CN1933658A - Method and apparatus for realizing mobile station positioning in radio communication system - Google Patents
Method and apparatus for realizing mobile station positioning in radio communication system Download PDFInfo
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- CN1933658A CN1933658A CNA2005101344017A CN200510134401A CN1933658A CN 1933658 A CN1933658 A CN 1933658A CN A2005101344017 A CNA2005101344017 A CN A2005101344017A CN 200510134401 A CN200510134401 A CN 200510134401A CN 1933658 A CN1933658 A CN 1933658A
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Abstract
A method for positioning mobile station in mobile communication system includes measuring out receiving power value of different cell signal in receiving emission antenna with the same position at mobile station, sending measured value to network and calculating out direction angle information of mobile station to cell by network according to received value and direction angle of each cell, finally positioning mobile station by network according to direction angle relative to cell and TA value.
Description
Technical field
The present invention relates to wireless communication technology field, relate in particular to a kind of wireless location technology that in wireless communication system, realizes.
Background technology
In wireless communication system, attract tremendous attention based on the mobile location service of customer location, along with the development of mobile positioning technique, mobile location service will bring rich profit to operator.
At present, there have been some operators that the corresponding mobile positioning service is provided in the 3G network that it is opened in the recent period, thereby can be, and can guide the user to seek hotel, dining room, shop and some other user's interest commercial facility by electronic chart for the user provides in detail, the numerical map of real-time update is informed user's particular location.
At present, comprising a kind of wireless location technology based on moving table measuring report in mobile positioning technique, will be example with the GSM network below, and the existing implementation that wireless location is carried out in report based on moving table measuring is described.
In GSM (global system for mobile communications) network; in order to reduce the complexity of handling at mobile position estimation; minimizing is to the change of the network that built up; and to having the change of travelling carriage; when positioning design for scheme; usually can select to utilize travelling carriage or base station measurable system resource in network as far as possible, carry out the estimation of travelling carriage geographical location information.Wherein, described system resource comprises: RxLEV (signal strength signal intensity), CI (cell identification number), TA (Timing Advance) etc.
At present, in the GSM network, the specific implementation of utilizing the above-mentioned system resource information that can measure to carry out mobile position estimation generally includes a variety of, mainly can reduce two types, is respectively:
(1) FSM (field intensity reflection method, Field Strength Mapping) method
In the FSM method, be specially: at first, utilize a test travelling carriage, as mobile phone, the related data and the corresponding mobile phone location in the whole fixer network zone that mobile phone for measuring is obtained are stored in the data bank; Afterwards, when mobile phone needs localization process, then the signal of storing in the signal characteristic value of the measured acquisition of mobile phone and the data bank is compared, thereby can determine corresponding mobile phone location.
Yet, in the FSM method, owing to need carry out large-scale signal measurement, also need simultaneously a large amount of signal storage in travelling carriage, thereby FSM locate mode previous work amount in the specific implementation is bigger, and, in follow-up maintenance work,, therefore cause safeguarding also more complicated of worker owing to need safeguard to a large amount of information.
(2) DCM (distance calculation method, Distance Calculation Method) method
In the DCM method, mainly be the signal characteristic value that obtains according to mobile phone or base station measurement, as according at as described in the measured value of system resource information, utilize corresponding Mathematical Modeling, carry out position calculation by structure math equation or equation group.Relative FSM method, less input for the needed previous work of this localization process implementation, promptly need not carry out the storage of mass data in travelling carriage, thereby occupation mode is more flexible, and also stronger to the adaptability of variations such as network configuration.
In the DCM method, need to adopt the model of channel fading to carry out location estimation.But, realize the location estimation that precision is higher because the complexity of wireless environment reflects the characteristic of channel more exactly thereby cause being difficult to obtain a proper model; And, in using the DCM procedure, when wireless environment changes, also needing model parameter is done corresponding the correction, need carry out the storage and the processing of a certain amount of signal measurement and signal this moment, so maintenance workload is bigger.In addition, because great majority all are directional cells in the real network, the gain of sub-district transmitting antenna on all directions is different, for this situation, be difficult to effectively evade utilizing the DCM method to carry out in the position estimation procedure by model, therefore, also just can't obtain location estimation result accurately.
Summary of the invention
The purpose of this invention is to provide method and the device of realizing mobile position estimation in a kind of wireless communication system, thereby can calculate the position of determining the travelling carriage in the wireless communication system comparatively easily, effectively improve treatment effeciency at mobile position estimation.
