Title:
POSITION DETERMINATION USING A WIRELESS SIGNAL
Document Type and Number:
WIPO Patent Application WO/2011/063153
Kind Code:
A3
Abstract:
A mobile station determines its position using measured parameters of a wireless signal to improve a satellite positioning system (SPS) enhanced dead reckoning based position estimate. The mobile station uses SPS enhanced dead reckoning to estimate a current position. The mobile station receives wireless signals and measures, e.g., received signal strength and/or round trip time, which is compared to a database to derive a wireless signal based position estimate. The SPS enhanced dead reckoning position estimate and the wireless signal based position estimate may then be fused using corresponding confidence levels. The database may be generated and stored in the mobile station. In another embodiment, the database is generated and stored on an online server that may be accessed by mobile stations.
Inventors:
BRUNNER CHRISTOPHER (US)
KULIK VICTOR (US)
KULIK VICTOR (US)
Application Number:
PCT/US2010/057284
Publication Date:
July 21, 2011
Filing Date:
November 18, 2010
Export Citation:
Assignee:
QUALCOMM INC (US)
BRUNNER CHRISTOPHER (US)
KULIK VICTOR (US)
BRUNNER CHRISTOPHER (US)
KULIK VICTOR (US)
International Classes:
G01S5/02
Domestic Patent References:
| WO2002054100A2 | 2002-07-11 | |||
| WO2006096923A1 | 2006-09-21 |
Foreign References:
| US20010022558A1 | 2001-09-20 | |||
| US20070002813A1 | 2007-01-04 | |||
| US20060217131A1 | 2006-09-28 | |||
| US20060239202A1 | 2006-10-26 |
Attorney, Agent or Firm:
PAREKH, Shyam K. (5775 Morehouse DriveSan Diego, Califonia, US)
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