Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Uplink power decreasing method, device and system in digital subscriber lines

A digital subscriber line and subscriber line technology, applied in line transmission parts, telephone communications, electrical components, etc., can solve the problems of operator inconvenience, inability to guarantee performance, and excessive short-line PSD reduction, to maximize gain and ensure Stability and the effect of enhancing potential demand

Active Publication Date: 2010-06-09
HUAWEI TECH CO LTD
View PDF3 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0019] When implementing the present invention, the inventor found that the existing method still has shortcomings: the technical solution has added a FEXT compensation item to avoid short-term PSD cut down too much
[0021] In addition, the current UPBO parameters need to be manually configured, and it is difficult to choose a better reference line (for example, in VDSL, most of the 750 meters choose this fixed length as the Reference line length), you can only configure parameter a and parameter b empirically, which will bring a lot of inconvenience to the operator, and cannot guarantee the best performance

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Uplink power decreasing method, device and system in digital subscriber lines
  • Uplink power decreasing method, device and system in digital subscriber lines
  • Uplink power decreasing method, device and system in digital subscriber lines

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0059] Steps to collect user line information:

[0060] Collect subscriber line operation information, such as Hlog (subscriber line attenuation), QLN (static noise), b-table (bit allocation table), Profile (template), bandplan (spectrum planning), etc., topology information, such as subscriber line length and distribution ;

[0061] Steps to get the length of the reference line:

[0062] Subscriber lines are divided into multiple groups (such as G groups) according to the length of the subscriber lines, and the average line length of each group is calculated as the line length of the representative subscriber line (L g ), according to the number of user lines representing user groups (N total ), the weighted average of the representative user line is used to obtain the length of the reference line (L_ref), and the calculation formula is as follows:

[0063] L _ ref = Σ g = ...

Embodiment approach 2

[0077] Steps to collect user line information:

[0078] Collect subscriber line operation information, such as Hlog (subscriber line attenuation), QLN (static noise), b-table (bit allocation table), Profile (template), bandplan (spectrum planning), etc., topology information, such as subscriber line length and distribution ;

[0079] Steps to get the length of the reference line:

[0080] Start to traverse from the shortest line length to the longest line length at a certain step to search for the optimal reference line length. You can first select a length as the current reference line length;

[0081] Calculate the a and parameter b of each uplink frequency band of each pair of lines according to the length of the current reference line, and obtain the frequency point FMAX corresponding to the maximum subcarrier used by each subscriber line. This process can also be performed in the two ways described in Embodiment 1. to get.

[0082] Determine the maximum cut-off frequency...

Embodiment approach 3

[0097] Steps to collect user line information:

[0098] Collect subscriber line operation information, such as Hlog (subscriber line attenuation), QLN (static noise), b-table (bit allocation table), Profile (template), bandplan (spectrum planning), etc., topology information, such as subscriber line length and distribution ;

[0099] Steps to get the length of the reference line:

[0100] Select different reference line lengths for each frequency band, find the minimum value of all subscriber lines in the maximum usable frequency point of the frequency band according to bit loading, and take the length of the subscriber line corresponding to the minimum value as the length of the reference line;

[0101] Steps to obtain uplink power down-regulation parameters:

[0102] Calculate the parameter a and parameter b of each uplink frequency band of each pair of lines according to the reference line length of each frequency band, and calculate the usable frequency points of each fr...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The embodiment of the invention discloses an uplink power decreasing method in digital subscriber lines, comprising the following steps of: collecting subscriber line information; determining the length of a reference line according to the subscriber line information; obtaining uplink power decreasing parameters of each uplink frequency range of each subscriber line according to the determined length of the reference line, wherein the uplink power decreasing parameters comprise a parameter a, a parameter b and a maximum cut-off frequency point UPNOFMAX which correspond to the frequency ranges; and executing an uplink power decreasing process on the frequency ranges of corresponding subscriber lines within a range below the maximum cut-off frequency point according to the uplink power decreasing parameters. The embodiment of the invention also discloses uplink power decreasing method and device in corresponding digital subscriber lines. The invention can furthest improve the uplink rate of a short line at the same time of guaranteeing the stability of long lines, and is completely compatible with the traditional UPBO mode.

Description

technical field [0001] The present invention relates to the field of digital communication, in particular to a Digital Subscriber Line (Digital Subscriber Line, DSL) Upstream Power Back-Off (Upstream Power Back-Off, UPBO) method, device and system. 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 (ADSL) ), Very-high-bit-rate Digital Subscriber Line (VDSL), ISDN Digital Subscriber Line (IDSL) based on Integrated Services Digital Network (ISDN) and single-line to high-speed Digital Subscriber Line (Single-pair High-bit-rate Digital Subscriber Line, SHDSL), etc., are collectively referred to as xDSL below. [0003] Among various digital subscriber line technologies (xDSL), in addition to DSL with baseband transmission such as IDSL and SHDSL, DSL with passband transmission uses freq...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H04B3/04
CPCH04B3/32H04L12/66H04M11/062
Inventor 方李明涂建平
Owner HUAWEI TECH CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com