An integrated service access system based on EPON and dual-mode STB

An integrated service and access system technology, applied in the field of integrated service access system, can solve problems such as unsatisfactory connection rate, high maintenance cost, and limited transmission distance, etc., achieve rich DVB program sources, prevent repeated construction, and simplify complexity Effect

Inactive Publication Date: 2008-08-13
LANGCHAO ELECTRONIC INFORMATION IND CO LTD
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Problems solved by technology

At present, there are many technologies for HFC two-way transformation. The main method is to use two-way HFC+Cable Modem, that is, to use the low-end frequency in the original CATV system as backhaul to achieve asymmetric transmission. This method has users The available bandwidth is limited and the HFC return channel has the disadvantages of "funnel effect"
In terms of telecommunications, ADSL access technology is currently used, but due to the limitation of bandwidth and transmission distance, it is difficult t

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  • An integrated service access system based on EPON and dual-mode STB
  • An integrated service access system based on EPON and dual-mode STB

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Embodiment Construction

[0020] The integrated service access system of the present invention is to complete the integrated access of various services carried in networks such as data networks, telecommunication networks, and radio and television networks. Various networks and on-demand servers and other equipment are connected to the central office equipment OLT of the EPON optical network through switching, protocol conversion and other equipment. The OLT uses the passive optical network structure to connect with the ONU equipment at the user end. The dual-mode set-top box and various voice, data and other equipment are connected to form an EPON-based multi-network integration integrated service access system.

[0021] Various services of data network, PSTN telecommunication network and on-demand server are carried by 1490nm wavelength after being processed by OLT, and digital TV services in broadcasting network are carried by 1550nm wavelength. The two wavelengths are sent at the central office thr...

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Abstract

The invention relates to a synthesized access system which realizes multi-information, multi-system, multi-traffic fusion based on EPON passive optical network and DVB, IPTV double mode set top box. The system includes synthesized access of loaded traffics of various type such as data network, telecommunication network, television broadcast network. The system communicates with local apparatus OLT of EPON optical network through apparatus such as switch, protocol conversion, and completes uplink and downlink load by three wavelengths of lamda1, lamda3, and lamda2 in one optical fiber applying WDM technique. OLT connects optical network unit ONU at user side through passive optical network structure. Different positions where ONU is located corresponds to positions optical fiber reaches in FTTX. ONU connects to high speed Ethernet switch, various user audio, data equipments and double mode set top box through various interfaces, and final access of two video traffic of DVB and IPTV is completed by double mode set top box, thus a synthesized traffic access system is composed.

Description

1. Technical field [0001] The invention relates to an integrated service access system which utilizes an Ethernet passive optical network and a DVB and IPTV dual-mode set-top box to realize multi-network, multi-system and multi-service integration. For the FTTX (including fiber-to-the-home FTTH, fiber-to-the-road building FTTB, fiber-to-the-floor FTTP and other structures) optical network environment, a multi-information bearer access platform with resource sharing, system compatibility, and network integration has been created. 2. Background technology [0002] Among the current mainstream access technologies, the traditional cable television network is specially developed for the transmission of broadcast and television services. To realize the transmission of interactive services such as video on demand and the Two-way transformation of shaft cable hybrid network (HFC). At present, there are many technologies for HFC two-way transformation. The main method is to use two-...

Claims

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Application Information

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IPC IPC(8): H04Q11/04H04M11/06
Inventor 季伟崔卫李晓峰刘永辉刘剑
Owner LANGCHAO ELECTRONIC INFORMATION IND CO LTD
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