Wake-Up Signaling for UE Energy Harvesting and Data Decoding
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Solution Overview
Problem
Wireless communication devices face challenges in efficiently managing energy usage during discontinuous reception cycles, as continuous monitoring is energy-intensive, and existing methods do not effectively optimize between harvesting energy and decoding data within on durations.
Innovation Solution
A method where a wake-up message indicates whether a UE should harvest energy, decode data, or both during an on duration of a discontinuous reception cycle, allowing concurrent or sequential energy harvesting and data decoding based on the message parameters, enabling dynamic energy management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If continuous monitoring is performed during on duration, then data can be decoded without delay, but energy consumption increases
Solution Approach 1:
The system dynamically adjusts the monitoring strategy based on wake-up message indicators. When energy harvesting is indicated, the UE switches to energy harvesting mode instead of continuous monitoring, making the system adaptive to changing conditions and resolving the contradiction between reliable data decoding and energy consumption
Solution Approach 2:
The wake-up message includes indicators that change the operational parameters of the UE. By receiving different indicator values, the UE changes its state between continuous monitoring and energy harvesting, allowing flexible adjustment of the trade-off between data decoding reliability and energy consumption based on current conditions
2Use of energy by moving object
If energy harvesting is performed during on duration, then energy usage is optimized, but data decoding may be delayed or missed
Solution Approach 1:
The system dynamically switches between energy harvesting and monitoring modes based on wake-up message indicators. This dynamic adjustment ensures that energy harvesting is performed only when appropriate, maintaining data decoding reliability while optimizing energy usage efficiency under specific conditions
3Loss of information
If the UE monitors control channel continuously, then no data is missed, but battery life is reduced
Solution Approach 1:
Instead of continuous monitoring, the system uses periodic wake-up messages to trigger monitoring only when necessary. This periodic action pattern reduces unnecessary continuous monitoring, preventing data loss while extending battery life by monitoring only during scheduled intervals
Solution Approach 2:
The wake-up message provides preliminary indication before the on duration, allowing the UE to prepare for monitoring only when data is actually available. This preliminary action prevents unnecessary monitoring and extends battery life while ensuring no data is missed when present
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 optimizes energy usage by allowing UEs to dynamically determine when to harvest energy and decode data, reducing overall power consumption and extending battery life while enabling efficient communication.
Implementation Method 1
harvesting energy from a signal transmitted during the on duration
Data Source
AI summary
Methods, systems, and devices for wireless communications are described. For instance, a wireless device (e.g., abase station, a user equipment (UE)) may transmit a wake-up message including an indicator of whether an on duration of a discontinuous reception cycle is associated with harvesting energy from a signal transmitted during the on duration. The wireless device may transmit the signal during the on duration based on the wake-up message. In some examples, the UE may determine, from the indicator, whether to harvest energy, decode data or both during the on duration. If both harvesting energy and decoding data, the UE may harvest the energy and decode the data concurrently for at least a portion of the on duration. Additionally, or alternatively, the UE may harvest the energy during a first portion of the on duration and may decode data during a second portion of the on duration.