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A data transmission method suitable for two-way transmission of cable TV network

A technology of cable television network and data transmission method, which is applied in the direction of cable transmission adaptation, multi-frequency code system, etc., can solve the problems of low resource utilization rate and poor compatibility, etc.

Inactive Publication Date: 2011-11-30
BEIJING GAN TONG TECH
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Problems solved by technology

[0007] In view of this, the main purpose of the present invention is to provide a data transmission method suitable for two-way transmission of cable TV network based on EOC technology, so as to solve the problem of low resource utilization and poor compatibility of the current relevant standards for my country's unique spectrum division. The problem

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  • A data transmission method suitable for two-way transmission of cable TV network
  • A data transmission method suitable for two-way transmission of cable TV network
  • A data transmission method suitable for two-way transmission of cable TV network

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Embodiment Construction

[0072] In order to make the objectives, technical solutions, and advantages of the present invention clearer, the following further describes the present invention in detail in conjunction with specific embodiments and with reference to the accompanying drawings.

[0073] The present invention provides a data transmission method based on EOC technology that is suitable for two-way transmission of cable TV networks. Based on the current status of low-frequency spectrum resources of cable TV networks in my country, four bandwidth modes using OFDM modulation technology are proposed, and then based on these four This bandwidth mode and the current mainstream related technical standards have designed an EOC physical layer solution that can evolve smoothly and is compatible with the current mainstream standards and modes. The specific implementation principles are as follows:

[0074] 1. Based on the current status of my country's cable TV network low frequency spectrum resources, four ban...

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Abstract

The invention discloses a data transmission method suitable for two-way transmission of a cable TV network. The method is implemented based on EOC technology, and includes: configuring four bandwidth modes using orthogonal frequency division multiplexing modulation technology; generating The time domain waveform of the preamble symbol, the frame control OFDM symbol and the data OFDM symbol; the time domain waveform of the preamble symbol, the frame control OFDM symbol and the data OFDM symbol will be generated The multiplexing symbols are combined to form a complete LoREOC physical frame; and the LoREOC physical frame is used for data transmission to realize data transmission suitable for two-way transmission of cable television networks. The present invention solves the problem of low resource utilization rate and poor compatibility of current relevant standards for my country's specific frequency spectrum division.

Description

Technical field [0001] The invention relates to the technical field of coaxial cable transmission of Ethernet data (Ethernet Over Cable, EOC), in particular to a data transmission method based on EOC technology and suitable for two-way transmission of a cable television network. Background technique [0002] The two-way transmission of the coaxial cable of the cable TV network is an important basic content in the triple play. In recent years, various domestic radio and television operators have applied various technologies to the two-way transmission of coaxial cables, and collectively referred to these technologies as coaxial cable transmission Ethernet data (Ethernet Over Cable, EOC) technology. In fact, most of the EOC technologies are not suitable for my country's cable TV network, and the security performance is also poor. It is imperative to develop an EOC overall solution suitable for two-way transmission of my country's cable TV network. [0003] my country’s cable televis...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L27/26H04N7/10
Inventor 罗嗣超
Owner BEIJING GAN TONG TECH
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