Publications

Integrating sensor measurements through CM cards as an OMF service

Authors: Vasilis Maglogiannis, Dimitris Giatsios, Giannis Kazdaridis, Thanasis Korakis, Iordanis Koutsopoulos and Leandros Tassiulas

Conference: TridentCom 2012, Thessaloniki, Greece, June 2012

Abstract: 

Several OMF-based testbeds are using Chassis Manager (CM) cards for autonomously controlling and monitoring the status of nodes. CM cards are typically microcontroller boards and can be connected to different kinds of modules, including sensor modules. The NITOS testbed, which has recently adopted the use of CM cards, features various types of sensors connected to them. Measurements can be easily obtained through dedicated web services running on the microcontroller, through a network interface. This demo describes the implementation of an OMF service on top of these CM card measurement web services. This service can either be requested directly by an experimenter who wishes to obtain a specific sensor measurement, or it can be utilized in OMF experiment scripts.

Download paper: Integrating sensor measurements through CM cards as an OMF service.pdf

Towards Maximizing Wireless Testbed Utilization using Spectrum Slicing

Authors: Angelos-Christos Anadiotis, Apostolos Apostolaras, Dimitris Syrivelis, Apostolos Apostolaras, Thanasis Korakis, Leandros Tassiulas, Luis Rodriguez, Ivan Seskar, Maximillian Ott

Conference: TridentCom 2010, Berlin, Germany, May 2010

As experimentation becomes one of the de-facto approaches for benchmarking, researchers are turning to testbeds to test, review and verify their work. As a result, several research laboratories build wireless testbeds, in order to offer their researchers a real environment to test their algorithms. As testbeds become more and more popular, the need for a managerial tool that will not only provide a unified way for defining and executing an experiment and collecting experimental results, but that will also serve as many users as possible maximizing the utilization of its resources, is growing. In this spirit, we propose a scheme that exploits wireless testbeds functionality by introducing spectrum slicing of the testbed resources. This scheme can be incorporated inside OMF, an already existing wireless testbeds managerial framework, which is widely used by many researchers.

Download paper: tridentcom2010_max_testbed_utilization

Experimenting with P2P traffic optimization for Wireless Mesh Networks in a federated OMF-PlanetLab

Authors: Giovanni Di Stasi, Roberto Bifulco, Francesco Paolo D'Elia, Stefano Avallone, Roberto Canonico, Apostolos Apostolaras, Nikolaos Giallelis, Thanasis Korakis and Leandros Tassiulas

Conference: IEEE WCNC, Cancun, Mexico, March 2011

The ultimate success of the Wireless Mesh Network paradigm (WMN) in large scale deployments depends on the ability to test it in real world scenarios. A typical application scenario which is worth to be investigated in such a context is peer-to-peer traffic management. The creation of large scale testbeds for evaluating wireless mesh technologies and protocols, and for testing their ability to support real world applications in realistic environments, is then a crucial step. In this paper we present how we integrated an OMF-based wireless testbed in the planetary-scale PlanetLab testbed, making it possible for PlanetLab users to run experiments spanning on both PlanetLab and on nodes belonging to the OMF-based wireless testbed. In order to demonstrate the usefulness of such an integrated scenario, we tested on it an innovative peer-to-peer traffic optimization technique for the BitTorrent file sharing application. The possibility of running this kind of experiments highlighted several real-world issues which could be investigated thanks to our hybrid experimental scenario.

Download paper: wcnc_experimenting_with_p2p

Interconnection of geographically distributed wireless mesh testbeds

Authors: Giovanni Di Stasi, Roberto Bifulco, Stefano Avallone, Roberto Canonico, Apostolos Apostolaras, Nikolaos Giallelis, Thanasis Korakis and Leandros Tassiulas

Journal: Elsevier, AdHoc Networks

Creating large scale testbeds for evaluating wireless mesh technologies and protocols, and for testing their ability to support real world applications in realistic environments, is a crucial step towards the ultimate success of the WMN paradigm. In this paper we suggest the hierarchical federation of a planetary scale infrastructure, such as PlanetLab, with a number of local OMF-based wireless testbeds as a viable approach towards this goal. Along such direction, we present an architectural model for integrating at the technical level these two kinds of infrastructures and our initial implementation of such a model. We also present some test case experiments we run on our initial implementation of the integrated architecture, to illustrate how an experiment on peer-to-peer traffic optimization can be executed by combining both wireless nodes of a OMF based testbed and PlanetLab nodes located across Europe. The possibility of running this kind of experiments in such a hybrid experimental scenario highlighted several real-world issues that are worth to be further investigated.

Keywords: Wireless Mesh Network Testbeds ,Large Scale Research Infrastructures, PlanetLab, Federation.

Download journal: AdHoc-SI-CINI-CERTH.pdf