CAR:
Context
Assisted Routing for Vehicular Ad hoc
Networks
Due to the
very high rate of topological changes and
frequent network partitions, routing in VANETs is a formidable
challenge. Previous studies in ad hoc
networks mainly
deal with networks in which the topology changes are very slow.
However, the high mobility aspects of the
nodes as in the case for VANETs are not well studied.
Furthermore, there have previously been few
studies on how the specific movement patterns of vehicles may influence
the
protocol performance and applicability. In
this project, we propose a Context Assisted Routing
(CAR) protocol,
which takes into account various domain specific contexts while routing
packets. A source node exploits global
context information such as road topology, traffic information, and
roadside
access points, to compute the forwarding trajectory, which efficiently
bypasses
the topology holes. The intermediate
nodes utilize local context information, such as locations, velocities
and
driving directions of neighboring vehicles to greedily forward the
packets to
nodes that lie on the trajectory. Simulation
results show that the proposed CAR protocol
outperforms the
traditional geographic forwarding in terms of packet delivery ratio and
average
delivery delay.
Publications
- V.
Dumitrescu, J. Guo,
W. Xiang, “CAR: Context Assisted Routing for Vehicular Ad hoc
Networks,” IEEE Transaction on Intelligent
Transportation Systems. In submission
- V.
Dumitrescu and J. Guo, “Context
Assisted Routing Protocols for Inter-Vehicle Wireless Communication,”
Proceedings
of the 2005 IEEE Intelligent Vehicles Symposium (IV’05), Las
Vegas, Nevada,
June 2005, pp. 594-600. [pdf]
- J.
Guo and
N. Balon, “Vehicular
Ad Hoc Networks
and Dedicated Short-Range communication,” Handbook
on Mobile Ad
Hoc and Pervasive Communications, L. T. Yang and M. Denko (Eds),
American
Scientific Publishers. To Appear.
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