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A method for positioning the mobile station

A mobile station and algorithm technology, applied in positioning, communication between multiple stations, measuring devices, etc., can solve the problems of low accuracy of estimated value of MS position coordinates, insufficient use of redundant information, etc., to save resources , Improve the effect of positioning accuracy

Inactive Publication Date: 2009-02-11
HUAWEI TECH CO LTD
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  • Description
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Problems solved by technology

[0004] The disadvantage of the TOA-based positioning method in the prior art is that the method independently considers the distance estimation between each BS and MS, and does not make full use of the redundant information provided by the topological structure between each BS and between BS and MS
The accuracy of the estimated value of the MS position coordinates measured by this method is not high

Method used

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  • A method for positioning the mobile station
  • A method for positioning the mobile station
  • A method for positioning the mobile station

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Embodiment Construction

[0027] The invention provides a method for positioning a mobile station.

[0028] Describe the method of the present invention in detail below in conjunction with accompanying drawing, the schematic diagram of the principle of the embodiment of the method of the present invention is as follows figure 2 As shown, the specific processing flow of this embodiment is as follows image 3 shown, including the following steps:

[0029] Step 3-1: Obtain the first type of distance estimation value Ri between the BS and the MS through TOA ranging technology.

[0030] In this embodiment, without loss of generality, the number of positioning base stations is 5, which are respectively BSi (i=1, 2, . . . 5).

[0031] Assume that the position coordinates of the base station BSi (i=1, 2, ... 5) are (xi, yi), and the real position coordinates of the mobile station MS are (x, y).

[0032] First, the existing TOA ranging technology of the cellular positioning network is used to obtain the dis...

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Abstract

The invention relates to a method for positioning mobile station. Wherein, it comprises that based on the evaluated distance between MS and BS (base station), obtaining the evaluated coordinate of MS; using iterative method to refresh the evaluated distance and the coordinate of MS; when the average value of the several evaluated coordinates is lower than preset value, using the final evaluated coordinate as final coordinate. The invention can improve the position accuracy.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to a method for positioning a mobile station. Background technique [0002] Most of the mainstream communication service providers currently use cellular networks. The cellular network is to divide the service of MS (mobile station) into regular hexagonal sub-areas, and each cell has a base station, forming a structure that resembles a "beehive". Common cellular network types include: GSM (Global System for Mobile Communications) network, CDMA (Code Division Multiple Access) network, 3G (Third Generation Mobile Communications) network and other networks. [0003] Cellular network positioning methods can be divided into SSOA (field strength measurement method), ESSOA (enhanced field strength measurement method) / FingerPrint (multipath fingerprint method), AOA (arrival angle measurement method), TOA / TDOA (time of arrival / time difference measurement method) and mixed parameter p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04Q7/38H04Q7/32G01S5/02H04B7/26H04W64/00
Inventor 李美
Owner HUAWEI TECH CO LTD
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