Virtual-node-based multicast routing and wavelength assignment in sparse-splitting optical networks |
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Authors: | Ju-Won Park Huhnkuk Lim JongWon Kim |
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Affiliation: | (1) Key Lab of Broadband Optical Fiber Transmission and Communication Networks, University of Electronics Science and Technology of China, Chengdu, 610054, China |
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Abstract: | This paper investigates several problems associated with optical multicast routing and wavelength assignment in sparse-splitting
optical networks for interactive real-time media distribution. Unfortunately, the constrained multicast routing with optimized
wavelength assignment leads to NP-complete condition. Thus, in this paper, a virtual-node-based multicast routing algorithm
is first proposed to satisfy the requirements of interactive real-time multicasting as well as the constraints from underlying
optical networks. For the constructed multicast tree, we then associate an effective wavelength assignment algorithm. The
experimental results show that the proposed algorithm combination performs well in terms of (1) the wavelength channel cost,
(2) the maximum variation of inter-destination node delays, (3) the signal quality, and (4) the number of wavelength conversions. |
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Keywords: | |
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