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Journal of Optical Communications and Networking

Journal of Optical Communications and Networking

  • Editor: Keren Bergman
  • Vol. 7, Iss. 2 — Feb. 1, 2008
  • pp: 119–131

Fuzzy logic packet scheduling approach for QoS provision of delay-constrained traffic in synchronous optical packet switched networks

R. Razavi, E. Hugues-Salas, T. Quinlan, and S. D. Walker  »View Author Affiliations

Journal of Optical Networking, Vol. 7, Issue 2, pp. 119-131 (2008)

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We describe a fuzzy-logic-based scheduling algorithm for synchronous optical packet switches that provides quality of service for delay-constrained traffic. The proposed method considers both packet importance as well as delay constraints. One of the advantages of a fuzzy controller is the fact that, regardless of the design complexity, it can be implemented as a simple look-up table. This makes it ideal for high-speed optical switches. We have used two fuzzy controllers: one to select a packet to be forwarded to an output port and another to decide which packet(s) should be buffered or dropped. In a simulation example, video traffic with three priority classes is considered. The results show up to 3dBs of improvement in the quality of the received video, resulting from the packet loss differentiation achieved by employing the proposed fuzzy packet scheduling approach.

© 2008 Optical Society of America

OCIS Codes
(060.4259) Fiber optics and optical communications : Networks, packet-switched
(060.6719) Fiber optics and optical communications : Switching, packet

ToC Category:

Original Manuscript: September 13, 2007
Revised Manuscript: November 22, 2007
Manuscript Accepted: November 27, 2007
Published: January 10, 2008

R. Razavi, E. Hugues-Salas, T. Quinlan, and S. D. Walker, "Fuzzy logic packet scheduling approach for QoS provision of delay-constrained traffic in synchronous optical packet switched networks," J. Opt. Netw. 7, 119-131 (2008)

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  1. F. Callegati, G. Corazza, and C. Raffaelli, 'Exploitation of DWDM for optical packet switching with quality of service guarantees,' IEEE J. Sel. Areas Commun. 20, 190-201 (2002). [CrossRef]
  2. Y. Lee, N. Kim, J. Kim, J. Ahn, and M. Kang, 'Differentiated service in OBS networks using a dynamic FDL bank partitioning algorithm,' Opt. Express 15, 6113-6120 (2007). [CrossRef]
  3. H. Overby, 'Packet loss rate differentiation in slotted optical packet switched networks,' IEEE Photon. Technol. Lett. 17, 2469-2471 (2005).
  4. H. Harai and M. Murata, 'Prioritized buffer management in photonic packet switches for DiffServ assured forwarding,' in Proceedings of the 6th IFIP Working Conference on Optical Network Design and Modelling (ONDM, 2002), pp. 231-246.
  5. Q. Zhang, V. M. Vokkarane, B. Chen, and J. P. Jue, 'Early drop scheme for providing absolute QoS differentiation in optical burst-switched networks,' in Proceedings of IEEE High Performance Switching and Routing Workshop (HPSR) (IEEE, 2003), pp. 153-157.
  6. C. Develder, J. Cheyns, M. Pickavet, and P. Demeester, 'Service differentiation mechanisms for variable length packets in an optical switch with recirculating FDL buffer,' in Proceedings of Photonics in Switching Conference (PS, 2003), pp. 92-94.
  7. L. Li, J. Deogun, and S. Scott, 'Performance analysis of optical packet switches with a hybrid buffering architecture [invited],' J. Opt. Netw. 3, 433-449 (2004).
  8. K. Laevens and H. Bruneel, 'Analysis of a single-wavelength optical buffer,' in Proceedings of the Twenty-Second Annual Joint Conference of the IEEE Computer and Communications Societies (INFOCOM) (IEEE, 2003), Vol. 3, pp. 2262-2267.
  9. K. Laevens and H. Bruneel, 'Analysis of fiber delay line optical buffers,' in Proceedings of the Workshop on Next Generation Networks: Architecture, Protocols, Performance, Placencia, Belize, 11-12 March 2005.
  10. C. Develder, M. Pickavet, and P. Demeester, 'Choosing an appropriate buffer strategy for an optical packet switch with a feed-back FDL buffer,' in Proceedings of the 28th European Conference on Optical Communication (ECOC, 2002), Vol. 3, pp. 1-2.
  11. E. H. Mamdani and S. Assilian, 'An experiment in linguistic synthesis with a fuzzy logic controller,' Int. J. Man-Mach. Stud. 7, 1-13 (1975).
  12. J. Mitchell, W. Pennebaker, C. Fogg, and D. J. LeGall, MPEG Video Compression Standard (Digital Multimedia Standards Series) (Chapman and Hall, 1997).

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