Method, apparatus and system for reducing interference in digital subscriber line

A digital subscriber line and subscriber line technology, applied in the direction of wired transmission system, transmission system, line transmission components, etc., can solve the problems of not supporting error calculation, consuming large cost, and long cycle, so as to avoid time cost, eliminate Human power, the effect of eliminating far-end crosstalk

CN103004099BActive Publication Date: 2014-11-05HUAWEI TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2014-11-05

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Abstract

The present invention provides a method, an apparatus, and a system for reducing digital subscriber line interference, so as to reduce, as much as possible, or eliminate an influence of a legacy line on a vectored line in a digital subscriber line system. The method includes: identifying at least one legacy digital subscriber line in a digital subscriber line DSL legacy line set; obtaining a target power spectral density mask value of the legacy digital subscriber line; and reducing power spectral density of a transmit signal on the legacy digital subscriber line according to the target power spectral density mask value. The method according to embodiments of the present invention can achieve an effect of eliminating far end crosstalk caused on a Vectored DSL line without upgrading or replacing a VDSL2 Legacy CPE, thereby reducing time consumed by the upgrade, and eliminating human and material (such as device) costs caused by the upgrade.
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Description

technical field

[0001] The present invention relates to the communication field, in particular to a method, device and system for reducing digital subscriber line interference. Background technique

[0002] Digital Subscriber Line (DSL) technology is a high-speed transmission technology for data transmission through telephone twisted pair, namely Unshielded Twist Pair (UTP), including Asymmetrical Digital Subscriber Line (Asymmetrical Digital Subscriber Line (ADSL), Very-high-bit-rate Digital Subscriber Line (VDSL), ISDN Digital Subscriber Line based on Integrated Services Digital Network (ISDN), IDSL), etc., xDSL is the general term for the above-mentioned digital subscriber lines.

[0003] In addition to IDSL and DSL with baseband transmission such as Symmetric High bit rate Digital Subscriber Line (SHDSL), xDSL with passband transmission uses frequency division multiplexing technology to make xDSL and the traditional telephone service (POTS, Plain Old Telephone Service) ...

Examples

Embodiment Construction

[0076] Embodiments of the present invention provide a method, device and system for reducing digital subscriber line interference, so as to reduce or eliminate the influence of traditional digital subscriber lines on vectored lines in a digital subscriber line system as much as possible.

[0077] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0078] Please refer to the attached figure 2 , is a schematic flowchart of a method for reducing digital subscriber line interference provided by an embodimen...