Wake-Up Signal RRM Measurement Relaxation for Beam Reliability
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Solution Overview
Problem
Incorrect activation of relaxed measurement in wireless communication systems leads to cell re-selection delay and radio link or beam failure, particularly in RedCap devices with dynamic coverage and beam-based communication.
Innovation Solution
Implement a wake-up signal-based system to dynamically adjust RRM relaxation decisions by continuously monitoring criteria such as signal strength and mobility, using a wake-up receiver to evaluate and determine whether relaxed measurement is allowed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If relaxed measurement is activated to reduce measurement frequency, then power consumption is reduced, but cell re-selection delay and radio link failure occur
Solution Approach 1:
The system dynamically adjusts measurement relaxation status based on real-time signal quality monitoring. The relaxed measurement state is not fixed but can be activated or deactivated according to changing radio conditions, allowing the system to adapt between power saving mode and reliable measurement mode as needed
Solution Approach 2:
The system implements feedback mechanisms where the terminal device monitors signal quality metrics (such as reference signal received power and signal-to-interference-plus-noise ratio) and uses this information to determine whether relaxed measurement should be activated or deactivated, creating a closed-loop control system that prevents unreliable measurements while saving power
2Use of energy by moving object
If relaxed measurement is activated to reduce measurement frequency, then power consumption is reduced, but beam failure occurs
Solution Approach 1:
The system performs preliminary monitoring of signal quality criteria before activating relaxed measurement. By evaluating whether certain signal conditions are met in advance, the system ensures that relaxed measurement is only activated when beam reliability is sufficient, preventing beam failure while still enabling power saving mode when conditions are stable
Data Source
AI summary
Disclosed is a method comprising evaluating one or more criteria for relaxed measurement on one or more radio cells, wherein at least a subset of the one or more criteria are associated with at least one signal comprising at least one of: a wake-up signal, a wake-up signal beacon, and a signal measured by a wake-up receiver; and determining, based on the evaluation, whether the relaxed measurement is allowed.