DRX Beam Management for FR2 Failure Detection and Recovery
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Solution Overview
Problem
The challenges of beam management in FR2 due to increased pathloss, beam blockage, and high power consumption in 5G NR systems operating in Discontinuous Reception (DRX) mode are not adequately addressed, leading to resource overhead, latency, and thermal issues.
Innovation Solution
Enhancements in beam management techniques for UE operating in DRX mode, including beam failure detection and recovery, beam measurement and reporting, and optimized beamforming strategies to reduce resource overhead and latency while managing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If beam management operations are performed frequently to maintain communication reliability in FR2, then beam management efficiency improves, but power consumption increases
Solution Approach 1:
The patent implements periodic beam management operations synchronized with DRX cycles. Beam failure detection reference signals are transmitted at specific intervals during active DRX periods, and beam management operations are performed periodically rather than continuously. This periodic approach maintains communication reliability by regularly monitoring beam conditions while reducing power consumption by operating only during scheduled intervals rather than continuously.
Solution Approach 2:
The patent dynamically adjusts beam management operations based on DRX state transitions. During active DRX periods, full beam management operations are performed to maintain reliability. During sleep periods, operations are reduced or suspended to conserve power. The system adapts beam management intensity and frequency based on current operational requirements and channel conditions, optimizing the balance between reliability and power consumption.
2Loss of time
If beam management operations are performed continuously to reduce latency, then communication latency decreases, but resource overhead increases
Solution Approach 1:
Beam management operations are performed periodically during active DRX periods rather than continuously. Beam failure detection reference signals are transmitted at scheduled intervals, and beam recovery procedures are triggered only when needed. This periodic operation reduces resource overhead by limiting beam management activities to necessary time windows while maintaining acceptable latency through timely detection and recovery mechanisms.
Solution Approach 2:
The patent configures beam failure detection reference signals in advance during active DRX periods, preparing the system for potential beam failures before they occur. Recovery reference signals are pre-configured and ready for immediate transmission when beam failure is detected. This preliminary preparation reduces latency by having detection and recovery mechanisms ready ahead of time while avoiding continuous operation that would waste resources.
3Use of energy by moving object
If DRX cycle length is increased to reduce power consumption, then power consumption decreases, but beam management effectiveness deteriorates
Solution Approach 1:
The patent performs beam management operations periodically within active DRX periods, ensuring that beam conditions are monitored regularly even when DRX cycles are extended. Multiple beam failure detection reference signals are transmitted during each active period to maintain detection accuracy. This periodic monitoring maintains beam management effectiveness while allowing longer overall DRX cycles that reduce average power consumption.
Solution Approach 2:
The patent maintains continuous beam management capability during active DRX periods through multiple reference signal transmissions and ongoing monitoring. Beam failure detection and recovery procedures are kept ready and can be executed immediately when needed, ensuring continuous effectiveness during active periods. This continuity during active times compensates for the reduced overall operation time in longer DRX cycles, maintaining effectiveness while reducing average power consumption.
Data Source
AI summary
Techniques discussed herein can facilitate one or more enhancements to beam management for a User Equipment (UE) operating in a Discontinuous Reception (DRX) mode. A first set of techniques relates to enhancements to transmission of Scheduling Request(s) (SR(s)) by UEs operating in DRX mode. A second set of techniques relates to enhancements to beam failure detection and recovery by UEs operating in DRX mode. A third set of techniques relates to enhancements to beam measurement and reporting by UEs operating in DRX mode. Various embodiments can employ one or more techniques of the first set of techniques, the second set of techniques, and/or the third set of techniques.