METHOD AND SYSTEM FOR IMPROVING PLMN SELECTION BASED ON REQUIRED SERVICES/SLICES FOR ROAMING SUBSCRIBERS

摘要

The present disclosure relates to a pre-5^th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4^th-Generation (4G) communication system such as Long Term Evolution (LTE). The present disclosure relates to a method and system for steering of roaming (SoR) information based on required services for roaming subscribers. The method includes registering the UE in a visited public land mobile network (VPLMN) by an access and mobility management function (AMF) device. The method comprises requesting a unified data management (UDM) server of a home public land mobile network (HPLMN) to provide subscription data. The method further comprises requesting by the UDM server SoR information from an application function (AF) device, wherein the request includes information related to single - network slice selection assistance information (S-NSSAI) either requested or subscribed by the UE. The method comprises the steps of determining the SoR information to be provided to the UDM server and transmitting the SoR information to the UE. The subscribers can use the SoR information for latching onto a VPLMN that provides the service they are interested in.