Patent ID: 11968069
Assignee: LG ELECTRONICS INC.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 7:
8. A method in a wireless local area network (WLAN) system, the method comprising:
generating, by a transmitting station (STA), a Physical Protocol Data Unit (PPDU); and
transmitting, by the transmitting STA, the PPDU to a receiving STA,
wherein the PPDU includes a preamble and a data field,
wherein, based on a bandwidth of the PPDU being 80 MHz, the bandwidth includes lower and higher 484 tone-resource units (RUs),
wherein the data field includes first data for the lower 484-tone RU and second data for the higher 484-tone RU,
wherein the second data is data obtained by duplicating the first data and applying phase rotation thereto,
wherein the lower and higher 484-tone RUs are resource units including 484 tones,
wherein constellation mapping is performed on the first data based on binary phase shift keying (BPSK) and dual carrier modulation (DCM) in the lower 484-tone RU,
wherein a coding rate for the BPSK is 1/2,
wherein, based on the DCM being performed in the lower 484-tone RU, a number of data subcarriers per RU is equal to half a number of data subcarriers per RU in the absence of the DCM, and
wherein the first data and the second data are transmitted through a single stream.