Planning For The Integrated Communication Networks Of Urban Rail Transit

The advantage which urban rail transit could divert mass passenger flow and change the city layout structure has been tested in practice. It brings about that the large and medium-sized cities are wild about large-scale construction of urban rail transit. The rapid development of urban rail transit make it access the era of network operation. The integrated communication networks is the key to solve the problems of the coordination between the lines, information resource sharing and connectivity. It can realize the information exchange between the different routes, meanwhile, it is also the basis of implementation the centralized management of urban rail transit information. So the planning for the integrated communication networks is very necessary.First of all, according to the integrated communication networks status and role in urban rail transit the paper will analyze the requirement of its vocational work requirements. The requirements mainly consist of two sections which are the control center, the route control center and the communication networks itself. Secondly, according to the requirement analysis and the comparison of communication technologies, the paper will accomplish the preliminary planning of the overall architecture of the integrated communication networks which can determine the topological structure, the transmission mechanism and the service access mode of the integrated communication networks. Thirdly, the planning for the service system of the integrated communication networks in detail will be completed. And this paper has carried on the comprehensive planning study about the public telephone system, dispatching telephone system, wireless communication system and closed-circuit television from their system function and system composition. Finally, according to the definition of the communication networks reliability, the index of the reliability and analyze the reliability of the integrated communication networks will be calculated in the paper.In summary, the paper will achieve all sections of planning for integrated communication networks of urban rail transit, and analyzes the reliability of the integrated communication networks.