Mobility Models in Opportunistic Networks
Kyunghan Lee, Pan Hui, Song Chong · 2013
Human mobility is critically important in many academic disciplines ranging from communication networking research to epidemiology and urban planning. This chapter introduces the recent measurement studies on human mobility and representative realistic mobility models inspired by the measurements in two major categories: contact-based and trajectory-based. Based on the key observations of human mobility, it then discusses new paradigms in designing network protocols, especially forwarding protocols in delay-tolerant networks, and network architectures providing fundamental tradeoffs between delay and diverse network resources. In an opportunistic network, mobility determines the communication opportunities when access infrastructure is not available. The chapter concentrates on (a) several peer-contact-based human mobility experiments conducted by the Haggle project using iMotes and (b) the analysis of the human mobility patterns from these traces. It shows several cases of tradeoffs and verify that they are worthwhile to be considered in designing novel network protocols. Controlled Vocabulary Terms mobility management (mobile radio); wireless networks