Research On Mobile Communication Coverage Of High-speed Railway And Its Engineering Application

The major operators are increasingly demanding mobile communication coverage along the high-speed rail,and the high-speed railway coverage is due to the particularity of its scenarios(high-speed mobile users,frequent cell switching)and complexity(including cities,towns,villages,bridges,tunnels).Site planning,antenna selection,power distribution,and network architecture for the construction of the coverage along the line have different requirements from the large network.It is of great engineering value and social value to study the high-speed railway mobile communication coverage planning and engineering application related issues.This thesis firstly describes the research background and significance of mobile communication coverage along high-speed railways,and research the current status of related research at home and abroad.Then take the speciality of the high-speed railway coverage scene as the entry point,and introduce the effects of factors such as fast and slow fading,switching reselection,Doppler frequency shift,and cabin wear and tear on the coverage effect,and cell consolidation,4T4 R technology,leakage cable,DC far Engineering means for the coverage of high-speed rail.Furthermore,starting from the theoretical analysis of coverage factors such as link budget,cell coverage boundary,station spacing,2hanging height and off-track distance,the characteristics and planning considerations of various coverage scenarios such as dense urban areas,tunnels,bridges,parallel lines and trenches are expounded.Finally,combined with the engineering example of Hubei Mobile Company,the theory is implemented in all aspects of the specific project construction plan,and the main equipment selection,antenna selection and application,and the configuration principle of supporting equipment for the mobile communication coverage project along the high-speed railway are comprehensively analyzed.Analyze and propose solutions to various problems encountered in actual projects,so that similar projects of operators can be used for reference.