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基于布鲁姆过滤器算法和三态内容寻址存储器的高效范围匹配方法

戴紫彬 刘航天

戴紫彬, 刘航天. 基于布鲁姆过滤器算法和三态内容寻址存储器的高效范围匹配方法[J]. 电子与信息学报, 2016, 38(8): 1872-1879. doi: 10.11999/JEIT151264
引用本文: 戴紫彬, 刘航天. 基于布鲁姆过滤器算法和三态内容寻址存储器的高效范围匹配方法[J]. 电子与信息学报, 2016, 38(8): 1872-1879. doi: 10.11999/JEIT151264
DAI Zibin, LIU Hangtian. Efficient Range Matching Method Based on Bloom Filter and Ternary Content Addressable Memory[J]. Journal of Electronics & Information Technology, 2016, 38(8): 1872-1879. doi: 10.11999/JEIT151264
Citation: DAI Zibin, LIU Hangtian. Efficient Range Matching Method Based on Bloom Filter and Ternary Content Addressable Memory[J]. Journal of Electronics & Information Technology, 2016, 38(8): 1872-1879. doi: 10.11999/JEIT151264

基于布鲁姆过滤器算法和三态内容寻址存储器的高效范围匹配方法

doi: 10.11999/JEIT151264

Efficient Range Matching Method Based on Bloom Filter and Ternary Content Addressable Memory

  • 摘要: 该文基于布鲁姆过滤器算法和三态内容寻址存储器(Ternary Content Addressable Memory, TCAM)技术提出一种高效范围匹配方法,解决了目前TCAM范围匹配方案存在的存储利用率低、功耗大的问题。设计基于最长共同前缀的分段匹配算法(Segmented Match on Longest Common Prefix, SMLCP)将范围匹配拆分为前缀匹配和特征区间比对两步,TCAM空间利用率达到100%。根据SMLCP算法设计了BF-TCAM模型,使用布鲁姆过滤器对关键字过滤,屏蔽无关项参与比较,大幅降低功耗。使用流水线缩短关键路径长度,使查找操作在一个时钟周期内完成。研究结果表明,所提方法实现了零范围扩张,工作功耗较传统TCAM降低50%以上。
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出版历程
  • 收稿日期:  2015-11-10
  • 修回日期:  2016-03-21
  • 刊出日期:  2016-08-19

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