UE Position Estimation via Interpolation Across Timed Measurements
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Solution Overview
Problem
Existing wireless communication systems face challenges in accurately estimating the position of user equipment (UE) at a specified time, particularly in 5G networks, due to increased complexity and the need for enhanced spectral efficiency and reduced latency.
Innovation Solution
A method and system for performing positioning measurements at multiple times to determine a UE's positioning estimate at a specified time, involving wireless nodes and network components that request, perform, and transmit/receive positioning estimates based on these measurements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If positioning measurements are performed at multiple times to determine UE position at a specified time, then positioning precision is improved, but measurement time and processing complexity increase
Solution Approach 1:
The patent performs positioning measurements at multiple times (t1, t2, t3) before the specified time T, and uses interpolation or extrapolation algorithms to estimate the UE position at time T. This preliminary action approach allows the system to obtain accurate positioning estimates without performing measurements exactly at the required time, thus reducing measurement time while maintaining precision.
Solution Approach 2:
The patent dynamically adjusts the measurement times and intervals based on UE mobility characteristics. For moving UEs, measurements are taken at intervals that capture sufficient motion information for accurate interpolation, while for stationary UEs, fewer measurements are needed. This dynamic approach optimizes the balance between measurement time and positioning accuracy.
2Measurement precision
If positioning measurements are performed at multiple times, then positioning precision is improved, but device complexity increases
Solution Approach 1:
The patent divides the positioning process into separate measurement phases and estimation phases. Measurements are collected at multiple discrete time points, then a separate interpolation/extrapolation algorithm estimates the position at the specified time. This segmentation allows each phase to be optimized independently, reducing overall processing complexity while maintaining accuracy.
Solution Approach 2:
The patent uses measurement data from multiple time points as 'copies' to reconstruct the UE position at the specified time through mathematical interpolation. Instead of performing complex real-time measurements at the exact required moment, the system creates a computational model based on historical measurement copies, simplifying the actual measurement process while maintaining precision.
3Measurement precision
If positioning measurements are performed at multiple times, then positioning precision is improved, but spectral efficiency decreases
Solution Approach 1:
The patent uses the same wireless communication signals for both data transmission and positioning measurements. By making the positioning measurement process multi-functional (serving both communication and positioning purposes), the system obtains accurate positioning data without requiring dedicated positioning signal resources, thus maintaining spectral efficiency while improving positioning precision.
Data Source
AI summary
In an embodiment, a wireless node (e.g., UE or BS) receives from a network component (e.g., BS or core network component) a request for a positioning estimate of a UE associated with a specified time. The wireless node performs positioning measurements at a plurality of times, and determines (e.g., via interpolation or extrapolation) the positioning estimate associated with the specified time based on the positioning measurements. The wireless node transmits, to the network component, a report comprising the determined positioning estimate.