A method by a UE for time-domain resource allocation in a wireless communication system supporting a 5G or 6G communication system includes: receiving, from a base station, configuration information including first information for configuration of a time domain resource allocation table, which is applicable to a downlink data channel, and second information indicating a minimum scheduling offset related to scheduling of the downlink data channel; receiving, from the base station, downlink control information including time domain resource allocation information about the downlink data channel and information indicating whether to configure the minimum scheduling offset; and in case that the minimum scheduling offset is configured, identifying a first slot offset for scheduling of the downlink data channel, based on the configuration information and the time domain resource allocation information; and receiving data on the downlink data channel scheduled based on the first slot offset.