An Acute Position Based VANET Routing Protocol
Vehicular Ad-hoc Networks (VANETs) is highly dynamic by nature because in VANETs, nodes are highly mobile. And the survey shows that the position based routing protocol is best suitable for VANETs because position based routing approach can deal with highly mobile nodes. In this paper, we propose an acute position based routing protocol (APR) for vehicular ad hoc networks (VANETs) which performs better when the number of vehicle increases on the road as compare to GPSR. In this, we assume that all vehicles know their own position and have Global Positioning System (GPS). Our protocol uses restricted greedy to transfer a data packet and for recovery carry and forwarding strategy will used. We consider both the vehicle-to-vehicle (V2V) and vehicle-to-infrastructure (V2I) communication. All the intersection point on the road have a RSU (Road Side Unit) which takes all the decisions that on which path the data packet will flow. If there is no appropriate path then the RSUs will store the data packet until they find the appropriate path to transfer the data packet. This protocol is suitable for city scenario. Simulation is done in NS-2.35 and compared APR with GPSR.