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Addressing Scalability in a Laboratory-Based Multihop Wireless Testbed

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Abstract

The MeshTest wireless testbed allows users to conduct repeatable mobile experiments with real radio hardware under controlled conditions. The testbed uses shielded enclosures and a matrix switch of programmable attenuators to produce multi-hop scenarios and simulate the effects of mobility and fading. Previous work focused on the theory and performance of a single-switch testbed. Connecting more than 16 nodes requires multiple matrix switches and introduces theoretical and practical challenges. In this paper we examine, in theoretical and practical terms, two potential designs for a scalable version of the MeshTest testbed, and identify one design that seems to provide the most promising test environment. For this type of multi-switch system, performance improves a great deal if nodes that are close together in the physical scenario are also connected to the same RF switch. Rather than restrict the mobility of the nodes, we show how software virtualization can be used to migrate running node images from one switch to another to maintain the proximity of the nodes attached to each RF switch and improve testbed performance. We also describe our new testbed control architecture, that is an important part of making MeshTest scalable.

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References

  1. Azimuth Systems (2009) Azimuth Systems homepage. http://www.azimuthsystems.com/

  2. Bettstetter C, Resta G, Santi P (2003) The node distribution of the random waypoint mobility model for wireless ad hoc networks. IEEE Trans Mob Comput 2(3):257–269

    Article  Google Scholar 

  3. Bhanage G, Seskar I, Zhang Y, Raychaudhuri D (2008) Evaluation Of OpenVZ based wireless testbed virtualization. Tech. rep. WINLAB-TR-331, Rutgers University

  4. Bhanage GD, Zhang Y, Seskar I (2008) On topology creation for an indoor wireless grid. In: WiNTECH ’08, ACM, New York, pp. 81–88. doi:10.1145/1410077.1410093

  5. Clancy TC, Walker BD (2007) Meshtest: laboratory-based wireless testbed for large topologies. In: IEEE TridentCom, pp 1–6

  6. Carnegie Mellon University (2008) Carnegie Mellon University wireless emulator. http://www.cs.cmu.edu/~emulator/

  7. De P, Raniwala A, Sharma S, Chiueh T (2005) MiNT: a miniaturized network testbed for mobile wireless research. In: IEEE INFOCOM

  8. De P, Raniwala A, Sharma S, Chiueh T (2005) Design considerations for a multihop wireless network testbed. In: IEEE Communications Magazine

  9. Gilbert JR, Miller GL, Teng SH (1995) Geometric mesh partitioning: implementation and experiments. In: Proceedings of international parallel processing symposium, pp 418–427

  10. Kaul SK, Gruteser M, Seskar I (2006) Creating wireless multi-hop topologies on space-constrained indoor testbeds through noise injection. In: TRIDENTCOM

  11. KVM (2009) Kernel based virtual machine. http://www.linux-kvm.org/

  12. Kolyshkin K (2006) Virtualization in Linux. http://download.openvz.org/doc/openvz-intro.pdf

  13. The Network Simulator ns-2 (v2.1b8a) (2001) http://www.isi.edu/nsnam/ns/

  14. OpenVZ (2009) OpenVZ Wiki. http://wiki.openvz.org/

  15. Paine N (2009) Realizing a pervasive computing testbed. Slides from UT-Austin WNCG DTN Workshop

  16. Raychaudhuri D, Seskar I, Ott M, Ganu S, Ramachandran K, Kremo H, Siracusa R, Liu H, Singh M (2005) Overview of the ORBIT radio grid testbed for evaluation of next-generation wireless network protocols. In: IEEE WCNC

  17. Russell S, Norvig P (2002) Artificial intelligence: a modern approach. Prentice Hall, Englewood Cliffs

    Google Scholar 

  18. Sanghani S, Brown TX, Bhandare S, Doshi S (2003) EWANT: the emulated wireless ad hoc network testbed. In: IEEE WCNC

  19. Schulman A, Levin D, Spring N (2008) On the fidelity of 802.11 packet traces. In: PAM 2008, 9th passive and active measurement conference. Cleveland, Ohio, pp 132–141

  20. Seligman M, Walker BD, Clancy TC (2008) Delay-tolerant network experiments on the meshtest wireless testbed. In: CHANTS ’08: Proceedings of the third ACM workshop on challenged networks. ACM, New York, pp 49–56

    Chapter  Google Scholar 

  21. Skehill R, Scully P, McGrath S (2007) Characteristics, results and findings of ieee 802.11 in an rf isolated testbed. In: Personal, indoor and mobile radio communications, PIMRC 2007, pp 1–5

  22. Su Y, Gross T (2008) Validation of a miniaturized wireless network testbed. In: WiNTECH ’08. ACM, New York, pp 25–32. doi:10.1145/1410077.1410084

    Chapter  Google Scholar 

  23. Walker B, Clancy TC (2008) A quantitative evaluation of the meshtest wireless testbed. In: TridentCom

  24. Walker B, Seastrom J (2009) Addressing scalability in a laboratory-based multihop wireless testbed. In: TRIDENTCOM

  25. Xen (2009) The official Xen Project site. http://www.xen.org/

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Authors and Affiliations

  1. Laboratory for Telecommunications Sciences, College Park, MD, USA

    Brenton Walker

  2. Computer Science Department, University of Maryland-College Park, College Park, MD, USA

    Jessica Seastrom

  3. Electrical and Computer Engineering Department, University of Maryland-College Park, College Park, MD, USA

    Ginnah Lee & Kun Lin

Authors
  1. Brenton Walker
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  2. Jessica Seastrom
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  3. Ginnah Lee
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  4. Kun Lin
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Corresponding author

Correspondence to Brenton Walker.

Additional information

This work was funded by the Laboratory for Telecommunications Sciences, US Department of Defense. The opinions expressed in this paper reflect those of the authors, and do not necessarily represent those of the Department of Defense or US Federal Government.

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Walker, B., Seastrom, J., Lee, G. et al. Addressing Scalability in a Laboratory-Based Multihop Wireless Testbed. Mobile Netw Appl 15, 435–445 (2010). https://doi.org/10.1007/s11036-009-0203-4

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  • DOI: https://doi.org/10.1007/s11036-009-0203-4

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