Designing Of Routing Protocol Based On Node Mobility Model In Underwater Sensor Network

In recent years,with the accelerating pace of the development of marine resources,there is a demand for every country to carry out a long,continuous and stable monitoring to marine environment,geological changes,and marine resources and so on,and researchers pay more attention to the study of underwater information transmission technology.Therefore,the underwater wireless sensor network came into being,and has become a hot spot in the research of sensor network.Underwater Sensor Networks has many different from terrestrial wireless sensor networks,which is the most important is the diverse ways of communication.The attenuation of electromagnetic wave in the sea is huge,while the acoustic wave in the water has a better transmission,which making the voice becomes a preferable choice for underwater communication technology.The underwater voice has a slower transmission and a larger propagation loss,and it is subject to the influence of the Multipath Effect and Doppler Effect,which resulting in a narrow bandwidth and heavy delay of Underwater Sensor Network.The above characteristics of underwater channel has brought challenges to the research of Underwater Sensor Network.First of all,several kinds of common underwater node mobility model was be studied,including Static Moving Model,Shallow Water Moving Model and Lagrange Model.These models can describe the movement of the nodes in the two-dimensional scene,however,not considering the underwater network topology is three-dimensional,and therefore they cannot be a good description of movement in three-dimensional underwater scene.In order to reflect the underwater movement of anchor node,a 3D mobile model of underwater anchor node was be proposed.Based on the mobility model,a topology control algorithm based on the mobile model of anchor nodes was be proposed,the algorithm enables nodes to find reliable neighbor nodes in network topology by sending control message and combining with the moving rules of the anchor nodes.Then,a routing protocol,Vector Based Forwarding Based on Anchor Node Mobility Model(AVBF)was be presented.By selecting the next hop node from the reliable neighbor table,the protocol replaces the redundant forwarding strategy of VBF,which solves the problem of unreliable transmission and redundancy.Finally,AVBF protocol was be realized on the network simulation tool Aqua-Sim,which is developed from NS2,and compared with VBF in terms of data transmission success rate,average delay and total energy consumption.The simulation results confirm that AVBF protocol is better than VBF protocol.