A method for a hybrid automatic repeat request, HARQ, procedure by a terminal in a wireless communication system, the method comprising: receiving, from a base station , a system information block type 1, SIB 1, including first time division duplex, TDD, configuration information; determining a TDD configuration for the terminal based on the first TDD configuration information included in the SIB 1; receiving, from the base station , a dedicated radio resource control, RRC, reconfiguration message including second TDD configuration information for identifying a reference k for dynamic TDD configuration, wherein the reference k for the dynamic TDD configuration is an interval between a transmission of downlink data and a transmission of a feedback corresponding to the downlink data; determining , when the RRC message including the second TDD configuration information is received, an HARQ round trip time, RTT, timer equal to the reference k for the dynamic TDD configuration plus four; receiving, from the base station , an enhanced interference mitigation and traffic adaptation, eIMTA, L1 signal message including information for a third TDD configuration; starting, when the HARQ RTT timer expires and decoding of the downlink data is failed, a retransmission timer; and while the retransmission timer is positive, monitoring physical downlink control channel, PDCCH, subframes transmitted by the base station , based on the information for the third TDD configuration for a predetermined period to receive retransmitted data, wherein the predetermined period is determined by the retransmission timer, and wherein the retransmission timer is decreased by one whenever a downlink subframe of the first TDD configuration is lapsed. receiving, from a base station , a system information block type 1, SIB 1, including first time division duplex, TDD, configuration information; determining a TDD configuration for the terminal based on the first TDD configuration information included in the SIB 1; receiving, from the base station , a dedicated radio resource control, RRC, reconfiguration message including second TDD configuration information for identifying a reference k for dynamic TDD configuration, wherein the reference k for the dynamic TDD configuration is an interval between a transmission of downlink data and a transmission of a feedback corresponding to the downlink data; determining , when the RRC message including the second TDD configuration information is received, an HARQ round trip time, RTT, timer equal to the reference k for the dynamic TDD configuration plus four; receiving, from the base station , an enhanced interference mitigation and traffic adaptation, eIMTA, L1 signal message including information for a third TDD configuration; starting, when the HARQ RTT timer expires and decoding of the downlink data is failed, a retransmission timer; and while the retransmission timer is positive, monitoring physical downlink control channel, PDCCH, subframes transmitted by the base station , based on the information for the third TDD configuration for a predetermined period to receive retransmitted data, wherein the predetermined period is determined by the retransmission timer, and wherein the retransmission timer is decreased by one whenever a downlink subframe of the first TDD configuration is lapsed. <EOS>