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Locating moving terminal method, corresponding moving terminal, servicer and location point

A mobile terminal and positioning point technology, applied in the direction of location information-based services, positioning, instruments, etc., can solve problems such as low efficiency and terminal hardware changes

Inactive Publication Date: 2003-12-10
ALCATEL LUCENT SAS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This scheme is very accurate, but requires expensive hardware changes at the end
Moreover, this scheme is not very efficient in indoor environments

Method used

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  • Locating moving terminal method, corresponding moving terminal, servicer and location point
  • Locating moving terminal method, corresponding moving terminal, servicer and location point
  • Locating moving terminal method, corresponding moving terminal, servicer and location point

Examples

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Embodiment Construction

[0030] Figure 1 shows a wireless communication system in which the method according to the invention can be implemented. The wireless communication system includes a first non-cellular communication network 11 , a second cellular communication network 12 and a mobile terminal 13 capable of connecting anchor points 111 , . . . , 113 and the cellular communication network 12 .

[0031] The anchor points 111, . . . , 113 preferably form the non-cellular communication network 11 and act as entry points for the non-cellular communication network. In another embodiment of the invention, the anchor point may be a purely self-contained device.

[0032] Each anchor is specifically associated with an anchor identifier. The non-cellular communication network 11 can be based on Bluetooth technology or any short-range communication network (eg IrDa, wireless LAN according to the 802.11 specification...).

[0033] The term anchor point refers to a device whose precise position is continuo...

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Abstract

The invention relates to a method for localizing a mobile terminal (13) in an area under radio coverage of a cellular communication network (12) and of a localization point (11). According to the invention, the method comprises the steps of: transferring to said mobile terminal (13) a localization point identifier (LP-ID) of said localization point (111, . . . , 113), said mobile terminal (13) being under radio coverage of said localization point (111, . . . , 113); transferring said localization point identifier (LP-IDs) via said cellular communication network (12) from said mobile terminal (13) to a server (123) connected to said cellular communication network (12).

Description

[0001] The present invention is based on priority application EP 02 360 154.5, which is hereby incorporated by reference. technical field [0002] The invention relates to a method for determining the location of a mobile terminal, preferably for providing a location-based service to the mobile terminal. Background technique [0003] Known methods for determining the location of a mobile terminal are described below. [0004] A method for determining the identifier of the cell in which a mobile terminal is currently located is known in the prior art. This method, called Cell ID, relies on the assumption that the geographic coverage of a cell corresponds to that expected from wireless studies. Precise positioning is possible using round-trip delay measurements employed by base stations, which measure the time between transmitting a frame and receiving the corresponding reply. Using this measurement, the base station can determine the distance to the mobile terminal with an ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W4/02H04W4/029
CPCH04W4/02H04W4/029
Inventor 约翰·戴格勒蒙克莱尔·贝津
Owner ALCATEL LUCENT SAS
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