Feedback of channel quality information
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United States of America Patent
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Feb 2, 2010
Grant Date -
Dec 13, 2007
app pub date -
Jun 12, 2007
filing date -
Feb 21, 2002
priority date (Note) -
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Abstract
Methods and apparatus are presented for improving the feedback of channel information to a serving base station, which allows a reduction in the reverse link load while allowing the base station to improve the forward link data throughput. Over a channel quality indicator channel, a carrier-to-interference (C/I) symbol is transmitted over multiple slots at a reduced rate, which increases the likelihood that the base station can decode said symbol. The reduced rate mode can be selectively triggered by a high velocity condition or other unfavorable channel condition. The C/I symbol is used to determine transmission formats, power levels, and data rates of forward link transmissions.
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