Characteristic Analysis of Socially-Aware Information-Centric Networking

Abstract

In recent years, with the rapid growth of Social Networking Service (SNS), e.g., Twitter and Facebook, the traffic of user-generated contents has dramatically increased. One of promising network architectures to realize efficient content delivery in SNS is cache network, e.g., Content Delivery Network (CDN) and Information-Centric Networking (ICN). In order for the cache network to effectively operate, the key is to appropriately design the caching strategy and the cache-replacement policy at caching nodes, e.g., cache server in CDNs and router in ICNs. However, to design a cache network for distributing SNS contents, we have to carefully consider tremendous factors – features of social network representing the social relationship among SNS users and those of cache network. Therefore, in this paper, we assume that ICN is introduced as a content distribution infrastructure for SNS, and extensively analyze the characteristics of the socially-aware ICN. In particular, we focus on the influential user called influencer, which is one of typical features of social networks, and investigate the effect of the selection of influential users on the content caching in ICNs. Consequently, we reveal that the cache hit ratio differs according to centrality measures that determine influential users.