Dynamic transmission control to save power considering communication quality

Abstract

The rapid increase of power consumption due to Internet traffic growth has made the reduction of power used by network equipment a vital issue. We earlier proposed a dynamic transmission capacity control scheme to reduce power consumption on the basis of changes in traffic volume. However, that scheme does not have a function to control the power-saving performance according to the required transmission quality. We propose a new scheme here that does consider the required connection quality. In this scheme, the required transmission capacity is determined in a way that satisfies a predetermined tolerance delay at a switch. Using simulation studies, including an evaluation with real traffic, we show that the proposed scheme enables efficient power saving without impairing the required transmission quality.