Multiplex communications – Duplex – Communication over free space
Reexamination Certificate
2011-06-07
2011-06-07
Appiah, Charles N (Department: 2617)
Multiplex communications
Duplex
Communication over free space
C370S294000, C370S279000, C455S434000, C455S561000, C455S443000, C455S517000, C455S524000
Reexamination Certificate
active
07957327
ABSTRACT:
Systems and methodologies are described that facilitate providing time-division duplexed beam-forming support in traditionally non-time-division duplexed wireless systems, such as an OFDMA system, a WCDMA system, etc. According to an aspect, a base station can analyze pilot information, such as a portion of bandwidth over which a user device is transmitting, and can transmit on the downlink using pre-hopped portion of bandwidth utilized by the user device on the preceding reverse link time slot. The base station can additionally transmit bandwidth segment reassignments to the user device to facilitate bandwidth segment hopping between user devices served by the base station. Additionally, the base station can instruct the user device to provide on-demand pilot information to resolve ambiguity related thereto.
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Khandekar Aamod
Palanki Ravi
Sutivong Arak
Appiah Charles N
Patel Milan
Peaches Randy
Qualcomm Incorporated
Seo Howard H.
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