A Novel Mobility Management Scheme for NEMO Environment

Abstract

The frequent change of Mobile Node (MN) location is going to increase rapidly as everything is a mobile presently. In order to achieve seamless mobility, mobility management is considered as very important aspect. The mobile IPv6 (MIPv6) is proposed and standardized by Internet Engineering Task Force (IETF). It is introduced to improve the host mobility management. But, it faces different problems when mobile nodes move between different network infrastructures. To overcome these issues, Proxy Mobile IPv6 (PMIPv6) is introduced. However, PMIPv6 adds additional cost to the network by implementing mobile access gateway and bi-directional tunnel. Network mobility NEMO standardized as extension to MIPV6 to support reachability and session continuity to the Mobile Network Nodes (MNNs) as one unit while they move. But, still there are some issues inherited from MIPv6 such as packet loss and handover latency during the registration of MNNs and handoff of NEMO. This research proposes Binding Update No Sense Drop (BUNSD) Binding Cache Entry (BCE) in Local Mobility Anchor (LMA) schema. The BUNSD-LMA aims to find possible solution to allow MNNs that are roaming in a PMIPv6 domain to perform seamless mobility whiles maintaining their session continuity through mobile router. In this scheme, PMIPv6 is integrated with NEMO BS. In addition, the binding update message format is extended to register the prefix of MNNs in advance with short time. In this Thesis, BUNSD-LMA is evaluated using numerical analysis and simulation using Opnet simulator. The performance metrics considered are handover latency and total packet loss. The analytical result shows that the BUNSD-LMA had better performance in term of handover, and registrations time of MNNs. It showed that the BUNSD-LMA decreases the total packet lost with 38% compared to NEMO BSP.The simulation results provide us with some insight as to the characteristics of the considered NEMO BSP mechanisms. As a result the total packet loss is decreased and seamless mobility of MNNs enhancedin BUNSD-LMA compared to NEMO BS benchmark