Pulse or digital communications – Spread spectrum – Direct sequence
Reexamination Certificate
2007-05-29
2007-05-29
Tran, Khanh (Department: 2611)
Pulse or digital communications
Spread spectrum
Direct sequence
C370S328000
Reexamination Certificate
active
09540128
ABSTRACT:
In a remote unit of a wireless communication system, the speed of acquisition, or reacquisition, of a pilot signal by a search engine is increased. PN space is divided into segments and a coarse search of each segment is performed using a set of “fast” search parameters. A set of peak signal strengths along with their corresponding PN offsets, is saved for each segment of PN space. Following the search of all segments of PN space, the peak signal strengths which were saved during the coarse acquisition are evaluated. Coarse acquisition search results are used by the remote unit to determine fine search window parameters for subsequent searches performed by the remote unit search engine. The fine search parameters concentrate searching efforts on portions of PN space most likely to contain a viable base station pilot signal.
REFERENCES:
patent: 5642377 (1997-06-01), Chung et al.
patent: 5644591 (1997-07-01), Sutton
patent: 5805648 (1998-09-01), Sutton
patent: 5812593 (1998-09-01), Kaku
patent: 6044074 (2000-03-01), Zehavi et al.
patent: 6044104 (2000-03-01), Watanabe
patent: 6154487 (2000-11-01), Murai et al.
patent: 6226282 (2001-05-01), Chung
patent: 6320849 (2001-11-01), Hughes et al.
patent: 6445728 (2002-09-01), Byun
patent: 6466606 (2002-10-01), Jou
patent: 6519237 (2003-02-01), McDonough et al.
patent: 6542743 (2003-04-01), Soliman
patent: 6546248 (2003-04-01), Jou et al.
patent: 6549545 (2003-04-01), Yamamoto et al.
patent: 7031271 (2006-04-01), LaRosa et al.
patent: 7085246 (2006-08-01), LaRosa et al.
patent: 2320403 (1998-06-01), None
International Search Report, dated Sep. 14, 2001.
Glazko Serguei A.
Hughes Robbin
Yao De-Gang
Brown Charles D.
Jenckes Kenyon S.
Qualcomm Incorporated
Rouse Thomas R.
Tran Khanh
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