A PERFORMANCE IMPROVEMENT SCHEME OF CONTENT CENTRIC NETWORKING OVER MULTI-SOURCE CONTENT DISTRIBUTION

Abstract

Nowadays, Content Centric Networking (CCN) becomes one of the important technologies for enabling future network. In CCN, the contents are cached along the reverse path from the producer to the consumer, and they may be reused for many times without fetched from the original producer. In such kind of operation, the CCN improves network performance by reducing redundant transmissions of popular contents. However, the volume of the content store (CS) located in the gateway/router is constrained, and much smaller than the size of existing Internet contents which would go through the gateway/router, when rich media applications are considered. In order to solve this issue, this paper proposes a novel Multi-Source Content Centric Networking (MS-CCN) scheme by leveraging the concept of Multi-Source Mobile Streaming (MS2). In the MS-CCN model, the caching of each content is not limited in the single server anymore as in conventional CCN model, instead, each content is fragmented and distributed to multiple servers over a large scale network. After experiencing disjoint multi-paths, various content fragments are concatenated at client side. The OPNET Modeler simulation results show that the MS-CCN scheme significantly outperforms the original CCN scheme in terms of network utilization and user's Quality of Experiment (QoE).