C-DOCSIS (China-Data Over Cable Service Interface Specifications) networking architecture-based reverse link testing method and system

A reverse link and test system technology, applied in the field of reverse link test method and system based on C-DOCSIS network structure, can solve the problems of high cost, increase of total test cost, inconvenient and other problems, and reduce the total cost. cost effect

Active Publication Date: 2015-06-10
GUANGZHOU DIGITAL MEDIA GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the existing C-DOCSIS network structure needs to add an additional optical fiber when testing the reverse radio frequency link, which undoubtedly increases the total cost of the test and is not convenient enough
In addition, the existing C-DOCSIS network structure needs to be equipped with a dedicated handheld imported tester when performing reverse radio frequency link testing. The handheld imported tester is expensive and further increases the total cost of the test.

Method used

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  • C-DOCSIS (China-Data Over Cable Service Interface Specifications) networking architecture-based reverse link testing method and system
  • C-DOCSIS (China-Data Over Cable Service Interface Specifications) networking architecture-based reverse link testing method and system
  • C-DOCSIS (China-Data Over Cable Service Interface Specifications) networking architecture-based reverse link testing method and system

Examples

Experimental program
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Embodiment 1

[0054] This embodiment describes the reverse link test module and the handheld test terminal of the reverse link test system based on the C-DOCSIS network structure of the present invention.

[0055] The reverse link test module of the present invention has following four main functions:

[0056] a. It can be matched with CCMTS of various brands and models, can be built into CCMTS equipment of various brands and models, and can complete data transmission with handheld test terminals.

[0057] b. There are more than 8 uplink debugging frequency points and the frequency scanning collects the RF signals uploaded by the handheld test terminal within the frequency range of 0 to 65MHz. The ZTE frequency of the debugging frequency point can be manually set. When it overlaps with the CCMTS uplink frequency, it will not affect Normal use of business.

[0058] c. The downlink transmission frequency point can be customized, and the output level is greater than 110dBuV; the reverse recei...

Embodiment 2

[0064] This embodiment describes the main implementation process of the present invention.

[0065] The present invention moves down the function of the 9581sst equipment in the sub-front-end computer room to the CCMTS, utilizes a reverse link test module equivalent to the 9581sst equipment in the sub-front-end computer room for testing, and uses the domestic hand-held test terminal to communicate with the reverse link The link test module communicates to achieve the same test and troubleshooting effect as traditional networking, which reduces the total cost of testing and improves the troubleshooting rate.

[0066] Main testing and troubleshooting process of the present invention are:

[0067] S1. Handhold a domestic hand-held test terminal to lock the downlink signal emitted by the reverse link module inside the CCMTS.

[0068] S2. After the domestic hand-held test terminal locks the downlink signal, it transmits the return signal to the reverse link test module inside the ...

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Abstract

The invention discloses a C-DOCSIS (China-Data Over Cable Service Interface Specifications) networking architecture-based reverse link testing method and system. The system comprises a secondary front end, an HFC (Hybrid Fiber Coaxial) network and a user side, wherein the secondary front end comprises an OLT (Optical Line Terminal) box, a radio frequency distribution system and a light emitting platform connected with a radio frequency distribution system; the HFC network comprises a unidirectional optical machine, a CCMTS (China-cable Modem Terminal Systems) and a bidirectional amplifier; a reverse link testing module is arranged in the CCMTS; the user side is a handheld test terminal; an output end of the light emitting platform is connected with an input end of the unidirectional optical machine through an optical fiber; the OLT box is connected with the reverse link testing module through a single-core optical fiber; the reverse link testing module and the unidirectional optical machine are both connected with the bidirectional amplifier through a coaxial cable; the bidirectional amplifier is connected with the handheld test terminal through the coaxial cable. The method and the system have the advantages of low cost and convenience, and can be widely applied to the field of television.

Description

technical field [0001] The invention relates to the field of television, in particular to a reverse link testing method and system based on a C-DOCSIS networking structure. Background technique [0002] With the advent of the digital wave, the traditional cable TV industry has been hit by unprecedented impact. Interaction, penetration, and triple play within the industry are imperative. Full-service operation is the only way for radio and television to develop in the new environment; and the C-DOCSIS group With the advantages of high bandwidth and low cost, the network built in the network mode will lead the innovation of the entire broadcasting and television industry. [0003] In order to guarantee the QOS of network transmission and improve user satisfaction, the HFC network based on C-DOCSIS will become the main networking model of radio and television networks in the future. However, the biggest problem existing in the two-way transmission of the HFC network based on C...

Claims

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Application Information

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IPC IPC(8): H04L12/26H04N17/00H04N21/647
Inventor 刘明亮徐冉郑宗生李锐孙亮林俏锋李瑞珑罗仑刘健文周伟徐伟君
Owner GUANGZHOU DIGITAL MEDIA GRP CO LTD
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