Cooperative Perception Realized by Millimeter-Wave V2V for Safe Automated Driving

It becomes common understanding that Vehicular-to- Vehicular (V2V) and Vehicular-to-Everything (V2X) communications improve safeness of automated driving. In particular, cooperative perception realized by sharing sensor data between vehicles and Road Side Units (RSUs) has potential to solve blocking problem of ego perspective sensors. However, it is still unclear that how much data rate is needed to ensure safe automated driving by extended sensor sharing. Based on the background, this paper derives required data rate on V2V to ensure safe automated driving in terms of velocity of vehicle and inter-vehicle distance in an overtaking driving environment. In the next step, the paper calculates achievable outage data rate of V2V with different frequency bands of 5, 30 and 60 GHz to derive maximum allowable velocity of vehicle to ensure safe automated driving. As a result, it is found that 30 and 60 GHz V2V allow 63 km/h and 84 km/h maximum velocities respectively while 5 GHz allows only 50 km/h for safe automated driving with inter-vehicle distance of 20 m. Therefore, millimeter-wave V2V is needed to realize safe automated driving in the future.