Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate
2005-11-01
2005-11-01
Hoosain, Allan (Department: 2645)
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
C455S412100, C455S414200, C455S415000, C455S417000, C455S432100, C455S432300, C455S435200, C455S452100
Reexamination Certificate
active
06961565
ABSTRACT:
The present invention reduces the time required for cell search and increase the accuracy of the cell search by determining, during selection of frame boundaries and a scramble code, whether or not the selection results are correct. A mobile station causes descramblers to descramble a received signal with eight scramble codes. Then, correlators calculate the phases of the scramble codes on the basis of frame boundaries, and despreads the signal with a spreading code for a CPICH. The mobile station performs this operation over a plurality of symbols, and causes averaging process sections to average the results. Then, a peak detector selects a scramble code with which an average correlation coefficient is largest. This maximum average correlation coefficient is output to a detection results judging section, which then calculates the ratio of this value to a reference value calculated inside the mobile station, thereby judging detection results.
REFERENCES:
patent: 5930366 (1999-07-01), Jamal et al.
patent: 6185244 (2001-02-01), Nystrom et al.
patent: 6363060 (2002-03-01), Sarkar
patent: 6556620 (2003-04-01), Ohnishi
patent: 6754251 (2004-06-01), Sriram et al.
patent: 2002/0003791 (2002-01-01), Hayata
patent: 0825737 (1998-02-01), None
patent: 0930723 (1999-07-01), None
Nakamura Takehiro
Tanno Motohiro
Hoosain Allan
NTT DoCoMo Inc.
LandOfFree
Cell search method and apparatus for mobile station in... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Cell search method and apparatus for mobile station in..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cell search method and apparatus for mobile station in... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3487953