The concept and realization of context-based content delivery of NGSON

An explosively increasing number of multimedia contents including video, music, and pictures will be the main driver for data explosion in the next decade. However, the current IP network does not have enough capabilities to support smart content delivery that enables a network to enhance end-to-end quality and fair usage of network resources for every user while optimizing network traffic for ISPs, and to present a collaborative way for a content provider. In order to realize smart content delivery, NGSON, which has recently finished standards on its functional architecture, includes important implications like context-based routing and content delivery. In this article, we focus on smart content delivery using context information called context-based content delivery (CBCD). We present experiences with implementing and evaluating the concept as a new feature of the NGSON standard. Experiment results show that a network provider could achieve over 30 percent backbone traffic reduction by realizing the CBCD concept.