Connectivity Aware Routing in Vehicular Ad Hoc Networks
Qing Yang
Ph.D Student Advisor: Dr. Lim
Computer Science and Software Engineering
Auburn University
Abstract
Besides the safety application, multi-hop car to car communication can also be
used to provide drivers with convenience ranging from office on the wheel to real traffic
query, parking space searching and on-road advertisement. Multi-hop communication in
vehicular ad hoc network (VANET) is challenge due to high dynamic topology and
frequent disconnection of networks, which makes traditional ad hoc routing protocols
unserviceable. In disconnected VANET, carry-and-forward mechanism was considered to
be an effective way to address the network partition. Our connectivity aware routing
(CAR) protocol aims at choosing an optimal routing path along which packets will face
the least probability of network disconnection. To achieve this, based on the statistical
data, a new model of networks’ connectivity was proposed which considers the clustering
phenomenon of moving vehicles affected by the traffic light. Results generated by the
simulation show that proposed CAR protocol outperforms existing solutions in terms of
data delivery ratio, data packet delay and network throughput. In addition, CAR is
suitable for not only the sparse but also the density network.
Bio
Qing Yang received the B.S. degree from NanKai University, Tianjin, P.R. China in 2003. And
he received the M.S degree in Computer Science and Technology from Harbin Institute of
Technology, Harbin, P.R. China in 2005.
Currently, he is an Ph.D student in the Computer Science of Software Engineering at Auburn
University, Auburn, AL. His research interest includes routing and security issues in wireless
vehicular ad hoc network (VANET), and the target tracking in sensor networks.