Traffic Demand and Energy Efficiency in Heterogeneous Cellular Mobile Radio Networks

Optimization of the energy efficiency is considered not only to positively contribute to the ecological assessment, but gains in importance from operator´s point of view as well, since energy costs for running a mobile radio network have an increasing share of the operational expenditure. From this perspective, the utilization of small, low power base stations is regarded as a promising strategy to enhance a network´s throughput and to increase the energy efficiency. In this paper we investigate on the efficiency of homogeneous and heterogeneous networks consisting of a varying number of micro sites with regard to traffic load conditions.