Service architecture support of personal mobility in a multi-domain environment

The paper introduces some proposals for the support of personal mobility services in the TINA environment. In particular, the reasons for maintaining terminal information inside the network and the need to support services across different provider domains by handling them through multiple user agents are presented. The effectiveness of user agent replication is analysed by comparing the signalling load generated on the network in the hypotheses of: i) accessing remote user data associated with a single user agent; and ii) transferring these data to the visited domain where the user is actually accessing the service.