| CPC H04L 5/0046 (2013.01) [H04L 5/0041 (2013.01); H04L 5/0092 (2013.01); H04L 27/2602 (2013.01); H04W 84/12 (2013.01)] | 14 Claims |
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1. A method in a wireless Local Area Network (LAN) system, the method comprising:
receiving, by a receiving station (STA), a Physical Protocol Data Unit (PPDU) through a broadband from a transmitting STA; and
decoding, by the receiving STA, the PPDU,
wherein the PPDU is received based on an Orthogonal Frequency Division Multiple Access (OFDMA) scheme,
wherein the PPDU includes a first signal field,
wherein the first signal field includes first information on a preamble puncturing pattern for each 80 MHz band in the broadband,
wherein the first information is set as a 4-bit bitmap for each 80 MHz band,
wherein the each 80 MHz band includes first to fourth 20 MHz channels,
wherein the first to fourth 20 MHz channels are arranged in the order of low frequency to high frequency, and
among the 4-bit bitmap, a first bit includes information on whether the first 20 MHz channel is punctured, a second bit includes information on whether the second 20 MHz channel is punctured, and a third bit includes information on whether the third 20 MHz channel is punctured, and a fourth bit includes information on whether the fourth 20 MHz channel is punctured.
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