Base station for code group synchronization

Details Base station for code group synchronization Base station for code group synchronization

2006-08-22

2006-08-22

Nguyen, Chau (Department: 2661)

Multiplex communications

Communication over free space

Repeater

C370S350000

Reexamination Certificate

active

07095723

ABSTRACT:
A base station is capable of communicating in a time division duplex using code division multiple access format. The base station transmits a primary synchronization signal and secondary synchronization signals for synchronization purposes. A primary synchronization signal is transmitted in a selected time slot in a primary synchronization channel. The primary synchronization channel uses a plurality of time slots for communication. Each of a plurality of combinations of N code groups and the plurality of time slots is associated with a unique combination of secondary synchronization signals from a set of secondary synchronization signals, which does not exceed (log2N)+1 in number. Selected secondary synchronization signals are transmitted out of a set of secondary synchronization signals. The selected secondary signals are associated with one of the N code groups. The one group is associated with the base station.

REFERENCES:
patent: 5559789 (1996-09-01), Nakano et al.
patent: 5715521 (1998-02-01), Fukasawa et al.
patent: 6173006 (2001-01-01), Kent et al.
patent: 6185284 (2001-02-01), Goodman
patent: 6246673 (2001-06-01), Tiedemann, Jr. et al.
patent: 6317413 (2001-11-01), Honkasalo
patent: 6363060 (2002-03-01), Sarkar
patent: 6473395 (2002-10-01), Lee
patent: 6526091 (2003-02-01), Nystrom et al.
patent: 6665277 (2003-12-01), Sriram
patent: 6717930 (2004-04-01), Sezgin et al.
patent: 6741578 (2004-05-01), Moon et al.
patent: 6865177 (2005-03-01), Park et al.
patent: 9912273 (1999-03-01), None
patent: WO9912273 (1999-03-01), None
TSG-RAN Working Group 1 (Radio) Meeting #3, “A New Hierarchical Correlation Sequence with Good Properties in Presence of a Frequency Error”, Eskilstuna, Sweden, Mar. 22-26, 1999.
Nadir Sezgin and Fatih Ozluturk, “BPSK Modulated Secondary Synchronization Codes for Cell Search in UTRA TDD”, May 28, 2000.
TSG-RAN Working Group 1 Meeting #2, “Synchronization Channel with Cyclic Hierarchical Sequences”, Yokohama, Japan, Feb. 22-25, 1999.
ETSI SMG2 UMTS, Physical Layer Expert Group Meeting #2, “Comma Free Codes for Fast PN Code Acquisition in WCDMA Systems: A Proposal for the UTRA Concept” , Paris, France, Apr. 28, 1998.
InterDigital Communications Corporation, “QPSK Modulated Secondary Synchronization Codes (SSC) Algorithm”, Aug. 9, 1999.
3GPP TSG-RAN Working Group 1 Meeting #4, “Calculation of toffsetfor Physical Synchronization Channel in TDD Mode”, Shin Yokohama, Apr. 18-20, 1999.
TSG-RAN Working Group 1 Meeting #5, “BPSK Modulated Secondary Synchronization Codes Based Cell Search in UTRA TDD”, Cheju, South Korea, Jun. 1-4, 1999.
European Telecommunications Standards Institute, “Universal Mobile Telecommunications System (UMTS); UMTS Terrestrial Radio Access (UTRA); Concept Evaluation”, (UMTS 30.06 version 3.0.0), (1997).
K. Higucki, M. Sawahashi and F. Adachi, “Fast Cell Search Algorithm in DS-CDMA Mobile Radio Using Long Spreading Codes”, (1997), pp. 1430-1434.

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