Programming The Digital Trunk Mobile System For Chongqing City

This paper in the background of China Tietong Chongqing branch's digital trunking mobile communication networks GT800 commercial experimentation, talks about the layout design of Chongqing digital trunking mobile communication networks.From the development course of China digital trunking and the state of the art , the paper presentation digital trunking's each function and application. Via home and overseas digital trunking using instance, analyses the necessity of developing digital trunking mobile communication system common networks construction in China, as well as the necessity and feasibility of developing common networks digital trunking construction in Chongqing..The paper has been processed the business analysis and market forecast of Chongqing digital trunking mobile communication, via the analysis of Chongqing's actuality (including geography position, environment, population, economy, industry etc.), for digital trunking business and market orientation, and analyses market instance, besides adopts colligation forecast method, analogy method and so on, forecasts the market, it provides basis for the layout design of digital trunking networks construction scale and networks capacity .On the basis of market forecast results, the paper marks out Chongqing digital trunking mobile communication networks .In kernel net part, the construction project, structure mode ,network capacity has been demonstrated and contrast choose, provides the kernel net's structure networks construction precept and the networks's evolvement scheme .In wireless system project part, firstly, arguments the wireless networks construction principle, brings forward collectivity construction principle, telephone traffic distribution principle, base station setup principle, base station controller setup principle,antennae selection principle. And adopting Okumura-Hata model to wireless links circuit calculation, and to forecast wireless overlay strong field. Lastly, to marks out the capacity and frequency of the network, provides the wireless base station construction and the corresponding precept, in base station power supply system and transmission system construction aspect, provides construction principle and interrelated request.In the paper's layout, it has been used in Chongqing Tietong branch's digital trunking GT800 system commercial experimentation network construction. Passed the...