Multicast capacity of optical packet ring for hotspot traffic

Matthias an der Heiden, Michel Sortais, Michael Scheutzow, Martin Reisslein, Patrick Seeling, Martin Herzog, Martin Maier

Research output: Contribution to journalArticle

3 Scopus citations

Abstract

Hotspot traffic is common in metro ring networks connecting access networks with backbone networks, and these metro rings are also expected to support a mix of unicast, multicast, and broadcast traffic. Shortest path (SP) routing, as employed in the IEEE 802.17 Resilient Packet Ring (RPR), is widely considered for metro rings as it maximizes spatial reuse and, thus, the achievable packet throughput (capacity) for uniform traffic. In this paper, we analyze the capacity of bidirectional optical ring networks, such as RPR, employing SP routing for multicast (nonuniform) hotspot traffic (whereby unicast and broadcast are considered as special cases of multicast). We find that, when the traffic originating at the hotspot exceeds a critical threshold, then SP routing leads to substantial reductions in capacity to a value close to one simultaneous packet transmission. To overcome this limitation of SP routing, we propose a simple combined SP/one-copy routing strategy that provides a capacity of at least two simultaneous packet transmissions.

Original languageEnglish (US)
Pages (from-to)2638-2652
Number of pages15
JournalJournal of Lightwave Technology
Volume25
Issue number9
DOIs
StatePublished - Sep 1 2007

    Fingerprint

Keywords

  • Hotspot traffic
  • Multicast
  • Packet throughput
  • Shortest path (SP) routing
  • Spatial reuse

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

an der Heiden, M., Sortais, M., Scheutzow, M., Reisslein, M., Seeling, P., Herzog, M., & Maier, M. (2007). Multicast capacity of optical packet ring for hotspot traffic. Journal of Lightwave Technology, 25(9), 2638-2652. https://doi.org/10.1109/JLT.2007.902092