Zero-Power Wireless Communication With Dormant Wake-Up Scheduling
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Solution Overview
Problem
The performance of energy harvesting in zero-power devices is poor due to inefficient energy harvesting and unnecessary power consumption from continuous blind detection of signals.
Innovation Solution
The zero-power device is placed in a communication dormant state within a designated time-domain resource, allowing efficient energy harvesting without power consumption from continuous signal detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the zero-power device continuously performs blind detection of signals, then it can detect communication signals in time, but it consumes unnecessary power and reduces energy harvesting efficiency
Solution Approach 1:
The patent implements periodic wake-up detection where the zero-power device alternates between dormant state and active detection state. The device wakes up at predetermined intervals to detect wake-up signals, then returns to dormant state for energy harvesting. This periodic action maintains reliable signal detection capability while dramatically reducing power consumption compared to continuous blind detection.
2Reliability
If the zero-power device remains in active communication state, then it can detect signals continuously, but it cannot harvest energy efficiently
Solution Approach 1:
The patent makes the device state dynamic by transitioning between dormant and active states based on communication needs. The device dynamically adjusts its operational mode: dormant state for energy harvesting, active state for signal detection and communication. This dynamic state management resolves the contradiction by allowing the device to optimize for energy harvesting during dormant periods while maintaining communication reliability through periodic wake-up detection.
Data Source
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AI summary
Embodiments of the present disclosure provide a method for wireless communication and a device. A zero-power device is in a communication dormant state within a first time-domain resource, such that the zero-power device can perform energy harvesting more efficiently within the first time-domain resource, while avoiding power consumption that would otherwise be caused by the zero-power device performing, within the first time-domain resource, continuous blind detection of signals that may be sent to the zero-power device by a device communicating with the zero-power device. 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.