Position-Aware Handover Lists for Mobile Relaying Systems

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Solution Overview

Problem

User Equipment (UE) in mobile communication devices, such as buses or trains, face challenges in identifying suitable communication devices to connect to when terminating a connection, especially due to positional changes, leading to decreased reception and difficulty in establishing new connections.

Innovation Solution

A relaying system improves the handover list for UE by determining and transmitting a tailored handover list based on its position, destination, communication capabilities, and desired parameters, ensuring seamless connection transitions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a mobile communication device (bus, train, vehicle) acts as a relaying system, then the UE can maintain connection while moving, but the UE faces challenges in identifying suitable communication devices to connect to when terminating the connection due to positional changes

Engineering Contradiction:
Improveconnection stabilityVSAvoidhandover identification
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The system determines a handover list in advance based on the relaying system's current position and transmits it to the UE before connection termination is needed. This preliminary preparation allows the UE to have suitable handover targets ready when the connection needs to be terminated, resolving the challenge of identifying suitable communication devices at the moment of disconnection.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The network acts as an intermediary by determining and transmitting the handover list from the relaying system to the UE. This intermediary mechanism provides the UE with pre-identified suitable communication devices, eliminating the need for the UE to independently identify handover targets during connection termination.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Adaptability or versatility

If the UE receives a generic handover list, then it has potential connection options, but it lacks position-specific optimization for seamless handover

Engineering Contradiction:
Improvehandover list applicabilityVSAvoidhandover efficiency
Core Design Contradiction:
Adaptability or versatilityVSProductivity

Solution Approach 1:

The handover list is determined specifically for the current position of the relaying system, making the connection options locally optimized for that position. This position-specific approach ensures that the handover list contains communication devices that are actually suitable for handover at that location, improving both applicability and efficiency.

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The handover list is dynamically determined based on the changing position of the relaying system. As the relaying system moves to different positions, new handover lists are determined and transmitted to the UE, ensuring that the handover options remain relevant and effective throughout the movement.

Inventive Principle:
Principle #15Dynamics

3Adaptability or versatility

If the system determines handover lists for all possible positions, then the UE has comprehensive handover options, but it generates unnecessary communication overhead for non-required positions

Engineering Contradiction:
Improvehandover coverageVSAvoidcommunication overhead
Core Design Contradiction:
Adaptability or versatilityVSLoss of energy

Solution Approach 1:

The system extracts and transmits only the position-specific handover list that is currently needed, rather than transmitting all possible handover lists for all potential positions. This selective approach reduces communication overhead while still providing the UE with appropriate handover options for its current and near-future positions.

Inventive Principle:
Principle #2Taking out (Extraction)

Data Source

PatentEP4167634B1Methods for a relaying system for improving a handover list, method for a cell, apparatus, vehicle and computer program
Publication Date: 2025.09.17 VOLKSWAGEN AG
  • EP4167634B1 patent drawingFigure 1~2
  • EP4167634B1 patent drawingFigure 3~4

AI summary

Embodiments relate to a method 100 for a relaying system. The method 100 for improving a handover list for user equipment connected to the relaying system comprises obtaining 110 a plurality of handover lists and obtaining 120 a position of the relaying system. Further, the method 100 comprises determining 130 a handover list of the plurality of handover lists based on the position of the relaying system and transmitting 140 the determined handover list to the user equipment.