Achieving Shared Protection for Dynamic Multicast Sessions in Survivable Mesh WDM Networks
Achieving Shared Protection for Dynamic Multicast Sessions in Survivable Mesh WDM Networks
复制标题
在可存活网状 WDM 网络中实现动态组播会话的共享保护
DOI：
10.1109/jsac-ocn.2007.025206
复制
发表时间：
2007-12
影响因子：
16.4
通讯作者：
中科院分区：
文献类型：
--
作者：
波分复用（WDM）技术的发展有望促进带宽密集型多播应用。然而，在这样的网络中的单个光纤故障可以中断在基于“光树”的多播会话中到若干目的地节点的信息传播。因此，保护组播会话势在必行。在本文中，我们提出了一种新的保护方案，称为组播保护通过生成路径（MPSP），资源有效的组播保护与备用容量共享。这里，生成路径是从多播树的叶节点到任何其他叶节点的路径。MPSP的核心思想是首先为每条生成路径确定一条备用路径，然后适当地选择这些备用路径中的部分来保护主组播树，从而将总带宽分配给主组播树及其保护路径（或树等）被最小化。虽然以前的研究只考虑自我共享和请求内共享，据我们所知，这是第一次考虑到备用容量的请求间共享时，保护动态组播会话。我们使用模拟来证明MPSP方案的性能。它示出了显着的性能改善，实现了每个组播会话的平均成本和阻塞概率。与现有方案相比，该方案的平均代价降低了约22%，阻塞概率平均降低了约27%。
The advances in wavelength-division multiplexing (WDM) technology are expected to facilitate bandwidth-intensive multicast applications. A single fiber failure in such a network, however, can disrupt the information dissemination to several destination nodes in a "Iight-tree"-based multicast session. Thus it is imperative to protect the multicast sessions. In this paper, we propose a novel protection scheme, called multicast protection through spanning paths (MPSP), for resource efficient multicast protection with spare capacity sharing. Here, a spanning path is a path from a leaf node to any other leaf node of a multicast tree. The key idea of MPSP is first to identify a backup path for each spanning path and then to appropriately select parts of these backup paths to protect the primary multicast tree, so that the total bandwidth allocated to the primary multicast tree and its protection paths (or trees, etc.) is minimized. While previous studies only consider self-sharing and intra-request sharing, to the best of our knowledge, this is the first time to take inter-request sharing of spare capacity into consideration when protecting dynamic multicast sessions. We use simulations to demonstrate the performance of the MPSP scheme. It is shown that significant performance improvements are achieved in terms of average cost per multicast session and blocking probability. Compared with existing schemes, the average cost is reduced by about 22% and the blocking probability can be reduced by about 27% in average.
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DOI：
--
发表时间：
1999
期刊：
--
影响因子：
--
作者：
R. Melhem;T. Znati;Tawfig Alrabiah
通讯作者：
R. Melhem;T. Znati;Tawfig Alrabiah
影响因子：
2.1
作者：
Norbert Ascheuer;M. Fischetti;M. Grötschel
通讯作者：
Norbert Ascheuer;M. Fischetti;M. Grötschel
DOI：
10.1109/icc.1997.605230
发表时间：
1997-06
期刊：
Proceedings of ICC'97 - International Conference on Communications
影响因子：
--
作者：
Cheng-Shong Wu;Steven S. W. Lee;Y. Hou
通讯作者：
Cheng-Shong Wu;Steven S. W. Lee;Y. Hou
影响因子：
2.7
作者：
K. Dowsland
通讯作者：
K. Dowsland
影响因子：
--
作者：
Hongbin Luo;Le Min Li;Hongfang Yu
通讯作者：
Hongbin Luo;Le Min Li;Hongfang Yu