehouse of base station reference terminal 1,
The record for 2 base station difference informations that reference terminal 2 collects, the time difference difference corresponding to reference terminal 1, reference terminal 2
For（18,5）,（2,17）.
Due to the time difference parameter measured in first record and this positioning（12,2）Relatively, therefore, select
First base station difference information that reference terminal 1 is sent is corrected.
4, using base station difference information, the parameter such as poor, signal intensity of each base station time in current request base station information is entered
Row difference correction.
Correction distance difference=measurement distance difference-corrected value, antenna feeder line length, the error of base station drift can be eliminated.
With first base station difference information（18,5）The method being corrected is as follows：
Due to the position of the reference terminal 1 of the record（Gps data）With serving BS, the position of adjacent base station（Gps data）
All it is known, according to terminal and the actual range of base station, actual propagation time difference can be conversed, conversed in the present embodiment
Time difference be（16,8）, therefore corrected value：
1 corrected value of time difference=16-18=- 2；
2 corrected values of time difference=8-5=3；
To the time difference of the measurement result of this positioning（12,2）It is corrected, correction result is：
Time difference 1 '=1 corrected value of 12+ time differences=12-2=10
Time difference 2 '=2 corrected values of 12+ time differences=2+3=5
Therefore the time difference after correction is（10,5）.
5, with the base station parameter after correction, complete position by location algorithm and calculate.
With the time difference after correction（10,5）, can be by existing digital with 3 base stations of known location（Hyperbola
Intersection point）Algorithm or other location algorithms, calculate the physical location for being positioned terminal.A plurality of base station differential data pair can also be used
This positioning says that one or more time difference informations measured are corrected respectively.
According to one embodiment of present invention, a plurality of base station difference information can also be used, to poor at the same time or signal
The parameters such as intensity carry out composed correction, make correction result more reliable by statistical average.
Because the time difference parameter after correction is more accurate, the advantage of triangle polyester fibre and fingerprint location can be combined, passes through profit
Difference correction is carried out with the historical data from collection.
Fig. 2 is the principle schematic of arrival time difference algorithm.
TDOA（Reaching time-difference）It is a kind of wireless location technology, receives time difference of signal with multiple base stations to determine
Location of mobile station, the time difference of two base stations, rather than the absolute time reached are reached by detection signal to determine mobile station
Position, reduce time synchronized requirement.As shown in Figure 2：Two TDOA can be measured using three different base stations, it is mobile whole
End is on the hyp intersection point that two TDOA are determined.
According to one embodiment of present invention, TOA (arrival time) positioning method, by detection signal reach base station when
Between, to determine that mobile station reaches the distance and position of base station.For example, detection signal reaches the time of 2 base stations, and shifting is calculated respectively
Dynamic terminal reaches the distance of two base stations, it may be determined that intersection point of the mobile terminal positioned at two curves centered on two base stations
On.
According to one embodiment of present invention, so that whether serving BS and adjacent base station identical and mobile terminal is to serving BS
With the degree of closeness of the signal propagation time of one or more adjacent base stations as standard, positioner is from base station difference information data
The one or more base station difference information to match with Location Request is obtained in storehouse.
Gps coordinate and serving BS, the position of adjacent base station in the difference information of base station calculate mobile terminal respectively
To serving BS and the signal true propagation time of one or more adjacent base stations.Wherein：
Mobile terminal during corrected value=signal true propagation in m- base station difference information is to serving BS and one or more
The signal propagation time of individual adjacent base station.
By each corrected value respectively to the mobile terminal in Location Request to serving BS and one or more adjacent base stations
Signal propagation time be corrected.
According to one embodiment of present invention, the mobile terminal in the Location Request after correction is to serving BS and one
The signal propagation time of individual or multiple adjacent base stations, with reference to serving BS, the position of adjacent base station, according to arrival time algorithm, calculate
Go out to be positioned the physical location of terminal.
Fig. 3 is the flow chart according to one embodiment of the base station Differential positioning method of the mobile terminal of the present invention.Such as Fig. 3
It is shown：Mobile terminal location device 31 includes：Difference information receiving unit 311, Location Request receiving unit 312, corrected value meter
Calculate unit 313, positional parameter correction unit and localization computation unit.
