Real-time Communication in Vehicular Ad Hoc Networks (VANETs)

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ACKNOWLEDGEMENTS I wish to express my sincere gratitude to my supervisor Dr. Vinny Cahill for his comments and encouragements all through this research endeavour. Cheers to the many honours students with whom I have studied this year. We are still the same mirthful people as we were before we started and now I think we always will be. Finally I would like to thank my family for their support and understanding, to whom I owe so much. . IV
ABSTRACT Ad hoc networks in which no centralized static station or infrastructure is supported are gaining increasing popularity. Due to mobility, the topology of the networks changes continuously and wireless links break down and reorganize frequently. These features cause traditional real-time communication protocols to be inapplicable in a mobile setting. The increasing research of real-time communication in Mobile Ad Hoc Wireless Networks (MANETs) is to enable distributed applications among mobile nodes in infrastructure-free environments. Vehicular Ad Hoc Networks (VANETs) characterized by nodes with relatively high mobility and various disturbed environments represent a number of remarkable challenge dissimilar to MANETs. Applications of inter-vehicle and vehicle-to-roadside wireless communication that make use of VANETs require reliable communication that provides a guarantee of real-time message propagation. Nowadays, most of researches in VANETs domain concentrate on the development of layered communication protocols. In this dissertation, we analyze and compare relevant technologies in the fields of VANETs and Discrete Event Simulation (DES). Then, we utilize Java, a modern object-oriented language supporting multiple threads and providing GUI-style model development tools, to develop a vehicular traffic simulation. On top of the traffic simulation, we perform Time-Bounded Medium Access Control (TBMAC) protocol. In the end, we evaluate the performance of the simulation and discuss its merits and pitfalls. V
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Page 7 and 8: 3.4.1.1 Ns-2 . . . . . . . . . . .
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Page 11 and 12: LIST OF FIGURES Figure 2.1: Time Re
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Page 15 and 16: 1.3 Objective For this dissertation
Page 17 and 18: Chapter 2 Background In this chapte
Page 19 and 20: Figure 2.2 Backoff Process 2.2 MANE
Page 21 and 22: In VANETs scenarios there are three
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4.7.1.1 Clock synchronisation First
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When a vehicle is going to leave a
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4.8 Summary In this chapter we firs
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To avoid the confusion from the den
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5.3 Components 5.3.1 Roadway We app
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Through above steps, we can get a r
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5.3.3 Vehicle 5.3.3.1 Dynamic objec
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For a driving vehicle A, if there i
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Thread to implement the enter() met
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In the end, we join the above appro
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Chapter 6 Evaluation This Chapter i
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many classes were put in the packet
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6.3.1 Vehicular Mobility Model Rand
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6.3.5 Software Usability The TBMAC
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Chapter 7 Conclusion 7.1 Summary In
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7.3 Lessons Learned In this project
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[7] Y.-B. Ko and N. H. Vaidya, “G
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[19] M. Ergen, et al., “Wireless
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[36] J. Misra, “Distributed discr
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[51] “DSRC—Dedicated Short Rang
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Real-time Communication in Vehicular Ad Hoc Networks (VANETs)

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