Method and device for transmitting/receiving data using cache memory in wireless communication system supporting relay node

A method for receiving, by a user equipment, a content using caching, comprising the steps of:

• receiving a first content requested by the user equipment from a base station;
• receiving a second content acting as interference to the first content from a relay node;
• and
• restoring the first content based on the first content and the second content.

A relay node transmitting a content using a cache memory, comprising:

• a caching memory configured to store at least a first content received from a serving cell and a second content received from a neighbor cell or a serving cell;
• a processor configured to select a content to be transmitted to a user equipment from among the first content requested by a user equipment and the second content acting as interference to the first content;
• and
• a transceiver configured to transmit the second content to the user equipment.