公开(公告)号：EP1882373A4

公开(公告)日：2012-06-27

申请号：EP06759783

申请日：2006-05-12

申请人： MICROSOFT CORP

发明人： CHEUNG MATTHEW MAN CHUNG ,  KRUMM JOHN C ,  THOTA CHANDRASEKHAR ,  LOMBARDI STEVE J ,  SHARMA ANURAG

IPC分类号： G01S5/02 ,  H04W64/00

CPC分类号： H04W64/00 ,  G01S5/0226 ,  G01S5/0236 ,  H04W4/028 ,  H04W4/043

摘要： 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.