Caching Strategy for Scalable Video Coding in Information-Centric Networking

Information-Centric Networking (ICN) is widely accepted as the network architecture for the next generation Internet. Caching strategy is one of the most important issues of ICN and has received much attention in recent years. In this paper we focus on caching strategy for Scalable Video Coding (SVC) in ICN. We first develop the mathematical models of user behavior, video popularity, user experience and caching efficiency. Then we propose a new caching strategy named PoProb, which determines the caching probability of a video according to its popularity. Simulation of PoProb is conducted using AMuSt simulator based on the ndnSIM simulation platform. Simulation results show that compared with existing caching strategies, PoProb can improve user experience and cache efficiency to a certain extent.