Patent ID: 11943751
Assignee: LG ELECTRONICS INC.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 8:
9. A method in a wireless local area network (WLAN) system, the method comprising:
configuring, by a transmitting station (STA), a physical protocol data unit (PPDU),
wherein the PPDU includes a legacy signal (L-SIG) field, a repeated L-SIG (RL-SIG) field which is a repeat of the L-SIG field, and a Universal Signal (U-SIG) field contiguous to the RL-SIG field,
wherein the PPDU is an extremely high throughput (EHT) PPDU,
wherein the L-SIG field includes a length field which is set to a value satisfying a condition that a remainder is zero when the length field is divided by three,
wherein the U-SIG field is transmitted through first through fourth symbols,
wherein the first symbol includes a physical version identifier having a length of three bits,
wherein the physical version identifier is set to zero to identify the EHT PPDU,
wherein the second symbol includes information in which bit information of the first symbol is repeated,
wherein the fourth symbol includes information in which bit information of the third symbol is repeated,
wherein the PPDU is configured based on one of a plurality of transmission modes including a first mode related to an Extended Range (ER) preamble and a second mode related to duplicate transmission,
wherein a constellation mapping pattern of the first and second symbols is determined based on a transmission mode of the PPDU, and
wherein the constellation mapping pattern for the first mode has a first mapping pattern, and the constellation mapping pattern for the second mode has a second mapping pattern;
transmitting, by the transmitting STA, the PPDU to a receiving STA.