http:// vehicular networks: @ ucla

http://www.scalable-networks.com http://www.ismb.it/http://www.ismb.it/http://www.ismb.it/

Vehicular Networks: Vehicular Networks:

@ @ UCLAUCLA

2G. Pau NSF Mobility Workshop @ Rutgers, `07 http://www.vehicularlab.orghttp://www.vehicularlab.org

The Standard: DSRC / IEEE 802.11p

Car-Car communications at 5.9Ghz

Derived from 802.11a three types of channels:

Vehicle-Vehicle service, a Vehicle-Gateway service and a control broadcast channel .

Ad hoc mode; and infrastructure mode

802.11p: IEEE Task Group for Car-Car communications

Forward radar

Computing platform

Event data recorder (EDR)

Positioning system

Rear radar

Communication facility

Display

3G. Pau NSF Mobility Workshop @ Rutgers, `07 http://www.vehicularlab.orghttp://www.vehicularlab.org

Trace Driven Mobility

Synthetic: Fine grain vehicular traces are generated by using a microscopic traffic simulator (i.e. CORSIM, TRANSIMS, etc)

Issues: Map details (Tiger Database, signals, buildings, etc) Activities (why cars move?) Amount of data (15 minutes = about 4GB)

Actual: Traces are collected from actual vehicle, and a model is inferred.

Issues: Type of mobility Generalization of the model

4G. Pau NSF Mobility Workshop @ Rutgers, `07 http://www.vehicularlab.orghttp://www.vehicularlab.org

What is next?

A Synthetic Mobility Model that is REALISTIC!

A density based Mobility model Integrated with TIGER/Naviteq:

validated through Transims Real measurements in several Italian Cities (Torino, Monza, etc)

Made available from September 1st at http://www.vehicularlab.org/

http://www.scalable-networks.com http://www.ismb.it/http://www.ismb.it/http://www.ismb.it/

CC--VVee TTCampus - Vehicular TestbedCampus - Vehicular Testbed

http://www.vehicularlab.org/

6G. Pau NSF Mobility Workshop @ Rutgers, `07 http://www.vehicularlab.orghttp://www.vehicularlab.org

Project Goals

Provide: A platform to support car-to-car experiments in various

traffic conditions and mobility patterns A shared virtualized environment to test new protocols

and applications Remote access to C-VeT through web interface

Allow: Collection of mobility traces and network statistics Experiments on a real vehicular network Full experimental Flexibility but no control on Mobility,

That is given.

7G. Pau NSF Mobility Workshop @ Rutgers, `07 http://www.vehicularlab.orghttp://www.vehicularlab.org

Hardware

Cappucino PC

GPS and other hardware similar to current Few High precision GPS installed in the Testbed.

8G. Pau NSF Mobility Workshop @ Rutgers, `07 http://www.vehicularlab.orghttp://www.vehicularlab.org

GPS HW RADIO MODEM 802.11 ADAPTER

API

GPS DRV

Ser

vice

s

AUTHORIZATION LAYER

LOCAL DB

VM 2 RM COMMUNICATION LAYER

App

. Lo

gic

VM 2 RM API VIRTUAL NETWORK ADAPTER

Virtual LAN

USER SPACE

Rea

l Mac

hine

Virtual Machine

MODEM DRV AdHoc IF Managed IF

Tran

sparen

t Access

9G. Pau NSF Mobility Workshop @ Rutgers, `07 http://www.vehicularlab.orghttp://www.vehicularlab.org

Contributions:

Cvet- Testbed Provides: Full access to the Node (yes you can re-compile your kernel) Mobility (10 Cars - 20 Bus) THANKS MARIO Mobility Trace Collections Emulation environment that exactly replicate the test-bed

Mobility Models: MobiDense a Model that generates Synthetic traces very accourate. Availabe at http://www.vehicularlab.org/ starting Sept 1st.

WE NEED 4 USERS starting SEPT 7.

The C-VeT testbed

The End

Thank You

12G. Pau NSF Mobility Workshop @ Rutgers, `07 http://www.vehicularlab.orghttp://www.vehicularlab.org

Example: Portland, Oregon

Some statistics: Cars: 16,000/3500 (tot/avg #) Area: downtown Portland (3 x 7km) Granularity 1sec Microscopic traffic simulation Data: US Bureau of Census Maps: Tiger/Portland Transportation Authority

14G. Pau NSF Mobility Workshop @ Rutgers, `07 http://www.vehicularlab.orghttp://www.vehicularlab.org

Mobility Models: (Portland, Oregon)

Different Mobility Models on the same area.

Substantial differences in Connectivity!

QuickTime™ and aH.264 decompressor

are needed to see this picture.

15G. Pau NSF Mobility Workshop @ Rutgers, `07 http://www.vehicularlab.orghttp://www.vehicularlab.org

Actual Traces

No real actual traces publically available yet!

Available Bus Aggregated Traces Campus pedestrian traces (Crawdad) Emergency Vehicle traces (available 2nd semester 07)