Patent ID: 8229452
Filing Date: 2012-07-24
Classification: H04B,H04L,H04W

Abstract:
1. A method comprising: collecting, by a transmitter station, information associated with one or more uplink channels of a multiple-input-multiple-output (MIMO) system employed to communicate with at least one receiver station, wherein the collecting information comprises collecting channel quality for spatial channels and/or data streams; based at least in part on the information associated with the one or more uplink channels, computing channel quality information for a number of downlink channels by estimating a usable number of channels; based at least in part on the computing channel quality information, determining one or more downlink channel parameters for use by the transmitter station to transmit signals to the at least one receiver station via one or more of the downlink channels; and receiving by the transmitter station, from the at least one receiver station, feedback information only for a subset of relatively stronger channels of the estimated usable channels.