RedCap UE Synchronization Thresholds for NTN Resource Constraints
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Solution Overview
Problem
Reduced capacity user equipment (RedCap UEs) in non-terrestrial networks face challenges with power, memory, and computational resource constraints that hinder effective timing and frequency synchronization, leading to inefficient communication processes.
Innovation Solution
The implementation of reduced capacity synchronization accuracy thresholds for RedCap UEs, allowing them to communicate with non-terrestrial devices using lower synchronization accuracy levels, thereby reducing power, memory, and computational resource consumption during synchronization processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If reduced capacity UE uses standard synchronization accuracy thresholds, then synchronization precision is maintained, but power consumption and computational resources exceed device capabilities
Solution Approach 1:
The patent applies parameter changes by introducing differentiated synchronization accuracy thresholds specifically for RedCap UEs. The network configures separate threshold parameters (e.g., syncAccuracyThresholdUL, syncAccuracyThresholdDL) that are lower than standard thresholds, allowing RedCap devices to operate with relaxed synchronization requirements while maintaining acceptable communication performance.
Solution Approach 2:
The patent implements local quality by applying different synchronization accuracy requirements to different device types. Instead of a universal threshold, the system provides tailored synchronization parameters for RedCap UEs versus enhanced mobile broadband devices, allowing each device category to operate at an appropriate accuracy level matching its capabilities and use case.
2Reliability
If reduced capacity UE uses standard synchronization accuracy thresholds, then communication reliability is maintained, but computational resources and memory are insufficient
Solution Approach 1:
The patent changes the synchronization accuracy threshold parameters to match RedCap UE capabilities. By configuring lower thresholds for these devices, the system reduces the computational burden of synchronization algorithms while maintaining sufficient communication reliability for the intended application scenarios.
Solution Approach 2:
The patent applies partial action by implementing synchronization accuracy requirements that are sufficient for RedCap UE performance needs but not excessive. The relaxed thresholds represent a partial reduction from standard requirements, providing just enough accuracy for reliable communication without demanding full computational resources.
3Productivity
If reduced capacity UE performs high accuracy synchronization, then network performance is optimized, but resource consumption exceeds device capacity
Solution Approach 1:
The patent optimizes network performance for RedCap UEs by adjusting synchronization accuracy parameters to appropriate levels. Rather than forcing high accuracy requirements, the system configures parameters that achieve sufficient performance for the device class, reducing energy loss while maintaining acceptable productivity.
Solution Approach 2:
The patent introduces dynamic parameter configuration where synchronization accuracy thresholds are adapted based on device type and capabilities. The network can dynamically assign different threshold values to different UEs, allowing optimal resource consumption and performance balance for each device category.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may determine an uplink and/or downlink synchronization accuracy level that satisfies a reduced capacity synchronization accuracy threshold, wherein the UE comprises a reduced capacity UE and wherein the reduced capacity synchronization accuracy threshold is lower than a synchronization accuracy threshold of an enhanced mobile broadband device. The UE may communicate with a non-terrestrial wireless communication device based at least in part on the synchronization accuracy level. Numerous other aspects are described.