Design And Implementation Of Ningbo Metro Vehicle WiFi System

In recent years,with the rapid popularization of information technologies such as 4G wireless network and Internet,intelligent terminals such as high-performance smart phones and tablets are also widely used.Meanwhile,with the rapid development of rail transit in China,rail transit will play an increasingly important role in daily life as an indispensable mode of transportation.According to relevant statistics,among the passengers who choose urban rail transit as their travel tool,the proportion of using intelligent terminals is as high as 70%.Thus,people rely more and more on information network,which requires urban rail transit to provide stable,reliable and safe network services for passengers.Since passengers spend most of the time on the train while traveling through rail transit,the research on promoting vehicle WiFi technology has become the focus of improving passengers' experience.Vehicle WiFi system can provide stable,reliable and safe WiFi network services for passengers,reduce the cost for passengers in charges of mobile data traffic and improve passengers' experience and satisfaction in traveling,which provides ideas for solving the problem of mobile network access in the informatization construction of urban rail transit.This paper studies the Vehicular Wi-Fi system of urban rail transit and its relevant technologies and design principles used in this system.By analyzing the technical requirements of Ningbo Rail Transit Vehicle WIFI system,this paper designs a set of Vehicular Wi-Fi system,realizes the function of the system,and tests it.The main work contents of this paper are as follows:Firstly,the present situation and demand of Ningbo rail transit Vehicular Wi-Fi system are analyzed,and the overall demand,user demand and management demand of Vehicular Wi-Fi system are sorted out.According to the requirement,the achievements are analyzed and the scheme of the Vehicular Wi-Fi system is designed,which includes networking,Portal authentication and so on.Secondly,according to the current situation of Ningbo rail transit Vehicular Wi-Fi system,the hardware platform of Vehicular Wi-Fi system is built and the relevant parameters are tested,which verifies the feasibility of the design scheme...