Country-Movement Time Learning for Geographic Impossibility Detection

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Solution Overview

Problem

The accuracy of geographic impossibility detection is reduced due to the inclusion of spoofing signals from malicious attackers in training data.

Innovation Solution

A learning apparatus that collects and processes reception signal data to generate user data including movement history and time between countries, learning a statistical value of movement time, and uses this data to determine if a user terminal can be moved between countries, thereby eliminating spoofed data from the training model.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If training data includes spoofing signals from malicious attackers, then the system can detect more position update requests, but the accuracy of geographic impossibility detection is reduced

Engineering Contradiction:
Improvedetection capabilityVSAvoiddetection accuracy
Core Design Contradiction:
ProductivityVSMeasurement precision

Solution Approach 1:

The patent extracts and removes spoofing signals from the training data before using it to create the learning model. By separating legitimate position update requests from malicious spoofing attempts, the system maintains detection capability while improving accuracy. The collection apparatus filters out abnormal patterns that indicate spoofing, ensuring only clean data is used for model training.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The patent converts the harmful spoofing signals into beneficial detection training by analyzing their patterns to identify and filter them out. The system uses the presence of spoofing signals as a teaching moment to improve the learning model's ability to distinguish between legitimate and malicious requests, ultimately enhancing detection accuracy.

Inventive Principle:
Principle #22Blessing in disguise (Convert harm into benefit)

2Measurement precision

If manual confirmation of movement times is performed, then the accuracy of geographic impossibility detection is improved, but the operational complexity and time required increase

Engineering Contradiction:
Improvedetection accuracyVSAvoidoperational simplicity
Core Design Contradiction:
Measurement precisionVSEase of operation

Solution Approach 1:

The learning model performs self-learning by automatically analyzing training data and determining statistical movement times between countries without requiring manual confirmation. The system processes position update requests, calculates movement durations, and builds its own knowledge base, eliminating the need for human intervention while maintaining high detection accuracy.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The system performs preliminary learning and data processing in advance, where the learning model pre-calculates statistical movement times and stores them for future detection. This preliminary action eliminates the need for manual confirmation during actual detection operations, making the system both accurate and operationally simple.

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentUS12452827B2Learning apparatus, determination system, learning method, and non-transitory computer readable medium
Publication Date: 2025.10.21 NEC CORP
  • US12452827B2 patent drawing
  • US12452827B2 patent drawing
  • US12452827B2 patent drawing

AI summary

A learning apparatus according to the present disclosure includes collection means for acquiring, from a collection apparatus configured to collect requests for updating position information of user terminals, a plurality of reception signal data pieces including transmission source countries and reception times of the collected requests for updating the position information. The learning apparatus further includes generation means for generating, for each of the user terminals, user data including a movement history between two countries in one direction and a movement time between the two countries in the one direction based on the acquired plurality of reception signal data pieces. The learning apparatus further includes learning means for learning a statistical value of the movement time between the two countries in the one direction based on the generated user data for each of the user terminals.