Method and apparatus for processing feedback information in wireless communication system supporting beamforming

A method by a terminal in a wireless communication system supporting a beamforming, the method comprising:

• receiving reference signals which are transmitted from a base station via transmission beams of the base station, via reception beams of the terminal;
• identifying, among the beam combinations of the transmission beams and the reception beams, predetermined numbers of a first beam combinations maximizing a reception power of the reference signals;
• and
• determining beam related information by selecting, among the first beam combinations, at least one second beam combination based on channel capacities of the first beam combinations.

A method by a terminal in a wireless communication system supporting a beamforming, the method comprising:

• receiving reference signals which are transmitted from a base station via transmission beams of the base station, via reception beams of the terminal;
• identifying channel capacities for beam combinations of the transmission beams and the reception beams;
• and
• determining beam related information by selecting, among the beam combinations, at least one beam combination based on the channel capacities for the beam combinations,
• wherein the identifying of the channel capacities comprises averaging a channel state for at least one subcarrier in which at least one of the transmission beams including the same identifier is transmitted, and identifying the channel capacities based on the averaged channel state.

A method by a terminal in a wireless communication system supporting a beamforming, the method comprising:

• receiving reference signals which are transmitted from a base station via transmission beams of the base station, via reception beams of the terminal, in a first superframe including at least one frame;
• generating first feedback information for beam combinations of the transmission beams and the reception beams, and transmitting the generated first feedback information to the base station at a first predetermined timing;
• receiving reference signals which are transmitted from the base station via transmission beams of the base station, via reception beams of the terminal, while a first frame in a second superframe is elapsed after the first superframe is arrived;
• and
• generating second feedback information for the beam combinations based on the first superframe and the first frame in the second superframe, and transmitting the generated second feedback information to the base station at a second predetermined timing.

A terminal in a wireless communication system supporting a beamforming, the terminal comprising:

• a transmitting and receiving unit configured to transmit and receive a signal to and from a base station;
• and
• at least one processor configured to:
• receive reference signals which are transmitted from a base station via transmission beams of the base station, via reception beams of the terminal,
• determine reception power related information for beam combinations of the transmission beams and the reception beams,
• identify, among the beam combinations, at least one first beam combination of which the reception power related information is equal to or greater than a predetermined value, and
• determine beam related information by selecting, among the at least one first beam combination, at least one second beam combination based on channel capacities of the at least one first beam combination.

A terminal in a wireless communication system supporting a beamforming, the terminal comprising:

• a transmitting and receiving unit configured to transmit and receive a signal to and from a base station;
• and
• at least one processor configured to:
• receive reference signals which are transmitted from the base station via transmission beams of the base station, via reception beams of the terminal,
• identify, among the beam combinations of the transmission beams and the reception beams, predetermined numbers of a first beam combinations maximizing a reception power of the reference signals, and
• determine beam related information by selecting, among the first beam combinations, at least one second beam combination based on channel capacities of the first beam combinations.

A terminal for determining a beam in a wireless communication system supporting a beamforming, the terminal comprising:

• a transmitting and receiving unit configured to transmit and receive a signal to and from a base station;
• and
• at least one processor configured to:
• receive reference signals which are transmitted from the base station via transmission beams of the base station, via reception beams of the terminal,
• identify channel capacities for beam combinations of the transmission beams and the reception beams, and
• determine beam related information by selecting, among the beam combinations, at least one beam combination based on the channel capacities for the beam combinations
• wherein the processor averages a channel state for at least one subcarrier in which at least one of the transmission beams including the same identifier is transmitted, and identifies the channel capacities based on the averaged channel state.

A terminal for transmitting feedback information in a wireless communication system supporting a beamforming, the terminal comprising:

• a transmitting and receiving unit configured to transmit and receive a signal to and from a base station;
• and
• at least one processor configured to:
• receive reference signals which are transmitted from the base station via transmission beams of the base station, via reception beams of the terminal, in a first superframe including at least one frame,
• generate first feedback information for beam combinations of the transmission beams and the reception beams,
• transmit the generated first feedback information to the base station at a first predetermined timing,
• receive reference signals which are transmitted from the base station via transmission beams of the base station, via reception beams of the terminal, while a first frame in a second superframe is elapsed after the first superframe is arrived,
• generate second feedback information for the beam combinations based on the first superframe and the first frame in the second superframe, and
• transmit the generated second feedback information to the base station at a second predetermined timing.