Deploying Circuit Emulation Services (CES) over EPON using preemptive priority medium access controller

Wen Kang Jia*, Yaw-Chung Chen

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


Circuit Emulation Services (CES) technology has emerged as an option to mitigate traditional Time Division Multiplexing (TDM) circuits supporting legacy applications across managed packet networks and the Ethernet Passive Optical Network (EPON) is becoming a major technology for pervasive access. The primary benefits of CES over EPON (CESoEPON) are the low cost and simplicity of deployment to support all types of legacy TDM applications across EPONs. Thus, the QoS-guarantee for highly delay-sensitive services on EPONs could be enhanced. This paper investigates a preemptive priority transmission technique that works on MAC and PHY layer of downstream EPONs. The proposed novel scheme effectively reduces the frame queuing delay as well as jitter, so as to enhance precise time synchronization in EPONs. Through simulation experiments, we show that the proposed scheme achieves superior and precise QoS control compared to existing non-preemptive priority methods. A feasible implementation of the proposed solution is also addressed. Finally, we present a general conclusion of the paper as well as address the pros and cons for practical deployment in future works.

Original languageEnglish
Pages (from-to)25-46
Number of pages22
JournalJournal of Network and Systems Management
Issue number1
StatePublished - 1 Mar 2013


  • Circuit Emulation Services (CES)
  • Ethernet Passive Optical Network (EPON)
  • Preemptive priority
  • TDM
  • Time synchronization

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