Terminal RRM Measurement Using Short-Term and Long-Term Beam Methods
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Solution Overview
Problem
Current wireless communication systems face challenges in performing effective Radio Resource Management (RRM) measurements, particularly in systems using multiple analog beams, where existing methods struggle to efficiently manage channel states and support handovers.
Innovation Solution
A method and device for performing RRM measurements using Beam Reference Signal (BRS) resources, which include short-term and long-term measurement methods to calculate channel states per analog beam and average channel states, allowing for triggered reporting to base stations through various signaling layers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple analog beams are used for signal transmission, then communication capacity and coverage are improved, but RRM measurement complexity and difficulty increase
Solution Approach 1:
The patent segments RRM measurement into two distinct types: Short-Term RRM measurement for instantaneous channel state per analog beam, and Long-Term RRM measurement for average channel state across multiple analog beams. This segmentation allows the system to handle different measurement requirements separately, reducing overall measurement complexity while maintaining high communication capacity through multiple beams.
Solution Approach 2:
The patent introduces triggered reporting mechanisms where RRM measurement results are reported to the base station only when specific triggering conditions are met. This preliminary filtering action reduces the volume of measurement data that needs to be processed and transmitted, thereby reducing measurement complexity and difficulty while preserving the benefits of multiple analog beams.
2Measurement precision
If instantaneous channel state per analog beam is measured (Short-Term RRM), then beam management precision is improved, but measurement overhead and resource consumption increase
Solution Approach 1:
The patent employs triggered reporting for Short-Term RRM measurement results, where measurements are reported only when triggering conditions are satisfied. This preliminary filtering reduces the quantity of measurement reports transmitted, thereby reducing resource consumption while maintaining high measurement precision when needed.
Solution Approach 2:
The patent implements a two-layer measurement approach where Long-Term RRM measurement provides average channel state information for all analog beams, and Short-Term RRM measurement provides detailed instantaneous information only when triggered. This partial action approach reduces overall resource consumption while maintaining measurement precision for critical beam management decisions.
3Reliability
If average channel state for multiple analog beams is measured (Long-Term RRM), then handover decision reliability is improved, but measurement time and latency increase
Solution Approach 1:
The patent performs Long-Term RRM measurement continuously in the background to maintain up-to-date average channel state information for multiple analog beams. This preliminary action ensures that when handover decisions are needed, reliable measurement data is already available, reducing actual handover decision time while maintaining high reliability.
Solution Approach 2:
The patent implements continuous Long-Term RRM measurement that operates continuously to maintain current average channel state information. This continuous measurement approach ensures that measurement data is always fresh and reliable for handover decisions, reducing latency while maintaining high decision reliability.
4Productivity
If triggered reporting mechanism is implemented, then signaling efficiency is improved, but system complexity and control overhead increase
Solution Approach 1:
The patent implements a universal triggered reporting mechanism that handles both Short-Term and Long-Term RRM measurement results through the same triggering conditions and reporting procedures. This multi-functionality approach improves signaling efficiency by using a single reporting framework while managing complexity through standardized control logic that applies to both measurement types.
Data Source
AI summary
Disclosed are a method whereby a terminal measures radio resource management (RRM) in a wireless communication system, in which multiple analogue beams are applied, and devices for supporting same. Disclosed more particularly are: a method whereby a terminal measures RRM according to at least one RRM measurement method of a short-term (ST) RRM measurement method for measuring an instantaneous channel state for each analogue beam and a long-term (LT) RRM measurement method for measuring an average channel state for multiple analogue beams; and devices for supporting same.