ABSTRACT
Energy-efficient communication has become a challenging problem in the last few years. Current estimates [1] show that the Information and Communication Technology sector (ICT) consumes between 2% and 10% of the worldwide energy consumption, and this trend is expected to grow even more in the future due to the proliferation of both networked and networking devices. Internet Service Providers (ISP), are becoming sensitive to reducing the power consumption of their infrastructure, due to increasing energy costs and new business opportunities that can be realized by “going green”. At the same time, Content Providers (CP) are faced with a constant increase in the number of users coupled with the need to reducing the energy consumption of both server farms and cooling systems. Therefore, both ISPs and CPs could potentially realize great benefits if energy-efficient techniques would be fully developed for network devices [2, 3] and servers [4, 5].
