Prof. Dr. Amr Rizk

Geänderte Adresse

• Personal Information
  Vita

  • Full Professor - Leibniz University Hannover (since 2024)
  • Tenured Professor - University of Duisburg-Essen (2021-2024)
  • Assistant Professor - Ulm University (2019- 2021)
  • Habilitation -  TU Darmstadt (2019)
  • Research Group Leader - Multimedia Communications Lab - TU Darmstadt (2016 - 2019)
  • Post-Doc - University of Massachusetts Amherst, USA (2015)
  • Post-Doc - University of Warwick, UK (2014)
  • Doctorate with distinction - Leibniz University Hannover (2013)

  Research Interests

  • Statistical Performance Evaluation of Communication Systems
  • Design and Hardware-acceleration of Real-time Distributed Systems
  • Coding and Transport of Immersive Multimedia

  Selected Publications 

  • F. Ciucu, S.  Mehri, A. Rizk: On Ultra-Sharp Queueing Bounds. IEEE INFOCOM (2024)
  • A. Rizk, JY. Le Boudec, "A Palm Calculus Approach to the Distribution of the Age of Information", IEEE Transactions on Information Theory (2023)
  • K. Elsayed, A. Rizk, “Time-to-Live Caching With Network Delays: Exact Analysis and Computable Approximations,” IEEE/ACM Transactions on Networking (2022)
  • S. Kar, R. Rehrmann, A. Mukhopadhyay, B. Alt, F. Ciucu, H. Koeppl, C. Binnig, and A. Rizk, “On the Throughput Optimization in Large-Scale Batch-Processing Systems,” Performance Evaluation, vol. 144, pp. 102–142 (2020)
  • F. Ciucu, F.  Poloczek, A. Rizk: Queue and Loss Distributions in Finite-buffer Queues. ACM SIGMETRICS (2019)
  • 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)
  • 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. ACM SIGMETRICS (2015)

  Awards

  • Best Paper Awards: IEEE QCNC (2024), ACM MMSys (2023), ACM/USENIX Middleware (2017)
  • Distinguished TPC Member, IEEE INFOCOM, 2020, 2022
  • Athene Young Investigator Award, TU Darmstadt 2017
  • Excellence in DASH - Paper Award at the ACM MMSys Conference 2016

  Editorships:

  • Associate Editor, Elsevier Computer Communications (Q1), since 2021

  Conference Organization:

  • Steering Committee, Network and Operating System Support for Digital Audio and Video (NOSSDAV), 2024-
  • PC Co-Chair, IEEE MIPR (Multimedia Information Processing and Retrieval), 2023
  • Co-Chair, GI KuVS Summer School “AI in Networking”, 2022
  • Co-Chair, Workshop on Network Calculus (WoNeCa), 2020
  • Demo Track Chair, ACM Multimedia Systems Conference (MMSys), Amherst, MA, USA, 2019
  • Area Co-Chair, IEEE International Conference on Multimedia Information Processing and Retrieval (MIPR), 2018, 2019
  • Co-Chair, Workshop on Network Calculus (WoNeCa) co-located with the 19th International GI/ITG Conference on “Measurement, Modelling and Evaluation of Computing Systems”, (MMB) Erlangen Germany, 2018

  Memberships in Technical Program Committees:

  •  IEEE International Conference on Computer Communications (INFOCOM) - Flagship of IEEE ComSoc, 2019, 2020 (Regular TPC), 2021 - 2025 (Advisory TPC)
  • ACM SIGMETRICS, 2024-2025
  • ACM International Symposium on Theory, Algorithmic Foundations, and Protocol Design for Mobile Networks and Mobile Computing (MobiHoc), 2023-2025
  • IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP), 2023
  • IFIP Networking, 2022-2024
  • IEEE International Symposium on Local and Metropolitan Area Networks (LANMAN), 2018, 2020 - 2023
  • ACM International Conference on Multimedia (ACM MM) - Flagship of ACM SIGMM, 2019, 2021-2024
  • International Teletraffic Congress (ITC), 2018, 2020, 2022, 2023
  • International Conference on Computer Communications and Networks (ICCCN), 2021
  • IEEE International Conference on Multimedia Information Processing and Retrieval (MIPR), 2018 - 2021
  • IEEE International Conference on Multimedia and Expo (ICME), 2020 - 2022
  • ACM Conference on Multimedia Systems Conference (MMSys), 2017 - 2020, 2023-2024
  • ACM Conference on Network and Operating Systems Support for Digital Audio an Video (NOSSDAV), 2020, 2022
  • IEEE International Workshop on Network Calculus and Applications, 2018
  • International Conference on Wired & Wireless Internet Communications (WWIC), 2016 - 2018
  • IEEE International Conference on Communications (ICC), 2016 - 2018
  • IEEE International Conference on Mobile Ad-hoc and Sensor Systems (MASS), 2015- 2017
  • IEEE Global Communications Conference: Communication QoS & Reliability & Modeling (Globecom: CQRM), 2015 - 2018

