The Research Of City Vehicular Networking System Based On RDMT-BA Algorithm

Ad Hoc network as a new wireless communication technology, because of its selforganization, removability and other significant characteristics, are widely used inintelligent traffic organization in city. Because of the existence of complex scenes such asmulti lane or multi fork, and the interference factors like pedestrians and non-motorvehicles random moving in city scenarios, the road information become complex. So thebroadcast technology, as the basic communication mode in Ad Hoc wireless networks, hasseveral limited algorithms. Therefore a Broadcasting Algorithm based on RelativelyDistance and Message Type, RDMT-BA, is proposed. The specific contents are as follows:Firstly, introduced the basic structure, characteristics and applications of Ad Hocnetwork, and discussed and analyzed the advantages and disadvantages of commonbroadcast algorithms at present.Secondly, according to the complexity of city scene, proposed the RDMT-BAbroadcast algorithm. The algorithm defined relative distance S, relative velocity V,forwarding threshold D and latency T, and applied to the straight road and cross road, thenanalyzed respectively in the coverage, forwarding save number and delay time with theflooding algorithm.Finally, designed the hardware module and software programs by using ZigBeewireless technology, and has completed detailed experimental measurements. Theexperimental results and RDMT-BA algorithm simulation data were compared andanalyzed, to verify the feasibility and accuracy of RDMT-BA algorithm.