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Agps system and method for determining the location of a terminal

一种全球定位系统、终端的技术，应用在AGPS领域，能够解决不能获得同步时间信息、很难无线LAN实现AGPS系统等问题

Inactive Publication Date: 2006-06-21
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is difficult to implement an AGPS system in a wireless LAN without obtaining a solution to synchronize time
[0010] In a traditional system that provides location services, a terminal with a wireless LAN function that accesses the network through an access point can obtain the AGPS data needed to determine its location from a location determination entity, but cannot obtain synchronous time information

Method used

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Embodiment Construction

[0022] Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. In the drawings, the same elements, even though they are described in different drawings, will also be designated by the same reference numerals and characters. In addition, in the following description of the present invention, when it may cause the subject of the present invention to be unclear, a detailed description of known functions and configurations incorporated herein will be omitted.

[0023] The present invention provides a method for determining the location of a mobile terminal in an AGPS system based on AGPS data received from a PDE (location determining entity) and synchronized time information received from an NTP (network time protocol) server.

[0024] NTP is a protocol widely used to synchronize clocks on network elements ("NE") connected via a network. As an Internet standard, NTP provides a time accuracy of 1 to 50ms depending on synchronization...

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Abstract

A method of determining the position of a terminal in an AGPS system in a wireless LAN by using AGPS data supplied from a PDE (Position Determination Entity) and time information supplied from an NTP (Network Time Protocol) server is disclosed.

Description

Technical field [0001] The present invention relates to an AGPS (Assisted Global Positioning System), and more specifically, to an AGPS system that uses an NTP (Network Time Protocol) server that provides synchronized time information in a wireless LAN, and uses the AGPS system to determine the location of a terminal method. Background technique [0002] Many companies are racing to develop new wireless technologies that can be used to provide communication services such as wireless Internet access regardless of location. Wireless networks are growing with the increasing demand for wireless Internet access. A wireless LAN (local area network) uses radio waves or infrared waves instead of network cables or telephone lines to exchange information between network devices such as computers, minimizing the need for wired connections, thereby reducing time and costs associated with network installation. Wireless LAN provides users with mobile access to networks i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S19/23H04L12/28G01S1/00G01S19/25G01S19/27
CPCG01S19/05G01S19/256H04W64/00
Inventor 全池然表钟善
Owner SAMSUNG ELECTRONICS CO LTD
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