An Enhanced Map-Based Location Service for VANET

Position-based routing is a promising technology for VANET. And location service is the fundamental component for the success of position-based routing. A map-based location service algorithm is proposed in this paper. It uses a predesigned hash function to map a node to a certain location, where location servers are recruited. Hence any node in the network can find location servers of others, then obtain the position of others. This kind of server deployment scheme makes a distributed location service in the network, the system is subsequently more convenient and robust. Simulation results exhibit that the proposed algorithm improves the query success ratio and reduces the network traffic when compared with state of the art location service scheme. Keywords-location information; position-based routing; VANET; oocation update; distributed