发明名称 |
Positioning system, positioning method, and positioning program |
摘要 |
<p>An object of the present invention is to implement accurate positioning of a mobile communication terminal even in an environment in which delay waves are included in radio waves arriving at the mobile communication terminal from radio wave sources. A positioning server 10 forming a positioning system for estimating a location of a cellular terminal 20 has a distance information acquisition unit 13 for acquiring information indicating distances calculated based on radio waves transmitted and received between a plurality of cellular base stations 30 and the cellular terminal 20; a direction information acquisition unit 14 for acquiring a plurality of pieces of information indicating directions of radio waves received by the cellular terminal 20; a virtual sector calculation unit 15 for calculating for each of the cellular base stations, a range of directions from the cellular base station 30 to the cellular terminal 20 from the information indicating the directions of the radio waves, based on a range calculation rule stored in advance; and a location calculation unit 16 for calculating the location of the cellular terminal 20, based on the distances and the range of directions.</p> |
申请公布号 |
EP1962102(B1) |
申请公布日期 |
2013.07.31 |
申请号 |
EP20080002891 |
申请日期 |
2008.02.15 |
申请人 |
NTT DOCOMO, INC. |
发明人 |
SHEN, JIYUN;ODA, YASUHIRO;TAKIISHI, KOSEI |
分类号 |
G01S5/12;G01S3/14 |
主分类号 |
G01S5/12 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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