Patent ID: 8605610

Claim:
An apparatus for receiving multicast/broadcast data, the apparatus comprising: a channel quality indication (CQI) estimation unit for estimating a CQI of a plurality of terminals based on known symbols received through a common pilot channel; a CQI transmission unit for transmitting a predetermined signal waveform according to the CQI of the plurality of terminals through a previously set common CQI feedback channel; wherein a sum of predetermined signal waveforms having a channel quality indication (CQI) of each terminal from the plurality of terminals is received included in a multicast/broadcast service group via the previously set common CQI feedback channel; and a data reception unit for receiving multicast/broadcast data according to an adaptive modulation and coding (AMC) option selected from at least two or more AMC options, and wherein the selected AMC option is configured based on one of M finite CQI levels.