UE Beam Selection via Reliability-Adaptive Filtering
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Solution Overview
Problem
Existing beam selection procedures in high-frequency wireless communication networks face challenges such as short session times, high bandwidth, and high throughput, leading to the need for a fast and reliable UE-side beam selection method.
Innovation Solution
A UE-side beam selection procedure that involves receiving downlink reference signals, associating them with reliability values, determining filter settings based on reliability and movement, filtering the signals, performing RSRP measurements, and selecting the best beam for communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If beam selection procedure is made faster to accommodate short session times, then productivity is improved, but measurement precision deteriorates
Solution Approach 1:
The patent applies preliminary action by performing RSRP measurements multiple times before final beam selection. The UE performs initial measurements, then conducts additional measurements based on reliability assessment, and only finalizes beam selection after sufficient measurements are completed. This staged approach allows the system to balance speed with measurement precision by preparing measurement data in advance and using it progressively.
Solution Approach 2:
The patent implements feedback mechanisms where the UE continuously monitors measurement reliability and adjusts the beam selection process accordingly. Based on feedback from reliability assessment, the system determines whether additional measurements are needed and dynamically adjusts the measurement and selection process to ensure adequate precision while maintaining overall speed.
2Measurement precision
If multiple RSRP measurements are performed to improve reliability, then measurement precision is improved, but loss of time increases
Solution Approach 1:
The patent applies dynamics by making the number of measurements flexible rather than fixed. The UE dynamically determines how many RSRP measurements to perform based on real-time reliability assessment. When measurements indicate sufficient reliability, the process stops early; when reliability is insufficient, additional measurements are performed. This dynamic adjustment optimizes the trade-off between measurement precision and time loss.
Solution Approach 2:
The system performs preliminary reliability assessment after initial measurements to determine whether additional measurements are necessary. This preliminary action allows the UE to avoid unnecessary measurements that would waste time, while ensuring sufficient measurements are performed when needed to achieve reliable beam selection.
3Adaptability or versatility
If filter settings are adjusted based on movement and reliability, then adaptability is improved, but device complexity increases
Solution Approach 1:
The patent implements self-service by having the UE automatically determine appropriate filter settings based on its own movement characteristics and measurement reliability. The system self-adjusts the number and timing of measurements without requiring complex external control or manual configuration, thereby achieving adaptability while keeping the implementation relatively simple.
Solution Approach 2:
The patent applies parameter changes by dynamically adjusting measurement parameters (number of measurements, timing, filter characteristics) based on changing propagation environment conditions and UE movement. This allows the system to adapt to different scenarios by modifying key parameters rather than requiring complex reconfiguration of the entire beam selection process.
Data Source
AI summary
There is provided a UE-side beam selection procedure. According to the UE-side beam selection procedure, a user equipment, based on an estimated reliability value of received downlink reference signals and the movement of the user equipment, determines how to filter the received downlink reference signals measurements when determining which candidate beam to use for communication with a network node.