The DES-Testbed

The Distributed Embedded System (DES) research group studies real world wireless multi-hop networks (WMHN), the performance and applicability of abstract algorithms, as well as the common assumptions of simulations and analytical methods by testbed-based research.

The DES-Testbed is a hybrid wireless multi-transceiver testbed for long-term studies. It consists of a wireless mesh network (WMN) and a wireless sensor network (WSN). Our hybrid devices are called DES-Nodes. Currently, the testbed consists of 115 wireless mesh routers equipped with three or more IEEE 802.11a/b/g network adapters and the same number of wireless sensor nodes of type MSB-A2. In addition we have a virtualizer running several virtual machines (VMs) that recreate the testbed's topology and its lossy links. Using a custom kernel module in the VMs and a daemon on the virtualizer we can fully emulate the wireless medium.

The research focus of our group is on network architectures, protocols on ISO/OSI layers 2-7, and applications for next generation wireless networks. The DES-Testbed enables to compare simulation studies with real world experiments. To ease the specification, execution, and evaluation of  experiments in complex scenarios, we developed serveral frameworks to support our holistic research projects:

  • DES-SERT: Framework for underlay routing in user space
  • DES-TBMS: Automated experimentation and evaluation system
  • DES-Cript: A domain specific language to specify and run experiments
  • DES-LOFT: Framework for indoor localization and navigation
  • DES-Chan: Framework for distributed channel assignment
  • DES-Vis: Testbed visualization and monitoring

The DES-Testbed is an essential part of ongoing projects such as OPNEX, WISEBED, G-Mesh-Lab, and WiMeshLab.

Example visualization of one part of the DES-Testbed

To view the current state of the testbed use our DES-Vis application.

Best Paper Award

Posted January 3rd, 2012 by Dipl.-Inf. Felix Juraschek

We got the great news that our paper External Interference-Aware Distributed Channel Assignment in Wireless Mesh Networks won a Best Paper Award at the UBICOMM 2011, which was held in Lisbon last November. Yey!

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Advertisement Poster

Posted January 3rd, 2012 by Dipl.-Inform. Bastian Blywis

Everybody who has visited Felix's and my office may have already noticed the (old) advertisement poster at our door. You didn't? Have a look here.

  • 52 reads

Paper accepted at WCNC 2012

Posted December 9th, 2011 by Dipl.-Inform. Bastian Blywis

Our paper with the title Gossip Routing, Percolation, and Restart in Wireless Multi-Hop Networks has been accepted for presentation at the IEEE Wireless Communications and Networking Conference (WCNC 2012). You may have a look at our technical report that the paper is based upon.

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CFP available for NovaEnEv

Posted October 19th, 2011 by Dipl.-Inf. Felix Juraschek

Here is the CFP for NovaEnEv - The First International Workshop on Novel approaches to Energy Measurement and Evaluation in Wireless Networks ---- in conjunction with ICC 2012, June 10.-15., Ottawa, Canada. More information can be found on the NovaEnEv 2012 homepage.

  • 433 reads

Paper accepted at ICDCN 2012

Posted September 28th, 2011 by Dipl.-Inf. Felix Juraschek

Our joint work with OPNEX project partners from the Poznan University of Technology has been accepted at ICDCN 2012. The paper Multi-path OLSR Performance Analysis in a Large Testbed Environment presents the results of experiments on the DES-Testbed with the OLSR extension for multi-path support. 

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