Handover Interruption Reporting for DAPS and Conditional Handover

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Solution Overview

Problem

Existing wireless communication systems face challenges in accurately measuring and optimizing handover interruptions during dual active protocol stack (DAPS) and conditional handover (CHO) procedures, which affect service continuity and network performance.

Innovation Solution

Implementing techniques for detecting and reporting interruption parameters, such as duration and starting time of handover interruptions, to facilitate better resource configuration and optimization in DAPS and CHO procedures, using methods like MDT signaling to minimize additional signaling overhead.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If interruption parameters are reported for DAPS and CHO procedures, then handover robustness and resource allocation efficiency are improved, but signaling overhead increases

Engineering Contradiction:

Improvehandover robustnessVSAvoidsignaling overhead

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent extracts only the essential interruption parameters (duration and starting time) from the complete handover measurement data, rather than reporting all handover details. This selective extraction reduces signaling overhead while maintaining the core information needed for reliability assessment and resource allocation optimization.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent implements preliminary configuration of measurement and reporting conditions through MDT (Minimization of Drive Tests) signaling before actual handover occurs. By pre-configuring which parameters to measure and under what conditions to report, the system avoids unnecessary signaling during handover while ensuring critical reliability data is captured.

Inventive Principle:

Principle #10Preliminary action

2Productivity

If interruption parameters are measured and reported, then resource allocation efficiency is improved, but measurement and detection complexity increases

Engineering Contradiction:

Improveresource allocation efficiencyVSAvoidmeasurement complexity

Core Design Contradiction:

ProductivityVSDifficulty of detecting and measuring

Solution Approach 1:

The patent enables the UE (User Equipment) to autonomously measure and detect interruption parameters during handover without requiring complex external measurement systems. The UE self-monitors its own handover experience and reports relevant parameters, simplifying the measurement architecture while providing data for resource allocation optimization.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The patent designs the interruption parameter reporting mechanism to serve multiple functions: it provides data for reliability assessment, enables resource allocation optimization, and supports network performance analysis. This multi-functionality justifies the measurement complexity by delivering value across multiple domains.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS12563459B2Interruption measurement for dual active protocol stack handover and conditional handover

Publication Date: 2026.02.24 QUALCOMM INC

AI summary

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment may detect an interruption trigger to initiate reporting of an interruption parameter associated with a dual active protocol stack handover procedure or a conditional handover procedure; and report the interruption parameter to a base station based at least in part on detecting the interruption trigger, wherein the interruption parameter indicates at least one of a duration of handover interruption or a starting time of handover interruption. Numerous other aspects are provided.