Roaming support method and systems in UMTS

Details Roaming support method and systems in UMTS Roaming support method and systems in UMTS

2011-04-12

2011-04-12

Won, Michael (Department: 2455)

Electrical computers and digital processing systems: multicomput

Computer-to-computer session/connection establishing

C709S203000, C709S218000, C709S220000, C709S237000, C709S238000, C709S249000, C455S432100, C370S328000

Reexamination Certificate

active

07925762

ABSTRACT:
The invention relates to a communication method and system wherein a network element of a roaming user is attachable to a visited first network and be served by a serving means of the home network. When the network element of the roaming user is registering or initiating a connection to a called network element of the visited network, a network element of the visited network, such as proxy means, either adds information on the called network element or on a service element of the visited network when sending a message to the home network. The message is preferably sent as a protocol message, in particular a message of the Session Initiation Protocol.

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