Method of locating mobile terminal by using base station air interface data

Abstract

In order to solve problems that the location precision of a base station-based location algorithm for wireless communication in the prior art is low, and the location precision is largely influenced in a condition of non-line-of-sight (nLOS) propagation, the invention provides a method of locating a mobile terminal by using base station air interface data. Based on coordinates of a serving cell and coordinates of a neighborhood cell, the initial position of the mobile terminal is estimated; then, through the receiving power of the mobile terminal, setting of an nLOS propagation weight in a TOA location algorithm optimizes the previously-obtained initial position, and the final position of the mobile terminal is acquired; or, after setting of the nLOS propagation weight in an AOA (Angle of Arrival) location algorithm optimizes the previously-obtained initial position, the final position of the mobile terminal is acquired. The method of the invention has the beneficial effects that the influences on the location precision by the nLOS propagation in the TOA location algorithm and the AOA location algorithm in the prior art are reduced and the location accuracy of the mobile terminal is thus improved.

Description

technical field [0001] The invention relates to the technical field of locating by using communication technology, in particular to a method for locating a mobile terminal by using air interface data of a base station. Background technique [0002] Traditional GPS positioning technology has the advantages of wide coverage and high accuracy (up to several meters). Its main disadvantage is that there are coverage blind spots, such as indoors or urban areas with many tall buildings, where mobile terminals cannot establish connections with satellites, resulting in positioning failures. In addition, GPS consumes more power during positioning, and it takes a long time to obtain position information for the first time; GPS can be manually switched on and off, so it is not possible to obtain GPS positioning data at any time. [0003] With the vigorous development of wireless communication technology, the density of cellular base stations is getting higher and higher, the coverage ar...

AI Technical Summary

Problems solved by technology

[0009] In order to solve the problems of low positioning accuracy existing in the base station-based positioning algorithm of wireless communication in the prior art, the positioning accuracy will be greatly affected in the case of non-line-of-sight nLOS propagation, or the antenna array with strong directivity needs to be equipped, etc., the present invention A method for positioning mobile terminals using base station air interface data is proposed

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