PoE Power Slot Scheduling for Wireless AP Charging Demand
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Wireless access points (APs) cannot request additional Power over Ethernet (PoE) from the switch due to the fixed power allocation, limiting their ability to support wireless charging.
Innovation Solution
A PoE system with a network device that includes a controller and PoE manager to dynamically schedule power allocation among devices, allowing devices to request and manage additional power through a power allocation schedule, using a scheduling algorithm to adjust power supply based on demand.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If fixed power allocation is used for PoE devices, then power management is simple and stable, but additional power cannot be provided when needed (e.g., for wireless charging)
Solution Approach 1:
The patent implements dynamic power allocation by introducing a power scheduling mechanism that allows the access point to request additional power from the switch when needed. The system transitions from static fixed power allocation to dynamic power allocation based on real-time wireless charging demands, enabling the network device to adjust power delivery dynamically while maintaining system stability through structured communication protocols
Solution Approach 2:
The patent applies preliminary action by having the access point send a power request message to the switch in advance before additional power is needed. The switch receives and processes the request, determines power availability, and prepares the power allocation before the actual wireless charging operation begins, ensuring power is ready when required without causing system instability
2Use of energy by moving object
If additional power is always available to the AP, then wireless charging can be fully supported, but power waste occurs when additional power is not needed
Solution Approach 1:
The patent implements feedback mechanisms where the access point monitors wireless charging power demands and communicates power requests to the switch only when additional power is needed. The switch responds with power availability status, creating a closed-loop feedback system that adjusts power allocation based on actual demand, thereby improving energy efficiency while maintaining reliable power supply through on-demand allocation
Solution Approach 2:
The system enables self-service power management where the access point autonomously determines when additional power is needed for wireless charging and independently sends power requests to the switch. The switch autonomously evaluates power availability and makes allocation decisions without requiring manual intervention, allowing the system to efficiently manage power resources based on actual operational needs
Data Source
AI summary
In one embodiment, a method includes: receiving a request from a powered device to schedule one or more power slots for delivery of additional power from power sourcing equipment to the powered device, the request including a requested amount of additional power, a requested time, and a requested duration, the additional power being an amount of power above a base level of power being supplied to the powered device; determining an availability of the amount of additional power at the requested time and for the requested duration; transmitting, in response to determining that the amount of additional power at the requested time and for the requested duration is available, a response indicating the availability; receiving at the requested time a confirmation request for the additional power from the powered device; and enabling the additional power to be supplied to the powered device in response to the confirmation request.