Method for transmitting data via shared relay station in mobile communication system

A method of transmitting data through a shared relay station in a mobile communication system, comprising the steps of:

• requesting, by a terminal, a serving base station for data local forwarding;
• overhearing, by the shared relay station, the data local forwarding request performed by the terminal;
• transmitting, by the serving base station, a hold message to the terminal and requesting a controller of a core network for the data local forwarding via a wired backbone network, when a data local forwarding request message is received from the terminal;
• determining, by the controller of the core network, whether or not the data local forwarding is possible based on position information of terminals and replying to the serving base station and adjacent base stations connected to a terminal to receive data in the data local forwarding;
• transmitting, by the serving base station, a response message received from the controller of the core network to the shared relay station;
• transmitting, by the serving base station, the response message to the shared relay station;
• transmitting, by the serving base station, a message of response to the data local forwarding request to the terminal;
• transmitting, by the terminal requesting the serving base station for the data local forwarding, data;
• and
• receiving, by the serving base station, the transmitted data.