Device and method for reconfiguring component carrier in wireless communication system that operates plurality of component carriers, and device and method for transmitting rrc connection-reconfiguration message therefor

A Component Carrier (CC) reconfiguration method in a communication system that uses multiple component carriers, the method comprising:

• receiving a Radio Resource Control (RRC) connection reconfiguration message;
• determining CC configuration information included in the RRC connection reconfiguration message;
• performing CC reconfiguration by performing one or more procedures from among CC addition (Add), CC modification (Mod), and CC release (Release) based on the CC configuration information;
• and
• generating and transmitting an RRC connection reconfiguration complete message.

A Radio Resource Control (RRC) connection reconfiguration message transmitting device in a communication system that uses multiple component carriers, the device comprising:

• a CC configuration information generating unit to generate, for each CC, CC configuration information to include one or more information from among CC unique information and separate CC index information that matches the CC unique information;
• an RRC connection reconfiguration message generating unit to generate an RRC connection reconfiguration message to include the CC configuration information;
• a message transmitting unit to transmit the generated RRC connection reconfiguration message;
• and
• an RRC connection reconfiguration complete message receiving unit to receive an RRC connection reconfiguration complete message.

A Radio Resource Control (RRC) connection reconfiguration message transmitting method in a communication system that uses multiple component carriers, the method comprising:

• generating, for each CC, CC configuration information to include one or more information from among CC unique information and separate CC index information that matches the CC unique information;
• generating an RRC connection reconfiguration message to include the CC configuration information;
• transmitting the generated RRC connection reconfiguration message;
• and
• receiving an RRC connection reconfiguration complete message.