The present specification provides a method for transmitting guard symbol information, which is performed by a node in a wireless communication system, the method comprising: determining the guard symbol information, the guard symbol information indicating the number of guard symbols, desired by the node, associated with switching between a mobile terminal (MT) operation and a distributed unit (DU) operation; and transmitting the guard symbol information to a parent node, the guard symbol being a symbol not used on the basis of a transition between the MT operation and the DU operation.