Offline and online multi-thread polling in long-reach PONs: A critical evaluation

Anu Mercian, Michael P. McGarry, Martin Reisslein

Research output: Contribution to journalArticlepeer-review

61 Scopus citations


Multi-thread polling (MTP) with offline scheduling and offline excess bandwidth distribution has recently been proposed to overcome the long propagation delay of long-reach passive optical networks (LR-PONs). In this paper, we propose a complementary MTP approach with online scheduling and online excess bandwidth distribution. We evaluate the throughput-delay performance of offline and online MTP against offline and online single-thread polling (STP) with excess bandwidth distribution as well as double-phase polling (DPP) with excess bandwidth distribution. We find that online MTP and STP as well as DPP give significantly lower average packet delays than offline MTP.

Original languageEnglish (US)
Article number6515602
Pages (from-to)2018-2028
Number of pages11
JournalJournal of Lightwave Technology
Issue number12
StatePublished - 2013


  • Delay evaluation
  • dynamic bandwidth allocation
  • excess bandwidth distribution
  • long-reach PON (LR-PON)
  • multi-thread polling (MTP)

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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