Adaptive transmission method and a base station using the method
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United States of America Patent
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Dec 27, 2011
Grant Date -
Sep 10, 2009
app pub date -
Mar 10, 2008
filing date -
Mar 10, 2008
priority date (Note) -
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Abstract
The invention relates to a method, a base station and a computer program for selecting a spatial transmission method for a next downlink transmission in a base station. The base station can be a WiMAX, a UMTS or a 3 GPP LTE base station. According to the invention the base station makes a selection between beamforming (BF), space-time coding (STC) or MIMO for a next downlink frame. The selection is based on uplink measurements and feedback information from a particular mobile station whereto the next downlink frame is to be transmitted.
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