Provides detail description about VANET applications.

1. User Requirements Model for Vehicular Ad hoc
Network (VANET) Applications
Dr. IA. Sumra

2. overview
 Introduction
 Dedicated Short Range Communication (DSRC)
 Propose Model
 VANET Applications
 Conclusion
 References
 Q&A
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3. Introduction
 Problems in Current Traffic System(TS)
 Road Accident
 Traffic Congestion
Fig.1 Road Accident Fig.2 Traffic Congestion
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4. Introduction
 Accidents
 1.27 million people are died over the globe in traffic accidents.
 50 million people are seriously injured
 In poor countries the children death rate due to road accident is high as compare
to any other serious disease such as malaria or AIDS.
 Passage of time the rate of road accidents is increasing and by 2020 the increasing
road accidents will become serious threats to human lives.
People
Injuries
People
Died
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5. Introduction
 Traffic Jam
 In 2003, US drivers lost a total of 3.5 billion hours and
5.7 billion gallons of fuel to traffic congestion.
5
Time Fuel

6. Vehicular Ad hoc Network (VANET)
 Vehicular ad-hoc network is a special kind of network in which nodes (Vehicles) can
communicate with each other on the road and with its Infrastructure.
 Benefits of VANET to users
 Avoids Road Accidents
 Reduces Traffic Congestion
 Improves Entertainment
Road Side
Unit (RSU)
V2I
V2
V
Server (Location
Based Service)
Server (Traffic
Monitoring)
Fig3. Basic VANET Architecture

7. Motivation for VANET
Increase safety Traffic Optimization
Safe Human
lives
Save Time Save Fuel
VANET Motivation
Fig4. VANET Motivation
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8. Dedicated Short Range Communication (DSRC)
 Federal Communication Commission (FCC)
allocate frequency band and purpose of this is to
provide wireless communication between vehicle
to vehicle (V2I) and vehicle to Infrastructure (V2I).
 DSRC provides multiple channels and its
transmission ranges from 5.850 to 5.925 GHz.
 DSRC provides seven channels (safety and non
safety channels) and each channel range is 10
MHz.
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9. 9
Dedicated Short Range Communication (DSRC)
Fig5. DSRC and its safety and non safety Channels

10. Proposed Model
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 Proposed model is consist of three layers.
 First layer describe the basic users’ requirements which are Security, privacy
and trust.
 Second and third layers are consisting of the safety and non safety
applications of the
VANET and these two layers meet first layer requirement.
Fig.6 User Requirements Model

11. User Requirement and VANET Applications
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Security
Trust
Privacy
Safety
Application
Non Safety
Application
VANET

12. Security, Privacy and Trust(SPT)
 Security
 Security is an important user’s requirement in VANET as if VANET is not secure from attackers then
these applications may not achieve the primary purpose i.e. safer human lives.
 VANET applications require the integrity because life critical information should not be changed by
any attacker.
 Vehicle wants to access the other vehicles in the network or access the infrastructure, then network is
not available to user due to some kind of fault or any kind of attack (denial of service).
 Privacy
 Privacy in VANET is to secure the user’s personal data and their location. When user sends any
message to other vehicles, it should not affect their privacy. Users’ need privacy and may not allow
seeing their personal data and their locations. Users sensitive information can not open to
unauthorized persons.
 Name of user / driver
 License plate of the vehicle
 Speed of the vehicle
 Position / Location
 Route for traveling
 Internal car sensor data
 Trust
 Trust is the key element of security system. When users receive any message from other nodes or
from infrastructure it should be trusted because user reacts according to the message. The attackers
change the contents of the message and break the trust between the vehicles.
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13. Security
Accident at
location Z!
Road is
CLEAR!!!!
Fig.7 Attacker alters the message
RSU
TOC
Fig.8 Jam Communication Channel between V2V and V2I

14. Safety Applications
 Active Safety Applications
 Active safety application can help to prevent accidents and work as pre crash applications.
 Active safety applications are based on control functions and the purpose of this to
exchange the sensor data or status information between the vehicle to vehicle (V2V) and
vehicles to infrastructure (V2I).
 The goal of sending this kind of information to users is to react accordingly and avoid the
accident.
 Passive Safety Applications
 Passive safety applications work inside the vehicle and protect the passengers against injury in the
event of accident.
 Safety belt and air bags are the examples of passive safety applications.
 Passive safety applications can not provide help to avoid accidents.
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Work
in Progress
Plz!use Alt.
route
Work Zone
Warning:!!!
Fig.9 Safety Application
Work Zone
Warning:!!!

15. Non Safety Applications
Shopping MALL
( TESCO )
Parking Slot
Available!!!
RSU
Fig.11 Non Safety Application
Parking Slot
Available!!!
 Convenience Applications
 Road Status Services (RSS)
 Parking Availability Services (PAS) Road is
CLEAR!!!!
Fig.10 Road Status Services (RSS)
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16. Non Safety Applications
 Comfort Applications
 Toll Collection Services (TCS)
 Personal and Diagnostics Services (PDS)
 Services offering Messages (SOM)
 Map Download Services (MDS)
 Entertainment Service (ES)
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17. Fig.12 Summary of all Applications17

18. Conclusion
 Due to high death rate and congestion on roads,
researchers and car manufacturing industries want to find
some possible solutions by using of VANET technology.
 VANET potential applications directly focus on user’s life
on the road by sending some safety messages. In propose
model it is explained the relationship between the user
requirements and VANET safety and non safety
applications are meets these requirements.
 In future these VANET applications will improve the traffic
system and reduces the death rate in road accidents.

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 ResearchGate
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