Research And Improvement On Plan-Based Routing Mechanism In Opportunistic Networks

Opportunistic network is a kind of ad hoc network, which does not always exist a connected path between the source node and destination node, and according to the random movement of nodes to realize the communication.These characteristics make it widely used in handheld devices networking, vehicle network, wild animal tracking, military battlefield, star network, and remote area where network is covered. Due to the frequent mobile of opportunistic networks and bad communication conditions, a node link is often disconnected. The existing routing mechanism which is based on wireless network is no longer suitable for the opportunity network, therefore, to solve the routing problem is a key technology in the network research opportunities. In recent years, researchers have proposed many opportunities to network routing mechanism, but many critical problems need to be solved, for different network scenarios design efficient routing mechanism in the current is still a challenging work.This paper first introduces the background and significance of the research, briefly introducing the characteristics of application scene in opportunistic networks and their own. The typical routing protocols for opportunistic networks and their advantages and disadvantages are also discussed. Through consulting massive literature to classify the routing mechanism of existing opportunities network. This paper focuses on the plan of routing mechanism of the opportunity network, and analysis the present research situation of plan which existed. According to irregular network node distribution by region segmentation caused by the terrain, weather, disaster and other factors,analysis application scenarios and establishing the network model. Based on the split application scenarios related routing mechanism, splitting the region by clustering, designing the program of hybrid dynamic ferry routing mechanism. The mechanism discards message in minimization condition in the meet node. The traffic aware heuristic algorithm for each cluster (FIC cluster node ferry) to calculate the optimal moving path, introducing fixed relay nodes on the FIC node and the FBC (inter cluster ferry) asynchronous cooperative communication between nodes.Through using the opportunity network simulation tool ONE (Opportunistic Networking Environment) to simulate the routing mechanism, and comparing with other representative routing plan which based on opportunistic networks. To prove that routing mechanism proposed in this paper is verified according to the network scene to improve data transmission performance of opportunistic networks.