Dynamic channel quality measurement procedures for optimizing data transmission in a wireless digital communication system
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United States of America Patent
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Apr 24, 2007
Grant Date -
Sep 23, 2004
app pub date -
Jan 30, 2004
filing date -
May 14, 2001
priority date (Note) -
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Abstract
Data transmission is optimized in a wireless digital communication system including a base station and a plurality of user equipment mobile terminals (UEs). Adaptive modulation and coding (AM&C) is employed to achieve improved radio resource utilization and provide optimum data rates for user services. Blocks of downlink (DL) data are received by the base station which requests downlink DL channel quality measurements only from those UEs with pending downlink transmissions. The UEs respond to the request by measuring and reporting DL channel quality to the base station, which then allocates resources such that the UEs will make best use of radio resources. The base station notifies the UEs of the physical channel allocation indicating the modulation/coding rate and allocated slots followed by transmission of blocks of downlink data which are transmitted to the UEs.
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