Distributed Systems Group

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Alexander Tessmer, M. Sc.

Alexander Tessmer
University of Osnabrück
Institute of Computer Science
Friedrich-Janssen-Str. 1
49076 Osnabrück, Germany

Research Interests / Projects

  • Distributed Systems
  • Mobility Modeling
  • Wireless Sensor Networks
  • Time Synchronization
  • Internet of Things
  • Optocubes



  • Alexander Tessmer, Nils Aschenbruck
    "Using Dynamic Time Warping to Calibrate Low-Cost Soil Moisture Sensors"
    accepted for the 5th international Workshop on Smart Living with IoT, Cloud, and Edge Computing
    in conjunction with the 20th IEEE International Conference on Mobile Ad-Hoc and Smart Systems
    SLICE@MASS, Toronto, Canada, Sep. 25-27, 2023.
  • Cornelius Wolff, Alexander Tessmer, Nils Aschenbruck
    "A New Approach on Estimating Germany's Mobile Broadband Coverage based on Crowdsourced Data"
    Proc. of the 27. VDE/ITG-Fachtagung Mobilkommunikation
    ITG-Fb. 311, Osnabrück, Germany, May 10-11, 2023, [pdf].


  • Alexander Tessmer, Bjoern Bourdon, Yannic Toschke, Mirco Imlau, Nils Aschenbruck
    "Enhancing an Open Source IoT System for Vertical System Integration in Photonics"
    Proc. of the 8th IEEE World Forum on Internet of Things
    WF-IoT, Yokohama, Japan, Oct.26 - Nov.11, 2022, [pdf].
  • Yannic Toschke, Janet Lusmoeller, Lars Otte, Johann Schmidt, Svenja Meyer, Alexander Tessmer, Christian Brockmann, Milena Ahuis, Emma Hüer, Christian Kirberger, Dirk Berben
    "Distributed LoRa based CO2 monitoring network - A standalone open source system for contagion prevention by controlled ventilation"
    SI: Special Issue: COVID-19 Medical Hardware, HardwareX, Jan. 2022, [pdf].


  • Alexander Tessmer, Thomas Hänel, Nils Aschenbruck
    "On the Impact of Geographic Restrictions on Contact Metrics in Opportunistic Networks"
    Proc. of the 45th IEEE LCN Symposium on Emerging Topics in Networking
    LCN, virtually hosted in Sydney, Australia, Nov. 16-19, 2020, [pdf].
  • Jan Bauer, Yannic Toschke, Alexander Tessmer, Björn Bourdon, Nils Aschenbruck, Mirco Imlau
    "An Open Source IoT Framework for a Distributed Modular Low-Cost Laser-Based Sensing Platform"
    Proc. of IEEE Sensors, Oct. 25-28, 2020, [pdf].
  • Alexander Tessmer
    "Auswirkungen geografischer Restriktionen auf Kontaktmetriken in opportunistischen Netzen"
    Master Thesis, University of Osnabrück, April 2020.


WT 2022/2023

ST 2022

WT 2021/2022

ST 2021

WT 2020/2021