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Authors : T . Sukuvaara and P. Nurmi

Wireless traffic service platform for combined vehicle-to-vehicle and vehicle-to-infrastructure communications. Authors : T . Sukuvaara and P. Nurmi. Speaker : 蔡明信. IEEE Wireless Communications, Vol 16, pp. 54 - 61 , December 2009. outline. Introduction Related work

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Authors : T . Sukuvaara and P. Nurmi

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  1. Wireless traffic service platform for combined vehicle-to-vehicle and vehicle-to-infrastructurecommunications Authors : T.Sukuvaara and P. Nurmi Speaker : 蔡明信 IEEE Wireless Communications, Vol 16, pp. 54 - 61 , December 2009

  2. outline Introduction Related work Platform and services System description Technical requirements Available wireless technologies Performance analysis and discussion Conclusions

  3. Introduction The vehicle-to-vehicle (V2V) communication platform is currently a popular research topic Traffic safety enhancement is the driving factor in many approaches,sensor data from vehicles and roadside units is used for providing accident and/or weather warnings to roadside units and vehicles.

  4. Introduction The capability for continuous communication is an important goal. In the carlink project the aim was to build more comprehensive solution for vehicle-to-infrastructure (V2I) and V2V communication purposes. Employed hybrid communication of general packet radio service (GPRS) and wireless networking.

  5. Introduction Wireless networking stands for the ultimate communication platform, while GPRS’s primary purpose is to provide an alternate communication solution. The simulations, pilot testing, and analysis evaluate the basic communication efficiency of the platform.

  6. Related work In the United States the Department of Transportation is coordinating the Vehicle Infrastructure Integration (VII) program. The European (Cooperative Vehicle Infrastructure Systems)CVIS project generates an open standards-based communication.

  7. Related work The main advantages of carlink are the open platform solution, the flexibility and scalability of the platform into different types of services and capacity communication requirements, and operation reliability based on dual radio communications.

  8. Platform and services The Carlink platform is designed to provide an infrastructure to a wide community of commercial and governmental traffic and safety services.

  9. Platform and services The wireless traffic service platform is divided into three parts: Traffic service central unit (TSCU) Traffic service base stations (TSBSs) Mobile end users (MEUs)

  10. Carlink services.

  11. Operational model of local RWS and incident warning service.

  12. Schematic of the road weather model.

  13. System description The TSCU is on the top with connections to the underlying service cores , it also stores all data gathered from the platform and forwards the appropriate data to services. Road weather service(RWS) core includes a weather forecast model

  14. The parameters gathered from the vehicle are the temperature, car throwing indicator, car sudden braking indicator, airbag blast notification The WLAN/WiMAX and GPRS interfaces are used for communication with the TSBSs and TSCU.

  15. Carlink platform structure

  16. Technical requirements The traffic speed (up to 100 km/h in our scenario) generates an extremely challenging element Ad-hoc networking with handoff and seamless continuation of communication are important issues required in the final operative system.

  17. Technical requirements The most popular solution for wireless communication is the Wi-Fi system, which is based on the IEEE 802.11 standard family. IEEE 802.11p represents the ultimate future solution

  18. Technical requirements wireless ad hoc communication between vehicles ensure that the most crucial data will also be exchanged in the platform without any delay when there are no TSBSs nearby.

  19. Available wireless technologies WLAN : Wi-Fi WiMAX

  20. PERFORMANCE ANALYSIS AND DISCUSSION Two main simulation : One-way traffic scenario Bidirectional traffic scenario

  21. PERFORMANCE ANALYSIS AND DISCUSSION Conditions : four or eight vehicles are traveling at 100 km/h speed The distances between consecutive vehicles were fixed to 100 m

  22. Main results of the simulations

  23. Conclusions Presented the carlink concept of a hybrid wireless traffic service platform between cars Showcases a true bidirectional communication entity Analyzed and forecast information about road weather conditions and immediate incident warnings.

  24. Conclusions Decrease accidents and lives lost in traffic. The ultimate goal was to create an intelligent communication platform.

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