Patent ID: 9071489
Filing Date: 2015-06-30
Classification: H04B,H04L,H04W

Abstract:
1. A method for transmitting a frame, the method comprises: generating, by an access point, an omni portion of the frame, the omni portion including a non-beamformed long training field and a signal field, the non-beamformed long training field including channel estimation information used to decode the signal field, the non-beamformed long training field configured to be transmitted through one of multiple antennas and one of multiple streams; generating, by the access point, a multi-stream portion of the frame, the multi-stream portion including a data field and a multi-stream long training field, the multi-stream long training field including station-specific decoding information for station-specific data in the data field; applying, by the access point, a beamforming indicator to the signal field of the omni portion, wherein applying the beamforming indicator comprises setting a status indicator in the signal field, wherein the status indicator is set to a first value when the multi-stream portion is beamformed, and wherein the status indicator is set to a second value when the multi-stream portion is not beamformed; and transmitting, by the access point, the frame.