Fast Handover For Proxy Mobile IPv6 Research Articles

Efficient handover with optimized localized routing for Proxy Mobile IPv6

Proxy Mobile IPv6 (PMIPv6) has been designed by the IETF as a network-based mobility management protocol to support the localized mobility of IP devices. Although several proposals have been made for localized routing optimization, they don't take into account handover management and localized routing simultaneously. In fact, the localized routing state is restored after the handover management procedure, leading to packet loss and signaling overhead. On the other hand, Fast Handovers for PMIPv6 (F-PMIPv6) protocol has been designed to mainly solve the issues of the high handover delay and packet loss during handover that occur with PMIPv6. As a result, this paper looks at enhancing F-PMIPv6 by controlling the handover management with optimized localized routing and proposes an extension of PMIPv6 called optimized PMIPv6. The proposed protocol enhances the performance of PMIPv6 and F-PMIPv6 in terms of route optimization, handover delay, signaling cost and network utilization.

Performance analysis of fast handover for proxy Mobile IPv6

In Proxy Mobile IPv6 (PMIPv6), any involvement by the Mobile Node (MN) is not required, so that any tunneling overhead can be removed from over-the-air. However, during the PMIPv6 handover process, there still exists a period when the MN is unable to send or receive packets because of PMIPv6 protocol operations, suffering from handover latency and data loss. Thus, to reduce the handover latency and data loss in PMIPv6, Fast Handover for PMIPv6 (PFMIPv6) is being standardized in the IETF. Nevertheless, PFMIPv6 has a few weaknesses: (1) handover initiation can be false, resulting in the PFMIPv6 handover process done so far becoming unnecessary. (2) Extra signaling is introduced in setting up an IP-in-IP tunnel between the serving and the new Mobile Access Gateways (MAGs). Therefore, in this paper, we present our study on the protocol overhead and performance aspects of PFMIPv6 in comparison with PMIPv6. We quantify the signaling overhead and the enhanced handover latency and data loss by conducting a thorough analysis of the performance aspects. The analysis is very meaningful to obtain important insights on how PFMIPv6 improves the handover performance over PMIPv6, especially in a highway vehicular traffic scenario where Base Stations (BSs)/Access Points (APs) can be placed in one dimensional space and MN’s movements are quasi one-dimensional, so that the degree of certainty for an anticipated handover is increased. Further, our analytical study is verified by simulation results.