Multi-criteria-based relay election for Data Dissemination in urban VANET

Data dissemination in Vehicular Ad-Hoc Networks (VANETs) is used as a tool for safety applications. In the real world, urban environment can be faced to some inherent VANET characteristics such as highly dynamic topology, diverse network densities, the changing speed of the vehicles, the noise, the obstacles which considerably affect the communication quality and make data dissemination fail in spreading urgent information over the network. To this effect, this work proposes a Multi-Criteria based Relay Election Protocol for Data Dissemination in urban VANETs (MCRE-DDP) where the most relevant relay node is elected based on several parameters like Signal to Noise Ratio (SNR), vehicle speed, distance between sender and receiver to determine the nodes quality and its ability to successfully relay the dissemination message because relevant relays prevent the communication system from multiple sending and guaranty the suitable data relaying as far as the boundaries of the area of interest. Simulation results show that MCRE-DDP performs data dissemination more efficiently than its peers in terms of Dissemination Speed, link load and redundancy ratio.