Carrier Specific Search Thresholds for UE Measurement Control
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Solution Overview
Problem
Current communication systems face challenges in efficiently configuring user equipment (UE) to perform carrier aggregation and dual connectivity measurements, leading to increased latency and power consumption due to unnecessary inter-frequency carrier measurements when the serving cell quality is sufficient, and lack of precise control over search thresholds for carrier aggregation and dual connectivity.
Innovation Solution
Implementing configurable search thresholds on a per-carrier basis, allowing user equipment to selectively perform measurements based on serving cell quality and specific search threshold configurations, thereby reducing unnecessary measurements and improving measurement timing and overall system performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If user equipment performs inter-frequency carrier measurements on all carriers, then measurement coverage is improved, but power consumption and search complexity increase
Solution Approach 1:
The patent applies local quality by configuring different search threshold values for different carriers. Instead of uniformly measuring all carriers, the UE applies carrier-specific thresholds (SnonIntraSearchP-Q and SnonIntraSearchR-S) to determine which carriers require measurement. This selective approach maintains measurement coverage for important carriers while reducing power consumption by excluding carriers below their thresholds.
Solution Approach 2:
The patent changes the measurement parameter by introducing configurable search thresholds that dynamically control measurement behavior. The network can adjust threshold values per carrier based on importance, and the UE modifies its measurement actions accordingly - measuring when signal quality falls below threshold, skipping when above. This parameter-based control resolves the contradiction between comprehensive measurement and power efficiency.
2Measurement precision
If user equipment performs inter-frequency carrier measurements on all carriers, then measurement coverage is improved, but search complexity increases
Solution Approach 1:
The patent reduces search complexity through local quality by assigning different measurement requirements to different carriers. Each carrier has its own threshold configuration, allowing the UE to focus computational resources only on carriers that meet their specific thresholds. This selective measurement approach maintains coverage for critical carriers while simplifying the overall search process by excluding unnecessary carriers.
Solution Approach 2:
The patent applies segmentation by dividing carriers into measured and non-measured groups based on their respective thresholds. The UE segments the carrier set dynamically - when serving cell quality drops below a carrier's threshold, that carrier enters the measurement group; otherwise, it remains excluded. This segmentation reduces search complexity by processing only relevant carriers rather than all carriers uniformly.
3Adaptability or versatility
If user equipment performs carrier measurements when serving cell quality is sufficient, then carrier aggregation opportunities are improved, but latency increases due to unnecessary measurements
Solution Approach 1:
The patent uses parameter changes by configuring threshold values that control when measurements occur. Instead of continuous measurement, the UE changes its measurement behavior based on whether serving cell quality has crossed carrier-specific thresholds. This event-driven approach triggered by parameter comparison reduces unnecessary measurements and associated latency while maintaining adaptability to capture carrier aggregation opportunities when conditions warrant.
Solution Approach 2:
The patent implements periodic action through threshold-based triggering rather than continuous measurement. The UE periodically checks serving cell quality against configured thresholds and performs measurements only when the threshold condition is met. This periodic, condition-based measurement reduces latency by eliminating continuous measurement overhead while maintaining the ability to detect carrier aggregation opportunities when signal conditions appropriate.
Data Source
AI summary
According to a first embodiment, a method may include receiving, by a user equipment, at least one search threshold configuration. The method may further include determining, by the user equipment, at least one carrier measurement to perform according to the at least one received search threshold configuration. The method may further performing, by the user equipment, perform the at least one determined carrier measurement.