Neighbor-Referencing Cooperative Cache Policy in Content-Centric Network

In-network caching is one of the key aspects of content-centric network (CCN), while the cache replacement algorithm of LRU does not consider the relation between the cache contents and its neighbor nodes in the cache replacement process, which reduced the efficiency of the cache. In this paper, a Neighbor-Referencing Cooperative Cache Policy (NRCCP) in CCN has been proposed to prevent neighbors cache the same content. Node will cache the content while none of its neighbors has cached it, thus reduce redundancy of cached content and increase the variety of contents in the network. Our results show that NRCCP has better performance, as the network path had greater caching ability and denser content popularity distributed.