A Study On The Evolution And Method Of TD System Planning Simulation

The network planning simulation of mobile communication is an important basis for operators to evaluate network planning schemes before network construction.Initially,it predicts the network coverage,allocates resources and evaluates network capacity and performance based on the principles of geographic information system(GIS).Additionally,the signal transmission model and planning engineering parameters optimize the engineering parameters based on the simulation results.Finally,it realizes the harmony and unity among “coverage”,“capacity” and “interference” of the network.At the same time,planning simulation plays a macro guiding role in network optimization and blind area coverage after construction.Firstly,the thesis takes TD-SCDMA planning simulation as an example,and explains the basic requirement and process of planning simulation,and TD-SCDMA planning simulation methods.Secondly,it briefly explains the TD-HSDPA planning simulation methods,and mainly explains the characteristics of HSDPA planning simulation,from the perspective of planning simulation,the scheduling mechanism based on channel sharing is the main characteristic of TD-HSDPA planning simulation,which is consistent with the technology development and evolution.Thirdly,it emphatically analyzes the TD-LTE planning simulation process and method,and puts forward feasible realization methods,such as user ranking method and simulation convergence mechanism according to the Monte-Carlo simulation scheduling mechanism,which are currently being realized in CMCC's planning simulation tools.Lastly,it compares the results between planning simulation and actual test of existing networks,and discusses about and analyzes theplanning simulation accuracy.In this thesis,the user priority sorting algorithm of planning simulation,convergence mechanism method and improvement of the accuracy of planning simulation are discussed,which has certain engineering guiding significance.