Lehrstuhl für Informatik III

    Research Area: Access Networks

    We deal within the CAN group with the research field of "Access Networks".

    Access networks represent a very focused area in the research field of communication networks. In access networks, there are important communication paradigms that are subject of research in the CAN group. We examine the performance of communication processes and principles with means of modeling and performance analysis.

    Study on Wifi Offloading

    WiFi offloading is a current trend to cope with the demands of mobile users and the load on cellular networks. It allows providers to handle the traffic in well-dimensioned fixed networks and thereby save costs. In addition, end users can benefit from higher throughput and avoid exceeding their data plan.

    We develop simulative and analytic models to investigate the potential of WiFi offloading to mitigate load of cellular networks. We evaluate its impact on QoE and energy efficiency for video streaming applications.

    • Seufert, M., Moldovan, C., Burger, V., Hoßfeld, T.: Applicability and Limitations of a Simple WiFi Hotspot Model for Cities. 13th International Conference on Network and Service Management (CNSM). , Tokio, Japan (2017).
    • Seufert, M., Burger, V., Kaup, F.: Evaluating the Impact of WiFi Offloading on Mobile Users of HTTP Adaptive Video Streaming. 5th IEEE International Workshop on Quality of Experience for Multimedia Communications (QoEMC). , Washington, DC, USA (2016).
    • Seufert, M., Griepentrog, T., Burger, V., Hoßfeld, T.: A Simple WiFi Hotspot Model for Cities. IEEE Communications Letters. 20, 384 - 387 (2016).
    • Petropoulos, G., Lareida, A., Soursos, S., Seufert, M., Burger, V., Stiller, B.: WiFi Offloading and Socially Aware Prefetching on Augmented Home Routers, (2015).
    • Burger, V., Kaup, F., Seufert, M., Wichtlhuber, M., Hausheer, D., Tran-Gia, P.: Energy Considerations for WiFi Offloading of Video Streaming. 7th EAI International Conference on Mobile Networks and Management (MONAMI). , Santander, Spain (2015).
    • Burger, V., Seufert, M., Kaup, F., Wichtlhuber, M., Hausheer, D., Tran-Gia, P.: Impact of WiFi Offloading on Video Streaming QoE in Urban Environments. IEEE Workshop on Quality of Experience-based Management for Future Internet Applications and Services (QoE-FI). , London, UK (2015).
    • Seufert, M., Burger, V., Hoßfeld, T.: HORST - Home Router Sharing based on Trust. Workshop on Social-aware Economic Traffic Management for Overlay and Cloud Applications (SETM). , Zurich, Switzerland (2013).

    Application Aware Networking

    Application-aware resource management is the approach to tailor access networks to have characteristics beneficial for the running applications and services. This is achieved through the monitoring and integration of key performance indicators from the application layer within the network resource management.

    Using analytic and simulative approaches, we conduct analysis methods for network operators to quantify the performance gains of resource allocation algorithms that implement the application-aware concept.


    • Wamser, F., Zinner, T., Iffländer, L., Tran-Gia, P.: Demonstrating the Prospects of Dynamic Application-Aware Networking in a Home Environment, (2014).
    • Jarschel, M., Wamser, F., Höhn, T., Zinner, T., Tran-Gia, P.: SDN-based Application-Aware Networking on the Example of YouTube Video Streaming. , 2nd European Workshop on Software Defined Networks (EWSDN 2013), Berlin, Germany (2013).
    • Staehle, B., Wamser, F., Deschner, S., Blenk, A., Staehle, D., Hahm, O., Schmittberger, N., Günes, M.: Application-Aware Self-Optimization of Wireless Mesh Networks with AquareYoum and DES-SERT, (2011).

    Student Works

    • Züfle, M.: Testbed Validation and Comparison with Simulation, (2016).

    Previous Works

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    Lehrstuhl für Informatik III (Kommunikationsnetze)
    Am Hubland
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