Deutsch Intern
Chair of Computer Science III

Prof. Dr. Tobias Hoßfeld

Telefon (0931) 31-86631
Telefax (0931) 31-86632

tobias.hossfeld@uni-wuerzburg.de (private)

cs.international@informatik.uni-wuerzburg.de (Erasmus)
(Study: Informatik und Nachhaltigkeit)

Raum A211


Lehrstuhl für Kommunikationsnetze (Informatik III)

Am Hubland
D-97074 Würzburg

Book on Performance Modeling and Analysis of Communication Networks

The text book is published as open access book by the Würzburg University Press: https://www.performance-modeling.org/ 

The book focuses on the fundamental models of queueing theory as well as advanced models for recent communication systems and networks. It gives an introduction in common methods of performance modeling and analysis of communication systems. These methods form the basis of traffic engineering, teletraffic theory, and system analytical dimensioning tools. The fundamentals of probability theory, stochastic processes, Markov processes, and embedded Markov chains are presented. Basic queueing models are described with applications in communication networks. Advanced methods are presented that have been frequently used in practice, especially discrete-time analysis algorithms, or which go beyond classical performance like quality of experience or energy efficiency. Recent examples of modern communication networks include Software Defined Networking or the Internet of Things. Throughout the book, illustrative examples are used to provide practical experience in performance modeling and analysis.

An implementation of the models in the book is available as interactive notebooks. The scripts will help students to better understand the impact of parameters on performance characteristics, will avoid common pitfalls in the implementation, and provide means for numerical robust and efficient implementations for researchers in the domain.

Short CV

Tobias Hoßfeld is professor at the Chair of Communication Networks at the University of Würzburg, Germany, since 2018. He finished his PhD in 2009 and his professorial thesis (habilitation) "Modeling and Analysis of Internet Applications and Services" in 2013 at the University of Würzburg, where he was also heading the "Future Internet Applications & Overlays" research group. From 2014 to 2018, he was head of the Chair "Modeling of Adaptive Systems" at the University of Duisburg-Essen, Germany. He has published more than 100 research papers in major conferences and journals, receiving 5 best conference paper awards, 3 awards for his PhD thesis, and the Fred W. Ellersick Prize 2013 (IEEE Communications Society) for one of his articles on QoE. He is member of the advisory board of the ITC conference and the editorial board of IEEE Communications Surveys & Tutorials.

Editorial board member

TPC Co-Chair of (selected) International Conferences

Selected Awards

  • Best Paper Award at WMNC 2021
  • QoMEX 2017 Reviewer Recognition Award
  • Fred W. Ellersick Prize 2013 (IEEE Communications Socienty), given annually to the best article published in a Communications Society magazine in the previous 3 calendar years: "A Generic Quantitative Relationship between Quality of Experience and Quality of Service,"IEEE Network, Vol. 24, No. 2, March/April 2010, pp.36-41.
  • GI/ITG “Messung, Modellierung und Bewertung von Rechensystemen” MMB 2010 PhD award
  • Award for outstanding PhD theses 2010 at University of Würzburg
  • Best dissertation award 2010 of the Institute of Computer Science

University Education

  • 9/2009 - 5/2013: Habilitation at the University of Würzburg on “Modeling and Analysis of Internet Applications and Services”.
  • 10/2003 - 8/2009: Dr. rer. nat. at the University of Würzburg (summa cum laude). PhD tesis at OPUS 
  • 10/1997 - 9/2003: Dipl.Inform. at University of Würzburg; Computer Science with minor physics (Diplom); Mathematics with minor physics (Vordiplom).

Work Experience

  • from 2018: full professor at the University of Würzburg and head of the chair of "Communication Networks"
  • 2014 - 2018: full professor at the University of Duisburg-Essen and head of the chair of “Modeling of Adaptive Systems”
  • 2008 - 2014: head of the FIA research group “Future Internet Applications & Overlays”
  • 2013 - 2014: Privatdozent at the University of Würzburg
  • in 2011: research stay as Senior researcher at Forschungszentrum Telekommunikation Wien (FTW), Vienna, Austria
  • 2009 - 2013: senior researcher & Akademischer Rat at the University of Würzburg
  • 2004 - 2009: research assistant at Chair of Communication Networks, Prof. Dr.-Ing. P. Tran-Gia, University of Würzburg