| 一种可提供QoS保障的新型交换结构 |
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| 引用本文： | 伊鹏,汪斌强,郭云飞,李挥. 一种可提供QoS保障的新型交换结构[J]. 电子学报, 2007, 35(7): 1257-1263 |
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| 作者姓名： | 伊鹏 汪斌强 郭云飞 李挥 |
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| 作者单位： | 国家数字交换系统工程技术研究中心,河南郑州,450002;北京大学深圳研究生院,广东深圳,518055 |
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| 基金项目： | 国家高技术研究发展计划(863计划)信息技术领域重大专项基金，国家自然科学基金 |
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| 摘 要： | 本文采用带缓存交叉开关作为核心交换单元,构建了一种空分复用扩展的联合输入/交叉节点/输出排队(SDM-CICOQ)交换结构,从理论上证明了当扩展因子为2时,SDM-CICOQ交换结构可以获得100%的吞吐量,并且能够完全模拟输出排队(OQ)交换结构,从而能够提供服务质量(QoS)保障.本文还给出了一种层次化优先级调度(HPS)方案作为SDM-CICOQ交换结构调度机制的工程设计参考,仿真结果表明采用HPS调度方案SDM-CICOQ交换结构可获得良好的性能.
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| 关 键 词： | 交换结构 服务质量 带缓存交叉开关 调度 优先级 |
| 文章编号： | 0372-2112（2007）07-1257-07 |
| 收稿时间： | 2006-05-16 |
| 修稿时间： | 2006-05-16 |
Providing QoS Guarantees in a Novel Switch Architecture |
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| YI Peng,WANG Bin-qiang,GUO Yun-fei,LI Hui. Providing QoS Guarantees in a Novel Switch Architecture[J]. Acta Electronica Sinica, 2007, 35(7): 1257-1263 |
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| Authors: | YI Peng WANG Bin-qiang GUO Yun-fei LI Hui |
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| Affiliation: | 1. NDSC,Zhengzhou,Henan 450002,China;2. Shenzhen Graduate School,Peking University,Shenzhen,Guangdong 518055,China |
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| Abstract: | Using buffered crossbar as a core switch fabric,we build a combined input-crosspoint-output queued switch with space-division multiplexing expansion(denoted as SDM CICOQ switch) in this paper.It is proved that an SDM CICOQ switch with an expansion factor 2 can achieve 100% throughput and exactly emulate an OQ switch.Thus,SDM CICOQ switches can provide QoS guarantees for traffic flows.For the simplicity of implementation,we also present a hierarchical priority scheduling(HPS) scheme as a reference designing for the scheduling policy of the SDM CICOQ switch.Simulation results show that the SDM CICOQ switch operating under the HPS scheduling scheme can obtain good performance. |
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| Keywords: | switch architecture quality of service(QoS) buffered crossbar scheduling priority |
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