The WiNGS laboratory hosts an outdoor, vehicular, wireless testbed with support for various wide-area experimentation efforts, called MadBed.

Currently, MadBed consists of two wireless nodes mounted on specific city-buses operated by the Madison Metro Transit System.
==== Testbed Pictures =====

|  {{https://pages.cs.wisc.edu/~ormont/WiNGS/TCP - Madison - Google Earth - 10-02-08.jpg?300|TCP Download Rate in Madison, WI on a Cellular 3G EVDO Network}} |
|  Google Earth Interface [[https://pages.cs.wisc.edu/~ormont/WiNGS/Tour of Madison, WI - TCP, Ping, Latency, Packet Loss - 10-01-08.kmz|interactive kmz]] [[https://pages.cs.wisc.edu/~ormont/WiNGS/Tour%20of%20Madison,%20WI%20-%20TCP,%20Ping,%20Latency,%20Packet%20Loss%20-%2010-01-08.mp4|mp4]]  |

|  {{https://pages.cs.wisc.edu/~ormont/WiNGS/madison_sigmetrics_demo_with_balloon_07-01-08.png?300|Google Maps Interface}} |
|  Google Maps Interface [[https://corral.wail.wisc.edu/cgi-bin/MobiCom2008/demo.pl|interactive live demo]]  |

|  {{https://pages.cs.wisc.edu/~ormont/WiNGS/Data Flow Diag 09-18-08.png?300|Data Flow in Infrastructure}} |
|  Infrastructure Data Flow  |




==== People ====


**Faculty:** 

[[http://www.cs.wisc.edu/~suman|Suman Banerjee]]

**Students:**

Justin Ormont

Jordan Walker

==== How to access ====

The testbed nodes are remotely accessible and programmable. Each node consists of a Intel Core-2 Duo 2.0 GHz laptop, with WiFi interfaces, a 3G EVDO rev. A interface, and a vehicular mobile router for providing Internet access to the bus passengers.
We also have a remote bus tracking interface that allows us to locate the position of the buses in real-time.

Access to this testbed is currently limited to UW-Madison faculty and students. Please email Prof. Suman Banerjee for access and account information.

==== Papers ====

- A City-Wide Vehicular Infrastructure for Wide-Area Wireless Experimentation.
Justin Ormont, Jordan Walker, Suman Banerjee, Sridhar Machiraju, Mukund Seshadri, Ashwin Sridharan.
WinTECH Workshop (co-located with ACM MobiCom), Burlingame, CA, September 2008.
[[http://www.cs.wisc.edu/~suman/pubs/vehicular-testbed.pdf|pdf]]

- A Measurement Study of a Commercial-grade Urban WiFi Mesh. 
Vladimir Brik, Shravan Rayanchu, Sayandeep Sen, Vivek Shrivastava, Suman Banerjee. 
Internet Measurement Conference, Greece, October 2008. 
[[http://www.cs.wisc.edu/~suman/pubs/mcb.pdf|pdf]]
==== Demos ====
- Continuous Monitoring of Wide-Area Wireless Networks: Data Collection and Visualization.
Justin Ormont, Jordan Walker, Suman Banerjee. MobiCom Conference & WinTECH Workshop (co-located with ACM MobiCom), Burlingame, CA, September 2008.  [[https://pages.cs.wisc.edu/~ormont/WiNGS/Tour of Madison, WI - TCP, Ping, Latency, Packet Loss - 10-01-08.mp4|mp4]] [[https://pages.cs.wisc.edu/~ormont/WiNGS/Tour of Madison, WI - TCP, Ping, Latency, Packet Loss - 10-01-08.kmz|google earth demo]] [[https://corral.wail.wisc.edu/cgi-bin/MobiCom2008/demo.pl|google maps demo]]

- Client-Assisted Monitoring of Large Scale Wireless Networks. Justin Ormont, Jordan Walker, Suman Banerjee. Sigmetrics Conference, Annapolis, MD, June 2008.