Carrier aggregation method and device in wireless communication system

A method of a terminal, the method comprising:

• transmitting and receiving data to and from a first carrier corresponding to a first bandwidth;
• receiving, from the first carrier, configuration information including information for an initial access to a second carrier corresponding to a second bandwidth;
• and
• transmitting and receiving data to and from the second carrier, based on the configuration information.

A base station comprising:

• a transceiver configured to transmit and receive signals to and from other network entity;
• and
• a controller configured to:
• transmit and receive data to and from a terminal through a first carrier corresponding to a first bandwidth,
• transmit, to the terminal through the first carrier, configuration information including information for an initial access to a second carrier corresponding to a second bandwidth, and
• transmit and receive data to and from the terminal through the second carrier, based on the configuration information.

A terminal comprising:

• a transceiver configured to transmit and receive signals to and from other network entity;
• and
• a controller configured to:
• transmit and receive data to and from a first carrier corresponding to a first bandwidth,
• receive, from the first carrier, configuration information including information for an initial access to a second carrier corresponding to a second bandwidth, and
• transmit and receive data to and from the second carrier, based on the configuration information.

The terminal of claim 16,

• wherein the controller is further configured to:
• receive a reference signal in a resource determined based on reference signal related information when the reference signal related information is included in the configuration information, and
• transmit channel state information determined based on the reference signal,
• wherein the first bandwidth includes a predetermined bandwidth for the base station, and
• wherein the second bandwidth includes a bandwidth other than the first bandwidth or includes the first bandwidth.