PRS Window Measurement Across Inactive BWPs for 5G Positioning
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Solution Overview
Problem
Existing wireless communication systems, particularly in the context of 5G, face challenges in accurately measuring downlink resources outside of an active bandwidth part (BWP) during a positioning reference signal processing window, which affects the precision of positioning services.
Innovation Solution
A method and system for user equipment (UE) to receive a configuration of a positioning reference signal (PRS) processing window (PPW) and perform measurements of downlink resources outside the active BWP, enabling accurate measurement and reporting of positioning signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the UE only measures downlink resources within the active BWP during the PRS processing window, then the measurement process is simple and resource-efficient, but the positioning accuracy deteriorates due to insufficient measurement data
Solution Approach 1:
The patent implements dynamic BWP switching during the PRS processing window to enable measurements outside the active BWP. The UE switches between different BWPs based on the PRS resource configuration, allowing it to access downlink resources in both active and inactive BWPs for comprehensive positioning measurements without permanently maintaining complex multi-BWP monitoring
Solution Approach 2:
The patent performs preliminary configuration of multiple BWPs and their associations with PRS resources before the positioning measurement process. This pre-configuration includes setting up the BWP list, determining which BWPs contain PRS resources, and establishing the measurement configuration, so that during the actual PRS processing window, the UE can efficiently switch and measure without real-time decision complexity
2Measurement precision
If the UE measures downlink resources outside the active BWP, then the positioning accuracy improves, but the energy consumption increases due to additional resource monitoring
Solution Approach 1:
The patent implements partial measurement by selectively measuring only the necessary downlink resources outside the active BWP that are associated with PRS configurations, rather than monitoring all possible resources. The UE determines which inactive BWPs contain PRS resources and performs measurements only on those specific resources, achieving improved positioning accuracy while limiting energy consumption to only the essential additional measurements required
3Adaptability or versatility
If the UE monitors multiple BWPs for PRS resources, then the adaptability of positioning measurements improves, but the processing time increases
Solution Approach 1:
The patent segments the BWP monitoring and measurement process into distinct phases: configuration phase where multiple BWPs are set up with their PRS resource associations, and execution phase where the UE efficiently switches between BWPs during the PRS processing window based on pre-determined configurations. This segmentation allows the system to maintain high adaptability across different deployment scenarios while reducing processing time during actual measurements through efficient resource switching
Data Source
AI summary
Disclosed are techniques for wireless communication. In an aspect, a user equipment (UE) receives a configuration of a positioning reference signal (PRS) processing window (PPW) of an active bandwidth part (BWP), determines to perform one or more measurements of one or more downlink resources outside of the active BWP during the PPW, and performs the one or more measurements outside of the active BWP during the PPW in accordance with the determination.