Development of Test Bed to Evaluate the Performance of Intelligent Transportation Systems

Alyusuf, Barra, Rami Sabouni, Utayba Mohammad, and Nizar Al-Holou

In the recent decades, the revolution of the wireless technology has invaded all fields of life, and the automotive industry has gotten a fair share of it through the Intelligent Transportation Systems (ITS). The ITS uses the concept of Inter-Vehicle Communication (IVC) to disseminate safety messaging, share some infotainment data, and manage traffic flow on highways and metropolitan roads. However, there have been many challenges for the ITS system including: the infrastructureless network architecture, Doppler shift, network connectivity and multi-hopping communication requirements …etc. Recently, the wireless networks researchers have been evaluating different technologies to accommodate the needs of the ITS system, and as a result, the Dedicated Short Range Communication (DSRC) as an enhanced protocol for Vehicular Ad hoc NETwork (VANET) communications has been drafted. Still, there is a demanding need to test the draft protocol and evaluate its performance, along with some other standard protocols, before it is actually deployed in the transportation system. This research develops a generic test bed that can be used to evaluate and analyze the performance of the DSRC protocols and any IEEE802.11 based protocol. The test bed will deploy low-cost WiFi nodes to emulate multiple vehicles contending for the medium, and hence, evaluate the associated packet delay and channel throughput degradation. Moreover, the test bed will enable testing different protocols in a realistic way by deploying these protocols at two communicating devices and performing the many-node contention scenarios in a mirror WiFi based network. As a result, we will be able to evaluate the different emerging wireless protocols for the ITS system at a very low cost.

ACKNOWLEDGMENTS

This work was funded by the MIOH University Transportation Center (UTC), Michigan Department of Transportation (MDOT), and CAR.