Method and device for transmitting and receiving frame in consideration of length of data in communication system supporting multiple links

A method of a first device, the method comprising:

• receiving a first frame from a second device in a first transmit opportunity (TXOP) of a first link;
• receiving a second frame from the second device in a second TXOP of a second link;
• and
• in response that information included in the first frame indicates that a first reception response for the first link is transmitted on the second link, transmitting the first reception response for the first frame and a second reception response for the second frame to the second device on the second link,
• wherein the first TXOP is shorter than the second TXOP, and a reception completion time of the second frame is after a reception completion time of the first frame.

A method of a first device, the method comprising:

• receiving a first frame from a second device in a first transmit opportunity (TXOP) of a first link;
• receiving a second frame from the second device in a second TXOP of a second link;
• and
• in response that information included in the first frame requests to transmit a first reception response frame for the first frame on a third link that does not have a non-simultaneous transmit and receive (NSTR) link pair relationship with the first link, transmitting the first reception response frame to the second device on the third link.