Effect of Transmission Parameters on Efficiency and Reliability of V2V Networks

Vehicle-to-vehicle communications is essential to create cooperative awareness amongst vehicles, improve roadway safety and roadway capacity, and reduce green house gas emissions. As vehicle density increases, the amount of cooperative awareness messages also increases, which in turn increases the amount of background interference in the wireless channel. Transmission under high degree of background interference reduces the reliability of the packet. Adjusting transmission parameters such as transmission power or backoff mechanism may reduce interference, but they also decrease efficiency of packet transmission. This paper quantifies the tradeoff between transmission efficiency and reliability, and shows how various transmission parameters affect overall system performance under different vehicle densities. ITS World Congress 2010 This work may not be copied or reproduced in whole or in part for any commercial purpose. Permission to copy in whole or in part without payment of fee is granted for nonprofit educational and research purposes provided that all such whole or partial copies include the following: a notice that such copying is by permission of Mitsubishi Electric Research Laboratories, Inc.; an acknowledgment of the authors and individual contributions to the work; and all applicable portions of the copyright notice. Copying, reproduction, or republishing for any other purpose shall require a license with payment of fee to Mitsubishi Electric Research Laboratories, Inc. All rights reserved. Copyright c ©Mitsubishi Electric Research Laboratories, Inc., 2010 201 Broadway, Cambridge, Massachusetts 02139