Difference information receiving unit 311 receives the base station difference information that mobile terminal 32,33 uploads, by base station difference information
It is saved in base station difference information database.Base station difference information includes：The gps coordinate of mobile terminal 32,33, mobile terminal 32,
33 arrive the signal intensity of poor, each base station of signal propagation time of the signal propagation time and multiple base stations of multiple base stations.
Location Request receiving unit 312 receives the Location Request of mobile terminal 34, and Location Request includes：Mobile terminal 34 arrives
The signal propagation time of the multiple base stations and signal propagation time of multiple base stations is poor or the signal intensity of each base station.
Correction values calculation unit 313 obtains one or more to match with Location Request from the difference information database of base station
Bar base station difference information, calculate mobile terminal 34 to multiple base stations signal propagation time or multiple base stations signal propagate when
Between poor or each base station signal intensity corrected value.
Positional parameter correction unit 314 arrives the signal of multiple base stations using corrected value to the mobile terminal 34 in Location Request
The signal propagation time difference of propagation time or multiple base stations is not corrected.
Signal propagation time or multiple base of the localization computation unit 315 according to the mobile terminal 34 after correction to multiple base stations
The signal propagation time stood is poor or the signal intensity of each base station, and the position of multiple base stations, calculates determining for mobile terminal
Position information.
According to one embodiment of present invention, mobile terminal 32,33 generates base station difference information, base station difference information bag
Include：Gps coordinate, the signal propagation time of mobile terminal to serving BS 35 and one or more adjacent base stations 36,37, multiple adjacent bases
It is 36,37 poor with the signal propagation time of serving BS 35 to stand.
For mobile terminal 32,33 when using gps satellite positioning service, measurement mobile terminal 34 arrives serving BS 35 and one
Or the signal propagation time of multiple adjacent base stations 36,37, and when the signal for obtaining multiple adjacent base stations 36,37 and serving BS 35 is propagated
Between it is poor.
When Location Request includes mobile terminal 34 to serving BS 35 and the propagation of the signal of one or more adjacent base stations 36,37
Between, multiple adjacent base stations 36,37 it is poor with the signal propagation time of serving BS 35.The base station that mobile terminal connected and provided service is
Serving BS, other base stations that mobile terminal can be measured that are adjacent base station.
According to one embodiment of present invention, so that whether serving BS and adjacent base station identical and signal propagation time difference
Degree of closeness as standard, correction values calculation unit 313 obtains and Location Request phase from the difference information database of base station
The one or more base station difference information matched somebody with somebody.
Gps coordinate and serving BS of the correction values calculation unit 313 in the difference information of base station, the position of adjacent base station,
The actual propagation time difference of multiple adjacent base stations and serving BS is calculated respectively.
Signal propagation time difference in corrected value=actual propagation time difference-base station difference information.
Positional parameter corrects unit 314 by each corrected value respectively to multiple adjacent base stations in Location Request and service base
The signal propagation time difference stood is corrected.
According to one embodiment of present invention, multiple neighbours of the localization computation unit 315 in the Location Request after correction
The signal propagation time of base station and serving BS is poor, with reference to serving BS, the position of adjacent base station, by arrival time difference algorithm, meter
Calculate the physical location for being positioned mobile terminal.
According to one embodiment of present invention, so that whether serving BS and adjacent base station identical and mobile terminal is to serving BS
It is poor from base station as standard, correction values calculation unit 313 with the degree of closeness of the signal propagation time of one or more adjacent base stations
Divide the one or more base station difference information for obtaining in information database and matching with Location Request.
The position point of gps coordinate and serving BS of the correction values calculation unit 313 in the difference information of base station, adjacent base station
Mobile terminal is not calculated to serving BS and the signal true propagation time of one or more adjacent base stations.
Mobile terminal during corrected value=signal true propagation in m- base station difference information is to serving BS and one or more
The signal propagation time of individual adjacent base station.
