• BBGDASH: A Max-Min Bounded Bitrate Guidance for SDN Enabled Adaptive Video Streaming 

      Al-Issa, Ali; Bentaleb, Abdelhak; Zinner, Thomas Erich; Mkwawa, Is-Haka; Ghita, Bogdan V. (Chapter, 2019)
      The increase in video traffic and the end-user demands for high-quality videos have triggered academia and industry to find novel mechanisms for media distribution. Among the available streaming services, HTTP adaptive ...
    • Computing QoE-Relevant Adaptive Video Streaming Metrics Using Discrete-Time Analysis 

      Schwarzmann, Susanna; Breitbach, Paula; Zinner, Thomas Erich (Chapter, 2019)
      HTTP Adaptive Streaming (HAS) is the de-facto standard for video delivery over the Internet. Splitting the video clip into small segments and providing multiple quality levels per segment allows the client to dynamically ...
    • Discrete-Time Modeling of NFV Accelerators that Exploit Batched Processing 

      Lange, Stanislav; Linguaglossa, Leonardo; Geissler, Stefan; Rossi, Dario; Zinner, Thomas Erich (Chapter, 2019)
      Network Functions Virtualization (NFV) is among the latest network revolutions, bringing flexibility and avoiding network ossification. At the same time, all-software NFV implementations on commodity hardware raise performance ...
    • Estimating Video Streaming QoE in the 5G Architecture Using Machine Learning 

      Schwarzmann, Susanna; Marquezan, Clarissa; Bosk, Marcin; Liu, Huiran; Trivisonno, Riccardo; Zinner, Thomas Erich (Chapter, 2019)
      Compared to earlier mobile network generations, the 5G system architecture has been significantly enhanced by the introduction of network analytics functionalities and ex- tended capabilities of interacting with third party ...
    • Highlighting the Gap Between Expected and Actual Behavior in P4-enabled Networks 

      Gray, Nicolas; Grigorjew, Alexej; Hossfeld, Tobias; Apoorv, Shukla; Zinner, Thomas Erich (Chapter, 2019)
      Modern networks increasingly rely on Software-defined Networking (SDN) and Network Function Virtualization (NFV) to augment their flexibility in high load scenarios. To further enhance the performance, a part of the ...
    • KOMon—Kernel-based Online Monitoring of VNF Packet Processing Times 

      Geissler, Stefan; Lange, Stanislav; Wamser, Florian; Zinner, Thomas Erich; Hossfeld, Tobias (Chapter, 2019)
      The ongoing softwarization of networks comes with several advantages like cost efficiency, increased scalability, and better flexibility by migrating functionality from static, application specific hardware appliances to ...
    • Survey of Performance Acceleration Techniques for Network Function Virtualization 

      Linguaglossa, Leonardo; Lange, Stanislav; Pontarelli, Salvatore; Rétvári, Gábor; Rossi, Dario; Zinner, Thomas Erich; Bifulco, Roberto; Jarschel, Michael; Bianchi, Giuseppe (Journal article; Peer reviewed, 2019)
      The ongoing network softwarization trend holds the promise to revolutionize network infrastructures by making them more flexible, reconfigurable, portable, and more adaptive than ever. Still, the migration from ...
    • The Power of Composition: Abstracting a Multi-Device SDN Data Path Through a Single API 

      Geissler, Stefan; Herrnleben, Stefan; Bauer, Robert; Grigorjew, Alexej; Zinner, Thomas Erich; Jarschel, Michael (Journal article; Peer reviewed, 2019)
      Software Defined Networking aims to separate network control and data plane by moving the control logic from network elements into a logically-centralized controller. Using a well-defined, unified control-channel protocol, ...
    • Towards Consistent SDNS: A Case for Network State Fuzzing 

      Apoorv, Shukla; S. Jawad, Saidi; Stefan, Schmid; Marco, Canini; Zinner, Thomas Erich; Feldmann, Anja (Journal article; Peer reviewed, 2019)
      The conventional wisdom is that a software-defined network (SDN) operates under the premise that the logically centralized control plane has an accurate representation of the actual data plane state. Unfortunately, bugs, ...
    • Web performance pitfalls 

      Enghardt, Theresa; Zinner, Thomas Erich; Feldmann, Anja (Chapter, 2019)
      Web performance is widely studied in terms of load times, numbers of objects, object sizes, and total page sizes. However, for all these metrics, there are various definitions, data sources, and measurement tools. These ...