Research On Public Mobile Communication Construction Plan Of Urban Subway

The rapid development of public transportation in China has made the subway an important part of public transportation in large and medium-sized cities.People’s demands for mobile communications are also getting higher and higher,which requires high-quality mobile communication networks in the subway station platforms and tunnels.To solve the increasing demand of passengers for mobile communication networks;to meet the network indicators of different operators under different formats,to avoid the need to repeat the construction of distributed systems by operators,and to ensure that the standards do not interfere with each other.This is the present subway system.In the construction of public communications networks,issues that need to be considered are important.This paper closely integrates with the public mobile communications system project under construction at Changzhou Metro,making use of multi-system access platforms to fully utilize resources and save investment.The track tunnels,station halls,and platform platforms are covered by an uplink and downlink splitter scheme.The system hardware is designed as a MIMO dual path.Based on the existing metro public network coverage in Nanjing,actual interference analysis was conducted and a reasonable solution was proposed.At the same time,it is planned to comprehensively consider the system and development requirements among operators’ systems.Combining coverage scenarios,switching zones,tunnel breakpoints and traffic flows for precise planning.Power splitters,couplers,etc.are used to rationally distribute the output power of the main equipment to ensure signal coverage.The research plan of this paper has the characteristics of unified planning,balanced resources,promotion of integration,and cost reduction while meeting the mid-to long-term coverage effect.It has certain economic significance and far-reaching social significance.As China will enter the stage of large-scale construction of public mobile communications systems in metro cities,the research results of this paper can be used for learning and learning from the metro cities of the brothers.