Method for frequency acquisition of a mobile communications...

Pulse or digital communications – Synchronizers

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C375S136000, C375S142000, C375S143000, C375S144000, C375S145000, C375S147000, C375S148000, C375S149000, C375S150000, C375S316000, C375S365000, C375S366000, C375S367000, C375S368000

Reexamination Certificate

active

07826577

ABSTRACT:
A method is provided for frequency acquisition, particularly for initial frequency acquisition, pursuant to a known synchronization sequence for synchronizing a mobile communications device having a local oscillator with previously known transmit frequencies of a base station that transmit in a known channel raster with defined frequency points within a band, wherein the method includes the steps of determining the inband power of the known synchronization sequence via a sensor by scanning a frequency band, performing coarse determination of the local power maximum of the inband power and, thus, of the received carrier frequency over the scanned frequency band, producing a presumed channel frequency at which the base station is transmitting on the basis of knowledge of the channel raster of the transmit frequencies of the base station, performing fine determination of the received carrier frequency by comparison with the known synchronization sequence, and correcting the frequency deviation of the local oscillator from the transmitted carrier frequency.

REFERENCES:
patent: 5909433 (1999-06-01), Haartsen
patent: 5953323 (1999-09-01), Haartsen
patent: 6597729 (2003-07-01), Schmidl et al.
patent: 6615043 (2003-09-01), van de Berg
patent: 6618452 (2003-09-01), Huber et al.
patent: 6625200 (2003-09-01), Dent
patent: 6647066 (2003-11-01), Szajnowski
patent: 6678336 (2004-01-01), Katoh et al.
patent: 6680920 (2004-01-01), Wan
patent: 6950455 (2005-09-01), Tanno et al.
patent: 2002/0136180 (2002-09-01), Asokan
patent: 2004/0024588 (2004-02-01), Watson et al.
patent: 2004/0058679 (2004-03-01), Dillinger et al.
patent: 2004/0190645 (2004-09-01), Critchlow et al.
patent: 694 14 561 (1999-04-01), None
patent: 198 56 401 (2000-06-01), None
patent: 0 526 833 (1993-02-01), None
patent: 0 789 466 (1997-08-01), None
patent: WO0225881 (2002-03-01), None
Peter Smolka, “GSM-Funkschnittstelle, Elemente and Funktionen”, telekom praxis Heft 4, 1'993, pp. 17-24.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Method for frequency acquisition of a mobile communications... 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 frequency acquisition of a mobile communications..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for frequency acquisition of a mobile communications... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-4209047

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.