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1. (WO2011156792) ACQUISITION OF NAVIGATION ASSISTANCE INFORMATION FOR A MOBILE STATION

Pub. No.:    WO/2011/156792    International Application No.:    PCT/US2011/040098
Publication Date: Dec 15, 2011 International Filing Date: Jun 10, 2011
IPC: G01S 5/02
G01C 21/20
Applicants: QUALCOMM INCORPORATED
DO, Ju-Yong
FARMER, Dominic, Gerard
Inventors: DO, Ju-Yong
FARMER, Dominic, Gerard
Title: ACQUISITION OF NAVIGATION ASSISTANCE INFORMATION FOR A MOBILE STATION
Abstract:
Navigation assistance information for a mobile station is acquired based on a feature descriptor of an image of a visual beacon captured by the mobile station. The navigation assistance information includes locations of neighboring visual beacons, locations of wireless positioning resources; user environmental context information. The navigation assistance information may then be used to assist in navigating within the local environment. The visual beacon may be an artificial feature, such as a QR code or other type of matrix or bar code or a natural feature, such as a statute or architectural detail. The mobile station may request navigation assistance by transmitting the feature descriptor to a server. The server retrieves the navigation assistance information from a database based on the feature descriptor and optionally location information, which may also be provided in the navigation assistance request, and transmits the navigation assistance information to the mobile station.