Method for transmitting and receiving data on basis of qcl in wireless communication system, and device therefor

A method of transmitting data based on a quasi-co location (QCL) in a wireless communication system, the method performed by a base station, the method comprising:

• transmitting transmission configuration indication (TCI) state information related to a QCL indication for at least one downlink reference signal (DL RS) to a user terminal (UE) via RRC signaling;
• transmitting a physical downlink control channel (PDCCH) including downlink control information (DCI) to the UE in a first slot;
• and
• transmitting, to the UE, a physical downlink shared channel (PDSCH) including the data based on one or more QCL indications, wherein
• among the QCL indications, a spatial QCL indication is a QCL indication included in the PDCCH transmitted in the first slot or a latest slot prior to the first slot, and
• among the QCL indications, at least one QCL indication except for the spatial QCL indication is a QCL indication included in the PDCCH transmitted in the first slot.

A UE for receiving data based on a quasi-co location (QCL) in a wireless communication system, the UE comprising:

• a radio frequency (RF) module for transmitting/receiving a radio signal;
• and
• a processor functionally connected with the RF module, wherein the processor is configured to:
• receive transmission configuration indication (TCI) state information related to a QCL indication for at least one downlink reference signal (DL RS) from a base station via RRC signaling;
• receive a physical downlink control channel (PDCCH) including downlink control information (DCI) from the base station in a first slot;
• and
• receive, from the base station, a physical downlink shared channel (PDSCH) including the data based on one or more QCL indications, wherein
• among the QCL indications, a spatial QCL indication is a QCL indication included in the PDCCH received in the first slot or a latest slot prior to the first slot, and
• among the QCL indications, at least one QCL indication except for the spatial QCL indication is a QCL indication included in the PDCCH received in the first slot.

A base station for transmitting data based on a quasi-co location (QCL) in a wireless communication system, the base station comprising:

• a radio frequency (RF) module for transmitting/receiving a radio signal;
• and
• a processor functionally connected with the RF module, wherein the processor is configured to:
• transmit transmission configuration indication (TCI) state information related to a QCL indication for at least one downlink reference signal (DL RS) to a UE via RRC signaling;
• transmit a physical downlink control channel (PDCCH) including downlink control information (DCI) to the UE in a first slot;
• and
• transmit, to the UE, a physical downlink shared channel (PDSCH) including the data based on one or more QCL indications, wherein
• among the QCL indications, a spatial QCL indication is a QCL indication included in the PDCCH transmitted in the first slot or a latest slot prior to the first slot, and
• among the QCL indications, at least one QCL indication except for the spatial QCL indication is a QCL indication included in the PDCCH transmitted in the first slot.