A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
PORTABLE DEVICE, ON-VEHICLE DEVICE, AND REMOTE KEYLESS ENTRY SYSTEM
To improve the safety of a remote keyless system.SOLUTION: A portable device according to an embodiment includes: a portable device receiver equipped with a 3-axis antenna and receiving a request signal including a measurement signal from an on-vehicle device; a portable device transmitter transmitting an answer signal to the on-vehicle device; and a portable device control unit controlling the portable device receiver and the portable device transmitter. The portable device control unit includes a received signal strength calculation unit that calculates the received signal strength of each axis of the signal for measurement, and a relay attack determination unit that determines whether a relay attack has taken place based on the ratio of the received signal strength of each axis of the signal for measurement.SELECTED DRAWING: Figure 5
【課題】 リモートキーレスシステムの安全性を向上させる。【解決手段】 一実施形態に係る携帯機は、３軸アンテナを備え、車載器から測定用信号を含むリクエスト信号を受信する携帯機受信部と、前記車載器にアンサー信号を送信する携帯機送信部と、前記携帯機受信部及び前記携帯機送信部を制御する携帯機制御部と、を備え、前記携帯機制御部は、前記測定用信号の軸ごとの受信信号強度を算出する受信信号強度算出部と、前記測定用信号の前記軸ごとの前記受信信号強度の比率に基づいて、リレーアタックが行われたか判定するリレーアタック判定部と、を備える。【選択図】 図５
PORTABLE DEVICE, ON-VEHICLE DEVICE, AND REMOTE KEYLESS ENTRY SYSTEM
To improve the safety of a remote keyless system.SOLUTION: A portable device according to an embodiment includes: a portable device receiver equipped with a 3-axis antenna and receiving a request signal including a measurement signal from an on-vehicle device; a portable device transmitter transmitting an answer signal to the on-vehicle device; and a portable device control unit controlling the portable device receiver and the portable device transmitter. The portable device control unit includes a received signal strength calculation unit that calculates the received signal strength of each axis of the signal for measurement, and a relay attack determination unit that determines whether a relay attack has taken place based on the ratio of the received signal strength of each axis of the signal for measurement.SELECTED DRAWING: Figure 5
【課題】 リモートキーレスシステムの安全性を向上させる。【解決手段】 一実施形態に係る携帯機は、３軸アンテナを備え、車載器から測定用信号を含むリクエスト信号を受信する携帯機受信部と、前記車載器にアンサー信号を送信する携帯機送信部と、前記携帯機受信部及び前記携帯機送信部を制御する携帯機制御部と、を備え、前記携帯機制御部は、前記測定用信号の軸ごとの受信信号強度を算出する受信信号強度算出部と、前記測定用信号の前記軸ごとの前記受信信号強度の比率に基づいて、リレーアタックが行われたか判定するリレーアタック判定部と、を備える。【選択図】 図５
PORTABLE DEVICE, ON-VEHICLE DEVICE, AND REMOTE KEYLESS ENTRY SYSTEM
携帯機、車載器、及びリモートキーレスエントリーシステム
MIYAZAWA AKIRA (author)
2021-07-26
Patent
Electronic Resource
Japanese
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