Seamlessly transformable hybrid packet and circuit switching for eff icient optical networks
Seamlessly transformable hybrid packet and circuit switching for eff icient optical networks
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DOI：
10.3788/col201311.010601
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发表时间：
2013
影响因子：
3.5
通讯作者：
Weiqiang Sun;P. Li;Chao Li;Weisheng Hu
中科院分区：
文献类型：
--
作者：
Weiqiang Sun;P. Li;Chao Li;Weisheng Hu
在过去的十年里，实现全光分组交换的努力势不可挡。虽然从长远来看，光分组交换仍然是一种有吸引力的交换范例，但技术挑战使其无法在未来几年内成为满足不断增长的带宽需求的实用解决方案。寻找一种技术上可行的方法，以良好的可伸缩性和灵活性满足不断增长的容量需求，成为社区的明确追求。分组与电路混合交换是一种很有前途的低成本、低能耗的高性能交换技术，它充分利用了分组交换和电路交换的优点。本文对混合光分组与电路交换的研究现状进行了综述。讨论了实现光分组与电路混合交换的关键技术挑战。我们进一步介绍了我们正在进行的努力，建立一个无缝转换的分组/电路交换节点与混合光学和电子元件。在混合节点中，使用典型调度算法的调度复杂度可以降低到全分组交换模式下节点的一半。
Efforts in realizing all-optical packet switching are overwhelming in the past decade. While optical packet switching remains an attractive switching paradigm in the long run, technical challenges prohibit it from becoming a practical solution for the ever-growing bandwidth hunger during the next few years. Finding a technically viable way to meet the increasing capacity requirement with good scalability and flexibility becomes a clear pursue for the community. Hybrid packet and circuit switching is considered to be one promising technique in realizing high performance switching at low cost and less energy consumption, by taking the advantage of both packet switching and circuit switching. In this paper, we review existing work in hybrid optical packet and circuit switching. We discuss the key technical challenges in realizing hybrid optical packet and circuit switching. We further introduce our ongoing efforts in building a seamlessly transformable packet/circuit-switching node with hybrid optical and electronic components. We show that in a hybrid node, the scheduling complexity with typical scheduling algorithms may be reduced to half of a node running in full packet switching mode.