Anonymous Home Binding Update Scheme for Mobile IPv6 Wireless Networking

Mobile IPv6 wireless networking is an integration of heterogeneous wireless networks that serves and supports different mobile nodes with seamless communications, in order to enhance the performance. However, the anonymity and location privacy are critical problems in seamless roaming environments. In this paper, we propose an anonymous home binding update scheme (AHBU) for mobile IPv6 networks to achieve both anonymity and location privacy for mobile nodes. In addition, we implement a mutual authentication mechanism and construct a shared secret key between the mobile node and the foreign gateway. Unlike existing anonymity and location privacy schemes, AHBU works efficiently in scalable, real-time, and highly mobile environments. Besides, it achieves reasonable degree of anonymity and high level of mobile node's location privacy. Compared to the mix-based scheme, our scheme has less computation overhead because it requires only two public key encryption operations.