Patent ID: 11917680
Assignee: LG ELECTRONICS INC.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A method performed in a Wireless Local Area Network (WLAN) system, the method comprising:
receiving, by a first station (STA), a physical protocol data unit (PPDU) for a sensing operation from an access point (AP),
wherein the PPDU has a total bandwidth of 80 MHz and includes a first subchannel allocated for a sensing operation of the first STA and a second subchannel allocated for a sensing operation of a second STA, wherein a bandwidth of the first subchannel is a multiple of 20 MHz,
wherein the PPDU includes a legacy signal (L-SIG) field includes a length field related to a length of the PPDU, wherein the length field is set to a value satisfying a condition that a remainder is zero when the length field is divided by three, wherein the L-SIG field has a bandwidth of 20 MHz and is duplicated in each subchannel of the 80 MHz,
wherein the PPDU further includes a repeated L-SIG (RL-SIG) field which is a repeat of the L-SIG field, wherein the RL-SIG field is contiguous to the L-SIG field in the PPDU,
wherein the PPDU further includes a first universal signal (U-SIG) field for the first subchannel, wherein the first U-SIG field includes first bandwidth bits indicating a bandwidth of the first subchannel, wherein the first U-SIG field has a bandwidth of 20 MHz and is duplicated in the first subchannel,
wherein the PPDU further includes a second U-SIG field for the second subchannel, wherein the second U-SIG field includes second bandwidth bits indicating a bandwidth of the second subchannel, wherein the second U-SIG field has a bandwidth of 20 MHz,
wherein the PPDU further includes a first extremely high throughput signal (EHT-SIG) field indicating at least one first resource unit (RU) allocated for the first STA, wherein the first EHT-SIG field is contiguous to the first U-SIG field in the PPDU, and
wherein the PPDU further includes a second EHT-SIG field indicating at least one second RU allocated for the second STA, wherein the second EHT-SIG field is contiguous to the second U-SIG field in the PPDU,
performing, by the first STA, the sensing operation based on the at least one first RU; and
transmitting, by the first STA, a result of the sensing operation.