Context aware pre-crash system for vehicular ad hoc networks using dynamic Bayesian model

.......................................................................................................................................... II Declaration .................................................................................................................................... IV Acknowledgments.......................................................................................................................... V List of Figures ............................................................................................................................... IX List of Tables ................................................................................................................................. X List of Abbreviation ..................................................................................................................... XII Chapter 1 Introduction .................................................................................................................. 1 1.1 Motivation ....................................................................................................................... 2 1.2 Thesis scope .................................................................................................................... 3 1.3 Research Questions ......................................................................................................... 4 1.4 Research Methodology ................................................................................................... 4 1.5 Measurable Outcomes ..................................................................................................... 5 1.6 Contributions................................................................................................................... 6 1.7 Thesis structure ............................................................................................................... 7 Chapter 2 Overview of VANET and Context-Aware Systems ................................................... 9 2.1 Ad-Hoc Networks ......................................................................................................... 10 2.2 Vehicular Ad Hoc Networks ......................................................................................... 10 2.2.1 VANET Architecture ................................................................................................... 11 2.2.2 Communication scenarios in VANET ......................................................................... 13 2.2.3 Wireless Access Technologies in VANET .................................................................. 14 2.2.4 VANET Characteristics ............................................................................................... 16 2.2.6 VANET Applications and Services ............................................................................. 17 2.3 Context Aware System (CAS) Overview ..................................................................... 22 2.3.1 Context Definitions ...................................................................................................... 22 2.3.2 Context Attributes ........................................................................................................ 25 2.3.3 Context Sensing ........................................................................................................... 25 2.3.4 Context Modelling and Reasoning ............................................................................... 26 2.3.5 Reasoning about Uncertain Contextual Information ................................................... 28