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

Claim 0:
1. A method in a wireless local area network (WLAN) system, the method comprising:
decoding, by a receiving STA, a Physical Protocol Data Unit (PPDU),
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.