Patent ID: 8774304

Claim:
A method in a first communication device configured to (i) transmit data units to a second communication device via a forward link and (ii) receive data units from the second communication device via a reverse link, the method comprising: transmitting, from the first communication device, a plurality of consecutive sounding data units via the forward link, wherein each consecutive sounding data unit is transmitted via a different subset of antennas; receiving, at the first communication device, channel state information (CSI) corresponding to the forward link, wherein the CSI corresponding to the forward link was generated (i) at the second communication device and (ii) based on the plurality of consecutive sounding data units transmitted to the second communication device; and determining, at the first communication device, a subset of antennas to use in receiving data units via the reverse link, wherein the subset of antennas to use in receiving data units via the reverse link is determined based on the CSI corresponding to the forward link.