Research Of Data Transmission Based On Cooperative Mechanism In Opportunistic Networks

The routing algorithm of the opportunistic networks is no longer dependent on the end-to-end connection. The message propagation depends on the cooperation of nodes to fulfill a "store – carry – process – and – forward" fashion. The opportunistic network is more in line with the actual requirements. So it has a broad application prospect in the field of wildlife tracking, intelligent transportation and so on. It improved the people’s production and living style greatly. The opportunistic network is a hot application of research hot spots in the applications. As an important part of the opportunistic network, data transmission based on cooperative mechanism has received extensive attention.In this article, we focus on the cooperative mechanism of the opportunistic network. The major work completed and contributions include several aspects as follows:Firstly, to achieve the communication of nodes in mutually disjoint cluster, we propose a routing algorithm. This algorithm base on the cooperation of the ferry node and the cluster node. The experiments based on the ONE(Opportunistic Network Environment) simulator show that it is less affected by the size of cache, and the effectiveness of the routing algorithm in terms of high delivery rate, low overhead and small average delay.Secondly, in the view of the problems that the existing routing algorithms generate too much network traffic or blindly rebroadcasts, we propose a hybrid routing algorithm. The routing algorithm base on complete cooperative. The experiments based on the ONE simulator show that the routing algorithm can improve the delivery rate.Finally, to reduce the influence of the selfish behavior, we put forward a Prophet routing algorithm. The routing algorithm base on the BIP(Bargaining based Incentive Protocol) model. The experiments based on the ONE simulator show that it can effectively reduce the impact of uncooperative behavior.