Khaled Ibrahim's PhD Defense Slides Department of Computer Science Old Dominion University February 21, 2011 Note: You may need to download the file to see all of the animations.

1. PhD Defense Exam Data Aggregation and Dissemination in Vehicular Ad-Hoc Networks Khaled Ibrahim Advisor: Dr. Michele C. Weigle Computer Science Department Old Dominion University, Norfolk, VA 23529 February 21, 2011

10. Problem Definition How to securely and efficiently provide each VANET application with a customized version of the vehicular data based on its category.

11. CASCADE CASCADE Cluster-based Accurate Syntactic Compression of Aggregated Data in VANETs

13. CASCADE Local View Receiving Aggregated Frame Broadcasting Aggregated Frame Receiving Primary Frame Broadcasting Primary Frame Data Flow in CASCADE

15. CASCADE

16. Local View Component

22. Local View Component

24. Extended View Component

26. Extended View Component

35. Data Dissemination Component

42. Data Dissemination Because using p-IVG reduces the media contention, the reception rate increases

43. Data Dissemination p-IVG takes less time to send the messages further using smaller number of hops

46. Data Dissemination IVG Number of Extra Copies

47. Data Dissemination p-IVG Number of Extra Copies

50. Data Dissemination Component Sparse Traffic Clustered Traffic

56. Data Dissemination Component Extended View Length (km)

58. Data Dissemination Component

66. Questions

67. Thanks