Vanet ppt

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its VANET.. vehicular adhoc network a new technology towards security and safety through the traffic

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Vanet ppt

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  3. 3. • PRESENTED BY: AKASH R• GUIDED BY: Smt. GEETHA RAJ R• CO-ORDINATED BY: Smt. ANJU J 3
  4. 4. • What is a VANET?• Intelligent transportation system• Vehicle to vehicle communication• Vehicle to infrastructure communication• Dedicated Short Range Communication• challenges• Applications of VANET• conclusion• references 4
  5. 5. Event data recorder (EDR) Positioning system (GPS) Forward radar Communication facility Rear radarHuman-Machine Display Interface Computing platformA modern vehicle is a network of sensors/actuators on wheels !
  6. 6.  Vehicles Transformed into “Computers on the Wheels” or “Networks on the Wheel” Vehicular Communication System (VCS):- Two main type of communications Vehicle to Vehicle (V2V) Communication:- Vehicle to Infrastructure (V2I) communication:- Advantage and Usage of VCS:- Information sharing Co-operative driving Other value added services like Navigation, internetaccess etc. ad-hoc means to a system of network elements that combine to form a network requiring little or no planning 6
  7. 7.  Communication between V2V and V2I are “ad-hoc" in nature. This special kind of communication network is known as “Vehicular Ad-hoc Network (VANET)” VANET will become Worlds largest ad-hoc network 7
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  9. 9. • Communication:- Wireless Access in Vehicular Environment (WAVE): IEEE 1609.2 Standard also Known DSRC 802.11p• Supports Multi-Hop communication for vehicles out of range (Max. Range DSRC is 1000m)• On-Board Unit (OBU):- A device which is inside the vehicle which processes the data collected from various sensorsfitted inside the cars and gives conditions of the vehicles is responsible for communication with outside networki.e with other vehicles and infrastructure. 9
  10. 10. • Road Side Unit (RSU): Infrastructure for communication between the cars for sharing and information from various vehicles. 10
  11. 11.  It allows safe and free flow traffic. It uses GPS and DGPS equipped devices. It uses various technology like:-1. Wireless communications2. Computational technologies3. Floating car data/floating cellular data4. Sensing technologies5. Inductive loop detection6. Video vehicle detection7. Bluetooth Detection 11
  12. 12.  Uses multi-hop/multi cast technique. uses two type of broadcasting1. naive broadcasting2. intelligent broadcasting 12
  13. 13.  High bandwidth link with vehicle and roadside equipment. Roadside units broadcast messages. 13
  14. 14. • Uses multi hop unicast 14
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  17. 17. Each vehicle is a node with unique ID. proactive routing• It tries to maintain routes to all destinations. Reactive routing• It initiates route discovery in demand of data traffic. Position based Routing• Routing based on destination’s position. 17
  18. 18. • Broadcasting algorithms used.• Data and control packet forwarding are loop free.• Ad hoc routing algorithms are used. Mobicasting• Consider time into account.• Main goal is delivery of information to all nodes in a point of time. 18
  19. 19. • Indicates level of performance given to user.• Provide robust routes among nodes.Security• Many threats for Vanet.• Avoid some threats using digital signatures. 19
  20. 20.  Routing• Large end-to-end delays and decreased packet delivery ratio. Security Frameworks• Need lightweight, scalable authentication frameworks.• Need reliable and secureness .• Need fast and low-cost message exchange facility. 20
  21. 21.  Quality of Service.• QoS challenges are packet delivery ratio and connection duration. Broadcasting.• Most messages in Vanet are broadcast messages.• Collisions affects message delivery. 21
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  23. 23. Three major classes of applications possible in VANET are safety oriented convenience oriented commercial oriented 23
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  25. 25. • Consists of vehicle-to-vehicle, vehicle-to-infrastructure communication.• It improves the safety of vehicles.• Supports Intelligent Transportation system. 25
  26. 26. • Raya, M. and Hubaux, J., “The Security of Vehicular Ad HocNetworks”, in Proceedings of the 3rdACM Workshop on Security ofAd Hoc and Sensor Networks (SASN 2005), Alexandria, VA,• Harsch, C., Festag, A. & Papadimitratos, P., “Secure Position-BasedRouting for VANETs”, in Proceedings of IEEE 66thVehicularTechnology Conference (VTC-2007).• Gerlach, M., Full Paper: Assessing and Improving Privacy inVANETs, www.networkon-wheels.de/downloads/escar2006gerlach.pdf. 26
  27. 27. • Jinyuan, S., Chi, Z. & Yuguang, F., “An ID-based Framework AchievingPrivacy and Non-Repudiation”, in Proceedings of IEEE Vehicular Ad HocNetworks, Military Communications Conference (MILCOM 2007).• Stampoulis, A. & Chai, Z., A Survey of Security in Vehicular Networks.• Balon, N., Introduction to Vehicular Ad Hoc Networks and the BroadcastStorm Problem,http://www.csie.ntpu.edu.tw/~yschen/course/96-2/Wireless/papers/broadcast-5.pdf . 27
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