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Distributed-type cable modem terminal system

Active Publication Date: 2015-08-12
威西码网络公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, while phasing out legacy FDM TV signals will free up additional cable bandwidth, it will only meet increasing household demand for digital TV and DOCSIS services (data) for a few years at best

Method used

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  • Distributed-type cable modem terminal system
  • Distributed-type cable modem terminal system
  • Distributed-type cable modem terminal system

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Embodiment Construction

[0060] In one embodiment, the present invention may be a distributed cable modem termination system (CMTS) for a hybrid fiber cable (HFC) network. This system will typically consist of multiple parts.

[0061] In some embodiments, the system will work substantially independently of the CMTS at the cable plant, and will essentially serve to supplement the functionality of prior art CMTSs with the addition of a minimal amount of new equipment at the cable plant. Here, this new equipment at the cable plant cable will primarily consist of a Tier 2 / 3 switch, a virtual shelf management system (to be described), and appropriate MAC and PHY devices to send and receive data along the fiber . This prior art cable plant CMTS continues to operate as before, with one difference that the cable operator should provide some empty channels to provide room for the new channels provided by the present invention.

[0062] In other embodiments, parts of the system will be embedded in a high-leve...

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PUM

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Abstract

The invention relates to a distributed-type cable modem terminal system. The system is used for a distributed-type CMTS (cable modem terminal system) device which serves HFC CATV networks of a plurality of adjacent regions through a plurality of independent cables. A plurality of QAM modems which are used for providing data for the plurality of independent cables are disposed between a plurality of QAM modems located at a cable facility and a plurality of remote QAM modems ideally located at a plurality of optical fiber nodes. The system can employ one first optical fiber to transmit a group of basic CATV QAM data waveforms to the nodes, and also can employ one substitute optical fiber or substitute optical fiber frequency. Moreover, the system can freely employ protocols, such as an Ethernet protocol to enable a second group of IP / required data to be transmitted to the nodes. The nodes extract the dedicated data of each adjacent region, and enable the data to be injected into a plurality of untapped QAM channels, thereby improving the data transmission rate through finer granularity.

Description

[0001] This application is a divisional application of the invention patent application with the application number 201180015258.3, the application date is March 19, 2011, and the invention name is "distributed cable modem terminal system". Background technique [0002] Cable television (CATV), originally introduced in the late 1940s as a way to transmit television signals via coaxial cable to houses located in areas of poor reception, has been modified and expanded over the years, allowing the cable medium to deliver constant Increasing numbers of different types of digital data, including both digital television and broadband Internet data. [0003] One of the most significant improvements occurred in the 1990s when a number of major electronics and cable operator companies working through Cablelabs, a non-profit R&D association, introduced the Data Over Cable Service Interface Specification (DOCSIS). First introduced in the late 1990s as DOCSIS Version 1.0, and upgraded man...

Claims

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Application Information

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IPC IPC(8): H04L12/28H04N21/61
CPCH04L12/2801H04L12/2874H04L12/2885H04N21/6118H04N21/615H04N21/6168
Inventor 塞利姆·什洛莫·拉基布
Owner 威西码网络公司