Introduction and simulation of dedicated short range communication

Intelligent Transport System can improve traffic safety and reduce traffic congestion and environmental pollution. Wireless communication capability is one of the most important bases of intelligent transportation system. The main technologies include IEEE 802.11p based dedicated short-range communication technology (DSRC) and cellular network based LTE-V2X technology. DSRC is more mature, and has been deployed and applied in some developed countries. This paper presents the enactment history of DSRC standard in the United States, frequency band and channel division, protocol stack and MAC-layer channel access modes; and simulates the performance of safety related message and non-safety related message of DSRC under different conditions of node density, transmission power, channel access modes and routing protocol.