V2 V Communication and ITS Implications

Control and Intelligent Transportation Research Lab

V2V Communication and ITS Implications

Prof. Umit Ozguner TRC Inc. Chair on ITS

The Ohio State University

July 31, 2007

[email protected]


Overview

• Applications– V2V– VI– .

• Testbeds– V2V– V2V & VI– Simulator

• Research issues– .– .


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.


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


OSU Testbed: Curve Hopping

Hop

ping

Com

mun

icat

ion

Are

aSD

C C

omm

unic

atio

n A

rea

Vehicle 2(Stop)

Vehicle 1(Stop, Hazard on)

Vehicle 3

SDC Communica

tion A

rea

Vehicle 2 (Guest’s vehicle)(With LDC and SDC systems)

Vehicle 3 (Hopping vehicle)(With only SDC system)

● 　 Hopping measurement at curvePlace : SDC Received Power LDC Received Power≧

Vehicle 1(accident vehicle)(With LDC and SDC systems)LDC

LDC SDC

SDC

SDC　at　5.9　GHz

LDC　at　220　MHz


OSU Testbed: Blind Intersection

Building

Vehicle 1 (Accident vehicle)(It has LDC and SDC systems.)

Vehicle 2 (Guest’s vehicle)(It has LDC and SDC systems.)

● 　 Head-to-head encounter accident prevention at blind intersection

Building Building

Building

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.

LDC

LDC


OSU Testbed: Long Distance Communication

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!”



x k

m

Vehicle 1 (Accident vehicle)(It has LDC and SDC systems.)

Vehicle 2 (Guest’s vehicle)(It has LDC and SDC systems.)

● 　 Transmit incident warning occurred at long distance, and tell driver incident warning


OSU Testbed: Picture Transmission:V2V or VI


Safety Needs Investigation by a complex simulation environment


Research Directions: Urban Multi-hop Broadcast (UMB)

Intersection Broadcast Start new directional broadcasts

along other road segments

Directional Broadcast Packet dissemination along the

road

Source Vehicle

The furthest vehicle in the transmission range of the source

vehicle

GOALS

1. High reliability by acknowledged message delivery

2. Low induced traffic in single and multi-hop scenarios


Possible Additional Directions

Source

Destination Position (x, y)

Source

Destination Area:

An exit of a highway

Design Goal: Send packets to a group of nodes in a geographic region.

Possible Destination: Nodes around a highway exit

Design Goal: Send packets to a single node whose position is known.

Possible Destinations: Other vehicles, gas stations, restaurants

GeocastUnicast


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 BGateway A

Service Area of Gateway A

Service Area of Gateway B

: Physical transmission range

• Internet access is accomplished through fixed internet gateways along the road.

• Vehicles communicate with distant gateways via multi-hopping.


Other Infrastructure at Ohio State: Kansei: A hybrid testbed

Generic Platform Array

Acoustic　&　Seismic

MobileMultimodal

Environmental

Testing　by　coupling　a　generic　platform　array　(located　in　warehouse)　with　multiple　domain　sensing/comm　arrays　(ported　to　fields)


• 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 <[email protected]>

•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”.


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 1998. (Keith A. Redmill, John I. Martin, and U. Ozguner)

"Wireless Issues in ITS," Proc. Int. Symp. on Antennas and Propogation, Fukuoka, Japan, June 2000. (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 2002. (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. 353-358. (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, 2004. Proceedings. 2004 IEEE, Oct. 2004, Washington, D.C., USA, Pages: 1103-1108

“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. 461-466, ( 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.

V2 V Communication and ITS Implications

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