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首页> 外文期刊>Information Sciences: An International Journal >A novel ring-tree-based routing and wavelength assignment algorithm for multicasting in DWDM optical mesh networks
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A novel ring-tree-based routing and wavelength assignment algorithm for multicasting in DWDM optical mesh networks

机译：一种新颖的基于环树的路由和波长分配算法，用于DWDM光网状网络中的组播

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Multicast session communications, such as video-conferencing and video-broadcasting, in DWDM mesh networks require the efficient multipoint-to-multipoint multicast algorithms. Several heuristics have approximate solutions using lightpath or light-tree for one-to-multipoint multicast communications, but few papers have discussed the multipoint-to-multipoint multicast problems in DWDM mesh networks. This paper proposes a ring-tree-based routing and wavelength assignment (RTRWA) solution in DWDM mesh networks. It proceeds to multipoint-to-multipoint multicast transmission by reserving links and wavelengths assigned by the Least Converter Count algorithm. The RTRWA algorithm tries to find an optimal ring path that connects all multicast session members with unidirectional links and connects the remaining nodes to the ring path with the light-tree. The RTRWA algorithm outperforms the Steiner minimal tree (SMT) algorithm in terms of the call blocking probability, difference in user capacity and the mean maximum transmission time. (C) 2007 Elsevier Inc. All rights reserved.
机译：DWDM网状网络中的多播会话通信，例如视频会议和视频广播，需要有效的多点到多点多播算法。几种启发式方法具有使用光路径或光树进行单点到多点多点传送通信的近似解决方案，但是很少有论文讨论DWDM网状网络中的多点到多点多点传送问题。本文提出了一种在DWDM网状网络中基于环树的路由和波长分配（RTRWA）解决方案。通过保留最少转换器计数算法分配的链路和波长，它可以进行多点到多点多播传输。 RTRWA算法试图找到一条最佳的环形路径，该路径将所有多播会话成员与单向链接连接起来，并将其余节点与带有轻树的环形路径连接起来。就呼叫阻塞概率，用户容量差异和平均最大传输时间而言，RTRWA算法的性能优于Steiner最小树（SMT）算法。 （C）2007 Elsevier Inc.保留所有权利。

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