Energy-Aware Terminal Scheduling for RF-Harvested Processing
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Solution Overview
Problem
Semi-passive zero-power terminal devices face challenges in obtaining stable energy for processing operations, making it difficult to determine which processing processes to prioritize or execute when energy is limited.
Innovation Solution
The terminal device determines whether it can complete processing processes based on its energy harvesting state and prioritizes processes according to their priority levels, ensuring that high-priority processes are executed first when energy is limited.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the terminal device executes multiple processing processes, then the functionality and productivity are improved, but the energy consumption increases and reliability deteriorates due to unstable energy supply
Solution Approach 1:
The terminal device dynamically adjusts its processing schedule based on real-time energy harvesting state. The processor selectively executes processing processes by comparing energy requirements with available harvested energy, transitioning between different operational states (executing vs. skipping processes) to maintain reliability while maximizing productivity under varying energy conditions
Solution Approach 2:
The system changes the execution parameter of processing processes based on energy harvesting state. When energy is sufficient, more processes are executed; when energy is limited, the system adjusts by skipping lower-priority processes, thereby adapting the processing workload to match available energy resources and maintaining operational reliability
2Use of energy by moving object
If the terminal device harvests radio frequency energy continuously, then the energy availability is improved, but the energy stability deteriorates due to variable harvesting rates
Solution Approach 1:
The terminal device performs preliminary assessment of energy harvesting state before committing to execute processing processes. By evaluating the current energy level and harvesting rate in advance, the system can predict whether sufficient energy will be available and adjust its processing schedule accordingly, preventing energy depletion and maintaining stable operation despite variable harvesting conditions
Solution Approach 2:
The terminal device autonomously monitors its own energy harvesting state and self-regulates its processing execution without external control. The processor independently decides which processes to execute or skip based on real-time energy conditions, enabling the device to adapt to variable energy availability and maintain operational stability through self-service energy management
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 critical processes are completed reliably even with limited energy, improving the terminal device's operational reliability and efficiency.
Implementation Method 1
a semi-passive zero-power terminal can harvest radio waves by a Radio Frequency (RF) energy harvesting module
Data Source
AI summary
A wireless communication method, and a terminal device are provided. The wireless communication method includes operations as follows. Whether the terminal device is able to complete at least one processing process is determined according to an energy harvesting state of the terminal device. When it is determined that the terminal device is unable to complete the at least one processing process, at least one target processing process is determined according to a priority of the at least one processing process.