Phase II: The whole network covering 6.5438+0.92 million users of 36 NGB operators will be formed to realize the controllability and management of the national backbone transmission network, metropolitan area network and access network. System construction of audio and video, information, entertainment, application and message service. Realize cross-domain interoperability between demonstration operators.
To do a good job in NGB network, we must rely on a large enough industrial chain. Scientific research institutes inside and outside the radio and television system should use independent innovation, core technology and intellectual property rights to incite the development of NGB industry, promote the revitalization of electronic information industry with a level of 100 billion, and promote the emergence of cultural entertainment and modern service industries with a level of 100 billion every year.
NGB and CATV digitalization
In the 1980s, the slogan of "four-level TV stations" was put forward, which made radio and television stations all over the country spring up like mushrooms after rain. Since then, the vigorous development of radio and television in China has also begun. Today, behind the prosperity, problems have begun to stand out, leading to the fragmentation of radio and television networks across the country. Today, with the gradual integration of the three networks, China Radio and Television began to explore the road of integration and integration, and the next generation radio and television network (NGB) came into being. At this year's preparatory meeting for BIRTV2009, Wang Xiaojie, director of the Science and Technology Department of the State Administration of Radio, Film and Television, pointed out that the focus of SARFT's work this year includes high definition, interaction and the construction of the next generation radio and television network. At the same time, she also introduced half jokingly that some experts suggested that there are three major operators in China, namely China Mobile, China Telecom and China Unicom. Then, after NGB is completed, Radio and Television will be the fourth largest operator in China. Although it is a joke, the ambition of radio and television is obvious.
On February 4th, 2008, the Ministry of Science and Technology and the State Administration of Radio, Film and Television * * signed the Agreement on Independent Innovation and Cooperation between the National High-performance Broadband Information Network and China's Next Generation Broadcasting and Television Network (NGB), proposing that the initial investment of 654.38 billion yuan will support the upgrading of NGB, which will transform 200 million cable TV network users within 654.38+00 years. It is understood that the radio and television system will begin to build a 100 megabit broadband network. After completion, the network backbone network rate will reach 1000Gbps, and the access network user rate will reach 60Mbps, which is nearly 100 times higher than the existing per-user rate. Network transformation consolidates NGB foundation. The next generation broadcast TV network is based on the achievements of digital cable TV and mobile multimedia broadcast TV (CMMB), supported by the core technology of independent innovation "high-performance broadband information network", which is suitable for China's national conditions, "three networks of cable and wireless" and the whole network is integrated. Its main features are "whole journey and whole network", "interconnection" and "controllability". Because one of the network foundations of NGB is the existing cable TV network, with the development of NGB, the digitalization and two-way transformation of cable TV have been promoted. However, the two-way transformation of China is a gradual process. With the continuous expansion of the market scale, many problems have gradually surfaced. As far as chip manufacturers are concerned, the lack of R&D capability of domestic manufacturers leads to excessive dependence on international chip manufacturers. However, the downturn in the global economic situation has led to the bleak operation or bankruptcy of many international manufacturers, which will inevitably affect the process of two-way transformation. In addition, let's look at the solution. In order to compete for this "cake", major network equipment manufacturers and IT vendors have launched solutions. However, the network transformation schemes launched by these manufacturers for cable TV operators either only focus on metropolitan area network or access network, and some only consider the household plan, which requires the integration of local radio and television departments and lacks the overall solution of the whole network. These are all problems in the current two-way transformation process. In order to adapt to the development needs of the next generation radio and television network and make the cable television network transition to the next generation radio and television network, the Radio and Television Planning Institute was entrusted by the Science and Technology Department of the State Administration of Radio, Film and Television to carry out the test and evaluation of wired access technology (EoC).
Evaluation and standard research, drafted the "Next Generation Radio and Television Network Wired Access Technology (EoC) Requirements White Paper". Wired access technology is one of the key technologies of the next generation radio and television network, that is, based on coaxial cable, it carries Ethernet services and other integrated services through various digital modulation technologies to realize broadband access for users of the next generation radio and television network. Using this technology to transform CATV network into broadband and bidirectional can effectively give full play to the advantages of CATV network, such as wide frequency band, low cost and easy popularization, which is conducive to building CATV network into a multimedia information platform for thousands of households, meeting the needs of all walks of life and residents, and promoting the integration of the three networks. The white paper has guiding significance for cable TV operators to carry out two-way network transformation and access network construction, paving the way for the construction of the next generation broadcast TV network.