The present invention relates to a method for newly defining a synchronization signal to be used in an ultrahigh frequency band and acquiring downlink synchronization by using the synchronization signal, and a device for supporting the same. A method by which an eNode B (eNB) transmits a synchronization signal for compensating for a carrier frequency offset in a wireless access system supporting an ultrahigh frequency band, according to one embodiment of the present invention, can comprise the steps of: generating a first repetitive synchronization signal having a first repetitive characteristic; generating a second repetitive synchronization signal having a second repetitive characteristic; and transmitting the first repetitive synchronization signal and the second repetitive synchronization signal in the same subframe.