Research Based On Key Technologies In Vehicular AD-HOC Network

With the rapid development of wireless technology, Vehicular Ad-hoc Network(VANET) has beginning to attract the attention of the research in the world. Due to the huge space development in assist driving, traffic monitoring and vehicle entertainment sectors, the importance of developing VANET has been aware in the major automobile manufacturers, governments and some large academic research groups.Compared with the traditional network, VANET has fast-moving nature, special network topology, and roadside facilities shielding effect and other characteristics. So general topology-based routing protocols are not suitable for use in vehicle network. This paper starting research from the routing protocol and combined with existing advantages and disadvantages in the classical routing protocols. This paper proposes a routing protocol OPUVRE. OPUVRE use road density, road length and degree of road uniform to calculated the weight (lower right represents the better performance) of every road, and then use Dijkstra Algorithm to find the optimal path.The existing routing protocols are based on the assumption that the nodes take the initiative to forwarding the data in VANET. Due to the autonomy of the vehicle VANET node, it is difficult to provide that all the nodes forwarding the data selfness.So this paper proposes IM-basedon-VCVN, incentive-based car-linked network of virtual currency. IM-basedon-VCVN detailed pricing and vehicle number of virtual money to provide forwarding services to obtain the amount of money required to pay to send their own data, and the analysis was based on the conclusion:improving vehicle relay network density can reduce the average number of VANETs vehicle forward or carry forwards time. Meanwhile, this paper analyzes how the vehicle to act according to the specific circumstances in selfishness, the study aims to set reasonable parameters makes the vehicle from the perspective of their own interests in favor of the actions taken to optimize the performance of the entire network and proposed for vehicle cached data replacement algorithm.IM-basedon-VCVN is suitable in the situation that the data are mainly generated by internal nodes themselves. With the rapid development of VANET, research on commercial model in VANET gradually are expanding abroad. One problem is that inspire the nodes in VANET help to forwarding the ads. Another problem is how to control costs and delivery range of commercial advertising. To solve these two problems. CAD-Basedon-GTT is proposed in this paper. CAD-Basedon-GTT uses game theory tree to encourage vehicles to forwarding ads to maximize their revenue. In addition, CAD-Based-GTT use MSH mode to control the advertising costs and scope. Through the analysis in the simplify advertising revenue model, it has been proof that advertisers can use the reasonable parameters control the scope and cost of advertising in order to maximize advertising revenue in MSH model.