Terminal, method whereby terminal receives channel status information reference signals, base station, and method whereby base station transmits channel status information reference signals

A method in which a user equipment receives a Channel Status Information Reference Signal (CSI-RS) transmitted by a base station, the method comprising:

• receiving, from the base station, CSI-RS configuration information including a number of CSI-RS antenna ports for a horizontal antenna in an antenna array of the base station, and information indicating a CSI-RS pattern used for the CSI-RS for the horizontal antenna in a particular subframe;
• extracting a number of CSI-RS antenna ports for a vertical antenna and a CSI-RS pattern for the vertical antenna, based on the number of the CSI-RS antenna ports for the horizontal antenna and the information indicating the CSI-RS pattern for the horizontal antenna, when it is determined that a CSI-RS for the vertical antenna is transmitted;
• and
• receiving the CSI-RS for the horizontal antenna and the CSI-RS for the vertical antenna.

A base station for transmitting a Channel Status Information Reference Signal (CSI-RS), the base station comprising:

• a configuration information transmission unit for transmitting CSI-RS configuration information including information on a number of CSI-RS antenna ports for a horizontal antenna in an antenna array of the base station, and information indicating a CSI-RS pattern used for a CSI-RS for the horizontal antenna in a particular subframe;
• and
• an RS transmission unit for transmitting the CSI-RS for the horizontal antenna and a CSI-RS for a vertical antenna,
• wherein a number of CSI-RS antenna ports for the vertical antenna and a CSI-RS pattern for the vertical antenna are determined based on the number of the CSI-RS antenna ports for the horizontal antenna and the information indicating the CSI-RS pattern for the horizontal antenna, when the CSI-RS for the vertical antenna is transmitted.

A method for transmitting a Channel Status Information Reference Signal (CSI-RS) by a base station, the method comprising:

• transmitting CSI-RS configuration information including a number of CSI-RS antenna ports for a horizontal antenna in an antenna array of the base station, and information indicating a CSI-RS pattern used for a CSI-RS for the horizontal antenna in a particular subframe;
• and
• transmitting the CSI-RS for the horizontal antenna and a CSI-RS for a vertical antenna,
• wherein a number of CSI-RS antenna ports for the vertical antenna and a CSI-RS pattern for the vertical antenna are determined based on the number of the CSI-RS antenna ports for the horizontal antenna and the information indicating the CSI-RS pattern for the horizontal antenna, when the CSI-RS for the vertical antenna is transmitted.