A comparative analysis of predictive and reactive mode of optimized PMIPv6

Proxy Mobile IPv6 (PMIPv6) has been developed by the IETF as a network-based mobility management protocol to support the mobility of IP devices. F-PMIPv6 and Localized Routing have been proposed to solve the issues of packet loss/handover delay and non-optimal routing of data packets respectively. Optimized PMIPv6 (O-PMIPv6), as proposed in [1], looked at combining all these features in one solution and was initially designed to work in predictive mode. However, when the mobile node moves very fast, the attachment with the target network may happen before the completion of the tunnel setup procedure between the previous and the new access network while using predictive mode. Moreover, the prediction of the attachment could fail for several reasons such as the lost of the detachment notification messages. All of these scenarios require support of reactive mode for O-PMIPv6. As a result, this paper extends the operation of O-PMIPv6 to the reactive mode. A comparative analysis is done with PMIPv6 and the reactive mode of F-PMIPv6 to study the effectiveness of the proposed extension in terms of route optimization handover delay, signaling cost and network utilization. Finally, the reactive O-PMIPv6 is compared to the predictive O-PMIPv6 to show differences in performance for both approaches.