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Single-end evaluation method for ADSL bearing capacity

A digital subscriber line, digital subscriber line technology, applied in the direction of digital transmission system, data exchange network, electrical components, etc., can solve problems such as judging lines

Inactive Publication Date: 2007-05-23
SHANGHAI SUSR TELECOM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] With the increasing number of asymmetric digital subscribers, the crosstalk between other services on the line and its own services has seriously affected the normal opening of asymmetric digital subscriber line services. At the same time, there are too many connectors on the line, and the aging of the line has seriously affected the line transmission network. Therefore, how to quickly determine the line quality before the asymmetric digital subscriber line service is opened has become a very troublesome issue for operators: whether the line can open the asymmetric digital subscriber proposed by the user online business requirements? Can the line meet the user's application for speed increase? What is the reason why the asymmetric digital subscriber line service cannot be activated on the line? Therefore, there is a need for a method that can be started directly at the front desk business terminal to evaluate the lines that need to open different types of asymmetric digital subscriber line services, and see what the maximum rate of the lines can be opened, so that users can know whether the line quality is good when they apply for installation. Meet user needs, reduce blind installation, and greatly improve telecom operators' installation efficiency and user satisfaction

Method used

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  • Single-end evaluation method for ADSL bearing capacity
  • Single-end evaluation method for ADSL bearing capacity
  • Single-end evaluation method for ADSL bearing capacity

Examples

Experimental program
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Effect test

Embodiment 1

[0036] As shown in Figure 2, it is asymmetric digital subscriber line service (ADSL / ADSL2 / ADSL2+) circuit evaluation test and application system block diagram, described test system is made up of front desk business terminal 1, broadband test interface 2, single-ended discrete multi-tone The test server 3 of the modulation algorithm software, the broadband test equipment 4, the central office switch 5 with the function of automatically grasping the line, the user line 7 and the user terminal 8 are composed.

[0037] As shown in Figure 3, it is a schematic structural diagram of broadband test equipment, and described broadband test equipment 4 possesses noise data measurement and frequency response test functions in the asymmetrical digital subscriber line service (ADSL / ADSL2 / ADSL2+) frequency band, and is output by the main control Module 9, noise test module 10, frequency response test module 11.

[0038]In this test application system, the front desk business terminal 1, the...

Embodiment 2

[0070] A single-end evaluation method for the carrying capacity of an asymmetric digital subscriber line, using a DSLAM device 6 with an automatic line grabbing function, which is a product that operators and users can purchase in the market, and is used as a known condition. Others are the same as in Example 1.

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Abstract

The invention relates to a single-end evaluate method with asymmetry digit user line support ability, wherein the invention is characterized in that: the foreground operator provides the program with needed tested line to the wideband test interface; the interface sends it to relative wideband test server, which will automatically pick line via exchanger and control bandwidth tester to test noise signal, frequency response and line length; feeding back the test result to the wideband test server whose single-end discrete modulation algorism software will calculate noise PSD, frequency response curvature, sub channel signal / noise ration and ascending / descending ration, to judge based on the result. The invention can avoid affected by remote user, to apply kinds of normal asymmetry digit service terminals, to evaluate the quality of line.

Description

technical field [0001] The present invention relates to a single-end evaluation method for the carrying capacity of an asymmetric digital subscriber line, in particular to a single-end evaluation calculation method for the line carrying capacity of an asymmetric digital subscriber line service (ADSL / ADSL2 / ADSL2+) (single-end discrete Multi-tone modulation algorithm) and its application, can evaluate the rate of the asymmetric digital subscriber line (ADSL / ADSL2 / ADSL2+) line that is being promoted and used in China, and solve the problems related to the asymmetric digital subscriber line (ADSL / ADSL2 / ADSL2+) issues such as line pre-evaluation before opening and line quality evaluation during line maintenance after opening belong to the field of communication technology. Background technique [0002] ADSL adopts the discrete multi-tone modulation (DMT) method, so that ordinary copper twisted pair can not only transmit traditional voice services, but also load broadband data se...

Claims

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Application Information

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IPC IPC(8): H04L12/26H04L25/02
Inventor 姜先荣张博陆云金少舫
Owner SHANGHAI SUSR TELECOM TECH
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