Patent ID: 8867457

Claim:
A method of transmitting control information in a wireless communication system, the method comprising: generating, by a user equipment, a cyclically shifted sequence by cyclically shifting a base sequence by a cyclic shift amount; generating, by the user equipment, a modulation symbol for an acknowledgement (ACK)/not-acknowledgment (NACK) information; generating, by the user equipment, a modulated sequence based on the modulation symbol and the cyclically shifted sequence; and transmitting, by the user equipment, the modulated sequence in a mixed resource block, the mixed resource block including T CS subcarriers, wherein at least one cyclic shift in the mixed resource block is allocated to a resource for a channel quality indicator (CQI), and wherein a number of cyclic shifts used for the CQI in the mixed resource block is equal to or less than ⌈ AN cs 8 ⌉ · ( T cs - AN cs - 2 ) , where AN CS is a number of cyclic shifts used for the ACK/NACK information in the mixed resource block.