Power Sourcing Equipment Power Allotment Adjustment via Event Detection
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Solution Overview
Problem
In Power-over-Ethernet (PoE) systems, lapses in power supply to Powered Devices (PDs) can lead to operational failures and connectivity issues, particularly when one Power Sourcing Equipment (PSE) is unaware of changes in the other PSE's power allocation, resulting in oversupply or undersupply of power to the PD.
Innovation Solution
Implementing a mechanism where two PSEs dynamically share information about their current PoE configurations, allowing one PSE to adjust its power allocations in response to changes in the other PSE, thereby maintaining optimal power supply to the shared PD without manual administrator intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If two PSEs independently manage power allocation to a shared PD without communication, then each PSE can operate autonomously and simplify individual control logic, but power supply stability deteriorates due to oversupply or undersupply scenarios
Solution Approach 1:
The patent implements a feedback mechanism where PSEs exchange power allocation information through transport layer communications. Each PSE monitors the power allocation status of shared PDs and adjusts its power supply based on feedback from the other PSE, ensuring stable power delivery while maintaining autonomous operation.
Solution Approach 2:
The patent introduces an intermediary communication protocol (transport layer protocol) that mediates between the two PSEs. This intermediary layer enables information exchange about power allocations without requiring direct complex coordination, allowing autonomous PSEs to cooperate effectively.
2Measurement precision
If manual administrator intervention is used to monitor and reconfigure PSE power allocations, then power supply accuracy can be maintained through direct control, but system complexity and operational overhead increase significantly
Solution Approach 1:
The patent enables PSEs to perform self-service by automatically exchanging power allocation information and adjusting their own power supplies based on received data. This eliminates the need for manual administrator intervention while maintaining precise power allocation control through automated decision-making algorithms.
Solution Approach 2:
The patent dynamically changes power allocation parameters based on real-time conditions and exchanged information between PSEs. The system automatically adjusts power distribution parameters to maintain accuracy without requiring manual reconfiguration, reducing operational complexity while preserving precision.
3Measurement precision
If PSEs exchange detailed PoE configuration information frequently to maintain synchronization, then power allocation accuracy improves, but network bandwidth consumption and communication overhead increase
Solution Approach 1:
The patent implements periodic exchange of power allocation information between PSEs at predetermined intervals through transport layer communications. This periodic action maintains sufficient synchronization for accurate power allocation while minimizing network bandwidth consumption by avoiding continuous or excessive communication.
Solution Approach 2:
The patent exchanges only the necessary partial information (power allocation status and key configuration parameters) rather than complete PoE configuration data. This selective information exchange maintains power allocation accuracy while reducing communication overhead and network bandwidth consumption.
Data Source
AI summary
A Power-over-Ethernet (POE) powered device (PD) may be coupled to two power sourcing equipments (PSEs), a PSE and an additional PSE. The PSE may exchange a transport layer protocol communications with the additional PSE. The communications comprising a first communication from the PSE to the additional PSE indicative of a PoE configuration of the PSE and a second communication from the additional PSE to the PSE indicative of a PoE configuration of the additional PSE. The PSE may create a power availability table based on the communications. The PSE may detect occurrence of an event comprising at least one of a change in the power availability table or a change in ability of the PSE to provide power to the PD. On occurrence of the event, the PSE may send additional communications to the additional PSE, requesting to adjust its power allotment for the PD.