Analysis of the Energy Efficiency in IP over WDM Networks with Load-Adaptive Operat

The energy efficiency of telecommunication networks has gained increasing interest during the recent past. Since the traffic volume in networks is observed to vary significantly over time and current telecommunication networks provide approximately constant capacity, energy-aware load-adaptive operation of telecommunication networks with respect to that real traffic load characteristics is a promising approach for improved network energy efficiency and sustainability. By means of real traffic measurement data the potential of increasing the related energy efficiency is studied. The analysis shows an energy saving potential that can be leveraged by load-adaptive operation of about 6-7 % compared to the reference network with conventional operation.