Radio Link Monitoring With DRX-Based Beam Failure Measurement
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Solution Overview
Problem
Current RLM and BFD procedures in next-generation wireless communication systems need enhancement to support higher data rates and reduce power consumption for low-mobility UEs.
Innovation Solution
Implement relaxed RLM and BFD configurations with adjustable indication and evaluation intervals, defined as integer multiples of normal intervals, based on discontinuous reception (DRX) cycle thresholds, to optimize measurements for low-mobility UEs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If normal RLM and BFD configurations are used with standard indication and evaluation intervals, then measurement reliability is maintained, but power consumption increases and measurement efficiency decreases
Solution Approach 1:
The patent applies dynamics by making the indication and evaluation intervals adjustable based on DRX cycle length. The system transitions from static standard intervals to dynamic intervals that adapt to operational conditions (short DRX cycles trigger relaxed configurations with longer intervals), thereby reducing power consumption while maintaining reliability through condition-based adaptation
Solution Approach 2:
The patent changes the parameter of indication and evaluation intervals based on DRX cycle characteristics. When DRX cycle length is shorter than a threshold, the system applies relaxed configurations with modified interval parameters (integer multiples of normal intervals), directly addressing the power consumption issue while preserving measurement reliability through controlled parameter adjustment
2Speed
If measurement frequency is increased to improve detection speed, then response time decreases, but power consumption increases
Solution Approach 1:
The patent implements periodic action through DRX-based measurement scheduling. Instead of continuous or fixed-frequency measurements, the system performs measurements periodically based on DRX cycle characteristics. The relaxed configurations apply longer indication and evaluation intervals during specific periodic windows, reducing overall measurement frequency and power consumption while maintaining adequate detection speed through strategic periodic monitoring
3Use of energy by moving object
If relaxed RLM and BFD configurations are applied with extended intervals, then power consumption decreases, but measurement frequency reduces
Solution Approach 1:
The system dynamically adjusts measurement frequency based on operational conditions. When short DRX cycles are detected, the system applies relaxed configurations with extended intervals, accepting lower measurement frequency in exchange for significant power savings. The dynamic adaptation ensures that measurement frequency is optimized rather than maximized, balancing productivity with energy efficiency
Data Source
AI summary
The present disclosure relates to a 5G communication system or a 6G communication system for supporting higher data rates beyond a 4G communication system such as long term evolution (LTE). The present disclosure provides method and apparatus for RLM and BFD measurements in next generation wireless communication system.