Multiplex communications – Communication over free space – Repeater
Reexamination Certificate
2002-08-28
2009-02-03
Harper, Vincent P (Department: 2617)
Multiplex communications
Communication over free space
Repeater
C370S252000, C370S230000, C370S231000, C370S233000, C455S522000, C455S069000, C455S067110
Reexamination Certificate
active
07486634
ABSTRACT:
An apparatus and a method for improving the transmission efficiency when a retransmission of a communication is attained based on a Hybrid-ARQ (Automatic repeat ReQuest) system. A mode determining unit of a base station executes calculations to obtain a received signal quality difference between a received signal quality at the current stage and that of a past stage at a terminal, and supplies the received signal quality difference to a control unit. The control unit controls a power setting unit based on the received signal quality difference to control a transmission power of a signal transmitted from an adaptive coding and modulation unit. The present invention can be applied to a base station of a portable telephone communication network.
REFERENCES:
patent: 6697987 (2004-02-01), Lee et al.
patent: 6987754 (2006-01-01), Shahar et al.
patent: 2002/0018446 (2002-02-01), Huh et al.
patent: 2002/0110088 (2002-08-01), Lundby et al.
patent: 2002/0167907 (2002-11-01), Sarkar et al.
patent: 2003/0128674 (2003-07-01), Kong et al.
patent: 2005/0096080 (2005-05-01), Choi et al.
patent: 0 682 419 (1995-11-01), None
patent: EP0682419 (1995-11-01), None
patent: 8-251141 (1996-09-01), None
patent: 11-331296 (1999-11-01), None
patent: 2001-522553 (2001-11-01), None
patent: 2002-524918 (2002-08-01), None
patent: WO 95 10142 (1995-04-01), None
patent: WO 98/49797 (1998-11-01), None
patent: WO 00/13364 (2000-03-01), None
patent: WO 01 08322 (2001-02-01), None
Naijoh et al.,M.Type-II Hybrid ARQ Scheme using Punctured Convolutional Code with Adaptive Modulation Systems, CS 96-24˜31, May 21, 1996, vol. 96, No. 49, pp. 19-24.
Ghosh A et al: “Performance of coded higher order modulation and hybrid ARQ for next generation cellular CDMA systems” Vehicular Technology Conference, 2000. IEEE VTS Fall VTS 2000. 52ndSep. 24-28, 2000, Piscataway, NJ, USA,IEEE, vol. 2, Sep. 24, 2000, pp. 500-505, XP010525438 ISBN: 0-7803-6507-0.
Frommer William S.
Frommer & Lawrence & Haug LLP
Harper Vincent P
Lam Dung
Presson Thomas F.
LandOfFree
Adaptive modulation based on signal quality does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Adaptive modulation based on signal quality, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Adaptive modulation based on signal quality will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4066388