Method, device and system for reducing energy consumption of xDSL (x digital subscriber line) subscriber board

Abstract

The present invention discloses a method for reducing power consumption on an xDSL subscriber board, including: obtaining a maximum downlink service bandwidth that a registered user port provides for a user, a downlink signal-to-noise ratio margin in line connection parameters of the user port, and transmission mode information in a line template bound to the user port; determining whether the downlink signal-to-noise ratio margin is larger than a preset value, if yes, reducing a maximum downlink nominal total transmission power; otherwise, configuring the maximum downlink nominal total transmission power as a downlink transmit power in line connection parameters of the current port; calculating, according to the maximum downlink nominal total transmission power and transmission mode, a minimum undistorted power supply voltage required by a corresponding line driver of each registered user port under the current configuration of the bound template, comparing minimum undistorted power supply voltage values, to find the largest value; and controlling an output voltage of a power module of a line driver equaling to the largest value.

Description

technical field [0001] The invention relates to the technical field of communications, in particular to a method, device and system for reducing energy consumption of an xDSL subscriber board. Background technique [0002] Digital Subscriber Lines (xDSL, Digital Subscriber Lines) technology is currently a widely used broadband access technology, supporting the Internet access needs of hundreds of millions of users around the world. The number of xDSL access devices is huge, and the annual power consumption is also quite huge. Not only does the operator have to pay a huge operating cost for this every year, but it also brings a lot of carbon dioxide emissions, aggravating the greenhouse effect and environmental degradation. [0003] At present, there are two methods for optimizing the transmission power of the user port line on the xDSL user board (also called single board or line card or Line Card): [0004] Method 1: By restricting the maximum downlink noise margin in the ...

AI Technical Summary

Problems solved by technology

[0007] (1) Although method 1 can reduce the energy consumption of xDSL subscriber boards, the transmission power reduction of this method is very limited, and the power transmission efficiency of the line driver is low. In addition, many Modems on the existing network cannot support the Max SNRM limitation feature, and there is intercommunication question

[0008] (2) Although the second method can reduce the energy consumption of the xDSL subscriber board, it only passively optimizes the power supply voltage of the line driver according to the output power, so the energy consumption reduction is limited

At the same time, when multiple line drivers use one power supply at the same time, the power supply needs to meet the power transmission requirements of all line drivers at the same time, so it is difficult to reduce the power supply voltage and cannot achieve a good energy-saving effect

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