Dedicated short-range communication (DSRC) and 4G-LTE are two widely used candidate schemes for Connected Vehicle (CV)\napplications. It is thus of great necessity to compare these two most viable communication standards and clarify which one canmeet\nthe requirements of most V2X scenarios with respect to road safety, trafficefficiency, and infotainment.To the best of our knowledge,\nalmost all the existing studies on comparing the feasibility of DRSC or LTE in V2X applications use software-based simulations,\nwhichmay not represent realistic constraints. In this paper, a Connected Vehicle test-bed is established, which integrates the DSRC\nroadside units, 4G-LTE cellular communication stations, and vehicular on-board terminals. Three Connected Vehicle application\nscenarios are set as Collision Avoidance, Traffic Text Message Broadcast, and Multimedia File Download, respectively. A software\ntool is developed to record GPS positions/velocities of the test vehicles and record certain wireless communication performance\nindicators.The experiments have been carried out under different conditions.According to our results, 4G-LTE ismore preferred for\nthe nonsafety applications, such as traffic information transmission, file download, or Internet accessing, which does not necessarily\nrequire the high-speed real-time communication, while for the safety applications, such as Collision Avoidance or electronic traffic\nsign, DSRC outperforms the 4G-LTE.
Loading....