APPARATUS AND METHOD FOR OPERATING DUPLICATION HARQ IN MOBILE COMMUNICATION SYSTEM

摘要

PURPOSE: An apparatus and a method for operating duplication HARQ in mobile communication system are provided to prevent the duplication of MAC PDU by determining whether MAC PDU is received repeatedly. CONSTITUTION: A terminal(300) transmits a sound reference signal or a demodulation reference signal to a base station(310). The base station transmits a TA command MAC CE to the terminal(312). The terminal compensate a reverse timing by applying a TA command according to the duplication phenomenon of the TA command MAC CE(314). The terminal transmits ACK to the base station to indicate the success of reception of the TA command MAC CE(316). The base station retransmits an MAC PDU including the TA command MAC CE to the terminal(318).