DPU Reverse Power Feed Strategy for Copper Access
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Solution Overview
Problem
In the FTTdp scenario, reverse power feeding by multiple subscriber lines results in inconsistent power feeding conditions with the electrical energy required for data transmission, leading to low energy efficiency due to varying states of subscriber lines.
Innovation Solution
A method and device that monitor the current working states of lines connected to the DPU, determine a powering strategy based on the power consumption state of the DPU and PSE, and adjust power feeding to ensure consistent power consumption by selecting appropriate lines in specific states (L0, L2.1, L2.2, and L3) for balanced power feeding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If reverse power feeding is performed by multiple subscriber lines without state monitoring, then power can be supplied to the DPU, but the power feeding condition is inconsistent with the electrical energy required for data transmission, resulting in low energy efficiency
Solution Approach 1:
The DPU monitors the working states of subscriber lines and adjusts power feeding strategies based on real-time feedback. The monitoring module detects line states (L0, L2.1, L2.2, L3) and the processing module uses this information to dynamically adjust power allocation, ensuring power feeding conditions match the electrical energy requirements for data transmission on each line.
Solution Approach 2:
The power feeding strategy is made dynamic by continuously monitoring line working states and adjusting power allocation accordingly. The system transitions from static power feeding to dynamic adjustment based on real-time line states, allowing the DPU to optimize energy efficiency as lines transition between different working states.
2Loss of energy
If power feeding is adjusted based on line working states, then energy efficiency is improved, but the system complexity increases due to monitoring and strategy determination requirements
Solution Approach 1:
The DPU integrates multiple functions into a single device, including power sourcing equipment (PSE) functionality, line state monitoring, and power feeding strategy determination. By making the DPU universal and multi-functional, the patent avoids adding separate monitoring and control devices, thereby improving energy efficiency without significantly increasing system complexity.
3Power
If all subscriber lines are used for power feeding regardless of their working states, then maximum power can be supplied to the DPU, but lines in idle or standby states consume unnecessary energy
Solution Approach 1:
The patent applies different power feeding strategies to different subscriber lines based on their specific working states. Instead of uniform power allocation, each line receives power treatment appropriate to its state (L0, L2.1, L2.2, or L3), ensuring that lines in idle or standby states do not consume unnecessary energy while still allowing lines in active states to contribute maximum power to the DPU.
Data Source
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AI summary
Provided are a reverse power feed processing method and device. The method comprises: by monitoring the states of power sourcing equipment (PSE) of various lines of a downlink of a distributed point unit (DPU), determining an operating state in which each line can be located; monitoring the current operating states of various lines of the downlink, and controlling the current operating states of various lines according to the states of the power sourcing equipment (PSE) of various lines; and determining a power consumption state of the DPU according to the operating states of various lines of the downlink obtained after control, and according to the power consumption state of the DPU, selecting a corresponding preset power feed policy to feed power. The problem that the energy efficiency of a line of a user is not high due to the fact that the power feed condition of the line of the user is not in conformity with the electrical energy consumption condition required for data transmission of the link when reverse power feed is conducted based on a multiuser line is solved, and the fairness of feeding power to the DPU by each line of the user is improved, thereby improving the energy efficiency of the line of the user.