Communication Session Handover with Interrupt-Resume Packet Continuity

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Solution Overview

Problem

Handover procedures in communication sessions can cause interruptions in data packet transfer, leading to potential loss of packets, especially in ultra-reliable and low-latency applications like Industrial Internet of Things (IIoT), where delaying the handover to avoid packet loss can exceed maximum latency requirements.

Innovation Solution

The apparatus initiates a handover process, interrupts it when a transceiver operation is needed, allows the transceiver to perform the operation using the existing communication session, and resumes the handover when the operation is completed, thereby ensuring uninterrupted packet delivery.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the handover process is delayed to avoid data packet loss, then reliability is improved, but latency increases beyond maximum requirements

Engineering Contradiction:

Improvedata packet delivery reliabilityVSAvoidhandover latency

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The system performs preliminary actions by initiating the handover process early while maintaining the communication session with the first access node. This allows the handover preparation to occur in advance without interrupting ongoing transceiver operations, so that when the handover is finally executed, it can be completed quickly without causing packet loss or exceeding latency requirements.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system dynamically adjusts the handover execution timing based on transceiver operation status. The handover process is interrupted when transceiver operations are detected and resumed when they are completed, creating a flexible, adaptive handover mechanism that optimizes both reliability and latency based on real-time system conditions.

Inventive Principle:

Principle #15Dynamics

2Reliability

If the handover process is interrupted to perform transceiver operations, then data packet loss is minimized, but handover completion time increases

Engineering Contradiction:

Improvedata packet deliveryVSAvoidhandover process duration

Core Design Contradiction:

ReliabilityVSDuration of action of moving object

Solution Approach 1:

The system implements periodic checking of transceiver operation status during the handover process. By periodically monitoring whether transceiver operations are currently executing and temporarily interrupting handover only when necessary, the system ensures data packet delivery reliability while minimizing the total handover duration through efficient, non-intrusive interruption-resume cycles.

Inventive Principle:

Principle #19Periodic action

Data Source

PatentUS12483961B2Handover of a communication session

Publication Date: 2025.11.25 NOKIA TECHNOLOGIES OY

AI summary

An apparatus, method and computer program product for: initiating a handover process for moving the communication session from a first access node to a second access node, interrupting the handover process in response to determining that at least one operation is to be performed by a transceiver, causing the transceiver to perform the at least one operation using the communication session with the first access node, and resuming the handover process in response to determining that the at least one operation is completed.