SECURE METHOD FOR SSO SUBSCRIBER ACCESSING SERVICE FROM OUTSIDE OF HOME NETWORK

摘要

When a UE (10) transits from a home MNO (20) to another network (visited network) (30), the visited network (30) or the UE (10) notifies the home MNO (20) of UE's location. The home MNO (20) validates the UE's authenticity and its location, and sends an assertion to the SP (40) via the visited network (30) or the UE (10). The SP (40) checks the validity of the assertion and starts providing service to the UE (10) via the visited network (30).