Communications: directive radio wave systems and devices (e.g. – Directive – Including a satellite
Reexamination Certificate
2011-03-29
2011-03-29
Phan, Dao L (Department: 3662)
Communications: directive radio wave systems and devices (e.g.,
Directive
Including a satellite
C342S357640
Reexamination Certificate
active
07916072
ABSTRACT:
Satellites of a satellite positioning system broadcast within the navigation signals ephemeris data having a certain period of validity. At a mobile station, ephemeris data are required for position-fixing. In assisted satellite positioning systems, acquisition of navigation signals emitted by the satellites is facilitated as assistance data are provided to the mobile station. At a server station, a request for assistance data issued by the mobile station is received, and the server station transmits ephemeris data as part of the assistance data to the mobile station in response to its request. Upon receiving the request for assistance data issued by the mobile station, the server station decides whether the mobile station could achieve a specified position fix accuracy if the mobile station was provided with the broadcast ephemeris data. In the positive, the server station transmits the broadcast ephemeris data to the mobile station. In the negative, the server station transmits, instead of broadcast ephemeris data, long-term ephemeris data to the mobile station as part of the assistance data requested. The long-term ephemeris data are derived from satellite orbit predictions and have a period of validity substantially increased with respect to the ephemeris data broadcast by the satellites.
REFERENCES:
patent: 6229478 (2001-05-01), Biacs et al.
patent: 2002/0188403 (2002-12-01), Lamance et al.
patent: 2002/0190898 (2002-12-01), Abraham et al.
patent: 2003/0011511 (2003-01-01), King et al.
patent: 2004/0117114 (2004-06-01), Van Diggelen
patent: 1517155 (2005-03-01), None
International Search Report PCT/EP2006/068177 Dated Feb. 12, 2007.
Corazza Stéphane
Monnerat Michel
Cantor & Colburn LLP
Phan Dao L
The European GNSS Supervisory Authority
LandOfFree
Method for providing assistance data to mobile station of a... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for providing assistance data to mobile station of a..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for providing assistance data to mobile station of a... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2704602