BLE-based Relative Positioning in the Context of Targeted Bike-to-Everything (B2X) Communication

This paper investigates the feasibility of BLE-based relative positioning for targeted B2X communication. Using Angle of Arrival (AoA) together with BLE communication allows bicycles to determine the location of surrounding devices, enabling focused messages instead of constant broadcasts, potentially improving safety and awareness in urban traffic scenarios. This research builds upon existing projects like E-bell, which focuses on general communication in cycling environments. The paper explores the results of the investigations into antenna placement with respect to obstacles and analyzes how varying bicycle speeds influence AoA estimation effectiveness within a B2X communication system. It shows that obstacles in the environment greatly impact AoA accuracy.