PRS Puncture Handling for Accurate UE Positioning Measurements
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Solution Overview
Problem
Conventional wireless communication systems face challenges in handling punctured positioning reference signals (PRS), leading to inefficiencies in measurement processes and reduced accuracy in wireless positioning.
Innovation Solution
A method for wireless communication systems that involves measuring multiple PRS instances, determining if they are punctured, and adjusting the measurement period by discarding or modifying the measurement process to accommodate punctured instances, allowing for dynamic bandwidth adjustment based on environmental conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the UE measures all PRS instances without checking for puncturing, then the measurement process is simple and fast, but positioning accuracy deteriorates due to incorrect measurements from punctured signals
Solution Approach 1:
The network provides puncturing indication information to the UE in advance before the UE performs PRS measurements. This allows the UE to know which PRS instances will be punctured beforehand, so it can selectively discard measurements from punctured instances and only process valid measurements, thereby improving positioning accuracy without significantly increasing processing complexity
Solution Approach 2:
The system implements a feedback mechanism where the network monitors PRS transmission status and sends puncturing indication information to the UE. This feedback loop enables the UE to adjust its measurement strategy based on actual network conditions, ensuring accurate positioning by excluding punctured PRS instances from measurement calculations
2Measurement precision
If the UE discards punctured PRS measurements and modifies measurement period, then positioning accuracy improves, but measurement time and processing complexity increase
Solution Approach 1:
The UE dynamically adjusts its measurement period based on puncturing indication information received from the network. When puncturing is detected, the UE modifies the measurement period to skip punctured PRS instances and focus on valid measurement opportunities. This dynamic adaptation allows the system to maintain positioning accuracy while minimizing measurement time loss by concentrating resources on valid measurements rather than wasting time on punctured ones
3Stability of the object's composition
If the UE continues using original measurement period after puncturing, then measurement schedule is maintained, but positioning accuracy deteriorates due to inclusion of invalid measurements
Solution Approach 1:
The UE applies different measurement strategies to different PRS instances based on local conditions (puncturing status). Instead of uniformly processing all PRS instances, the UE selectively discards measurements from punctured instances while maintaining measurements from valid instances. This localized differentiation allows the system to maintain overall measurement schedule stability while improving positioning accuracy by excluding only the problematic punctured measurements
Data Source
AI summary
Disclosed are various techniques for wireless communication. In an aspect, a user equipment (UE) measures, during a measurement period that spans multiple measurement opportunities, multiple positioning reference signal (PRS) instances, each PRS instance occupying a different measurement opportunity, to produce a plurality of positioning measurements. A PRS instance can be a PRS resource, a PRS resource set, a PRS frequency layer, a transmission/reception point, or combinations thereof. For each PRS instance measured, the UE determines whether the PRS instance was punctured. Upon a determination that the PRS instance was punctured, the UE discards at least a portion of the positioning measurement and modifies the measurement period, e.g., by restarting the measurement period or extending the measurement period in order to take a measurement of another PRS instance.