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ASSERT: System Level Wireless Networking Testbed

ASSERT: System Level Wireless Networking Testbed. Ehsan Nourbakhsh, Jeff Dix, Paul Johnson, Ryan Burchfield , S. Venkatesan, Neeraj Mittal, and Ravi Prakash Distributed Systems Laboratory The University of Texas at Dallas. DSLab @ UTD.

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ASSERT: System Level Wireless Networking Testbed

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  1. ASSERT: System Level Wireless Networking Testbed Ehsan Nourbakhsh, Jeff Dix, Paul Johnson, Ryan Burchfield, S. Venkatesan, Neeraj Mittal, and Ravi Prakash Distributed Systems Laboratory The University of Texas at Dallas

  2. DSLab @ UTD • Research in wireless networking and distributed systems • MAC layer protocols • Autoconfiguration • Routing • Transport layer • MANET/VANET/SensorNets • Algorithm design, simulations, implementation 5/19/2010

  3. Goals of Wireless Networking Experiments • Accuracy • Controllability • Mobility • Repeatability • Cost effectiveness • Data collection • Resource sharing • Multi-nodal capability • Scalability 5/19/2010

  4. Wireless Experiment Fidelity 5/19/2010

  5. Testbed:Site Conceptual View 5/19/2010

  6. Testbed:Site Hardware View 5/19/2010

  7. Example Interconnection 5/19/2010

  8. Digital Board 5/19/2010

  9. RF Board 5/19/2010

  10. Assembled Testbed 5/19/2010

  11. Testbed Site 5/19/2010

  12. Testbed:Software Architecture 5/19/2010

  13. Software Architecture • Diagnostics • Test links and sites between experiments. • Update the View of test-bed. • User Interface • Show a GUI to user for designing and initiating experiments. • Web based. • Stateless. 5/19/2010

  14. Software Architecture(cont.) • Topology Mapper • Map the request of user to currently available sites. • Instruct how to change attenuation levels to emulate different scenarios. • Reservation • Reserve available sites for specific experiment. • Inform control center of expired sites. • Handle cancellations. 5/19/2010

  15. Software Architecture(cont.) • Attenuator Control • Set attenuation value on sites • Handle requests to set attenuation values • UUT Control • Communicate with UUT to start and end experiments. 5/19/2010

  16. Software Architecture(cont.) • System State • Database of system condition • Sites • Links • Experiments • Logging • Log software messages • Internal to test-bed control 5/19/2010

  17. Experiment Setup Testbed Super-Graph Testbed Super-Graph δ δ δ ∞ ∞ ∞ ∞ ∞ ∞ ∞ ∞ δ δ δ δ … … … … δ δ δ ∞ ∞ Experiment Desired Topology … … 5/19/2010

  18. Mobility Base Station Atten. UUT/CPE Atten. 5/19/2010

  19. Conclusion • Platform for: • Repeatable experiments • Mobility experiments • Protocol stress testing • Heterogeneous nodes • Scalable Architecture • No replacement for field-tests • Future work • Multi-path effects • MIMO • Greater range of frequency bands • External users Information: http://dslab.utdallas.edu Email: ryanb@utdallas.edu 5/19/2010

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