Research On TD-LTE Wireless Network Grid Rolling Planning

China Mobile's TD-LTE network has completed the scale deployment after the expansion of the scale experimental network and the construction of various wireless network projects.With the increase of users and the explosive growth of traffic,the focus of TD-LTE network construction has gradually changed from “broadness” to “depth” and “thickness”.Traditional network planning cannot solve existing network problems quickly and efficiently.This thesis proposes a scientific and efficient grid rolling planning,can exhaustively find the network problems,exactly and scientifically implementation of site planning,to support China Mobile to build TD-LTE network,create a boutique network,and ensure 4G lead.This thesis firstly introduces the development and evolution of TD-LTE,and studies the key technologies of physical layer such as OFDM,MIMO,frame structure and physical Resource,channel coding and link adaptation technology in TD-LTE system,which is the TD-LTE network grid Rolling planning provides the necessary theoretical basis.Secondly,the methods of grid rolling planning are expounded,including the tools of grid rolling planning,grid coverage planning,grid capacity planning,and macro-micro networking strategy and frequency band planning principles.Finally,the implementation of a city grid rolling planning project is introduced;including project establishment,organizational structure,implementation plan,and network quality comparison before and after project implementation,and the theoretical feasibility of grid rolling planning is verified.The TD-LTE network grid rolling planning proposed in this thesis can locate the TD-LTE network problem in a proactive and systematic manner,scientifically and accurately implement site planning,and solve network problems efficiently.Through the verification of the implementation of engineering projects in a certain city,the grid rolling planning is applicable to the network planning of complex and densely populated buildings such as dense urban areas,general urban areas,and county towns.It is a scientific network planning method,which is important for TD-LTE network construction.