METHOD AND APPRATUS FOR TRANSMITTING ACK/NACK

摘要

PURPOSE: A method and an apparatus for transmitting reception success information for allocating PHICH without the collision of wireless resource are provided to perform cyclic shift of the reference signal according to wireless link control information. CONSTITUTION: Information is received from a base station about reference signal(S331). For the dynamic loop cloth, the circulation cloth about the reference signal is on a one-to-one basis mapped with the information. A DMRS field in DCI format which is cyclically shifted with a cyclic shift value determined based on the dynamic cyclic shift value to the base station. The acknowledge information of transmitted-data is received through radio resources of a downlink channel identified based on a modifier which is mapped to cyclic shift for DMRS field in DCI format of the downlink channel in which the circulation.