Telecommunications – Transmitter – Diversity
Reexamination Certificate
2007-01-09
2007-01-09
D'Agosta, Steven M. (Department: 2617)
Telecommunications
Transmitter
Diversity
C455S103000, C455S104000, C455S105000, C455S132000, C455S135000, C455S550100, C455S552100, C455S553100, C375S298000, C375S269000, C375S347000, C370S334000, C370S329000, C370S348000, C370S465000
Reexamination Certificate
active
10748781
ABSTRACT:
Methods and apparatus for scheduling mobile stations (MSs) to download data and/or to control the rate of downloading to an MS from a base station (BS) as a function of downlink channel condition information are described. Artificial channel variations, which can be measured at the MS, and feedback to a BS for scheduling purposes, are introduced through the use of two or more transmitter antennas at a BS. Each of the antennas transmits a signal at the same frequency having the same information content, e.g., modulated data. However the signals are made to differ with time in their phase and/or amplitude to introduce what appear to be channel variations to the MSs.
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Laroia Rajiv
Tse David N. C.
Viswanath Pramod
D'Agosta Steven M.
QUALCOMM Incorporated
Straub Michael P.
Straub and Pokotylo
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