A Hybrid Architecture of Routing Protocols for VANET with Cross-Layer Design

Design of a routing protocol of vehicle to vehicle (V2V) is a critical issue for VANET due to dynamic change of traffic road environments. Among all the proposed solutions, there is no a single solution which is applicable to all kinds of road environments. In this paper, we propose a hybrid architecture with cross-layer design to provide alternative routing protocols according to different needs. The hybrid architecture is based on multiple routing-path plane, cross-layer path selection, integration of broadcast packets, and a routing module integration layer (RMIL). Simulation results show that the proposed solution outperforms both AODV and GPSR in terms of delivery ratio and throughput in both freeway and grid-street scenarios.