Method for transmitting and receiving data in wireless communication system and device for same

A user equipment (UE) configured to transmit and receive data in a wireless communication system supporting a short transmission time interval (TTI), the UE comprising:

• a transceiver;
• and
• at least one processor functionally connected to the transceiver,
• wherein the at least one processor is configured to control the UE to:
• receive, through (i) a physical downlink control channel (PDCCH) depending on a radio frame structure based on a first TTI and (ii) a short PDCCH (sPDCCH) based on a second TTI, downlink control information related to the second TTI,
• wherein the number of symbols corresponding to the second TTI is smaller than the number of symbols corresponding to the first TTI, and
• wherein (i) a first part of the downlink control information related to the second TTI is received through the PDCCH, and (ii) a second part of the downlink control information related to the second TTI is received through the sPDCCH, and
• receive downlink data related to the second TTI through a short physical downlink shared channel (sPDSCH) depending on the radio frame structure based on the second TTI by using the downlink control information,
• wherein the sPDCCH includes a control channel element corresponding to one or more resource element groups, and
• wherein the number of one or more resource element groups is configured according to the number of symbols corresponding to the second TTI.