A method performed by a wireless device in a wireless communication system, the method comprising: receiving, from a network, information for a point A which is a reference point of each resource block grid for a plurality of subcarrier spacings, wherein the plurality of subcarrier spacings comprises a first subcarrier spacing and a second subcarrier spacing, wherein the first subcarrier spacing is a largest subcarrier spacing supported by the network on a carrier, and the second subcarrier spacing is a subcarrier spacing difference from the first subcarrier spacing; receiving, from the network, information for a first offset which is an offset between the point A and a lowest subcarrier of the carrier for the first subcarrier spacing, and information for a number of resource blocks of the carrier for the first subcarrier spacing; receiving, from the network, information for a second offset which is an offset between the point A and a lowest subcarrier of the carrier for the second subcarrier spacing, and information for a number of resource blocks of the carrier for the second subcarrier spacing; calculating a first center frequency associated with the first subcarrier spacing based on the first offset and the number of resource blocks of the carrier for the first subcarrier spacing; calculating a second center frequency associated with the second subcarrier spacing based on the second offset and the number of resource blocks of the carrier for the second subcarrier spacing; calculating a center frequency difference which is a difference between the first center frequency and the second center frequency; generating a signal for the second subcarrier spacing based on the center frequency difference; and transmitting the generated signal to the network. receiving, from a network, information for a point A which is a reference point of each resource block grid for a plurality of subcarrier spacings, wherein the plurality of subcarrier spacings comprises a first subcarrier spacing and a second subcarrier spacing, wherein the first subcarrier spacing is a largest subcarrier spacing supported by the network on a carrier, and the second subcarrier spacing is a subcarrier spacing difference from the first subcarrier spacing; receiving, from the network, information for a first offset which is an offset between the point A and a lowest subcarrier of the carrier for the first subcarrier spacing, and information for a number of resource blocks of the carrier for the first subcarrier spacing; receiving, from the network, information for a second offset which is an offset between the point A and a lowest subcarrier of the carrier for the second subcarrier spacing, and information for a number of resource blocks of the carrier for the second subcarrier spacing; calculating a first center frequency associated with the first subcarrier spacing based on the first offset and the number of resource blocks of the carrier for the first subcarrier spacing; calculating a second center frequency associated with the second subcarrier spacing based on the second offset and the number of resource blocks of the carrier for the second subcarrier spacing; calculating a center frequency difference which is a difference between the first center frequency and the second center frequency; generating a signal for the second subcarrier spacing based on the center frequency difference; and transmitting the generated signal to the network. <EOS>