A method of receiving a downlink signal by a user equipment in a wireless communication system is discussed. The method includes receiving a plurality of scheduling information, each scheduling information being associated with a respective data in a same time unit, and receiving at least one of a plurality of the respective data based on whether sizes of the first and second data are under a processing capability of the user equipment, wherein the processing capability of the user equipment includes two maximum data sizes, and a first maximum data size T1 is smaller than a second maximum data size T2.