Power Distribution Engine for PoE Switches
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Solution Overview
Problem
Power over Ethernet (PoE) enabled switch systems often face power limitations, leading to reduced availability of powered devices during usage spikes, resulting in increased costs, data loss, and technical support issues due to the need to prioritize connected devices.
Innovation Solution
A power distribution system with a chassis and ports configured to communicate with both powering and powered devices, featuring a power distribution engine that determines power insufficiency and requests power from connected devices to ensure sufficient power is provided to all devices, utilizing trunk ports to share power between devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If power priority assignment is used to ensure power availability for critical devices, then power reliability for high-priority devices is improved, but device availability for low-priority devices deteriorates
Solution Approach 1:
The patent merges multiple powering devices into a unified power pool that serves all powered devices collectively. Instead of assigning fixed power priorities to individual devices, the system combines available power from all powering devices and dynamically allocates it based on real-time needs, allowing all devices to remain available while sharing the total power capacity equitably.
Solution Approach 2:
The system implements dynamic power allocation where the amount of power provided to each powered device adjusts automatically based on current power availability and demand conditions. This dynamic approach replaces static priority assignments, enabling the system to adapt to changing conditions and maintain device availability while ensuring power reliability for all devices.
2Ease of operation
If power is allocated based on device priority, then power distribution control is improved, but system cost increases due to device shutdowns and data loss
Solution Approach 1:
The system enables powered devices to request power autonomously based on their operational needs, and powering devices automatically respond by providing available power from the shared pool. This self-service mechanism eliminates the need for manual priority assignments and complex control interventions, reducing operational complexity while preventing power-related failures and associated costs.
Solution Approach 2:
The patent implements a feedback mechanism where powered devices communicate their power needs to the powering devices, which then allocate power from the available pool accordingly. This continuous feedback loop enables automatic power distribution control that adapts to changing conditions without manual intervention, maintaining both ease of operation and cost-effectiveness by preventing device shutdowns and data loss.
3Device complexity
If a single power source is used to power all devices, then system complexity is reduced, but power capacity is insufficient during usage spikes
Solution Approach 1:
The patent makes the power distribution system multi-functional by enabling powering devices to serve dual purposes: powering their own operations and providing excess power to other powered devices in the network. This universal approach allows the same infrastructure to handle both self-powering and power-sharing functions, effectively increasing total power capacity without adding separate dedicated power sources for each device.
Solution Approach 2:
The system segments the power distribution function across multiple powering devices rather than relying on a single centralized power source. Each powering device independently manages and contributes its available power to the shared pool, creating a distributed power architecture that increases total power capacity while maintaining or reducing overall system complexity through modular, independent units.
Data Source
AI summary
A power distribution system includes a chassis with a plurality of ports that include a first port configured to communicate with powering devices and a second port configured to communicate with powered devices. A power distribution engine in the chassis is coupled to each of the plurality of ports. The power distribution engine determines that power available to the power distribution engine is insufficient to power a first powered device that is coupled to the first port, requests power from a first powering device that is coupled to the second port, and provides power that is received through the second port from the first powering device to the first powered device through the first port. In an embodiment, the first powered device and the second powered device are switch IHSs, the first port is configured as a trunk port, and the second port is configured as an access port.