Toward wireless backhaul using circuit emulation over optical packet-switched metro WDM ring network

I. Fen Chao, Maria C. Yuang

Research output: Contribution to journalArticlepeer-review

6 Scopus citations


Optical WDM metro-ring networks have been considered to be promising solutions for wireless backhaul. In this paper, we propose an integrated traffic control scheme (ITCS), which facilitates circuit emulation service (CES) for wireless backhaul over a previously proposed experimental optical packet-switched WDM metro-ring network, HOPSMAN. The ITCS seamlessly integrates variable-bit-rate (VBR) CES wireless with connection-less best-effort data, satisfying stringent QoS requirements and retaining maximal network throughput. The ITCS ensures efficient setup of CES connections by employing a simple mean-rate-based distributed admission control followed by a novel slot-marking reservation. The total connection setup delay is comprised of the setup queueing delay and slot-marking delay. While the slot-marking delay is nearly a ring time, the mean setup queueing delay is formally computed through an accurate approximation based on an M/G/m queueing analysis. We show simulation results to demonstrate that the ITCS accommodates remarkably high CES traffic loads while satisfying a wide range of delay requirements for wireless backhaul. Taking the background best-effort traffic into account, ITCS achieves exceedingly low delay, jitter, and delay bound for CES under various traffic loads and burstiness.

Original languageEnglish
Article number6579652
Pages (from-to)3032-3042
Number of pages11
JournalJournal of Lightwave Technology
Issue number18
StatePublished - 16 Sep 2013


  • Circuit Emulation Service (CES)
  • M/G/m queueing analysis
  • Medium Access Control (MAC)
  • Optical Packet Switching (OPS)
  • Wavelength Division Multiplexing (WDM)
  • Wireless Backhaul

Fingerprint Dive into the research topics of 'Toward wireless backhaul using circuit emulation over optical packet-switched metro WDM ring network'. Together they form a unique fingerprint.

Cite this