RSTD Measurement Accuracy Across PRS Bandwidth and SCS

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

The increasing complexity of next-generation wireless networks, including 5G and 6G, poses challenges in accurate UE location determination due to the diverse range of devices and data bandwidth demands, which complicates network environments.

Innovation Solution

Implementing enhanced RSTD (Reference Signal Time Difference) measurement techniques in network architectures to improve UE location accuracy by optimizing signal processing and network functionality.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If RSTD measurement accuracy requirements are strictly enforced, then UE location determination accuracy is improved, but network complexity and device diversity challenges increase

Engineering Contradiction:

ImproveUE location determination accuracyVSAvoidnetwork environment complexity

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The patent dynamically adjusts RSTD measurement configurations based on UE capabilities and network conditions. The system adapts measurement parameters such as reference signal type, measurement bandwidth, and processing methods according to the specific UE device characteristics and current network environment, allowing accurate location determination while managing network complexity through flexible, context-aware measurement setup.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent modifies key measurement parameters including reference signal time difference measurement bandwidth, reference signal type (e.g., SSB, CSI-RS), and measurement processing methods. By changing these parameters based on network conditions and UE capabilities, the system achieves accurate location measurements without requiring a fixed complex infrastructure, thus resolving the contradiction between measurement precision and network complexity.

Inventive Principle:

Principle #35Parameter changes

2Measurement precision

If enhanced RSTD measurement techniques are implemented, then location accuracy is improved, but measurement processing complexity increases

Engineering Contradiction:

ImproveRSTD measurement accuracyVSAvoidsignal processing complexity

Core Design Contradiction:

Measurement precisionVSDifficulty of detecting and measuring

Solution Approach 1:

The patent segments the RSTD measurement process into distinct functional components: reference signal transmission, UE measurement execution, and network processing. By dividing the measurement workflow into manageable segments with clear responsibilities, the system reduces overall processing complexity while maintaining measurement accuracy. Each segment can be optimized independently based on specific requirements.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent introduces intermediary processing elements that facilitate accurate RSTD measurements without directly increasing UE or network processing burden. These intermediaries include measurement assistance data structures, pre-configured measurement parameters, and intermediate calculation results that simplify the overall measurement process while ensuring accuracy requirements are met.

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUS12445213B2RSTD measurement accuracy requirements applicability

Publication Date: 2025.10.14 INTEL CORP

AI summary

An apparatus and system for determining positioning measurement accuracy are described. A UE receives positioning reference signals (PRS) from a reference cell and a neighbor cell and reference signal time difference (RSTD) measurements based on the PRS. RSTD and other PRS measurement results based on the reference and neighbor cells have RSTD and other PRS measurement accuracy requirements, that depend on bandwidth (BW), subcarrier spacing (SCS), and repetition factor of the PRS.