To provide an unauthorized communication prevention system and an unauthorized communication prevention method, capable of ensuring accuracy of determination that communication is unauthorized communication.SOLUTION: An unauthorized communication prevention system 19 obtains propagation characteristics of a radio wave Si transmitted through Bluetooth communication to calculate a measured value Dx according to a distance between communication devices from the propagation characteristics. A determination processing unit 44 determines whether communication between the communication devices is authorized or unauthorized by comparing the measured value Dx and a specified value Dk. When a confirmation unit 45 detects a determination result that the communication is unauthorized communication a plurality of times (continuous detection), it determines the communication as unauthorized communication. When it is determined that the communication is unauthorized communication, a control unit 46 takes measures against the unauthorized communication.SELECTED DRAWING: Figure 3
【課題】通信が不正通信であることの判定精度の確保を可能にした不正通信防止システム及び不正通信防止方法を提供する。【解決手段】不正通信防止システム19は、ブルートゥース通信を通じて送信される電波Siの伝搬特性を求め、その伝搬特性から、通信機間の距離に準じた測定値Dxを演算する。判定処理部44は、測定値Dxと規定値Dkとを比較することにより、通信機間の通信の正規/不正を判定する。確認部45は、通信が不正通信であるという判定結果を複数回検出(連続検出)すると、通信を不正通信と判定する。制御部46は、通信が不正通信と判定された場合、その不正通信に対する対処を実行する。【選択図】図3
UNAUTHORIZED COMMUNICATION PREVENTION SYSTEM AND UNAUTHORIZED COMMUNICATION PREVENTION METHOD
不正通信防止システム及び不正通信防止方法
2020-04-16
Patent
Electronic Resource
Japanese
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