Instant Messaging Meets Video Conferencing: Studying the Performance of IM Video Calls

Grote, Laurenz; Kunze, Ike; Sander, Constantin; Wehrle, Klaus; Wu, Zhuojun; Lohmöller, Johannes; Kuhl, Christiane; Wehrle, Klaus; Jankowski, Joachim; Pennekamp, Jan; Belova, Anastasiia; Bergs, Thomas; Bodenbenner, Matthias; Bührig-Polaczek, Andreas; Dahlmanns, Markus; Kunze, Ike; Kröger, Moritz; Geisler, Sandra; Henze, Martin; Lütticke, Daniel; Montavon, Benjamin; Niemietz, Philipp; Ortjohann, Lucia; Rudack, Maximilian; Schmitt, Robert H.; Vroomen, Uwe; Wehrle, Klaus; Zeng, Michael; Rüppel, Adrian Karl; Ay, Muzaffer; Biernat, Benedikt; Kunze, Ike; Landwehr, Markus; Mann, Samuel; Pennekamp, Jan; Rabe, Pascal; Sanders, Mark P.; Scheurenberg, Dominik; Schiller, Sven; Xi, Tiandong; Abel, Dirk; Bergs, Thomas; Brecher, Christian; Reisgen, Uwe; Schmitt, Robert H.; Wehrle, Klaus; Kluge-Wilkes, Aline; Baier, Ralph; Gossen, Daniel; Kunze, Ike; Müller, Aleksandra; Shahidi, Amir; Wolfschläger, Dominik; Brecher, Christian; Corves, Burkhard; Hüsing, Mathias; Nitsch, Verena; Schmitt, Robert H.; Wehrle, Klaus; Lorz, Tobias; Jaeger, Johann; Selimaj, Antigona; Hacker, Immanuel; Ulbig, Andreas; Heckel, Jan-Peter; Becker, Christian; Dahlmanns, Markus; Fink, Ina Berenice; Wehrle, Klaus; Erichsen, Gerrit; Schindler, Michael; Luxenburger, Rainer; Lin, Guosong; Kus, Dominik; Wolsing, Konrad; Pennekamp, Jan; Wagner, Eric; Henze, Martin; Wehrle, Klaus; Pennekamp, Jan; Henze, Martin; Zinnen, Andreas; Lanze, Fabian; Wehrle, Klaus; Panchenko, Andriy; Glebke, René; Scheiper, Jan; Lenz, Stefan; Stoffers, Mirko; Wehrle, Klaus; Kunze, Ike; Trossen, Dirk; Wehrle, Klaus; Lohmöller, Johannes; Pennekamp, Jan; Matzutt, Roman; Wehrle, Klaus; Henze, Martin; Matzutt, Roman; Hiller, Jens; Mühmer, Erik; Ziegeldorf, Jan Henrik; van der Giet, Johannes; Wehrle, Klaus; Wolsing, Konrad; Saillard, Antoine; Bauer, Jan; Wagner, Eric; van Sloun, Christian; Fink, Ina Berenice; Schmidt, Mari; Wehrle, Klaus; Henze, Martin; Wolsing, Konrad; Thiemt, Lea; van Sloun, Christian; Wagner, Eric; Wehrle, Klaus; Henze, Martin; Sander, Constantin; Kunze, Ike; Wehrle, Klaus; Dahlmanns, Markus; Lohmöller, Johannes; Pennekamp, Jan; Bodenhausen, Jörn; Wehrle, Klaus; Henze, Martin; Kus, Dominik; Wagner, Eric; Pennekamp, Jan; Wolsing, Konrad; Fink, Ina Berenice; Dahlmanns, Markus; Wehrle, Klaus; Henze, Martin; Wagner, Eric; Serror, Martin; Wehrle, Klaus; Henze, Martin; Wagner, Eric; Matzutt, Roman; Pennekamp, Jan; Bader, Lennart; Bajelidze, Irakli; Wehrle, Klaus; Henze, Martin; Matzutt, Roman; Ahlrichs, Vincent; Pennekamp, Jan; Karwacik, Roman; Wehrle, Klaus

doi:10.23919/TMA58422.2023.10199019

Klaus Wehrle (Professor)

Klaus Wehrle, Dr.-Ing., Professor

RWTH Aachen University
Chair of Communication and Distributed Systems (COMSYS, Informatik 4)
Ahornstraße 55, building E3, office 9011
D-52074 Aachen / Germany

Phone: (+49) 241/80-21402, Fax: (+49) 241/80-22222
Email: wehrle <at> comsys.rwth-aachen.de

Email / Exam Policy

Exam Dates and Procedure:

Dates for oral exams are offered biweekly, every second Wednesday from 3pm till 6pm.

