IoT Terminal APN Disconnection With Voice-Channel Anomaly Reporting

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Solution Overview

Problem

IoT devices can be maliciously used as jump servers for virus transmission, causing secondary damage, and users may not notice anomalies due to infrequent checking, making it difficult to notify them of operational issues.

Innovation Solution

An information terminal disconnects data communication by deleting APN settings upon anomaly detection and transmits operational status via voice communication, while a processing device sends a deletion command and notifies users based on operational information received over voice communication.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-affected harmful factors

If communication function is stopped to prevent secondary damage from virus transmission, then security is improved, but user notification capability deteriorates

Engineering Contradiction:

Improvesecondary damage from virus transmissionVSAvoiduser notification capability

Core Design Contradiction:

Object-affected harmful factorsVSLoss of information

Solution Approach 1:

The communication network is segmented into data communication network and voice communication network. When an anomaly is detected, only the data communication network is disconnected by deleting APN settings, while the voice communication network remains operational to maintain notification capability. This segmentation allows selective disconnection of harmful communication paths while preserving essential notification functions.

Inventive Principle:

Principle #1Segmentation

2Object-affected harmful factors

If data communication is disconnected by deleting APN setting to prevent virus spreading, then security is improved, but operational status notification deteriorates

Engineering Contradiction:

Improvevirus spreading through data communicationVSAvoidoperational status notification to user

Core Design Contradiction:

Object-affected harmful factorsVSLoss of information

Solution Approach 1:

The voice communication network serves as an intermediary channel for notification. When data communication is disconnected, the system uses the voice communication network (which remains operational) to transmit operational information to the user. This intermediary approach ensures that notification capability is maintained through an alternative communication path that is not affected by the data communication disconnection.

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentEP4664869A1Information terminal, information processing device, information processing method, and program

Publication Date: 2025.12.17 PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD

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AI summary

An information terminal according to an aspect of the present disclosure is an information terminal that performs communication over a cellular communication network. The information terminal includes: a communication disconnector (230) that disconnects communication that is performed over a data communication network in the cellular communication network by deleting Access Point Name (APN) settings, when an anomaly of the information terminal is detected; and a communication controller (240) that transmits operational information indicating an operational status of the information terminal over a voice communication network in the cellular communication network, after the communication over the data communication network is disconnected.