  Services

  • Member of the Selection Committee for Scholarship Programs - DAAD, Germany
  • Accreditation reviewer

  Current & Previous Research Projects as PI

  • ENVELOPE: Evaluation and validation of connected mobility in real open systems beyond 5GS, SNS/EU Horizon Europe, 2023
  • FlexShield: Resilient 5G Networking for Industrial Real-time Applications, BSI, 2023
  • PODIUM: PDI connectivity and cooperation enablers building trust and sustainability for CCAM, EU Horizon Europe, 2022
  • Model-based Transition Planning and Prediction, DFG, (subproject B04 in SFB MAKI), 2021
  • 5G-IANA: 5G Intelligent Automotive Network Applications, EU H2020, 2021
  • DynSDN: Dynamisches Management von rekonfigurierbaren Industrie 4.0 Echtzeit-Kommunikationsnetzen mittels Software-definierter Infrastruktur, DFG (subproject T03 in SFB MAKI), 2020
  • SPINE: Stochastic Performance Bounds for Information-Centric Communication Networks, DFG, 2018
  • Model-based Transition Planning and Prediction, DFG, (subproject B04 in SFB MAKI), 2017
  • PathSense: Industrial Edge-Device Optimization und Knowledge Distillation, Industry funded, 2022
• Publications
  alle Kategorien Zeitschriftenbeiträge Konferenzbeiträge Buchbeiträge Patent Vorträge Dissertationen Diplom-/Masterarbeiten Studien-/Bachelorarbeiten Sonstiges

  alle Jahre 2025 2024 2023 2022 2021

  Zurücksetzen

  Zeitschriftenbeiträge

  • Christian Timmerer and Hadi Amirpour and Farzad Tashtarian and Samira Afzal and Amr Rizk and Michael Zink and Hermann Hellwagner (2025): HTTP Adaptive Streaming: A Review on Current Advances and Future Challenges,  ACM Transactions on Multimedia Computing, Communications, and Applications
    DOI: 10.1145/3736306
  • Nehal Baganal-Krishna, Ralf Lübben, Eirini Liotou, Konstantinos V. Katsaros, Amr Rizk (2024): A federated learning approach to QoS forecasting in cellular vehicular communications: Approaches and empirical evidence,  Computer Networks
    DOI: https://doi.org/10.1016/j.comnet.2024.110239

