a vehicular ad hoc network consists of group of moving or stationary vehicles connected by a wireless network

1. K. Sahithi
21315A0427
ECE-E

2. CONTENTS
 Introduction
 What Is Vanet ?
 Components Of Vanet
 Intelligent Transportation System
 Vanet Architecture
 Vehicular Network Communication
 Dedicated Short Range Communication
 Security Requirements
 VANET Research Challenges
 Applications
 Conclusion

3. INTRODUCTION
 VANET “Vehicular Ad Hoc Network ” is an application of MANET & Self -
configuring network of vehicle.
 Nodes are connected by wireless links
 Vehicles are free to move in all directions “360 - degree ”
 Communicaitons require above standard wireless to handle the fast dynamic
network changes to provide real time results with high accuracy such as
IEE802.11P
 Every node sends , receives and retransmits data that includes speed , location
and direction

4. What is VANET ?
 Vehicles transformed into “computers on the wheels ” or “ Networks on the
Wheel”
 Vehicular Communication System (VCS) :- Two main types of communications
Vehicle to Vehicle (V2V) Communication
Vehicle to Infrastructure (V2I) Communication
 Adavantages and Usage of VCS :-
Information Sharing
Co-operative Driving
Other value added services like Navigation , Internet access etc.
 Ad - HOC means to a system of network elements that combine to form a
network requiring little or no planning

5. Components of VANET
• Vehicles
• Electronic and hardware components like sensors and actuators also software
components like operating systems , diagnostic software , peripheral drivers
and so on .
• Intelligent Actuators are five separate main units of the vehicle
( Engine , Transmission , Suspension , Brake system and steering system)
• Integrated Vehicle Control which has an infulence on the movement of the
whole vehicle
• Sensor devices
( Radar , Video Camera and Lidar “ static laser scanner in 1 direction ”)
• Road Side Unites.
• Control of vehicle Groups and Fleets

6. INTELLIGENT TRANSPORATION SYSTEM
 It allows safe and free flow traffic .
 It uses GPS and DGPS equppied devices
 It uses various technology like : -
1. Wire less communication
2. Computations technologies
3. Floating car data /floating cellular data
4. Sensing tecnologies
5. Inductive Loop detection
6. Video vehicle detection
7. Bluetooth Detection

8. COMMUNICATION
VANET vehicle communication are of two types
Vehicle to vehicle communication (V2V)
Vehicle to infrascture communication ( V2I)

10. • Communication between vehicles in ad hoe mode
A vehicle can receive , transmit or exchange valuable traffic information such as traffic
condition and road accidents with other vehicles.

11. • Broadcast between the network infrastructure and vehicles.
• Exchange of useful information about road conditions and safety measures to be taken into
account
• A vehicle establishes a connection with the RSU to connect and communicate with external
network such as the Internet.

12. Routing Based Communication
Uses multi hop unicast

15. Automation Levels
• Warning
• Support
• Semi - automated
• Highly Automated
• Full Automaiton

16. VANET Research Challenges
 Routing
• Large end to end delays and decreased packet delivery ratio.
 Security Frameworks
• Need lightweight scalable authentication frame works.
• Need reliable and secureness
• Need fast and low-cost message exchange facility

17. VANET Applications
 Safety - related applicaitons Non - safety related applicaitons
(Comfor - related)
• Assistance Weather Information
- Navigation Instant messaging
- Cooperative collision avoidance Online games
- Lane - Changing Intenet access
• Information Advertisement
- Speed Limit
- Work Zone info
• Warning
- Post - crash
- Obstacle
- Road condition Warnings

18. CONCLUSION
• Conclusion of vehicle to vehicle , vehicle to infrastructure communicaiton
• It improves the safety of the vehicle
• Supports Intelligent Transportation system

20. THANK YOU