1. V2V Communication and ITS Implications
Prof. Umit Ozguner
TRC Inc. Chair on ITS
The Ohio State University
July 31, 2007
Control and Intelligent Transportation Research Lab

2. Control and Intelligent Transportation Research Lab
Overview
Applications
V2V VI .
Testbeds
V2V & VI
Simulator
Research issues
Control and Intelligent Transportation Research Lab

3. Control and Intelligent Transportation Research Lab
V2V & V2I Testbed at The Ohio State University Center for Automotive Research and Intelligent Transportation
The V2V & V2I Testbed presently has 3 outfitted vehicles and 2 base stations.
Control and Intelligent Transportation Research Lab

4. OSU Testbed: Field Tests in an Open Area
Receiver moved at x km/hr towards the stationary transmitter
Measured using DSRC radios:
Received Power
Bit Error Rate
Control and Intelligent Transportation Research Lab

5. OSU Testbed: Curve Hopping
SDC at 5.9 GHz
LDC at 220 MHz
●　Hopping measurement at curve
Place : SDC Received Power ≧ LDC Received Power
Vehicle 1(accident vehicle)
(With LDC and SDC systems)
LDC
Vehicle 1
(Stop, Hazard on)
Vehicle 2 (Guest’s vehicle)
(With LDC and SDC systems)
LDC
SDC
Vehicle 3 (Hopping vehicle)
(With only SDC system)
Hopping Communication Area
SDC Communication Area
SDC
SDC Communication Area
Vehicle 3
Vehicle 2
(Stop)
Control and Intelligent Transportation Research Lab

6. OSU Testbed: Blind Intersection
●　Head-to-head encounter accident prevention at blind intersection
Vehicle 1 (Accident vehicle)
(It has LDC and SDC systems.)
Vehicle 2 (Guest’s vehicle)
(It has LDC and SDC systems.)
Building
Building
LDC
LDC
1. Vehicle 1 and vehicle 2 run into each other.
2. Vehicles can’t observe each other, because
of building. Vehicles transmits vehicle
location each other.
3. Vehicle receives packet and tells driver
warning.
Building
Building
Control and Intelligent Transportation Research Lab

7. OSU Testbed: Long Distance Communication
Vehicle 1 (Accident vehicle)
(It has LDC and SDC systems.)
●　Transmit incident warning occurred at long distance, and tell driver incident warning
Vehicle 2 (Guest’s vehicle)
(It has LDC and SDC systems.)
Warning information about vehicle 1
1) Distance between vehicles: 7 km “Accident 7 km Ahead!”
2) Distance between vehicles: 3 km “Accident 3 km Ahead!”
3) Distance between vehicles: 1 km “Accident 1 km Ahead!”
4) Distance between vehicles: 700 m
“Car Stopping 700 m Ahead!”
5) Distance between vehicles: 300 m
“Car Stopping 300 m Ahead!”
6) Distance between vehicles: 100 m
“Car Stopping 100 m Ahead!”
x km
Control and Intelligent Transportation Research Lab

8. OSU Testbed: Picture Transmission: V2V or VI
Control and Intelligent Transportation Research Lab

9. Safety Needs Investigation by a complex simulation environment
Control and Intelligent Transportation Research Lab

10. Research Directions: Urban Multi-hop Broadcast (UMB)
Directional Broadcast
Packet dissemination along the road
Source Vehicle
The furthest vehicle in the transmission range of the source vehicle
Intersection Broadcast
Start new directional broadcasts along other road segments
UMB protocol is composed of two components, namely directional broadcast and intersection broadcast.
Directional broadcast controls the packet dissemination along a road segment. This protocol assigns the duty of forwarding and acknowledging the broadcast packet only to the furthest vehicle.
When there is an intersection in the path of the message dissemination, new directional broadcasts are initiated by the repeater located at the intersection.
GOALS
1. High reliability by acknowledged message delivery
2. Low induced traffic in single and multi-hop scenarios
Control and Intelligent Transportation Research Lab

