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作 者:杨晓雪 胡冰 Yang Xiaoxue;Hu Bing(College of Information Science and Electronic Engineering,Zhejiang University,Hangzhou 310027,Zhejiang,China;Intelligent Network Research Institute,Zhejiang Lab,Hangzhou 310027,Zhejiang,China)
机构地区:[1]浙江大学信息与电子工程学院,浙江杭州310027 [2]之江实验室智能网络研究院,浙江杭州310027
出 处:《光学学报》2022年第16期36-43,共8页Acta Optica Sinica
基 金:国家重点研发计划(2019YFB1802905);国家自然科学基金面上项目(61971377);浙江省自然科学基金重点项目(LZ22F010008)。
摘 要:数据中心面临带宽与能耗的双重挑战,光交换具有高带宽、低功耗和透明传输等优势,是一种极具前景的解决方案。针对Clos架构中使用电缓存所引起的高能耗与高延迟问题,提出了一种基于Ring-Clos的全光交换架构,通过级内连接与可调波长转换器为光分组提供相邻中间级路由,解决了部分输入级或中间级输出端口冲突的问题。利用并行匹配调度算法为光分组分配路径,算法复杂度低,硬件实现简单。仿真结果表明,所提架构的丢包率仅为Clos架构的48.81%,有效提高了网络性能。Data centers are facing dual challenges from bandwidth and energy consumption,for which optical switching is a promising solution owing to its advantages of high bandwidth,low power consumption,and transparent transmission.Considering the high energy consumption and long delay caused by the electronic buffers used in the Clos architecture,an all-optical switching architecture based on Ring-Clos is proposed.Routing between adjacent central modules is provided for optical packets by employing intra-stage connection and tunable wavelength converters,thereby solving the output port conflict problem at certain input or central modules.Meanwhile,the concurrent dispatching for Ring-Clos switch scheduling algorithm is applied to distribute routes for optical packets as it has low complexity and simple hardware implementation.The simulation results show that the packet loss rate of the proposed architecture is as low as 48.81%of that of the Clos architecture,which means the proposed architecture effectively improves the network performance.
关 键 词:光通信 数据中心网络 光交换 Clos架构 竞争解决 丢包率
分 类 号:TP308[自动化与计算机技术—计算机系统结构]
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