Patent ID: 10181887

Abstract:
A method, and a device, for reporting channel state information (CSI) in a wireless local area network system are discussed. The method according to one embodiment includes receiving, by a responding station, a sounding Physical layer Protocol Data Unit (PPDU) from a requesting station; and transmitting, by the responding station, a CSI report to the requesting station, the CSI report including CSI report information in a form of angles representing a beamforming feedback matrix that is estimated by the responding station based on the sounding PPDU. If the sounding PPDU is received via a plurality of contiguous channels, the beamforming feedback matrix is estimated based on all of the plurality of contiguous channels. If the sounding PPDU is received via at least one of a plurality of non-contiguous channels, the beamforming feedback matrix is estimated based on only one of the plurality of non-contiguous channels.