Method and device for transmitting and receiving aggregated physical layer protocol data unit in wireless lan system

A first station (STA) comprising:

• at least one transceiver;
• and
• at least one processor connected to the at least one transceiver,
• wherein the at least one processor is configured to:
• receive, through the at least one transceiver, an aggregated physical layer protocol data unit (A-PPDU) header from a second STA;
• and
• receive, through the at least one transceiver, an A-PPDU from the second STA based on the A-PPDU header,
• wherein the A-PPDU header includes first information related to at least one frequency resource unit for latency sensitive (LS) data transmission and second information related to timing for the LS data transmission.

A second station (STA) comprising:

• at least one transceiver;
• and
• at least one processor connected to the at least one transceiver,
• wherein the at least one processor is configured to:
• transmit, through the at least one transceiver, an aggregated physical layer protocol data unit (A-PPDU) header from a first STA;
• and
• transmit, through the at least one transceiver, an A-PPDU to the first STA based on the A-PPDU header,
• wherein the A-PPDU header includes first information related to at least one frequency resource unit for latency sensitive (LS) data transmission and second information related to timing for the LS data transmission.