If you plan to do an oral exam, please follow this procedure:

reserve a slot in advance at the COMSYS office (office(at)comsys.rwth-aachen.de) with mentioning your study program and the planned lectures to be examined. We will confirm the combination subsequently. Please download our examination sheet, fill it in, and keep it till you exam date.
confirm the exam slot latest four weeks ahead of your exam at the COMSYS office (office(at)comsys.rwth-aachen.de). but be sure, that you are well prepared for the exam at that time.
if you plan to have an oral exam with two professors, please check first the availability of slots with the ComSys office and then find a joint date with the other examiner. Then book the final date at the ComSys office.
after reserving a slot please register at ZPA (Central Exam Registry, Zentrales Prüfungsamt) for the oral exam! As for all other exams, a registration with ZPA is mandatory before the exam date. Note that on our examination sheet you have to sign that you are registered with ZPA.
bring the examination sheet with you on the exam day, and hand it over to us at the beginning of the exam.

For teaching related emails, please use the following mail address: teaching (at) comsys.rwth-aachen.de If you are looking for a second advisor (Zweitgutachter) for your Bachelor's / Master's thesis, please consult the following website.

For scientific, project or other research/universiy-related purposes,
please use the following address: wehrle (at) comsys.rwth-aachen.de

CV

Klaus Wehrle is Professor of Computer Science and Head of the Communication and Distributed Systems Group (Informatik 4) at RWTH Aachen University,
He received his diploma (1999) and his doctorate (Dr.-Ing., 2002) from the University of Karlsruhe (now KIT), both with distinction. His doctoral thesis on flexible and scalable Quality of Service mechanisms for the next generation Internet was awarded the Doctoral Dissertation Prize of Südwestmetall and the FZI Doctoral Dissertation Prize (Research Center for Information Technology, FZI).

In 2002 and 2003, Klaus was a postdoctoral fellow at the International Computer Science Institute at the University of California at Berkeley (UCB).
In 2004, he received a DFG Emmy Noether (starting) grant to establish a junior research group on protocol engineering and distributed systems at the University of Tübingen.
In 2006 he joined RWTH Aachen University as an associate professor, since 2010 as a full professor. From 2019 to 2022 he will be acting head of the Department of Computer Science at RWTH Aachen University.

His research activities focus on (but are not limited to) the engineering of network protocols, (formal) methods for protocol engineering and network analysis, network simulation, reliable communication software, and all operating system issues of networking.
His research is mainly funded by the German Research Foundation (DFG), the European Research Council (through an ERC CoG and an ERC PoC grant), the EU, the German government (BMBF, BMWi), the state of North Rhine-Westphalia (NRW), and industrial partners.
From 2015 to 2023 he was coordinating the DFG Priority Program on Cyber-Physical Networking.
He is a member of IEEE, ACM, Sigcomm, GI (Gesellschaft für Informatik), VDE and GI/ITG-Fachgruppe KuVS.
He was/is a member of several evaluation boards of the Alexander-von-Humboldt Foundation and serves as an elected representative for communication systems at the German Research Foundation (DFG).

