Abstract
In vehicular heterogeneous networks, the transmission of safety messages often has a phenomenon of redundant propagation. It may cause broadcast storms due to redundant propagation, resulting in poor message transmission performance. For the problem of redundant communication of safety messages, this paper proposes an edge-based non-redundant broadcast protocol (ECNR). The protocol uses fuzzy logic to select some vehicles in the communication range of roadside units (RSUs) as edge vehicles (EVs). The on-board unit (OBU) and the roadside unit (RSUs) installed on the edge vehicle are responsible for handling safety messages. Edge vehicles can effectively transmit safety messages within their communication range by utilizing the topology of the local network, thereby reducing redundant transmission of messages. The simulation results show that the protocol has a slight increase of network overhead, but it has a better performance in end-to-end transmission delay and message broadcast success rate.
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