UE Location Reporting in Non-Terrestrial Networks

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Solution Overview

Problem

Current wireless communication systems face inefficiencies in location information reporting, particularly in Non-Terrestrial Networks (NTNs), where traditional methods struggle to accurately and efficiently manage handovers and measurement reporting due to challenges like propagation delays and unreliable reference signal measurements.

Innovation Solution

The implementation of a method and apparatus for User Equipment (UE) location reporting in wireless communication systems, which includes configuring UE to report location-based events and radio condition-based events, allowing for enhanced measurement reporting configurations and assistance information exchange between UE and the network to improve handover management and coverage in NTN environments.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If traditional location reporting methods are used in NTNs, then the system maintains simplicity in implementation, but the accuracy and efficiency of location reporting deteriorates due to propagation delays and unreliable reference signal measurements

Engineering Contradiction:
Improvelocation reporting accuracyVSAvoidmeasurement reporting configuration complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The patent segments the measurement reporting system into two distinct configurations: location-based event reporting and radio condition-based event reporting. This segmentation allows the system to handle different reporting needs separately, improving location reporting accuracy without overwhelming the system with complex unified configurations. Each configuration type addresses specific aspects of measurement reporting independently.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent changes the parameters of measurement reporting by introducing event-triggered reporting mechanisms with specific conditions (location-based events and radio condition-based events). This transforms the traditional continuous or periodic reporting into conditional reporting, thereby improving accuracy by reporting only when significant changes occur, while managing complexity through well-defined trigger conditions.

Inventive Principle:
Principle #35Parameter changes

2Reliability

If comprehensive measurement reporting is implemented in NTNs, then the network performance improves, but the signaling overhead increases

Engineering Contradiction:
Improvehandover management reliabilityVSAvoidsignaling overhead
Core Design Contradiction:
ReliabilityVSLoss of substance

Solution Approach 1:

The patent applies partial action by implementing event-triggered reporting that activates only when specific conditions are met (location-based or radio condition-based events). Instead of continuous comprehensive reporting, the system performs measurements and reports only when necessary, thereby maintaining handover management reliability while significantly reducing signaling overhead compared to exhaustive reporting methods.

Inventive Principle:
Principle #16Partial or excessive action

Solution Approach 2:

The patent implements feedback mechanisms where the UE continuously monitors both location-based and radio condition-based parameters, and provides feedback reports to the network only when predefined events occur. This feedback approach ensures the network receives critical information for reliable handover management while minimizing unnecessary signaling transmissions that would increase overhead.

Inventive Principle:
Principle #23Feedback

3Productivity

If location-based event triggering is added to measurement reporting, then the efficiency of location reporting improves, but the device complexity increases

Engineering Contradiction:
Improvelocation reporting efficiencyVSAvoidmeasurement configuration complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The patent merges location-based event triggering with radio condition-based event triggering into a unified measurement reporting framework. By combining these two event types, the system achieves efficient location reporting through location-based events while maintaining overall system manageability through the structured integration with radio condition events. This merging approach distributes the complexity across two complementary configurations rather than concentrating it in a single complex mechanism.

Inventive Principle:
Principle #5Merging (Combining)

Data Source

PatentEP4161209B1Method and apparatus for UE location report in a wireless communication system
Publication Date: 2024.10.30 ASUSTEK COMPUTER INC
  • EP4161209B1 patent drawingFigure 1
  • EP4161209B1 patent drawingFigure 2
  • EP4161209B1 patent drawingFigure 3

AI summary

Methods, systems, and apparatuses are provided for User Equipment, UE, location reporting in a wireless communication system to facilitate efficiency in measurement reporting in Non-Terrestrial Networks, NTNs. A method (1020) for a UE in a wireless communication system comprises receiving (1020) a first configuration to trigger measurement reporting based on a first event that distance between the UE and a first reference location of a serving cell becomes larger than a distance threshold and distance between the UE and a second reference location of a first neighbor cell becomes shorter than another distance threshold, and triggering (1024) a first measurement report based on the first event, wherein measured radio condition of the first neighbor cell is omitted or not included in the first measurement report.