Method and apparatus for transmitting and receiving data in communication system supporting multiple links

An operation method of a first device using multi-links in a wireless LAN, the operation method comprising:

• transmitting a first request-to-send (RTS) frame to a second device in a first link among the multi-links;
• receiving a first clear-to-send (CTS) frame from the second device in the first link, the first CTS frame being a response to the first RTS frame;
• in response to reception of the first CTS frame, transmitting a first data frame to the second device in the first link;
• and
• when a channel access operation in the second link among the multi-link is completed before a transmission time of the first data frame, transmitting a second data frame to the second device in the second link without an RTS-CTS operation.

An operation method of a first device using multi-links in a wireless LAN, the operation method comprising:

• performing a first channel access operation in a first link among the multi-links;
• performing a second channel access operation in a second link among the multi-links;
• and
• when the first channel access operation and the second channel access operation are completed, transmitting a request-to-send (RTS) frame to a second device in the first link and the second link.