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System and method for identifying the position of mobile terminals

A mobile terminal and positioning module technology, applied in the direction of location information-based services, transmission systems, selection devices, etc., can solve problems such as unreliability, small accuracy, and impossibility for users or operators to determine

Inactive Publication Date: 2005-03-23
TELECOM ITALIA SPA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0018] In this case, according to the prior art, the positioning operation produces a more or slightly less precise result due to variations in the characteristics of the mobile terminal, but it is not possible for the user or operator to determine greater or lesser accuracy situation
[0019] In other cases, reference stations have reference information that is not fully updated, for example information about wireless base station characteristics such as transmit power, antenna type, equipment type, assigned frequency, etc., so due to the stability, positioning operations based on baseline information that is neither updated nor verified lead to completely wrong and unreliable results
In this case, it is also impossible for the user or operator to determine the quality of the results obtained, since the known positioning tools do not allow verification of the nature of the reference information used

Method used

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  • System and method for identifying the position of mobile terminals
  • System and method for identifying the position of mobile terminals
  • System and method for identifying the position of mobile terminals

Examples

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Embodiment Construction

[0032] refer to figure 1 According to the present invention, the system (system) 10 for identifying the position of a mobile terminal includes: a plurality of mobile terminals (terminals) 12, such as cellular phones randomly distributed on a certain area and to identify positions; (BTS station) 16 a network (network) 14 of mobile or cellular telephones, such as a GSM (Global System for Mobile Communications) network; and a reference station or a reference or cellular telephone location center (MLC) 15 .

[0033] Each terminal of known type 12 ( figure 1 and figure 2 ) includes: a radio frequency circuit (RF circuit) 22; a control circuit 25, which is connected to the RF circuit 22 and can control the actions of the terminal 12 based on a program stored in the control circuit 25 itself; and a SIM card (SIM) 27 , SIM card 27 is connected to control circuit 25 in a known manner. A SIM 27 of known type includes appropriate procedures for managing and billing telephony services...

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Abstract

The present invention relates to a system 10 and corresponding method for locating mobile terminals 12 following a location request whereto is associated information whose content depends on the position and characteristics of the mobile terminal 12 to be located. The system 10 comprises a cellular phone location centre (MLC centre) 15 able to locate the mobile terminals 12, in selective fashion, as the type and reliability of the received information vary. The system 10 and corresponding method allow, by means of the MLC centre 15, to select, among a plurality of location engines, a determined engine suited to manage the received information and selectively to identify both the position of the mobile terminal 12 and accuracy indicators relating to the type of locating operation performed.

Description

technical field [0001] The present invention relates to a system and method for identifying the location of a mobile terminal, such as a cellular telephone, which is to be located due to a location request from the mobile terminal or from a service center or from an authorized operator. In particular, the invention relates to a system and method for identifying the location of a mobile terminal within an area served by a mobile telephone network. Background technique [0002] Many systems and methods for locating mobile terminals are known in the art. [0003] A common feature of such systems and their corresponding positioning methods is the utilization of some parameters or characteristics inherent in what constitutes cellular communication, such as: [0004] - the identifier of the radio base station (serving station) capable of exchanging information with the mobile terminal, [0005] - the electromagnetic field value measured by the mobile terminal, [0006] - A dela...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04M3/42H04W4/02H04W4/029H04L29/08H04W64/00
CPCH04W4/02H04W64/00H04L67/04H04L67/18H04L67/52H04W4/029
Inventor 戴维·菲理泽拉劳利斯·思特拉
Owner TELECOM ITALIA SPA
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