基于跨层信息的信息中心网络缓存算法研究

To improve the performance of information-centric networks (ICN), the optimal design of ICN caching algorithms was studied. In view of the fact that current ICN caching algorithms have the drawbacks of high content redundancy and low cache hit rate, a novel ICN caching algorithm based on cross-layer design, called CRCache, was proposed. The CRCache algorithm caches each specific content on its matchable router according to the correlation of the network layer's information and the application layer's information. The cross-layer design can eliminate unnecessary redundant contents in ICN, improve the cache hit rat and reduce the network traffic. A large scale and real traces-driven simulation with an underlying real Internet topology in China was designed and conducted, and the results show that the caching performance of the CRCache algorithm exceeds current schemes in the respects of hit rate, traffic reduction and server load.