Reliable Data Delivery in Vehicular Ad Hoc Networks

Vehicular ad hoc networks (VANETs) are a specific type of Mobile ad hoc Networks (MANETs). Key characteristics of VANETs that distinguish from MANETs are time varying nature of vehicle density, high mobility, delay sensitive applications etc. Because of these constraints, data delivery in VANETS is a challenging task. In this paper, we propose the Reliable Data Delivery scheme for VANETs. Proposed scheme operates in the following two phases: (1) identification of forwarding zone and expected zone and (2) Establishing the connectivity between source and destination vehicle in the expected zone for the reliable data delivery. In the forwarding zone, the vehicle with high mobility is identified for carrying the data packet. If the destination vehicle is not found in the forwarding zone, the data packets are broadcasted in the expected zone until they reach the destination vehicle. In order to test the performance effectiveness, the proposed scheme is simulated to analyze the performance metrics in terms of delay, packet delivery ratio, route life time and control overhead.