International Journal of Advanced Research in Computer Science and Software Engineering (IJARCSSE)
Next Generation Network (NGN) is a generic term that describes the evolution and migration of fixed and mobile network infrastructures from distinct, proprietary networks to converged networks based on IP. It is envisioned to be an interworking environment of heterogeneous networks of wired and wireless access networks, PSTN, satellites, broadcasting, etc. This multilayer structure of transport networks presents a key challenge in network resource management which is a wide subject that has been studied extensively. The operations and management of such interconnected networks and complex service-oriented architectures are the key issues in effective management. They are expected to be much more difficult and important than the traditional network environment.