Beam Management Event Configuration for 5G Overhead Reduction
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Solution Overview
Problem
Current 5G wireless communication systems face inefficiencies in beam management, particularly in configuring and reporting channel state information reference signals (CSI-RS), leading to undue overhead for user equipment (UE) in measuring and reporting multiple beams, which can impact network performance and resource management.
Innovation Solution
A method and apparatus for managing beams in wireless communications that involve generating and transmitting a beam management event configuration to indicate specific beams for measurement, allowing UE to report trigger conditions and enabling the network to adjust beam configurations based on signal parameters, thereby reducing overhead and improving resource utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the network configures all possible CSI-RS resources for a UE and activates one based on layer 1 reporting, then beamforming performance is improved, but overhead on the UE increases
Solution Approach 1:
The patent segments the beam management process into two distinct phases: an initial beam selection phase where the UE measures all CSI-RS resources and reports layer 1 measurements, followed by a refined beamforming phase where only the selected beam is activated. This segmentation allows comprehensive beam evaluation while reducing subsequent overhead.
Solution Approach 2:
The patent performs preliminary beam selection through layer 1 reporting before final beam activation. The UE measures and reports measurements for all CSI-RS resources in advance, allowing the network to pre-select the best beam before committing to full beamforming configuration, thereby reducing later overhead.
2Reliability
If multiple transmission/reception points transmit multiple CSI-RS at different beamforming configurations, then coverage and reliability are improved, but overhead at the UE increases
Solution Approach 1:
The patent segments multi-TRP beam management into independent measurement phases for each TRP, where the UE performs layer 1 reporting for each transmission point separately. This allows comprehensive coverage evaluation across multiple TRPs while organizing measurements in a structured manner that reduces overall overhead.
Solution Approach 2:
The patent implements feedback mechanisms where the UE reports layer 1 measurements for each TRP and beam configuration, allowing the network to receive quality metrics and make informed decisions about which beams to activate, thereby managing overhead efficiently while maintaining reliability.
3Measurement precision
If the UE receives and measures all CSI-RS for each configuration, then beam selection accuracy is improved, but processing time and complexity increase
Solution Approach 1:
The patent performs preliminary measurements of all CSI-RS resources during an initial phase, allowing the UE to evaluate all beam options before final selection. This preliminary action ensures accurate beam selection while confining the measurement burden to a dedicated time period rather than continuous processing.
Solution Approach 2:
The patent structures beam measurement and reporting as periodic operations, where the UE measures and reports layer 1 information at specified intervals rather than continuously. This periodic approach maintains measurement precision while managing processing time through structured, time-bound measurement cycles.
Data Source
AI summary
Aspects of the present disclosure describe managing beams in wireless communications. A beam management event configuration indicating a type of at least one beam to measure in determining occurrence of a trigger condition for a beam management event can be received. A parameter of a signal received from one or more nodes can be measured, where the signal corresponds to the type of the at least one beam. The occurrence of the trigger condition for the beam management event can be determined based on the parameter of the signal. An indication of the occurrence of the trigger condition can be reported to the one or more nodes or a different node.