Investigations On The Planning And Construction Strategy Of 3G-oriented Metro Optical Transport Network

The issue of 3G licenses, as well as the restructuring of telecommunications operators has triggered a hot wave of every major carrier's 3G network construction once again. As carrier network, optical transport network must be built prior to the 3G service network. Therefore, how to suit of 3G services becomes the focus of the 3G telecom operators when they construct the optical transport network.3G network and the inherent characteristics of the services determine the specification of carrier optical transport network.As a solution for future mobile communication systems,3G network must carry not only GSM Voice but also more mobile data services. As a general data service providing program, the Group's VPN services, smart residential with high speed internet access services, and lease line services, ect, should be given the forward-looking considerations in the 3G optical transport network construction.From the status quo of Beijing Unicom metro transport network, as well as the practical needs of the 3G metro optical transport network construction, the paper focuses on a variety of metro transport technologies, and discusses the application of technologies at all levels in metro transport network. Then, the author illustrates the building strategy and principles of 3G metro optical transport network. On the basis of the summary and analysis of the project practice, author introduces the detailed information on the implementation plan of Beijing Unicom 3G metro optical transport network, and also counts the construction scale of the Beijing Unicom 3G metro optical transport network after its implementation.