A method for a hybrid automatic repeat request, HARQ, procedure by a terminal (135, 330, 703, 704, 901) in a wireless communication system, the method comprising: receiving, from a base station (105, 110, 115, 120, 309, 902), a system information block type 1, SIB 1, including first time division duplex, TDD, configuration information; determining a TDD configuration for the terminal (135, 330, 703, 704, 901) based on the first TDD configuration information included in the SIB 1; receiving, from the base station (105, 110, 115, 120, 309, 902), 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 (105, 110, 115, 120, 309, 902), 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 (105, 110, 115, 120, 309, 902), 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 (105, 110, 115, 120, 309, 902), a system information block type 1, SIB 1, including first time division duplex, TDD, configuration information; determining a TDD configuration for the terminal (135, 330, 703, 704, 901) based on the first TDD configuration information included in the SIB 1; receiving, from the base station (105, 110, 115, 120, 309, 902), 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 (105, 110, 115, 120, 309, 902), 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 (105, 110, 115, 120, 309, 902), 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.