Zero-Power Wireless Communication Dormancy for Energy Harvesting
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Solution Overview
Problem
The performance of energy harvesting in zero-power devices is relatively poor, limiting their coverage and efficiency in wireless communication systems.
Innovation Solution
The zero-power device is placed in a communication dormant state within a designated time-domain resource, allowing it to perform energy harvesting efficiently while avoiding power consumption from continuous signal detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the zero-power device continuously detects communication signals, then communication responsiveness is improved, but energy consumption increases and energy harvesting performance deteriorates
Solution Approach 1:
The patent implements periodic communication wake-up and dormant cycles for the zero-power device. The device alternates between active communication states and dormant energy harvesting states in regular intervals, allowing it to balance signal detection requirements with energy accumulation needs. This periodic operation mode resolves the contradiction by ensuring the device responds to communications at scheduled intervals while spending sufficient time in low-power states to harvest energy from the environment.
2Productivity
If the zero-power device operates in active communication state, then communication efficiency is improved, but energy consumption increases limiting deployment density
Solution Approach 1:
The patent makes the zero-power device dynamically switchable between active and dormant states based on communication requirements and energy availability. The device adapts its operational state in real-time, transitioning to dormant mode when energy is low or communication activity is minimal, and activating when energy suffices or communication is required. This dynamic state management resolves the contradiction by optimizing the balance between communication performance and power consumption.
3Area of stationary object
If the zero-power device performs continuous communication operations, then communication coverage is improved, but energy depletion occurs reducing operational duration
Solution Approach 1:
The patent implements preliminary energy harvesting during dormant periods before communication operations are needed. The zero-power device accumulates energy in advance during low-activity intervals, ensuring sufficient power reserves are available when communication activities require higher power consumption. This preliminary energy preparation resolves the contradiction by ensuring the device can maintain communication coverage without rapid energy depletion.
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 enhances energy harvesting efficiency and extends the communication range of zero-power devices by optimizing their operation within specific time-domain resources.
Implementation Method 1
can support energy harvesting
Data Source
AI summary
A method for wireless communication, a zero-power device, and a communication device are provided. The method for wireless communication includes acquiring, by a zero-power device, a first time-domain resource, where the zero-power device is in a communication dormant state within the first time-domain resource.