基于功率控制的异构蜂窝网络基站节能机制

Energy-Saving for Base Station Based on Power Control in Heterogeneous Cellular Network

针对移动网络中潮汐效应引起的能量浪费现象,提出一种基于功率控制技术的异构蜂窝网络基站节能机制。建立一个非合作博弈模型,以基站为博弈参与者,以能量效率作为收益函数,利用粒子群算法求次优解。该次优解逼近博弈模型的纳什均衡解,从而近似得到最优的功率控制结果。仿真结果表明,该机制能提升整个网络的能量效率,降低网络能耗,实现绿色通信。

To overcome the problem of energy waste caused by tide effect in mobile network,we propose a base station energy-saving mechanism based on power control in heterogeneous cellular network. The proposed scheme formulates a non-cooperative game,where BSs（Base Stations） act as players and energy efficiency act as utility function. Then the mechanism obtains a suboptimal solution by applying PSO（Particle Swarm Optimization） algorithm. The suboptimal solution is approximate to Nash equilibrium of the game model,and then approximate optimal power control results are obtained. Simulation results show the proposed mechanism enhances the energy efficiency of both MBSs（Macro Base Stations） and FBSs（Femto Base Stations）.