Application-aware software-defined EPON access network

作者：Chitimalla Divya^*; Thota Saigopal; Savas S Sedef; Chowdhury Pulak; Tornatore Massimo; Lee Sang Soo; Lee Han Hyub; Park Soomyung; Chung Hwan Seok; Mukherjee Biswanath

来源：Photonic Network Communications, 2015, 30(3): 324-336.

DOI：10.1007/s11107-015-0554-7

• Access network
• EPON
• SDN
• Application-awareness
• Downstream traffic

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.

• 出版日期2015-12