Virtual-node-based multicast routing and wavelength assignment in sparse-splitting optical networks

被引：3
作者：
Park, Ju-Won [1 ]
Lim, Huhnkuk [2 ]
Kim, JongWon [1 ]
机构：
[1] Gwangju Inst Sci & Technol, Networked Media Lab, Dept Informat & Commun, Kwangju 500712, South Korea
[2] Korea Inst Sci & Technol Informat, Taejon, South Korea
来源：
PHOTONIC NETWORK COMMUNICATIONS | 2010年 / 19卷 / 02期
关键词：
Sparse-splitting optical networks; Multicast routing and wavelength assignment; Virtual-node; Hierarchy-based approach; End-to-end delay; WDM NETWORKS; PERFORMANCE; PLACEMENT;
D O I：
10.1007/s11107-009-0223-9
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
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.
引用
收藏
页码：182 / 191
页数：10
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