New Results on the IC_AOMDV Protocol for Vehicular Ad Hoc Networks in Urban Areas

Abstract

A Vehicular Ad Hoc Network (VANET) is formed by a group of mobile and wireless nodes (cars, buses, trucks, etc), which can dynamically form a network to exchange information without the necessity of using a fixed network infrastructure. The performance of these networks is entirely dependent on the quality of the established routes. Several factors can influence route quality and network connectivity, for instance: speed, density, movement direction, and radio transmission range. Therefore, the design of VANET routing protocols has become an intriguing challengeable research topic. The newly introduced Improved Connectivity Ad Hoc On-Demand Multipath Distance Vector (IC_AOMDV) protocol uses vehicular density and movement direction (combined with the number of hops) to establish more stable and beneficial routes. Simulation results proved that IC_AOMDV can deliver good performance on the metrics packet delivery rate, average end-to-end delay and overhead, when compared to other well-known protocols. This paper brings new results on the statistical behavior of each parameter used in the IC_AOMDV route selection process and it shows that the most beneficial routes are only 20% to 30% longer when compared to those employed in the standard AOMDV protocol.

Keywords

• computer simulation
• intelligent transportation systems
• mobile communication
• performance analysis
• routing protocols