Method in use for determining topological structure of cable TV HFC network

A network topology, cable TV technology, applied in the direction of data exchange network, electrical components, cable transmission adaptation, etc.

Inactive Publication Date: 2007-06-13
四川汇源科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Chinese Patent Publication No. CN1449158A, Invention Name A method for collecting network topology information, which can only be applied to the topology structure of computer network management
There is no domestic report on the method of determining the topology structure in the network management of cable television fiber optic hybrid network

Method used

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  • Method in use for determining topological structure of cable TV HFC network
  • Method in use for determining topological structure of cable TV HFC network
  • Method in use for determining topological structure of cable TV HFC network

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Experimental program
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specific Embodiment approach

[0038] Specific embodiments: see Fig. 1, the partial diagram of HFC network of the present invention.

[0039] 1. The network management computer sends out the command to clear the netlist of the network equipment. In order to ensure that the HFC network equipment regenerates new netlist data, this command can be sent several times to ensure that the netlist of all devices on the network is cleared accurately.

[0040] 2. The network management computer designates device A on the network to forward topology data

[0041] Step 1: After device A receives the forwarding command from the network management computer, it opens the uplink and downlink channels, and sends the device address of the device to the downlink channel in broadcast mode. At the same time, this data is also sent on the uplink channel. After sending Close the up and down channels.

[0042] The second step: the uplink data arrives at the rack demodulator for demodulation and then sent to the network management ...

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Abstract

The method raises accuracy of HFC network topology greatly, and generates HFC network topological graph rapidly and automatically. Each HFC network device possesses a specific address. Network management computer at front end generates topological data through following steps: computer at front end sends command of generating data to specific device; receiving the command, the specified device sends local topological data to down going transmission channels according to broadcasting mode, and meanwhile sending the data to up going channel; all devices in lower level store address data of device in upper level into local network table; the said computer at front end takes back all network topological table of HFC network devices one by one according to unicast mode; through simple process, the computer at front end forms whole HFC network topology of cable TV.

Description

technical field [0001] The present invention relates to cable television coaxial cable optical fiber mixed network network, the network management of English abbreviation HFC, and the method for generating the topological structure data of the physical link of the cable television optical fiber mixed network with branch type and star type hybrid connection network. Background technique [0002] Since HFC network management involves the relationship between devices on the HFC network, that is, the topology, according to the traditional method, it is manually entered according to the network planning and design diagram, which is easy to cause errors and omissions, making the network topology of the HFC network management system It does not match the actual network, resulting in incorrect system operation results and system fault indication errors. The prior art close to it is Chinese Patent Publication No. CN1330821A, and the title of the invention patent is a method for deter...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N7/10H04L12/24H04L12/28
Inventor 王克斌
Owner 四川汇源科技发展有限公司
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