The objective of the invention is to be achieved through the following technical solutions:
The invention provides the method that realizes mobile position estimation in a kind of wireless communication system, comprising:
A, measurement travelling carriage receive the received power value of the identical different districts signal in transmitting antenna position;
B, calculate according to the deflection of the received power value of the different districts signal that measure to obtain and each sub-district and to determine the deflection information of travelling carriage with respect to transmitting antenna position, sub-district;
C, carry out mobile position estimation according to described deflection information with respect to transmitting antenna position, sub-district.
Described steps A comprises:
Determine two adjacent sub-districts at travelling carriage place according at least one group of the measurement report that travelling carriage reports, and measure the performance number that travelling carriage receives at least one group of described two neighbor cell signals at each identical sub-district of transmitting antenna position.
Described step B comprises:
According to the signal measurement result of travelling carriage,, calculate the deflection of travelling carriage with respect to each transmitting antenna position, sub-district in conjunction with the deflection of each sub-district and the directional characteristic of transmitting antenna to the identical different districts in transmitting antenna position.
Described step B specifically comprises:
B1, foundation are used to calculate the equation group of travelling carriage with respect to the deflection information of each sub-district:
A+B＝β-α；
PT1(A)＝PR1+D1；
PT2(B)＝PR2+D2；
Wherein, A and B be respectively the travelling carriage that need find the solution with respect to the deflection of transmitting antenna position respectively with the angle of the first sub-district deflection and the second sub-district deflection, β and α are respectively the deflection value of first sub-district and second sub-district, PT1 (A) and PT2 (B) first sub-district and second sub-district transmission power level on this direction of location of mobile station, PR1 and PR2 are the signal power value that travelling carriage receives first sub-district and second sub-district, D1 and D2 are the decay to travelling carriage of first sub-district and second cell signal, and D1=D2;
B2, the equation group of listing according to step B1 calculate determine described travelling carriage with respect to the deflection of base station transmit antennas position respectively with the included angle A and the B of the first sub-district deflection and the second sub-district deflection.
Described step C comprises:
When calculate obtaining travelling carriage,, and adopt the auxiliary positional information of determining travelling carriage of Timing Advance TA then according to this deflection information with respect to the deflection information of transmitting antenna position, sub-district.
Described step C comprises:
When calculate obtaining travelling carriage with respect to the deflection information of two or more different transmitting antenna positions, then determine the straight line at travelling carriage place respectively, and determine the positional information of travelling carriage according to the intersection point of each straight line according to deflection information with respect to the different transmit antennas position.
The present invention also provides the device of realizing mobile position estimation in a kind of wireless communication system, comprising:
Received signal power measurement module: be arranged in the travelling carriage, be used to measure the received power value of the signal of the variant sub-district that need report;
Deflection information calculations module: utilize the directional characteristic of transmitting antenna, the received power measurement result that reports according to travelling carriage and each sub-district transmitting antenna positional information calculation travelling carriage are with respect to the deflection information of each transmitting antenna position, sub-district;
The localization process module; Calculate the travelling carriage that obtains is determined travelling carriage with respect to the deflection information of each transmitting antenna position, sub-district positional information according to deflection information calculations module.
Described localization process module comprises:
TA auxiliary positioning module: determine distance between travelling carriage and the base station by the TA assist location;
The first location of mobile station information calculations module: the positional information that travelling carriage of determining with respect to the deflection information of transmitting antenna position, a sub-district and TA auxiliary positioning module according to location of mobile station and the distance between the base station are determined travelling carriage.
Described localization process module comprises:
The second location of mobile station information calculations module: the intersection point that intersects with respect to the deflection of two or more different transmitting antenna positions according to location of mobile station is determined the positional information of travelling carriage.
As seen from the above technical solution provided by the invention, the present invention is that the information in the measurement report that reports according to travelling carriage is determined the deflection information of travelling carriage with respect to the transmitting antenna position of one or more sub-districts, determine the position of travelling carriage, therefore, the present invention can calculate the position of determining the travelling carriage in the wireless communication system comparatively easily, effectively improves the treatment effeciency at mobile position estimation.
And, because being the measurement report that reports according to travelling carriage and known each transmitting antenna position, sub-district, antenna direction characteristic and deflection, the present invention carries out the measurement of location of mobile station, therefore, Maintenance free lot of data information in carrying out the mobile position estimation processing procedure, thus the maintenance workload that produces because of mobile position estimation can effectively be reduced.
Description of drawings
Fig. 1 is a travelling carriage deflection schematic diagram;
Fig. 2 is the schematic diagram of travelling carriage based on deflection information location;
Fig. 3 is a kind of specific implementation process schematic diagram of the method for the invention;
Fig. 4 is the specific implementation structural representation one of device provided by the invention;
Fig. 5 is the specific implementation structural representation two of device provided by the invention.
