Method, device and system for reducing cross-talk in digital subscriber line service transmission

A digital subscriber line and service transmission technology, applied in the field of communications, can solve the problems of inconsistent operation and maintenance habits, large amount of algorithm calculation, large amount of data collection, etc., to improve user satisfaction, reduce crosstalk, and reduce spectrum tuning. Effect

Active Publication Date: 2013-10-09
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in this way, it is implemented after the service is provisioned, which does not conform to the operation and maintenance habits of the bureau; in addition, because the DSM L2 algorithm needs to collect a large amount of data to calculate the crosstalk between every two lines of the line, and then Algorithm optimization based on crosstalk channels is highly complex; and the amount of data collection is very large, the algorithm calculation is relatively large, and the optimization cycle is very long

Method used

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  • Method, device and system for reducing cross-talk in digital subscriber line service transmission
  • Method, device and system for reducing cross-talk in digital subscriber line service transmission
  • Method, device and system for reducing cross-talk in digital subscriber line service transmission

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Embodiment 1

[0030] In the prior art, in order to reduce crosstalk between lines, line spectrum optimization is usually performed during digital subscriber line service transmission after service provisioning.

[0031] In order to avoid the above defects, the embodiment of the present invention provides a method for reducing crosstalk between lines in digital subscriber line service transmission, such as figure 1 As shown, the method may include the following steps:

[0032] Step 101. Before the service is released, according to the service transmission rate and topology scene parameters provided by the service receiving device, the service sender obtains the power spectral density of the line during the service receiving process of the service receiving device;

[0033] In this step, the line topology scene parameters may include: the number of line pairs, line length and line diameter information in the same bundle of cables in the line;

[0034] Combined with the service transmission r...

Embodiment 2

[0040] In the embodiment of the present invention, such as figure 2 As shown, in the above step 101, "according to the service transmission rate and topology scene parameters provided by the service receiving device, the service sender obtains the power spectral density of the line during the service receiving process of the service receiving device" is implemented as follows:

[0041] Step 201, the service sender presets a plurality of topology scene parameters, and calculates the maximum crosstalk value of the line corresponding to each topology scene parameter;

[0042] Step 202, the service sender determines the topology scene parameter that matches the service receiving side device among the preset multiple topology scene parameters, obtains the maximum crosstalk value of the corresponding line, and according to the service receiving side device The provided service transmission rate is calculated to obtain the power spectral density of the line when the service receivin...

Embodiment 3

[0051] In the above-mentioned embodiment, the PSD of the line is directly calculated after matching the topology scene parameters. In practical applications, the PSD required for the current service release may be the same as the PSD value required for the previous service release. recalculation process.

[0052] In order to reduce the PSD repeated calculation performed by the service sender, in another embodiment provided by the present invention, such as image 3 As shown, the implementation of the above step 101 also includes:

[0053] Step 203, the service sender stores the obtained power spectral density information corresponding to the lines in the service receiving process of each service receiving device, generates a power spectral density template, and stores the service transmission rate and topology scene parameters provided by each service receiving device ;

[0054] In this step, the service sender generates a PSD template, which respectively records the PSD in...

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Abstract

A method, an apparatus, and a system for reducing line-to-line crosstalk during transmission of a digital subscriber line service are disclosed, where the method includes: before a service is provisioned, obtaining, by a service provider according to a service transmission rate and a topology scenario parameter that are provided by a service receiving side device, a power spectral density of a line in a process of receiving a service by the service receiving side device; and provisioning, by the service provider, a service for the service receiving side device according to the power spectral density.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a method, device and system for reducing crosstalk between lines in digital subscriber line service transmission. Background technique [0002] DSL (Digital Subscriber Line, Digital Subscriber Line) technology is a high-speed transmission technology for data transmission through telephone twisted pair, namely UTP (Unshielded Twist Pair, unshielded twisted pair), including ADSL (Asymmetrical Digital Subscriber Line, non- Symmetrical Digital Subscriber Line), VDSL (Very-high-bit-rate Digital Subscriber Line, very high-speed digital subscriber line), IDSL (ISDN Digital Subscriber Line, subscriber digital line based on ISDN (Integrated Services Digital Network, Integrated Services Digital Network) ) and SHDSL (Single-pair High-bit-rate Digital Subscriber Line, Single-pair High-bit-rate Digital Subscriber Line), etc., the above-mentioned digital subscriber lines are collectivel...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B3/32H04L25/02H04L25/03
CPCH04B3/32H04M11/062H04M3/304H04M3/34
Inventor 周浪涂建平
Owner HUAWEI TECH CO LTD
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