Positional parameter corrects unit 314 by each corrected value respectively to the mobile terminal in Location Request to serving BS
It is corrected with the signal propagation time of one or more adjacent base stations.
According to one embodiment of present invention, mobile end of the localization computation unit 315 in the Location Request after correction
Hold the signal propagation time of serving BS and one or more adjacent base stations, with reference to serving BS, the position of adjacent base station, according to
Up to time algorithm, the physical location for being positioned terminal is calculated.
Base station Differential positioning method, positioner and the system of the mobile terminal of the present invention, terminal is when carrying out GPS location
The information such as time difference of reporting base station simultaneously is waited, recorded in differential data storehouse；When other-end carries out more architectures,
Most similar more base station informations in differential data storehouse are obtained, with more base station informations of one or more known locations to unknown position
More base station informations carry out difference correction, so as to eliminate because base station signal drift etc. dynamic error and feeder length etc. draw
Static error is played, lifts positioning precision；And ordinary terminal automatic data collection differential data can be utilized, without manual measurement, is needed
Data volume is wanted to be considerably less than fingerprint location, it is convenient to carry out.
Terminal is the terminal device that can be communicated by mobile communications network, and mobile communications network includes but is not limited to
WCDMA, CDMA, TD-CDMA, WiFi, LTE etc., including but not limited to 2G, 3G, 4G mobile network.
The present invention has obvious advantage and beneficial effect compared with prior art：
1st, take the lead in propose architecture difference method（There is differential GPS in the past, but have no the report of difference base station positioning）,
With common automatic data collection differential data storehouse；The method being corrected with differential data.
2nd, the advantage of triangle polyester fibre and fingerprint matching positioning is combined, difference is carried out by using from the historical data of collection
Correction, makes positioning result more accurate, easily implements；
The method and system of the present invention may be achieved in many ways.For example, can by software, hardware, firmware or
Software, hardware, firmware any combinations come realize the present invention method and system.The said sequence of the step of for method is only
Order described in detail above is not limited in order to illustrate, the step of method of the invention, is especially said unless otherwise
It is bright.In addition, in certain embodiments, the present invention can be also embodied as recording program in the recording medium, these programs include
For realizing the machine readable instructions of the method according to the invention.Thus, the present invention also covering storage is used to perform according to this hair
The recording medium of the program of bright method.
Description of the invention provides for the sake of example and description, and is not exhaustively or by the present invention
It is limited to disclosed form.Many modifications and variations are obvious for the ordinary skill in the art.Select and retouch
State embodiment and be to more preferably illustrate the principle and practical application of the present invention, and one of ordinary skill in the art is managed
The present invention is solved so as to design the various embodiments with various modifications suitable for special-purpose.
Claims (11)
1. a kind of base station Differential positioning method of mobile terminal, it is characterised in that including：
Positioner receives the base station difference information that mobile terminal uploads, and base station difference information is saved in into base station difference information number
According to storehouse；Wherein, mobile terminal generation base station difference information, the base station difference information include：Gps coordinate, mobile terminal to clothes
The signal propagation time or the signal propagation time of multiple adjacent base stations and serving BS for base station and the one or more adjacent base stations of being engaged in
Difference or the signal intensity of serving BS and multiple adjacent base stations；
The positioner receives the Location Request of mobile terminal, and the Location Request includes mobile terminal to serving BS and one
The signal propagation times of individual or multiple adjacent base stations, the signal propagation time of multiple adjacent base stations and the serving BS is poor or services
Base station and the signal intensity of multiple adjacent base stations；
The positioner obtains one or more to match with the Location Request from the base station difference information database
Bar base station difference information, calculate the mobile terminal and passed to the signal propagation time of multiple base stations or the signal of multiple base stations
Broadcast the corrected value of the signal intensity of time difference or multiple base stations；The positioner is using corrected value in the Location Request
Mobile terminal to the signal propagation time of multiple base stations or the signal propagation time of multiple base stations be poor or the letter of multiple base stations
Number intensity is corrected respectively；
Wherein, it is whether identical and the degree of closeness of signal propagation time difference is as standard using serving BS and adjacent base station, it is described
It is poor that positioner obtains one or more base station to match with the Location Request from the base station difference information database
Divide information；Gps coordinate and serving BS, the position of adjacent base station in the difference information of base station, calculate multiple adjacent bases respectively
Stand and the actual propagation time difference of the serving BS；Wherein, in corrected value=actual propagation time difference-base station difference information
Signal propagation time difference；By each corrected value respectively to multiple adjacent base stations in the Location Request and the serving BS
Signal propagation time difference be corrected；The positioner is propagated according to the signal of the mobile terminal after correction to multiple base stations
The signal propagation time of time or multiple base stations is poor or the signal intensity of multiple base stations, and the position of the multiple base station,
Calculate the location information of mobile terminal.
