Dynamic Scheduling in NR-V2X Mode 2: Probability of Successful Packet Delivery and Packet Inter-Reception

This work provides the first set of analytical tools to evaluate the performance of the dynamic scheduling scheme introduced in the 5G New Radio Vehicle-to-Everything standard to support direct vehicle-to-vehicle communications. It determines the probability of correctly receiving a packet as a function of the distance between the transmitting and the receiving vehicle, and statistically characterizes the time lag between the successful reception of two consecutive packets belonging to the same service flow. The analysis encompasses all the causes of packet losses, ranging from transmission impairments due to the hostile vehicular communication environment, to collisions and half-duplex radio limitations. Rigorous simulations validate the approach, demonstrating its accuracy and disclosing the influence of several parameters on system performance.