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Journal of Lightwave Technology

Journal of Lightwave Technology

| A JOINT IEEE/OSA PUBLICATION

  • Vol. 23, Iss. 10 — Oct. 1, 2005
  • pp: 3178–

Multicast Traffic Grooming in Wavelength-Routed WDM Mesh Networks Using Dynamically Changing Light-Trees

Xiaodong Huang, Farid Farahmand, and Jason P. Jue

Journal of Lightwave Technology, Vol. 23, Issue 10, pp. 3178- (2005)


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Abstract

In this paper, we address the online multicast traffic grooming problem in wavelength-routed wavelength division multiplexing (WDM) mesh networks with sparse grooming capability. We develop a multicast dynamic light-tree grooming algorithm (MDTGA) that can support multihop traffic grooming by taking advantage of light-trees. In this algorithm, a light-tree can be dropped, branched, and extended when a route is to be established for a new request; a light-tree can also be contracted when some branches carry no effective traffic after requests depart from the network. The difficulty of the algorithm lies in the dynamic characteristic of light-trees. We implement MDTGA on a new auxiliary-graph model. For the purpose of comparison, we also implement a lightpath-based grooming algorithm by putting a constraint on the optical-splitting capability of the nodes. Through extensive simulations, we find that MDTGA has much better performance than the lightpath-based algorithm.

© 2005 IEEE

Citation
Xiaodong Huang, Farid Farahmand, and Jason P. Jue, "Multicast Traffic Grooming in Wavelength-Routed WDM Mesh Networks Using Dynamically Changing Light-Trees," J. Lightwave Technol. 23, 3178- (2005)
http://www.opticsinfobase.org/jlt/abstract.cfm?URI=jlt-23-10-3178


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