Access Point Power Negotiation for Wireless Energy Harvesting
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Solution Overview
Problem
Access points in wireless networks face challenges in determining the optimal amount of power to transmit for power harvesting devices, leading to either insufficient power for device functionality or wastage of resources.
Innovation Solution
The access point negotiates power transmissions with devices by receiving messages indicating the amount of power harvested and needed, allowing it to calculate and transmit the required power, adjusting subsequent transmissions based on feedback from devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the access point transmits more power for power harvesting devices, then the devices receive sufficient power for functionality, but computing resources and electrical power are wasted
Solution Approach 1:
The access point implements a feedback mechanism where devices report their harvested power levels and power needs through uplink messages. The access point uses this feedback information to dynamically adjust the power transmission level, transmitting only the necessary amount of power required by each device rather than using a fixed high power level, thus avoiding energy waste while ensuring device functionality.
Solution Approach 2:
The system transitions from a static power transmission approach to a dynamic one where the access point continuously adjusts the power transmission level based on real-time device needs. The access point modifies transmission power in response to changing device power requirements and harvested energy levels, optimizing the balance between providing sufficient power and minimizing energy waste.
2Loss of energy
If the access point transmits less power to conserve resources, then electrical power and computing resources are conserved, but devices do not receive sufficient power for functionality
Solution Approach 1:
The access point relies on feedback from devices about their power needs and harvested energy levels to determine the minimum necessary transmission power. This feedback loop ensures that the access point transmits the precise amount of power required - no more, no less - thereby conserving energy while maintaining device functionality.
Solution Approach 2:
The access point changes the power transmission parameter dynamically based on device-specific conditions. By adjusting the transmission power parameter in response to device feedback about power needs and harvesting efficiency, the system optimizes energy conservation while ensuring each device receives adequate power for its operational requirements.
3Ease of operation
If the access point uses fixed power transmission without negotiation, then the system is simple to operate, but power transmission efficiency is suboptimal
Solution Approach 1:
Devices autonomously determine their own power needs and communicate this information to the access point. Each device self-assesses its power requirements and harvested energy levels, then requests appropriate power levels without requiring complex centralized control or manual configuration, maintaining operational simplicity while improving efficiency.
Solution Approach 2:
Devices perform preliminary assessments of their power needs and communicate these requirements to the access point before power transmission begins. This preliminary action allows the access point to configure optimal transmission parameters in advance, improving power transmission efficiency without adding operational complexity during actual power delivery.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach ensures that devices receive the necessary power while conserving computing resources and electrical power, optimizing power transmission efficiency.
Implementation Method 1
Some devices may harvest electrical energy or power from the wireless signals transmitted by the access points
Implementation Method 2
Some devices may harvest electrical energy or power from the wireless signals transmitted by the access points
Data Source
AI summary
The present disclosure describes systems and methods for negotiating power harvesting. An access point includes a memory and a processor communicatively coupled to the memory. The processor receives, from a first device, a first message indicating a first amount of power harvested by the first device and a second amount of power requested by the first device and determines, based on the first amount of power, that transmitting a third amount of power will cause the first device to receive the second amount of power. The processor also transmits the third amount of power.