Two fast handover solutions for the IMS handover in the presence of mobile IPv6 by using context transfer procedures

The growing demand for wireless and mobile services has set the recent research sights on mobility support for next generation IPv6 networks. To provide seamless communications for such networks, Fast Mobile IPv6 (FMIPv6) and Hierarchical Mobile IPv6 (HMIPv6) has been proposed. Moreover, 3GPP has introduced IP multimedia subsystem (IMS) as the next generation IP based infrastructure for multimedia services convergence. In this paper we present two context transfer mechanisms based on predictive and reactive schemes, to support seamless handover in IMS over MIPv6. Transferring appropriate session information between old P-CSCF and new P-CSCF, those schemes reduce handover latency time. The performances of the proposed mechanisms are evaluated by simulations.