Method and device for performing preamble-puncturing-based communication in wireless lan system

A first station (STA) performing communication in a wireless LAN system, the first STA:

• at least one transceiver;
• and
• at least one processor coupled to the one or more transceivers;
• wherein the at least one processor is configured to:
• receive, from a second STA through the at least one transceiver, an operation element including first information related to availability of at least one frequency unit through a beacon frame;
• and
• receive, from the second STA, a frame including a control field including second information related to availability of the at least one frequency unit,
• wherein the availability of the at least one frequency unit indicated by the second information is based on the first information.

A second station (STA) performing communication in a wireless LAN system, the second STA:

• at least one transceiver;
• and
• at least one processor coupled to the one or more transceivers;
• wherein the at least one processor is configured to:
• transmit, to a first STA through the at least one transceiver, an operation element including first information related to availability of at least one frequency unit through a beacon frame;
• and
• transmit, to the first STA through the at least one transceiver, a frame including a control field including second information related to availability of the at least one frequency unit,
• wherein the availability of the at least one frequency unit indicated by the second information is based on the first information.