Vehicle-to-vehicle Wireless Communication.ppt 1i5r73

Vehicle-to-Vehicle Wireless Communication Protocol for Collision Warning

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Contents • • • • • • • • •

Motivation Application Levels Overview of Vehicular Communications Needs and Assumptions Protocol for Vehicular Comm. Application Challenges State Transition Future Works Conclusion References 2

Motivation

Accidents have been taking thousands of lives each year Study shows - “About 60% roadway collisions could be avoided if the operator of the vehicle was provided warning at least one-half second prior to a collision” (- US. Patent No. 5,613,039)

Constraints of human drivers’ perception Line-of-sight limitation of brake light Large processing/forwarding delay for emergency events. 3

Application Levels Traffic Safety can be improved if drivers have the ability to see further down the road.

If traffic information was provided to Drivers, Police and other Authorities; roads would be safe and traveling on them would be more efficient Vehicle-to-Vehicle(V2V) and Vehicle-to-Roadside(V2R) Communication can bring out the following achievements. Presence of obstacles on road. Emergency Braking of a preceding vehicle. Information about Blind Crossing, School proximity, Railway crossing etc… Entries to Highways. High Speed Internet Access. Electronic Toll Collection. Parking Space locater in Cities. Nearest Petrol Pump, Workshop etc..

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Needs and Assumptions for a vehicle participating in V2V communication

Interested on Direction, Speed, Position etc… Is able to obtain its own geographical location and determine the relative positions on the road.(Digital Maps, GPS) Is equipped with at least one wireless transceiver

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Conclusion An Overview of Vehicular Comm. is given. Protocol of Vehicular Comm. Is discussed. Protocol Challenges are also analysed.

A new era is arriving where vehicles will communicate with each other, the devices within them, and also with the world; making the next generation of vehicles into communication hubs. 6

References [1] S. Biswas, "Vehicle-to-Vehicle Wireless Communication Protocols for Enhancing Highway Traffic Safety," Communications Magazine, IEEE Publication Date: Jan. 2006 Volume: 44, Issue: 1 page(s):74- 82 [2] X. Yang et al., " A Vehicle-to-Vehicle Communication Protocol for Cooperative Collision Warning,"Proc. 1st Annual Int’l. Conf. Mobile and Ubiquitous Syst: Networking and Services, 2004 [3] G.S Bickel, "Inter/Intra-Vehicle Wireless Communication" at http://fs.cec.wustl.edu/~gsb1/index.html [4] Q. Xu, R. Sengupta, and D. Jiang, "Design and Analysis of Highway Safety Communication Protocol in 5.9 GHz Dedicated Short-Range Communication Spectrum," Proc. IEEE VTC, vol. 57, no. 4, 2003, pp. 2451–55 [5] C.Bettstetter "Toward Internet-Based Car Communications: On Some System Architecture And Protocol Aspects" TUM, [6] J. Zhu and S. Roy, "MAC for Dedicated Short Range Communications in Intelligent Transport Systems,"IEEE Commun. Mag., vol. 41, no. 12, 2003 [7] http://www.car-to-car.org/

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