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Method for positioning moving platform

A technology for mobile station and positioning results, applied in the field of positioning, can solve the problems of reduced positioning accuracy, no results, large antenna opening angle, etc., to achieve the effects of reducing positioning errors, good statistical results, and improving capacity

Inactive Publication Date: 2009-07-08
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] 3) If there is only one TOA in a group of TOAs, then the result cannot be obtained only based on the obtained TOA
AOA positioning usually requires the base station to adopt multiple antennas with very narrow angles, or use smart antennas to form very narrow beams, so as to ensure the accuracy of positioning, while CDMA systems usually use three-sector coverage or omnidirectional coverage, and the antenna The angle is very large, therefore, using AOA alone to locate the mobile station will greatly reduce the accuracy of positioning

Method used

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Embodiment Construction

[0036] The core idea of ​​the present invention is: the network side obtains the credibility of the measurement data of different base station antennas in each site; according to the obtained credibility, respectively select the measurement data of the base station antenna with the highest reliability in each site, And according to the measurement data of different base station antennas, the angle of arrival of the mobile station in each site is obtained respectively; according to the measurement data selected in each site, the reliability corresponding to the selected measurement data and the obtained angle of arrival, the position of the mobile station is obtained information.

[0037] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and preferred embodiments.

[0038] figure 1 It is a flow chart of positioning mobile st...

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Abstract

This invention discloses a method of mobile positioning, including: A. the network side obtains the credibility of the measurement data form different base-station antennas in the station-sites. B. According to the results, it selects the data with the highest credibility and obtains the arrival angles of mobiles in different base stations according to the data. C. According to selected measurement data, the corresponding credibility and the obtained angles, it gets the mobile location information.

Description

technical field [0001] The invention relates to positioning technology, especially a method for positioning a mobile station (MS, Mobile Station) in a code division multiple access (CDMA) system. Background technique [0002] The positioning service is an important service in the wireless cellular communication system. In the CDMA system, the commonly used mobile station positioning methods include Assisted Global Positioning System (A-GPS) positioning, advanced forward link triangulation (AFLT), enhanced Type forward link triangulation (EFLT), cell positioning (Cell_ID), etc. These positioning methods actually refer to the measurement means of the data required for positioning. After obtaining the measurement data and other related information, appropriate positioning methods must be used. In order to obtain the location information of the mobile station, such as latitude and longitude, altitude, moving speed and direction, etc., the calculation method is used for calculati...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W4/02G01S5/02H04W64/00
Inventor 张志东
Owner HUAWEI TECH CO LTD
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