The Study Of Green Relay Station Assisted Offloading Scheme For Hybrid Energy Heterogeneous Wireless Network

The explosive increase of wireless traffic volume and smart mobile terminal result in a great deal of energy consumption in telecommunications industry. The number of base station are increasing year by year so that mobile users can feel ultimate service experience from accessing networks efficiently. There is no doubt that the information and communication industry bring convenient life to people, but we can't overlook the problem of energy consumption. The base station is primary energy consumption unit in whole system. Therefore, the information and communication industry have to solve problem is how to reduce energy consumption in energy saving and emission reduction projects. With the development of green communication research, some emerging technology is applied to base station. In the recent years, it is absorbed in operators'wide attention that the base station supplied with renewable energy is introduced for cellular networks. However, the renewable energy has the character of instability and uncertainty, which can't keep working and dissipate amount of renewable energy. 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). Meantime, we put forward the relevant scheme of user access and traffic flow. 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 green relay station assisted cell zooming scheme. Simulation results show that the proposed scheme can enormously improve the utilization of renewable energy. The paper is aimed at the diversity of different service,and propose the offloading scheme based on user preference. The different type traffic is assigned to these base stations which can provide optimal service. On the one hand, the mobile users will enjoy high performance service in heterogeneous networks. On the other hand, the green energy can be utilized efficiently. The proposed scheme provides green communication with new idea and method.