Wake-Up Radio Measurement Offloading for Low-Latency Power Saving
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Solution Overview
Problem
Existing communication technologies face challenges in efficiently managing power consumption and latency in low-power wake-up signals and receivers, particularly in scenarios requiring both low latency and extended battery life, such as fire detection systems, due to the inefficiencies in measurement offloading procedures for low-power wake-up receivers.
Innovation Solution
A method and apparatus for terminal devices to store and evaluate conditions for offloading measurements from a main radio to a low-power wake-up radio based on state transitions, allowing for efficient power management by activating the low-power wake-up receiver when specific conditions are met, thereby reducing power consumption and latency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If measurement offloading is applied from main radio to low-power wake-up radio, then power consumption is reduced, but measurement latency increases
Solution Approach 1:
The terminal device performs measurements using the main radio before transitioning to the low-power wake-up radio. By completing critical measurements in advance while the main radio is still operational, the system prepares measurement data ahead of time, reducing the latency impact when switching to the low-power mode for continued measurements.
2Duration of action of stationary object
If low-power wake-up radio is activated based on predefined conditions, then battery life is extended, but response time to critical measurements increases
Solution Approach 1:
The system dynamically switches between main radio and low-power wake-up radio based on real-time measurement conditions and predefined thresholds. When measurements indicate stable conditions, the system transitions to low-power mode to extend battery life. When critical changes are detected, the system can quickly switch back to main radio mode to maintain responsive measurements, thus adapting battery life extension to actual network conditions.
3Measurement precision
If measurement conditions are evaluated continuously, then measurement accuracy is improved, but processing energy consumption increases
Solution Approach 1:
Instead of continuous evaluation, the terminal device performs measurement condition evaluations periodically or at specific trigger points (such as when entering idle mode or when predefined conditions are met). This periodic approach maintains sufficient measurement accuracy for determining when to switch radios while significantly reducing processing energy consumption compared to continuous monitoring and evaluation.
Data Source
AI summary
Embodiments of the present disclosure relate to a solution for measurement offloading. In one aspect, the terminal device stores system information comprising at least one condition for applying measurement offloading from a first type of radio to a second type of radio. Based on the system information, the terminal device evaluates, based on at least one measurement performed in a first state, whether the at least one condition is satisfied. Based on determining that the at least one condition is satisfied, the terminal device applies the measurement offloading based on a state transition from the first state to a second state. Therefore, the power consumption of the terminal device is reduced.