Positioning Measurement Reporting for Mobile UE Partial Reports
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Solution Overview
Problem
In 5G NR networks, UEs in RRC_INACTIVE state face constraints on reporting overhead and positioning accuracy due to partial reporting procedures, where ongoing measurements may not reflect the UE's current location, and new measurements are delayed until previous reports are completed.
Innovation Solution
The UE reports positioning measurements through inactive state data transmission with an additional indication of mobility, allowing the LMF to jointly utilize measurements or adjust them based on UE mobility, reducing unnecessary reporting and improving accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the UE reports positioning measurements through multiple data transmissions in RRC_INACTIVE state, then the positioning accuracy is improved, but the reporting overhead and power consumption increase
Solution Approach 1:
The patent divides the positioning measurement reporting into multiple segments transmitted across different data transmissions. Each segment contains a portion of the measurement results, and the network can reconstruct the complete positioning information by combining these segments. This segmentation allows the UE to report positioning measurements without transitioning to RRC_CONNECTED state, thereby reducing power consumption while maintaining positioning accuracy.
2Loss of energy
If the UE performs partial reporting procedure across multiple time slots, then the reporting overhead is reduced, but the positioning accuracy deteriorates due to UE location changes
Solution Approach 1:
The patent introduces a mechanism where the UE performs preliminary actions during the partial reporting procedure by indicating whether its location has changed between measurements. This allows the network to determine whether to combine multiple measurement segments or use only the most recent measurements, thereby maintaining positioning accuracy while still benefiting from reduced reporting overhead through partial reporting.
3Loss of energy
If the UE waits for ongoing partial reporting procedure to complete before reporting new measurements, then the reporting overhead is reduced, but the positioning accuracy is impacted due to measurement delays
Solution Approach 1:
The patent implements a dynamic reporting mechanism where the UE can adapt its reporting behavior based on location changes. When the UE detects that its location has changed significantly, it can interrupt the ongoing partial reporting procedure and transmit new measurement segments immediately. This dynamic approach ensures that the network receives up-to-date positioning information without excessive delays, while still maintaining reduced overhead compared to continuous reporting.
Data Source
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AI summary
Embodiments of the present disclosure relate to methods, devices, apparatuses, and computer readable medium for positioning measurement report. The method comprises: performing, at a first device and based on a set of measurement parameters, positioning measurements; and reporting, at a reporting instance and to a second device, a first part of the positioning measurements with an indication regarding whether or not the first part of the positioning measurements is to be jointly utilized with a second part of the positioning measurements to estimate a location of the first device, the second part of the positioning measurements being previously reported to the second device. In this way, the UE is capable of providing assistant information about location change, which may in turn improve the positioning accuracy. In addition, unnecessary measurements on all the PRS resources can be avoided, thus such a reporting mechanism can reduce power consumption at the UE.