METHOD AND APPARATUS FOR SOUNDING IN WIRELESS COMMUNICATION SYSTEM

摘要

Disclosed are a method and an apparatus for sounding in a wireless communication system. A method for sounding in a wireless local area network (WLAN) may comprise: a step of receiving, by an STA, an NDPA frame from an AP; a step of receiving, by the STA, an NDP frame on the basis of identification information included in the NDPA frame; and a step of transmitting, by the STA, channel state information determined on the basis of the NDP frame to the AP, wherein the NDPA frame may be demodulated on the basis of a first FFT and the NDP frame may be demodulated on the basis of a second FFT.

主权项

1. As a sounding method in a wireless LAN, the sounding method comprises:
receiving a NDPA (null data packet announcement) frame by a STA (station) from an AP (access point); receiving a NDP (null data packet) frame based on identification information included in the NDPA frame by the STA; and transmitting channel state information being decided based on the NDP frame by the STA to the AP, and wherein the NDPA frame is demodulated based on first FFT (fast fourier transform), and wherein the NDP frame is demodulated based on a second FFT or a combination of the first FFT and the second FFT.