IDVR-PFM: A connectivity-oriented VANET routing protocol in urban scenarios

It is the challenging issue to find a reliable and efficient routing path in intermittent VANET due to high vehicle mobility and frequent link breakage. Network connectivity is the key factor as it greatly affects the VANET performance. Motivated by this, an intersection dispatch-based VANET protocol with parked vehicles forwarding mechanism (IDVR-PFM) was proposed in this paper. The connection probability of the farthest nodes was used to estimate the connectivity of branch road, and then the FDM could choose the best path based on the latency information. Then the parked cars were utilized to participate in the forwarding process, which strengthen the area connectivity and connection probability effectively. The results of simulations reveal that IDVR-PFM has better performance in terms of packet delivery ratio and end-to-end delay than the existing ad hoc routing protocols.