Patent ID: 9425872
Filing Date: 2016-08-23
CPC Classification: H04B

Claim Text:
1. A method for performing an implicit transmit beamforming procedure, the method comprising: determining, at a first communication device, that a second communication device does not support implicit transmit beamforming based on capability information advertised by the second communication device; responsive to determining that the second communication device does not support implicit transmit beamforming, determining, at the first communication device, that a non-sounding data unit transmitted by the second communication device is to be used in the implicit transmit beamforming procedure to determine a transmit beamforming matrix for the first communication device to utilize when the first communication device transmits to the second communication device via a forward channel; receiving, at the first communication device, the non-sounding data unit, which was transmitted from the second communication device via a reverse channel; developing, at the first communication device, an estimate of the reverse channel based on the non-sounding data unit that was transmitted from the second communication device via the reverse channel; and developing, at the first communication device, based on the estimate of the reverse channel, the transmit beamforming matrix for the first communication device to utilize when the first communication device transmits to the second communication device via the forward channel.