Mobile terminal base station differential positioning method, positioning device and system

A mobile terminal and positioning device technology, which is applied in the transmission system, transmission monitoring, electrical components, etc., can solve the problems of large data volume, fingerprint stability error, and inability to cover all areas, so as to facilitate implementation, eliminate static errors, and improve The effect of positioning accuracy

Active Publication Date: 2014-07-02
CHINA TELECOM CORP LTD
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  • Abstract
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  • Claims
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Problems solved by technology

[0003] At present, the gpsOne system uses a FLC parameter for each cell to correct the propagation error, but this parameter needs to be measured manually, and the problem of dynamic drift is not solved
Multi-base station fi

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  • Mobile terminal base station differential positioning method, positioning device and system
  • Mobile terminal base station differential positioning method, positioning device and system
  • Mobile terminal base station differential positioning method, positioning device and system

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Embodiment Construction

[0024]The present invention will be described more fully hereinafter with reference to the accompanying drawings, in which exemplary embodiments of the invention are illustrated. The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention. The technical solution of the present invention will be described in various aspects below in conjunction with various figures and embodiments.

[0025] figure 1 It is a flow chart of an embodiment of the base station differential positioning method for a mobile terminal according to the pres...

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Abstract

The invention discloses a mobile terminal base station differential positioning method. The method comprises the steps that a positioning device acquires one or more pieces of base station differential information matching a positioning request from a base station differential information database; the signal propagation time from a mobile terminal to a number of base stations, the signal propagation time difference of a number of base stations, or the signal intensity correction value of each base station is calculated; the positioning device uses the correction value to respectively correct each parameter; and the positioning device calculates the positioning information of the mobile terminal according to the corrected parameters. According to the mobile terminal base station differential positioning method, the positioning device and the system, which are provided by the invention, the multi base station information of one or more known positions is used to carry out differential correction on the multi base station information of an unknown position; a static error caused by dynamic errors of base station signal drift and the like and antenna feeder length and the like is eliminated; the positioning accuracy is improved; and a common terminal can be used to automatically collect differential data, which is convenient for implementation.

Description

technical field [0001] The present invention relates to the technical field of mobile communication positioning, in particular to a base station differential positioning method, positioning device and system for a mobile terminal. Background technique [0002] At present, the main multi-base station positioning methods include: TOA, TDOA, etc. The principle is to calculate the corresponding distance by measuring the propagation time of the signal from the base station to the terminal, and then calculate the terminal based on multiple distances and known base station locations. The latitude and longitude coordinates of . There are errors in the measurement of the signal propagation time from the base station to the terminal. The sources include the length of the antenna feeder and the phase drift of the base station signal. The distance measurement error caused by it can reach more than 100 meters, and the error is transmitted to the final positioning result. [0003] At pre...

Claims

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Application Information

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IPC IPC(8): H04W64/00H04B17/00
Inventor 梁宇杰杨杰王爱宝卢燕青
Owner CHINA TELECOM CORP LTD
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