Patent ID: 9345001
Filing Date: 2016-05-17
CPC Classification: H04B,H04W

Claim Text:
1. A method of performing simultaneous downlink transmission over a wireless medium to a plurality of wireless stations, the method comprising: selecting a set of the plurality of wireless stations according to one or more ranking criteria; and reserving the wireless medium for a duration sufficient for completing the simultaneous downlink transmission to the wireless stations of said set, wherein selecting said set comprises selecting a preliminary subset based on channel state estimation received during a first learning interval, and selecting a main subset based on channel state estimation received during a second learning interval including said first learning interval, wherein said method further comprises performing simultaneous downlink transmission to stations of said main subset after performing simultaneous downlink transmission to stations of said preliminary subset, wherein said main and preliminary subsets are defined by a set of beamforming vectors, associated with the corresponding subset, and wherein a rate of each frame in the subset is changeable during a lifetime of the subset.