Downlink (DL) coordinated beamforming protocols for WIFI

” one will understand how the features of this disclosure provide advantages that include improved communications between access points and stations in a wireless network.

[0010]Certain aspects provide an apparatus for wireless communication. The apparatus generally includes a first interface configured to output at least one first frame for transmission to solicit a sounding frame from each of one or more first wireless nodes associated with a first basic service set (BSS) and each of one or more second wireless nodes associated with a second BSS; a second interface configured to obtain the sounding frames from each of the first and second wireless nodes; and a processing system configured to perform uplink channel estimation for each of the first and second wireless nodes based on the sounding frames, generate one or more data frames for the first wireless nodes based on the uplink channel estimation performed for the first wireless nodes, and generate one or more nulling frames based