A Novel Road Topology-aware Routing in VANETs

摘要

Path connectivity may change due to node mobility in Vehicular Ad hoc Networks (VANETs). When the current routing path is disconnected, finding another connected routing path quickly is important for excellent routing performance in VANETs. In this paper, we propose a novel road topology-aware routing (RTR) protocol for VANETs. RTR establishes two junction-disjoint paths in order to utilize connected routing paths sufficiently. RTR alternately transfers data packets through each established routing path and dynamically changes the routing path based on the connectivity of the current path. Simulation results have shown that the proposed RTR improves the performance compared to single path routing GPSR.