Methods and user equipment (UE) apparatuses are provided to transmit a control signal using a first sequence or a second sequence, in response to a detected control channel. A method includes determining a first resource for the control signal transmission from a sum of a lowest control channel element (CCE) index of the detected control channel and a first offset, if the UE is not configured to use the second sequence by higher layer signaling; determining a second resource for the control signal transmission from a sum of the lowest CCE index of the detected control channel and a second offset, if the UE is configured to use the second sequence by the higher layer signaling; and transmitting the control signal in the first resource or in the second resource.