Real-time Wireless Channel Monitoring Cooperated with Roadside Sensors for Autonomous Mobility Assistance System (AMAS)

Research and development (R&D) for an autonomous and automatic mobility assistance system (AMAS) in cooperation with information communication technology (ICT) is undergoing. The AMAS method which efficiently updates and distributes the road information collected by mobility and roadside sensors to a dynamic map (DM) enables automatic mobility control with high reliability and accuracy. In order to verify the renewal and dispersion of DM, we have developed a wireless electronic traffic mirror (WETM) that acquires road information, recognizes road objects and transfers recognition information with a wireless communication system. Additionally, to meet the safety requirements, the AMAS must provide the wireless connection best suited for mobility. In order to provide optimum wireless connectivity, real-time wireless channel monitoring, which measures the quality of wireless channels with interference, is an important task in the AMAS. In this paper, the real-time wireless channel monitoring system in cooperation with the developed WETM is introduced, and in order to clarify the reason why the quality of the road was changed, clear evidence of the visibility of the road situation is clarified.