Study of Relay Timing Control Method for Inter-Vehicle Information Sharing using 920 MHz Band Private LoRa

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  • 920MHz帯Private LoRaを用いた車両間情報共有のための中継タイミング制御手法の検討

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Abstract

Traffic congestion is one of the major social problems due to the concentration of population in urban areas and the increase of automobile use. The real-time traffic information sharing system using vehicle-to-vehicle (V2V) communication is useful for drivers to avoid traffic jams. However, V2V communication in urban areas is unstable because some vehicles may not receive data due to the obstacles such as building. In this paper, we propose a data relay transmission method using the Private LoRa, which is unlicensed, flexible, and capable of long-distance transmission. To share data among vehicles over a wide area while suppressing data transmission collisions, we introduce the timing control method based on received signal strength (RSS) and location information. The experimental results show that the proposed method is effective in deploying data over a wide area.

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