Patent ID: 9713031
Date: 2017-07-18
CPC Classifications: H04B,H04L,H04W

Claim:
1. A method for transmitting a frame, the method comprising: generating, by an access point, a non-beamformed omni portion of the frame, wherein the non-beamformed omni portion includes a short training field, a first long training field and a signal field, wherein the first long training field includes channel estimation information for decoding the signal field, and wherein the signal field includes a beam forming field indicating whether beamforming is used for a multi-stream portion of the frame; generating, by the access point, the multi-stream portion of the frame, wherein the multi-stream portion of the frame is located after the omni portion of the frame, wherein the multi-stream portion includes a second long training field and a data field, and wherein the second long training field includes reference signal information for channel estimation of station-specific data in the data field; and wirelessly transmitting, by the access point, the frame.