From the RF to IP transition - the proposed two-way network around the accelerating transformation -

From the RF to IP transition - the proposed two-way network around the accelerating transformation -

(Currently, cable companies across the country are engaged in full swing Digital TV Overall conversion Speed up the TV signal from analog transmission to digital technology upgrades and conversion, to promote Digital Process has also placed an important agenda.

DVB CN Friends altar inventive, boldly suggested Radio Cable networks should be set up "by the RF to IP transition" consciousness. I think putting the word word, is a relatively complete topic: the proposed two-way network around the cable network to speed up reform, to promote awareness of RF to IP transition.

Economics by the more popular a few years ago that the existing broadcasting of digital TV promotion, can only be defined as "hard landing." To become a "soft landing", the first reserve in the support of the network infrastructure, it should be two-way network to meet the requirements of the operation of digital technology. Then, in the context of this physical platform, for digital programming package, bearing, regulatory and business-related pay and other value-added operations, is another matter.

It is understood that the country has completed a two-way mesh network Rebuilding an amount not more. I analyzed the general main reasons:

1, trapped in the shackles of economic conditions: the first shipment of money is hard, leave it, and how do it?

2, the network pattern of development restrictions: the country is different to county administrative area is, there is the railway, mining, forestry, large state-owned enterprises, vertical management of provincial departments, cities and counties built cable network radio and television networks (the local network), while the railway, mining, forestry, construction of large state-owned enterprises also have independent cable network (referred to as enterprise network). Independent, development of mutual restraint, and even some corporate networks than to the large number of local networks. Up to now, many parts of the enterprise network has not yet integrated into the local net. In a group of cable networks around the long-term fan separatism, feudal disputes the Warring States period, the cable network group, network, scale to be integrated.

3, two-way network technology support system has not been perfect: it was made more imperfect CMTS technology, even the uplink frequency division, according to American standard, European standard designated unclear which program better.

More excellent example of transformation of digital two-way network should be said in Shenzhen. Application CMTS out INTENET access technologies, user penetration rate is not bad. CMTS people know about, its largest point is deadly: convergence noise. Can not solve it, you can define what is meant by pines. The transmission of four shielded RF cable to connect the shielding performance of first-class material compliance (when people do the materials, less able to meet the requirements of the poor.), The joint process to be superb, and so a series of problems must be solved before. Shenzhen network of the above problems all the bases, almost all foreigners with the material, only the cheap construction costs, which also makes other Internet companies ashamed see item back.

Technology advance and delay on the related industrial chain has positive and negative effects. The new century, introduce new technologies also for the entire industry into a vigor and vitality. Two-way network Broadband Technology program has a non-poor: ADSL, CMTS + CM, EPON + LAN, EPON + EoC, GPON, etc.. The face of this complex technology, radio and television networks do not know how to choose a company, like "For beautiful eyes gradually instead of squandering it."

Decision makers choose the kind of broadband access to the technology, also determine how the transformation of two-way network. Oh, after all, decided to butt heads.

Broadcasting Network in a tumultuous era of technical change, RF (radio frequency) technology, we must die, go to bed, and replaced Optical transmission , IP technology; network layout is no longer the single tree, star, ring, extension type, etc. to divide up, but with the Intenet access, the network pattern also occurred in gradient; is not only a "last km "battle to defend, based on IP technology backbone network, metropolitan area network are behind, or say there is a so-called tiger of Mao Yan what does not exist? Only for IP-based bearer network technologies, such IPOverSDH, IPOverDVB, IPOverX so multiple replication technology, to go further.

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