Channel state information transmission/reception method and apparatus for use in wireless communication system

摘要

A method and an apparatus for transmitting/receiving channel state information for use in multi-antenna system are provided. A signal communication method of a base station having a plurality of antennas in a wireless communication system includes determining antenna ports of first and second directions based on directions of the plurality of antennas, allocating channel measurement resources for the respective antenna ports to a terminal, transmitting a feedback configuration to the terminal according to the channel measurement resources, and receiving feedback information from the terminal based on the channel measurement resource and the feedback configuration. The signal transmission/reception method and apparatus are advantageous in transmitting/receiving channel state information efficiently in the system using a plurality of antennas.

主权项

1. A signal communication method of a base station having a plurality of antennas in a wireless communication system, the method comprising:
identifying antenna ports of first and second directions based on directions of the plurality of antennas; transmitting at least one reference signal for the antenna ports to a terminal; transmitting a feedback configuration to the terminal, the feedback configuration including a value of rank indicator (RI) for the first direction; and receiving feedback information from the terminal based on the at least one reference signal and the feedback configuration, wherein the feedback information comprises the value of RI for the second direction identified based on the at least one reference signal and the value of RI for the first direction.