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:
Example visualization of one part of the DES-Testbed
To view the current state of the testbed use our DES-Vis application.
A part of the DES-Testbed team and partially the DES-Testbed moves to the University of Münster. Prof. Günes starts a new working group Communication and Networked Systems (ComSys) at the University of Münster.
If you have any questions about the relocation and re-start of the testbed do not hesitate to contact us.
Our paper Energy-Aware Ant Routing in Wireless Multi-Hop Networks has been accepted at IEEE ICC 2014, which will be held in Sydney, Australia this June.
After several sessions of cleaning up the code of the channel assignment framework DES-Chan and the algorithms based on the framework, we finally published the source code at github. You can find the code at github in our des-testbed repositories.
The presentation of our posters at INFOCOM in Torino was a big success with a lot of interesting discussions. Our free RIOT t-shirts gained a lot of attraction, too.