UNAUTHORIZED COMMUNICATION ESTABLISHMENT PREVENTION SYSTEM

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UNAUTHORIZED COMMUNICATION ESTABLISHMENT PREVENTION SYSTEM

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OYA YOSHIYUKI / MORI MEGUMI / IWASHITA AKITOSHI / UCHIKI KAZUTERU

PROBLEM TO BE SOLVED: To provide an unauthorized communication establishment prevention system capable of accurately determining unauthorized communication.SOLUTION: An unauthorized communication establishment prevention system performs radio communication using a radio wave having the same frequency band between a collation ECU and an electronic key to determine propriety of communication in the radio communication. The unauthorized communication establishment prevention system divides a transmission radio wave Sa and a reply radio wave Sb; transmits the divided transmission radio wave Sa as a signal strength measurement signal; transmits the divided reply radio wave Sb as a signal strength measurement signal; transmits a measurement response signal Sk in response to each of the signal strength measurement signals; measures first signal strength, reception signal strength of the signal strength measurement signal; measures second signal strength, reception signal strength of the measurement response signal; and determines propriety of the radio communication on the basis of the first signal strength and second signal strength.SELECTED DRAWING: Figure 2

【課題】不正通信を正確に判定することのできる通信不正成立防止システムを提供する。【解決手段】通信不正成立防止システムは、照合ＥＣＵと電子キーとの間で同一周波数帯の電波で無線通信を行い、当該無線通信における通信の正否を判定する。通信不正成立防止システムは、送信電波Ｓａ及び返信電波Ｓｂを分割し、分割した送信電波Ｓａを信号強度測定信号として送信し、分割した返信電波Ｓｂを信号強度測定信号として送信し、信号強度測定信号に対して測定応答信号Ｓｋをそれぞれ送信し、信号強度測定信号の受信信号強度である第１信号強度を測定し、測定応答信号の受信信号強度である第２信号強度を測定し、第１信号強度と第２信号強度とに基づいて無線通信の正否を判定する。【選択図】図２

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Title :

UNAUTHORIZED COMMUNICATION ESTABLISHMENT PREVENTION SYSTEM

Additional title:

通信不正成立防止システム

Contributors:

OYA YOSHIYUKI (author) / MORI MEGUMI (author) / IWASHITA AKITOSHI (author) / UCHIKI KAZUTERU (author)

Publication date :

2018-07-05

Type of media :

Patent

Type of material :

Electronic Resource

Language :

Japanese

Classification :

IPC:

H04Q Wähltechnik , SELECTING / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / E05B LOCKS , Schlösser