东北大学学报:自然科学版 ›› 2018, Vol. 39 ›› Issue (2): 166-171.DOI: 10.12068/j.issn.1005-3026.2018.02.004

• 信息与控制 • 上一篇    下一篇

基于缓存开销的信息中心网络缓存协作策略

蔡凌1, 汪晋宽2, 王兴伟3, 韩来权4   

  1. (1. 东北大学秦皇岛分校 控制工程学院, 河北 秦皇岛066004; 2. 东北大学 信息科学与工程学院, 辽宁 沈阳110819; 3. 东北大学 软件学院, 辽宁 沈阳110169; 4. 东北大学秦皇岛分校 计算机与通信工程学院, 河北 秦皇岛066004)
  • 收稿日期:2016-08-10 修回日期:2016-08-10 出版日期:2018-02-15 发布日期:2018-02-09
  • 通讯作者: 蔡凌
  • 作者简介:蔡凌(1980-),女,湖南武冈人,东北大学秦皇岛分校讲师,博士; 汪晋宽(1957-),男,辽宁沈阳人,东北大学教授,博士生导师; 王兴伟(1968-),男,辽宁盖州人,东北大学教授,博士生导师.
  • 基金资助:
    国家杰出青年科学基金资助项目(61225012,71325002); 河北省高等学校科学技术研究项目(QN2014327).

Cooperative Caching Strategy Based on Cache Cost for Information-Centric Networking

CAI Ling1, WANG Jin-kuan2, WANG Xing-wei3, HAN Lai-quan4   

  1. 1. School of Control Engineering, Northeastern University at Qinhuangdao, Qinhuangdao 066004, China; 2. School of Information Science & Engineering,Northeastern University,Shenyang 110819, China; 3. School of Software, Northeastern University, Shenyang 110169, China; 4. School of Computer and Communication Engineering, Northeastern University at Qinhuangdao, Qinhuangdao 066004, China.
  • Received:2016-08-10 Revised:2016-08-10 Online:2018-02-15 Published:2018-02-09
  • Contact: CAI Ling
  • About author:-
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摘要: 网络化缓存策略影响ICN网络的传输性能,考虑到缓存执行时的开销不仅包含访问缓存节点时的路径代价,还应包含替换旧信息的替换代价,因此提出一种基于路径访问代价和节点替换代价的缓存协作策略(path and node cost based cooperative caching strategy, 简称PNC3S).该策略对两种代价进行整体考虑,将代价总量作为是否进行信息与节点匹配缓存的依据,对提出的策略模型进行优化分析,将最优解作为缓存部署方案.实验结果表明,与CEE,LCD策略相比,PNC3S可以改善网络的信息缓存率、服务器的负载率、网络链路平均利用率,以及访问跳数减少率.

关键词: 信息中心网络, 缓存网络, 缓存开销, 缓存策略, 优化算法

Abstract: In-network caching is one of the core issues in information-centric networking (ICN) which will directly restrict the data dissemination performance of the network. Considering the cache cost contains not only the path cost raised by accessing a cache node on the path but also the replacement cost of old information, a path and node cost based cooperative caching strategy (PNC3S) is proposed. The PNC3S considers the path cost and replacement cost comprehensively, and whether information matches a node or not depends on the total cost. Then the optimization algorithm is introduced into the proposed strategy to make caching decision. The simulation experiments demonstrate that the proposed PNC3S, compared with CEE (cache everything everywhere) and LCD (leave copy down), improves such performance as cached information ratio, server load ratio, average link utilization ratio and hop reduction ratio.

Key words: information-centric networking (ICN), caching network, cache cost, caching strategy, optimization algorithm

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