Patent ID: 8830917

Claim:
A method for generating a PHY data unit, the method comprising: generating, in a wireless communication system including communication devices that utilize physical layer (PHY) data units that conform to a first format to communicate information associated with a layer of a protocol stack above a media access channel (MAC) layer, a first indication that a plurality of PHY data units conforming to a second format will be transmitted, the first format being associated with a first number of symbols in a preamble, the second format being associated with a second number of symbols in the preamble and the second number being smaller than the first number, the plurality of PHY data units including the PHY data unit, the first indication being indicative of a number of PHY data units included in the plurality of PHY data units and conforming to the second format, and the number of PHY data units included in the plurality of PHY data units and conforming to the second format being greater than one; transmitting the first indication; receiving an acknowledgement including a second indication that the plurality of PHY data units conforming to the second format will be accepted; generating a preamble of the PHY data unit, wherein the preamble includes a second number of symbols, wherein the second number is smaller than the first number; and generating another portion of the PHY data unit.