A method by which a terminal receives a downlink signal in a wireless access system is disclosed. The method comprises the steps of: receiving information on a plurality of channel status information (CSI) processes including two or more CSI-reference signals (CSI-RSs); receiving a downlink control signal including an indicator indicating a specific CSI-RS; selecting a quasi co-located (QCL) CSI process in which the specific CSI-RS is configured as a representative CSI-RS from among the plurality of CSI processes; selecting, as a QCL CSI-RS or a demodulation reference signal (DM-RS), a CSI-RS corresponding to the most recently reported CSI-RS indicator from among the two or more CSI-RSs included in the QCL CSI process; and receiving a downlink data signal by using the DM-RS and the QCL CSI-RS.