Neighbor Cache Explore Routing Protocol for VANET based on Trajectory Prediction

Information Centric Networking (ICN) has been proposed to solve the problem of mobility in Vehicular Ad hoc network (VANET).By using content name as the addressing key instead of IP address to obtain data from adjacent vehicles, ICN works better than traditional IP networks under high topology dynamics and intermittent connectivity. In this work, we for the first time propose Neighbor Cache Explore Routing based on Trajectory Prediction (PNCE), a content driven routing protocol which gives priority to inquiring the content in neighbors' cache. In PNCE, vehicles periodically notify neighbors of their local cache information and maintain a local table containing neighbors' cached contents, which contributes to select the nearest vehicle from the requester for forwarding decision.Simulation results show that PNCE can significantly improve network performance in terms of packet delivery ratio, delay and Cache hit ratio, and maintain good scalability and strong robustness.