Fast handover schemes for future wireless IP networks: a proposal and analysis

In this paper, we describe three proposals to perform fast handover in IP-based hierarchical mobile networks for real time applications. Our protocols are designed to reestablish the communication session flow quickly and to minimize the service disruption delay that occurs during a mobile IP handover. Analytical study is carried out to evaluate the performance of the protocols and mobile IP (MIP). The simulation results display a comparative study of MIP and the proposed schemes in terms of the time taken to establish the new path toward the mobile host (MH) after it has crossed a cell boundary. Also shown are comparative simulation results of packets lost per handover and packet loss ratio during a voice session for both MIP and the first proposed handover.