RSTD Measurement Report Enhancements for Multi-Timing Error Group Requests

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Solution Overview

Problem

Current wireless positioning systems face challenges in accurately measuring reference signal time differences (RSTD) using receive timing error groups (Rx TEGs) for multi-timing error group requests, which affects the precision of location determination in 5G wireless communications.

Innovation Solution

A method and system for a first network node to receive measurement requests from a location server to measure positioning reference signals (PRS) using multiple Rx TEGs and transmit corresponding measurement reports, enhancing the accuracy of RSTD measurements for improved positioning in 5G wireless communications.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If multi-timing error group (TEG) requests are implemented for RSTD measurement, then positioning accuracy is improved, but measurement complexity increases

Engineering Contradiction:
ImproveRSTD measurement accuracyVSAvoidmeasurement complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The patent segments the RSTD measurement process by introducing multiple receive timing error groups (Rx TEGs), where each TEG handles a specific timing error range. This segmentation allows the system to address different timing scenarios with specialized measurement procedures, improving overall accuracy while managing complexity through structured division of the measurement task.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent implements preliminary actions by performing timing error group identification and selection before the actual RSTD measurement. The system pre-configures multiple Rx TEGs with different timing characteristics and selects the appropriate TEG based on initial signal analysis, thereby optimizing measurement accuracy for the specific scenario while avoiding unnecessary complexity in the main measurement process.

Inventive Principle:
Principle #10Preliminary action

2Reliability

If multiple receive timing error groups (Rx TEGs) are used for PRS measurement, then positioning reliability is improved, but processing overhead increases

Engineering Contradiction:
Improvepositioning reliabilityVSAvoidprocessing overhead
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The patent applies dynamics by making the Rx TEG selection adaptive rather than static. The system dynamically selects which TEG to use based on real-time signal conditions and timing error characteristics, ensuring optimal reliability for each measurement scenario while minimizing processing overhead by activating only the necessary TEGs rather than processing all of them uniformly.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The patent changes parameters by adjusting the timing error range and measurement configuration based on the selected Rx TEG. Different TEGs have different timing error tolerances and measurement parameters, allowing the system to optimize for reliability in each specific case while reducing overall processing requirements compared to a single comprehensive measurement approach.

Inventive Principle:
Principle #35Parameter changes

Data Source

PatentUS12200658B2Reference signal time difference (RSTD) measurement report enhancements for multi-timing error group (TEG) requests
Publication Date: 2025.01.14 QUALCOMM INC
  • US12200658B2 patent drawing
  • US12200658B2 patent drawing
  • US12200658B2 patent drawing

AI summary

Disclosed are techniques for wireless positioning. In an aspect, a first network node receives a measurement request from a location server, the measurement request requesting the first network node to measure a positioning reference signal (PRS) resource from at least one second network node using a plurality of receive timing error groups (Rx TEGs) of the first network node, and transmits a measurement report to the location server, the measurement report including a plurality of positioning measurements based on the PRS resource, the plurality of positioning measurements corresponding to the plurality of Rx TEGs.