A method for transmitting information of Acknowledgement/Negative ACK, ACK/NACK, sequence at a receiver in a wireless communication system, the method comprising: receiving a plurality of data from a transmitter; determining one ACK/NACK sequence including ACKs/NACKs corresponding to each data of the plurality of data; if only one ACK is included in the ACK/NACK sequence, mapping the only one ACK to a combination of a first Hybrid Automatic Repeat request, HARQ, transmission resource and a first modulation symbol corresponding to the only one ACK; transmitting the first modulation symbol to the transmitter using the first HARQ transmission resource, if two or more ACKs are included in the ACK/NACK sequence, mapping one ACK among the two or more ACKs to a combination of a second HARQ transmission resource and a second modulation symbol corresponding to the one ACK, and mapping a rest of ACK/NACKs other than the one ACK of the ACKs/NACKs to a combination of a third HARQ transmission resource and a third modulation symbol corresponding to the rest of ACKs/NACKs; and transmitting each of the second modulation symbol and the third modulation symbol to the transmitter using the second HARQ transmission resource and the third HARQ transmission resource, respectively, wherein: the first modulation symbol is different from the second modulation symbol and the third modulation symbol, and each of the first modulation symbol, the second modulation symbol, and the third modulation symbol correspond to a first constellation point, a second constellation point and a third constellation point, respectively. receiving a plurality of data from a transmitter; determining one ACK/NACK sequence including ACKs/NACKs corresponding to each data of the plurality of data; if only one ACK is included in the ACK/NACK sequence, mapping the only one ACK to a combination of a first Hybrid Automatic Repeat request, HARQ, transmission resource and a first modulation symbol corresponding to the only one ACK; transmitting the first modulation symbol to the transmitter using the first HARQ transmission resource, if two or more ACKs are included in the ACK/NACK sequence, mapping one ACK among the two or more ACKs to a combination of a second HARQ transmission resource and a second modulation symbol corresponding to the one ACK, and mapping a rest of ACK/NACKs other than the one ACK of the ACKs/NACKs to a combination of a third HARQ transmission resource and a third modulation symbol corresponding to the rest of ACKs/NACKs; and transmitting each of the second modulation symbol and the third modulation symbol to the transmitter using the second HARQ transmission resource and the third HARQ transmission resource, respectively, wherein: the first modulation symbol is different from the second modulation symbol and the third modulation symbol, and each of the first modulation symbol, the second modulation symbol, and the third modulation symbol correspond to a first constellation point, a second constellation point and a third constellation point, respectively. the first modulation symbol is different from the second modulation symbol and the third modulation symbol, and each of the first modulation symbol, the second modulation symbol, and the third modulation symbol correspond to a first constellation point, a second constellation point and a third constellation point, respectively.