Method and device for transmitting and receiving data by using multiple carriers in mobile communication system

A method for transmitting information by a base station in a communication system, the method comprising:

• transmitting, to a terminal, first information for configuring a secondary set of one or more serving cells associated with another base station, the first information being transmitted on a primary set of one or more serving cells associated with the base station;
• and
• transmitting, to the terminal, second information indicating activation or deactivation of at least one secondary cell (SCell),
• wherein at least one SCell associated with the secondary set of one or more serving cells is activated or deactivated based on the second information, if the second information is transmitted on the secondary set of one or more serving cells,
• wherein at least one SCell associated with the primary set of one or more serving cells is activated or deactivated based on the second information, if the second information is transmitted on the primary set of one or more serving cells,
• wherein the at least one SCell associated with the secondary set of one or more serving cells is identified based on the first information received from the base station and the second information received from the another base station, and
• wherein the second information comprises one or more bits, each of the one or more bits indicating activating or deactivating the at least one SCell.

A terminal in a communication system, the terminal comprising:

• a transceiver for transmitting and receiving a signal;
• and
• a controller coupled to the transceiver and configured to:
• receive, from a first base station, first information for configuring a secondary set of one or more serving cells associated with a second base station, the first information being received on a primary set of one or more serving cells associated with the first base station,
• receive second information indicating activation or deactivation of at least one secondary cell (SCell),
• activate or deactivate at least one SCell associated with the secondary set of one or more serving cells based on the second information, if the second information is received on the secondary set of one or more serving cells, and
• activate or deactivate at least one SCell associated with the primary set of one or more serving cells based on the second information, if the second information is received on the primary set of one or more serving cells,
• wherein the at least one SCell associated with the secondary set of one or more serving cells is identified based on the first information received from the first base station and the second information received from the second base station, and
• wherein the second information comprises one or more bits, each of the one or more bits indicating activating or deactivating the at least one SCell.

A base station in a communication system, the base station comprising:

• a transceiver for transmitting and receiving a signal;
• and
• a controller coupled to the transceiver and configured to:
• transmit, to a terminal, first information for configuring a secondary set of one or more serving cells associated with another base station, the first information being received on a primary set of one or more serving cells associated with the base station, and
• transmit, to the terminal, second information indicating activation or deactivation of at least one secondary cell (SCell),
• wherein at least one SCell associated with the secondary set of one or more serving cells is activated or deactivated based on the second information, if the second information is transmitted on the secondary set of one or more serving cells,
• wherein at least one SCell associated with the primary set of one or more serving cells is activated or deactivated based on the second information, if the second information is transmitted on the primary set of one or more serving cells,
• wherein the at least one SCell associated with the secondary set of one or more serving cells is identified based on the first information received from the base station and the second information received from the another base station, and
• wherein the second information comprises one or more bits, each of the one or more bits indicating activating or deactivating the at least one SCell.