  Konferenzbeiträge

  • Drainakis, Georgios, Panagiotis Pantazopoulos, Konstantinos V. Katsaros, Vasilis Sourlas, Thanos Xirofotos, Nehal Baganal-Krishna, Amr Rizk (2025): Service Orchestration at the Extreme-Edge: An Experimental Investigation Over a 5G Testbed,  IEEE International Conference on Communications ICC
    DOI: 10.1109/ICC52391.2025.11160988
  • Rudolph, Michael and Rizk, Amr (2025): Learned Compression in Adaptive Point Cloud Streaming: Opportunities, Challenges and Limitations,  Proceedings of the 16th ACM Multimedia Systems Conference
    DOI: https://doi.org/10.1145/3712676.3719266
  • Nehal Baganal-Krishna, Yuang Shi, Wei Tsang Ooi, Amr Rizk (2025): NETSPLAT: Data Plane Network Assistance for Streaming 3D Gaussian Splatting Scenes,  Proceedings of the 3rd Workshop on Emerging Multimedia Systems at ACM SIGCOMM 2025 in Coimbra, Portugal.
    DOI: https://doi.org/10.1145/3746441.3748225
    ISBN: 9798400720611
  • Anam Tahir, Kai Cui, Bastian Alt, Amr Rizk, Heinz Koeppl (2024): Collaborative optimization of the age of information under partial observability,  IFIP Networking
    DOI: 10.23919/IFIPNetworking62109.2024.10619823
  • Nehal Baganal-Krishna, Amr Rizk (2024): Adaptive Traffic Steering for Cellular Networks: Leveraging Predictive QoS Metrics for Application-Specific Optimization,  KuVS Fachgespräch - Würzburg Workshop on 6G Networks
  • Michael Rudolph, Aron Riemenschneider, Amr Rizk (2024): Progressive Coding for Deep Learning based Point Cloud Attribute Compression,  Proceedings of the 16th International Workshop on Immersive Mixed and Virtual Environment Systems
    DOI: https://doi.org/10.1145/3652212.3652217
  • Nehal Baganal-Krishna, Tuan-Dat Tran, Ralf Kundel, Amr Rizk (2023): RPM: Reverse Path Congestion Marking on P4 Programmable Switches,  2023 IEEE 48th Conference on Local Computer Networks (LCN)
    DOI: https://doi.org/10.1109/LCN58197.2023.10223327
  • Nehal Baganal-Krishna, David Munstein, Amr Rizk (2023): LETHE: Combined Time-to-Live Caching and Load Balancing on the Network Data Plane,  2023 IEEE 29th International Symposium on Local and Metropolitan Area Networks (LANMAN)
    DOI: https://doi.org/10.1109/LANMAN58293.2023.10189809
  • Rudolph, Michael and Schneegass, Stefan and Rizk, Amr (2023): RABBIT: Live Transcoding of V-PCC Point Cloud Streams,  Proceedings of the 14th Conference on ACM Multimedia Systems
    DOI: https://doi.org/10.1145/3587819.3590978
  • Anam Tahir, Bastian Alt, Amr Rizk, Heinz Koeppl (2022): Load Balancing in Compute Clusters With Delayed Feedback
    DOI: 10.1109/TC.2022.3215907
  • Francesca Moscatelli, Thanos Xirofotos, Amr Rizk, Nehal Baganal-Krishna, Edoardo Bonetto, Eirini Liotou (2022): The 5G-IANA platform: Bringing far-edge resources and ML potential to the disposal of automotive third parties,  2022 IEEE Future Networks World Forum (FNWF)
    DOI: https://doi.org/10.1109/FNWF55208.2022.00118
  • Rudolph, Michael and Rizk, Amr (2022): View-Adaptive Streaming of Point Cloud Scenes through combined Decomposition and Video-based Coding,  Proceedings of the 1st International Workshop on Advances in Point Cloud Compression, Processing and Analysis
    DOI: https://doi.org/10.1145/3552457.3555732
  • Ralf Kundel, Nehal Baganal Krishna, Christoph Gärtner, Tobias Meuser, Amr Rizk (2021): Poster: Reverse-Path Congestion Notification: Accelerating the Congestion Control Feedback Loop,  2021 IEEE 29th International Conference on Network Protocols (ICNP)
    DOI: 10.1109/ICNP52444.2021.9651961
• Research Projects
  Jahr 2025 2024 2023

  • CLAYRE - Cross-layer Resilience for Criticality-aware Wireless Networks

    Emerging wireless applications in healthcare, transportation, and industrial automation require strict reliability and low-latency guarantees, which are challenging to provide as wireless networks face channel variability, blockages, and sudden traffic surges. This challenge is aggravated with the emergence of mixed-critical traffic combining critical, time-sensitive traffic, such as sensor and control flows, with non-critical application traffic. State-of-the-art approaches address only isolated aspects of resilience, lacking a solution to ensure consistent performance for mixed-critical applications. This project bridges this gap by designing a cross-layer resilience framework for criticality-aware wireless communication systems. In clear contrast to established research on steady-state behavior we aim to design resilient mechanisms with transient guarantees. Our approach integrates physical layer robustness and adaptation mechanisms with flow-level queueing and scheduling mechanisms. A key focus is on criticality-aware schemes, prioritizing flows based on their time- or age-criticality, and leveraging event-triggered mechanisms based on real-time performance indicators such as Age of Information (AoI) and Value of Information (VoI). Our goal is to establish fundamental principles and novel concepts for designing resilient and future-proof wireless systems capable of supporting highly demanding mixed-critical applications.

