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

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:

  1. 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.
  2. 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.
  3. 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.
  4. 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.
  5. 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



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).




Leo Petrak, Olaf Landsiedel, and Klaus Wehrle
Towards Realistic Strategy-Based Mobility Models for Ad Hoc Communication
Proceedings of the 2005 Conference on Software for Communication Systems and Computer Networks
Olaf Landsiedel, Katharina Lehmann, and Klaus Wehrle
T-DHT: Topology-Based Distributed Hash Tables
Proceedings of Fifth International IEEE Conference on Peer-to-Peer-Computing, Konstanz, Germany
Project AEON
Proceedings of the 4th GI/ITG KuVS Fachgespräch "Wireless Sensor Networks", Techical Report No. 481, page 72-76.
Zürich, CH
Proceedings of the First ACM International Workshop on Multimedia Service Composition at International Multimedia Conference, page 31-36.
Publisher: ACM, New York, NY, USA
ISBN: 1-59593-245-3
Dilip Joseph, Jayanthkumar Kannan, Ayumu Kubota, Ion Stoica, and Klaus Wehrle
Document number: UCB/CSD-005/1397
University of California at Berkeley, UCB, Berkeley, USA


Simon Rieche, Leo Petrak, and Klaus Wehrle
Proceedings of LCN 2004 – 29th IEEE Conference on Local Computer Networks , page 15-23.
Publisher: IEEE Press,
November 2004
ISBN: 0-7695-2260-2
Reliability of Data in Structured Peer-to-Peer Systems
Proceedings of HOT-P2P '04: Hot Topics in Peer-to-Peer Computing at 12th Annual Meeting of the IEEE International Symposium on Modeling, Analysis, and Simulation of Computer and Telecommunication Systems (MASCOTS), page 108-113.
October 2004
Simon Rieche, Leo Petrak, and Klaus Wehrle
Comparison of Load Balancing Algorithms for Structured Peer-to-Peer Systems
Proceedings of Workshop on Algorithms and Protocols for Efficient Peer-to-Peer Applications (PEPPA), GI-Jahrestagung Informatik 2004 Volume 51of LNI
Publisher: GI. LNI, Bonn, Germany
September 2004
Tobias Heer, Heiko Niedermayer, Leo Petrak, Simon Rieche, and Klaus Wehrle
On the Use of Structured P2P Indexing Mechanisms in Mobile Ad-Hoc Scenarios
Proceedings of Workshop on Algorithms and Protocols for Efficient Peer-to-Peer Applications (PEPPA), GI-Jahrestagung Informatik 2004, Bonn, Germany Volume 51of LNI, page 239-244.
Publisher: GI. LNI, Bonn, Germany
September 2004
ISBN: 3-88579-380-6
Ralf Steinmetz and Klaus Wehrle
Peer-to-Peer-Networking & -Computing
Informatik-Spektrum, 27(1):51-54
Integrierte Konstruktionsmethoden für flexible Protokolle in ubiquitären Kommunikationssystemen
Proceedings of the GI/ITG KuVS Fachgespräch Systemsoftware für Pervasive Computing
Stuttgart, Germany
Content-oriented Bridging of Today's Internet Heterogeneity
Service Management and Self-Organization in IP-based Networksof Dagstuhl Seminar Proceedings
Publisher: Internationales Begegnungs- und Forschungszentrum fuer Informatik (IBFI), Schloss Dagstuhl, Germany,
Karthik Lakshminarayanan, Ion Stoica, and Klaus Wehrle
Proceedings of ACM Multimedia 2004
New York, USA
Jayanthkumar Kannan, Ayumu Kubota, Karthik Lakshminarayanan, Ion Stoica, and Klaus Wehrle
Technical Report
Document number: UCB/CSD-04-1342
University of California at Berkeley, UCB, Berkeley, USA
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A small note for potential applicants

A small note for potential applicants

Please note:

The COMSYS Team is a very open-minded and technology-oriented research group. But we are receiving dozens of (mostly unserious spam-)applications per week. To focus on serious applications, we only accept applications sent in by non-electronic mail. Email applications will neither be processed, nor answered, nor accepted.

Email applications of any kind will be deleted immediately!

If you are seriously considering to apply for a position (researcher, PhD student, teaching assistant, internship, student research assistant) within the COMSYS Team, please spend the small amount of postage for sending your application by postal mail -- you will definitely get an answer. Many thanks for your cooperation!

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