发明名称 POSITIONING SERVICE UTILIZING EXISTING RADIO BASE STATIONS
摘要 <p>Location position information of a mobile device utilizing Wi-Fi, FM, AM, television transmissions(s), other radio transmission(s), electromagnetic, acoustic, or other signals received from base stations or access points. The position information can be provided through a Web service and/or locally on a mobile user device. The position information can be provided with a certainty and/or uncertainty probability percentage or other perceivable means for the user to determine the expected accuracy of the location information. Also provided is a means for updating base station information to include newly detected base stations through information from a plurality of user devices, wherein each user device is given a reliance factor. User devices that have a low reliance factor are disregarded and/or scrutinized to determine accuracy prior to such information being utilized to update information. Functioning of the system can be improved through analysis of usage data and/or the additions to the database.</p>
申请公布号 EP1882373(A2) 申请公布日期 2008.01.30
申请号 EP20060759783 申请日期 2006.05.12
申请人 MICROSOFT CORPORATION 发明人 CHEUNG, MATTHEW MAN CHUNG;KRUMM, JOHN C.;THOTA, CHANDRASEKHAR;LOMBARDI, STEVE J.;SHARMA, ANURAG
分类号 G01S5/02;H04W64/00 主分类号 G01S5/02
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