A method for operation of an eNB in a wireless communication system, comprising: mapping (S2201), by the eNB, first downlink data into a physical downlink shared channel, PDSCH, based on a first radio frame structure which is based on a first transmission time interval, TTI; mapping (S2202), by the eNB, second downlink data to a short PDSCH, sPDSCH, based on a second radio frame structure which is based on a second TTI; and transmitting (S2203), by the eNB, the first and the second downlink data, wherein the first radio frame structure is a structure including the PDSCH and a physical downlink control channel, PDCCH, wherein the PDCCH schedules both the PDSCH and the sPDSCH, wherein the PDCCH includes an indicator indicating whether the second downlink data is transmitted through the PDSCH or the second downlink data is transmitted through the sPDSCH, wherein the first TTI relates to a time at which the first subframe is transmitted, wherein the second radio frame structure is a structure including at least one of the sPDSCH and/or a short PDCCH, sPDCCH, wherein the sPDCCH is allocated by a Control Channel Element, CCE, which is a smaller size than a CCE of the PDCCH, wherein the sPDSCH is allocated by a Resource Block, RB, which is smaller size than a RB of the PDSCH, wherein the second TTI relates to a time at which the second subframe is transmitted, wherein the second radio frame structure comprises a smaller number of symbols than the first radio frame structure, wherein the first radio frame structure and the second radio frame structure are respectively set for a latency requirement based on a plurality of services, and wherein the PDSCH and the sPDSCH are simultaneously allocated to a same UE. mapping (S2201), by the eNB, first downlink data into a physical downlink shared channel, PDSCH, based on a first radio frame structure which is based on a first transmission time interval, TTI; mapping (S2202), by the eNB, second downlink data to a short PDSCH, sPDSCH, based on a second radio frame structure which is based on a second TTI; and transmitting (S2203), by the eNB, the first and the second downlink data, wherein the first radio frame structure is a structure including the PDSCH and a physical downlink control channel, PDCCH, wherein the PDCCH schedules both the PDSCH and the sPDSCH, wherein the PDCCH includes an indicator indicating whether the second downlink data is transmitted through the PDSCH or the second downlink data is transmitted through the sPDSCH, wherein the first TTI relates to a time at which the first subframe is transmitted, wherein the second radio frame structure is a structure including at least one of the sPDSCH and/or a short PDCCH, sPDCCH, wherein the sPDCCH is allocated by a Control Channel Element, CCE, which is a smaller size than a CCE of the PDCCH, wherein the sPDSCH is allocated by a Resource Block, RB, which is smaller size than a RB of the PDSCH, wherein the second TTI relates to a time at which the second subframe is transmitted, wherein the second radio frame structure comprises a smaller number of symbols than the first radio frame structure, wherein the first radio frame structure and the second radio frame structure are respectively set for a latency requirement based on a plurality of services, and wherein the PDSCH and the sPDSCH are simultaneously allocated to a same UE. <EOS>