关键词: ICN,启发式路由,回溯,缓存,流行度,CS命中率

Abstract: Internet has become a social infrastructure.The current Internet architecture based on TCP/IP is faced with many challenges.This fact makes the clean slate design of future Internet architecture represented by Information-Centric Networking (ICN) become a hot research topic.In this paper,a heuristic routing mechanism in ICN was proposed.On the basis of name-based routing,a procedure was devised to look for other available interface through which the backtracking-condition-met interest packet will be forwarded,which can reduce the network blocking rate.Moreover,Forwarding Information Base (FIB) of neighbor nodes will be modified when data packets go through a router,which can realize the efficient use of cache.In addition,a concept of "popularity" was introduced to improve the Content Store (CS) hit rate.The proposed routing mechanism was implemented on INTERNET2 by simulation.The experimental results show that it is feasible and effective.

Key words: ICN,Heuristic routing,Backtracking,Cache,Popularity,CS hit rate