Publications

2023
•	Laurenz Grote, Ike Kunze, Constantin Sander, and Klaus Wehrle Instant Messaging Meets Video Conferencing: Studying the Performance of IM Video Calls Proceedings of the Network Traffic Measurement and Analysis Conference (TMA '23) Publisher: IFIP/IEEE, June 2023 DOI: 10.23919/TMA58422.2023.10199019 ISBN: 978-3-903176-58-4
•	Zhuojun Wu, Johannes Lohmöller, Christiane Kuhl, Klaus Wehrle, and Joachim Jankowski Use of Computation Ecosystems to Analyze the Kidney-Heart Crosstalk Circulation research, 132(8):1084-1100 April 2023 DOI: 10.1161/CIRCRESAHA.123.321765
•	Jan Pennekamp, Anastasiia Belova, Thomas Bergs, Matthias Bodenbenner, Andreas Bührig-Polaczek, Markus Dahlmanns, Ike Kunze, Moritz Kröger, Sandra Geisler, Martin Henze, Daniel Lütticke, Benjamin Montavon, Philipp Niemietz, Lucia Ortjohann, Maximilian Rudack, Robert H. Schmitt, Uwe Vroomen, Klaus Wehrle, and Michael Zeng Evolving the Digital Industrial Infrastructure for Production: Steps Taken and the Road Ahead Internet of Production: Fundamentals, Applications and Proceedings of Interdisciplinary Excellence Accelerator Series page 35-60. Publisher: Springer, February 2023 DOI: 10.1007/978-3-031-44497-5_2 ISBN: 978-3-031-44496-8
•	Adrian Karl Rüppel, Muzaffer Ay, Benedikt Biernat, Ike Kunze, Markus Landwehr, Samuel Mann, Jan Pennekamp, Pascal Rabe, Mark P. Sanders, Dominik Scheurenberg, Sven Schiller, Tiandong Xi, Dirk Abel, Thomas Bergs, Christian Brecher, Uwe Reisgen, Robert H. Schmitt, and Klaus Wehrle Model-Based Controlling Approaches for Manufacturing Processes Internet of Production: Fundamentals, Applications and Proceedings of Interdisciplinary Excellence Accelerator Series page 221-246. Publisher: Springer, February 2023 DOI: 10.1007/978-3-031-44497-5_7 ISBN: 978-3-031-44496-8
•	Aline Kluge-Wilkes, Ralph Baier, Daniel Gossen, Ike Kunze, Aleksandra Müller, Amir Shahidi, Dominik Wolfschläger, Christian Brecher, Burkhard Corves, Mathias Hüsing, Verena Nitsch, Robert H. Schmitt, and Klaus Wehrle Modular Control and Services to Operate Line-less Mobile Assembly Systems Internet of Production: Fundamentals, Applications and Proceedings of Interdisciplinary Excellence Accelerator Series page 303-328. Publisher: Springer, February 2023 DOI: 10.1007/978-3-031-44497-5_13 ISBN: 978-3-031-44496-8
•	Tobias Lorz, Johann Jaeger, Antigona Selimaj, Immanuel Hacker, Andreas Ulbig, Jan-Peter Heckel, Christian Becker, Markus Dahlmanns, Ina Berenice Fink, Klaus Wehrle, Gerrit Erichsen, Michael Schindler, Rainer Luxenburger, and Guosong Lin Interconnected grid protection systems - reference grid for testing an adaptive protection scheme 27th International Conference on Electricity Distribution (CIRED 2023), Rome, Italy, June 12-15, 2023, page 3286-3290. 2023 DOI: 10.1049/icp.2023.0864
2022
•	Dominik Kus, Konrad Wolsing, Jan Pennekamp, Eric Wagner, Martin Henze, and Klaus Wehrle Poster: Ensemble Learning for Industrial Intrusion Detection 38th Annual Computer Security Applications Conference (ACSAC '22), December 5-9, 2022, Austin, TX, USA Publisher: RWTH Aachen University, December 2022 DOI: 10.18154/RWTH-2022-10809
•	Jan Pennekamp, Martin Henze, Andreas Zinnen, Fabian Lanze, Klaus Wehrle, and Andriy Panchenko CUMUL & Co: High-Impact Artifacts for Website Fingerprinting Research Cybersecurity Artifacts Competition and Impact Award at 38th Annual Computer Security Applications Conference (ACSAC '22), December 5-9, 2022, Austin, TX, USA Publisher: ACSA, December 2022 DOI: 10.18154/RWTH-2022-10811 https://www.acsac.org/202...am/artifacts_competition/
•	René Glebke, Jan Scheiper, Stefan Lenz, Mirko Stoffers, and Klaus Wehrle Harnessing Cooperative Anycast Communication for Increased Resilience in Wireless Control Proceedings of the 61st IEEE Conference on Decision and Control (CDC 2022) Publisher: IEEE, December 2022 DOI: 10.1109/CDC51059.2022.9992864
•	Ike Kunze, Dirk Trossen, and Klaus Wehrle Evolving the End-to-End Transport Layer in Times of Emerging Computing In The Network (COIN) Proceedings of the 1st Workshop on New IP and Beyond, co-located with the 30th IEEE International Conference on Network Protocols November 2022 DOI: 10.1109/ICNP55882.2022.9940379
