Maximum Reuse Distance Scheduling for Cellular-V2X Sidelink Mode 3

Vehicle-to-everything (V2X) communication will be the key technology to improve safety on the road. In particular, the cooperative awareness service will give vehicles the capacity of being aware of the neighborhood through the periodic dissemination of beacon messages, carrying mobility information. Applications like these need a wireless technology able to provide high reliability and low latency. In this context, Cellular-V2X based on long term evolution (LTE) Release 14 is a promising candidate. Objective of this work is to focus on LTE Sidelink mode 3, where resources reserved to direct links are managed by the network and to propose a resource scheduling algorithm based on the knowledge, with different levels of accuracy, of the positions of the vehicles at the network side. Through simulations, carried out in realistic highway and urban scenarios, we compare the proposed solution with a benchmark algorithm based on the concept of reuse distance and we demonstrate that the new solution, other than always offering the highest performance in terms of packet reception ratio and latency, does not require the fine tuning of any parameter.