This presentation i just published the wireless communication between the vehicle which is going to be a future technology.In this technology communication of vehicle helps to intimate the driver about the startegies of surrounding vehicle......

1. VEHICLE-TO-VEHICLE
WIRELESS
COMMUNICATION
BY,
M.RAHUL
P.THANGAMUTHU

2. 2
CONTENT
 Introduction
 Motivation
 How it works?
 Application challenges
 State transition
 Future works
 Reference
 Conclusion

3. 3
INTRODUCTION
 V2V Communication technology provide
communication to the cars and helps the user to prevent
accidents.
 First proposed by GENERAL MOTORS
 It is still in the DEVELOPING STAGE

4. 4
why they Introduce?
For what ?
How it is?

5. 5
ROAD ACCIDENT CAUSE STATISTICS
Study shows - “About 60% roadway collisions could be avoided if the
operator of the vehicle was provided warning at least one-half second prior to
a collision”

6. 6
Constraints of human drivers perception
Line-of-sight limitation of brake light
Large processing/forwarding delay for emergency
events.
MOTIVATION

7. 7
1. Line of Sight Limitation
What’s in front ofWhat’s in front of
that bus ?that bus ?
What’s behindWhat’s behind
the bend ?the bend ?
On rainy daysOn rainy days
On foggy daysOn foggy days
Constraints of human drivers’ perception
Fig.

8. 8
2. Large forwarding delay for emergency events.
Constraints of human drivers’ perception
Reaction time ranges from 0.7sec to 1.5sec

9. 9
HOW IT WORKS ?
DSRC CHIP

10. 10
DSRC
(Dedicated short range communication)
 DSRC is mainly used for short range of
communication
 The range provided for communication is 300m
 DSRC is connected with wifi with a band of
5.9Ghz
 It is called as transceiver

11. 11
+

12. 12
TERMS
 Abnormal Vehicle (AV)
A vehicle acts abnormally, e.g. deceleration exceeding a
certain threshold, dramatic change of moving direction,
major mechanical failure, etc.
 Emergency Warning Messages (EWM)
Messages generated by an AV to warn other
surrounding vehicles, which include
geographical location
 speed
 acceleration
moving direction of the AV.

13. 13
STATE TRANSITIONS OF
AVS
Initial AV: When an emergency event occurs to a vehicle, the
vehicle becomes an AV and enters the initial AV state,
transmitting EWMs following the rate decreasing algorithm.
Flagger AV: resuming EWM transmissions at the minimum
required rate.
Non-flagger AV: nonparticipating in sending EWMs to the
group on some conditions to eliminate redundant EWMs
Each AV may be in one of three states:

14. 14
APPLICATION
Emergency Electronic brake light
Blind spot application
Lane change warning
Forward collision warning
Do not pass warning

15. 15
Application Challenges <1>
Co-existing AVs: AVs whose existences overlap in
time and whose transmissions may interfere with
each other
An AV can exist for an extended period of time
Chain effects of emergency road situation
Fig.
3

16. 16
Examples of state transitions

17. 17
FUTURE WORKS
Vehicle manufacturers would install the technology in all new
vehicles,
beginning at a particular model year
Full-scale deployment in both the vehicles and the roadside
infrastructure.
Intelligent Transportation Systems (ITS) Program

18. Hi
Buddy
A new era is arriving where vehicles will
communicate with each other, the devices within them, and
also with the world; making the next generation of vehicles
into communication hubs.
CONCLUSION
VEHICLE TO VEHICLE COMMUNICAATION is still in
the developing stage and many researches were going
on to study the feasibility of introduction of this system

19. 19
References
[1]AUTOMOTIVE NEW TECH Magazine ; Author:S.X Wayne
[2]S. Biswas, "Vehicle-to-Vehicle Wireless Communication Protocols for
Enhancing Highway Traffic Safety," Communications Magazine, IEEE
Publication.
[3] X. Yang et al., " A Vehicle-to-Vehicle Communication Protocol for
Cooperative Collision Warning, “paper published on 2014.

20. 20
ANY QURIES ?