Method for transmitting and receiving data in a wireless communication system and apparatus therefor

A method of transmitting data by a base station in a wireless communication system, the method comprising:

• transmitting, to a user terminal, configuration information related to a physical resource block (PRB) bundling size of a downlink shared channel, wherein the configuration information comprises (i) a first bundling size set consisting of one value among a plurality of candidate values, and (ii) a second bundling size set consisting of two values among the plurality of candidate values;
• transmitting, to the user terminal, downlink control information comprising
• a bundling size indicator;
• and
• transmitting downlink data to the user terminal equipment through the downlink shared channel configured based on the PRB bundling size,
• wherein the bundling size indicator having a first indicator value indicates that the PRB bundling size is the one value in the first bundling size set, and
• wherein the bundling size indicator having a second indicator value indicates that the PRB bundling size is one of the two values in the second bundling size set, based on whether a size of contiguous scheduled PRBs in a frequency domain exceeds a threshold that is related to a size of a bandwidth part (BWP) for the user terminal.

A user terminal configured to receive data in a wireless communication system, the user terminal comprising:

• a radio frequency (RF) module;
• at least one processor;
• and
• at least one computer memory operably connectable to the at least one processor and storing instructions that, when executed, cause the at least one processor to perform operations comprising:
• receiving, from a base station, configuration information related to a physical resource block (PRB) bundling size of a downlink shared channel, wherein the configuration information comprises (i) a first bundling size set consisting of one value among a plurality of candidate values, and (ii) a second bundling size set consisting of two values among the plurality of candidate values;
• receiving, from the base station, downlink control information comprising
• a bundling size indicator;
• based on the bundling size indicator having a first indicator value, determining the PRB bundling size as the one value in the first bundling size set;
• based on the bundling size indicator having a second indicator value, determining the PRB bundling size as one of the two values in the second bundling size set, based on whether a size of contiguous scheduled PRBs in a frequency domain exceeds a threshold that is related to a size of a bandwidth part (BWP) for the user terminal;
• and
• receiving downlink data from the base station through the downlink shared channel configured based on the PRB bundling size.