Dynamic TRRP Signaling for Wireless Positioning Accuracy

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Solution Overview

Problem

Conventional wireless communication systems face challenges in accurately determining the position of user devices due to discrepancies between the reference point and the true radiation reference point (TRRP) used in geometry-based positioning methods, leading to significant uncertainties and errors, especially with the use of static reference points and beamforming across multiple antennas.

Innovation Solution

The solution involves signaling and handling dynamic changes in the Transmission and Reception Reference Point (TRRP) and associated delays, providing accurate TRRP information for precise positioning, and incorporating Transmission and Reception Reference Information (TRRI) to improve the accuracy of position determination in wireless communication networks.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If static reference points are used for positioning, then device complexity is reduced, but measurement precision deteriorates due to discrepancies between reference point and true radiation reference point

Engineering Contradiction:

Improvepositioning system complexityVSAvoidpositioning accuracy

Core Design Contradiction:

Device complexityVSMeasurement precision

Solution Approach 1:

The patent transitions from static reference points to dynamic TRRP tracking. The system now determines and updates the Transmission and Reception Reference Point dynamically based on actual beamforming operations, allowing the reference point to adapt to changing antenna configurations and beam directions, thereby resolving the contradiction between simplicity and precision.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent changes the positioning parameter from a fixed static reference point to a dynamic TRRP that varies with beamforming parameters. By tracking and updating TRRP based on actual antenna phase and amplitude adjustments, the system achieves higher positioning accuracy without requiring complex hardware modifications.

Inventive Principle:

Principle #35Parameter changes

2Reliability

If beamforming across multiple antennas is used, then signal quality is improved, but measurement precision deteriorates due to TRRP discrepancies

Engineering Contradiction:

Improvesignal qualityVSAvoidpositioning accuracy

Core Design Contradiction:

ReliabilityVSMeasurement precision

Solution Approach 1:

The patent implements a feedback mechanism where the system continuously tracks the TRRP based on actual beamforming operations. The determined TRRP information is fed back to correct positioning calculations, compensating for discrepancies introduced by beamforming across multiple antennas and maintaining positioning accuracy despite signal quality improvements.

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The patent performs preliminary determination of the TRRP before positioning calculations. By pre-calculating and storing TRRP information based on anticipated beamforming configurations, the system prepares correction data in advance, eliminating positioning errors that would otherwise result from TRRP discrepancies during actual beamforming operations.

Inventive Principle:

Principle #10Preliminary action

3Measurement precision

If dynamic TRRP information is tracked and signaled, then measurement precision is improved, but device complexity increases

Engineering Contradiction:

Improvepositioning accuracyVSAvoidpositioning system complexity

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The patent introduces TRRP information as an intermediary element that mediates between the complex beamforming operations and the positioning calculation. Rather than directly processing complex antenna phase and amplitude data, the system uses the determined TRRP as a simplified intermediate parameter to correct positioning calculations, reducing the complexity burden while maintaining high precision.

Inventive Principle:

Principle #24Intermediary (Mediator)

4Measurement precision

If correct TRRP accounting is implemented, then measurement precision is improved to centimeter-level accuracy, but loss of information is reduced

Engineering Contradiction:

Improvepositioning accuracyVSAvoidpositioning error information

Core Design Contradiction:

Measurement precisionVSLoss of information

Solution Approach 1:

The patent replaces the mechanical assumption of static reference points with a dynamic information-based TRRP tracking system. By substituting the simplified but inaccurate mechanical reference model with dynamic TRRP information derived from actual beamforming operations, the system eliminates positioning errors while achieving centimeter-level accuracy without significant information loss.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Data Source

PatentUS20230273283A1Positioning enhancement for precoded signals with dynamic context information

Publication Date: 2023.08.31 KONINKLIJKE PHILIPS NV

AI summary

An apparatus for determining a position of an entity of a wireless communication network, the comprises a position determining processor to determine a position of a first entity (gNB, UE, IoT) in the wireless communication network using one or more position measurements between the first entity and one or more second entities (gNB, UE, IoT), each of the first and second entities comprising one or more antennas to transmit and/or receive a radio signal for the position measurement. The position determining processor is to determine the position of the first entity using a transmission reception reference point, TRRP, of the radio signal at the one or more antennas of the first entity and/or the one or more second entities.