ProSEV: Proxy-Based Secure and Efficient Vehicular Communication

Vehicular Ad hoc Network (VANET) is a very promising approach that aims to improve vehicle and road safety, traffic efficiency, as well as comfortability to both drivers and passengers. Different types of applications were implemented to achieve these goals. Some of these applications require the exchanging of multiple and ordered messages as well as the existence of a stable Internet connection. However, the high node mobility of VANET seems to be one of the main stumbling blocks for adopting such applications. In this paper, we have investigated through a real experiment, how the VANET mobility imposes challenges in establishing and maintaining a long-lasting connection. In addition, we have proposed a mechanism to improve the communication efficiency over VANETs. Our solution is based on the concept of intelligent proxies that can be sent from, say, one Roadside Unit to a vehicle so that the negotiation between them can be delegated to the proxy and take place locally. Using the proxy will reduce the number of exchanged network messages among vehicles and infrastructure, overcome the intermittent and short-lived connectivity challenge of the high mobility vehicular network and, consequently, increase the communication efficacy. Also, we have presented a framework that allows such proxies to operate safely and securely.