Energy efficient cooperative cell control of LTE-Advanced cellular networks

Abstract

To reduce energy waste in future cellular networks, the most effective and reliable method is to close idle base stations when not needed, but how to find the proper and optimal method to control the target cell and the adjacent ones are still blank according to recent researches. In this work, we extend our research in cooperative scheme, and figure out a heuristic control method of eNodeBs in GREEN mode. We first define the energy efficient controls of LTE-Advanced cells in cooperative mode and raise a heuristic algorithm to support the on-off optimal control of LTE-Advanced cooperative eNodeBs, especially when and which eNodeB will be changed into sleep mode and which one(s) need to be waken up. Compared with no shut down methods, we have obtained about six times of the total savings by adopting our control method with the cost of less than 6% of the system overall QoS under both theoretical and LTE-Advanced system level simulation platform.