Patent ID: 9729371
Date: 2017-08-08
CPC Classifications: H04L,H04W

Claim:
1. A method of generating a multi-user physical layer (PHY) data unit for transmission via a communication channel, the method comprising: generating, at a communication device, a first preamble portion of the multi-user PHY data unit; generating, at the communication device, a plurality of training fields of the multi-user PHY data unit for transmission after the first preamble portion; generating, at the communication device, a second preamble portion of the multi-user PHY data unit for transmission after the plurality of training fields, including: generating, at the communication device, a data portion of the multi-user PHY data unit for transmission after the second preamble portion, wherein a number of guard tones, direct current (DC) tones, and pilot tones in the second preamble portion is equal to a number of guard tones, DC tones, and pilot tones in the data portion of the multi-user PHY data unit; and transmitting, by the communication device, the multi-user PHY data unit.