Patent ID: 11936577
Assignee: LG ELECTRONICS INC.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 8:
9. A receiving station (STA) in a wireless Local Area Network (LAN), the receiving STA comprising:
a memory;
a transceiver; and
a processor operatively coupled to the memory and the transceiver,
wherein the processor is configured to:
receive a Physical Protocol Data Unit (PPDU) from a transmitting STA; and
decode the PPDU,

wherein the PPDU is received based on an Orthogonal Frequency Division Multiple Access (OFDMA) scheme,
wherein the PPDU includes a Universal-Signal (U-SIG) field,
wherein the U-SIG field includes a Punctured Channel Information field for a bandwidth of the PPDU,
wherein the Punctured Channel Information field includes a 4-bit bitmap that indicates 20 MHz subchannel is punctured in 80 MHz frequency subblock,
wherein first to four bits of the 4-bit bitmap are arranged in ascending order from the lowest 20 MHz subchannel to the highest 20 MHz subchannel, and
wherein the first bit includes information on whether the lowest 20 MHz subchannel is punctured, the second bit includes information on whether the second lowest 20 MHz subchannel is punctured, and the third bit includes information on whether the third lowest 20 MHz subchannel is punctured, and the fourth bit includes information on whether the highest 20 MHz subchannel is punctured.