Abstract
When delivering multimedia services over Internet, different media types are impacted by resource limitations in a different way. While an interactive audio service calls for low-latency communication, video streams should be routed over network paths with sufficient capacity. However, in current networks flows towards the same destination follow the same path, which may lead to a suboptimal resource utilization that effectively penalizes end-users’ quality of experience (QoE). This paper proposes Q-POINT, a QoE-driven path optimization model to fairly maximize aggregated end-user QoE for competing clients’ service flows by calculating the best path for each flow, subject to resource constraints. We formulate the problem as a mixed integer linear program integrating QoE models for audio, video and data transfer. Such an approach can be leveraged within the software-defined networking paradigm, which provides a control plane to orchestrate path set-up. We evaluate our model and illustrate its benefits over shortest path selection.
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Dobrijevic, O., Kassler, A.J., Skorin-Kapov, L., Matijasevic, M. (2014). Q-POINT: QoE-Driven Path Optimization Model for Multimedia Services. In: Mellouk, A., Fowler, S., Hoceini, S., Daachi, B. (eds) Wired/Wireless Internet Communications. WWIC 2014. Lecture Notes in Computer Science, vol 8458. Springer, Cham. https://doi.org/10.1007/978-3-319-13174-0_11
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DOI: https://doi.org/10.1007/978-3-319-13174-0_11
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