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Journal of Optical Communications and Networking

Journal of Optical Communications and Networking

  • Editor: Richard A. Linke
  • Vol. 3, Iss. 11 — Nov. 1, 2004
  • pp: 787–801

Dual control packets in optical burst switching networks

Hailong Li, Kim Ling, Ian Thng, and Malvin Wei Tan  »View Author Affiliations


Journal of Optical Networking, Vol. 3, Issue 11, pp. 787-801 (2004)
http://dx.doi.org/10.1364/JON.3.000787


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Abstract

Previous research has demonstrated that in a single IP-over-optical burst switched WDM (OBSWDM) node, higher-priority bursts can be successfully isolated from lower-priority bursts according to a certain user-defined isolation degree. This is achieved by allocating longer offset times (i.e., the time between the arrival of the control packet and the burst) to higher-priority bursts where the longer the offset time, the higher the degree of isolation. However, this creates a catch-22 situation in which quality of service (QoS) is achieved at the expense of a serious degradation in system performance. We present what we believe is a novel dual control-packet OBS system that aims to reduce the loss probability of the single control-packet OBS system owing to priority definitions. The dual control-packet scheme maintains the same QoS isolation degree as the single control-packet scheme but with a much reduced drop probability for lower-priority packets. Under 75% loading conditions, the drop probability for low-priority packets in the dual control QoS scheme ranges from 10 to 5 times lower compared with the single control-packet scheme depending on the situation and the presence of fiber delay lines (FDLs). The dual control-packet system is also shown to exhibit a smaller complexity measure compared with the single control-packet system for moderate loading conditions.

© 2004 Optical Society of America

OCIS Codes
(060.2330) Fiber optics and optical communications : Fiber optics communications
(060.4250) Fiber optics and optical communications : Networks

ToC Category:
RESEARCH PAPERS

History
Original Manuscript: June 28, 2004
Revised Manuscript: June 26, 2004
Published: October 15, 2004

Citation
Hailong Li, Kim Ling, Ian Thng, and Malvin Wei Tan, "Dual control packets in optical burst switching networks," J. Opt. Netw. 3, 787-801 (2004)
http://www.opticsinfobase.org/jocn/abstract.cfm?URI=jon-3-11-787

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