The Research And Design Of A RPR-handoff-based WAVE Vehicle Network System

As a forward-looking research topic, the Internet of Vehicle has been concerned from all sides. The Internet of Vehicle will make a wide range interoperability of vehicles, roads, infrastructures and intelligent terminals. The Internet of Vehicle can not only provide travelers with convenient and efficient travel services, but also provide government with better transportation management platform.Firstly, the overall architecture of the Internet of Vehicle is designed, and then the requirements of the system architecture in wireless communications is analyzed by concerning the future traffic demand. The key technology of the Internet of Vehicle is Dedicated Short Range Communication(DSRC). DSRC has not become the international standards yet. Now the IEEE standards WAVE/DSRC is the most advanced and perfect in DSRC standards. WAVE is composed of two parts, IEEE 802.11p and IEEE 1609 protocol family. The similarities and differences between 802.11 network and 802.11p network is inroduced, and then the operating mechanism of the IEEE 1609.3/4 is analyzed. The WAVE prototypes are used in testing 802.11p network throughput performance, simulating different scenarios and analyzing the results. Because of the complex process for switching mechanism, the handoff of 802.11 network is not suitable for wireless access in vehicle environment. A fast handoff technology based on the Relative Position of RSU(RPR) for WAVE network is designed in order to achieve the vehicle quickly handoff between multiple RSUs. Finally, a cooperative vehicle-infrastructure system based on the WAVE prototypes and RPR handoff technology is designed to achieve the local broadcasting of traffic information, the monitoring and uploading of violations records. Finally, the Demo environment is set up to test and validate our cooperative vehicle-infrastructure system in the outdoors. The results is in line with expectations.