Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate
2006-08-15
2006-08-15
Gesesse, Tilahun (Department: 2684)
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
C455S427000, C455S012100, C455S067110
Reexamination Certificate
active
07092725
ABSTRACT:
A system and method for determining timing offset errors in a low earth orbit satellite system based upon Doppler and Doppler rate of change is provided. A user terminal determines first and second timing offsets respectively associated with first and second satellite beams from respective first and second satellites. Next, the user terminal determines the Doppler and Doppler rate of change associated with the first and second satellite beams. A timing offset is estimated from the measured Doppler and Doppler rate of change and is then compared with the user terminal's own determined timing offset. If the comparison does not produce a value within a predetermined threshold, a beam identification error is declared.
REFERENCES:
patent: 5543813 (1996-08-01), Araki et al.
patent: 5552795 (1996-09-01), Tayloe et al.
patent: 5644572 (1997-07-01), Olds et al.
patent: 5991598 (1999-11-01), Nawata
patent: 6072428 (2000-06-01), Schipper et al.
patent: 6317453 (2001-11-01), Chang
patent: 6785553 (2004-08-01), Chang et al.
patent: 6813257 (2004-11-01), Emmons et al.
Anderson Jon J.
Dai Jin
Ngai Francis M.
Victor Edward B.
Gesesse Tilahun
Lee John J.
Ogrod Greg D.
QUALCOMM Incorporated
Wadsworth Philip
LandOfFree
Aiding beam identification in a satellite system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Aiding beam identification in a satellite system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Aiding beam identification in a satellite system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3640942