SOUNDING METHOD

摘要

A sounding device of a receiving device is provided. The receiving device receives an NDPA frame from a transmission device and receives an NDP frame from the transmission device after receiving the NDPA frame. The receiving device transmits a feedback frame to the transmission device after receiving the NDP frame wherein the feedback frame includes sub channel information measured for a sub channel allocated to a band of the sub channel among a plurality of sub channels formed by dividing a predetermined band.