OTT Reference Signal Positioning With Scaled Uncertainty Estimation

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Solution Overview

Problem

Existing wireless positioning technologies face challenges in accurately determining positional uncertainty, which affects the reliability and accuracy of positioning measurements in 5G wireless communication systems.

Innovation Solution

The method involves receiving over-the-top (OTT) reference signals from multiple cells, obtaining an estimated positioning measurement, and applying a scale factor corresponding to a confidence level to calculate positional uncertainty, enhancing the reliability of positioning measurements.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If existing wireless positioning technologies are used, then positioning measurements can be obtained, but positional uncertainty cannot be accurately determined

Engineering Contradiction:

Improvepositioning measurement accuracyVSAvoidpositional uncertainty determination

Core Design Contradiction:

Measurement precisionVSReliability

Solution Approach 1:

The patent applies parameter changes by introducing a scale factor that transforms the relationship between positioning measurement and positional uncertainty. The scale factor is determined based on the correlation between positioning measurement and reference uncertainty, allowing dynamic adjustment of the uncertainty calculation parameters to achieve accurate positional uncertainty determination while maintaining positioning measurement accuracy.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent uses reference uncertainty as an intermediary element to bridge the gap between positioning measurement and actual positional uncertainty. By obtaining reference uncertainty from reference signals and using it to determine the scale factor, the system indirectly calculates positional uncertainty with high reliability, resolving the contradiction between measurement accuracy and uncertainty determination reliability.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If positional uncertainty is determined with high reliability, then positioning accuracy is improved, but the complexity of the positioning system increases

Engineering Contradiction:

Improvepositional uncertainty reliabilityVSAvoidpositioning system complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent applies preliminary action by obtaining reference uncertainty from reference signals before calculating the final positional uncertainty. This pre-computation of reference uncertainty allows the scale factor to be determined in advance, simplifying the overall calculation process while maintaining high reliability in positional uncertainty determination.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent changes the parameter relationship by establishing a correlation-based scale factor that simplifies the uncertainty calculation. Instead of complex multi-parameter models, the system uses a single scale factor derived from the correlation between positioning measurement and reference uncertainty, reducing computational complexity while maintaining reliability.

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS20260025782A1Advanced uncertainty model for terrestrial positioning

Publication Date: 2026.01.22 QUALCOMM INC

AI summary

Disclosed are techniques for wireless positioning. In some aspects, a user equipment (UE) may receive a plurality of over-the-top (OTT) reference signals from a plurality of cells. The UE may obtain an estimated positioning measurement based on the plurality of OTT reference signals. The UE may obtain a positional uncertainty of the estimated positioning measurement by scaling the estimated positioning measurement with a scale factor corresponding to a confidence level.