METHOD AND APPARATUS FOR CONTROLLING RETRANSMISSION

摘要

PURPOSE: A method and an apparatus for controlling retransmission are provided to retransmit HARQ bust in case of failure of HARQ bust transmission by mixing synchronous an HARQ(Hybrid Automatic Repeat reQuest) and asynchronous HARQ properly. CONSTITUTION: In a method and an apparatus for controlling retransmission, a retransmission control apparatus(100) is composed of a retransmission decision unit(110), a transmission unit(120), and receiver(130). The retransmission decision unit determines one mode of a synchronous retransmission and asynchronous synchronous retransmission as a retransmission mode. The receiver receives an ACK from the receiving terminal, and the transmission unit transmits new data to the receiving terminal. The receiver receives an NAK from the receiving terminal. The transmission unit transmits retransmission data according to a decision from the retransmission decision unit.