Secure Route Optimization Scheme for Network Mobility Support in Heterogeneous Mobile Networks

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With the proliferation of various wireless services such as Third Generation, Fourth Generation, Wireless Local Area Network, and Personal Area Network, etc., users request for access to the Next Generation Internet in more heterogeneous networks. The network mobility working group within the Internet Engineering Task Force introduced the Network Mobility (NEMO) concept as a network mobility basic support protocol (i.e., network moves as a unit) extended from Mobile IPv6 (MIPv6). However, this solution has the limitation of route optimization that should be always passed by Home Agents (HAs) using a bi-directional tunnel with its Mobile Router (MR). It is not also entirely supported a security requirements and various attacks (e.g., Denial of Service attack, redirect attack, etc.). Most of all, it is not mentioned how authentication issues between a HA and a Correspondent Node (CN) are solved in NEMO environments. To ameliorate these problems, we propose novel authenticated route optimization scheme to be performed by MR and CN of Mobile Network Nodes, which uses IDentity-based cryptosystem (that is, a Multi-Private Key Generator Based Authenticated Key Agreement between MRs) to look upon heterogeneous NEMO environments. In performance analysis, we analytically compute the protocol's connectivity recovery and end-to-end delay time and then compare the security and the efficiency of proposed scheme with the NEMO Basic support protocol, i.e., RFC 3963.