Table of Contents
International Journal of Vehicular Technology
Volume 2011, Article ID 718048, 10 pages
Research Article

A Joint Vehicle-Vehicle/Vehicle-Roadside Communication Protocol for Highway Traffic Safety

Advanced Network Technologies Division, National Institute of Standards and Technology, 100 Bureau Drive, Stop 8920, Gaithersburg, MD 20899-8920, USA

Received 13 October 2010; Revised 8 February 2011; Accepted 24 February 2011

Academic Editor: Martin Reisslein

Copyright © 2011 Bin Hu and Hamid Gharavi. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


A joint vehicle-vehicle/vehicle-roadside communication protocol is proposed for cooperative collision avoiding in Vehicular Ad Hoc Networks (VANETs). In this protocol, emergency warning messages are simultaneously transmitted via Vehicle-to-Vehicle (V2V) and Vehicle-to-Roadside (V2R) communications in order to achieve multipath diversity routing. In addition, to further improve communication reliability and achieve low latency, a Multi-Channel (MC) technique based on two nonoverlapping channels for Vehicle-Vehicle (V2V) and V2R (or R2V) is proposed. The simulation results demonstrate that the proposed joint V2V/V2R (R2V) communication protocol is capable of improving the message delivery ratio and obtaining low latency, which are very important merits for highway traffic safety.