An adaptive cross-layer multi-path routing protocol for urban VANET

For vehicle-to-vehicle (V2V) communication, suitable routing protocols are needed. An adaptive cross-layer multi-path routing protocol, R-S-AOMDV, is proposed. The routing metric combines hop-count, link-quality and vehicle-motion information. To make use of advantages of multi-path routing protocol, such as decrease of route discovery frequency, the protocol is designed based on the improvement of AOMDV (Ad hoc On-demand Multipath Distance Vector) routing protocol. Compared with AOMDV with minimum hop-count metric, simulation results show that R-S-AOMDV achieves better performance, no matter in sparse or dense urban VANET (Vehicular Ad hoc NETwork).