基于深度布隆过滤器的NDN网络三级名字查找方法

吴庆涛; 师君如; 张明川; 王倩玉; 朱军龙; 张宏科

doi:10.11999/JEIT200766

基于深度布隆过滤器的NDN网络三级名字查找方法

doi: 10.11999/JEIT200766

1.
河南科技大学信息工程学院洛阳 471023
2.
北京交通大学下一代互联网互联设备国家工程实验室北京 100044

基金项目: 国家自然科学基金(61871430, 61976243)，中原科技创新领军人才(214200510012)，河南省教育厅基础研究专项(19zx010)，河南省教育厅重点科研项目(20A520011)

详细信息

作者简介:
吴庆涛：男，1975年生，教授，研究方向为云计算、物联网、下一代网络

师君如：女，1997年生，硕士生，研究方向为信息中心网络

张明川：男，1977年生，教授，研究方向为物联网、下一代网络、机器学习

王倩玉：女，1991年生，硕士生，研究方向为信息中心网络

朱军龙：男，1982年生，副教授，研究方向为人工智能、机器学习、新型网络

张宏科：男，1957年生，教授，研究方向为下一代网络、智慧协同网络

通讯作者:
张明川　zhang_mch@haust.edu.cn

中图分类号: TN919.2; TP393
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- 被引次数: 0
出版历程
- 收稿日期: 2020-08-27
- 修回日期: 2021-09-24
- 网络出版日期: 2021-10-22
- 刊出日期: 2021-12-21

A Three-level Name Lookup Method Based on Deep Bloom Filter for Named Data Networking

1.
School of Information Engineering, Henan University of Science and Technology, Luoyang 471023, China
2.
National Engineering Laboratory for Next Generation Internet Interconnection Devices, Beijing Jiaotong University, Beijing 100044, China

Funds: The National Natural Science Foundation of China (61871430, 61976243), The Leading Talents of Science and Technology in the Central Plain of China (214200510012), The Basic Research Projects in the University of Henan Province (19zx010), The Key Project of the Education Department Henan Province (20A520011)

摘要

摘要: 为提高命名数据网络(Name Data Networking, NDN)路由过程中内容名字查找的效率，该文提出一种基于深度布隆过滤器的3级名字查找方法。该方法使用长短记忆神经网络(Long Short Term Memory, LSTM)与标准布隆过滤器相结合的方法优化名字查找过程；采用3级结构优化内容名字在内容存储器(Content Store, CS)、待定请求表(Pending Interest Table, PIT)中的精确查找过程，提高查找精度并降低内存消耗。从理论上分析了3级名字查找方法的假阳性率，并通过实验验证了该方法能够有效节省内存、降低查找过程的假阳性。
- 命名数据网络 /
- 内容名字查找 /
- 深度布隆过滤器 /
- 内存消耗
Abstract: A three-level name lookup method based on deep Bloom filter is proposed to improve the searching efficiency of content name in the routing progress of the Named Data Networking (NDN). Firstly, in this method, the Long Short Term Memory (LSTM) is combined with standard Bloom filter to optimize the name searching progress. Secondly, a three-level structure is adopted to optimize the accurate content name lookup progresses in the Content Store (CS) and the Pending Interest Table (PIT) to promote lookup accuracy and reduce memory consumption. Finally, the error rate generated by content name searching method based on deep Bloom filter structure is analyzed in theory, and the experiment results prove that the proposed the three-level lookup structure can compress memory and decrease the error effectively.
- Named Data Networking (NDN) /
- Content name lookup /
- Deep Bloom filter /
- Memory consumption

HTML全文

图 1 深度布隆过滤器查找结构

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图 2 学习模型结构

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图 3 名字字符串长度分布

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图 4 初始过滤器系数选择对假阳性率的影响

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图 5 GRU大小对假阴性率和假阳性率的影响

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图 6 阈值τ大小对假阳性率和假阴性率的影响

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图 7 假阳性率

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图 8 内存消耗

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表 1 面向深度布隆过滤器的名字查找算法

输入：内容集合S，非内容集合U，阈值$\tau $
输出：内容名字x
1: 调用LSTM架构使用集合S和集合U获得一个集合D；
2: 查找x在初始过滤器中进行精确匹配；
3: while 对每一个$x \in S$ do
4：　If b[i]=1 then
5: 　　将匹配内容x发送到深度学习模型中；
6: 　else
7：　　将未匹配的x发送到FIB表中进行最长前缀匹配查找；
8: end while
9: if $(x, y) \in D $ then//在第2级深度学习模型中进行精确匹配查找
10:　计算$f(x)=\dfrac{1}{1+{ \rm{e} }^{-x} }$；
11: end if
12: if $x \in S $且$ f(x) < \tau $ then
13:　将查找获得的内容名x在路由表中对应的数据包进行转发；
14: else if $x \in S $且$f(x) < \tau $ then
15:　将未匹配的内容名字x发送到第3级备份过滤器进行查找；
16:　while在备份布隆过滤器查找b[i]=1 do
17:　　将查找获得的内容名x在路由表中对应的数据包进行转发；
18:　end while
19: else
20:　将第3级未匹配的内容发送到FIB表中进行最长前缀匹配查找；
21: end if

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表 2 服务器配置

主要模块	具体配置
主板	LENOVO-LNVNB161216
CPU	Intel Core™ i7-9750H (6核，主频2.60 GHz)
内存	DDR4 8GB (内存频率 2667 MHz)

下载: 导出CSV

表 3 GRU和隐藏层参数配置与编号

配置编号	参数配置	配置编号	参数配置	配置编号	参数配置
I型	GRU大小=32，隐藏层大小=8	IV型	GRU大小=16，隐藏层大小=8	VII型	GRU大小=8，隐藏层大小=4
II型	GRU大小=32，隐藏层大小=4	V型	GRU大小=16，隐藏层大小=4	VIII型	GRU大小=4，隐藏层大小=4
III型	GRU大小=16，隐藏层大小=16	VI型	GRU大小=8，隐藏层大小=8	VIIII型	GRU大小=4，隐藏层大小=8

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