2. the method as described in claim 1, it is characterised in that：
Mobile terminal is when using gps satellite positioning service, measurement mobile terminal to serving BS and one or more adjacent base stations
Signal propagation time, and obtain the signal propagation time difference or serving BS and multiple adjacent bases of multiple adjacent base stations and serving BS
The signal intensity stood；
The base station that mobile terminal connected and provided service is serving BS, and other base stations that mobile terminal can be measured that are adjacent base
Stand.
3. method as claimed in claim 2, it is characterised in that：
Multiple adjacent base stations and the signal propagation time of the serving BS in the Location Request after correction are poor, with reference to
The position of serving BS, adjacent base station, by arrival time difference algorithm, calculate the physical location for being positioned mobile terminal.
4. method as claimed in claim 2, it is characterised in that：
Passed so that whether serving BS and adjacent base station are identical with mobile terminal to serving BS and the signal of one or more adjacent base stations
As standard, the positioner obtains and the positioning degree of closeness between sowing time from the base station difference information database
Ask the one or more base station difference information to match；
The position of gps coordinate and serving BS, adjacent base station in the difference information of base station calculates mobile terminal to clothes respectively
The signal true propagation time for base station and the one or more adjacent base stations of being engaged in；Wherein：
Mobile terminal during corrected value=signal true propagation in m- base station difference information is adjacent to serving BS and one or more
The signal propagation time of base station；
By each corrected value respectively to the mobile terminal in the Location Request to serving BS and one or more adjacent base stations
Signal propagation time be corrected.
5. method as claimed in claim 4, it is characterised in that：
Mobile terminal in the Location Request after correction passes to serving BS and the signal of one or more adjacent base stations
Between sowing time, with reference to serving BS, the position of adjacent base station, according to arrival time algorithm, calculate the physical location for being positioned terminal.
A kind of 6. mobile terminal location device, it is characterised in that including：
Difference information receiving unit, for receiving the base station difference information of mobile terminal upload, base station difference information is saved in
Base station difference information database；Wherein, mobile terminal generation base station difference information, the base station difference information include：GPS is sat
The signal propagation time or multiple adjacent base stations and serving BS of mark, mobile terminal to serving BS and one or more adjacent base stations
Signal propagation time is poor or the signal intensity of serving BS and multiple adjacent base stations；
Location Request receiving unit, for receiving the Location Request of mobile terminal, the Location Request includes mobile terminal to clothes
Signal propagation time, multiple adjacent base stations and the signal propagation time of the serving BS for base station and the one or more adjacent base stations of being engaged in
Difference or the signal intensity of serving BS and multiple adjacent base stations；
Correction values calculation unit, for obtaining match with the Location Request one from the base station difference information database
Bar or a plurality of base station difference information, calculate signal propagation time or multiple base station of the mobile terminal to multiple base stations
Signal propagation time is poor or the corrected value of the signal intensity of multiple base stations；
Positional parameter corrects unit, for using signal of the corrected value to the mobile terminal in the Location Request to multiple base stations
The signal propagation time of propagation time or multiple base stations is poor or the signal intensity of multiple base stations is corrected respectively；
Localization computation unit, for the signal propagation time according to the mobile terminal after correction to multiple base stations or multiple base stations
Signal propagation time is poor or the signal intensity of multiple base stations, and the position of the multiple base station calculates mobile terminal
Location information；
Wherein, it is whether identical and the degree of closeness of signal propagation time difference is as standard using serving BS and adjacent base station, it is described
Correction values calculation unit obtains one or more to match with the Location Request from the base station difference information database
Base station difference information；Gps coordinate and serving BS of the correction values calculation unit in the difference information of base station, adjacent base station
Position, the actual propagation time difference of multiple adjacent base stations and the serving BS is calculated respectively；Wherein, corrected value=actual propagation
Signal propagation time difference in time difference-base station difference information；The positional parameter correction unit passes through each corrected value point
Other multiple adjacent base stations in the Location Request and the signal propagation time difference of the serving BS are corrected.
