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Photonic Network Communications

, Volume 30, Issue 3, pp 324–336 | Cite as

Application-aware software-defined EPON access network

  • Divya ChitimallaEmail author
  • Saigopal Thota
  • S. Sedef Savas
  • Pulak Chowdhury
  • Massimo Tornatore
  • Sang-Soo Lee
  • Han-Hyub Lee
  • Soomyung Park
  • Hwan Seok Chung
  • Biswanath Mukherjee
Article

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.

Keywords

Access network EPON SDN Application-awareness Downstream traffic 

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Copyright information

© Springer Science+Business Media New York 2015

Authors and Affiliations

  • Divya Chitimalla
    • 1
    Email author
  • Saigopal Thota
    • 1
  • S. Sedef Savas
    • 1
  • Pulak Chowdhury
    • 1
  • Massimo Tornatore
    • 1
    • 2
  • Sang-Soo Lee
    • 3
  • Han-Hyub Lee
    • 3
  • Soomyung Park
    • 3
  • Hwan Seok Chung
    • 3
  • Biswanath Mukherjee
    • 1
  1. 1.University of California DavisDavisUSA
  2. 2.Politecnico di MilanoMilanItaly
  3. 3.Electronics and Telecommunications Research InstituteDaejeonKorea

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