Energy efficient data caching for content dissemination networks

As various multimedia services are being provided on networks, broadband traffic is growing as well. Reducing traffic is important because power consumption in networks has been increasing year by year. Meanwhile, in-network caching for CCN (Content-Centric Networking) is expected to achieve an adaptive content delivery in the network and to reduce traffic by storing content data on each router. Therefore, in-network caching is beneficial in view of energy efficiency. However, in order to improve energy efficiency of the network, it is necessary to cache content appropriately in consideration of both power consumption of content caching and transmission of traffic. In this paper, we propose a design method which derives the most energy efficient cache locations of content and a distributed cache mechanism for CCN to search for energy efficient cache locations. Furthermore, we demonstrate the effectiveness of the proposed method.