Method and device for performing sensing measurement in wireless lan system

A station (STA) used in a wireless LAN system, the STA comprising:

• at least one transceiver;
• and
• at least one processor coupled with the at least one transceiver,
• wherein the at least one processor is configured to:
• receive a sensing null data packet announcement (NDPA) frame from an access point (AP);
• and
• receive an NDP from the AP;
• wherein the sensing NDPA frame includes a sounding dialog token field and a STA info field including common information related to sensing measurement for a plurality of STAs,
• wherein the STA info field is located after the sounding dialog token field, and
• wherein a value of a NDP announcement variant subfield of the sounding dialog token field is identically set to a value for a ranging NDPA frame and an association identifier (AID) value of the STA info field is set to a pre-determined value, to identify the sensing NDPA frame.

An access point (AP) used in a wireless LAN system, the AP comprising:

• at least one transceiver;
• and
• at least one processor coupled with the at least one transceiver,
• wherein the at least one processor is configured to:
• transmit a sensing null data packet announcement (NDPA) frame to a station (STA);
• and
• transmit an NDP to the STA;
• wherein the sensing NDPA frame includes a sounding dialog token field and a STA info field including common information related to sensing measurement for a plurality of STAs,
• wherein the STA info field is located after the sounding dialog token field, and
• wherein a value of a NDP announcement variant subfield of the sounding dialog token field is identically set to a value for a ranging NDPA frame and an association identifier (AID) value of the special STA info field is set to a pre-determined value, to identify the sensing NDPA frame.