Apparatus and method for performing user terminal selection operation and beam forming operation in wireless communication system supporting mimo technology

A method of transmitting feedback information by a receiving apparatus in a wireless communication system supporting a multiple input multiple output (MIMO) scheme, the method comprising:

• transmitting, to a transmitting apparatus, an antenna group identifier (ID) of one or more antenna groups used by the transmitting apparatus and the feedback information including information related to channel quality which the receiving apparatus is capable of acquiring if the one or more antenna groups are used,
• wherein each of the antenna groups includes one or more antennas.

A method of receiving feedback information by a transmitting apparatus in a wireless communication system supporting a multiple input multiple output (MIMO) scheme, the method comprising:

• receiving, from a receiving apparatus, an antenna group identifier (ID) of one or more antenna groups used by the transmitting apparatus and the feedback information including information related to channel quality which the receiving apparatus is capable of acquiring if the one or more antenna groups are used,
• wherein each of the antenna groups includes one or more antennas.

A receiving apparatus in a wireless communication system supporting a multiple input multiple output (MIMO) scheme, the receiving apparatus comprising:

• a transmitter configured to transmit, to a transmitting apparatus, an antenna group identifier (ID) of one or more antenna groups used by the transmitting apparatus and feedback information including information related to channel quality which the receiving apparatus is capable of acquiring if the one or more antenna groups are used,
• wherein each of the antenna groups includes one or more antennas.