Provided is an operation method carried out by user equipment in a wireless communication system. The method comprises: receiving from a serving cell, common configuration information including at least one common configuration; the user equipment determining the validity of the common configuration with respect to a different cell; and operating by applying valid common configuration to the different cell, when the common configuration valid for the different cell exists from among the at least one common configuration. The common configuration includes configuration information commonly applied to at least one different cell within coverage of the serving cell.