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).




Berlin, Germany
July 2008
Proc. of 15th International Conference on Telecommunication (ICT), St. Petersburg, Russian Federation Volume 1 , page 1-7.
Publisher: IEEE, Washington, DC, USA
June 2008
ISBN: 978-1-4244-2035-3
Alexander Becher, Olaf Landsiedel, Georg Kunz, and Klaus Wehrle
Proceedings of Fifth Workshop on Embedded Networked Sensors (Hot EmNets'08), Charlottesville, VA, USA, page 1--5.
Publisher: ACM Press, New York, NY, USA
June 2008
ISBN: 978-1-60558-209-2
Simon Rieche, Klaus Wehrle, Marc Fouquet, Heiko Niedermayer, Timo Teifel, and Georg Carle
Proceedings of 1st International Workshop on Massively Multiuser Virtual Environments at IEEE Virtual Reality 2008 (MMVE 2008) , page 9-13.
March 2008
RWTH Aachen University - Distributed Systems Group
Synchronized network emulation: matching prototypes with complex simulations
SIGMETRICS Performance Evaluation Review, 36(2):58-63
ISSN: 0163-5999
Simon Rieche, Klaus Wehrle, Marc Fouquet, Heiko Niedermayer, Timo Teifel, and Georg Carle
Clustering Players for Load Balancing in Virtual Worlds
International Journal of Advanced Media and Communication (IJAMC), 2(4):351-363 RWTH Aachen University - Distributed Systems Group
ISSN: 1462-4613
Proceedings of the 7th ACM International Conference on Information Processing in Sensor Networks (IPSN 2008), St. Louis, MO, USA, page 344-354.
Publisher: IEEE Computer Society, Washington, DC, USA
ISBN: 978-0-7695-3157-1
Technical Report
Document number: AIB 2008-16
RWTH Aachen University, Ahornstr. 55, Aachen, Germany
Tobias Heer, Miika Komu, and Klaus Wehrle
End-Host Authentication for HIP Middleboxes (Version 1)
Document number: draft-heer-hip-midauth-01
Internet Engineering Task Force,


Tobias Heer, Shaohui Li, and Klaus Wehrle
Proceedings of the Seventh IEEE International Conference on Peer-to-Peer Computing, 2007. P2P 2007, Galway, Ireland. Volume 1, page 251-252.
Publisher: IEEE, Washington, DC, USA
September 2007
ISBN: 978-0-7695-2986-8
Jó Agila Bitsch Link, Klaus Wehrle, Okuary Osechas, Johannes Thiele, and Hanspeter Mallot
6th GI/ITG KuVS Fachgespräch "Wireless Sensor Networks", Aachen, Germany Volume 2007-11of AIB, page 95 -- 97.
GI/ITG Fachgruppe "Kommunikation und Verteilte Systeme"
Publisher: RWTH Aachen University, Aachen, Germany
July 2007
RWTH Aachen, Aachen, Germany
July 2007
Simon Rieche, Klaus Wehrle, Marc Fouquet, Heiko Niedermayer, Leo Petrak, and Georg Carle
Proceedings of 4th Annual IEEE Consumer Communications and Networking Conference (CCNC 2007) , page 763-767.
Publisher: IEEE Press,
January 2007
RWTH Aachen University - Distributed Systems Group
ISBN: 1-4244-0667-6
Ralf Steinmetz, Klaus Wehrle, and Nicolas Liebau
Peer-to-Peer Systems (Editorial)
Special Issue on Peer-to-Peer of the it - Information Technology Journal, 49(ISSN 0935-3232)
MHT: A Mobility-Aware Distributed Hash Table
Special Issue on Peer-to-Peer of the it - Information Technology Journal, 49(5):298-303
ISSN: 1611-2776
Olaf Landsiedel, Alexis Pimenidis, Klaus Wehrle, Heiko Niedermayer, and Georg Carle
Dynamic Multipath Onion Routing in Anonymous Peer-To-Peer Overlay Networks
IEEE Global Communication Conference (GlobeCom), Washington D.C.
Juri Saragazki, Olaf Landsiedel, and Klaus Wehrle
Simulation von plattformunabhängigen TinyOS-Applikationen mit ns-2
Proceedings of 6th GI/ITG KuVS Fachgespräch "Wireless Sensor Networks"
Aachen, Germany
Stefan Schmitz, Olaf Landsiedel, and Klaus Wehrle
Smart Composition of Sensor Network Applications
Proceedings of 6th GI/ITG KuVS Fachgespräch "Wireless Sensor Networks", Aachen
Aachen, Germany
Oscar Garcia-Morchon, Heribert Baldus, Tobias Heer, and Klaus Wehrle
Cooperative Security in Distributed Sensor Networks
Proceedings of the third International Conference on Collaborative Computing: Networking, Applications and Worksharing, CollaborateCom 2007 Volume 1of 1
Publisher: IEEE, Washington, DC, USA
ISBN: 978-1-4244-1318-8
6. Fachgespräch Sensornetzwerke der GI/ITG Fachgruppe "Kommunikation und Verteilte Systeme"
Proceedings of Workshop
Document number: AIB 2007-11
Distributed Systems Group, RWTH Aachen University, Aachen, Germany
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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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