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Abstract—Using data of passenger numbers and train schedules from the London Underground metropolitan railway system, we compare a Tunnelling-based to a Naming-based approach for supporting mobile networks. We show that, in terms of packet overhead, a naming based approach may have similar performance overhead to a tunnelling approach, and so may offer a viable alternative, whilst also offering other benefits. I.

The Host Identity Indirection Infrastructure (Hi³) is a networking architecture for mobile hosts, derived from the Internet Indirection Infrastructure (i³) and the Host Identity Protocol (HIP). Hi³3 has efficient support for secure mobility and multihoming, which both are crucial for future Internet applications. In this paper, we describe and analyze Hi³ in detail. Compared to Mobile IP, Hi³ achieves better resilience, scalability and security. Considering all capabilities Hi³ provides, its implementation is much simpler than a corresponding implementation based on existing or proposed IETF standards. Both our analysis and early measurements support the notion that Hi³ performance is on the same level with Mobile IP.

To my wonderful parents and my beloved family. ACKNOWLEDGEMENTS Completing this Ph.D. has been an exciting long journey, and it would not have been possible without the help and encouragement of many people. First and foremost, I would like to thank my advisor Professor Henry L. Owen for his continuous support and guidance throughout my studies. Professor Owen has been an awesome mentor-he truly enjoys advising. I admire his passion in teaching and conducting research. I really appreciate that he has given me a lot of freedom in my research. It has been my privilege and honor to be associated with Professor Owen and I will be forever grateful for his constant encouragement and wisdom. I would also like to thank the members of my committee, Professor John A. Copeland, Dr. Randal T. Abler, Professor Mustaque Ahamad, and Professor Yorai Wardi, for serving on my proposal and dissertation committees. Furthermore, I have benefited immensely from my interactions with Joachim Sokol, Hans-Peter Huth, and Joachim Grimminger at Siemens AG, in Munich. My thesis topic and several ideas contained in this thesis are the outcomes of our interac-tions with Siemens on the TATI project. I am very grateful to the Siemens AG team for supporting and funding this research as well. I will always appreciate the friendship of my past and present officemates and