Patent ID: 8320337

Claim:
A method of receiving acknowledgement (ACK) or negative ACK (NACK) information about data transmitted to a base station in a terminal of a wireless communication system, the method comprising: receiving cyclic shift information for reference signal from the base station; transmitting, to the base station, the data and a reference signal having a cyclic shift value, the cyclic shift value being determined based on a dynamic cyclic shift value mapped one-to-one to the cyclic shift information for the reference signal, wherein the cyclic shift information for the reference signal is mapped one-to-one to the dynamic cyclic shift value according to Table 1; and receiving, from the base station, ACK or NACK information about the transmitted data through a radio resource of a downlink channel, the radio resource of the downlink channel being identified based on a modifier mapped one-to-one to the cyclic shift information for the reference signal TABLE 1 Cyclic shift information Dynamic cyclic for reference signal shift value 000 0 001 6 010 3 011 4 100 2 101 8 110 10 111 9.