Telecommunications – Transmitter and receiver at separate stations – With control signal
Reexamination Certificate
2011-07-19
2011-07-19
Tran, Tuan A (Department: 2618)
Telecommunications
Transmitter and receiver at separate stations
With control signal
C455S068000, C455S067110, C455S067130, C455S522000, C455S561000, C375S296000, C375S299000, C375S346000, C375S358000
Reexamination Certificate
active
07983623
ABSTRACT:
In a wireless network, plural downlink signals from plural base stations are transmitted to a terminal. The plural downlink signals all carry the same information to the terminal. The terminal provides feedback on the downlink channels. The feedback provides information on the taps of the channels. The amount of information fed back is constrained. Based on the feedback, transmission parameters of the downlink signals are adjusted. The process of transmitting, providing feedback, and adjusting the parameters continue so that the energy of the downlink signal is enhanced at the terminal location and suppressed elsewhere. Beam forming can be used to further suppress the energy signature at locations other than the terminal location.
REFERENCES:
patent: 6295289 (2001-09-01), Ionescu et al.
patent: 6930981 (2005-08-01), Gopalakrishnan et al.
patent: 7248645 (2007-07-01), Vialle et al.
patent: 7366253 (2008-04-01), Kim et al.
patent: 7376192 (2008-05-01), Koorapaty et al.
patent: 2005/0037718 (2005-02-01), Kim et al.
patent: 2009/0016425 (2009-01-01), Hui et al.
patent: 0 999 658 (2000-05-01), None
patent: 1 175 022 (2002-01-01), None
patent: 20020092747 (2002-12-01), None
patent: 20030058265 (2003-07-01), None
International Preliminary Report on Patentability & Written Opinion mailed Sep. 25, 2008 (6 pages).
Leonid G. Krasny et al., “Transmit Diversity with Constrained Feedback”, 14thIST Mobile and Wireless Communication Summit, 2005, 4 pages.
International Search Report & Written Opinion mailed Sep. 25, 2008.
Balachandran Kumar
Krasny Leonid
Nixon & Vanderhye P.C.
Telefonaktiebolaget LM Ericsson (publ)
Tran Tuan A
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