7. device as claimed in claim 6, it is characterised in that：
Mobile terminal is when using gps satellite positioning service, measurement mobile terminal to serving BS and one or more adjacent base stations
Signal propagation time, and the signal propagation time that obtains multiple adjacent base stations and serving BS is poor or serving BS and multiple neighbours
The signal intensity of base station；
The base station that mobile terminal connected and provided service is serving BS, and other base stations that mobile terminal can be measured that are adjacent base
Stand.
8. device as claimed in claim 7, it is characterised in that：
Multiple adjacent base stations of the localization computation unit in the Location Request after correction and the letter of the serving BS
Number propagation time difference, with reference to serving BS, the position of adjacent base station, by arrival time difference algorithm, calculates and is positioned mobile terminal
Physical location.
9. device as claimed in claim 7, it is characterised in that：
Passed so that whether serving BS and adjacent base station are identical with mobile terminal to serving BS and the signal of one or more adjacent base stations
As standard, the positioner obtains and the positioning degree of closeness between sowing time from the base station difference information database
Ask the one or more base station difference information to match；
The position difference of gps coordinate and serving BS of the correction values calculation unit in the difference information of base station, adjacent base station
Mobile terminal is calculated to serving BS and the signal true propagation time of one or more adjacent base stations；Wherein：
Mobile terminal during corrected value=signal true propagation in m- base station difference information is adjacent to serving BS and one or more
The signal propagation time of base station；
The positional parameter correction unit is by each corrected value respectively to the mobile terminal in the Location Request to service base
Stand and the signal propagation time of one or more adjacent base stations is corrected.
10. device as claimed in claim 9, it is characterised in that：
Mobile terminal of the localization computation unit in the Location Request after correction is to serving BS and one or more
The signal propagation time of individual adjacent base station, with reference to serving BS, the position of adjacent base station, according to arrival time algorithm, calculate and determined
The physical location of position terminal.
A kind of 11. GSM, it is characterised in that：
Including the mobile terminal location device as described in claim 6 to 10 any one.
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| CN201210583610.XA CN103906228B (en) | 2012-12-28 | 2012-12-28 | Base station Differential positioning method, positioner and the system of mobile terminal |
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| CN201210583610.XA CN103906228B (en) | 2012-12-28 | 2012-12-28 | Base station Differential positioning method, positioner and the system of mobile terminal |
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| CN107920327B (en) * | 2016-10-08 | 2021-08-17 | 中兴通讯股份有限公司 | Positioning method, device and system, positioning signal determination method and terminal |
| CN108112071B (en) * | 2016-11-11 | 2021-07-20 | 中兴通讯股份有限公司 | Positioning method, positioning base station, positioning server and positioning system |
| CN106851570B (en) * | 2017-01-19 | 2020-03-17 | 中国移动通信集团江苏有限公司 | Method and device for positioning mobile terminal based on MR |
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| CN110166501B (en) * | 2018-02-11 | 2021-06-29 | 华为技术有限公司 | Positioning method, terminal and server |
| CN110234163B (en) * | 2018-03-06 | 2022-03-29 | 中国移动通信集团海南有限公司 | Method, device, equipment and medium for positioning user terminal |
| CN112788733B (en) * | 2019-11-11 | 2021-11-12 | 大唐移动通信设备有限公司 | Clock deviation determining method and device |
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