Vehicular network RSU (Roadside Unit) deploy method and data forwarding method thereof

The invention relates to a vehicular network RSU (Roadside Unit) deploy method and a data forwarding method thereof. The vehicular network RSU deploy method comprises the following steps: adjacent RSUs are put in respective wireless transmission ranges and can forward data packets directly, and a plurality of RSUs are arranged along the road to form a 'backbone link' for providing connectivity for two positions with farther geographical distance; further, multiple 'backbone links' are utilized to connect all 'hotspot' areas to form a 'backbone network', and the RSUs add self identifiers and geographical positions in a beacon message to broadcast and send periodically; vehicle nodes receiving the information of the RSUs spread the information by using a probability flooding method; and when forwarding the data packets, the vehicle nodes check whether the information of the RSUs is received firstly, if not, the vehicle node with nearest distance to a destination node is selected as a next-hop relay for forwarding, and if so, whether the RSUs are utilized to assist forwarding of the data packets is determined according to the minimum distance principle. The vehicle network RSU deploy method and the data forwarding method thereof disclosed by the invention have the advantages that the connectivity of the whole network is remarkably improved, and the performance of remote data distribution is enhanced.