UAV Height Thresholds Trigger Tracking Area Updates for Network Services

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Solution Overview

Problem

In wireless communication systems, there is no process for the network to be informed of the height change of an aerial UE, necessitating height-based location updates for providing aerial UE-specific services.

Innovation Solution

A wireless device monitors its height and initiates a tracking area update procedure when passing threshold heights, enabling height-based location updates.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the network configures NAS parameters during registration procedure, then the UE can be provided with network services, but the network cannot update NAS configuration when the UE height changes

Engineering Contradiction:
Improvenetwork service adaptabilityVSAvoidheight information
Core Design Contradiction:
Adaptability or versatilityVSLoss of information

Solution Approach 1:

The patent applies preliminary action by having the UE proactively trigger a location update procedure when it detects that its height has changed and crossed a threshold. This preliminary action ensures that the network is informed of the height change before services need to be adapted, allowing the network to update NAS configuration parameters in advance. The UE monitors its height and initiates the update procedure proactively, rather than waiting for the network to detect the change.

Inventive Principle:
Principle #10Preliminary action

2Adaptability or versatility

If the UE performs registration process for height-based services, then the network can provide UAV-specific services, but the UE must continuously monitor height and trigger updates

Engineering Contradiction:
ImproveUAV-specific service capabilityVSAvoidUE monitoring and update mechanism
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent applies self-service by having the UE autonomously monitor its own height and trigger location update procedures when height thresholds are crossed. The UE independently detects height changes and initiates the necessary network procedures without requiring continuous network intervention or complex manual configuration. This self-service approach reduces the burden on the network while enabling height-based service adaptation.

Inventive Principle:
Principle #25Self-service

3Ease of manufacture

If the network waits for UE to initiate registration, then the registration process is simple, but the network cannot provide timely height-based services

Engineering Contradiction:
Improveregistration process simplicityVSAvoidservice activation delay
Core Design Contradiction:
Ease of manufactureVSLoss of time

Solution Approach 1:

The patent applies feedback by establishing a mechanism where the UE provides feedback to the network about its height state through location update procedures. When the UE detects a height change crossing a threshold, it triggers a location update that feeds this information back to the network. This feedback loop enables the network to receive real-time height information and update NAS configuration parameters accordingly, reducing service activation delay while maintaining registration simplicity.

Inventive Principle:
Principle #23Feedback

Data Source

PatentUS12452825B2Method and apparatus for height-based location update in a wireless communication system
Publication Date: 2025.10.21 LG ELECTRONICS INC
  • US12452825B2 patent drawing
  • US12452825B2 patent drawing
  • US12452825B2 patent drawing

AI summary

A method and apparatus for height-based location update in a wireless communication system is provided. A wireless device receives information on one or more threshold heights between a plurality of height spans. A wireless device monitors a height of the wireless device. A wireless device initiates a tracking area update procedure based on the height of the wireless device being passed the one or more threshold heights.