The Communication Performance Of Intelligent Transportation System In Simple Scenarios

With the progress of urbanization and the the car's popularity, transport is getting worse, the conventional reliance on increasing road construction, improving road network capacity, etc. to solve the traffic problem has been unable to meet the needs of modern urban transportation. In this case, Intelligent Transportation System (ITS) concept have been proposed. Intelligent Transportation System (referred to as ITS) is an advanced information technology, data communication transmission technology, electronic sensor technology, electronic control technology and computer processing technology used to effectively integrate the entire transportation management system, built up a kind of a large scale, full-functioning, real-time, accurate and efficient integrated transport and management systems. Intelligent Transportation Systems (ITS) as an emerging field of communication research, in solving traffic problems, particularly in the secondary road driving and increased road safety have great significance.This paper first introduces the ITS,WLAN concepts and 802.11p protocol, then set up Intelligent Transportation Systems (ITS) communications network. Under the uniform traffic scenario in the establishment of vehicle to vehicle communications connectivity model. Connectivity model is a probability model, is carried out through the range of the split on the road, and according to MFR, node, hop count constraint rule set up the model. Model can be used to study the information transmission probability of success. Through the analysis, the following conclusions:information transmission probability of success not only by the scope of communication with the communication capabilities of vehicles, will be the proportion of vehicles with communication capabilities and the impact of traffic distribution. Communication range increases, the traffic density increases and improved the proportion of vehicles with communication capabilities will increase the success rate of information transmission. Finally use simulation tools NCTUns to study a simple scenario (single hop and multi-hop), the different parameters set on the vehicle to vehicle communication performance. Simulation results show that short distance single hop vehicle to vehicle communication, reduce the speed and expand the communication range will only increase the duration of communication, the destination node throughput and end to end delay is almost no effect. In multi-hop scene, information transmission throughput and latency are maintained at the same level, and only small changes.