Optimization Of Tianjin Tietong Transmission Network

The transmission network of Tianjin Tietong is mainly constructed by large-scale fiber SDH (Synchronous Digital Hierarchy) transmission network. The national backbone network and additional core network of metropolitan area network mainly uses DWDM (Dense Wavelength Division Multiplexing) equipment for the transmission of data services. The entire network uses PDH and microwave communications technology as supplement.Firstly, the article described and analyzed the transmission network of Tianjin Tietong as well as introduced metropolitan area network of Huawei and ZTE. For historical reasons, the Tietong network and railway network not only has cross-section, but also continue to enhance the interoperability and interconnection of network of China Mobile.There is a problem that the network structure is not entirely reasonable in Tianjin Tietong local transmission network. The constructor of this transmission network paid more attention to business carrying capacity of the transmission network, while the investment in the network structure is still inadequate. During the network construction, there are limiting factors such as limited project investment, old and new network-compatible fusion, duration constraints, technical constraints and others, which resulted in the irrational structure of network and limited efficient use of transmission resources, resulted in the network scalability and reliability, circuit scheduling flexibility, and network capacity bottlenecks.After analyzing on the network, the article performed full range of network optimization and transformation in aspects of network security, network scheduling, network expansion, and interconnection of mobile networks, etc., based on existing CTT network conditions, and historical reasons and was focus on existing shortage of Tietong network.