Dynamic time allocation implementation method and device in digital subscriber line DSL

A digital subscriber line, dynamic time technology, applied in the direction of line transmission components, reducing crosstalk, etc., can solve the problems of inability to coexist at the same time, flexible adjustment of downlink symbols and uplink symbols, etc., to achieve the effect of reducing crosstalk

Inactive Publication Date: 2018-05-01
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Therefore, there is a conflict between the dynamic time allocation mechanism and the vectorization technology. Using the original vectorization technology will not be able to flexibly adjust the ratio of downlink symbols to uplink symbols, and the two cannot coexist

Method used

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  • Dynamic time allocation implementation method and device in digital subscriber line DSL
  • Dynamic time allocation implementation method and device in digital subscriber line DSL
  • Dynamic time allocation implementation method and device in digital subscriber line DSL

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Embodiment Construction

[0028] In order to understand the characteristics and technical content of the present invention in more detail, the implementation of the present invention will be described in detail below in conjunction with the accompanying drawings. The attached drawings are only for reference and description, and are not intended to limit the present invention.

[0029] figure 1 It is a schematic diagram of the implementation flow of the implementation method of the dynamic time allocation in the digital subscriber line in the embodiment of the present invention, such as figure 1 As shown, the implementation method of the dynamic time allocation in the digital subscriber line provided by the embodiment of the present invention includes the following steps:

[0030] Step 101: Divide the vector group of the digital subscriber line central office equipment into a plurality of branch vector groups, and the ratio of the uplink symbol and the downlink symbol of the line pair in each branch vec...

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Abstract

The invention discloses a dynamic time allocation implementation method in a digital subscriber line DSL. The method comprises the steps of: dividing a vector group of DSL local equipment into multiple branch vector groups, wherein the proportions of uplink symbols to downlink symbols of line pairs in each branch vector group are same; distributing different set orthogonal code sequences to the branch vector groups; and orthogonally processing modulation symbols in respectively corresponding branch vector groups by using the orthogonal code sequences. The invention further discloses a dynamictime allocation implementation device in the DSL.

Description

technical field [0001] The present invention relates to the digital subscriber line technology in the field of communication, in particular to a method and device for realizing dynamic time allocation in the digital subscriber line. Background technique [0002] In the digital subscriber line, when the transmission medium is a twisted pair, there is far-end voice crosstalk between the wire pairs. The existing technology is to eliminate the voice crosstalk through vectorization technology in the central office equipment. [0003] Existing vectorization technology requires very strict time synchronization: the header symbols of each frame must be strictly aligned; all line pairs in the same vectorization group, the ratio of downlink symbols and uplink symbols must be consistent. The dynamic time allocation mechanism in the DSL requires that the ratio of the number of downlink symbols to the number of uplink symbols can be flexibly adjusted according to changes in services. ...

Claims

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Application Information

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IPC IPC(8): H04B3/32
CPCH04B3/32
Inventor 刘铮
Owner ZTE CORP
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