Method for sending and receiving sms-related signals in wireless communication system and apparatus therefor

Abstract

An embodiment of the present invention relates to a method for sending and receiving short message service (SMS)-related signals of unified data management (UDM) in a wireless communication system, the method comprising: a step in which the UDM receives, from an SMS gateway MSC (SMS-GMSC), a message requesting routing information on an SMS to a UE; a step in which the UDM confirms whether a public land mobile network (PLMN) of an SMS function (SMSF) is same as the PLMN of an SMS serving node; a step in which the UDM sends, to the SMSF, a reachability confirmation request message about an SMS serving node of which the PLMN is not same as the PLMN of the SMSF; a step in which the UDM receives, from the SMSF, a response to the reachability confirmation request message; a step in which the UDM sends the routing information to the SMSF on the basis of a result of the confirmation and the response to the reachability confirmation request message; and a step in which the UDM sends, to the SMS-GMSC, a response message to the message requesting the routing information.

Dependencies are inferred from the claim text.