Patent ID: 9055449
Filing Date: 2015-06-09
Classification: H04B,H04W

Abstract:
1. A method comprising: at a first wireless communication device having a plurality of antennas and capable of wirelessly communicating with one or more second wireless communication devices having one or more antennas, computing updates to steering matrix information used for beamforming one or more signal streams to a particular second wireless communication device based on a combination of a first channel sounding technique that involves an exchange of dedicated channel sounding related signals to determine channel conditions between the first wireless communication device and the particular second wireless communication device and a second channel sounding technique in which channel conditions are implicitly discovered from any signals transmitted by the particular second wireless communication device to the first wireless communication device; and determining whether a first period of time has elapsed since execution of the first channel sounding technique for the particular second wireless communication device when it is time to transmit data to the particular second wireless communication device.