Abstract
As bandwidth requirements of users in passive optical networks continue to increase rapidly, especially due to the growth of video-streaming traffic, the need to resolve bandwidth contention among competing users and applications becomes more compelling. To address this problem, we propose application-aware software-defined Ethernet passive optical network (EPON) architecture. It utilizes application-level feedback from the client side (for video users) to the network, through a software-defined network controller, to achieve better client- and service-level differentiation in the downstream direction of an EPON access network. We adopt adaptive video streaming that utilizes feedbacks regarding network congestion for improving Quality of Experience (QoE) of video-streaming clients. Numerical results for video-streaming applications demonstrate that the proposed architecture for downstream resource allocation considerably reduces video stalls, increases video buffer levels, and also reduces video-switching rate, leading to better QoE for users as a result of better client- and service-level differentiation.
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This work was supported by ICT R&D program of MSIP//IITP [14-000-05-001, Smart Networking Core Technology Development].
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Chitimalla, D., Thota, S., Savas, S.S. et al. Application-aware software-defined EPON access network. Photon Netw Commun 30, 324–336 (2015). https://doi.org/10.1007/s11107-015-0554-7
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DOI: https://doi.org/10.1007/s11107-015-0554-7