The Position-Aware Routing Protocol for Pre-handoff on OLSR in Vehicular Networks

We propose a position-aware routing protocol for pre-handoff on OLSR (POS-OLSR) in Vehicular Ad-hoc Networks to minimize data loss when routing handoff. We develop a function mapping node's position to link metric and calculated the best route by minimize the path metric. To fitting with position-aware and pre-handoff method, we improved OLSR protocol with a novel MPR selected algorithm and protocol messages. Simulation results indicate that POS-OLSR performs better in Packet Delivery Ratio than traditional OLSR with different of nodes density, nodes moving speed and traffic load.