Improved Store-Carry-Forward Scheme for Information Dissemination in Unfavorable Vehicular Distribution

Vehicular network assisting cooperative driving have gained much attention because they offer wide range of new possibilities to the modern intelligent transportation system (ITS). To enhance safety-related applications, vehicles conventionally broadcast warning message as soon as it finds hazardous situation. However, research work regarding data packet routing usually eliminates the effect of adverse density condition, i.e., density values that significantly varies from the average values, in spite such variations are quite common in urban environment. Conventionally, a store-and-carry forward scheme was utilized to handle such fragmented network issue, but with a large delay. In the work, a novel improved store-carry-forward scheme to overcome partitioned network is proposed. The simulation results shows that the modified scheme significantly reduces delay and improves delivery rate in low traffic density condition.