Abstract
The vehicular networks have recently attracted significant attention with driverless car development. It is challenging to deliver the messages in a vehicular ad-hoc networks which are lack of instant end-to-end path, high vehicle mobility and short encounter time. With these features, VANET gets low packet delivery ratio (PDR) characteristic. The key idea we adopted to solve this problem is by trying to exploit the residual capacity for packet replication. But it also makes another problem that wastes the capacity to transmit a lot of redundant packets if the replication scheme is not well designed. We proposed a scheme called DREAMER (Destination-based Replication by Efficient AssignMent and Early redundant packet Removal). Instead of transmitting the bigger size of data packets, we forward the smaller size of control packets. Moreover, we assign and reallocate replication number by different cases. The simulation results show that our scheme can efficiently enhance PDR and improve the network efficiency.