Green relay station assisted cell zooming scheme for cellular networks

The explosive increase of wireless traffic volume and mobile terminal result in a great deal of greenhouse gas emission and energy consumption in telecommunications industry. In the recent years, it is absorbed in operators' wide attention that the base station supplied with renewable energy is introduced for cellular networks. In order to make the best of renewable energy in green base station, we formulate the problem of maximum usage ratio of renewable energy in the way of minimum cost by introducing green relay stations (GRS). In the paper, we propose a new scheme which will contribute to reduce the total energy consumption and improve the utilization of renewable energy. The proposed strategy is GRS assistant cell zooming scheme applied in LTE network using green and traditional macro base station. Simulation results and numerical analysis show that the proposed scheme can enormously improve the utilization of renewable energy and reduce the total energy consumption of traditional base station.