CHANNEL SOUNDING METHOD AND DEVICE FOR MULTI-AP COORDINATED TRANSMISSION

    公开(公告)号:EP4152799A1

    公开(公告)日:2023-03-22

    申请号:EP21816662.7

    申请日:2021-05-11

    IPC分类号: H04W24/08

    摘要: This application relates to the field of wireless communication, and in particular, to a channel sounding method for multi-AP coordinated transmission and a related apparatus. For example, the application is applied to a wireless local area network supporting the 802.1 1be standard. The method includes: A first AP/primary AP generates and send an announcement frame that carries first indication information, to indicate a type of downlink multi-AP coordinated transmission; a plurality of APs (which may or may not include the first AP) participating in multi-AP coordinated transmission sends NDP frames; and the STA performs channel measurement on the received NDP frame according to the indicated type of downlink multi-AP coordinated transmission, generates a beamforming report corresponding to the type of downlink multi-AP coordinated transmission, and feeds back the beamforming report to the first AP, to support different types of multi-AP coordinated transmission, reduce inter-cell interference, and improve user service quality.