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VEHICLE WIRELESS COMMUNICATION SYSTEM, VEHICLE CONTROL DEVICE, AND PORTABLE MACHINE
The present invention improves security with respect to relay attack without complicated processing of a vehicle control device or a portable device. When a portable device (20) approaches at a distance (D1) from any one of multiple low frequency (LF) transmission parts (2-6) positioned in a vehicle (30), a signal reception available area (E1) of the portable device (20) is able to receive only a response request signal from the corresponding LF transmission part. Moreover, when the portable device approaches at a distance shorter than the distance (D1), the area is able to receive a response request signal from another LF transmission part different from the corresponding LF transmission part. Controlling of the vehicle (30) (unlocking of a door, starting of an engine or the like) is prohibited in the portable device (20) in a case that only response request signal is received from one of the LF transmission parts (2-6) during a predetermined time, and a received signal strength indication (RSSI) value of the response request signal is a critical value or more.
[과제] 차량 제어 장치나 휴대기의 처리를 복잡하게 하는 일 없이, 릴레이 어택에 대한 방범성을 향상시킨다. [해결 수단] 휴대기(20)의 신호 수신 가능 에어리어(E1)는, 차량(30)에 복수 마련된 LF 송신부(2∼6)의 어느 하나에 대해, 휴대기(20)가 거리(D1)까지 접근한 때에, 당해 LF 송신부로부터의 응답 요구 신호만을 수신 가능하고, 또한, 거리(D1)보다 짧은 거리까지 접근한 때에, 당해 LF 송신부와 다른 LF 송신부로부터의 응답 요구 신호를 수신 가능한 영역으로 되어 있다. 휴대기(20)에서, 소정 시간 내에, LF 송신부(2∼6) 중 하나로부터의 응답 요구 신호만을 수신하고, 또한, 그 응답 요구 신호의 RSSI값이 임계치 이상인 경우는, 차량(30)의 제어(도어의 시해정이나 엔진의 시동 등)를 금지한다.
VEHICLE WIRELESS COMMUNICATION SYSTEM, VEHICLE CONTROL DEVICE, AND PORTABLE MACHINE
The present invention improves security with respect to relay attack without complicated processing of a vehicle control device or a portable device. When a portable device (20) approaches at a distance (D1) from any one of multiple low frequency (LF) transmission parts (2-6) positioned in a vehicle (30), a signal reception available area (E1) of the portable device (20) is able to receive only a response request signal from the corresponding LF transmission part. Moreover, when the portable device approaches at a distance shorter than the distance (D1), the area is able to receive a response request signal from another LF transmission part different from the corresponding LF transmission part. Controlling of the vehicle (30) (unlocking of a door, starting of an engine or the like) is prohibited in the portable device (20) in a case that only response request signal is received from one of the LF transmission parts (2-6) during a predetermined time, and a received signal strength indication (RSSI) value of the response request signal is a critical value or more.
[과제] 차량 제어 장치나 휴대기의 처리를 복잡하게 하는 일 없이, 릴레이 어택에 대한 방범성을 향상시킨다. [해결 수단] 휴대기(20)의 신호 수신 가능 에어리어(E1)는, 차량(30)에 복수 마련된 LF 송신부(2∼6)의 어느 하나에 대해, 휴대기(20)가 거리(D1)까지 접근한 때에, 당해 LF 송신부로부터의 응답 요구 신호만을 수신 가능하고, 또한, 거리(D1)보다 짧은 거리까지 접근한 때에, 당해 LF 송신부와 다른 LF 송신부로부터의 응답 요구 신호를 수신 가능한 영역으로 되어 있다. 휴대기(20)에서, 소정 시간 내에, LF 송신부(2∼6) 중 하나로부터의 응답 요구 신호만을 수신하고, 또한, 그 응답 요구 신호의 RSSI값이 임계치 이상인 경우는, 차량(30)의 제어(도어의 시해정이나 엔진의 시동 등)를 금지한다.
VEHICLE WIRELESS COMMUNICATION SYSTEM, VEHICLE CONTROL DEVICE, AND PORTABLE MACHINE
차량 무선 통신 시스템, 차량 제어 장치, 및 휴대기
HAMADA KAZUYA (author) / INAGUMA TAKAHIRO (author) / TOMITA YOSUKE (author)
2016-09-21
Patent
Electronic Resource
Korean
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