Patent ID: 9065887
Filing Date: 2015-06-23
Classification: H04B,H04L,H04M

Abstract:
1. A method for reducing power consumption on an x digital subscriber line (xDSL) subscriber board, comprising: obtaining a maximum downlink service bandwidth that a registered user port provides for a user, a downlink signal-to-noise ratio margin (SNRM) in line connection parameters of the user port, and transmission mode information in a line template bound to the user port, and configuring line and channel parameters in a template bound to the registered user port; determining whether the downlink SNRM is larger than a preset value, if yes, reducing the value of a maximum downlink nominal total transmission power in the template bound to a current port to reduce an excess SNRM; otherwise, configuring the maximum downlink nominal total transmission power in the template bound to the port 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 template bound, and comparing the calculated minimum undistorted power supply voltage values to find a largest value; and controlling an output voltage of a power circuit of the line driver equaling to the largest value.