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Method for positioning a mobile station

A technology of mobile stations and base stations used in positioning, beacon systems using radio waves, measuring devices, etc.

Inactive Publication Date: 2005-05-18
NOKIA CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the stated disadvantages, OTD values ​​are only an estimate of the "correct" propagation time difference

Method used

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  • Method for positioning a mobile station
  • Method for positioning a mobile station
  • Method for positioning a mobile station

Examples

Experimental program
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Effect test

Embodiment Construction

[0049] figure 1 Problems related to OTD positioning are shown by using an example, such as those caused by delays caused by signal processing within repeaters 106 and 107 and, on the other hand, signal propagation along their paths . exist figure 1 In the example of , mobile station 117 communicates with base station 101 . The mobile station is initially at point 115, where the signal from base station 101 is strongest, so mobile station 117 selects base station 101 as the serving base station. The mobile station begins to move around obstacle 120 to still communicate with base station 101 , but the signal between mobile station 117 and base station 101 now passes through repeaters 106 and 107 . Since the signal is strongest on the route 116 traveled by the mobile station 117, the mobile station 117 will not attach to the base stations 103, 104 or 105. When the mobile station has reached the end of the route 116, the signal from the base station 101 is still the strongest,...

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Abstract

The present invention provides a method for locating a mobile station by means of a base station in a cellular wireless network. When locating the mobile station, the base station is selected such that the base station is in the communication path between the mobile station and the base station, Communication with the mobile station is carried out without going through some determined repeaters. The method improves positioning accuracy compared to prior art methods such as OTD or E-OTD methods.

Description

technical field [0001] The invention relates to mobile communication technology and in particular to positioning a mobile station in the manner specified in the characterizing part of claim 1 . Background technique [0002] One of the fundamentals of mobile communication technology is the determination of the location of a mobile station for call holding and billing purposes. In addition, there are situations where a mobile station user needs to determine the coordinates of his location, for example when figuring out directions, getting lost, in an accident, or due to illness or some other more general reason, such as in order to inquire about the location of a service within a particular area . [0003] There are various methods of determining the location of a mobile station. A commonly used method known as the Global Positioning System (GPS) is based on signals received from satellites orbiting the Earth. This method requires a GPS receiver which should be integrated i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04Q7/38G01S1/02G01S5/10H04W64/00
CPCG01S1/026G01S5/10H04W64/00G01S5/0273
Inventor 加克·尼曼玛
Owner NOKIA CORP