Journal of Northeastern University Natural Science ›› 2018, Vol. 39 ›› Issue (2): 166-171.DOI: 10.12068/j.issn.1005-3026.2018.02.004

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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
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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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