Uplink PRS Report Prioritization for Accurate UE Positioning
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Solution Overview
Problem
Conventional wireless communication systems face challenges in efficiently managing positioning reference signals (PRS) due to environmental conditions, leading to inaccurate UE positioning and increased bandwidth usage.
Innovation Solution
A method for dynamically adjusting PRS bandwidth based on environmental conditions, allowing a UE to indicate operational conditions to a transmitting entity, which can adjust PRS bandwidth accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If PRS bandwidth is increased to improve positioning accuracy, then positioning precision is improved, but bandwidth usage increases
Solution Approach 1:
The patent implements dynamic adjustment of PRS bandwidth based on environmental conditions. The UE determines positioning accuracy requirements and environmental factors (such as mobility state, signal quality, location requirements), then dynamically configures the PRS bandwidth accordingly. This allows the system to use higher bandwidth only when necessary for accurate positioning, rather than continuously using maximum bandwidth, thus resolving the contradiction between positioning accuracy and bandwidth consumption.
2Measurement precision
If PRS bandwidth is increased to improve UE positioning precision, then positioning precision is improved, but system resource consumption increases
Solution Approach 1:
The patent changes the bandwidth parameter of PRS dynamically based on determined environmental conditions and positioning requirements. The network entity and UE negotiate and adjust PRS configuration parameters including bandwidth, periodicity, and frequency offset according to actual positioning needs, signal conditions, and mobility states. This parameter adaptation ensures optimal positioning precision while minimizing system resource consumption by using only the necessary bandwidth for each positioning scenario.
Data Source
AI summary
Disclosed are various techniques for wireless communication. In an aspect, a user equipment (UE) identifies a set of positioning sources, each positioning source comprising a positioning reference signal (PRS) resource, a PRS resource set, a PRS frequency layer, and/or a transmission/reception point (TRP). From the set of positioning sources, the UE identifies a consistency group comprising a collection of positioning sources grouped based on expected values of at least one metric of a reference signal from each positioning source, measured values of the at least one metric for the reference signal from each positioning source, and an error threshold. The UE identifies one or more subsets of positioning sources within the consistency group, each subset having at least one metric error value. The UE reports, to a network entity, information about the consistency group and information about at least one of the subsets of positioning sources within the consistency group.