Vehicular AdHoc Networks

1. VEHICULAR AD HOC
NETWORK

2. INTRODUCTION
VANET
 Vehicular Ad-hoc NETwork -VANET
 A robust Ad-hoc network between mobile
vehicles and each other, besides, between
mobile vehicles and roadside units.
2

3. MANET AND VANET
3

4. cont…
Two types of nodes in VANETs
 Mobile nodes as On Board Units (OBUs)
 Static nodes as Road Side Units (RSUs).
4

5. On Board Units & Road Side unit
(A) An OBU based on :
• The mobile network module
• A CPU for on-board sensors and warning devices.
(B) RSU:
Mounted in centralized locations
- Intersections
- parking lots
- gas stations etc..
They can play a significant role in many
applications
5

6. VANET communications
6

8. SPECIAL CHARACTERS OF
VANET :
1. High Dynamic Topology:
2. Frequent Disconnected Network:
3. Mobility Modeling and Prediction:
4. Communication Environment:
8

9. Cont…
5. Unlimited Transmission Power
6. Hard Delay Constraints
7. Interaction with On Board sensors
8. Highly Computational Capability
9

10. Cont…
9. Rapidly Changing Network Topology
10.Potentially Unbounded Network Size
11.Anonymous Addressee
12.Time-Sensitive Data Exchange
10

11. Cont…
13.Potentially Support from Infrastructures
14.Abounded Resources
15.Better Physical Protection
16.Partitioned Network
11

12. VANET APPLICATIONS
• Safety Oriented:
 Life-Critical Safety applications
 Safety warning applications
• Convenient Oriented:
 Internet access
 Group Communications
 Electronic Toll Collections
12

13. CONT…
• Commercial Oriented :
-Driver Ad Hoc Networking Infrastructure
-Dedicated Short Range Communications
13

14. FUTURE WORK
Traffic lights can be connected
to communication networks
The vehicle will receive proper
file resource.
Range from safety and
avoidance to internet access and
multimedia 14

15. THANK YOU…
15