| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an allocation method for avoiding collision of allocated resources, when a base station allocates resources to a plurality of PHICHs and user equipment transmits ACK/NACK.SOLUTION: In the step S200, a terminal transmits a plurality of code words on a PUSCH to a base station. In the step S210, the terminal receives from the base station a plurality of ACK/NACK signals, which indicates if each of the plurality of code words has been received, on PHICHs corresponding to the respective code words. Here, PHICH resources are determined in advance, and resources for which the respective PHICHs are mapped are determined based on the smallest PRB index among PRBs mapped by the PUSCH and on an uplink DMRS circular shift parameter, so as not to collide with each other.</p> |
