Method and apparatus for reporting channel state information in wireless communication system

A user equipment for reporting channel status information (CSI) in a wireless communication system, the user equipment comprising:

• a receiver;
• a transmitter;
• and
• a processor,
• wherein the processor is configured to receive, from a base station, a channel status information-reference signal (CSI-RS) based on CSI-RS configuration information provided from the base station, through the receiver and report, to the base station, the CSI generated by using the CSI-RS, through the transmitter, and
• the CSI-RS configuration information includes a plurality of CSI-RS configurations for a first domain antenna group of a 2-dimensional antenna structure of the base station.

A method for receiving channel status information (CSI) by a base station in a wireless communication system, the method comprising:

• providing the CSI to a user equipment, and transmitting, to the user equipment, a channel status information-reference signal (CSI-RS) based on CSI-RS configuration information;
• and
• receiving the CSI generated by the user equipment by using the CSI-RS from the user equipment,
• wherein the CSI-RS configuration information includes a plurality of CSI-RS configurations for a first domain antenna group of a 2-dimensional antenna structure of the base station.

A base station for receiving channel status information (CSI) in a wireless communication system, the base station comprising:

• a receiver;
• a transmitter;
• and
• a processor,
• wherein the processor is configured to provide the CSI to a user equipment, transmit, to the user equipment, a channel status information-reference signal (CSI-RS) based on CSI-RS configuration information, through the transmitter, and receive the CSI generated by the user equipment by using the CSI-RS from the user equipment through the receiver,
• wherein the CSI-RS configuration information includes a plurality of CSI-RS configurations for a first domain antenna group of a 2-dimensional antenna structure of the base station.