Abstract
Ubiquitous computing (UbiComp) systems rely on heterogeneous technologies and diverse protocols to enable the Anywhere, Anything, Anytime paradigm. Besides networking, the typical definition of a UbiComp system includes also soft- ware components and user interaction. The design of a UbiComp system is not an easy task, as architectural choices need to be made regarding technologies, applications and protocols to be employed. In this chapter we present a methodological framework for evaluating the support of ubiquity in mobile computing systems and protocols. This framework can be employed in different network architectures to design and evaluate protocols for future mobile networks, without incurring the overhead of prototyping, simulation or ethnographic studies. We illustrate the importance of protocol selection in UbiComp systems by presenting a case that com- pares ubiquity support in Mobile IPv6 (MIPv6) and Host Identity Protocol (HIP) protocols. The case study shows that without recurring to experts in the field (e.g. UbiComp systems experts) we can demonstrate that HIP supports ubiquity better than MIPv6.
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