Priority- and Reservation-based Slicing for Future Vehicular Networks

We consider the wireless network utility maximization problem for various vehicular applications with different priorities. Our approach jointly optimizes bandwidth reservation and immediate slicing allocation based on priorities. The basestation-vehicle association happens in a two-tier heterogeneous wireless network. We first determine a sub-optimal network bandwidth reservation ratio and slicing allocation ratio based on sub-optimal basestation association. To this end, we formulate the problem as a biconcave maximization problem which we solve using an alternative concave search algorithm. Intensive simulations demonstrate that the proposed priority-based reservation and slicing allocation scheme outperforms the conventional slicing allocation schemes in terms of efficiency in network resource utilization.