Mobile terminal location method, location server and serving base station

A technology of positioning server and mobile terminal, applied in the field of communication, can solve the problems of large measurement distance error, can not effectively meet the requirements of FCC positioning accuracy, and achieve the effect of ensuring accuracy

Active Publication Date: 2013-07-17
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present invention provides a mobile terminal positioning method, which aims to solve the problem that the existing technology cannot effectively meet the FCC positioning accuracy requirements when the measurement distance error between the mobile terminal and the base station is relatively large

Method used

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  • Mobile terminal location method, location server and serving base station
  • Mobile terminal location method, location server and serving base station
  • Mobile terminal location method, location server and serving base station

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0026] figure 2 The implementation flow of the mobile terminal positioning method provided by Embodiment 1 of the present invention is shown, and the process of the method is described in detail as follows:

[0027] In step S201, according to the measured distance between the mobile terminal and at least two positioning base stations and the actual distance between the at least two positioning base stations, the initial position of the mobile terminal is calculated by using the nonlinear least squares overall structure approximation positioning method coordinate.

[0028] In this embodiment, the positioning base station is a base station from which the mobile terminal can receive signals. As for the measured distance between the mobile terminal and at least two positioning base stations and the actual distance between the at least two positioning base stations (for example, the measured distance between the mobile terminal and the positioning base station a, the positioning ...

Embodiment 2

[0086] Figure 4 It shows the implementation process of the mobile terminal positioning method provided by the second embodiment of the present invention, and the process of the method is described in detail as follows:

[0087] In step S401, according to the measured distance between the mobile terminal and at least two positioning base stations and the actual distance between the at least two positioning base stations, the initial position of the mobile terminal is obtained by using the nonlinear least squares overall structure approximation positioning method coordinate.

[0088]In this embodiment, step S401 is the same as step S201 in the first embodiment. For the specific implementation process, refer to the relevant description of step S201 in the first embodiment, and details are not repeated here.

[0089] In step S402, obtain the measurement distance error between the mobile terminal and each positioning base station, judge whether there is at least one measurement d...

Embodiment 3

[0112] Figure 5 The composition structure of the positioning server provided by the third embodiment of the present invention is shown, and for the convenience of description, only the parts related to the embodiment of the present invention are shown.

[0113] The positioning server may be a software unit, a hardware unit or a combination of software and hardware running in each mobile terminal positioning system.

[0114] The positioning server 5 includes an initial position determination unit 51 and a final position output unit 52, and its specific functions are as follows:

[0115] The initial position determination unit 51 is configured to calculate the position of the mobile terminal by using the nonlinear least squares overall structure approximation positioning method according to the measured distance between the mobile terminal and at least two positioning base stations and the actual distance between the at least two positioning base stations. The initial position...

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Abstract

The invention is applicable to the field of communication and provides a mobile terminal location method, a location server and a serving base station. The method comprises the steps of adopting a nonlinear least square integral structure approach location method to obtain initial position coordinates of a mobile terminal according to measured distances between the mobile terminal and at least two location base stations and an actual distance between the at least two location base stations; and enabling the initial position coordinates to serve as initial iteration points, obtaining an optimal solution meeting location model constraint conditions by solving a location model, and enabling the optimal solution to serve as final position coordinates of the mobile terminal to be output, wherein the location base stations are base stations, which are capable of receiving signals, of the mobile terminal, d<ky> represents measured distances between the mobile terminal and the location base stations, x<k> represents position coordinates of a kth location base station, and y represents position coordinates of the mobile terminal. The location precision of the mobile terminal can still be guaranteed when errors of measuring distances between the mobile terminal and the location base stations are large.

Description

technical field [0001] The invention belongs to the technical field of communications, and in particular relates to a positioning method for a mobile terminal, a positioning server and a serving base station. Background technique [0002] Cellular mobile communication system positioning technology is based on mobile communication systems such as Global System For Mobile Communication (GSM), Code Division Multiple Access (CDMA), and Universal Mobile Telecommunications System (UMTS). Or Global Positioning System (Global Positioning System, GPS), GLONAS, Global Navigation Satellite System (Galileo) and Beidou and other satellite positioning systems, and by detecting the characteristic parameters of the radio wave propagation signal between the mobile terminal and the base station (such as signal field strength, Propagation time or time difference, signal incident angle, etc.), and then estimate the geometric position of the mobile terminal according to the relevant positioning ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W64/00
CPCH04W64/00
Inventor 罗新龙陈德肖登坤崔杰李汐
Owner HUAWEI TECH CO LTD
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