Method and device for scheduling in wireless communication system supporting multi-connectivity

A method performed by a base station in a wireless communication system, the method comprising:

• transmitting first information including configuration information related to cell groups;
• transmitting second information related to an interface used for exchanging scheduling information between cells included in the cell groups;
• transmitting, through a control channel of a first cell included a first cell group among the cell groups, based on the second information, third information including scheduling information about a second cell included in a second cell group among the cell groups, wherein the first cell group is different from the second cell group;
• and
• performing a transmission/reception operation with a terminal through a data channel of the second cell, based on the third information.

A terminal in a wireless communication system, the terminal comprising:

• a transceiver;
• and
• a controller connected with the transceiver and configured to:
• receive, via the transceiver, first information including configuration information related to cell groups,
• receive, via the transceiver, second information related to an interface used for exchanging scheduling information between cells included in the cell groups,
• receive, via the transceiver, through a control channel of a first cell included in a first cell group among the cell groups, based on the second information, third information including scheduling information about a second cell included in a second cell group among the cell groups, wherein the first cell group is different from the second cell group, and
• perform a transmission/reception operation, via the transceiver, with a base station, through a data channel of the second cell, based on the third information.

A base station (BS) in a wireless communication system, the BS comprising:

• a transceiver;
• and
• a controller connected with the transceiver and configured to:
• transmit, via the transceiver, first information including configuration information related to cell groups,
• transmit, via the transceiver, second information related to an interface used for exchanging scheduling information between cells included in the cell groups,
• transmit, via the transceiver, through a control channel of a first cell included in a first cell group among the cell groups, based on the second information, third information including scheduling information about a second cell included in a second cell group among the cell groups, wherein the first cell group is different from the second cell group, and
• perform a transmission/reception operation, via the transceiver, with a terminal, through a data channel of the second cell, based on the third information.