PERFORMANCE ANALYSIS AND EVALUATION OF ENERGY EFFICIENCY RESOURCES IN CELLULAR MOBILE NETWORKS

Abstract

The aim of this paper is to provide an in-depth analysis of network power characteristics, in order to be able to address the basic power estimation and behavior under extreme load conditions, these being the main resources in a cellular network. Currently, one of the biggest challenge is continuous growth of energy consumption by cellular infrastructure equipment, especially base station which take up to 80% in total of input energy into cellular networks. A set of good metric were proposed that significantly reflect the energy efficiency and allow for performance to be evaluated. These metrics include Energy Consumption Index (ECI) that measures efficiency of power utilization for a base station, its lower value indicate better energy efficiency and Performance Indicator (PI) measures power consumption per coverage area, its higher values indicates better energy efficiency. The effect of traffic, interference and path loss exponent on the energy efficiency of cellular network were investigated and the analysis results obtained by Monte-Carlo (MC) simulations were discussed based on the proposed energy efficient model. When considering heaviness index and minimum traffic rate, the numerical results show that there exist a maximum value for energy efficiency under each parameter configuration. The maximal energy values are 0.52, 0.43.0.24 and 0.22 bits/Hz/Joule corresponding to the intensity ratio of MSs to BSs of 105, 78, 120 and 82, respectively. The proposed energy efficient metrics provide effective means for design objective and evaluating the performance efficiency of components of cellular network.