Coaxial cable access and networking method based on HFC network

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 an HFC network. Background technique: [0002] At present, the access application of EPON+c.LINK and coaxial cable has always 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. Recently, some operators are also using HomePNA3.0 technology to make network transformation attempts. 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 study, specifically in the following aspects: [0004] 1. The problem of service quality [0005] Tradi...

AI Technical Summary

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 low bandwidth, limited number of covered users, and large interference in terms of service quality. question:

[0016] 2. The problem of upgrading

[0018] 3. Problems of integration with digital TV services

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