•	Johannes Lohmöller, Jan Pennekamp, Roman Matzutt, and Klaus Wehrle On the Need for Strong Sovereignty in Data Ecosystems Proceedings of the 1st International Workshop on Data Ecosystems (DEco '22), co-located with the 48th International Conference on Very Large Databases (VLDB '22), September 5-9, 2022, Sydney, Australia, Volume 3306, page 51-63. Publisher: CEUR Workshop Proceedings, September 2022
•	Martin Henze, Roman Matzutt, Jens Hiller, Erik Mühmer, Jan Henrik Ziegeldorf, Johannes van der Giet, and Klaus Wehrle Complying with Data Handling Requirements in Cloud Storage Systems IEEE Transactions on Cloud Computing, 10(3):1661-1674 September 2022 ISSN: 2168-7161 DOI: 10.1109/TCC.2020.3000336
•	Konrad Wolsing, Antoine Saillard, Jan Bauer, Eric Wagner, Christian van Sloun, Ina Berenice Fink, Mari Schmidt, Klaus Wehrle, and Martin Henze Network Attacks Against Marine Radar Systems: A Taxonomy, Simulation Environment, and Dataset 47th IEEE Conference on Local Computer Networks (LCN) Edmonton, Canada, September 26-29, 2022 Publisher: IEEE, September 2022 DOI: 10.1109/LCN53696.2022.9843801
•	Konrad Wolsing, Lea Thiemt, Christian van Sloun, Eric Wagner, Klaus Wehrle, and Martin Henze Can Industrial Intrusion Detection Be SIMPLE? Proceedings of the 27th European Symposium on Research in Computer Security (ESORICS '22), September 26-30, 2022, Copenhagen, Denmark Volume 978-3-031-17143-7, page 574--594. Publisher: Springer Nature Switzerland, September 2022 DOI: 10.1007/978-3-031-17143-7_28
•	Constantin Sander, Ike Kunze, and Klaus Wehrle Analyzing the Influence of Resource Prioritization on HTTP/3 HOL Blocking and Performance Proceedings of the Network Traffic Measurement and Analysis Conference (TMA '22) Publisher: IFIP, June 2022 ISBN: 978-3-903176-47-8 https://tma.ifip.org/2022...22/06/tma2022-paper28.pdf
•	Markus Dahlmanns, Johannes Lohmöller, Jan Pennekamp, Jörn Bodenhausen, Klaus Wehrle, and Martin Henze Missed Opportunities: Measuring the Untapped TLS Support in the Industrial Internet of Things Proceedings of the 2022 ACM Asia Conference on Computer and Communications Security (ASIACCS '22), May 30-June 3, 2022, Nagasaki, Japan, page 252-266. Publisher: ACM, May 2022 DOI: 10.1145/3488932.3497762 ISBN: 978-1-4503-9140-5/22/05
•	Dominik Kus, Eric Wagner, Jan Pennekamp, Konrad Wolsing, Ina Berenice Fink, Markus Dahlmanns, Klaus Wehrle, and Martin Henze A False Sense of Security? Revisiting the State of Machine Learning-Based Industrial Intrusion Detection Proceedings of the 8th ACM Cyber-Physical System Security Workshop (CPSS '22), co-located with the 17th ACM ASIA Conference on Computer and Communications Security (ASIACCS '22), May 30-June 3, 2022, Nagasaki, Japan, page 73-84. Publisher: ACM, May 2022 DOI: 10.1145/3494107.3522773 ISBN: 978-1-4503-9176-4/22/05
•	Eric Wagner, Martin Serror, Klaus Wehrle, and Martin Henze BP-MAC: Fast Authentication for Short Messages Proceedings of the 15th ACM Conference on Security and Privacy in Wireless and Mobile Networks (WiSec '22), page 201-206. Publisher: ACM, May 2022 DOI: 10.1145/3507657.3528554 ISBN: 978-1-4503-9216-7/22/05
•	Eric Wagner, Roman Matzutt, Jan Pennekamp, Lennart Bader, Irakli Bajelidze, Klaus Wehrle, and Martin Henze Scalable and Privacy-Focused Company-Centric Supply Chain Management Proceedings of the 2022 IEEE International Conference on Blockchain and Cryptocurrency (ICBC '22), May 2-5, 2022, Shanghai, China Publisher: IEEE, May 2022 DOI: 10.1109/ICBC54727.2022.9805503 ISBN: 978-1-6654-9538-7/22
•	Roman Matzutt, Vincent Ahlrichs, Jan Pennekamp, Roman Karwacik, and Klaus Wehrle A Moderation Framework for the Swift and Transparent Removal of Illicit Blockchain Content Proceedings of the 2022 IEEE International Conference on Blockchain and Cryptocurrency (ICBC '22), May 2-5, 2022, Shanghai, China Publisher: IEEE, May 2022 DOI: 10.1109/ICBC54727.2022.9805508 ISBN: 978-1-6654-9538-7/22

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A small note for potential applicants

We are always looking for enthusiastic talent to join our group. As such, we also welcome unsolicited applications.
If you are considering to apply for a position as a researcher or PhD student within the COMSYS team, please submit your meaningful application as pdf to phd[[at]]comsys.rwth-aachen.de.
For PhD applications, we would at least expect a short CV, a transcript of records, and a motivation letter that describes your research interests and your motivation to pursue your PhD with us.

You can find more information on doing a PhD with us on a dedicated subpage.