Method and apparatus for providing channel quality feedback in an orthogonal frequency division multiplexing communication system
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United States of America Patent
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Jul 23, 2013
Grant Date -
Nov 5, 2009
app pub date -
Apr 21, 2009
filing date -
May 5, 2008
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Abstract
In an OFDM communication system, a mobile station provides a radio access network (RAN) a channel quality metric second order statistic, in one embodiment a signal to noise plus interference power ratio (SINR) second order statistic and in particular an SINR standard deviation and/or variance, along with a mean channel quality metric, that is, a mean SINR. By providing both a mean channel quality metric and a channel quality metric second order statistic, the communication system permits the RAN to create a more accurate fading profile of an associated air interface, and in particular a downlink of the air interface, thereby facilitating an improved scheduling decision over the prior art and assuring that a packet has a higher probability to go through a downlink channel without too many retransmissions.
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