Embodiment
Core of the present invention is to adopt signal strength signal intensity RxLEV, cell identification CI, when resources such as Timing Advance TA are done the location computing, avoid the influence of the complexity and the sub-district transmitter antenna gain (dBi) directivity of wireless channel as far as possible, thereby obtain the positioning result of degree of precision, reduce maintenance workload simultaneously as far as possible.
More specifically say, core concept of the present invention is in the measurement report that travelling carriage reports, will be to the measurement result of the identical different districts in transmitting antenna position as one group of data, then, by these group of data, just can obtain the deflection of travelling carriage, at last, just can accurately determine the positional information of travelling carriage according to the deflection information of travelling carriage with respect to this transmitting antenna position.
In wireless communication system,, just can guarantee to exist at least a group of comprising current area to carry out the travelling carriage deflection and measure needed measurement data as long as the current area at travelling carriage place is a directional cell.If also there is adjacent directional cell, then can also obtain the measurement data that two groups or more is used to measure the travelling carriage deflection.
As shown in Figure 1, when only obtaining one group of measurement data, then can adopt the auxiliary definite location of mobile station of TA (Timing Advance), be specially: at first, determine the deflection information of travelling carriage according to one group of data, and then determine with the base station transmit antennas position to be the ray at a location of mobile station place of initial point, then, determine the distance of travelling carriage according to the TA subsidiary again apart from base station transmit antennas, this moment travelling carriage then to be expressed as one be the center of circle with the base station transmit antennas in the position, with the distance value is the circular trace of radius, like this, just can be determined the positional information of travelling carriage by the crosspoint of described ray and circular trace.
As shown in Figure 2, when obtaining two groups or more for the base station measurement data of diverse location, then can determine the ray at two location of mobile station places according to the deflection information of measuring the travelling carriage that obtains at least, and determine location of mobile station information by the crosspoint of two definite rays of two azimuths.
For the present invention there being further understanding, describe below in conjunction with the specific implementation process of accompanying drawing to the method for the invention.
At first, the computational process of the deflection of the travelling carriage that the method for the invention is related in specific implementation process describes, and specifically may further comprise the steps:
The first step: determine that travelling carriage receives the received power value of the different districts signal of same transmit aerial position, and the deflection of each sub-district;
With Fig. 2 is example, determines that travelling carriage is respectively PR1, PR2 to the measurement result of the received signal of 1 sub-district on same base station location and 2 sub-districts, and the deflection of 1 sub-district and 2 sub-districts is α, β respectively;
Second step: be configured to calculate the equation group of finding the solution the travelling carriage deflection according to travelling carriage at the measurement result of different districts signal, specific as follows:
A+B＝β-α；
PT1(A)＝PR1+D1；
PT2(B)＝PR2+D2；
Wherein, A is the principal direction angle of travelling carriage direction and 1 sub-district, and B is the principal direction angle of travelling carriage direction and 2 sub-districts; D1 is the decay of 1 cell signal to travelling carriage, and D2 is the decay of 2 cell signals to travelling carriage; PT1 is the transmitting power of 1 sub-district on the travelling carriage direction, and is the function of A, and PT2 is the transmitting powers of 2 sub-districts on the travelling carriage direction, and is the function of B, and PT1 and PT2 determine according to the transmitting power of base station and antenna direction gain diagram;
In above-mentioned equation group, because sub-district 1 and 2 base stations, sub-district are in same geographical position, sub-district 1 transmits and can think identically with the transmission path that sub-district 2 transmits signals to travelling carriage, therefore, can think that D1 equates with D2, i.e. D1=D2.
The 3rd step: find the solution above equation group, solve the deflection A and the B of travelling carriage, at this moment, just can determine that travelling carriage is just on the ray that this deflection is determined, shown in the empty arrow line among Fig. 2.
The present invention is further illustrated with an example that utilizes the more specific location information that travelling carriage deflection information determines travelling carriage more below.
