Two-way Cable Television Network On The Transformation Of Chinese In China - Two-way Transformation,

Of: Institute of State Administration of Radio Broadcasting

, Yang Jie Yang

In a two-way cable network construction and transformation process must make the cable network edge audio and video services, select the appropriate technology throughout the network conditions and characteristics of the construction and transformation of technology solutions to multi-way network to promote the transformation of business development lay carry out two-way business radio and television network infrastructure, making basic cable network has broadband, two-way, multi-functional carrying capacity. Expand the field of radio and television services, to become a family of ordinary TV receiver terminal multimedia information terminals, in promoting the "triple play" process of full national basic cable networks as the important role of information networks.

In the late 90s of last century, the growth of the Internet, driven by two-way cable TV network construction and transformation of a high tide. During this period, the U.S. cable television network, a large-scale reconstruction and construction, from 1996 to 2002, total investment in the cable industry reached 76 billion U.S. dollars, the average household 1,000. However, in our country, because of funding, policy, network size reasons, the construction of two-way cable TV network with the slow progress of reconstruction work, now most of the cable TV network is still one-way network.

With the overall digital television conversion cable to work fast forward, and the state of the "triple play" requirements, as well as the needs of their own development and integration, network construction and transformation of two-way cable television industry to become hot again. Two-way cable television industry for network transformation of the importance and urgency of understanding has been achieved unprecedented unity, it is "how to change and how to change" issue. The following two-way cable TV network on how the construction and transformation of my personal views.

1 fully understand the advantages of cable television networks

In the home broadband Internet access market, there are three main ways, namely, the fixed telephone network based on ADSL mode, LAN-based five-line manner and on cable TV coaxial cable CableModem way. Access methods and transmission distance have a great relationship, and thus access the application form and mode of living and the environment have a great relationship. In the United States, people living in more dispersed, suitable for long distance transmission of CableModem widely used, 60% of U.S. home broadband users CableModem way. As the relatively large density of urban living, the three access technologies in the transmission distance can satisfy application requirements. China Telecom and China Netcom ADSL technology and strong industry with advantages, has become the family's dominant broadband access market. In theory, LAN works best for our high-density living environment, but need to re-laying five LAN mode line, in addition to new housing, the project is very difficult, so based on five lines of LAN technology is greatly restrictions. CableModem in Shenzhen, Shanghai and other regions have good application, but because of restrictions on Internet access and cable television industry managing some of the reasons the network itself, CableModem technology as unsatisfactory. Why do we think deeper level ADSL to become the main force in home broadband Internet access? Among other factors, the high penetration of fixed telephone subscribers, and building tube-wells pores and other network infrastructure and improve the telecommunications industry, the most rapid development of the root causes of broadband users. The LAN-based broadband network the way other companies do not have such basic conditions, the rapid development of the user and it is difficult to conduct business. Cable TV industry after years of development, already has a good network infrastructure and has 138 million users, with the telecommunications industry in this area have the same advantage. From this, we can see that an industry based on years of accumulated for the future development of the implementation is very important.

We know, images, sound and text quite different from the amount of information. Audio video transmission bandwidth is about more than one order of magnitude, than the audio bandwidth has written about an order of magnitude higher. Therefore, regardless of the network form and ownership, "triple play" will promote the development of its way to broadband, is bound to support video service, its network of properties must be the video properties. Cable network itself is designed to transmit television signals and construction, the broadcast video transmission is indispensable to any advantage. We have to do is to increase two-way cable TV network return channel, making it a two-way cable television network. We should believe in the two-way cable TV network, Modification and construction, the development of stresses in the future with great advantages.

2 Transformation in a two-way cable TV access

by: gaga

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