NR RRM Beam Measurement Using Selective Rx Beams
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Solution Overview
Problem
In 5G NR networks, beam sweeping procedures for user equipment (UE) can result in inefficient resource consumption and power usage due to sub-optimal receive (Rx) beams, leading to reduced throughput and increased power consumption, as some Rx beams may be unusable due to blockage or orientation issues.
Innovation Solution
The UE autonomously adjusts the number of Rx beams and synchronization signal block (SSB) measurement timing configurations (SMTCs) based on quasi-co-located (QCLed) resources between serving and associated base stations, prioritizing high-quality beams for measurement, thereby optimizing resource usage and reducing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If beam sweeping procedures use all available Rx beams for RRM measurements, then measurement coverage is improved, but power consumption increases and resource efficiency decreases
Solution Approach 1:
The patent segments the set of available Rx beams into multiple subsets, where each subset contains a portion of the total beams. The UE performs RRM measurements on multiple subsets sequentially rather than all beams simultaneously, reducing peak power consumption while maintaining overall measurement coverage across all beams over time.
Solution Approach 2:
The patent implements periodic beam sweeping where the UE cycles through different subsets of Rx beams in periodic intervals. Each subset is measured during specific time windows, and the process repeats with different subsets in subsequent periods, ensuring comprehensive coverage while distributing power consumption over time.
2Measurement precision
If beam sweeping procedures use all available Rx beams for RRM measurements, then measurement coverage is improved, but resource efficiency deteriorates
Solution Approach 1:
The patent divides the beam measurement process into segments where different subsets of Rx beams are measured in different time windows. This segmentation allows the network to allocate resources more efficiently by knowing which subset is being measured at any given time, improving resource utilization while maintaining complete measurement coverage.
Solution Approach 2:
The patent introduces dynamic configuration of beam subsets and measurement timing, where the network can adaptively adjust which subsets are measured and when, based on current network conditions and UE requirements. This dynamic approach optimizes resource efficiency by avoiding measurements when not needed while ensuring coverage is maintained.
3Use of energy by moving object
If a subset of Rx beams is used for RRM measurements, then power consumption is reduced and resource efficiency is improved, but measurement coverage may be compromised
Solution Approach 1:
The patent ensures complete measurement coverage by periodically cycling through multiple subsets of Rx beams over time. Each subset is measured during its designated time window, and the periodic repetition of the process with different subsets guarantees that all beams are eventually measured, maintaining comprehensive coverage while reducing instantaneous power consumption.
Solution Approach 2:
The patent uses preliminary actions such as beam failure detection and recovery mechanisms where the network can identify when a subset measurement failed and schedule re-measurement of that subset. This preliminary detection and corrective action ensures that measurement coverage is maintained even when using reduced subsets for power efficiency.
Data Source
AI summary
Techniques discussed herein can facilitate enhanced radio resource management measurements for wireless technology including New Radio (NR). One example aspect is a baseband processor including one or more processors. The one or more processors are configured to receive a measurement link information. From the measurement link information, a number of synchronization signal block based measurement timing configurations (SMTCs) (Y) per receive (Rx) beam of a number of Rx beams are determined. A subset number of Rx beams (NUE) of the number of Rx beams based on the measurement link information are determined. Radio resource management (RRM) measurements are performed according to the subset number of Rx beams.