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OPTraCom - Opportunistic Public Transport Communication

Motivation

An area wide collection of different sensor data within metropolitan areas opens up a large application range. One example is air pollution that can be measured in fine-granular way, in order to inform residents more comprehensively and optimize the traffic management in the city area. Public means of transport operate regularly and approximately in the entire city. Thus, they well suited for this purpose. They cannot only collect environmental data, but also seize operational data from technical equipment along the roadside. Presently, an efficient networking to for the prompt evaluation of the collected data cannot be realized with private or cellular mobile radio solutions at reasonable costs. In this cooperative project between the BBR Verkehrstechnik and the Institute of Operating Systems and Computer Networks at TU Braunschweig we plan to develop a novel disruption-tolerant communication system on basis of WLAN. Thereby, vehicles store the collected data, exchange them among themselves and this way transport it gradually to the receiver. An area-wide infrastructure becomes is not needed. The main research aspects within this project are efficient strategies for routing and data dissemination within the network. The efficiency of the system will be evaluated with the help of real-world experiments in the city of Braunschweig. The results will help us to examine the system's potential for further applications.

Main Research Topics

The main research topics we deal with in the context of Optracom are in the following fields:

Routing mechanisms for DTNs
Information dissemination in public transportation networks on the basis of DTNs
Field tests for analyzing the DTN performance in real environments

Publications

Further publications are in preparation and under review. For further information we also provide publications in which we established the basis for the Optracom project.

Johannes Morgenroth and Lars Wolf: Sicherheit in DTN-basierten OPNV-Netzen, in Essener Workshop zur Netzsicherheit 2011, Universität Duisburg-Essen, Institut für Experimentelle Mathematik der Universität Duisburg-Essen, April 2011 (EWNS2011, BibTeX, Slides)
Tobias Pögel: öPNV-optimiertes Routing in unterbrechungstoleranten Netzen, in PIK - Praxis der Informationsverarbeitung und Kommunikation, Vol. 34, Germany, 2011 (PIK2011, BibTeX)
Sebastian Schildt, Johannes Morgenroth, Wolf-Bastian Pöttner and Lars Wolf: IBR-DTN: A lightweight, modular and highly portable Bundle Protocol implementation, in Electronic Communications of the EASST, Vol. 37, pages 1-11, January 2011 (IBR-DTN-WASA, BibTeX, Slides)
Tobias Pögel: Optimized DTN-Routing for Urban Public Transport Systems, in 17th GI/ITG Conference on Communication in Distributed Systems (KiVS 2011) , OpenAccess Series in Informatics (OASIcs), Dagstuhl, Germany, pages 227-232, Schloss Dagstuhl-Leibniz-Zentrum fuer Informatik, 2011 (RUTS-KiVS11, DOI, BibTeX)
Michael Doering, Tobias Pögel and Lars Wolf: Delay Tolerant Communication in Intelligent Transportation Systems, in 8th International Workshop on Intelligent Transportation (WIT), Hamburg, Germany, March 2011 (WIT2011, BibTeX)
Michael Doering, Wolf-Bastian Pöttner, Tobias Pögel and Lars Wolf: Impact of Radio Range on Contact Characteristics in Bus-based Delay Tolerant Networks, in Eighth International Conference on Wireless On-Demand Network Systems and Services (WONS 2011), Bardonecchia, Italy, pages 195-202, January 2011 (CONTACTS-WONS11, DOI, BibTeX)
Lars C Wolf, Michael Doering and Tobias Pögel: Ausnutzung der Mobilität für das Routing in opportunistischen Kommunikationssystemen, in VDE Kongress 2010 - E-Mobility, Congress Center Leipzig, January 2010 (VDE10, BibTeX)
Michael Doering, Tobias Pögel, Wolf-Bastian Pöttner and Lars C Wolf: A New Mobility Trace for Realistic Large-Scale Simulation of Bus-based DTNs, in ACM MobiCom 2010 Workshop on Challenged Networks (CHANTS 2010), Chicago, USA, September 2010 (BUSTRACE10, DOI, BibTeX)
Michael Doering, Tobias Pögel and Lars C Wolf: DTN Routing in Urban Public Transport Systems, in ACM MobiCom 2010 Workshop on Challenged Networks (CHANTS 2010), Chicago, USA, September 2010 (RUTS10, DOI, BibTeX)
Johannes Morgenroth, Sebastian Schildt and Lars C Wolf: HYDRA: Virtualized Distributed Testbed for DTN Simulations, in The Fifth ACM International Workshop on Wireless Network Testbeds, Experimental Evaluation and Characterization (WiNTECH 2010) in conjunction with ACM MobiCom 2010 (WiNTECH'10), Chicago, USA, September 2010 (HYDRA, BibTeX)
Michael Doering, Sven Lahde, Johannes Morgenroth and Lars Wolf: IBR-DTN: an efficient implementation for embedded systems, in Proceedings of the Third Workshop on Challenged Networks, CHANTS 2008, San Francisco, California, USA, September 15, 2008, pages 117-120, September 2008 (DLMW08, BibTeX)
Sven Lahde, Michael Doering, Wolf-Bastian Pöttner, Gerrit Lammert and Lars Wolf: A practical analysis of communication characteristics for mobile and distributed pollution measurements on the road, in Wireless Communications and Mobile Computing, Vol. 7, No. 10, pages 1209-1218, John Wiley & Sons, Ltd., December 2007 (LDP+07, DOI, BibTeX)
Sven Lahde, Michael Doering, Wolf-Bastian Pöttner and Gerrit Lammert: Mobile and Distributed Measurement of Air Pollution in Metropolitan Areas Using Car2X Techniques, in Proceedings of 3nd Symposium on Informationssysteme für mobile Anwendungen (IMA), Braunschweig, October 2006 (LDP+06, BibTeX)

