Patent ID: 8184544

Claim:
A method of transmitting feedback data in a multiple antenna system, the method comprising: receiving a request message of feedback data on a downlink channel, the request message comprising uplink scheduling information; selecting a set of M subbands within a plurality of subbands, wherein M is greater than or equal to 1; generating the feedback data, the feedback data comprising a frequency selective PMI (precoding matrix indicator), a frequency flat PMI, a best band CQI (channel quality indicator) and a whole band CQI, the frequency selective PMI indicating an index of a precoding matrix selected from a codebook over the M selected subbands, the frequency flat PMI indicating an index of a precoding matrix selected from the codebook over the plurality of subbands, the best band CQI indicating a CQI value over the M selected subbands, the whole band CQI indicating a CQI value over the plurality of subbands; and transmitting the feedback data on an uplink channel allocated to the uplink scheduling information.