An Approach for Optimal Hierarchical Mobility, Management Network Architecture

The focus of this paper is to get the optimal hierarchical mobility management solution for next generation wireless IP-based networks. Hierarchical architectures prove advantageous in minimizing signaling overhead by limiting registration signaling locally. Our ultimate goal is to find the optimum hierarchy level, which should provide best performance in terms of networks parameters like signaling overhead, handoff latency and frequency of location updates. For this purpose an n-tiered architecture has been considered and optimality test on the number of tiers has been performed through analytical and ns-2 based simulation results. From the performance evaluation it is seen that time-bandwidth product is minimum for three-tiered network architecture leading as the optimal solution