The Technology Research And Implementation Of Tianjin Unicom Ngn Carrying Network

With the rapid development of the communications industry and fierce market competition, each of the communication operators to provide users with a more diversified business, and people demand for communications is not only confined to the traditional voice business, needs more powerful information exchange platform, to the convergence of voice, video, multimedia services, with moving characteristics, and easy to use. Under such circumstances, the next generation network (NGN) technology emerge as the times require. Because of NGN services, the advantage of control and bearer separation, which Provides voice, data, multimedia integrated services, network deployment flexibility, business to provide fast and so as become the development trend of telecommunication networks. At present, almost every domestic communicated operator has the commercial network built with NGN.The article from the concept of NGN to introduce the definition of NGN, background, development of NGN and the professional features of NGN, then introduces NGN and its key techniques and discusses the requests of its Carrying Network, through where comes the researches of the key techniques of the Carrying Network and points out that it is necessary to separate the NGN business and the Internet business as being needed. It also analyses the influence to several key techniques of the Carrying Network and simply compares the Physical Separation to the Logical Separation from the points of their technologies and costs.This article is focus on establishing a Carrying Network of NGN which provides various kinds of telecommunication and the future business. The NGN of TJCNC is a network which runs some important telecommunicating business such as NGN,3G or IPTV, and in this article, the point of establishing a NGN has been profoundly studied. Now, the IP Digital Network is not suitable to carry business of NGN due to itsSecurity and its capability for developing and actualizing the business. Therefore, it is feasible to build a new and professional IP network to be the Carrying Network of NGN in respect of both economy and technology.In order to explain more about realization the Carrying Network of NGN, the Author uses router Bell7750SR of Shanghai combined with recent requests in Tianjin to plan the router of NGN and to protect strong and to explain specifically the realization of QOS. The author also presents the planning of both the existing NGN and the available IP network. In principle the two platforms will be connected to work together, and the central core connects them. After the business of NGN operation, it will be sent to the different business platform for different clients or business as well as different quality services. At present, the carrying Network of NGN has been operated in practice, and it will be improved and developed on new condition of operation and business in future time.