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Local Switching Network Reconstruction Based on the Research and NGN

Author: LuYao
Tutor: LiaoQing
School: Beijing University of Posts and Telecommunications
Course: Electronics and Communications Engineering
Keywords: Softswitch Network evolution AG transformation NGN PSTN
CLC: TN915.02
Type: Master's thesis
Year: 2010
Downloads: 60
Quote: 1
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Abstract

With the development of Internet technology, particularly those based on the Internet Voip technology continues practice in today's telecommunications market in terms of the range of business services and business modalities are undergoing rapid change, these changes has a profound impact on the underlying communication network architecture and characteristics. Speed ??up the pace of transformation in the PSTN network, combined with the prevalence of light into the copper access network, the rapid rise of broadband services, as well as the gradual growth of the NGN network size and maturity, marked the telecommunications network has entered a huge change and transition period. The next generation network based on packet switching technology, stratified, open architecture to accommodate various forms of information to facilitate the achievement of a variety of media such as voice, video, image and data business open network system integration. In this sense, the next generation network longitudinal covers the service (application) layer of the network, the control layer, the transport layer, the access layer, even the terminal level of the next generation technology, also laterally comprises a fixed network, mobile network, system of the next generation of the Internet and other types of network technologies. Despite the range of next-generation technologies, including next generation network, but its main technical characteristics should be attributed to the open protocol or API interface between the layers of the network, thus breaking the traditional telecommunication network closed pattern to support a variety of heterogeneous networks. fusion. More precisely, the next generation of network system through the separation of business and call control, call control and bearer control separation to achieve a relatively independent hierarchy, the upper businesses achieve the underlying heterogeneous access network independent, thus truly independent business open, independent service providers, and even independent business operators provide a vast living space. Market competition continues to intensify, and how to develop a new smart business to meet market demand, reduce investment and operation and maintenance costs and improve the rate of return on investment and, at the same time be able to make the network more flexibility, better quality of service, providing customers with better The service has become the primary consideration of the carrier. However, in NGN development of the early stages, can really attract users to the \suppliers, since it has a large number of fixed-line switching equipment, completely abandoned the original PSTN fully transition to NGN is bound to bring enormous pressure on investment and revenue, for the protection of the pre-investment in the fixed-line, at the same time meet the traditional program-controlled switchboards the narrowband users within the network for network renovation or upgrade of new business requirements for the softswitch network elements will inevitably become a priority in the selection. In this background and situation, Guangxi Telecom launched the NGN network intelligent project to raise the overall network intelligence and business capacity, and lay a good foundation for future network evolution and integration of 3G, IMS. My company as a traditional PSTN network operators and how the evolution of this network transformation to achieve rapid transformation is a key consideration. The papers by the living conditions of the fixed-line and fixed-line switch combined with softswitch networking, the development process and direction in the development of the local network, saving energy, make an inventory of the assets, network transformation actual income starting to integrate into current requirements of the building of the light into the copper, the transformation of the entire network of local fixed-line network optimization solutions. The article first describes the research background, research work and achieved initial results. Then details the softswitch technology background, structural topology, as well as the standardization process, and depth of content, significance and future development of the fixed-line network evolution to NGN. PSTN switch from local existing network problems and starting to explore the idea of ??evolution to NGN network as well as the implementation of specific transformation steps and precautions based on the feasibility of the transformation of NGN network. Summarizes the traditional circuit-switched network to NGN network transformation and future prospects, and engineering issues and made a part of the experience is also incorporated summarize.

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