CALM METHOD AND APPARATUS FOR TRANSMITTING AND RECEIVING SIGNAL USING OPTICAL CAMERA COMMUNICATION IN COMMUNICATION ACCESS FOR LAND MOBILES SYSTEM
A method of operating a roadside unit (RSU) belonging to an intelligent transportation system (ITS) supporting optical camera communication (OCC) comprises the steps of: generating a modulated data signal by modulating data to be transmitted to an onboard unit (OBU) belonging to the ITS by a preset...
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| Sprache: | eng ; kor |
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| Zusammenfassung: | A method of operating a roadside unit (RSU) belonging to an intelligent transportation system (ITS) supporting optical camera communication (OCC) comprises the steps of: generating a modulated data signal by modulating data to be transmitted to an onboard unit (OBU) belonging to the ITS by a preset modulation scheme; and flashing each of light sources included in the RSU in accordance with the modulated data signal to transmit the modulated data signal to the OBU. The modulated data signal further includes information on the preset modulation scheme, information on a modulation frequency, and information on dimming levels of the light sources included in the RSU.
OCC(optical camera communication)를 지원하는 ITS(intelligent transportation system)에 속한 RSU(roadside unit)의 동작 방법에 있어서, 상기 ITS에 속한 OBU(onboard unit)로 전송할 데이터를 미리 설정된 변조 방식에 의해 변조하여 변조된 데이터 신호를 생성하는 단계; 및 상기 변조된 데이터 신호에 따라 RSU에 포함된 광원들 각각을 점멸시켜 상기 변조된 데이터 신호를 상기 OBU로 전송하는 단계를 포함하고, 상기 변조된 데이터 신호는, 상기 미리 설정된 변조 방식에 관한 정보, 변조 주파수에 관한 정보 및 상기 RSU에 포함된 상기 광원들의 디밍 레벨(dimming level)에 관한 정보를 더 포함한다. |
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