• 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 ...
    • Delay-Resistant Geo-Distributed Analytics 

      Mostafaei, Habib; Smaragdakis, Georgios; Zinner, Thomas Erich; Feldmann, Anja (Peer reviewed; Journal article, 2022)
      Big data analytics platforms have played a critical role in the unprecedented success of data-driven applications. However, real-time and streaming data applications, and recent legislation, e.g., GDPR in Europe, have posed ...
    • Demonstrating QoE-aware 5G Network Slicing Emulated with HTB in OMNeT++ 

      Gajic, Marija; Bosk, Marcin; Schwarzmann, Susanna; Lange, Stanislav; Zinner, Thomas Erich (Chapter, 2022)
      Today’s networks support a great variety of services with different bandwidth and latency requirements. To maintain high user satisfaction and efficient resource utilization, providers employ traffic shaping. One such ...
    • 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 ...
    • QoS-Aware Inter-Domain Connectivity: Control Plane Design and Operational Considerations 

      Lange, Stanislav; Pajo, Jane Frances; Zinner, Thomas Erich; Lønsethagen, Håkon; Xie, Min (Chapter, 2022)
      Scenarios related to 5G and beyond give rise to a high degree of heterogeneity in terms of applications, services, and user expectations as well as more demanding QoS requirements with an end-to-end scope that can cover ...
    • 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 ...
    • TeraFlow: Secured Autonomic Traffic Management for a Tera of SDN flows 

      Vilalta, Ricard; Munoz, Raul; Cassellas, Ramon; Martinez, Ricardo; Lopez, Victor; González de Dios, Oscar; Pastor, Antonio; Katsikas, Georgios; Klaedtke, Felix; Monti, Paolo; Mozo, Alberto; Zinner, Thomas Erich; Øverby, Harald; Gonzalez-Diaz, Sergio; Lønsethagen, Håkon; Pulido, José-Miguel; King, Daniel (Chapter, 2021)
      TeraFlow proposes a new type of secure, cloud-native Software Defined Networking (SDN) controller that will radically advance the state-of-the-art in beyond 5G networks by introducing novel micro-services architecture, and ...
    • 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 assessing effects of isolation on determinism in multi-application scenarios 

      Lange, Stanislav; Gajic, Marija; Zinner, Thomas Erich; Pajo, Jane Frances; Lønsethagen, Håkon; Xie, Min; Vilalta, Ricard (Chapter, 2022)
      In addition to the already present heterogeneity in the network service and application ecosystem, new challenges come in the form of emerging applications which require deterministic delay performance characteristics that ...
    • 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, ...
    • Using 5G QoS Mechanisms to Achieve QoE-Aware Resource Allocation 

      Bosk, Marcin; Gajic, Marija; Schwarzmann, Susanna; Lange, Stanislav; Trivisonno, Riccardo; Marquezan, Clarissa; Zinner, Thomas Erich (Chapter, 2021)
      Network operators generally aim at providing a good level of satisfaction to their customers. Diverse application demands require the usage of beyond best-effort resource allocation mechanisms, particularly in resource-constrained ...
    • 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 ...