A method of receiving a data by a communication device in a wireless communication system, the method comprising: receiving, from a base station, BS, higher layer signaling for a first scheduling information including candidate scheduling information corresponding to each of control channel resources; receiving, from the BS, a physical downlink control channel, PDCCH, including second scheduling information in one control channel resource of the control channel resources of a subframe #n; and receiving, from the BS, a physical downlink shared channel, PDSCH, in a subframe #(n+X), by combining the candidate scheduling information corresponding to the one control channel resource and the second scheduling information, wherein the candidate scheduling information corresponding to the one control channel resource and the second scheduling information include different scheduling information for reception of the PDSCH, wherein an index of a starting resource block in which the PDSCH is received and a demodulation reference signal cyclic shift, DMRS CS, are determined by the candidate scheduling information corresponding to the one control channel resource, and wherein a number of resource blocks in which the PDSCH is received, an index of a modulation and coding scheme, MCS, related to the PDSCH and a hybrid automatic repeat request, HARQ, process identifier, ID, a new data indicator, NDI, a redundancy version, RV, transmit power control, TPC, and cyclic redundancy check, CRC, are determined by the second scheduling information, and wherein the n is an integer equal to or greater than 0 and the X is obtained based on the candidate scheduling information corresponding to the one control channel resource. receiving, from a base station, BS, higher layer signaling for a first scheduling information including candidate scheduling information corresponding to each of control channel resources; receiving, from the BS, a physical downlink control channel, PDCCH, including second scheduling information in one control channel resource of the control channel resources of a subframe #n; and receiving, from the BS, a physical downlink shared channel, PDSCH, in a subframe #(n+X), by combining the candidate scheduling information corresponding to the one control channel resource and the second scheduling information, wherein the candidate scheduling information corresponding to the one control channel resource and the second scheduling information include different scheduling information for reception of the PDSCH, wherein an index of a starting resource block in which the PDSCH is received and a demodulation reference signal cyclic shift, DMRS CS, are determined by the candidate scheduling information corresponding to the one control channel resource, and wherein a number of resource blocks in which the PDSCH is received, an index of a modulation and coding scheme, MCS, related to the PDSCH and a hybrid automatic repeat request, HARQ, process identifier, ID, a new data indicator, NDI, a redundancy version, RV, transmit power control, TPC, and cyclic redundancy check, CRC, are determined by the second scheduling information, and wherein the n is an integer equal to or greater than 0 and the X is obtained based on the candidate scheduling information corresponding to the one control channel resource.