Terminal Conditional Handover Indication Handling

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Solution Overview

Problem

Current handover procedures in communication technologies lack a defined handling mechanism when a terminal receives indication information from a source cell during a conditional handover, potentially impacting the execution of the handover process.

Innovation Solution

A handover method for a terminal that includes ignoring, continuing, or stopping the conditional handover based on the received indication information from the source cell, or performing an operation indicated by the information, thereby defining the terminal's actions to ensure complete signaling and improve the handover process.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conditional handover procedure is introduced to avoid handover failure, then handover reliability is improved, but the complexity of handover procedure increases

Engineering Contradiction:
Improvehandover reliabilityVSAvoidhandover procedure complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The handover procedure is segmented into distinct phases: configuration reception phase, indication information reception phase, and handover execution phase. The patent divides the complex conditional handover process into manageable segments, each with specific handling rules for indication information, making the overall procedure more manageable and less complex despite maintaining high reliability.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent introduces dynamic handling mechanisms where the terminal can adaptively respond to indication information based on current handover status. The terminal dynamically adjusts its behavior by ignoring, continuing, stopping, or modifying handover operations based on real-time indications from the source cell, making the procedure flexible and responsive without requiring predetermined complex rules for all scenarios.

Inventive Principle:
Principle #15Dynamics

2Loss of information

If the terminal receives reconfiguration or handover command during conditional handover, then signaling completeness is improved, but the handling ambiguity increases

Engineering Contradiction:
Improvesignaling completenessVSAvoidhandling clarity
Core Design Contradiction:
Loss of informationVSEase of operation

Solution Approach 1:

The patent applies preliminary action by pre-defining handling rules for various types of indication information before the actual handover execution. The terminal is equipped with predetermined guidance on how to process reconfiguration, removal, and normal handover commands during conditional handover, eliminating ambiguity at the moment of reception and simplifying the operational decision-making process.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The patent implements feedback mechanisms where the terminal receives and processes indication information from the source cell, then adjusts its handover behavior accordingly. This feedback loop ensures that signaling is complete and accounted for, while the structured feedback handling rules maintain operational clarity by providing clear guidance on how to respond to each type of indication.

Inventive Principle:
Principle #23Feedback

Data Source

PatentUS20240388976A1Handover method and terminal
Publication Date: 2024.11.21 VIVO MOBILE COMM CO LTD
  • US20240388976A1 patent drawing
  • US20240388976A1 patent drawing

AI summary

A handover method and a terminal are provided. The method includes: upon receiving indication information from a source cell during a first conditional handover, performing, by a terminal, at least one of the following operations: ignoring the indication information; continuing execution of the first conditional handover; stopping the first conditional handover; and performing, according to the indication information, an operation indicated by the indication information.