A Comparative Study of Existing Protocols Supporting Ip Mobility

In this paper, we have done a comparative study for a set of protocols supporting IP mobility, such as Mobile IP (MIP), Hierarchical Mobile IP (HMIP), Wireless IP, Cellular IP, HAWAII, TeleMIP and Dynamic Mobility Agent (DMA). These IP-based mobility protocols will play an important role in the convergence of IP and legacy wireless networks, within the context of the future 4G networks. TeleMIP and DMA as extensions of MIP are intradomain mobility management architectures for providing global reachability and reducing location updates. Cellular IP and HAWAII are micromobility protocols that also complement base MIP by offering fast and seamless handoff control in limited geographical areas, and IP paging support to minimize power consuption. It has been observed that IP mobility management schemes such as MIP (for interdomain mobility) and Cellular IP (for intradomain mobility) might be required for fast and seamless handoff as well as for real time traffic management. We highlight the advantages and disadvantages of these protocols in the context of the managing mobility, and compare their features against a number of key design issues for seamless IP-based mobility as envisioned for the future 4G networks.