Scheduling Based on Minimal Conversion Degree With Respect to Wavelength Conversion and Coding in Optical Multicast Node

Scheduling Based on Minimal Conversion Degree With Respect to Wavelength Conversion and Coding in Optical Multicast Node
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光组播节点中基于最小转换度的波长转换和编码调度

DOI:
10.1109/lcomm.2014.2356457
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发表时间:
2014-09
期刊:
Ieee Communications Letters
影响因子:
--
通讯作者:
Huang, Sheng
Huang, Sheng
中科院分区:
其他
文献类型:
--
作者:
Hu, Xiaohui;Chen, Yong;Hu, Ting;Huang, Sheng

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随着光组播在交换节点中的复制和转发量的增加,光组播冲突的发生也越来越频繁。本文提出了一种基于波长转换和网络编码的光组播交换节点结构。提出的节点结构使用一组输出共享波长转换器在波长域和一组反馈共享编码器,以解决光组播冲突。为了最小化总转换度,我们提出了一种改进的算法,最大加权稳定集,分配波长转换器的波长转换度作为权重。具体地说,利用图着色匹配算法选择波长转换度最小的波长转换器。分析和仿真结果表明,与两层波长转换和全波长转换的节点结构相比,该节点结构在降低波长转换成本的同时,大大降低了丢包率,并具有更好的解决组播冲突的性能。
Optical multicast collision occurs more frequently for the replication and forwarding of optical multicast increase in the switch node. In this letter, an optical multicast switching node architecture configured with wavelength conversion and network coding is proposed. The proposed node architecture uses a group of output shared wavelength converters in the wavelength domain and a group of feedback shared encoders to resolve the optical multicast collision. To minimize the total conversion degree, we propose an improved algorithm, maximal weighted stable set, to assign wavelength converter with respect to the wavelength conversion degree as the weight. Concretely, the graph coloring matching algorithm is used to select the wavelength converter with minimal wavelength conversion degrees. Compared with the node architecture with two layers wavelength conversion and with full range wavelength conversion, analyses and simulation results show that the proposed node architecture largely reduces the packet loss probability with low cost of wavelength conversion and results in a better performance to solve multicast collision.
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发表时间: 2013-11
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影响因子: 3.1
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