Online excess bandwidth distribution for Ethernet passive optical networks

Jason R. Ferguson, Martin Reisslein, Michael P. McGarry

Research output: Contribution to journalArticlepeer-review

18 Scopus citations


Excess bandwidth distribution techniques have recently been proposed to improve the dynamic bandwidth allocation in Ethernet passive optical networks (EPONs). We compare existing offline excess bandwidth distribution with conventional limited interleaved polling with adaptive cycle time (IPACT-limited) in terms of packet delay performance. We identify the factors that result in packet delay reduction with excess bandwidth distribution compared to IPACT-limited and discover that existing offline excess distribution mechanisms become unstable at moderate to high loads in long-range EPONs with large round-trip propagation delays. We propose a novel online excess bandwidth distribution (OEBD) mechanism to provide stable excess bandwidth distribution even at high loads in long-range EPONs. We demonstrate how OEBD can be tuned via parameters to provide grant sizing between limited and gated service.

Original languageEnglish (US)
Pages (from-to)358-369
Number of pages12
JournalJournal of Optical Networking
Issue number4
StatePublished - Apr 1 2009

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Computer Science Applications
  • Computer Networks and Communications
  • Electrical and Electronic Engineering


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