Jun.-Prof. Dr.-Ing. Amr Rizk

I am a Juniorprofessor at Ulm University covering the topics of connected mobility and high performance communication networks. Previsouly, I was an Athene Young Investigator (Independent Research Group head) at the TU Darmstadt until July 2019. From Feb. 2016 to July 2019 I was also head the Adaptive Overlay Communications group at the Multimedia Communications Lab of the TU Darmstadt. As a Post-Doctoral researcher I was affiliated with the Department of Computer Science at the University of Warwick, U.K. (2014), and the University of Massachusetts Amherst, USA (2015). I obtained my Dr.-Ing. degree with distinction at the Leibniz Universität Hannover in 2013.


My research focus lies on stochastic modeling and optimization of networked systems. To this end, I develop methods and techniques in the areas of Queuing Theory and Network Calculus. I apply these analytical tools for the design, quantitative analysis and control of various connected systems such as wired and wireless communication systems, as well as, industrial automation. Particular applications of my work include: 

  • Hardware-accelerated Networking
  • Multi-interface Communication (http://progmp.net/)
  • Volumetric Streaming
  • Adaptive and self-driving Networks

Selected Publications

  • F. Ciucu, F.  Poloczek, A. Rizk: Queue and Loss Distributions in Finite-buffer Queues. 
  • B. Alt, T. Ballard, R. Steinmetz, H. Koeppl, and A. Rizk, “CBA: Contextual Quality Adaptation for Adaptive Bitrate Video Streaming,” IEEE INFOCOM (2019)
  • A. Frömmgen, D. Stohr, B. Koldehofe, and A. Rizk, “Don’t Repeat Yourself: Seamless Execution and Analysis of Extensive Network Experiments,” ACM CoNEXT (2018)
  • W. R. KhudaBukhsh, B. Alt, S. Kar, A. Rizk, H. Koeppl: Collaborative Uploading in Heterogeneous Networks: Optimal and Adaptive Strategies. IEEE INFOCOM (2018)
  • D. Stohr, A. Frömmgen, A. Rizk, M. Zink, R. Steinmetz, W. Effelsberg: Where are the Sweet Spots? A Systematic Approach to Reproducible DASH Player Comparisons. ACM Multimedia (2017)
  • A. Frömmgen, A. Rizk, T. Erbshäußer, M. Weller, B. Koldehofe, A. Buchmann, R. Steinmetz: A Programming Model for Application-defined Multipath TCP Scheduling,
    ACM/IFIP/USENIX Middleware 2017 - Best paper award
  • W. R. KhudaBukhsh, A. Rizk, A. Frömmgen, H. Koeppl: Optimizing Stochastic Scheduling in Fork-Join Queuing Models: Bounds and Applications. IEEE INFOCOM (2017)
  • Z. Bozakov, A. Rizk, D. Bhat, M. Zink: Measurement-based Flow Characterization in Centrally Controlled Networks. IEEE INFOCOM (2016)
  • A. Rizk, F.  Poloczek, F. Ciucu: Computable Bounds in Fork-Join Queueing Systems. 
  • M. Fidler, A. Rizk: A Guide to the Stochastic Network Calculus. IEEE Communications Surveys and Tutorials 17(1): 92-105 (2015)

List of Publications

on DBLP, on Google Scholar


  • Systemtheorie (WiSe 2019/2020)
  • Seminar: Quality of Service and Programmability at the Network Edge (WiSe 2019/2020)


Digital vernetzte Mobilitätssysteme


Jun.-Prof. Dr.-Ing. Amr Rizk
Room: 41.2.228
Phone: +49 (0)731 50 27005
E-Mail | Homepage

Office hours

On appointment