11. Possible Additional Directions
Source
Destination Area:
An exit of a highway
Source
Destination Position (x, y)
Unicast
Geocast
Design Goal: Send packets to a single node whose position is known.
Possible Destinations: Other vehicles, gas stations, restaurants
Design Goal: Send packets to a group of nodes in a geographic region.
Possible Destination: Nodes around a highway exit
Control and Intelligent Transportation Research Lab

12. Other research direction: Internet Access in Vehicular Networks
Goal: Internet access in vehicles
Objectives:
Providing high end-to-end throughput
Preventing starvation of vehicles far away from the gateways
INTERNET
Gateway A
Gateway B
Service Area of Gateway A
Service Area of Gateway B
Internet access is accomplished through fixed internet gateways along the road.
: Physical transmission range
Vehicles communicate with distant gateways via multi-hopping.
Control and Intelligent Transportation Research Lab

13. Other Infrastructure at Ohio State: Kansei: A hybrid testbed
Generic Platform Array
Acoustic & Seismic
Environmental
Testing by coupling a generic platform array (located in warehouse) with multiple domain sensing/comm arrays (ported to fields)
Multimodal
Mobile
Control and Intelligent Transportation Research Lab

14. Control and Intelligent Transportation Research Lab
End-to-end experimentation enabled via service components, exposed via web interface (and soon as web services)
Code Deployment
Scheduling
Job Control (Stop, Suspend, Resume, Move)
Orchestration (Multi-phase jobs)
Testbed Health State
Injection
Data and Experiment Status
Frequency and Key Management
Contact Prof. A. Aurora: Anish Arora
Possibility of linkage and interaction being considered. The OSU-V2V testbed can provide realistic data to be then emulated on KANSEI. KANSEI can provide (in real time) an aggregated model of “the rest of the city”.
Control and Intelligent Transportation Research Lab

15. Control and Intelligent Transportation Research Lab
Some Selected References:
“Ohio State University Bus Location Information System", Proceedings of the Intelligent Transportation Society of America 8th Annual Meeting and Exposition, pp. 1-9, Detroit, May (Keith A. Redmill, John I. Martin, and U. Ozguner)
"Wireless Issues in ITS," Proc. Int. Symp. on Antennas and Propogation, Fukuoka, Japan, June (Plenary Talk). (Ümit Özgüner, Brian Baertlein and Mike Fitz)
“Inter-vehicle Communication Recent Developments at Ohio State University”, Proceedings of IEEE Intelligent Vehicle Symposium, France, June (Ü. Özgüner, F. Özgüner, M. Fitz, O. Takeshita, K. Redmill, W. Zhu, and A. Dogan)
“A MAC Layer Protocol for Real-time Inter-vehicle Communication”, Proceedings of IEEE 5th International Conference on Intelligent Transportation Systems, Singapore, September 2002, pp (Abhishek Pal, Atakan Dogan, Füsun Özgüner, and Ümit Özgüner)
"Evaluation on Intersection Collision Warning System Using Inter-vehicle Communication Simulator", Atakan Dogan, Gokhan Korkmaz, Yiting Liu, Fusun Ozguner, Umit Ozguner, Keith Redmill, Oscar Takeshita, Intelligent Transportation Systems, Proceedings IEEE, Oct. 2004, Washington, D.C., USA, Pages:
“Urban Multi-Hop Broadcast Protocol for Inter-Vehicle Communication Systems,” VANET 2004, Boston, ( G. Korkmaz, E. Ekici, F. Ozguner, U. Ozguner)
"A complete simulator architecture for inter-vehicle Communication Based Intersection Warning Systems,"in Proceedings of IEEE Conference on Intelligent Transportation Systems, Vienna, Austria, 2005, pp , ( Avila, G. Korkmaz, Y. Liu, H. Teh, E. Ekici, F. Ozguner, U. Ozguner, K. Redmill, O. Takeshita, K. Tokuda, M. Hamaguchi, S. Nakabayashi, and H. Tsutsui)
The slides represent the work of the OSU V2V Team. Prof. M. Fitz, Dr. A. Dogan, Prof. E. Ekici, Prof. F. Ozguner, Prof. U. Ozguner, Dr. K. Redmill and Prof. O. Takeshita have participated. The publications listed above are from Prof. U. Ozguner. Those interested can contact other OSU V2V Team members.
Control and Intelligent Transportation Research Lab