Development of telematics communication system with WAVE DSRC

Vehicular wireless communication for emergent or critical informational event´s notification is more and more important although ITS and telematics´ services are not ready. DSRC (dedicated short range communication) equipment is under developed up to now, and WAVE (Wireless Access in Vehicular Environment) is one of the DSRC standards that is currently been standardized. In this paper, we first propose an dedicated short range communication architecture of demonstration system in telematics. Then we introduce two demonstration scenarios, the congestion avoidance system (CAS) and the emergency alert system (EAS), about transferring traffic information by WAVE/DSRC. This telematics´ field-trial demonstration system is composed of OBU in vehicle, RSU on roadside and LTS on remote site. This demonstration system uses WAVE short message protocol (WSMP) to send alert pictures and messages from vehicle to vehicle (i.e. V2V mode) and traffic information between vehicle and road-side unit (i.e. V2R mode).