Inline Power Management for Powered Devices
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Solution Overview
Problem
Existing Inline Power management systems, as defined by the IEEE 802.3af standard, are inadequate in handling scenarios where a Powered Device (PD) needs to power additional devices without intermediate device interaction, and fail to address dynamic changes in power requirements between connected devices.
Innovation Solution
A method and apparatus that allow a network device acting as Power Sourcing Equipment (PSE) to manage Inline Power relationships among multiple PDs, enabling direct power negotiation and adjustment without intermediate device permission, using conventional IEEE 802.3af standard protocols and additional configurations to ensure efficient power allocation and utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a Powered Device (PD) needs to power additional devices directly, then power allocation flexibility is improved, but existing Inline Power management systems lack the capability to handle such scenarios without intermediate device interaction
Solution Approach 1:
The PD is enabled to autonomously manage power allocation to downstream devices without requiring continuous intermediate device permission. The system allows the PD to self-regulate power distribution based on detected power requirements, eliminating the need for complex intermediate management while maintaining flexibility in power allocation.
Solution Approach 2:
The system performs preliminary power detection and classification before actual power delivery. By pre-determining power requirements and allocating power budgets in advance, the system enables flexible power distribution to multiple devices without requiring complex real-time intermediate negotiations, thus improving adaptability while managing complexity.
2Productivity
If dynamic power requirements between connected devices are addressed, then power management efficiency is improved, but existing standards fail to provide mechanisms for such dynamic adjustment
Solution Approach 1:
The system implements continuous feedback mechanisms where PDs monitor their own power consumption and the power requirements of connected devices. This feedback loop enables dynamic power adjustment and real-time optimization of power distribution, improving management efficiency while maintaining adaptability to changing conditions.
Solution Approach 2:
The power management system transitions from static power allocation to dynamic adjustment capabilities. The system allows real-time modification of power distribution based on detected changes in device requirements, enabling efficient response to dynamic conditions while remaining compliant with evolving standard requirements through configurable power classes and budgets.
3Ease of operation
If multiple PDs are powered directly by a PSE without intermediate devices, then power allocation control is improved, but the system must manage complex power relationships among multiple devices
Solution Approach 1:
The system segments power management into distinct functional layers: PSE performs high-level power budget allocation, while individual PDs handle their own power consumption monitoring and downstream power distribution. This segmentation simplifies the overall control mechanism by dividing complex power relationship management into manageable, independent functions at each device level.
Solution Approach 2:
The system uses power classification and budget allocation as intermediary mechanisms between PSE and multiple PDs. By establishing intermediate power budgets and classification levels, the system simplifies the management of complex power relationships, allowing the PSE to maintain simplified control while enabling flexible power distribution to multiple downstream devices.
Data Source
AI summary
A method and apparatus for managing an Inline Power relationship between and among a first network device acting as power sourcing equipment (PSE) to provide Inline Power to a second Powered Device (PD) and a third device. In one aspect of the invention, the powered device(s) and the third device are powered (at least in part) by the PSE using inline power from at least one port (which may include more than one PSE) and they are powered over one or more sets of cables.