Wireless Power Signal Timing Using Terminal Harvesting Feedback
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Solution Overview
Problem
In wireless communication systems, terminals with varying power requirements waste resources when network devices send wireless power supply signals for a predefined conservative duration, as terminals with lower power needs can obtain enough power in less time, leading to unnecessary resource utilization and potential interference.
Innovation Solution
The terminal sends a wireless power supply parameter, including power harvesting efficiency, speed, or signal strength, to the network device, allowing it to adjust the sending duration of the wireless power supply signal based on the terminal's specific needs, thereby optimizing resource utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conservative predefined sending duration is used for wireless power supply signals, then all terminals can obtain sufficient power, but resources are wasted when terminals with lower power requirements receive more power than needed
Solution Approach 1:
The patent changes the parameter of sending duration from a fixed conservative value to a dynamically adjusted value based on terminal-specific parameters (power harvesting efficiency, power requirement, distance from network device). This allows the sending duration to be optimized for each terminal, preventing resource waste while ensuring sufficient power delivery.
Solution Approach 2:
The patent introduces feedback mechanisms where terminals report their power harvesting efficiency and power requirements to the network device. The network device uses this feedback information to calculate and adjust the optimal sending duration, creating a closed-loop system that balances reliability and resource efficiency.
2Reliability
If a conservative predefined sending duration is used for wireless power supply signals, then power supply reliability is ensured, but resource utilization rate decreases
Solution Approach 1:
The sending duration parameter is transformed from a static conservative value to a dynamic value that adapts to each terminal's characteristics. By calculating optimal duration based on power harvesting efficiency, power requirements, and distance, the system achieves both high reliability and improved resource utilization.
Solution Approach 2:
The patent makes the sending duration dynamic rather than static. The network device continuously adjusts the duration based on real-time terminal parameters, allowing the system to respond to changing conditions and optimize resource allocation across multiple terminals.
3Reliability
If wireless power supply signals are sent for the full conservative duration to all terminals, then all terminals receive sufficient power, but interference increases due to unnecessary signal transmission
Solution Approach 1:
The patent extracts the unnecessary portion of the power supply signal transmission. By calculating the precise duration needed for each terminal based on its power harvesting characteristics, the system removes excess transmission time that would otherwise create interference, while maintaining sufficient power delivery.
4Productivity
If individualized power supply duration is implemented based on terminal parameters, then resource utilization improves, but system complexity increases
Solution Approach 1:
The patent applies preliminary action by having terminals pre-report their power harvesting efficiency and power requirements before the actual power transfer. The network device pre-calculates the optimal sending duration based on these advance reports, simplifying the real-time control complexity while maintaining high resource utilization.
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 wireless power supply signals are sent for the minimum necessary duration, reducing resource waste and minimizing interference, while ensuring terminals receive sufficient power for operation.
Implementation Method 1
a terminal (e.g. a zero-power terminal) usually needs to obtain power based on a wireless power supply signal sent by a network device
Data Source
AI summary
Provided are a communication method, a terminal and a network device. In the communication method, a terminal sends a wireless power supply parameter, where the wireless power supply parameter includes one or more of the following parameters: power harvesting efficiency of the terminal, a power harvesting speed of the terminal, harvesting time required by the terminal for acquiring a preset power, or a signal strength of a signal received by the terminal.