title: Is there way to force devices send VHT beamforming report?
body: <p>I'm interested in how often access points send NDP(Null Data Packet) to devices to calibrate MIMO beam forming condition on 802.11ac, and wondering there would be any way to force NDP and following beam forming report frame to be transmitted between APs and devices, that is, is it possible to determine the transmit rate of NDP by myself?</p>