The Formation Of IP-based Transmission Network Of Practice In Medium And Large Urban Environments

Before 3G and full business operations, the transmission network of all operators already has a considerable scale after years of construction, to meet its base stations, groups, and other business needs. But the arrival of the 3G network and the whole context of the business faced a challenge.There are signs the surface, the original transmission networks are increasingly unable to meet the requirements of the new situation, the need for a high-speed IP-based transmission network wide coverage to suit business.In Nanjing, a city of re-building of such a large IP-based transmission network, is a challenging task. This paper describes the technology of choice for building the network, the overall planning ideas, build process, summarizes the lessons learned to build whole network, the network set up to discuss the next step after the evolution direction.Paper first describes the background paper topics, discussed the necessity of IP-based transmission network, transmission network based on IP technology needed to build the selection and related technologies are described in detail. Articles focus on IP-based transmission network describes the structures of general ideas, specific planning assumptions of Nanjing; transmission of IP-based network set up in Nanjing for a detailed description of the process and give specific examples, including PON network, OTN network, PTN networks. Then briefly describes the evolution of IP-based mobile carrier network in Nanjing after the status quo. Concludes with a discussion of lessons learned in the process of building and IP-based transmission network trends.