A user terminal apparatus includes a receiver to receive control information, and a data processor, coupled to the receiver, to select a sequence from a subset of different sequences. The difference sequences are based on a base sequence, and the subset of different sequences depends on the control information. The different sequences are respectively associated with different message sizes or different radio conditions at the user terminal apparatus, have different cyclic shifts, and are arranged in an order of increasing cyclic shift. A transmitter, coupled to the data processor, transmits the selected sequence.