Searcher Resource Coordination for NR and LTE PRS Measurement
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Solution Overview
Problem
Current wireless communication systems, particularly in 5G networks, face challenges in efficiently coordinating searcher resources for cell measurement and synchronization between NR and LTE technologies, especially when PRS and SSB occasions collide in time domain, leading to unclear UE behavior and inefficient resource allocation.
Innovation Solution
The proposed solution involves prioritizing and coordinating searcher resource sharing between NR mobility-based measurements and LTE PRS measurements, using specific thresholds and resource allocation percentages to ensure seamless coordination without measurement gaps in EN-DC or NE-DC modes, allowing for efficient sharing and prioritization of searchers based on PRS periodicity and muting conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If searcher resources are shared between NR and LTE measurements without measurement gap, then measurement continuity and network performance are improved, but resource allocation ambiguity and UE behavior uncertainty increase when PRS and SSB occasions collide
Solution Approach 1:
The patent applies parameter changes by introducing a threshold mechanism (first threshold for PRS periodicity) that changes the resource allocation strategy based on measured parameters. When PRS periodicity exceeds the threshold, prioritization is applied; otherwise, equal sharing occurs. This resolves the contradiction by providing clear, parameter-based rules for resource allocation that eliminate ambiguity while maintaining continuous measurement capability.
Solution Approach 2:
The patent implements feedback mechanisms where the UE reports measurement results and the network adjusts resource allocation accordingly. The network node receives measurement information and modifies searcher resource allocation based on actual measurement needs, creating a closed-loop system that maintains both continuity and clarity in resource sharing.
2Difficulty of detecting and measuring
If prioritization is applied based on PRS periodicity thresholds, then resource allocation clarity is improved, but measurement accuracy and synchronization reliability may deteriorate due to rigid rules
Solution Approach 1:
The patent applies dynamics by making the resource allocation strategy adaptable rather than fixed. The thresholds and prioritization rules are configured based on actual network conditions and measurement requirements, allowing the system to adjust dynamically. This resolves the contradiction by providing clear allocation rules that can adapt to different scenarios, maintaining both clarity and measurement accuracy.
Solution Approach 2:
The patent implements preliminary action by pre-configuring threshold values and prioritization strategies before measurement operations begin. The UE and network node agree on allocation rules in advance, ensuring clarity during execution while the pre-planned flexibility allows adaptation to maintain measurement accuracy and reliability.
3Productivity
If measurement gaps are eliminated for continuous measurement, then productivity is improved, but searcher resource conflicts and coordination complexity increase
Solution Approach 1:
The patent applies segmentation by dividing the searcher resource sharing into distinct scenarios based on PRS periodicity thresholds and measurement types. Different segmentation rules are applied for different conditions (PRS periodicity > threshold vs. ≤ threshold, intra-band vs. inter-band carrier), which simplifies the coordination complexity while maintaining continuous measurement capability through structured decision logic.
Data Source
AI summary
Methods and apparatus are provided for searcher resource coordination between NR mobility based measurement and LTE (E-UTRA) PRS based measurement without measurement gap in EN-DC mode or NE-DC mode. Other embodiments are also provided for searcher resource coordination between NR PRS measurement and LTE (E-UTRA) PRS measurement without measurement gap in EN-DC mode or NE-DC mode. Further embodiments provide for searcher resource coordination between NR or LTE (E-UTRA) PRS measurement and NR mobility measurement without measurement gap in EN-DC mode or NE-DC mode.