Method and apparatus of determining working scene of DSL transceiver

A transceiver and scene technology, applied in the field of network communication, can solve problems such as unresolvable crosstalk, system transmission performance degradation, and negative effects, and achieve the effects of saving labor costs, optimizing overall performance, and improving the line rate

Inactive Publication Date: 2006-11-15
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

for Figure 2 to Figure 6 Not all the working scenarios listed in can adopt the same crosstalk reduction technology. Usually, for a certain technology, it can play a positive role only when it is used in conjunction with a specific working scenario. On the contrary, it not only cannot solve the crosstalk problem , may also bring about negative impacts, resulting in further degradation of the transmission performance of the system
[0009] The current problem is that for a pair of transceivers, it cannot know which working scenario it is in
Therefore, it is impossible to adaptively select the appropriate crosstalk reduction technology for oneself to effectively avoid the crosstalk problem in the transmission line

Method used

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  • Method and apparatus of determining working scene of DSL transceiver
  • Method and apparatus of determining working scene of DSL transceiver
  • Method and apparatus of determining working scene of DSL transceiver

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Embodiment Construction

[0056] The main purpose of the present invention is to use the parameters obtained in the handshake (handshake) and training (training) processes to determine the working scene of the DSL transceiver, so as to facilitate the selection of different crosstalk-reducing power control technical solutions based on different application scenarios.

[0057] According to the existing DSL transmission technology, the xDSL transceiver can obtain parameters such as the electrical length L of the line and the noise power spectral density N(f) during the initialization process. The present invention determines the working scene of the xDSL transceiver based on the parameter information.

[0058] exist figure 2 In the shown application scenario 1, all lines are in a state of equal length. Now take the line between the second central office 2 and the fourth CPE4 as an example to explain the implementation of the present invention.

[0059] The noise received by the second CO (central offic...

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Abstract

The invention relates to a method to determine xDSL transceiver working scene that includes the following steps: gaining the electric length and noise power parameter of the current line; determine the working scene of the current xDSL transceiver. The invention could optimize the whole capability and improve line-out ratio. And it could effectively save manpower cost and the constructing and maintaining cost.

Description

technical field [0001] The invention relates to the technical field of network communication, in particular to a method and a device for determining the working scene of a DSL transceiver. Background technique [0002] Currently, in a communication system, xDSL (Digital Subscriber Loop Line) is a high-speed data transmission technology transmitted over a telephone twisted pair (unshielded twisted pair, Unshielded Twist Pair, UTP). In addition to DSL with baseband transmission such as IDSL (ISDN Digital Subscriber Line) and HDSL (High Speed ​​Digital Subscriber Line), xDSL with passband transmission uses frequency division multiplexing technology to make xDSL and POTS (traditional telephone service) coexist on the same twisted pair Online, where xDSL occupies the high frequency band, and POTS occupies the baseband part below 4KHz, such as figure 1 As shown, the POTS signal is separated from the xDSL signal through a splitter, and the system providing multiple xDSL access is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/24H04L5/06
Inventor 石清泉
Owner HUAWEI TECH CO LTD
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