Method of transmitting and receiving uci in wireless communication system and apparatus therefor

A method of receiving uplink control information (UCI) by a base station in a wireless communication system, the method:

• transmitting downlink control information (DCI) indicating a transmission time of the UCI through a prescribed frequency band in a first subframe;
• transmitting a downlink data based on the DCI;
• and
• receiving UCI associated with the downlink data in a second subframe based on the indicated transmission time of the UCI,
• wherein the prescribed frequency band on which the DCI is transmitted is configured by a plurality of downlink control channel units (DCCUs) for transmitting the DCI, and
• wherein the UCI is received on a first uplink control channel unit (UCCU) in the second subframe, a frequency band of the first UCCU being same as a frequency band corresponding to a DCCU of a lowest frequency among the plurality of DCCUs.

A user equipment for transmitting uplink control information (UCI) in a wireless communication system, the user equipment comprising:

• a receiver;
• a transmitter;
• and
• a processor configured to control:
• the receiver to receive downlink control information (DCI) indicating a transmission time of the UCI through a prescribed frequency band in a first subframe;
• the receiver to receive a downlink data based on the DCI;
• and
• the transmitter to transmit UCI associated with the downlink data in a second subframe based on the indicated transmission time of the UCI,
• wherein the prescribed frequency band on which the DCI is transmitted is configured by a plurality of downlink control channel units (DCCUs) for transmitting the DCI, and
• wherein the processor is configured to control the transmitter to transmit the UCI on a first uplink control channel unit (UCCU) in the second subframe, a frequency band of the first UCCU being same as a frequency band corresponding to a DCCU of a lowest frequency among the plurality of DCCUs.

A base station receiving uplink control information (UCI) in a wireless communication system, the base station comprising:

• a transmitter;
• a receiver;
• and
• a processor configured to control:
• the transmitter to transmit downlink control information (DCI) indicating a transmission time of the UCI through a prescribed frequency band in a first subframe;
• and
• the transmitter to transmit a downlink data based on the DCI;
• the receiver to receive UCI associated with the downlink data in a second subframe based on the indicated transmission time of the UCI,
• wherein the prescribed frequency band on which the DCI is transmitted is configured by a plurality of downlink control channel units (DCCUs) for transmitting the DCI, and
• wherein the processor is configured to control the receiver to receive the UCI on a first uplink control channel unit (UCCU) in the second subframe, a frequency band of the first UCCU being same as a frequency band corresponding to a DCCU of a lowest frequency among the plurality of DCCUs.