User Equipment PRS Measurement Timing for Gapless Positioning
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Solution Overview
Problem
Existing wireless cellular networks face challenges in accurately performing positioning measurements due to misalignment between network-configured and UE-specific timing intervals for positioning reference signals (PRS), leading to increased latency and inefficiencies in PRS measurement periods.
Innovation Solution
The solution involves defining a new timing interval for PRS measurement periods based on the effective periodicity of PRS resources, considering factors such as UE processing capabilities and network-assisted information, allowing for gap-less PRS measurements and concurrent processing with other network operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If measurement gaps are introduced for PRS measurements, then UE processing time is reduced, but measurement latency increases and positioning efficiency decreases
Solution Approach 1:
The patent applies dynamics by making the measurement gap configuration flexible and adaptable. The network can dynamically adjust gap patterns based on UE capabilities and positioning requirements, transitioning from static gap configurations to dynamic ones that optimize both processing time and measurement efficiency.
Solution Approach 2:
The patent changes key parameters including the measurement gap pattern, gap repetition period, and gap length to resolve the contradiction. By adjusting these parameters, the system can reduce measurement latency while maintaining adequate processing time for accurate positioning measurements.
2Ease of operation
If network-configured timing intervals are used for PRS measurements, then network control is simplified, but UE processing capabilities are not fully utilized leading to suboptimal measurement performance
Solution Approach 1:
The system transitions from static network-configured timing intervals to dynamic UE-specific timing intervals. The network provides configuration parameters, but the UE independently determines optimal measurement timing based on its processing capabilities, achieving both network control and UE optimization.
Solution Approach 2:
The patent implements feedback mechanisms where the UE reports its processing capabilities and measurement results to the network. This feedback loop enables the network to adjust timing configurations to better match UE processing characteristics, improving measurement precision while maintaining network control.
3Duration of action of moving object
If measurement gaps are configured for PRS measurements, then UE processing time is ensured, but concurrent processing with other network operations is reduced
Solution Approach 1:
The patent segments the measurement process into distinct phases: PRS reception during downlink slots and processing during UE-available time periods. This segmentation allows concurrent processing with other network operations by separating measurement functions from data transmission functions in time.
Solution Approach 2:
The system uses periodic measurement gap configurations that repeat at defined intervals. This periodic structure ensures UE processing time is guaranteed while allowing concurrent processing during non-gap periods, optimizing the balance between processing requirements and productivity.
Data Source
AI summary
Various embodiments herein provide techniques for positioning measurements in a wireless cellular network without a measurement gap. The measurements may be performed in one or more positioning frequency layers (PFLs). Additionally, techniques for activation and/or deactivation of a measurement gap are provided. Other embodiments may be described and claimed.