This specific embodiment as shown in Figure 2, wherein, 2 positions, base station are (104.1576,36.54742), 1 position, base station is (104.1288,36.54573), in Fig. 2, determine accordingly travelling carriage positional information processing procedure as shown in Figure 3, specifically comprise:
Step 31: the measurement report that obtains that travelling carriage reports to each sub-district of base station 2;
Known base station 2 each cell transmit power are identical, and travelling carriage is 38dbi to the measurement report to 1 sub-district of base station 2 that network side reports, and are 16dbi to the measurement report of 2 sub-districts of base station 2, are 32dbi to the measurement report of 3 sub-districts of base station 2;
Step 32: the equation group of calculating the deflection informational needs of travelling carriage according to foregoing method construct, and find the solution the relatively deflection of each sub-district of travelling carriage according to described equation group, the method front of concrete calculating travelling carriage deflection is described, and no longer describes in detail herein;
Step 33: can determine that according to the deflection information of the relative transmitting antenna of the travelling carriage of finding the solution acquisition position travelling carriage is on L1 direction shown in Figure 2.L1 and is partial to 1 sub-district between 1 sub-district and 3 sub-districts.
Step 34: the measurement report that obtains that travelling carriage reports at each sub-district of base station 1, and base station 1 each cell transmit power is identical; Suppose that the measurement report that obtains is: the measurement report to 1 sub-district of base station 1 that travelling carriage reports is 34dbi, is 35dbi to the measurement report of 2 sub-districts of base station 1;
Step 35: structure calculates the equation group of travelling carriage with respect to the deflection informational needs of the transmitting antenna position of base station 2, and finds the solution the deflection information that obtains travelling carriage;
Step 36: can determine travelling carriage on the L2 direction according to the deflection information of travelling carriage, L2 is partial to the direction of 2 sub-districts in 1 sub-district and 2 sub-district parts omitted;
Step 37: determine the intersection point that L1 and L2 intersect, this intersection point is the position of travelling carriage, thereby obtains the location estimation result of travelling carriage.
Need to prove that step 31 to step 33 and step 34 concerns to there is no between the step 36 successively to carry out in above-mentioned processing procedure, as long as calculate travelling carriage promptly can be determined travelling carriage by step 37 with respect to the deflection information of two base stations location estimation result.
In addition, for situation shown in Figure 2, suppose to have obtained the azimuth information of travelling carriage in base station 1 or base station 2 in a calculating, then can adopt the auxiliary location estimation result who obtains travelling carriage of TA, be specially: measure the circular trace positional information of determining travelling carriage according to TA respectively, determine the straight path information of travelling carriage according to described deflection information, afterwards, just can be with the intersection point of circular trace and straight path as location estimation result at this travelling carriage.
The present invention also provides the device of realizing mobile position estimation in a kind of wireless communication system, as shown in Figure 4 and Figure 5, specifically comprises following functional module:
(1) received signal power measurement module
This module is arranged in the travelling carriage, is used to measure the signal power value information that travelling carriage receives the identical different districts of base station location;
(2) deflection information calculations module
Calculate the deflection information of travelling carriage with respect to each sub-district according to the measurement result of received signal power measurement module and the deflection of each sub-district, the concrete calculating travelling carriage mode front of the deflection information of each sub-district is relatively described, and no longer describes in detail herein;
(3) localization process module
Calculate the travelling carriage that obtains is determined travelling carriage with respect to the deflection information of each sub-district positional information according to deflection information calculations module, in concrete localization process process, according to the amount of the travelling carriage deflection information that obtains, specifically can adopt following two kinds of concrete localization process module results to realize;
First kind of localization process module specifically comprises as shown in Figure 4:
TA auxiliary positioning module: determine distance between travelling carriage and the base station by the TA assist location;
The first location of mobile station information calculations module: the positional information that travelling carriage of determining according to the directional information of location of mobile station and TA auxiliary positioning module and the distance between the base station are determined travelling carriage.
Second kind of localization process module specifically comprises as shown in Figure 5:
The second location of mobile station information calculations module: determine the deflection information calculations location of mobile station directional information of at least two base station locations relatively according to being used for, determine the intersection point of both direction, and the described intersection point that will determine is as the positional information of travelling carriage.
In sum, because the information in the measurement report that the present invention reports according to travelling carriage is determined the deflection information of travelling carriage with respect to base station location, determine the position of travelling carriage, therefore, the present invention can calculate the position of determining the travelling carriage in the wireless communication system comparatively easily, effectively improves the treatment effeciency at mobile position estimation.
The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.
Claims (9)
1, realize the method for mobile position estimation in a kind of wireless communication system, it is characterized in that, comprising:
A, measurement travelling carriage receive the received power value of the identical different districts signal in transmitting antenna position;
B, calculate according to the deflection of the received power value of the different districts signal that measure to obtain and each sub-district and to determine the deflection information of travelling carriage with respect to transmitting antenna position, sub-district;
C, carry out mobile position estimation according to described deflection information with respect to transmitting antenna position, sub-district.
