一种基于哈希编码的内容路由查询匹配机制
基于名字的路由查找是命名数据网络(NDN)的一个关键技术,但由于NDN名字层次化的结构以及无限制的长度,使得查询匹配的实现具有很大的挑战性。提出一种有效的元素哈希编码机制,首先利用哈希函数压缩数据名字,然后采用改进的状态转换阵列实现名称最长前缀的快速匹配,最后设计一种快速的增量更新机制,满足NDN转发过程中频繁地插入、修改与删除等操作。仿真结果表明,提出的方法使路由条目压缩率达到40%以上,匹配速率提高约10%。...
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Published in | 计算机应用研究 Vol. 31; no. 10; pp. 3081 - 3086 |
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Main Author | |
Format | Journal Article |
Language | Chinese |
Published |
国家数字交换系统工程技术研究中心,郑州,450002
2014
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Subjects | |
Online Access | Get full text |
ISSN | 1001-3695 |
DOI | 10.3969/j.issn.1001-3695.2014.10.048 |
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Summary: | 基于名字的路由查找是命名数据网络(NDN)的一个关键技术,但由于NDN名字层次化的结构以及无限制的长度,使得查询匹配的实现具有很大的挑战性。提出一种有效的元素哈希编码机制,首先利用哈希函数压缩数据名字,然后采用改进的状态转换阵列实现名称最长前缀的快速匹配,最后设计一种快速的增量更新机制,满足NDN转发过程中频繁地插入、修改与删除等操作。仿真结果表明,提出的方法使路由条目压缩率达到40%以上,匹配速率提高约10%。 |
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Bibliography: | 51-1196/TP Name-based routing lookup is a key technology for named data networking(NDN). However, due to the hierarchi- cal structure and unlimited length of the NDN name, the realization of the lookup match has a great challenge. This paper presented an effective component hash encoding mechanism. Firstly, it compressed data names using hash function. Secondly, it realized a rapid longest prefix matching of names by adopting improved state transition array. Finally, it proposed a fast in- cremental upadate mechanism to meet the modify and delete operations in NDN forwarding process. Simulation results show that the routing entries compression ratio achieves 40% and matching rate increases by 10%. NDN ; content routing ; routing lookup ; hash coding DU Chuan-zhen, LAN Ju-long, TIAN Ming (National Digital Switching System Engineering Technological R&D Center, Zhengzhou 450002, China) |
ISSN: | 1001-3695 |
DOI: | 10.3969/j.issn.1001-3695.2014.10.048 |