Optimization Design For The TD-LTE Network In A Certain Core Area

With the widespread application of 4G network technology,the improvement of network speed and perception in urban core areas is an urgent problem to be solved.In this context,it is necessary to continuously strengthen the research on TD-LTE network planning and design,so as to continuously improve the rate,average SINR and reduce overlapping coverage in the core area of the city.In order to solve the above problems,this thesis studies to improve the above performance indicators through the TD-LTE wireless network optimization solution.Firstly,this thesis discusses the key technologies such as OFDM,MIMO and link adaptation from the basic principles of TD-LTE,and compares them with the network planning and optimization methods of 3G system to provide a theoretical basis for TD-LTE wireless network planning.Then,according to the system characteristics of TD-LTE,this thesis proposes a detailed TD-LTE wireless network planning process,providing the corresponding demand analysis method,analyzing the characteristics of coverage,capacity,interference and the main influencing factors in detail.It is proposed that in the scenario where the LTE network is in a mature commercial period,the customer's perception of the use of voice and data will be improved through the optimization of new sites,power adjustments,and antenna feed adjustments.Finally,on the basis of the above work,according to the current situation and optimization goals of network coverage in the core area of Nanjing,99 problem points to be solved were circled through the DT pull-net test in the planned area.On the basis of theoretical research,it proposes to solve specific problems by adding new sites,neighborhood adjustment,and power adjustment.Through repetitive testing,analysis and adjustment optimization,76 practical problems are solved in the closed-loop finally,and the initial goal of the planning is achieved,which proves that the scheme is feasible.