In a method for signal transmission and reception of a home subscriber server (HSS) in a wireless communication system, according to an embodiment of the present invention, the method for signal transmission and reception of the HSS comprises the steps of: receiving a uniform resource locator (URL) from a mobility management entity (MME) which has received an attach request transmitted by a user equipment (UE); and determining whether it is appropriate for the MME to provide service to the UE on the basis of the URL, wherein the URL includes at least one piece of information on whether the MME belongs to a dedicated core network, or on the type of dedicated core network to which the MME belongs if the MME belongs to a dedicated core network.