Designing a Novel Mobility Management Scheme for Enhancing the Binding Update of HMIPv6 with NEMO Environment

Recently, the network mobility (NEMO) is increasing in a hot topic. Most part of the traditional NEMO schemes has been designed based upon the NBS (NEMO Basic Support Protocol) in RFC 3963 or the route optimization-hierarchical mobile IPv6 with NEMO (RO-HMIPv6) in a Draft. However, the NBS and RO-HMIPv6 suffer from a significant number of signaling messages in related to a series triangle routing and binding update problems, respectively. Therefore, we propose a novel mobility management scheme for L3 (layer 3) 802.20 NEMO environment, called vehicle-based HMIPv6 (V-HMIPv6), to eliminate these drawbacks in this paper. For supporting V-HMIPv6 operation, a specific binding cache (SBC) also needs to be designed. Our scheme takes the advantages of NBS and RO-HMIPv6 that not only with a route optimization but also reduces the signal overhead of binding update generated at the same time by using our proposed SBC. Simulation study has demonstrated that a better performance can be achieved by V-HMIPv6 over the traditional NEMO protocols.