Method and device for configuring field for instructing transmission of a-ppdu in wireless lan system

A receiving station (STA) in a wireless local area network (WLAN) system, the receiving STA comprising:

• a memory;
• a transceiver;
• and
• a processor being operatively connected to the memory and the transceiver,
• wherein the 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 High Efficiency (HE) PPDU for a primary 160 MHz channel and an Extreme High Throughput (EHT) PPDU for a secondary 160 MHz channel,
• wherein the EHT PPDU includes first and second Universal-Signal (U-SIG) fields,
• wherein the first U-SIG field includes an Uplink/Downlink (UL/DL) field,
• wherein the second U-SIG field includes a PPDU Type And Compression Mode field, and
• wherein the Validate field includes information indicating that the A-PPDU is transmitted, and
• wherein when a value of the UL/DL field is set to 0 and a value of the PPDU Type And Compression Mode field is set to 3, the PPDU Type And Compression Mode field includes information indicating that the A-PPDU is transmitted, and the EHT PPDU is transmitted in the Downlink Multi User Orthogonal Frequency Division Multiple Access (DL MU OFDMA) scheme.

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 High Efficiency (HE) PPDU for a primary 160 MHz channel and an Extreme High Throughput (EHT) PPDU for a secondary 160 MHz channel,
• wherein the EHT PPDU includes first and second Universal-Signal (U-SIG) fields,
• wherein the first U-SIG field includes an Uplink/Downlink (UL/DL) field,
• wherein the second U-SIG field includes a PPDU Type And Compression Mode field, and
• wherein the Validate field includes information indicating that the A-PPDU is transmitted, and
• wherein when a value of the UL/DL field is set to 0 and a value of the PPDU Type And Compression Mode field is set to 3, the PPDU Type And Compression Mode field includes information indicating that the A-PPDU is transmitted, and the EHT PPDU is transmitted in the Downlink Multi User Orthogonal Frequency Division Multiple Access (DL MU OFDMA) scheme.