Press releases, links and downloads

Video of the DTN-Demonstrator

Project members

Name	EMail	Phone	Room
Prof. Dr.-Ing. Lars Wolf	wolf[[at]]ibr.cs.tu-bs.de	+49-531-3913288	138
Dr. Michael Doering	mdoering[[at]]ibr.cs.tu-bs.de
Dr. Johannes Morgenroth	morgenroth[[at]]ibr.cs.tu-bs.de
BBR Verkehrstechnik

Theses

Title	Type	Supervisor	Status
Entwurf und Implementierung eines Werkzeugs zur Erzeugung von Abdeckungskarten	Bachelor Thesis	Dr. Michael Doering	finished ~2009
Entwurf und Implementierung eines DTN-basierten Systems zum Update von Fahrgastinformationsanzeigern	Bachelor Thesis	Dr. Michael Doering, Dr. Sven Lahde	finished ~2009
Entwurf und Implementierung eines intelligenten (De-)Fragmentierungsverfahrens für replizierende DTN-Routingprotokolle	Studienarbeit	Dr. Michael Doering	finished ~2010
Analyse der Sicherheitsanforderung und Security-Hardening eines Kommunikationssystems für Fahrzeugnetze	Studienarbeit	Dr. Michael Doering	finished ~2010
Konzeption und Durchführung von Penetrationstests für Embedded-Systeme in Fahrzeugnetzen	Diploma Thesis	Dr. Michael Doering	finished ~2010
Entwurf und Analyse eines DTN-Routingverfahrens für ÖPNV-Netze	Diploma Thesis	Dr. Michael Doering, Dr. Sven Lahde	finished ~2009
Entwurf und Implementierung eines Verwaltungsprogramms für Zug-Erkennungssysteme	Project Thesis	Dr. Michael Doering	finished ~2010
Design and Implementation of Utility Functions for Routing in Vehicular Disruption Tolerant Networks	Bachelor Thesis	Dr. Michael Doering	finished ~2011
Design und Implementierung eines Weckmoduls zur Steigerung der Energieeffizienz solarbetriebener WLAN-Accesspoints	Studienarbeit	Dr. Michael Doering	finished ~2010
Entwicklung einer Anwendungsschnittstelle zur Anbindung moderner Programmiersprachen an die IBR-DTN Implementierung	Bachelor Thesis	Dr. Johannes Morgenroth	finished ~2010
Entwicklung einer Erweitungsschnittstelle zur Anbindung externer Module an die IBR-DTN Implementierung	Bachelor Thesis	Dr. Johannes Morgenroth	finished ~2010
Sicherheitsaspekte in unterbrechungstoleranten Netzen basierend auf dem Bundle Protocol	Bachelor Thesis	Dr. Johannes Morgenroth, Dr. Sebastian Schildt	finished ~2010
Entwurf und Implementierung von Sicherheitsmechanismen für IBR-DTN	Bachelor Thesis	Dr. Johannes Morgenroth	finished ~2010
Entwicklung eines persistenten Speichers für IBR-DTN	Bachelor Thesis	Dr. Johannes Morgenroth	finished ~2010
Design and Implementation of Dynamic Routing Updates for Vehicular Disruption Tolerant Networks	Master Thesis	Dr. Michael Doering	finished ~2011

HiWi Jobs

Title	Type	Supervisor	Status
Mehrere Hiwi-Stellen im Bereich Delay Tolerant Networking	HiWi Job	Dr. Michael Doering	finished
Implementierung eines perfekten DTN-Routers	HiWi Job	Dr. Michael Doering	finished ~2010

Funding

This project is funded by the European Community within the European Regional Development Fund (ERDF).

Further Information

For further information please contact Dr. Michael Doering, Dr. Johannes Morgenroth or Prof. Dr.-Ing. Lars Wolf.