Method and apparatus for a rate control in a high data rate communication system
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United States of America Patent
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Aug 26, 2008
Grant Date -
Sep 16, 2004
app pub date -
Mar 24, 2004
filing date -
Apr 24, 2000
priority date (Note) -
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Abstract
A method and an apparatus for rate control in a high data rate (HDR) communication system are disclosed. An exemplary HDR communication system defines a set of data rates, at which an access point (AP) may send data packets to an access terminal (AT). The data rate is selected to maintain targeted packet error rate (PER). The AT's open loop algorithm measures received signal to interference and noise ratio (SINR) at regular intervals, and uses the information to predict an average SINR over the next packet duration. The AT's closed loop algorithm measures a packet error rate (PER) of the received signal, and uses the PER to calculate a closed loop correction factor. The loop correction factor is added to the SINR value predicted by the open loop, resulting in an adjusted SINR.
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