    Leitung: Prof. Dr.-Ing. Amr Rizk

    Team: Nairong Liu

    Jahr: 2025

    Förderung: Deutsche Forschungsgemeinschaft (DFG)

    Laufzeit: 10/2025 - 09/2028
  • RABBIT@Scale - Transcoding Techniques for Real-time Applications

    RABBIT@Scale explores the scalability of real-time transcoding for dynamic, volumetric point cloud streams in telepresence applications in the SPIRIT project. The project adapts both software- and hardware-based components into a cloud-native transcoding-as-a-service framework. The focus lies on Video-based Point Cloud Compression (V-PCC) and the real-time adaptation of streams for heterogeneous clients with varying bandwidths. By integrating adaptive bitrate streaming (ABR), RABBIT@Scale dynamically serves optimized content based on clients’ network conditions. To evaluate system performance, scalability, and rate-distortion trade-offs, the framework is deployed on the SPIRIT infrastructure. The goal is to demonstrate how real-time volumetric media delivery can scale efficiently for demanding distribution use cases.

    Leitung: Prof. Dr.-Ing. Amr Rizk

    Team: Michael Rudolph

    Jahr: 2025

    Förderung: Horizon Europe
  • ENVELOPE - Evaluation and validation of connected mobility in real open systems beyond 5GS

    5G adv. and 6G aim to expand the set of supported verticals and provide enhanced capabilities beyond connectivity. 5G CAM vertical services are a broad range of services in and around vehicles, including both safety-related and other services enabled or supported by 5G. 5GS has been built as a modular architecture to support any vertical running on top in a vertical-agnostic manner. However, it is realized that certain verticals (like CAM) have specific and strict requirements. Although significant progress has been made in supporting verticals, the corresponding necessary configuration of the network and end-devices is a time-consuming manual process that requires tight coordination at technical and business levels across the verticals, the vendors, the network operator, and even the end-users. This hinders not only the greater adoption of 5GS but also the uptake of novel CAM UCs and the modernization of existing ones that require a tighter integration with the underlying network. The main objective of ENVELOPE is to advance and open up the reference 5G adv. architecture, and also to transform it into a vertical-oriented with the necessary interfaces tailored to the CAM UCs that i) expose network capabilities to verticals, ii) provide vertical-information to the network; iii) enable verticals to dynamically request and modify certain network aspects in an open, transparent and easy to use, semi-automated way. ENVELOPE aims to deliver 3 large-scale B5G trial sites in Italy, Netherlands and Greece for CAM services and beyond, implementing functionalities tailored to the CAM services and advanced exposure capabilities. Although focused on the CAM vertical, the resulting developments will be reusable by any vertical. The ENVELOPE architecture will serve as an envelope that can cover, accommodate and support any type of vertical services.

    Leitung: Prof. Dr.-Ing. Amr Rizk

    Team: Nehal Baganal Krishna, Jannis Weil

    Jahr: 2024

    Förderung: HORIZON Europe JU-SNS

    Laufzeit: 01/2024 - 12/2026
  • PODIUM - PDI connectivity and cooperation enablers building trust and sustainability for CCAM

    In PoDIUM, using and enhancing the facilities of 3 well-equipped Living Labs in Germany, Italy and Spain we define a rich set of demanding CCAM UCs to identify and assess all the connectivity and cooperation enablers and needs that will allow the proposed higher levels of automation. Building on the proposed UCs (urban and highway - incl. cross-border setups), which will be demonstrated and validated in real-life conditions, PoDIUM will tackle all the different requirements for availability and performance of connectivity as well as the different cooperation enablers per UC. The proposed UCs aim to advance a set of key technologies both in the physical and digital part of the infrastructure. A multi-connectivity approach is followed to ensure reliability, availability and redundancy of the PDI system (i.e. ITS-G5, 5G, LTE, 5G mmWave, 60GHz-WiFi, etc.). As part of the proposed PDI system, a distributed, interoperable and hybrid (MEC and cloud-based) data management environment will be implemented, which will include suitable advanced environment perception models and digital twins to facilitate seamless and efficient exchange of data (in low latency), thus enabling real-time analytics and opening up new business opportunities. Software integrity and data truthfulness of external data are important aspects that will be considered throughout the PDI to address existing gaps. New and standardised C-ITS messages will be integrated to support advanced functionalities, whereas new designs of RSUs and OBUs will allow advanced environmental modelling and digital twins based on locally generated data. Last but not least, a major focus will be laid on the integration of VRUs in the overall PDI. All those elements will be integrated under the umbrella of the three layered PoDIUM reference architecture, which is flexible and applicable in different road environments based on the available infrastructure equipment enabling different kinds of services.

    Leitung: Prof. Dr.-Ing. Amr Rizk

    Team: Nehal Baganal Krishna

    Jahr: 2023

    Laufzeit: 2023-2025