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Method for controlling wire communication quality

A technology for communication quality and line control, applied in transmission modification based on link quality, line transmission parts, gearbox control/balance, etc., can solve problems such as unstable work

Inactive Publication Date: 2008-02-06
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0039] The purpose of the present invention is to provide a method for controlling the quality of line communication, so as to solve the problem in the prior art that the user line modem works unstable when iteratively injecting water while performing communication

Method used

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  • Method for controlling wire communication quality
  • Method for controlling wire communication quality
  • Method for controlling wire communication quality

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Experimental program
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Effect test

Embodiment Construction

[0064] The basic principle of the present invention is the inner loop of performing iterative water injection in the subscriber line (because the scheme described in the present invention can be applicable to the process of each subscriber line completing the iterative water injection in a certain order, and can also be applicable to each subscriber line independently Complete the iterative water injection process. To be different from the prior art, the water injection cycle is used hereinafter to refer to the inner loop of a certain subscriber line). The table adopts the objective function w generated according to each water injection cycle of iterative water injection n b k n -λ n the s k n The transmit power s of each subcarrier TONE with the largest value k n Subtracting the margin due to the noise increase of other lines can avoid the problem of unstable operation of one user line due to noise changes of other user lines when sending data during the iterative water...

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Abstract

The present invention discloses a method for controlling quality of line communication which comprises the steps as follows: a, a subscriber line modem transmits data in the process of iteration affusion and the velocity of transmitting data adopts the data transmitting velocity that the aforesaid subscriber line after degradation affirms in the process of every affusion circle of iteration affusion. The present invention solves the prior art defect and adopts that the subscriber line modem transmits data simultaneously in every affusion circle of iteration affusion. The bit table item corresponding to the velocity of transmitting data adopts that the transmitting power skn of every son carrier wave TONE which is caused according to every affusion circle of iteration affusion and makes the highest value of an objective function wnbkn-Lambadanskn to subtracts an overmeasure by the augmenting of noise of other lines. Thereby, the present invention avoids the problem that one subscriber line works unsteadily when transmitting data because of the noise change of other subscriber lines in the process of the iteration affusion.

Description

technical field [0001] The present invention relates to DSL (Digital Subscriber Line) technology, and specifically relates to a method for controlling line communication quality. 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 passband transmissi...

Claims

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Application Information

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IPC IPC(8): H04B3/00H04B3/04H04B3/30H04B3/46H04B3/40
CPCH04L1/0002H04L5/0044
Inventor 方李明
Owner HUAWEI TECH CO LTD
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