Method and apparatus for transmitting and receiving control information in wireless communication system

A user equipment (UE) for receiving control information in a wireless communication system supporting communication via a backhaul link between a first base station (BS) and a second BS, the UE comprising:

• a receiver;
• and
• a controller configured to:
• receive, via the receiver from the first BS, control information for cancelling an interference caused to the UE by a downlink transmission of the second BS which is a neighboring BS of the first BS, the control information comprising a cell identifier of the second BS and transmission mode information including a multiple input multiple output (MIMO) used for a physical downlink shared channel (PDSCH) transmission of the second BS, and
• cancel, based on the received control information, the interference caused to the UE by the downlink-PDSCH transmission by the second BS.

A method performed by a first base station (BS) for transmitting control information in a wireless communication system supporting communication via a backhaul link between the first BS and a second BS, the method comprising:

• receiving, by the first BS from the second BS, information related to a downlink transmission of the second BS;
• generating, by the first BS, based on the received information, control information for cancelling an interference caused to a user equipment (UE) by the downlink transmission of the second BS which is a neighboring BS of the first BS, the control information comprising a cell identifier of the second BS and transmission mode information including a multiple input multiple output (MIMO) used for a physical downlink shared channel (PDSCH) transmission of the second BS;
• and
• transmitting, to the UE served by the first BS, the control information.

A first base station (BS) for transmitting control information in a wireless communication system supporting communication via a backhaul link between the first BS and a second BS, the first BS comprising:

• a transmitter;
• and
• a controller configured to:
• receive, from the second BS, information related to a downlink transmission of the second BS,
• generate, based on the received information, control information for cancelling an interference caused to a user equipment (UE) by the downlink transmission of the second BS which is a neighboring BS of the first BS, the control information comprising a cell identifier of the second BS and transmission mode information including a multiple input multiple output (MIMO) used for a physical downlink shared channel (PDSCH) transmission of the second BS, and
• transmit, to the UE served by the first BS, the control information.