Patent ID: 7697449
Filing Date: 2010-04-13
Classification: H04L,H04W

Abstract:
1. A method comprising: operating multiple transmit antennas and multiple receive antennas to transmit and receive data over a wireless channel for multiple-in-multiple-out (MIMO) wireless communications; adaptively determining a data rate of packetized information transmission over the wireless channel based on both a signal quality measure of multiple received signals and a channel quality measure derived from the multiple received signals, the channel quality measure being indicative of frequency selectivity in the wireless channel, wherein the multiple received signals are respectively received by the multiple receive antennas; and transmitting the packetized information over the wireless channel in accordance with the data rate, wherein said adaptively determining comprises using the signal quality measure as a first level determinant of the data rate and using the channel quality measure as a second level determinant of the data rate, wherein using the signal quality measure comprises selecting an original rate based on the signal quality measure and one or more signal quality thresholds, and using the channel quality measure comprises adjusting the original rate if the signal quality measure falls within a tolerance range of a signal quality threshold and if the channel quality measure indicates an adjustment is needed.