A GRASP based heuristic for Deployment Roadside Units in VANETs

In this work we propose a new algorithm, Delta-r-GRASP, for solving the allocation of Roadside Units (RSUs) in a Vehicular Network. Our goal is to find the minimum set of RSUs to meet a Deployment Δ
_ρ2
^ρ1
. The Deployment Δ
_ρ2
^ρ1
is a metric for specifying minimum communication guarantees from the infrastructure supporting the Vehicular Network. We compare our algorithm with a baseline algorithm, Delta-r. Moreover, we compare our results with the optimal value achieved by solver CPLEX. Our results demonstrate that our approach requires up to 85% fewer RSUs to achieve the same deployment efficiency, and our results differ no more than 15% from the optimal values.