Performance Evaluation of Popularity-Aware Dynamic Clustering Scheme for Distributed Caching in ICN

Information-Centric Networking (ICN) provides low-latency content delivery with in-network caching, while delivery latency depends on cache distance from consumers. To reduce delivery latency, a scheme to cluster domains and retain the main popular content in each cluster with a cache distribution range has been proposed, which enables consumers to retrieve content from neighboring clusters/caches. However, when the distribution of content popularity changes, all caches of the content may not be distributed adequately in a cluster, so consumers cannot retrieve them from nearby caches. We therefore have proposed a concept of dynamic clustering scheme to adjust the cache distribution range according to the change in content popularity. In this paper, we evaluate the effectiveness of the proposed scheme in more detail through simulation.