Granted Patent B2

US 12,490,188 · App. 18/254,080 · Granted Dec 2, 2025

Inventors: Eunsung Park (Seoul, KR); Jinyoung Chun (Seoul, KR); Jinsoo Choi (Seoul, KR); Dongguk Lim (Seoul, KR)

Assignee: LG ELECTRONICS INC.

H04W52/0216H04L5/0044H04W84/12

Abstract

Claims (52)

1 . A method in a Wireless Local Area Network (WLAN) system, the method comprising:

receiving, by a receiving station (STA), an Aggregated-Physical Protocol Data Unit (A-PPDU) from a transmitting STA; and

decoding, by the receiving STA, the A-PPDU,

wherein the A-PPDU includes a first PPDU for a primary 80 MHz channel and a second PPDU for a secondary 80 MHz channel,

wherein the first PPDU includes a first Legacy-Short Training Field (L-STF), a first Legacy-Long Training Field (L-LTF), a first Legacy-Signal (L-SIG), and a first Repeated Legacy-Signal (RL-SIG), a High Efficiency-Signal-A (HE-SIG-A), a HE-SIG-B, a HE-STF, a HE-LTF, and a first data,

wherein the second PPDU includes a pre-padding field, a second L-STF, a second L-LTF, a second L-SIG, a second RL-SIG, a Universal-Signal (U-SIG), an Extremely High Throughput-Signal (EHT-SIG), and a second data,

wherein the pre-padding field is configured of a sequence having no cross-correlation with the first L-STF and the first L-LTF,

wherein the first PPDU is a PPDU supporting a HE WLAN system, and

wherein the second PPDU is a PPDU supporting an EHT WLAN system.

2 . The method of claim 1 , wherein the first PPDU further includes a HE-STF, and a HE-LTF,

wherein the second PPDU further includes an EHT-STF, and an EHT-LTF,

wherein the first PPDU is configured in order of the first L-STF, the first L-LTF, the first L-SIG, the first RL-SIG, the HE-SIG-A, the HE-SIG-B, the HE-STF, the HE-LTF, and the first data,

wherein the second PPDU is configured in order of the pre-padding field, the second L-STF, the second L-LTF, the second L-SIG, the second RL-SIG, the U-SIG, the EHT-SIG, the EHT-STF, the EHT-LTF, and the second data.

3 . The method of claim 2 , further comprising:

decoding, by the receiving STA, the second PPDU in the secondary 80 MHz channel during a Target Wake Time Service Period (TWT SP) when the receiving STA is an EHT STA to which Subchannel Selective Transmission (SST) is applied.

4 . The method of claim 2 , further comprising:

combining and decoding, by the receiving STA, the first L-SIG and the HE-SIG-A only in the primary 80 MHz channel when the receiving STA is a HE STA capable of 160 MHz band (HE STA),

wherein no signal for the secondary 80 MHz channel is detected by the receiving STA due to the pre-padding field.

5 . The method of claim 3 , wherein a length of the pre-padding field is set from the start of the first PPDU to the first L-STF or the first L-LTF,

wherein the second L-SIG includes information on a length after the second L-SIG in the second PPDU.

6 . The method of claim 1 , wherein the second PPDU is configured not to transmit any signal for a specific time period after the pre-padding field,

wherein the specific time is a time less than Short InterFrame Space (SIFS).

7 . A receiving station (STA) in a Wireless Local Area Network (WLAN) system, the receiving STA comprising:

a memory;

a transceiver; and

a processor operatively coupled to the memory and transceiver,

wherein processor is configured to:

receive an Aggregated-Physical Protocol Data Unit (A-PPDU) from a transmitting STA; and

decode the A-PPDU,

wherein the A-PPDU includes a first PPDU for a primary 80 MHz channel and a second PPDU for a secondary 80 MHz channel,

wherein the first PPDU includes a first Legacy-Short Training Field (L-STF), a first Legacy-Long Training Field (L-LTF), a first Legacy-Signal (L-SIG), and a first Repeated Legacy-Signal (RL-SIG), a High Efficiency-Signal-A (HE-SIG-A), a HE-SIG-B, a HE-STF, a HE-LTF, and a first data,

wherein the second PPDU includes a pre-padding field, a second L-STF, a second L-LTF, a second L-SIG, a second RL-SIG, a Universal-Signal (U-SIG), an Extremely High Throughput-Signal (EHT-SIG), and a second data,

wherein the pre-padding field is configured of a sequence having no cross-correlation with the first L-STF and the first L-LTF,

wherein the first PPDU is a PPDU supporting a HE WLAN system, and

wherein the second PPDU is a PPDU supporting an EHT WLAN system.

8 . A method in a Wireless Local Area Network (WLAN) system, the method comprising:

generating, by a transmitting station (STA), an Aggregated-Physical Protocol Data Unit (A-PPDU); and

transmitting, by the transmitting STA, the A-PPDU to a receiving STA,

wherein the A-PPDU includes a first PPDU for a primary 80 MHz channel and a second PPDU for a secondary 80 MHz channel,

wherein the first PPDU includes a first Legacy-Short Training Field (L-STF), a first Legacy-Long Training Field (L-LTF), a first Legacy-Signal (L-SIG), and a first Repeated Legacy-Signal (RL-SIG), a High Efficiency-Signal-A (HE-SIG-A), a HE-SIG-B, a HE-STF, a HE-LTF, and a first data,

wherein the second PPDU includes a pre-padding field, a second L-STF, a second L-LTF, a second L-SIG, a second RL-SIG, a Universal-Signal (U-SIG), an Extremely High Throughput-Signal (EHT-SIG), and a second data,

wherein the pre-padding field is configured of a sequence having no cross-correlation with the first L-STF and the first L-LTF,

wherein the first PPDU is a PPDU supporting a HE WLAN system, and

wherein the second PPDU is a PPDU supporting an EHT WLAN system.

9 . The method of claim 8 , wherein the first PPDU further includes a HE-STF, and a HE-LTF,

wherein the second PPDU further includes an EHT-STF, and an EHT-LTF,

wherein the first PPDU is configured in order of the first L-STF, the first L-LTF, the first L-SIG, the first RL-SIG, the HE-SIG-A, the HE-SIG-B, the HE-STF, the HE-LTF, and the first data,

wherein the second PPDU is configured in order of the pre-padding field, the second L-STF, the second L-LTF, the second L-SIG, the second RL-SIG, the U-SIG, the EHT-SIG, the EHT-STF, the EHT-LTF, and the second data.

10 . The method of claim 8 , wherein a length of the pre-padding field is set from the start of the first PPDU to the first L-STF or the first L-LTF,

wherein the second L-SIG includes information on a length after the second L-SIG in the second PPDU.

11 . The method of claim 8 , wherein the second PPDU is configured not to transmit any signal for a specific time period after the pre-padding field,

wherein the specific time is a time less than Short InterFrame Space (SIFS).

Assignments (1)

Priority Claims (2)

Continuity (1)

References Cited (10)