Parallel PSE Ports for High Power Ethernet Delivery
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Solution Overview
Problem
Current Power over Ethernet (PoE) systems face limitations in providing high power to devices via a single Ethernet cable, particularly in supporting a large number of devices requiring super-high power, such as those in wireless local area networks, while ensuring safe and efficient power management and classification.
Innovation Solution
A Power Sourcing Equipment (PSE) system with a detecting and classifying module and power sourcing module that utilizes multiple PSE ports connected in parallel across different Ethernet cable pairs to deliver high power, performing feature detection and power classification to determine and adjust power output, with a register module for overload protection and power allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If multiple PSE ports are connected in parallel to provide high power, then the power output capability is improved, but the device complexity increases
Solution Approach 1:
The patent merges multiple PSE ports (at least two ports from different port groups) in parallel to provide high power to a single PD. This combining approach enables the system to achieve high power output (minimum 140W) by aggregating the power capacity of multiple ports while maintaining a unified power delivery interface through the Ethernet cable.
Solution Approach 2:
The patent implements multi-functionality by enabling PSE ports to serve dual purposes: standard PoE power delivery for normal operations and high-power delivery when connected in parallel. The system can dynamically adapt between different power delivery modes based on the connected device's requirements, making the same hardware infrastructure versatile for both standard and high-power applications.
2Quantity of substance
If power is delivered to multiple devices via a single Ethernet cable, then the quantity of supported devices is improved, but the reliability of power delivery deteriorates
Solution Approach 1:
The patent implements feedback mechanisms through feature detection and power classification processes. The PSE detects the resistance value of the connected PD, determines its power class, and adjusts the power delivery accordingly. This feedback loop ensures that power is delivered safely and reliably to multiple devices by continuously monitoring device characteristics and adapting power levels to match actual device requirements.
Solution Approach 2:
The patent performs preliminary actions by conducting feature detection and power classification before actual power delivery. The system detects resistance values, determines power classes, and establishes appropriate power delivery parameters in advance. This preliminary characterization ensures that when multiple devices are connected, each receives the appropriate power level, preventing overloading and ensuring reliable operation.
Data Source
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Figure 3
AI summary
PSEs are provided. In one aspect, the PSE includes a first port group, a second port group, a second port group and a power sourcing module. The first port group includes a plurality of PSE ports, wherein the PSE ports in the first port group are connected in parallel and connected with a first line pair and a second line pair in the Ethernet cable. The second port group includes a plurality of PSE ports, wherein the PSE ports in the second port group are connected in parallel and connected with a third line pair and a fourth line pair in the Ethernet cable. The detecting and classifying module performs feature detection for a Power Device (PD) connected with the Ethernet cable. The power sourcing module outputs a working voltage from the first port group and outputs the working voltage from the second port group.