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2. Introduction toVANETTechnology
■ VANET stands forVehicular Ad hoc NETwork.
*Ad hoc means a system of network elements that combine to form a
network requiring little or no planning.
*Two main types of vehicular communication system:
>Vehicle toVehicle (V2V)
>Vehicle to Infrastructure (V2I)
*BothV2V andV2I “Ad hoc” in nature

3. V2V Communication
■ V2V communication system that provides a 360 degree view of
similarly-equipped vehicles within communication range.
■ Vehicle control information such as the transmission state, break
status and steering wheel angle as well as theVehicle’s path
history and Path prediction.
■ Uses multi hop technique
■ Uses two types of broadcasting
> Naïve
> Intelligent

4. V2I Communication
■ High bandwidth link between vehicle and roadside equipment.
■ Uses DRSC(Dedicated Short RangeCommunication) technique

5. Challenges:
■ Routing
■ Security Framework
■ Broadcasting
■ Quality of Services (QoS)
Applications:
■ Major classes of application inVANET are:
■ Safely oriented
■ Convenience oriented

6. MAIN GOAL
■ It is designed to increase safety, driving efficiency and make
the driving experience more comfortable.
■ About 1.3 million people die from traffic accident per year.
■ About 60 percent of accidents can be avoided by sufficient
warnings.

7. TECHINCAL SPECIFICATIONS
■ VANETs use IEEE 802.11 wireless communication protocol.
■ Two types of messages sent withinVANETs:
> Periodic safety messages
> Event Driven Messages
■ Broadcast range about 1000 meters and nodes move at an average
speed of 120 kilometer per hour.

8. VANETs Characteristics
■ Power Supply and Conservation isn’t a major concern.
■ Leading Movement Fashion usually occurs on long Highways.
■ Highly Mobile Nodes in constantly changing networks.
■ Unbounded Network size
■ Real-time, time sensitive data exchange
■ Crucial effect of security and privacy.

9. VANETsArchitecture:

10. TELEMATICS FEATURES
■ Security Features are triggered by sensors and events.
■ Convenience features are used to enhance the driving experience.
■ Components used to communicate with other cars, hubs, stations and
content providers.
■ Two main features:
> Security
> Convenience

11. CURRENT USES
■ One of the largest content provider’s is OnStar.
■ Provides safety, emergency and convenience services viaVANETs
> Navigation Services
> Emergency Response
>Theft Assistance

12. Emergency Alerts
■ VANETs are used to disseminate alerts such as Amber Alerts, Silver
Alerts and emergency weather alerts
■ Vehicles GPS location determines the alerts it receives.
■ Potential to save lives.

13. Security and Privacy
■ Due to high mobility, security is more challenging.
■ Wireless nature of transmission process security and privacy concerns.
■ Information such as location, destinations, and speed history have the
potential to be intercepted.

14. POSSIBLE INNOVATIONS
■ 30 Percent of accidents involving emergency vehicles are caused by
other drivers.
■ Including Hospitals in theVANETs communication can help further
increase effectiveness of communications.
■ Alerting vehicles on the road that an emergency vehicle is approaching.

15. Advantages ofVANET
■ Information sharing
■ Cooperative driving
■ Other value added services like navigation, internet access etc.
■ It allows safe and free flow of traffic

16. Routing inVANETs:

17. THANKS 