Migration-Friendly Design for Ambient Networks

There is a danger that new networks and systems will never be realised as it may prove too difficult to migrate firom current networks to the new design. Designs for networks beyond 3G must take migration into account from the outset. IP QoS is an example of a network feature that has proved difficult to introduce into existing networks. This paper considers what can be done during the design of a new network to facilitate migration, presenting key principles that we believe a migration-friendly design should follow. We demonstrate how these principles are being used within the Ambient Networks project in three areas: composition, network management, and overlays/interworking.