TECHNIQUE FOR COORDINATING CS AND PS REGISTRATIONS IN A MULTI-OPERATOR CORE NETWORK

摘要

A technique for coordinating the registration of a terminal (UE) in circuit-switched (CS) and packet-switched (PS) domains of a multi-operator core network (MOCN) with multiple core networks (CN) is described (i.e. a requirement for coordinated CS and PS registrations for a User Equipment means that the UE is to be registered in the CS and PS domains of one and the same CN of the MOCN) . According to a method approach, a notification message indicating the necessity of coordinated CS and PS registrations for a terminal (UE) is received from a first core network (CN) . In a next step, and based on a global permanent identity (IMSI) associated with the terminal (UE) , a second core network (CN) responsible for CS and PS registrations is determined. A registration message for coordinated CS and PS registrations is then sent to the second core network (CN) that has been determined based on the global permanent identity (IMSI) .