Coaxial cable access and networking method based on HFC network

A coaxial cable and network technology, applied in the field of coaxial cable access and networking based on HFC network, can solve the problems of large interference, no clear requirements for two-way services, and low bandwidth

Active Publication Date: 2009-02-11
上海润欣科技股份有限公司
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  • Summary
  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0005] The traditional cable TV network is designed to transmit broadcast and TV programs, and there is no clear requirement for two-way service. The current access technology on the cable TV network has

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  • Coaxial cable access and networking method based on HFC network
  • Coaxial cable access and networking method based on HFC network
  • Coaxial cable access and networking method based on HFC network

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Embodiment Construction

[0041]In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific illustrations.

[0042] Such as figure 1 As shown, the head end in the scheme of the present invention is located in the central computer room and in the ring network of the metropolitan area network. The data transmission part adopts technologies such as SDH / MSTP or carrier-grade optical fiber Ethernet to form a metropolitan area ring network with other metropolitan area network nodes through optical fibers. , through such a networking method or a multi-level networking method, it can cover as much as a province, and is mainly suitable for prefecture-level cities or large cities. The TV signal transmission part uses SDH (digital signal) or analog optical fiber transmission technology (analog signal) to transmit to the next level node through optical fiber. Aft...

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Abstract

The invention discloses a coaxial cable accessing and networking method based on an HFC network. In the method, the network topology of the HFC (Hybrid Fiber Coaxial) is adopted to construct an operation network; generally, multilevel structure is adopted from the output of the headend central apparatus room to the optical nodes of the metropolitan area networks, and then from the optical nodes of the metropolitan area networks to the optical nodes of the users in a district or on a floor. From the headend central apparatus room to the optical nodes of the metropolitan area networks, the broadcast television service adopts the mode of broadcasting, and the data service adopts SDH, MSTP or intercommunication optical fiber Ethernet technology, in order to connect all the nodes into a loop circuit. At each metropolitan node, the OLT headend equipment of the EPON is deployed, and connected with the user optical nodes through the optical fiber. Four-core optical cables are generally adopted from the metropolitan optical nodes to the user optical nodes, wherein one of the optical cables is used for transmitting broadcast television programs, another optical cable is used on the EPON system (different wave length, single fiber, and double way), and the other two optical cables are reserved.

Description

Technical field: [0001] The invention relates to coaxial cable access and EPON and c.LINK technologies, in particular to a coaxial cable access and networking method based on HFC network. Background technique: [0002] At present, the access application of EPON+c.LINK and coaxial cable has been a research hotspot at home and abroad, and the maturity of related technologies has yet to be tested in the actual environment. As early as the end of the last century, some local cable TV operators in China were experimenting with DOCSIS technology, and recently some operators are trying to use HomePNA3.0 technology for network transformation. Many manufacturers, including CISCO, Motorola, and Huawei Technologies, are conducting research and development in this field. [0003] In view of some problems encountered in practical applications, related technologies are also under research, specifically in the following aspects: [0004] 1. The problem of service quality [0005] The tr...

Claims

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Application Information

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IPC IPC(8): H04L12/28H04L12/44H04H20/76
Inventor 陈舟
Owner 上海润欣科技股份有限公司
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