A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
ON-VEHICLE DEVICE, PORTABLE APPARATUS, AND VEHICLE RADIO COMMUNICATION SYSTEM
PROBLEM TO BE SOLVED: To provide a technology for reducing a risk of relay attack in unlocking a door lock.SOLUTION: An LF transmission unit 32 transmits a request signal and a first measurement signal to a portable apparatus 12. A UHF reception unit 34 receives, from the portable apparatus 12, a first response signal including information on transmission strength of a second measurement signal. The LF transmission unit 32 transmits, to the portable apparatus 12, the second measurement signal whose transmission strength is set on the basis of the information on transmission strength included in the first response signal. The UHF reception unit 34 receives a second response signal transmitted depending on a determination result on the second measurement signal by the portable apparatus 12.SELECTED DRAWING: Figure 3
【課題】ドアロック解錠におけるリレーアタックの危険性を低減する技術を提供する。【解決手段】ＬＦ送信部３２は、リクエスト信号、１回目の測定用信号を携帯機１２に送信する。ＵＨＦ受信部３４は、携帯機１２から、２回目の測定用信号の送信強度に関する情報が含まれた１回目のレスポンス信号を受信する。ＬＦ送信部３２は、１回目のレスポンス信号に含まれた送信強度に関する情報をもとに送信強度を設定した２回目の測定用信号を携帯機１２に送信する。ＵＨＦ受信部３４は、携帯機１２において、２回目の測定用信号に対する判定結果に応じて送信された２回目のレスポンス信号を受信する。【選択図】図３
ON-VEHICLE DEVICE, PORTABLE APPARATUS, AND VEHICLE RADIO COMMUNICATION SYSTEM
PROBLEM TO BE SOLVED: To provide a technology for reducing a risk of relay attack in unlocking a door lock.SOLUTION: An LF transmission unit 32 transmits a request signal and a first measurement signal to a portable apparatus 12. A UHF reception unit 34 receives, from the portable apparatus 12, a first response signal including information on transmission strength of a second measurement signal. The LF transmission unit 32 transmits, to the portable apparatus 12, the second measurement signal whose transmission strength is set on the basis of the information on transmission strength included in the first response signal. The UHF reception unit 34 receives a second response signal transmitted depending on a determination result on the second measurement signal by the portable apparatus 12.SELECTED DRAWING: Figure 3
【課題】ドアロック解錠におけるリレーアタックの危険性を低減する技術を提供する。【解決手段】ＬＦ送信部３２は、リクエスト信号、１回目の測定用信号を携帯機１２に送信する。ＵＨＦ受信部３４は、携帯機１２から、２回目の測定用信号の送信強度に関する情報が含まれた１回目のレスポンス信号を受信する。ＬＦ送信部３２は、１回目のレスポンス信号に含まれた送信強度に関する情報をもとに送信強度を設定した２回目の測定用信号を携帯機１２に送信する。ＵＨＦ受信部３４は、携帯機１２において、２回目の測定用信号に対する判定結果に応じて送信された２回目のレスポンス信号を受信する。【選択図】図３
ON-VEHICLE DEVICE, PORTABLE APPARATUS, AND VEHICLE RADIO COMMUNICATION SYSTEM
車載器、携帯機、及び車両用無線通信システム
HAYASHI NAOKI (author)
2017-06-15
Patent
Electronic Resource
Japanese
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