Method and apparatus for transceiving data using plurality of carriers in mobile communication system

A communication method of a base station in a mobile communication system, the method comprising:

• receiving a secondary serving cell (SCell) add request message from a first base station for a primary serving cell (PCell);
• transmitting a SCell parameter and discontinuous reception (DRX) configuration information to the first base station;
• and
• transmitting a control message including a DRX media access layer (MAC) control element (CE),
• wherein the DRX configuration information is applied to a SCell of a second base station, if the second base station for the SCell is different from the first base station for the PCell.

A terminal comprising:

• a transceiver configured to communicate with a base station;
• and
• at least one processor configured to:
• control receiving, from a primary serving cell (PCell), a first control message including secondary serving cell (SCell) configuration information for an SCell and discontinuous reception (DRX) configuration information, and
• applying, if the first control message includes an indicator indicating that a first base station for the SCell is different from a second base station for the PCell, the DRX configuration information to the SCell of the first base station,
• wherein the at least one processor is further configured to control receiving a second control message including a DRX media access layer (MAC) control element (CE), determining whether the DRX MAC CE is received from one of a non-primary set serving cell and a primary set serving cell, and stopping, if the DRX MAC CE is received from the non-primary set serving cell, the DRX timer for the non-primary set serving cell.

A primary base station comprising:

• a transceiver configured to communicate with a terminal;
• and
• at least one processor configured to control transmitting, to a terminal, a first control message including secondary serving cell (SCell) configuration information for an SCell and discontinuous reception (DRX) configuration information, the first control message including an indicator indicating that a first base station for the SCell is different from a second base station the PCell,
• wherein the controller is further configured to control transmitting a second control message including a DRX media access layer (MAC) control element (CE).

A non-primary base station comprising:

• a transceiver configured to communicate with a terminal;
• and
• at least one processor configured to:
• control receiving a secondary serving cell (SCell) add request message from a first base station for a primary serving cell (PCell), and
• control transmitting a SCell parameter and discontinuous reception (DRX) configuration information to the first base station,
• wherein the DRX configuration information is applied to a SCell of a second base station, if the second base station for the SCell is different from the first base station for the PCell, and
• wherein the at least one processor is further configured to control transmitting a control message including a DRX media access layer (MAC) control element (CE).