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Mobile communication terminal for receiving position information service and method thereof

A technology for mobile communication terminals and location information, which is applied in the field of mobile communication terminals and can solve problems such as the impossibility of location determination

Inactive Publication Date: 2008-04-02
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] However, cell phone based systems using GPS signals have the disadvantage that position determination is not possible in satellite shadow areas where signals cannot be received from at least 4 satellites

Method used

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  • Mobile communication terminal for receiving position information service and method thereof
  • Mobile communication terminal for receiving position information service and method thereof
  • Mobile communication terminal for receiving position information service and method thereof

Examples

Experimental program
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Embodiment Construction

[0031] The location determination method for a mobile communication terminal according to the present invention can be applied to IS-95A / B networks, CDMA2000 1x EV-DO, EV-DV, and fourth generation mobile communication networks.

[0032] The location information service method for a mobile communication terminal according to the present invention can be applied to both a synchronous mobile communication system and an asynchronous mobile communication system.

[0033] The phrase "location information of a base station" refers to values ​​for defining longitude coordinates and latitude coordinates where a base station is located.

[0034] The phrase "identification information of a base station" refers to a value for identifying a base station, and each base station has a different value.

[0035] The phrase "visible satellite information" refers to almanac data and ephemeris data received from satellites visible at the location of the mobile communication terminal.

[0036] The p...

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Abstract

A mobile communication terminal for receiving position information by using a mobile communication network in a satellite shaded area and a method thereof. The mobile communication terminal includes a channel receiver for receiving location information of a linked base station and for receiving identification and position information of adjacent base stations while capturing a channel; a signal property detector for measuring strengths and phases of pilot signals received from the adjacent base stations and selecting two adjacent base stations transmitting the two strongest pilot signals; a position calculator for calculating a position of the mobile communication terminal by using the position information of the two selected adjacent base stations and the linked base station; and a control unit for setting the calculated position of the mobile communication terminal to position information of the mobile communication terminal.

Description

technical field [0001] The present invention relates to a mobile communication terminal, and in particular to a mobile communication terminal that receives location information by using a mobile communication network in a satellite shadow area and a method thereof. Background technique [0002] Mobile communication terminals include Personal Digital Assistants (PDAs), cellular phones, Personal Communication Services (PCS) phones, handheld PCs, Global System for Mobile (GSM) phones, and notebook computers. [0003] With the popularization of mobile communication terminals, mobile communication terminal users have come to require various functions. Therefore, mobile communication terminal manufacturers are now providing various services in addition to basic services of mobile communication terminals. [0004] In particular, among wireless Internet services using mobile communication terminals, location-based services (LBS) have become prominent due to their widespread usefuln...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04Q7/32H04Q7/38H04B7/185H04L12/16G01S5/02G01S19/25
CPCG01S5/0257G01S19/252G01S5/0226G01S5/0236H04W64/00
Inventor 朱宰石
Owner SAMSUNG ELECTRONICS CO LTD