Inter-RAT Handover SHR Recording for Accurate Mobility Reporting

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Solution Overview

Problem

Existing communication systems lack a method for recording and reporting a successful handover report (SHR) when a terminal performs handover between cells of different radio access technologies (RATs).

Innovation Solution

A method and apparatus for recording an SHR by a terminal in a first variable upon detecting an SHR trigger event during a handover between cells of different RATs, and a network device receiving the SHR from the terminal.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the terminal records SHR in existing variables designed for same-RAT handovers, then the recording capability for inter-RAT handovers is improved, but the variable structure and data management become incompatible

Engineering Contradiction:

ImproveSHR recording capabilityVSAvoidvariable structure

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent divides the SHR recording functionality into separate variables: one variable for same-RAT handover reports and another variable for inter-RAT handover reports. This segmentation allows each variable to be optimized for its specific handover type without structural conflicts, while both can coexist in the terminal device.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent creates a universal SHR recording mechanism that handles both same-RAT and inter-RAT handovers through a unified management approach. The terminal device can selectively activate appropriate variables based on the handover type, making the system versatile across different RAT scenarios.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Adaptability or versatility

If the terminal reports SHR for inter-RAT handovers using existing reporting mechanisms, then the reporting function is improved, but the reporting accuracy and reliability deteriorate due to mechanism incompatibility

Engineering Contradiction:

ImproveSHR reporting functionVSAvoidreporting accuracy

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The patent segments the SHR reporting function into distinct reporting mechanisms: one for same-RAT handovers and another for inter-RAT handovers. This ensures that each reporting mechanism is tailored to the specific requirements of its handover type, maintaining high reliability and accuracy for both scenarios.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent changes the reporting parameters and formats based on the handover type. For inter-RAT handovers, specific parameters are adjusted to accommodate the unique characteristics of cross-RAT mobility, ensuring accurate and reliable reporting without compromising same-RAT reporting integrity.

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentEP4683384A1Successful handover report (SHR) recording methods, apparatuses, device and storage medium

Publication Date: 2026.01.21 BEIJING XIAOMI MOBILE SOFTWARE CO LTD

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AI summary

Provided in the present disclosure are SHR recording methods, apparatuses, a device and a storage medium. A method comprises: when a terminal has successfully completed handover between different radio access type (RAT) cells, in response to detecting an SHR trigger event, the terminal records an SHR in a first variable. The methods disclosed in the present disclosure may achieve successful recording and reporting of an SHR during handover of different RAT cells.