QUALCOMM Incorporated
DOWNLINK (DL) COORDINATED BEAMFORMING PROTOCOLS FOR WIFI

Abstract:

Certain aspects relate to methods and apparatus for wireless communication. The apparatus generally includes a first interface configured to output one first frame for transmission to solicit CSI feedback from each of one or more first wireless nodes associated with a first BSS and from each of one or more second wireless nodes associated with a second BSS, a second interface configured to obtain the CSI feedback solicited from the first and second wireless nodes, and a processing system configured to generate data frames for the first wireless nodes based on the CSI feedback solicited from the first wireless nodes, and one or more nulling frames based on the CSI feedback solicited from the second wireless nodes. The first interface is configured to simultaneously output the data frames for beamformed transmission to the first wireless nodes, and the nulling frames for beamformed transmission to the second wireless nodes.