Patent ID: 8830815

Claim:
A method for wireless communication, the method comprising: generating a Physical Layer Convergence Protocol Packet Data Unit (PPDU) having a preamble and a payload, wherein symbols of the PPDU each include 128 total (orthogonal frequency-division multiplexing) OFDM tones or 256 total OFDM tones, and wherein the preamble includes: a signal (SIG) field symbol having 108 OFDM data tones if the symbols of the PPDU include 128 total OFDM tones or having 234 OFDM data tones if the symbols of the PPDU include 256 total OFDM tones, wherein the SIG field symbol indicates at least one of an amount of data in the payload or a duration of time to transmit the PPDU, wherein the SIG field symbol further indicates whether the payload is to be transmitted in a single user mode or a multi-user mode, and if the payload is to be transmitted in the multi-user mode the SIG field symbol further indicates a group identifier (ID) that identifies at least one receiver of the payload; and a signal B (SIG-B) field symbol that indicates a modulation and coding rate scheme associated with the payload; and transmitting the PPDU via a television broadcast frequency spectrum.