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Method and system for improving VDSL stability

A high-frequency, very high-speed technology, applied in the field of VDSL line stability, to solve stability problems and improve stability

Inactive Publication Date: 2008-08-06
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0013] The purpose of the embodiments of the present invention is to provide a method and system for improving VDSL stability, so as to solve the problem of improving VDSL stability while ensuring the transmission rate of VDSL lines

Method used

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  • Method and system for improving VDSL stability
  • Method and system for improving VDSL stability
  • Method and system for improving VDSL stability

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Embodiment Construction

[0028]The basic principle of the present invention is to divide the VDSL physical channel into independent basic channels and extended channels, wherein the basic channels use low-frequency signals to transmit messages such as NTR, IB, eoc and delay-sensitive data, and the extended channels use high-frequency signals to transmit other data At the receiving end, the bit error rate and other parameters of the basic channel and the extended channel are counted separately. Since the crosstalk of the low-frequency signal is relatively small, the basic channel is relatively stable, and messages such as eoc are transmitted in the relatively stable basic channel. , so even if the bit error rate of the extension channel is relatively high, the link between the transceivers to exchange messages remains normal, so that a series of dynamic functions such as SRA can be completed normally, so as to ensure that the entire line will not be dropped. Solve the stability problem of the line.

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Abstract

The present invention discloses a method and a system for VDSL data transmission, the method comprises the following steps: a. the physical medium specific transmission coverage layer PMS-TC of very high bit-rate digital subscriber line VDSL divides the sent data into a first portion and a second portion; b. the PMS-TC transmits the first portion data to a receiving end via a basic physical channel, and transmits the second portion data to the receiving end via an extended physical channel.

Description

technical field [0001] The present invention relates to the technical field of DSL (Digital Subscriber Line, digital subscriber line), specifically, relates to the VDSL line stability technology. Background technique [0002] Digital subscriber line technology is a high-speed transmission technology for data transmission through telephone twisted pair, namely unshielded twisted pair (Unshielded Twist Pair, UTP), including asymmetrical digital subscriber line (Asymmetrical Digital Subscriber Line, ADSL), very high speed Digital Subscriber Line (Very-high-bit-rate Digital Subscriber Line, VDSL), ISDN Digital Subscriber Line (IDSL) based on Integrated Services Digital Network (Integrated Services Digital Network, ISDN) and single-pair high-speed digital subscriber line ( Single-pair High-bit-rate Digital Subscriber Line, SHDSL) etc. [0003] In various digital subscriber line technologies (xDSL), in addition to DSL with baseband transmission such as IDSL and SHDSL, DSL with pa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/56H04M11/06H04L12/24H04L12/28
Inventor 方李明
Owner HUAWEI TECH CO LTD
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