Method and apparatus for providing antenna configuration information for massive multiple input multiple output in a wireless communication system

A method for transmitting a reference signal for supporting a plurality of antennas to a User Equipment (UE) at a Base Station (BS) in a wireless communication system, the method comprising:

• grouping the plurality of antennas into antenna groups comprising a predetermined number of antenna ports, wherein the antenna groups include a first antenna group and a second antenna group;
• transmitting first resource information on a first reference signal for the first antenna group and second resource information on a second reference signal for the second antenna group;
• transmitting polarization information about the antenna groups, wherein if a number of polarizations of the antenna groups is more than three, the polarization information includes information about the number of polarizations and polarization directions of the antenna groups;
• and
• transmitting the first reference signal and the second reference signal to the UE based on the first resource information and the second resource information, respectively.