Cooperative and Distributive Caching System for Video Streaming Services over the Information Centric Networking This work presents a cooperative and distributive caching system over the informationcentric networking (ICN) tree. The goal of the proposed caching system is to provide seamless video streaming services with high network utilization over the ICN tree. The proposed system employs a metafile made by a scalable caching scheme for simple but effective Content Store (CS) management, and the caching information among ICN nodes is delivered by modified ICN interestdata packet headers with no additional control overhead. Based on the delivered caching information and the metafile, each ICN node determines its own caching chunks in a distributive way to minimize the required peak bandwidth for seamless streaming. The proposed caching system is fully implemented using the NDNSim for large scale simulation. Moreover, a smallscale real cellular wireless network testbed is realized by using CCNx and Raspberry PIs.

Edgeoriented Collaborative Caching in InformationCentric Networking Innetwork caching is a key feature of informationcentric networking (ICN), in which routers take charge of caching passing contents. Such cache design enables efficient content distribution, but the benefit comes at a nontrivial cost, given adding workload to routers. With the emergence of edge computing, more edge devices with large storages are available, which is a good opportunity for new caching design. To this end, we propose a novel Edgeoriented Collaborative Caching (ECC) in ICN. In ECC, edge devices (such as edge server, micro datacenter, etc.) cache contents while routers only maintain cache indexes which are used to redirect subsequent requests towards the cached content. This enables ECC to work in a lightweight and collaborative fashion. We propose an optimization method to properly create cache indexes, considering both content popularity and cache benefit. Moreover, we also present a failure recovery mechanism to ensure system robustness. Simulation results show when deploying the same total cache capacity, ECC outperforms typical ICN caching schemes in terms of response latency, server load and bandwidth consumption of links.