An Multi-hop Broadcast Protocol for VANETs

Many applications in VANETs rely on reliable broadcast, while broadcasting can led to broadcast storm problem. Probabilistic broadcast is a kind of simple and effective way to suppress broadcast storm. However, a lot of existing probabilistic broadcast protocols for VANETs haven’t taken network division problem in low traffic density into consideration. This paper design and implement an enhanced local connectivity-based broadcast protocol. Simulation results show that the new protocol can achieve better reliability with lower overhead in both dense and sparse traffic scenario.