CAGFP: Context Aware Geocast Forwarding Protocol for Inter-Vehicle Communication

Timely and reliably informing the derivers about an occurred danger on a roadway seems completely critical in Intelligent Transportation Systems (ITS). Real-implementationof IVG (Inter-vehicle Geocast) as a major algorithm in this field reveals some failure due to clustering phenomena of vehicletraffic. Therefore, in this paper, we propose CAGFP (Context Aware Geocast Forwarding Protocol) which forwards safety alarms for relevant section of the road. Based on IEEE 1609standard, beacon safety messages are periodically disseminated in the CCH (Control Channel). Therefore, in the proposedalgorithm we take advantage of the broadcasted beacons in order to alleviate the problem of broadcast storm. Simulationresults show low delay, less re-broadcasts and higher reception rate compared to IVG algorithm.

Keywords:

Vehicular communication , VANETs , Accident , Forwarding