PRS Processing Window Configuration for 5G Positioning Accuracy
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently configuring positioning reference signal (PRS) processing windows to minimize measurement gaps and optimize PRS processing capabilities in 5G networks, which affects positioning accuracy and latency.
Innovation Solution
A method where user equipment (UE) transmits capability messages to network entities indicating its PRS processing window capabilities and receives configuration messages to prioritize PRS processing over other channels, allowing for optimized PRS processing without measurement gaps, thereby enhancing positioning accuracy and reducing latency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If PRS processing is prioritized over other channels, then positioning accuracy is improved, but processing complexity and resource requirements increase
Solution Approach 1:
The patent implements dynamic PRS processing window configuration where the UE can be configured with different processing window sizes and priorities based on network conditions and positioning requirements. This allows the system to adapt the processing complexity dynamically rather than maintaining fixed high complexity always, thus improving positioning accuracy when needed while managing processing resources efficiently.
Solution Approach 2:
The patent changes key parameters including processing window size, measurement gap configuration, and PRS processing priority levels. By adjusting these parameters, the system can optimize the balance between positioning accuracy and processing complexity, allowing network entities to configure UEs with appropriate parameter sets based on their specific positioning needs and available resources.
2Loss of time
If measurement gaps are minimized, then positioning latency is reduced, but spectrum utilization efficiency decreases
Solution Approach 1:
The patent segments the PRS processing into different windows and time slots, allowing the UE to process PRS measurements during designated intervals rather than continuously. This segmentation enables the system to minimize measurement gaps for positioning accuracy while maintaining spectrum utilization efficiency by avoiding continuous exclusive access to positioning resources.
Solution Approach 2:
The patent implements periodic PRS measurement windows where the UE performs positioning measurements at scheduled intervals. This periodic action allows the system to reduce latency by maintaining regular measurement cycles while improving spectrum utilization by allowing other communications to occur during non-measurement periods, thus balancing timing requirements with resource efficiency.
3Adaptability or versatility
If multiple PRS processing window types are supported, then adaptability to different network conditions is improved, but configuration complexity increases
Solution Approach 1:
The patent designs a universal capability indication mechanism where the UE reports support for multiple PRS processing window types through a standardized capability message structure. This universal approach allows the network to select appropriate processing windows for different conditions without requiring complex UE configurations, thus improving adaptability while managing configuration complexity through network-side decision making.
Solution Approach 2:
The patent implements a feedback mechanism where the UE transmits capability messages indicating its supported PRS processing window types, and the network entity uses this feedback to configure the appropriate processing parameters. This feedback loop allows the system to adapt to different network conditions by selecting suitable processing windows based on UE capabilities and network requirements, while simplifying configuration through automated network-side parameter selection.
Data Source
AI summary
Disclosed are techniques for wireless communication. In an aspect, a user equipment (UE) receives positioning reference signal (PRS) resources of a PRS instance, receives at least one symbol of a high priority downlink channel scheduled during a PRS processing window for the PRS instance, wherein the high priority downlink channel is determined to have high priority based on the high priority downlink channel being associated with a high priority uplink channel, and refrains from processing the PRS resources of the PRS instance during the PRS processing window based on one or more conditions related to prioritizing PRS processing, wherein the one or more conditions indicate that the UE does not expect to process the PRS resources of the PRS instance during the PRS processing window based on the at least one symbol of the high priority downlink channel being scheduled during the PRS processing window.