Based On CDMA 1X Networks Design And Implementation Of Intelligent Transportation System

Intelligent transportation system (ITS) is a high-tech management system, which is based on the integrated use of global positioning technology, wireless communication technology, geographic information technology, networking technology, computer technology, automatic control technology and software technology. It helps bus companies achieve informationization, automatization and intelligentization in operating and scheduling.As CDMA system has advantages such as privacy, anti-jamming, soft-handoff and fast-transfer, real-time and accurate data could be provided for intelligent transportation system by using CDMA 1X wireless network to transmit data. Besides, accurate location information could be provided for vehicles by using GPSONE which is the specific technology of CDMA.Intelligent transportation system in this article, using GPSONE to obtain location information, CDMA IX networks to transfer data, VPDN access methods to obtain data, statistical analysis of bus operation information to develop appropriate systems scheduling policies, providing passengers with real-time information on bus fare, bus operating companies to grasp the overall operation of vehicles; not only improve the operational efficiency of enterprises, but also easy for people going out.This paper describes the current status of intelligent transportation systems and intelligent transportation system project to the city as a case study, detailing the design principles of this project, the system's hierarchical structure and the layers of the implementation of the method and associated algorithms; the same time this project assessed the results of trial operation, and that the project areas for improvement later.The main contents of this paper:1. To confirm the demands of the bus group for intelligent transportation systems, and propose solutions and functions.2. Use of telecommunications in the CDMA 1X network in order to provide vehicle's location information based on GPSONE, AFLT and the BSA database technology for intelligent transportation system.3. To divide hierarchy of intelligent transportation system, and determine the functions of each layer module.4. To design and implement the hierarchy module of the intelligent transportation system.5. The system was tested to determine the feasibility of system implementation and problems.From the date of trial operation, the intelligent transportation system operated normally. It verified the correctness of the theory.