Disclosed are a method whereby user equipment receives a data signal in a wireless communication system, and devices which support same. According to one embodiment applicable to the present disclosure, on the basis of (i) configuration information related to dynamic bundling for a precoding resource block (PRB) and (ii) control information for scheduling a first physical downlink shared channel (PDSCH), both pieces of information being received from a base station, user equipment can receive a data signal via the first PDSCH on the basis of an assumption related to the first PDSCH.