Reliable Message Delivery Scheme to Transmit Safety-Message in Heterogeneous VANETs

Recently, various network researches related on self-driving connected cars is studied to support enhanced network performance. These researches have focused on vehicle to vehicle (V2V) technology and vehicle to infrastructure (V2I) technology based on IEEE 802.11p standard. However, in networks employing IEEE 802.11p only, the broadcast storm problem of flooding message and the disconnection problem of network at high and low vehicle densities, respectively. To overcome these problems, this paper proposes dual-interface based reliable message delivery scheme to transmit safety message and cooperative control message in heterogeneous vehicle environments, which combine IEEE 802.11p-based multi-hop VANET and LTE-based cellular VANET. The proposed scheme is progressed by a stable communication network selection (SCNS) scheme which is able to disseminate safety message and cooperative control message with stable reliability.