Migration from Traditional Networks to Converged Next Generation Networks Architecture with Guaranteed Quality of Service

The development of more powerful communication systems, such as NGN networks, will soon make traditional communication systems obsolete. Instead of wasting these expensive and functional resources, it is more economical to explore ways of transforming them into sophisticated NGN-compatible architectures. This can be achieved through a suitably designed migration process from vertical networks with separate services to horizontal multiservice converged networks. However, different operators have different needs and objectives when undertaking this all-important migration process. In this work, we propose a migration strategy, which takes several factors into consideration. In particular, the proposed migration strategy aims for assisting established operators to capitalize on their existing resources and migrate smoothly towards converged NGN architecture. Most importantly, the desired upgrade is achieved while satisfying requirements in terms of QoS guarantees.