引用本文:马蕾, 胡晨光, 张婷, 许兆一, 刘银龙.内容中心网络中基于AHP和GRA的路由策略[J].西南大学学报(自然科学版),2019,41(10):125~132
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内容中心网络中基于AHP和GRA的路由策略
马蕾, 胡晨光, 张婷, 许兆一, 刘银龙1,2,3
1. 北京电子科技职业学院 电信工程学院, 北京 100176;2. 北京建筑大学 电气与信息工程学院, 北京 100044;3. 中国科学院 信息工程研究所, 北京 100093
摘要:
多径路由是内容中心网络(Content Centric Networking,CCN)的关键技术之一,能够充分利用网络中的内容副本,降低内容服务器负载和内容获取时延.然而,多径路由在优化网络性能的同时,会带来网络流量冗余,降低网络资源利用率.为了提高CCN中路径选择的精准性,提出了一种基于层次分析(Analytic Hierarchy Process,AHP)和灰度关联分析(Grey Relation Analysis,GRA)的路由策略.首先,分析CCN中影响路由性能的各种因素,并利用AHP确定各因素的权重.然后,利用GRA对可用路径进行排序,并选择最佳的转发路径.仿真结果表明,与已有路由策略相比,所提路由策略在服务器负载、缓存替换率等方面具有较好的性能.
关键词:  内容中心网络  路由  层次分析法  灰度关联分析
DOI:10.13718/j.cnki.xdzk.2019.10.017
分类号:TN915.1
基金项目:国家自然科学基金项目(61303251);北京电子科技职业学院科技重点课题(2017Z001-002-KXZ).
Routing Strategy in Content-Centric Networking Based on AHP and GRA
MA Lei, HU Chen-guang, ZHANG Ting, XU Zhao-yi, LIU Yin-long1,2,3
1. College of Telecom Engineering, Beijing Polytechnic, Beijing 100176, China;2. School of Electric and Information Engineering, Beijing University of Civil Engineering and Architecture, Beijing 100044, China;3. Institute of Information Engineering, Chinese Academy of Sciences, Beijing 100093, China
Abstract:
Multipath routing is one of the key technologies of Content-Centric Networking (CCN), which can make full use of content copies in the network and reduce content server overload and content acquisition delay. However, while optimizing network performance, multipath routing will bring network traffic redundancy and reduce network resource utilization. In order to improve the accuracy of path selection in CCN, a routing strategy based on Analytic Hierarchy Process (AHP) and Grey Relation Analysis (GRA) is proposed in this paper. First, various factors affecting routing performance in CCN are analyzed, and the weight of each factor is determined based on AHP. Then, GRA is used to sort the available paths and choose the best forwarding path. The simulation results show that compared with the existing routing strategies, the proposed routing strategy has better performance in terms of server overload and cache replacement rate.
Key words:  content-centric networking (CCN)  routing  analytic hierarchy process (AHP)  grey relation analysis (GRA)
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