Research And Development Of CDMA-based Digital Trunking System

With 3G is approaching and mobile communications service is developing rapidly, the demand to the digital trunking service becomes more and more urgent. How to provide CDMA based digital trunking service to customs, meet the requirements of production and personal lives, improve the competitiveness of enterprises and enhance the attractiveness of the user, is a major challenge to an operator.In recent years, Henan Oilfield digital trunking network construction has improved steadily and demand increased also, the traditional communications structure and the existing means of communication has been unable to meet production needs for promoting the development of digital and guarantee oilfield the normal operation of the production, there is an urgent need to develop a workable Henan Oilfield digital trunking communication system.In the the thesis,through the Analysis of existing telecommunications network status, the number of the users, Traffic demand, we establish a CDMA-based digital trunking network structure control mathematical model,PDS / PHR control mathematical model, short message control mathematical model and core network control circuit domain mathematical model. Built on the mathematical models and trends on the basis of digital trunking system should satisfy the user capacity and the corresponding services to be provided Design and Implementation. Through the network structure analysis of trunking system, the speed of data transmission, the system capacity, the system's Traffic, etc. is calculated. The program is high scalability, high security, high reliability performance thanks to management and backup. Taking into account the capacity of Oilfield network is a relatively small and relatively lax internal resources we optimize system engineering technology, design a set with the actual situation of the oil solution.The final paper summarizes the Henan Oilfield digital trunking system characteristics and advantages, the prospect of digital trunking technology development prospects.At the end of thesis, we summarize the characteristics and advantages of Henan Oilfield digital trunking system, and look forward to the prospect of digital trunking technology.