2, realize the method for mobile position estimation in the wireless communication system according to claim 1, it is characterized in that described steps A comprises:
Determine two adjacent sub-districts at travelling carriage place according at least one group of the measurement report that travelling carriage reports, and measure the performance number that travelling carriage receives at least one group of described two neighbor cell signals at each identical sub-district of transmitting antenna position.
3, realize the method for mobile position estimation in the wireless communication system according to claim 1, it is characterized in that described step B comprises:
According to the signal measurement result of travelling carriage,, calculate the deflection of travelling carriage with respect to each transmitting antenna position, sub-district in conjunction with the deflection of each sub-district and the directional characteristic of transmitting antenna to the identical different districts in transmitting antenna position.
4, realize the method for mobile position estimation in the wireless communication system according to claim 1, it is characterized in that described step B specifically comprises:
B1, foundation are used to calculate the equation group of travelling carriage with respect to the deflection information of each sub-district:
A+B＝β-α；
PT1(A)＝PR1+D1；
PT2(B)＝PR2+D2；
Wherein, A and B be respectively the travelling carriage that need find the solution with respect to the deflection of transmitting antenna position respectively with the angle of the first sub-district deflection and the second sub-district deflection, β and α are respectively the deflection value of first sub-district and second sub-district, PT1 (A) and PT2 (B) first sub-district and second sub-district transmission power level on this direction of location of mobile station, PR1 and PR2 are the signal power value that travelling carriage receives first sub-district and second sub-district, D1 and D2 are the decay to travelling carriage of first sub-district and second cell signal, and D1=D2;
B2, the equation group of listing according to step B1 calculate determine described travelling carriage with respect to the deflection of base station transmit antennas position respectively with the included angle A and the B of the first sub-district deflection and the second sub-district deflection.
5, according to the method that realizes mobile position estimation in claim 1,2, the 3 or 4 described wireless communication systems, it is characterized in that described step C comprises:
When calculate obtaining travelling carriage,, and adopt the auxiliary positional information of determining travelling carriage of Timing Advance TA then according to this deflection information with respect to the deflection information of transmitting antenna position, sub-district.
6, according to the method that realizes mobile position estimation in claim 1,2, the 3 or 4 described wireless communication systems, it is characterized in that described step C comprises:
When calculate obtaining travelling carriage with respect to the deflection information of two or more different transmitting antenna positions, then determine the straight line at travelling carriage place respectively, and determine the positional information of travelling carriage according to the intersection point of each straight line according to deflection information with respect to the different transmit antennas position.
7, realize the device of mobile position estimation in a kind of wireless communication system, it is characterized in that, comprising:
Received signal power measurement module: be arranged in the travelling carriage, be used to measure the received power value of the signal of the variant sub-district that need report;
Deflection information calculations module: utilize the directional characteristic of transmitting antenna, the received power measurement result that reports according to travelling carriage and each sub-district transmitting antenna positional information calculation travelling carriage are with respect to the deflection information of each transmitting antenna position, sub-district;
The localization process module; Calculate the travelling carriage that obtains is determined travelling carriage with respect to the deflection information of each transmitting antenna position, sub-district positional information according to deflection information calculations module.
8, realize the device of mobile position estimation in the wireless communication system according to claim 7, it is characterized in that described localization process module comprises:
TA auxiliary positioning module: determine distance between travelling carriage and the base station by the TA assist location;
The first location of mobile station information calculations module: the positional information that travelling carriage of determining with respect to the deflection information of transmitting antenna position, a sub-district and TA auxiliary positioning module according to location of mobile station and the distance between the base station are determined travelling carriage.
9, realize the device of mobile position estimation in the wireless communication system according to claim 7, it is characterized in that described localization process module comprises:
The second location of mobile station information calculations module: the intersection point that intersects with respect to the deflection of two or more different transmitting antenna positions according to location of mobile station is determined the positional information of travelling carriage.
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| CN110462418B (en) * | 2017-02-02 | 2024-02-06 | 弗劳恩霍夫应用研究促进协会 | Positioning of drones using millimeter wave beam infrastructure |
| CN108471593A (en) * | 2017-02-23 | 2018-08-31 | 普天信息技术有限公司 | A kind of static immobilization method and apparatus based on LTE system |
| CN108471593B (en) * | 2017-02-23 | 2021-02-12 | 普天信息技术有限公司 | Static positioning method and device based on LTE system |
| CN108303093A (en) * | 2018-01-31 | 2018-07-20 | 中国联合网络通信集团有限公司 | A kind of indoor orientation method and device |
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