Small Cell Deployment Research Based On Energy Efficiency Optimization In Hetergeneous Networks

Small Cell is an effective means to improve system capacity,energy efficiency and network performance in the next generation wireless communication technology(5G).Deployed mostly in areas not covered by Macro Cell,it can increase network capacity and improve the quality of wireless signals received by peripheral users.Therefore,how to improve the energy efficiency of the heterogeneous network combined by Small Cell and Macro Cell and reduce the power consumption and cost of the system has become the main research direction of wireless communication.In this paper,energy efficiency in heterogeneous network is fully considered to study the deployment of Small Cell under the condition of optimal energy efficiency.The specific research contents are as follows:Firstly,this paper analyzes and studies the latest development of 5G requirements and key technologies at home and abroad.Based on the existing research results and the development direction of wireless communication technology,the necessity of selecting the energy efficiency model and the base station power consumption model under the optimal deployment scheme is analyzed.Secondly,in view of the deployment of Small Cell in heterogeneous Massive MIMO system,considering the influence of base station location,number of antennas and density of Small Cell on the energy efficiency of the system in different scenarios,the optimal deployment scheme of Small Cell was proposed.Under the single-cell system model,when the user's target transmission rate constraint condition is satisfied,the scheme obtains the base station deployment location when the system energy efficiency is optimal by minimizing the system power consumption.In the multi-cell system model,the deployment of Small Cell for optimal energy efficiency and throughput is obtained by analyzing the impact of different optimization parameters on the system.Through analysis and simulation,this paper considers the optimal scheme of dense deployment of Small Cell in heterogeneous network obtained by system energy efficiency,which has important reference value for the deployment of Small Cell in the 5G environment.